CN216068459U

CN216068459U - Die set

Info

Publication number: CN216068459U
Application number: CN202122485901.2U
Authority: CN
Inventors: 岑元
Original assignee: Wuxi Shunlianfeng Technology Co ltd
Current assignee: Wuxi Shunlianfeng Technology Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-03-18
Anticipated expiration: 2031-10-15

Abstract

The utility model relates to the field of molds, in particular to a mold. The mold comprises a male mold component, a female mold component, a first nozzle, a first heating component, a runner plate and a second heating component, wherein a main runner is arranged in the first nozzle, and a sub-runner is arranged in the runner plate. Firstly, introducing hot melt adhesive into a main flow channel, dividing the main flow channel into two sub-flow channels through a first nozzle, and then injecting the hot melt adhesive into a cavity through two second nozzles, so that the flowing path of the hot melt adhesive in the flow channel is shortened, and the problem that the hot melt adhesive is cooled in advance when reaching the tail end of the cavity is solved; in addition, set up first heating element, wear to establish second heating element in the subchannel in sprue one side to can reduce the cooling rate of hot melt adhesive in the runner, and then guarantee that the hot melt adhesive of die cavity cools off with more even speed, thereby guarantee off-the-shelf mechanical properties and appearance quality.

Description

Die set

Technical Field

The utility model relates to the field of molds, in particular to a mold.

Background

The storage boxes on the market are generally processed by an injection molding method, and the specific steps are that a completely molten plastic material is stirred by a screw at a certain temperature, injected into a mold cavity by high pressure, cooled and solidified to obtain a molded product. In the prior art, a method of extruding glue solution through a single channel is generally adopted to form a storage box, for the storage box with a larger length, the route through which the glue solution at the tail end of the channel flows is far, the flowing time is longer, and the glue solution can be cooled earlier, so that the storage box shrinks unevenly when being cooled and formed, is not formed according to the designed shape, has a surface distorted, and has the problem of warping deformation; or the outer layer plastic of the storage box is firstly cooled, solidified and shrunk, the inner layer of the storage box can be hot melt, so that the core layer can limit the shrinkage of the surface layer, the core layer is in a pressure stress state, the surface layer is in a tensile stress state, and the problem of internal stress cracking is caused. The mechanical property and the appearance quality of the storage box are affected by the problems of warping deformation, internal stress cracking and the like caused by uneven cooling.

Accordingly, there is a need for a mold that overcomes the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

One object of the present invention is to provide a mold, which can prevent the premature cooling of the glue solution, improve the uniformity of the temperature of the glue solution when entering the cavity, and reduce the occurrence of problems such as warping and internal stress.

To achieve the purpose, the utility model adopts the following scheme:

a mold comprising a male mold component and a female mold component, the male mold component and the female mold component enclosing a cavity, the male mold component being movable relative to the female mold component in a first direction, the mold further comprising:

a first nozzle having a main flow passage therein;

the first heating assembly is arranged in the first nozzle and is positioned on one side of the main flow channel;

the runner plate is internally provided with at least two sub-runners, one end of each sub-runner is communicated with the main runner, and the other end of each sub-runner is communicated with different positions of the cavity;

and the second heating assembly is arranged in the runner plate and penetrates through at least two sub-runners.

As an alternative, the die assembly further comprises at least two second nozzles, the second nozzles are connected with the female die assembly, and each second nozzle is correspondingly communicated with one of the branch channels and the cavity.

As an alternative, the method further comprises the following steps:

the inclined guide post is connected with the female die assembly and is arranged obliquely relative to the first direction;

the sliding block is in sliding fit with the male die assembly along a second direction and sleeved on the inclined guide post, and the second direction is perpendicular to the first direction;

the male die assembly comprises a first insert, the first insert is used for enclosing a part of the die cavity, and the first insert is connected with the sliding block.

