CN221456683U

CN221456683U - Automatic ejection-free pipe fitting mold

Info

Publication number: CN221456683U
Application number: CN202322953447.8U
Authority: CN
Inventors: 蔡晶; 王全喜; 刘洋
Original assignee: Wuhan Liansu Precision Die Co ltd
Current assignee: Wuhan Liansu Precision Die Co ltd
Priority date: 2023-10-31
Filing date: 2023-10-31
Publication date: 2024-08-02
Anticipated expiration: 2033-10-31

Abstract

The utility model relates to the technical field of die manufacturing, in particular to a die for automatically demolding a pipe fitting without ejection. The die comprises: the fixed die assembly comprises a fixed die plate, a fixed die core and a fixed die insert; the movable die assembly is connected with the fixed die assembly in an up-down matching way and comprises a movable die plate and a movable die insert; the fixed die plate, the fixed die core, the fixed die insert, the movable die plate and the movable die insert are matched with each other to form a cavity for producing the pipe fitting; the sliding block is horizontally arranged between the fixed template and the movable template and is used for driving the injection molded pipe fitting to be separated from the fixed template and the movable template; the baffle is fixedly arranged at the top of the movable mould plate and positioned between the sliding block and the movable mould insert, and the baffle is used for limiting the moving distance of the pipe fitting in the process that the pipe fitting moves horizontally along with the sliding block so as to separate the pipe fitting from the sliding block. The utility model effectively solves the technical problems that in the prior art, when a pipe fitting mold is demolded, the ejector pin is used for ejecting the pipe fitting, so that the appearance of the pipe fitting is damaged, and the quality of the pipe fitting is affected.

Description

Automatic ejection-free pipe fitting mold

Technical Field

The utility model relates to the technical field of die manufacturing, in particular to a die for automatically demolding a pipe fitting without ejection.

Background

The mould manufacturing is an indispensable part of the modern manufacturing industry, and relates to various industries such as automobiles, electronics, aerospace and the like, and the quality and efficiency of the mould manufacturing directly influence the quality and production efficiency of products. Along with the continuous development of mold manufacturing, the production efficiency and quality requirements of enterprises on products are higher and higher, and the parting surfaces of the existing molds are in single-layer parting structures, so that the layout of the planes of the molds is overlarge, the mold locking force is insufficient, and the cost of equipment is high.

In order to solve the above problems, the patent document of the utility model with the authorized bulletin number of CN214645397U discloses an injection molding tee pipe fitting mold, a runner and a core are arranged between an upper cavity and a lower cavity of the mold, the ends of every three cores are butted two by two to form three pipe cavities of the tee pipe fitting, the other end of the core is connected with a sliding seat, a plurality of mold cavities which are arranged in space dislocation are formed among the upper cavity, the lower cavity and the butted cores, the runner is provided with a feed inlet and discharge holes which are matched with the number of the mold cavities, during use, by injecting the injection molding material into each mold cavity through the feed inlet of the runner, firstly, the inclined guide rod is pulled away to enable the sliding seat to drive the core to separate from the injection molding tee pipe fitting, then, a thimble fixing plate is pushed by a thimble penetrating through an ejection hole on a lower compound plate, the injection molding runner and the tee pipe fitting are ejected together by using a thimble on the thimble fixing plate, and after ejection is completed, the thimble is driven to reset by a reset rod.

However, when the mold is demolded, the ejector pin fixing plate is pushed by the ejector pin, so that the ejector pin is pushed to move upwards to contact with the injection molded runner and the three-way pipe fitting, and then the ejector pin is pushed upwards continuously, so that the ejector pin ejects the injection molded runner and the three-way pipe fitting together, an impression can be generated on the outer surface of the pipe fitting in the process of ejecting the pipe fitting by the ejector pin, and even the pipe wall of the pipe fitting is burst, so that the appearance and quality of the pipe fitting are influenced.

Disclosure of utility model

The utility model provides a die for automatically demolding a pipe fitting without ejection, which aims to solve the technical problems that in the prior art, when the pipe fitting die is used for demolding, the ejector pins are used for ejecting the pipe fitting, so that the appearance of the pipe fitting is damaged, and the quality of the pipe fitting is affected.

