CN215661685U

CN215661685U - Quick cooling structure of mould core

Info

Publication number: CN215661685U
Application number: CN202121330326.2U
Authority: CN
Inventors: 谭建志; 郭伟
Original assignee: Guangdong Liansu Technology Industrial Co Ltd
Current assignee: Guangdong Liansu Technology Industrial Co Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-28
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a mold core rapid cooling structure, which comprises a mold cavity plate with a mold cavity, wherein the mold core is arranged in the mold cavity, an aluminum gland is arranged at the top of the mold core, a deep well is arranged in the middle of the mold core, a circulation cavity between the aluminum gland and the deep well comprises an upper cavity and a lower cavity which are communicated, a copper pipe is arranged in the deep well, the top of the copper pipe is communicated with the upper cavity, the top of the deep well is communicated with the lower cavity, the bottom of the copper pipe is connected with a first water inlet pipe, the bottom of the deep well is connected with a first water outlet pipe, the side wall of the mold core is provided with a first cooling area, a second cooling area, a third cooling area and a fourth cooling area, the positions of the circulation cavity correspond to the first cooling area, the inner sides of the second cooling area, the third cooling area and the fourth cooling area respectively correspond to a two-ring water path, a three-ring water path and a four-ring water path, and each water path is connected with a water inlet and outlet pipe. This real novel cooling water route through in to the mould core improves, makes the lateral wall of core can reach balanced quick cooling effect, when making the thick wall product stereotype the cooling, and the internal diameter size can obtain stable control.

Description

Quick cooling structure of mould core

Technical Field

The utility model relates to the field of plastic pipe injection production, in particular to a mold core rapid cooling structure.

Background

At present, when PVC thick-wall products are manufactured, the size is difficult to control. Because the thicker position of product volume is when cooling, and product surface and product hole surface receive the influence of mould surface temperature to cool off the design earlier, and when the product thick wall position cooled down the shrink, product surface and hole surface contraction stress phenomenon of dragging each other appear, and make the product size unstable, and the qualification rate is on the low side in the production process, and manufacturing cost increases correspondingly. For example, patent CN204471666U discloses a cooling system for a mold core, which is only to cool the sidewall of the mold core by the same spiral water path, lacks cooling the top, and is easy to cool unevenly when cooling the thicker part of the product, and the shrinkage stress of the surface of the product and the surface of the inner hole is mutually dragged, so that the product size is unstable, and the yield in the production process is relatively low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rapid cooling structure of a mold core, which is characterized in that a cooling water channel in the mold core is improved, so that the side wall of the mold core can achieve a balanced and rapid cooling effect, the uniform cooling of a thick-wall product is realized integrally, the inner diameter size can be stably controlled when the thick wall of the product is shrunk inwards for shaping and cooling, and the product percent of pass in the production process is improved.

The technical scheme of the utility model is as follows:

a mold core rapid cooling structure comprises a mold cavity plate, wherein a mold core is arranged on the mold cavity plate, a mold core is installed in the mold cavity, an aluminum gland is fixed at the top of the mold core, a deep well is arranged in the middle of the inside of the mold core, the mold core is provided with a circulating cavity communicated with the deep well at the bottom of the aluminum gland, the circulating cavity comprises an upper cavity and a lower cavity which are communicated, a copper pipe is arranged in the deep well, the top of the copper pipe is communicated with the upper cavity, the top of the deep well is communicated with the lower cavity, the bottom of the copper pipe is connected with a first water inlet pipe, the bottom of the deep well is connected with a first water outlet pipe, the side wall of the mold core is respectively a first cooling area, a second cooling area, a third cooling area and a fourth cooling area from top to bottom near the aluminum gland, and the position of the circulating cavity corresponds to the first cooling area, the inboard in cooling two districts is equipped with two ring water routes, the water inlet in two ring water routes is connected with the second inlet tube, the delivery port in two ring water routes is connected with the second outlet pipe, the inboard in cooling three districts is equipped with three ring water routes, the water inlet in three ring water routes is connected with the third inlet tube, the delivery port in three ring water routes is connected with the third outlet pipe, the inboard in cooling four districts is equipped with four ring water routes, the water inlet in four ring water routes is connected with the fourth inlet tube, the delivery port in four ring water routes is connected with the fourth outlet pipe.

