CN113829592A

CN113829592A - Mold core cooling device

Info

Publication number: CN113829592A
Application number: CN202111070622.8A
Authority: CN
Inventors: 黄炽南; 黄北海; 蔡世勇; 黎泽清
Original assignee: Wellwin Precision Mould Co ltd
Current assignee: Wellwin Precision Mould Co ltd
Priority date: 2020-12-22
Filing date: 2021-09-13
Publication date: 2021-12-24

Abstract

The invention discloses a mold core cooling device, which is characterized in that: the cooling device comprises a base and a mold core, wherein a cooling channel is arranged in the mold core, a mounting seat is arranged at one end of the mold core, a liquid inlet channel and a liquid outlet channel are arranged in the mounting seat, a first passage and a second passage are arranged in the base, a first connector is communicated with the liquid inlet channel, and a second connector is communicated with the liquid outlet channel; all be equipped with the check valve in inlet channel and the liquid outlet channel, be equipped with the baffle on the mount pad, the baffle stretches into in the cooling channel, inlet channel and liquid outlet channel are located respectively the both sides of baffle, the baffle is the spiral. According to the invention, the liquid inlet channel and the liquid outlet channel are arranged at the same end by optimizing the cooling device of the mold core, so that the cooling device is simpler in structure and more convenient to disassemble, and the one-way valve is arranged on the cooling loop, so that water leakage can not occur during disassembly and replacement.

Description

Mold core cooling device

Technical Field

The invention relates to the field of molds, in particular to a cooling device for a mold core.

Background

When the injection mold works, the surfaces of the cavity and the core are directly contacted with high-temperature molten liquid, so the temperature of the surface of the mold can rise, on one hand, the surface of a formed part is contacted with air at room temperature when the mold is opened every time, so that the heat exchange stress can be caused to influence the service life of the mold, on the other hand, the surface quality of an injection molding part can be influenced, and therefore, a cooling device is designed for the injection mold. At present, most injection molds are cooled by cooling water, a cooling pipeline loop is arranged in a mold core of the mold, and the cooling water flows through a pipeline to realize the cooling effect on the mold core. But in the structure that the present mould core carries out the cooling, the structure sets up unreasonablely, because the mould core all need be torn down when moulding plastics at every turn, and too complicated cooling structure makes the mould core very inconvenient in the dismouting, and production efficiency is low. And because the cooling pipeline is arranged in the mold core, water is easy to overflow when the mold core is disassembled, and the influence on the production environment is caused.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: it is an object of the present invention to provide a core cooling device that solves one or more of the problems of the prior art, and provides at least one advantageous alternative or creation.

The solution of the invention for solving the technical problem is as follows: a mold core cooling device is characterized in that: the cooling device comprises a base and a mold core, wherein a cooling channel is arranged in the mold core, a mounting seat is arranged at one end of the mold core, the mounting seat is hermetically connected with the mold core, a liquid inlet channel and a liquid outlet channel are arranged in the mounting seat, and the liquid inlet channel and the liquid outlet channel are both communicated with the cooling channel; the mounting seat is detachably connected with the base, a first passage and a second passage are arranged in the base, a first connecting head is arranged at the tail end of the first passage, a second connecting head is arranged at the tail end of the second passage, the first connecting head is communicated with the liquid inlet channel, and the second connecting head is communicated with the liquid outlet channel; one-way valves are arranged in the liquid inlet channel and the liquid outlet channel and comprise valve seats, valve cores and springs, one ends of the springs are abutted to the valve seats, the other ends of the springs are abutted to the valve cores, and the valve cores are in sliding connection with the valve seats; be equipped with the baffle on the mount pad, the baffle stretches into in the cooling channel, inlet channel is located respectively with liquid outlet channel the both sides of baffle, the baffle is the spiral.

The invention has the beneficial effects that: according to the invention, the liquid inlet channel and the liquid outlet channel are arranged at the same end by optimizing the cooling device of the mold core, so that the cooling device is simpler in structure and more convenient to disassemble, and the one-way valve is arranged on the cooling loop, so that water leakage can not occur during disassembly and replacement.