In order to solve the problems, the utility model provides a pipe fitting ejection-free automatic demolding mold which adopts the following technical scheme:

a die for ejection-free automatic stripping of a pipe fitting, comprising:

The fixed die assembly comprises a fixed die plate, wherein a fixed die core and a fixed die insert are arranged in the fixed die plate;

The movable die assembly is connected with the fixed die assembly in an up-down matching way and comprises a movable die plate, and a movable die insert is arranged in the movable die plate;

The fixed die plate, the fixed die core, the fixed die insert, the movable die plate and the movable die insert are mutually matched to form a cavity for producing a pipe fitting;

the sliding block is horizontally arranged between the fixed die plate and the movable die plate and is used for driving the injection-molded pipe fitting to be separated from the fixed die plate and the movable die plate;

Further comprises:

And the baffle is fixedly arranged at the top of the movable mould plate and positioned between the sliding block and the movable mould insert, and is used for limiting the moving distance of the pipe fitting in the process that the pipe fitting moves horizontally along with the sliding block so as to separate the pipe fitting from the sliding block.

The die for automatically demolding the pipe fitting without ejection has the beneficial effects that: through the top fixed mounting baffle at the movable mould board to with the baffle setting between slider and movable mould mold insert, can be when the die sinking, remain injection moulding's pipe fitting at cover half subassembly part along with the slider together earlier, make it break away from with the movable mould mold insert, follow the continuation of die sinking, injection moulding's pipe fitting breaks away from with cover half board and cover half core, only leave on the slider, and move along with the slider both sides about, with the baffle touching of fixing on the movable mould board, along with the continuation of removal, the pipe fitting breaks away from with the slider under the effect of baffle, thereby accomplish the drawing of patterns. Through the arrangement, the pipe fitting demolding device can finish demolding of the pipe fitting without using the ejector pins, and the technical problem that the appearance of the pipe fitting is damaged and the quality of the pipe fitting is affected due to the ejector pins ejected out of the pipe fitting when the pipe fitting mold is demolded in the prior art is effectively solved.

Further, the number of the sliding blocks is multiple, the sliding blocks are slidably arranged between the fixed die plate and the movable die plate, and the sliding blocks are arranged on two opposite sides of the movable die plate in two groups.

Further, the number of the baffles is multiple, and the baffles are divided into two groups and fixedly installed on two opposite sides of the movable template, which correspond to the two sliding blocks.

Further, a push plate is installed at the top of the movable template, and the baffle is fixedly installed on the push plate.

Further, the movable template is fixedly connected with the push plate through a high-strength adhesive.

Further, the high-strength adhesive is connected with the movable template through bolts.

Further, the sliding block is provided with a plurality of inclined guide posts, the inclined guide posts are arranged on the sliding block in a penetrating mode in two groups, the top of each inclined guide post is fixedly connected with the fixed die plate, and the inclined guide posts are used for pushing the fixed die plate to move upwards when being pulled out of the sliding block.

Further, strip holes penetrating up and down are formed in the sliding block, the number of the strip holes is consistent with that of the inclined guide posts, and the inclined guide posts are installed in the strip holes in a penetrating mode.

Further, the sliding block comprises a sliding block core, a sliding block core fixing plate is arranged on the sliding block core in a penetrating mode, and the baffle plate is located on one side, facing the movable die insert, of the sliding block core fixing plate.

Further, a sliding block limiting block is further arranged at the outer end of the sliding block so as to limit the moving distance of the sliding block.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present utility model will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the utility model are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a cross-sectional view of a pipe fitting ejection-free automatic demolding mold provided by the utility model;

FIG. 2 is a front view of a mold for ejecting-free automatic demolding of pipe fittings provided by the utility model;

FIG. 3 is a schematic structural view of a fixed mold assembly of a mold for ejecting-free automatic demolding of pipe fittings;

FIG. 4 is a schematic diagram of a movable die assembly of a die for ejecting-free automatic demolding of pipe fittings;

Fig. 5 is a schematic structural diagram of a slide block of a mold for ejecting-free automatic demolding of a pipe fitting;

FIG. 6 is a schematic diagram of a first mold opening process of a mold for ejecting-free automatic demolding of a pipe;

FIG. 7 is a schematic diagram II of a mold opening process of a mold for ejecting-free automatic demolding of a pipe fitting;

fig. 8 is a schematic diagram III of a mold opening process of a mold for ejecting-free automatic demolding of a pipe fitting;

Fig. 9 is a schematic diagram of a mold opening process of a mold for ejecting-free automatic demolding of a pipe provided by the utility model;

fig. 10 is a schematic diagram five of a mold opening process of a mold for ejecting-free automatic demolding of a pipe.