The plastic melt is injected into the mold cavity through the runner to form a thick-wall product, the plastic melt flows on the surface of the mold core in the whole injection molding process, flows from the surface of the aluminum gland at the top to the two side walls, and flows from the first cooling area of the side walls to the fourth cooling area; the temperature of the first cooling area is highest, a copper pipe is inserted into a circulation cavity which is directly communicated with the top of the deep well, cooling water is introduced into an upper cavity at the bottom of a direct-flushing aluminum gland from a first water inlet pipe at the bottom of the copper pipe, an umbrella-shaped flow is formed in the upper cavity and shunted to the inner surface of the first cooling area on the side wall, heat is continuously taken away, and then water is discharged into the deep well from a lower cavity and is discharged by a first water outlet pipe at the bottom of the deep well; the cooling second area is a high-temperature area with the thickest wall thickness, the double-ring water channel single-group control is adopted, the water channel flow is short, cooling water flows into the water inlet of the double-ring water channel from the second water inlet pipe, so that the heat of the area can be rapidly taken away by the double-ring water channel, and then the water flows out of the water outlet of the double-ring water channel to the second water outlet pipe for discharging; the cooling three areas are controlled by a single group of three-ring water channels, cooling water flows into the water inlets of the three-ring water channels from a third water inlet pipe, so that the heat of the areas can be taken away quickly by the three-ring water channels, and then the water flows out of the water outlets of the three-ring water channels to a third water outlet pipe to be discharged; the cooling four districts are less because of the thin production heat of wall thickness, and the design has adopted the single group control in four ring water routes, and the cooling water flows in the water inlet in four ring water routes from the fourth inlet tube, makes this district heat of taking away in four ring water routes, and later water flows out to the fourth outlet pipe from the delivery port in four ring water routes and discharges. This core cooling structure adopts gland formula umbrella-type reposition of redundant personnel cooling structure at mould core top, makes the top also can cool off fast, simultaneously at the core lateral wall according to the temperature height of position segmentation multiunit water route control, and every section water route control's circulation road number reduces in proper order, makes its cooling rate weaken in proper order, makes the lateral wall temperature of core can reach balanced quick cooling effect, can make the product obtain stable control at injection moulding process product internal diameter size.

Further, the aluminum gland is fixed to the top of the mold core through a sealing strip.

Furthermore, the input port of the first water inlet pipe and the output port of the first water outlet pipe are arranged on one side of the die cavity plate.

Furthermore, the input port of the second water inlet pipe and the output port of the second water outlet pipe are arranged on one side of the die cavity plate.

Further, the input port of the third water inlet pipe and the output port of the third water outlet pipe are arranged on one side of the die cavity plate.

Furthermore, an input port of the fourth water inlet pipe and an output port of the fourth water outlet pipe are arranged on one side of the die cavity plate.

Further, the top of the deep well is a trumpet-shaped opening.

Furthermore, one side with a large horn-shaped opening radius is communicated with the lower cavity, and one side with a small horn-shaped opening radius is communicated with the deep well, so that water in the circulating cavity can be discharged quickly.

Furthermore, all the water inlet pipes and the water outlet pipes are made of metal pipes.

Furthermore, the water inlet of all the water inlet pipes and the water outlet of the water outlet pipe are respectively provided with a connector which is used for being connected with an external pipeline.

The utility model has the beneficial effects that:

according to the utility model, the mold core is cooled by adopting the gland type umbrella-shaped split-flow cooling structure and the core segmented multi-group waterway structure at the top of the mold core, so that the mold core can achieve a balanced and rapid cooling effect, and the inner diameter size of a product is stably controlled when the thick wall position of the product is shrunk inwards for shaping and cooling.