As a further improvement of the above technical scheme, check valves are arranged in the liquid inlet channel and the liquid outlet channel, each check valve comprises a valve seat, a valve core and a spring, one end of each spring is abutted against the valve seat, the other end of each spring is abutted against the valve core, and the valve cores are connected with the valve seats in a sliding mode. Through set up the check valve in inlet channel and liquid outlet channel for when dismantling the back with the mold core from the base, the check valve can be with the coolant seal in the cooling channel in the mold core, prevents that the mold core when dismantling, and the coolant liquid in the mold core from leaking out.

As a further improvement of the above technical solution, one end of the liquid inlet channel is provided with a taper opening, the valve element comprises an end head, the end head corresponds to the taper opening, the end of the end head is provided with a top pillar, and the outer diameter of the top pillar is smaller than the minimum inner diameter of the taper opening. When the mold core is arranged on the base, the top column is jacked open, so that the valve core of the one-way valve and the liquid inlet channel or the liquid outlet channel are opened, and cooling liquid can smoothly enter and exit the cooling channel; when the mold core is detached, the top column loses thrust, and the valve core is reset under the action of the spring, so that the valve core closes the liquid inlet channel or the liquid outlet channel, and the cooling liquid in the mold core is sealed in the cooling channel. And the top column is higher than the end surface of the mounting seat after penetrating through the liquid inlet channel or the liquid outlet channel.

As a further improvement of the technical scheme, a sealing structure is arranged on the periphery of the end head. By adding the sealing structure at the end head, the sealing reliability of the one-way valve can be improved.

As a further improvement of the above technical solution, the first connection head and the second connection head are both provided with the check valve, and the prop of the check valve of the first connection head faces the prop of the check valve in the liquid inlet channel or the liquid outlet channel. The check valves are arranged on the first connecting head and the second connecting head, so that the cooling liquid cannot be discharged from the base after the mold core is pulled out. Further make cooling device's use more convenient, further reduce the hourglass of coolant liquid.

As a further improvement of the technical scheme, a groove is formed in the base, the mounting seat is inserted into the groove, and a sealing ring is further arranged on the inner wall of the groove. When the die is used, the die core provided with the mounting seat is directly inserted into the groove of the base, so that the mounting is convenient, and the sealing is reliable.

As a further improvement of the technical scheme, the one-way valve is fixed in the mounting seat through a clamp spring. The clamp spring is used for installing the one-way valve, so that the one-way valve is more convenient to assemble and disassemble. When the valve core of the one-way valve is abraded, the valve core can be conveniently replaced.

As a further improvement of the technical scheme, a partition plate is arranged on the mounting seat and extends into the cooling channel, and the liquid inlet channel and the liquid outlet channel are respectively positioned on two sides of the partition plate. The cooling channel is forcibly separated by the partition plate, so that the cooling liquid flows more stably in the cooling channel, and the cooling effect is better.

As a further improvement of the above technical scheme, the mounting seat is further provided with an insert, the partition plate is fixed on the insert, the mounting seat comprises a clamping groove and a sealing ring groove, the insert is clamped in the clamping groove, and a second sealing ring is arranged in the sealing ring groove; the tail end of the partition board props against the bottom of the cooling channel, and a notch is formed in the tail end of the partition board. The installation of the partition board is more convenient and firm by utilizing the mosaic blocks. And the second sealing ring on the mounting seat can prevent water in the cooling channel from leaking.

As a further improvement of the technical scheme, the base comprises a base plate and a bottom plate, the base plate is detachably connected with the bottom plate, the first connector and the second connector are arranged on the bottom plate, and two communicating pipes are arranged in the base plate. The base is arranged to be the mounting structure of the base plate and the bottom plate, so that the base can be processed more simply and maintained more conveniently.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can derive other designs and figures from them without inventive effort.

FIG. 1 is a schematic view showing the overall structure of the core cooling device of the present invention;

FIG. 2 is an exploded view of the core cooling arrangement of the present invention;

FIG. 3 is a schematic perspective view of the check valve of the present invention;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is a schematic view of a portion of the present invention;

fig. 6 is a schematic perspective view of the separator of the present invention.