Reference numerals illustrate:

1. A stationary mold plate; 2. a mold core is fixed; 3. a fixed mold insert; 4. a movable template; 5. a movable mold insert; 6. a slide block; 7. a baffle; 8. a push plate; 9. a you li jiao (excellent force glue); 10. oblique guide posts; 11. a slider core; 12. a slider core fixing plate; 13. a sliding block limiting block; 14. a heat insulating plate; 15. a fixed die holder; 16. a hot runner plate; 17. a hot runner manifold; 18. a hot nozzle; 19. a hot runner junction box; 20. a cavity; 21. a bottom plate; 22. a vertical plate; 23. pressing strips; 24. sizing block; 25. a movable die holder; 26. a mandril backing plate; 27. a push rod fixing plate; 28. a runner ejector rod; 29. a needle return spring; 30. a retractor assembly; 31. a pipe fitting; 32. and (5) a strip hole.

Detailed Description

The following description of the embodiments of the present utility model will be made more complete and clear to those skilled in the art by reference to the figures of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the main conception of the die for automatically demolding pipe fittings without ejection provided by the utility model is as follows: through installing the baffle at the top of movable mould board to set up the baffle between slider and movable mould mold insert, when the die sinking, can break away from injection moulding's pipe fitting in proper order with movable mould mold insert, fixed mould board and cover half core, make it only leave on the slider, along with the continuation of die sinking, the pipe fitting moves along with the slider left and right sides, with the baffle contact, and break away from with the slider gradually under the effect of baffle, thereby can accomplish the drawing of patterns to the pipe fitting under the circumstances that does not influence the outward appearance of pipe fitting.

Having described the basic principles of the present utility model, various non-limiting embodiments of the utility model are described in detail below. Any number of elements in the figures are for illustration and not limitation, and any naming is used for distinction only and not for any limiting sense.

The principles and spirit of the present utility model are explained in detail below with reference to several representative embodiments thereof.

Example 1 of a die for automatically demolding a pipe fitting without ejection provided by the utility model:

As shown in fig. 1 and 2, the mold for ejecting-free automatic demolding of the pipe fitting mainly comprises a fixed mold assembly and a movable mold assembly, wherein a sliding block 6 is horizontally arranged between the fixed mold assembly and the movable mold assembly, and a baffle 7 is arranged at the top of the movable mold assembly.

The structural constitution of the stationary mold assembly is described below. As shown in fig. 1 and 3, the fixed mold assembly includes a fixed mold plate 1, and a fixed mold core 2 and a fixed mold insert 3 which are disposed in the fixed mold plate 1, and the number of the fixed mold core 2 and the fixed mold insert 3 is two. Specifically, the heat insulating plate 14, the fixed die seat 15 and the hot runner plate 16 are sequentially arranged above the fixed die plate 1 from top to bottom, the hot runner flow dividing plate 17 is arranged at the central part of the hot runner plate 16, four hot nozzles 18 used for injection molding and extending into the fixed die plate 1 are connected to the bottom of the hot runner flow dividing plate 17, the fixed die core 2 is arranged at the periphery of the hot nozzle 18, and the fixed die insert 3 is arranged between the fixed die plate 1 and the fixed die core 2 and between the fixed die core 2 and the hot nozzle 18. In addition, a hot runner junction box 19 is provided on the outside of the stationary platen 1.