As an alternative, the male die assembly is further provided with an avoiding hole, and the avoiding hole is configured to avoid the inclined guide post when the male die assembly and the concave film assembly are assembled.

Alternatively, the mould cavity comprises a threaded portion, and the male mould assembly further comprises a second insert, the first insert being snappable with the second insert to enclose the threaded portion.

As an alternative, the device further comprises a marble and a supporting rod, wherein one end of the supporting rod is connected to the male die assembly, and the marble is connected to the other end of the supporting rod, so that the marble abuts against a surface of the sliding block for sliding fit with the male die assembly.

As an alternative, the first heating assembly comprises a first strip-shaped resistance wire.

As an alternative, the second heating assembly comprises a second strip-shaped resistance wire.

Alternatively, an ejector plate is connected with the male die assembly and can be in sliding fit with the male die assembly along the first direction;

and one end of the ejection piece is connected with the ejection plate, the other end of the ejection piece extends to the end part of the cavity, and the ejection piece is configured to eject the formed workpiece from the male die assembly after the male die assembly and the female die assembly are separated.

As an alternative, the ejection mechanism further comprises an elastic member, the elastic member is elastically abutted between the male die assembly and the ejection plate, and the elastic member is configured to reset the ejection plate after the ejection member ejects the workpiece.

The utility model has the beneficial effects that:

in the die provided by the utility model, the hot melt adhesive is firstly introduced into the main flow channel, the main flow channel is used for distributing the hot melt adhesive to the two sub-flow channels through the first nozzle, and then the hot melt adhesive is injected into the die cavity through the two second nozzles, so that the path of the hot melt adhesive flowing in the flow channel is shortened, and the problem that the hot melt adhesive is cooled in advance when reaching the tail end of the die cavity is solved; in addition, set up first heating element, wear to establish second heating element in the subchannel in sprue one side to can reduce the cooling rate of hot melt adhesive in the runner, and then guarantee that the hot melt adhesive of die cavity cools off with more even speed, thereby guarantee off-the-shelf mechanical properties and appearance quality.

Drawings

Fig. 1 is a sectional view of a mold provided in an embodiment of the present invention.

In the figure:

1. a first nozzle; 101. a main flow channel; 2. a first heating assembly; 3. a runner plate; 301. a shunt channel; 4. a second heating assembly; 5. a second nozzle; 6. a male die assembly; 601. a first insert; 602. a second insert; 603. a first plate; 604. a second plate; 605. a third plate; 606. a core; 7. an inclined guide post; 8. a slider; 9. avoiding holes; 10. a marble; 11. a support rod; 12. ejecting the plate; 13. ejecting the part; 14. an elastic member; 15. a cavity; 16. a female die assembly; 1601. a fourth plate; 1602. a fifth plate; 1603. and a sixth plate.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the present invention, the terms of orientation such as "upper", "lower", "left", "right", "inner" and "outer" are used in the case where no description is made on the contrary, and these terms of orientation are used for easy understanding, and thus do not limit the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the production of the product by injection molding processing, for a product with a large length, the path through which the glue solution at the tail end of the product flows is far, the flowing time is long, and the glue solution can be cooled earlier, so that the product shrinks unevenly during cooling molding, cannot be molded according to the designed shape, and has the problems of surface distortion and warping deformation; or the outer layer plastic of the product is firstly cooled, solidified and shrunk, the inner layer of the product can be hot melt, so that the core layer can limit the shrinkage of the surface layer, the core layer is in a compressive stress state, the surface layer is in a tensile stress state, and the problem of internal stress cracking occurs.

As shown in fig. 1, the mold in this embodiment comprises a male mold member 6 and a female mold member 16, the male mold member 6 and the female mold member 16 enclosing a cavity 15, the male mold member 6 being movable in a first direction relative to the female mold member 16. The male die assembly 6 comprises a first plate 603, a second plate 604, a third plate 605 and a core 606. The female die assembly 16 includes a fourth plate 1601, a fifth plate 1602, and a sixth plate 1603. Preferably, the core 606 in this embodiment is in a strip shape, and by providing the strip-shaped core as a part of the male mold assembly 6, the strip-shaped core can be matched with the female mold assembly 16 to form a part of the tubular cavity 15, so that a tubular product can be molded to meet the requirement of molding the tubular product.