Drawings

FIG. 1 is a schematic cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

in the figure: the mold comprises a mold cavity plate 1, a mold cavity 2, a mold core 3, an aluminum gland 4, a deep well 5, an upper cavity 6, a lower cavity 7, a copper pipe 8, a first water inlet pipe 9, a first water outlet pipe 10, a first cooling area 11, a second cooling area 12, a third cooling area 13, a fourth cooling area 14, a second water inlet pipe 15, a second water outlet pipe 16, a third water inlet pipe 17, a third water outlet pipe 18, a fourth water inlet pipe 19, a fourth water outlet pipe 20, a connector 21, a horn-shaped opening 22, a flow channel 23 and a thick-wall product 24.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Example 1:

as shown in figure 1, the mold core rapid cooling structure comprises a mold cavity plate 1, wherein the mold cavity plate 1 is provided with a mold cavity, a mold core 3 is installed in the mold cavity 2, an aluminum gland 4 is fixed at the top of the mold core 3, the aluminum gland 4 is fixed at the top of the mold core 3 through a sealing strip, a deep well 5 is arranged in the middle of the interior of the mold core 3, the bottom of the aluminum gland 4 of the mold core 3 is provided with a circulation cavity communicated with the deep well 5, the circulation cavity comprises an upper cavity 6 and a lower cavity 7 which are communicated, a copper pipe 8 is arranged in the deep well 5, the top of the copper pipe 8 is communicated with the upper cavity 6, the top of the deep well 5 is communicated with the lower cavity 7, the bottom of the copper pipe 8 is connected with a first water inlet pipe 9, the bottom of the deep well 5 is connected with a first water outlet pipe 10, and the side wall of the mold core 3 is respectively provided with a first cooling area 11, a second cooling area 12, a cooling area 13 and a third cooling area from top to bottom from one end close to one end of the aluminum gland 4, Cooling four districts 14, the position in circulation chamber corresponds with cooling one district 11, the inboard of cooling two districts 12 is equipped with two ring water routes, the water inlet in two ring water routes is connected with second inlet tube 15, the delivery port in two ring water routes is connected with second outlet pipe 16, the inboard of cooling three district 13 is equipped with three ring water routes, the water inlet in three ring water routes is connected with third inlet tube 17, the delivery port in three ring water routes is connected with third outlet pipe 18, the inboard of cooling four districts 14 is equipped with four ring water routes, the water inlet in four ring water routes is connected with fourth inlet tube 19, the delivery port in four ring water routes is connected with fourth outlet pipe 20.

In this embodiment, the input ports of the second water inlet pipe 15 and the third water inlet pipe 17 and the output ports of the second water outlet pipe 16 and the third water outlet pipe 18 are all disposed on the left side of the mold cavity plate 1, and the input ports of the first water inlet pipe 9 and the fourth water inlet pipe 19 and the output ports of the first water outlet pipe 10 and the fourth water outlet pipe 20 are all disposed on the right side of the mold cavity plate 1. All the water inlet pipes and the water outlet pipes are made of metal pipes, and the water inlet positions of all the water inlet pipes and the water outlet positions of the water outlet pipes are provided with connectors 21 used for being connected with external pipelines.

As shown in fig. 2, in the present embodiment, the top of the deep well 5 is a trumpet-shaped opening 22, the side with the larger radius of the trumpet-shaped opening 22 is communicated with the lower cavity 7, and the side with the smaller radius of the trumpet-shaped opening 22 is communicated with the deep well 5, so that the water in the circulation cavity can be discharged quickly.

In this embodiment, the two-ring water channel is a water channel that spirals for two turns on the inner side of the sidewall of the mold core 3, and cooling water is input from one end, heat exchanged for two turns, and then output from the other end. The three-ring waterway and the four-ring waterway are the same in principle and are different in the number of turns of the spiral.

The principle of use of the present invention is as follows (the arrows in fig. 1 are the water flow direction):

the plastic melt is injected into the mold cavity 2 through the runner 23 to form a thick-walled product 24, and the plastic melt flows on the surface of the mold core 3 in the whole injection molding process, flows from the surface of the aluminum gland 4 at the top to two side walls, and flows downwards from the first cooling area 11 of the side walls to the fourth cooling area 14; the temperature of the first cooling area 11 is highest, a copper pipe 8 is inserted into a circulating cavity which is directly communicated with the top of the deep well 5, cooling water is introduced into an upper cavity 6 at the bottom of the aluminum gland 4 from a first water inlet pipe 9 at the bottom of the copper pipe 8, umbrella-shaped flow distribution is formed in the upper cavity 6 and flows to the inner surface of the first cooling area 11 on the side wall, heat is continuously taken away, and then water is discharged into the deep well 5 from a lower cavity 7 and is discharged by a first water outlet pipe 10 at the bottom of the deep well 5; the second cooling area 12 is a high-temperature area with the thickest wall thickness, and is controlled by a single set of two-ring water channels, so that the flow of the water channels is short, cooling water flows into the water inlet of the two-ring water channels from the second water inlet pipe 15, the heat of the area can be rapidly taken away by the two-ring water channels, and then the water flows out of the water outlet of the two-ring water channels to the second water outlet pipe 16 to be discharged; the three cooling zones 13 are controlled by a single group of three-ring water channels, cooling water flows into the water inlets of the three-ring water channels from the third water inlet pipes 17, so that heat of the zones can be taken away quickly by the three-ring water channels, and then the water flows out of the water outlets of the three-ring water channels to the third water outlet pipes 18 to be discharged; the cooling four-zone 14 has small heat because of thin wall thickness, and the design adopts the single group control of four ring water channels, and cooling water flows into the water inlet of the four ring water channel from the fourth water inlet pipe 19, so that the heat of the zone is taken away by the four ring water channel, and then the water flows out of the water outlet of the four ring water channel to the fourth water outlet pipe 20 for discharging.