Next, the structural configuration of the movable mold assembly will be described. As shown in fig. 1 and 4, the movable mold assembly comprises a movable mold plate 4, movable mold inserts 5 matched with a fixed mold insert 3 and a fixed mold core 2 are arranged in the movable mold plate 4, the number of the movable mold inserts 5 is two, the periphery of the top surface of the movable mold plate 4 is fixedly provided with a high-strength adhesive 9 through bolts, the top surface of the high-strength adhesive 9 is provided with a push plate 8, and the top surface of the push plate 8 is fixedly provided with a baffle 7. The fixed die plate 1, the fixed die core 2, the fixed die insert 3, the movable die plate 4 and the movable die insert 5 are matched with each other to form a cavity 20 for producing the pipe fitting.

The structural configuration of the slider 6 is described next. As shown in fig. 1 and 5, the number of the sliding blocks 6 is four, the four sliding blocks 6 are horizontally arranged between the fixed die plate 1 and the movable die plate 4 and are distributed on the left side and the right side of the movable die plate 4 in two groups, and each side is provided with two sliding blocks 6; every slider 6 all includes the bottom plate 21 that the level set up, the one end of the orientation movable mould mold insert 5 of bottom plate 21 is provided with the vertical board 22 with bottom plate 21, the orientation movable mould mold insert 5 one side of vertical board 22 is provided with slider core 11, wear to be equipped with slider core fixed plate 12 and baffle 7 on the slider core 11, baffle 7 is located the one side of deviating from vertical board 22 of slider core fixed plate 12, the both ends of the length direction of bottom plate 21 are provided with layering 23, the one end of keeping away from movable mould mold insert 5 of layering 23 is provided with slider stopper 13, slider stopper 13 is used for limiting the travel distance of slider 6.

In addition, two strip holes 32 are formed in each bottom plate 21, the axis of the length direction of each strip hole 32 is parallel to the axis of the extending direction of the corresponding sliding block limiting block 13, an inclined guide post 10 is installed in each strip hole 32 in a penetrating mode, the top of each inclined guide post 10 is fixedly connected with the corresponding fixed die plate 1, and the inclined guide posts 10 are used for pushing the fixed die plate 1 to move upwards when the sliding block 6 is pulled out.

The periphery of the bottom of the movable die plate 4 is provided with sizing blocks 24, the bottom of the sizing blocks 24 is provided with a movable die holder 25, ejector rod base plates 26 and ejector rod fixing plates 27 are arranged on the movable die holder 25 and between the sizing blocks 24 from bottom to top, the ejector rod base plates 26 are provided with runner ejector rods 28 penetrating through the ejector rod fixing plates 27, the movable die plate 4 and the movable die insert 5 and extending to the bottom of the fixed die insert 3, and the runner ejector rods 28 are used for ejecting a material head in a runner; a return spring 29 is also arranged between the ejector rod fixing plate 27 and the movable template 4.

The outer surfaces of the fixed die plate 1 and the movable die plate 4 are also provided with draw hook assemblies 30, and the draw hook assemblies 30 drive the ejector rod fixing plate 27 to move in the die opening process so as to eject the stub bars in the movable die inserts 5, reduce the injection molding period and improve the yield of the die.

The die opening process of the die for ejecting-free automatic die release of the pipe fitting is shown in fig. 6 to 10.

The working principle of the die for automatically demolding the pipe fitting without ejection provided by the utility model is as follows: injection molding is carried out in the hot runner plate 16 through an injection molding machine, injection molding materials are evenly distributed to four hot nozzles 18 through the hot runner flow distribution plate 17 and then respectively enter each cavity 20, and each four cavities 20 share one hot nozzle 18, so that the number of main runners and flow distribution channels is reduced, the purpose of reducing water gap materials of the mold is realized, waste of raw materials is avoided, and production cost is saved; when the injection molding is completed and the mold opening is completed, under the dual actions of the packing force of the pipe fitting 31 and the optimal force glue 9, the pipe fitting 31 moves along with the slide block core 11 to be separated from the movable mold cavity, and remains to the fixed mold part; as the die opening continues, the inclined guide post 10 continues to move upwards, a gap is reserved between the inclined guide post 10 and the sliding block 6, so that the pipe fitting 31 is separated from the fixed die plate 1 and the fixed die core 2 and is left on the sliding block core 11; the injection molding machine continues to open the mold, under the action of the inclined guide post 10, the pipe fitting 31 moves along with the sliding block 6, the sliding block core 11 and the sliding block core fixing plate 12 to the left and right sides, in the moving process, the pipe fitting 31 contacts with the fixed baffle 7, and along with the continuing of the movement, the pipe fitting 31 is separated from the sliding block core 11 under the blocking action of the baffle 7, and finally the demolding is realized; in addition, in the process of die sinking, the drag hook assembly 31 drives the ejector rod fixed plate 27 to move, and the stub bar in the movable die insert 5 is ejected out, so that the injection molding cycle is shortened, and the yield of the die is improved.