Detailed Description

The concept, specific structure, and technical effects of the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings to fully understand the objects, features, and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. The preferred embodiment of the present invention is illustrated in the accompanying drawings, which are intended to supplement the description of the text part of the specification with figures so that one can intuitively and visually understand each and every technical feature and whole technical solution of the present invention, but it should not be construed as limiting the scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the directions of up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and the meaning of larger, smaller, etc. are understood as including the present number. If there is a description of first and second for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise expressly limited, the terms set, mounted, connected, etc. should be construed broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in light of the detailed contents of the technical solutions. Meanwhile, all technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 to 5, a mold core cooling device includes a base 100 and a mold core 200, wherein a cooling channel 210 is provided in the mold core 200, the cooling channel 210 includes an opening, an opening end of the mold core 200 is provided with a mounting seat 300, the mounting seat 300 is fixedly connected with the mold core 200 through a screw or a bolt, the mounting seat 300 is hermetically connected with the mold core 210, and an end surface of the mounting seat 300 blocks the opening; meanwhile, a liquid inlet channel 310 and a liquid outlet channel 320 are arranged in the mounting base 300, and both the liquid inlet channel 310 and the liquid outlet channel 320 are communicated with the cooling channel 210, so that the cooling channel 210 can be communicated with the outside through the liquid inlet channel 310 and the liquid outlet channel 320; the mounting base 300 is detachably connected to the base 100, specifically, a groove 130 is formed in the base 100, the mounting base 300 is inserted into the groove 130, and a sealing ring 140 is further arranged on the inner wall of the groove 130. The base 100 is provided with a first passage 101 and a second passage 102, the end of the first passage 101 is provided with a first connector 110, the end of the second passage 102 is provided with a second connector 120, the first connector 110 is communicated with the liquid inlet channel 310, and the second connector 120 is communicated with the liquid outlet channel 320. Specifically, the base 100 includes a base plate 150 and a bottom plate 160, the base plate 150 and the bottom plate 160 are detachably connected, the bottom plate 160 is installed above the base plate 150, the first connector 110 and the second connector 120 are disposed on the bottom plate 160, and two communicating pipes 170 are disposed in the base plate 150.

Meanwhile, check valves 400 are arranged in the liquid inlet channel 310 and the liquid outlet channel 320, each check valve 400 comprises a valve seat 410, a valve core 420 and a spring 430, one end of each spring 430 is abutted against the valve seat 410, the other end of each spring is abutted against the valve core 420, and the valve cores 420 are in sliding connection with the valve seats 410. Specifically, one end of the liquid inlet channel 310 is provided with a tapered opening 311, the valve core 420 includes a tip 421, the tip 421 corresponds to the tapered opening 311, the end of the tip 421 is provided with a top pillar 422, and the outer diameter of the top pillar 422 is smaller than the minimum inner diameter of the tapered opening 311.

Further, the check valve 400 is disposed on each of the first connector 110 and the second connector 120, and the top column 422 of the check valve 400 of the first connector 110 faces the top column 422 of the check valve 400 in the liquid inlet passage 310 or the liquid outlet passage 320.

Moreover, a partition plate 500 is arranged on the mounting seat 300, the partition plate 500 extends into the cooling channel 210, and the liquid inlet channel 310 and the liquid outlet channel 320 are respectively located on two sides of the partition plate 500. Specifically, the mounting base 300 is further provided with an insert 600, the partition plate 500 is fixed on the insert 600, the mounting base 300 comprises a clamping groove 330 and a sealing ring groove 340, the insert 600 is clamped in the clamping groove 330, and a second sealing ring 350 is arranged in the sealing ring groove 340; the end of the partition plate 500 is abutted against the bottom of the cooling channel 210, and the end of the partition plate 500 is further provided with a notch 510. Meanwhile, referring to fig. 6, the separator 500 has a spiral shape.

In this embodiment, the base 100 is mainly assembled by a bottom plate 160 and a base plate 150, wherein the bottom plate 160 is provided with a first connector 110, a second connector 120 and a groove 130. A sealing ring 140 is also disposed in the groove 130. The depth of the recess 130 is not less than the height of the mount 300. The first connector 110 and the second connector 120 are located below the groove 130. Two communicating pipes 170 are arranged in front of the base plate 150, a transverse through groove and a vertical through groove which are communicated with each other are further arranged in the base plate 150, the front end of the transverse through groove is communicated with the communicating pipes 170, the rear end of the transverse through groove is communicated with the lower end of the vertical through groove, and the upper end of the vertical through groove is communicated with the first connector 110 or the second connector 120. The first and

second passages

101 and 102 are formed by the horizontal and vertical through slots in the base plate 150 and the first and

second connectors

110 and 120 in the bottom plate 160.