According to the utility model, the press cover type umbrella-shaped shunting cooling structure is adopted at the top of the mold core of the mold, so that the top can be rapidly cooled, meanwhile, the side wall of the mold core is subjected to segmented multi-group water channel control according to the temperature of the position, the number of circulation channels of each section of water channel control is sequentially reduced, the heat reduction speed is sequentially weakened, the side wall of the mold core can achieve a balanced and rapid cooling effect, and the inner diameter size of a product can be stably controlled in the injection molding process.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a quick cooling structure of mould core, its characterized in that includes mould die cavity board, mould die cavity board is equipped with the die cavity, install the mould core in the die cavity, the top of mould core is fixed with the aluminium gland, be equipped with the deep well in the middle of the inside of mould core, the mould core is equipped with in the bottom of aluminium gland with the communicating circulation chamber of deep well, the circulation chamber includes communicating epicoele and cavity of resorption, be equipped with the copper pipe in the deep well, the top of copper pipe with the epicoele communicates with each other, the top of deep well with the cavity of resorption communicates with each other, the bottom of copper pipe is connected with first inlet tube, the bottom of deep well is connected with first outlet pipe, the lateral wall of mould core is for cooling first district, cooling second district, cooling three district, cooling four districts respectively from top to bottom being close to the one end of aluminium gland, the position in circulation chamber with cool off first district and correspond, the inboard in cooling two districts is equipped with two ring water routes, the water inlet in two ring water routes is connected with the second inlet tube, the delivery port in two ring water routes is connected with the second outlet pipe, the inboard in cooling three districts is equipped with three ring water routes, the water inlet in three ring water routes is connected with the third inlet tube, the delivery port in three ring water routes is connected with the third outlet pipe, the inboard in cooling four districts is equipped with four ring water routes, the water inlet in four ring water routes is connected with the fourth inlet tube, the delivery port in four ring water routes is connected with the fourth outlet pipe.

2. The mold core rapid cooling structure according to claim 1, wherein the aluminum gland is fixed to the top of the mold core by a sealing strip.

3. The mold core rapid-cooling structure of claim 1, wherein the input port of the first water inlet pipe and the output port of the first water outlet pipe are disposed at one side of the mold cavity plate.

4. The mold core rapid-cooling structure of claim 1, wherein the input port of the second water inlet pipe and the output port of the second water outlet pipe are disposed at one side of the mold cavity plate.

5. The mold core rapid-cooling structure of claim 1, wherein the input port of the third water inlet pipe and the output port of the third water outlet pipe are disposed at one side of the mold cavity plate.

6. The mold core rapid-cooling structure of claim 1, wherein the input port of the fourth water inlet pipe and the output port of the fourth water outlet pipe are disposed at one side of the mold cavity plate.

7. The mold core rapid cooling structure of claim 1, wherein the top of said deep well is flared.

8. The mold core rapid cooling structure according to claim 7, wherein a side of the flared opening having a larger radius is communicated with the lower cavity, and a side of the flared opening having a smaller radius is communicated with the deep well.

9. The mold core rapid-cooling structure of claim 1, wherein all of the water inlet pipes and the water outlet pipes are made of metal pipes.

10. The mold core rapid cooling structure of claim 1, wherein the water inlet of all the water inlet pipes and the water outlet of the water outlet pipe are provided with connectors for connecting with external pipes.