In order to avoid premature cooling of the glue solution, improve the uniformity of the temperature of the glue solution when the glue solution enters the cavity 15, and reduce the occurrence of problems such as warping deformation and internal stress of an injection molding product, the mold of the embodiment further comprises a first nozzle 1, a first heating assembly 2, a runner plate 3 and a second heating assembly 4, wherein a main runner 101 is arranged in the first nozzle 1, and the first heating assembly 2 is arranged in the first nozzle 1 and positioned on one side of the main runner 101; at least two sub-runners 301 are arranged in the runner plate 3, one end of each sub-runner 301 is communicated with the main runner 101, and the other end of each sub-runner 301 is communicated with different positions of the cavity 15; the second heating assembly 4 is disposed in the flow channel plate 3 and penetrates the sub-flow channel 301. Firstly, introducing hot melt adhesive into a main flow channel 101, shunting the hot melt adhesive from the main flow channel 101 to two sub-flow channels 301 through a first nozzle 1, and then injecting the hot melt adhesive into a cavity 15 to shorten the path of the hot melt adhesive flowing in the flow channel, thereby reducing the problem that the hot melt adhesive is cooled in advance when reaching the tail end of the cavity; in addition, set up first heating element 2 around subchannel 301 all around, under the heating heat preservation effect of first heating element 2, the cooling rate of hot melt adhesive in the runner further slows down, and the hot melt adhesive cooling in die cavity 15 is even to guarantee the mechanical properties and the appearance quality of product. It should be noted that the direction of the X axis in fig. 1 is the first direction indicated herein.

Specifically, the first heating assembly 2 in this embodiment includes the first strip-shaped resistance wire, and through setting up the first strip-shaped resistance wire as first heating assembly 2 and set up by main flow channel 101, the circular telegram makes the first strip-shaped resistance wire send out heat and can make heat transfer to main flow channel 101 to keep warm to the hot melt adhesive in main flow channel 101. The first strip-shaped resistance wire has the advantages of high temperature resistance, fast temperature rise, long service life and the like, can ensure that the fast heating provides a heat preservation effect for hot melt adhesive in the main runner 101, and can prolong the service life of the mold. Preferably, the axis of the first strip-shaped resistance wire in this embodiment is parallel to the axis of the main flow channel 101, and it is ensured that the first strip-shaped resistance wire can uniformly provide a heat preservation effect for the hot melt adhesive in the main flow channel 101, thereby improving the heat preservation effect.

Second heating element 4 in this embodiment includes second bar resistance wire, through setting up second heating element 4 in runner plate 3 and wear to establish subchannel 301, the circular telegram makes second bar resistance wire send heat and transmits to the hot melt adhesive in subchannel 301, guarantees that the temperature of hot melt adhesive does not descend to avoid the hot melt adhesive to cool off at the excessive speed. The second strip-shaped resistance wire has the advantages of high temperature resistance, fast temperature rise, long service life and the like, can ensure that the fast heating provides a heat preservation effect for hot melt adhesive in the runner 301, and can prolong the service life of the die. Preferably, the second heating assembly 4 in this embodiment further includes a high temperature resistant sleeve, and the high temperature resistant sleeve is sleeved outside the second bar-shaped resistance wire, so as to avoid direct contact between the hot melt adhesive and the second bar-shaped resistance wire, and thus avoid damage or loss of the hot melt adhesive.