When assembling, the two check valves 400 are respectively installed in the first connector 110 and the second connector 120, then the bottom plate 160 is clamped on the base plate 150, and then the

bottom plates

160 and 150 are fixed by bolts. After the fixation, the check valve 400 is fixed in the connection head. Further, the valve seat 410 of the check valve 400 abuts on the plate surface of the substrate 150. And the spring 430 of the valve core 420 is extended upward. In a natural state, the top pillar 422 of the valve core 420 is higher than the connector and higher than the lower surface of the groove 130, and the valve core 420 seals the outlet of the connector under the action of the spring 430. Thereby closing the first passage 101 relative to the second passage 102.

Meanwhile, the mold core 200 of the present embodiment is provided with a cooling channel 210 in the middle thereof, and the cooling channel 210 is opened at a single end. That is, only the lower end surface of the mold core 200 is opened. A mount 300 is mounted on the lower end surface of the die core 200. The mounting base 300 is provided with a liquid inlet channel 310, a liquid outlet channel 320, a clamping groove 330 and a sealing ring groove 340, wherein the lower parts of the liquid inlet channel 310 and the liquid outlet channel 320 are provided with tapered openings 311.

When the check valve is assembled, the two check valves 400 are sleeved in the inlet channel 310 and the outlet channel 320, and then the check valve 400 is fixed in the inlet channel 310 or the outlet channel 320 by the clamp spring 440. After the check valve is installed, the valve core 420 of the check valve 400 is under the action of the spring 430, so that the valve core 420 is extended downward. So that the top pillar 422 protrudes from the end surface of the mounting seat 300, and the liquid inlet passage 310 or the liquid outlet passage 320 is closed by the sealing structure 423 on the outer periphery of the head 421. Next, the spacer 500 is inserted into the insert 600, the insert 600 is clamped on the clamping groove 330, the second sealing ring 350 is placed in the sealing ring groove 340, and finally the mounting base 300 is fixed on the lower end surface of the mold core 200 through bolts. When installed in place, the top of the baffle 500 abuts just against the bottom of the cooling channel 210, and since the end of the baffle 500 is also provided with a notch 510, the width of the baffle 500 is approximately equal to the inner diameter of the cooling channel 210. So that the originally single cooling channel 210 forms two flow channels after being inserted into the partition 500. And the two circulation pipelines are respectively communicated with the liquid inlet channel 310 and the liquid outlet channel 320. Moreover, the partition 500 is spiral, so that a spiral water flow is formed in the cooling channel 210, and turbulence can be generated during cooling, so that the heat dissipation effect is better.

In operation, the mold core 200 with the mounting seat 300 is inserted into the base 100 from top to bottom such that the two check valves 400 on the mounting seat 300 are aligned with the two mounting valves 400 on the base 100, respectively. Of course, in order to improve the efficiency and accuracy of installation, the fool-proof effect can be achieved by optimizing the shape of the installation seat 300 and the shape of the groove 130. For example, the periphery of the mounting base 300 is provided with a positioning surface, and the recess 130 is provided with a limiting surface matching with the positioning surface. So that only a specific position can mount the mount 300 into the recess 130.

When the mounting base 300 and the base 100 are mounted in place, the top posts 422 of the upper and lower sets of check valves 400 abut against each other, so that the upper and lower sets of check valves 400 are opened. Due to the good sealing between the mounting base 300 and the base 100, the cooling liquid (e.g. water) enters the first passage 101 from one of the communicating pipes 170, then enters the liquid inlet channel 310, then enters the cooling channel 210, then flows in the cooling channel 210 continuously after bypassing the notch 510 of the partition 500 because of the partition 500 provided in the cooling channel 210, and flows out from the liquid outlet channel 320, flows back to the second passage 102, and finally is discharged from the other communicating pipe 170.