Example 2 of the die for ejecting-free automatic demolding of pipe fittings provided by the utility model:

the differences from example 1 are mainly that:

In example 1, the number of the heat nozzle, the slide block and the baffle plate is four.

In this embodiment, the number of the sliding blocks and the number of the baffles are the same, and the number of the sliding blocks and the number of the baffles are determined according to specific use requirements.

Example 3 of the die for ejecting-free automatic demolding of pipe fittings provided by the utility model:

the differences from example 1 are mainly that:

in embodiment 1, two oblique guide posts are respectively arranged on the bottom plate of each sliding block in a penetrating way.

In this embodiment, one or more oblique guide posts are installed on the bottom plate of each slider.

It will be further understood by those skilled in the art from the foregoing description of the present specification that terms such as "upper", "lower", "left", "right", "length", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate an azimuth or a positional relationship, are based on the azimuth or the positional relationship shown in the drawings of the present specification, are for convenience of explanation of aspects of the present utility model and for simplicity of description only, and do not explicitly show or imply that the devices or elements involved must have the specific azimuth, be constructed and operated in the specific azimuth, and thus the azimuth or positional relationship terms described above should not be construed or construed as limitations of aspects of the present utility model.

In addition, in the description of the present specification, the meaning of "plurality" means at least two, for example, two, three or more, etc., unless specifically defined otherwise.

Claims

1. A die for ejection-free automatic stripping of a pipe fitting, comprising:

Characterized by further comprising:

2. The mold for automatically demolding a pipe fitting without ejection according to claim 1, wherein the number of the sliding blocks is plural, the plural sliding blocks are slidably installed between the fixed mold plate and the movable mold plate, and are arranged on two opposite sides of the movable mold plate in two groups.

3. The mold for automatically demolding a pipe fitting without ejection according to claim 2, wherein the number of the baffles is plural, and the plurality of baffles are divided into two groups and fixedly installed on two opposite sides of the movable mold plate corresponding to the two sliding blocks.

4. A pipe fitting ejection-free automatic demolding mold as claimed in any one of claims 1 to 3, wherein a push plate is mounted on top of the movable die plate, and the baffle is fixedly mounted on the push plate.

5. The mold for automatically demolding a pipe fitting without ejection according to claim 4, wherein the movable mold plate and the pushing plate are fixedly connected through a high-strength adhesive.

6. The mold for ejecting-free automatic demolding of pipe fittings according to claim 5, wherein the force optimizing glue is connected with the movable mold plate through bolts.

7. The mold for automatically demolding a pipe fitting without ejection according to claim 2 or 3, further comprising a plurality of inclined guide posts, wherein the plurality of inclined guide posts are arranged on the sliding block in a penetrating manner in two groups, the top of each inclined guide post is fixedly connected with the fixed mold plate, and the inclined guide posts are used for pushing the fixed mold plate to move upwards when the inclined guide posts are pulled away from the sliding block.

8. The die for automatically demolding a pipe fitting without ejection according to claim 7, wherein strip holes penetrating up and down are formed in the sliding block, the number of the strip holes is identical to that of the inclined guide posts, and the inclined guide posts are arranged in the strip holes in a penetrating mode.

9. A pipe fitting ejection-free automatic demolding mold according to any one of claims 1 to 3, characterized in that the slide comprises a slide core, a slide core fixing plate is penetrated on the slide core, and the baffle plate is positioned on one side of the slide core fixing plate, which faces the movable mold insert.

10. A pipe fitting ejection-free automatic demolding mold as claimed in any one of claims 1 to 3, wherein a slide stopper is further provided at an outer end of the slide block to limit a moving distance of the slide block.