In order to make the hot melt adhesive in the sub-runners 301 smoothly flow into the mold cavity 15, the mold in this embodiment further includes at least two second nozzles 5, the second nozzles 5 are connected to the female mold assembly 16, and each second nozzle 5 correspondingly communicates with one sub-runner 301 and the mold cavity 15. The hot melt adhesive in the sub-channel 301 flows into the die cavity 15 through the second nozzle 5, so that the hot melt adhesive can accurately flow into the die cavity 15, and the hot melt adhesive is prevented from leaking or being wasted. Preferably, the end of the second nozzle 5 connected with the cavity 15 is a narrow through hole, so as to further ensure that the hot melt adhesive can accurately flow into the cavity 15.

The die in the embodiment further comprises an inclined guide post 7 and a sliding block 8, the inclined guide post 7 is connected with the female die assembly 16 and is arranged obliquely relative to the first direction, the sliding block 8 is in sliding fit with the male die assembly 6 along the second direction, and the inclined guide post 7 is sleeved with the sliding block 8. The male mould assembly 6 comprises a first insert 601. the first insert 601 is intended to enclose part of the mould cavity 15. the first insert 601 is connected to the slide 8. It should be noted that the Y axis in fig. 1 is in a second direction as referred to herein, and the first direction is perpendicular to the second direction. When the male die assembly 6 is far away from the female die assembly 16 along the first direction for die opening, the sliding block 8 moves away from the female die assembly 16 along with the male die assembly 6, due to the limiting effect of the inclined guide post 7, the sliding block 8 generates a displacement component in the second direction and moves towards the direction far away from the product, and then the sliding block 8 drives the first insert 601 to be far away from the product along the second direction, so that die opening of the female die assembly 16 and the male die assembly 6 is realized, and die releasing of the first insert and the product is realized.

When the slide block 8 slides relative to the male die assembly 6 along the second direction, the slide block 8 can receive the friction force of the male die assembly 6 along the second direction, and in order to reduce the friction force of the male die assembly 6 along the second direction when the slide block 8 moves along the second direction, the die in the embodiment further comprises a marble 10 and a supporting rod 11, one end of the supporting rod 11 is connected to the male die assembly 6, the marble 10 is connected to the other end of the supporting rod 11, and the marble 10 abuts against the surface of the slide block 8 for sliding fit with the male die assembly 6. Through setting up marble 10 butt in slider 8, slider 8 becomes rolling friction with punch assembly 6 relative slip time at least part to make holistic frictional force reduce, can guarantee that slider 8 more smoothly with punch assembly 6 relative slip, thereby guarantee that first inserts 601 can more smoothly with product surface separation.

In order to facilitate smooth die assembly of the male die assembly 6 and the female die assembly 16, the male die assembly 6 provided by the embodiment is further provided with a avoiding hole 9, and the avoiding hole 9 is used for avoiding the inclined guide post 7 when the male die assembly 6 and the female die assembly 16 are in die assembly. Through setting up dodging hole 9, can avoid oblique guide pillar 7 and terrace die component 6 butt and make the unable compound die's of terrace die component 6 and die component 16 problem.

In order to manufacture a threaded ring structure on a product, the cavity 15 formed by the male die assembly 6 and the female die assembly 16 in the embodiment further comprises a threaded part, and in order to form the threaded part, the male die assembly 6 in the embodiment further comprises a second insert 602, and the first insert 601 is buckled with the second insert 602 to enclose the threaded part. After the hot melt adhesive enters the threaded part of the cavity 15, a product with a threaded ring structure can be obtained after curing, molding and demolding.

In order to release the product smoothly, the mold in this embodiment further includes an ejector plate 12 and an ejector 13, the ejector plate 12 is connected to the punch assembly 6 and is slidably engaged with the punch assembly 6 along the first direction, one end of the ejector 13 is connected to the ejector plate 12, the other end of the ejector 13 extends to the end of the cavity 15, and the ejector 13 is used for ejecting the formed workpiece from the punch assembly 6 after the punch assembly 6 and the die assembly 16 are separated. In this embodiment, the ejector 13 is shaped like a sleeve, and the ejector 13 is sleeved outside the strip-shaped core 606. Through setting up the liftout 13 cover and locating outside the core 606, can guarantee that liftout 13 can remove relative core 606 when the product drawing of patterns to guarantee that liftout 13 can be ejecting the product smoothly.