When the production is finished and the mold core 200 needs to be taken away, the mold core 200 is directly lifted upwards, and the cooling liquid hardly leaks out. When the mold core 200 is lifted up, the valve core 420 of the check valve 400 is restored by the spring 430 because the check valve 400 loses the abutment of the external force. A check valve 400 located in the mount 300 closes the cooling fluid in the cooling passage 210. And the check valve 400 in the base 100 prevents the external coolant from being discharged. Greatly facilitating the production of products. The whole cooling device is convenient to use, has good sealing performance and can effectively cool the die core.

In a further preferred embodiment, a sealing structure 423 is provided on the outer periphery of the tip 421. The sealing structure 423 may be a sealing ring or a protrusion integrally formed with the head 421. The projection or seal ring may increase the contact area of tip 421 with tapered opening 311, thereby increasing the reliability of the seal.

Further as a preferred embodiment, the check valve 400 is fixed in the mounting seat 300 by a snap spring 440. The check valve 400 is conveniently disassembled and assembled by using the snap spring 440.

In some embodiments, the base 100 may not be provided with the one-way valve described. When the mold core needs to be removed, the on-off valve of the communication pipe 170 is closed, so that the coolant is prevented from being continuously discharged from the base 100.

And in some embodiments, the base plate 160 and the substrate 150 may be integrally formed.

In some embodiments, septum 500 may not be provided. The cooling channels 210 of the mold core 200 can be machined, so that the cooling channels with different shapes and trends are formed in the mold core 200, and the cooling effect on the mold core is achieved.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention and its scope is defined by the claims appended hereto.

Claims

1. A mold core cooling device is characterized in that: the cooling device comprises a base and a mold core, wherein a cooling channel is arranged in the mold core, a mounting seat is arranged at one end of the mold core, the mounting seat is hermetically connected with the mold core, a liquid inlet channel and a liquid outlet channel are arranged in the mounting seat, and the liquid inlet channel and the liquid outlet channel are both communicated with the cooling channel; the mounting seat is detachably connected with the base, a first passage and a second passage are arranged in the base, a first connector is arranged at the tail end of the first passage, a second connector is arranged at the tail end of the second passage, the first connector is communicated with the liquid inlet channel, and the second connector is communicated with the liquid outlet channel; one-way valves are arranged in the liquid inlet channel and the liquid outlet channel and comprise valve seats, valve cores and springs, one ends of the springs are abutted to the valve seats, the other ends of the springs are abutted to the valve cores, and the valve cores are in sliding connection with the valve seats; be equipped with the baffle on the mount pad, the baffle stretches into in the cooling channel, inlet channel is located respectively with liquid outlet channel the both sides of baffle, the baffle is the spiral.

2. The core cooling device of claim 1, characterized by: one end of the liquid inlet channel is provided with a conical opening, the valve core comprises an end head, the end head corresponds to the conical opening, the tail end of the end head is provided with a top column, and the outer diameter of the top column is smaller than the minimum inner diameter of the conical opening.

3. The core cooling device of claim 2, wherein: and a sealing structure is arranged on the periphery of the end head.

4. The core cooling device of claim 2, wherein: the first connecting head and the second connecting head are both provided with the one-way valves, and the top columns of the one-way valves of the first connecting head face to the top columns of the one-way valves in the liquid inlet channel or the liquid outlet channel.

5. The core cooling device of claim 4, wherein: the base is provided with a groove, the mounting seat is inserted into the groove, and the inner wall of the groove is further provided with a sealing ring.

6. The core cooling device of claim 5, wherein: a fool-proof structure is further arranged in the groove.

7. The core cooling device of claim 1, wherein: the check valve is fixed in the mounting seat through a clamp spring.

8. The core cooling device of claim 1, wherein: the mounting seat is further provided with an embedded block, the partition plate is fixed on the embedded block, the mounting seat comprises a clamping groove and a sealing ring groove, the embedded block is clamped in the clamping groove, and a second sealing ring is arranged in the sealing ring groove; the tail end of the partition board props against the bottom of the cooling channel, and a notch is formed in the tail end of the partition board.

9. The core cooling device of claim 1, wherein: the base comprises a base plate and a bottom plate, the base plate is detachably connected with the bottom plate, the first connector and the second connector are arranged on the bottom plate, and two communicating pipes are arranged in the base plate.