Preferably, the mold in the present embodiment further includes an elastic member 14, and the elastic member 14 elastically abuts between the punch assembly 6 and the ejector plate 12. After the ejector 13 ejects the workpiece in the first direction, due to the elastic action, the elastic part 14 can restore the ejector plate 12 and the ejector 13 to the original positions, so that the male die assembly and the female die assembly can be combined again.

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 thereof. 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. A mould comprising a male mould component (6) and a female mould component (16), said male mould component (6) and said female mould component (16) enclosing a mould cavity (15), the male mould component (6) being movable in a first direction relative to the female mould component (16), characterized in that the mould further comprises:

a first nozzle (1) in which a main flow channel (101) is provided;

the first heating assembly (2) is arranged in the first nozzle (1) and is positioned on one side of the main flow channel (101);

the runner plate (3) is internally provided with at least two sub-runners (301), one end of each sub-runner (301) is communicated with the main runner (101), and the other end of each sub-runner (301) is communicated with different positions of the cavity (15);

the second heating assembly (4) is arranged in the runner plate (3) and penetrates through at least two sub-runners (301).

2. The mold according to claim 1, characterized in that it further comprises at least two second nozzles (5), said second nozzles (5) being connected to said female die assembly (16), each of said second nozzles (5) communicating one of said runners (301) with said cavity (15) respectively.

3. The mold of claim 1, further comprising:

the inclined guide post (7) is connected with the female die assembly (16) and is arranged obliquely relative to the first direction;

the sliding block (8) is in sliding fit with the male die assembly (6) along a second direction, and is sleeved on the inclined guide post (7), and the second direction is perpendicular to the first direction;

the male die assembly (6) comprises a first insert (601), the first insert (601) is used for enclosing a part of the die cavity (15), and the first insert (601) is connected with the sliding block (8).

4. The mold according to claim 3, characterized in that the male mold component (6) is further provided with an avoiding hole (9), and the avoiding hole (9) is configured to avoid the inclined guide post (7) when the male mold component (6) and the female mold component (16) are clamped.

5. A mould according to claim 3, characterized in that the cavity (15) comprises a threaded portion and the male mould assembly (6) further comprises a second insert (602), the first insert (601) being snappable with the second insert (602) to enclose the threaded portion.

6. A mould as claimed in claim 3, characterised by further comprising a ball (10) and a support bar (11), the support bar (11) being connected at one end to the punch assembly (6) and the ball (10) being connected at the other end of the support bar (11) so that the ball (10) abuts against a surface of the slide (8) for sliding engagement with the punch assembly (6).

7. Mould according to any of claims 1 to 6, characterized in that said first heating assembly (2) comprises a first strip-shaped resistance wire.

8. Mould according to any one of claims 1 to 6, characterized in that said second heating assembly (4) comprises a second resistance strip.

9. The mold according to any one of claims 1-6, further comprising:

the ejection plate (12) is connected with the male die assembly (6) and is in sliding fit with the male die assembly (6) along the first direction;

and one end of the ejector piece (13) is connected with the ejector plate (12), the other end of the ejector piece (13) extends to the end part of the cavity (15), and the ejector piece (13) is configured to eject the formed workpiece from the male die assembly (6) after the male die assembly (6) and the female die assembly (16) are separated.

10. The die according to claim 9, characterized in that it further comprises an elastic member (14), said elastic member (14) being elastically abutted between said punch assembly (6) and said ejector plate (12), said elastic member (14) being configured to reset said ejector plate (12) after said ejector member (13) ejects said workpiece.