CN117817974A - Processing method of intelligent equipment shell - Google Patents

Abstract

The invention discloses a processing method of an intelligent equipment shell, which comprises the following steps: step 1, after injection molding is completed, the female template drags the male template to move upwards together in a die closing state D1, and in the process: the bullet entering springboard provided with the male mold entrances moves upwards along with the male mold plate D1 under the action of the springs to reach the stop point of the entrances limiting structure, and the inner wall of the hollow cylinder moves upwards by D1 relative to the fixed barrel needle; step 2, the male template continues to move upwards until the male template moves upwards relative to the male template pad plate until D2 reaches a stop point of the male template limiting structure so that the male template does not move upwards any more, and in the process: the outer wall of the hollow cylinder moves upwards by D2-D1 relative to the male mold insert which stops moving after the stroke is finished; and 3, continuously moving the female template upwards to separate from the male template, and moving the ejector plate provided with the ejector sleeve upwards under the driving of the ejector rod of the injection molding machine so that the ejector sleeve pushing part contacted with the lower end surface of the hollow cylinder is separated from the male die core upwards. The invention solves the problems of deformation and shortening of the length dimension of the longer hollow cylinder in the demolding process.

Description

Processing method of intelligent equipment shell

Technical Field

The invention relates to a processing method of an intelligent equipment shell, and belongs to the technical field of injection molds.

Background

The injection mold is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions. Injection molding is a process used in mass production of parts of complex shape.

The ejector sleeve ejection is the most common structure in the injection mold, the parts forming the ejector sleeve ejection assembly comprise an ejector sleeve and an ejector sleeve needle, the ejector sleeve needle forms the inner wall of the hollow column, the ejector sleeve forms the bottom plane of the hollow column, and the ejector sleeve ejection assembly has the function of ejecting the hollow column. The ejector sleeve needle is fixed on the die back plate and cannot move due to die opening and ejection, the ejector sleeve is fixed on the upper ejector plate, an ejection assembly is integrally formed by fixing screws of the upper ejector plate and the lower ejector plate, and the ejector rod applies acting force to the lower ejector plate, so that the product is separated from the male die core and the ejector sleeve needle.

However, the ejector sleeve ejection needs to overcome the friction force and the packing force between the inner wall and the outer wall of the hollow column of the product and the mould, the ejection area of the ejector sleeve structure is small, and the hollow column of the plastic product is stressed to be shortened or distorted and deformed during ejection.

Disclosure of Invention

The invention aims to provide a processing method of an intelligent equipment shell, which solves the problems of deformation and shortening of the length dimension of a longer hollow cylinder in the demolding process.

In order to achieve the above purpose, the invention adopts the following technical scheme: a processing method of an intelligent equipment shell, which is used for injection molding of parts and is based on an injection mold, wherein the injection mold comprises the following components: the mold comprises a female mold plate provided with a female mold core, a male mold plate positioned below the female mold plate and provided with a male mold core, a rear mold fixing plate positioned below the male mold plate, and 2 mold legs arranged between the male mold plate and the rear mold fixing plate, wherein the lower surfaces of the 2 mold legs are respectively connected with the upper surface of the rear mold fixing plate, a thimble plate capable of moving up and down is horizontally arranged between the 2 mold legs arranged at intervals, a cavity for forming the part is formed between the female mold core and the male mold core, and the part comprises a body and a hollow cylinder formed on the body;

a male die backing plate is arranged below the male die plate, edges on two sides of the lower surface of the male die backing plate are respectively connected with the upper surfaces of 2 die feet, a bullet-entering springboard is arranged between the male die backing plate and the male die plate, a male die insert corresponding to a hollow cylinder is arranged on the bullet-entering springboard, the upper part of the male die insert is embedded into a male die core, the upper part of a barrel with the lower end connected with the thimble plate penetrates into a through hole formed in the center of the male die insert, the upper part of a barrel needle with the lower end fixedly arranged on a rear die fixing plate is correspondingly embedded into the barrel, so that a sub-type cavity for forming the hollow cylinder is formed between the male die insert and the barrel needle, and at least 2 springs in a compressed state are arranged between the male die backing plate and the bullet-entering springboard;

a bullet entering limiting structure is connected between the bullet entering springboard and the male die backing plate or the rear die fixing plate, so that the stroke of the bullet entering springboard and the male die backing plate which can move relatively is D1, and a male die limiting structure is connected between the male die plate and the male die backing plate, so that the stroke of the male die plate and the male die backing plate which can move relatively is D2, and D2 is larger than D1;

the processing method comprises the following steps:

step 1, after injection molding is completed, the female template drags the male template to move upwards together in a die closing state D1, and in the process: the bullet entering springboard provided with the male mold entrances moves upwards along with the male mold plate D1 under the action of the springs to reach the stop point of the entrances limiting structure, and the inner wall of the hollow cylinder moves upwards by D1 relative to the fixed barrel needle;

step 2, the male template continues to move upwards until the male template moves upwards relative to the male template pad plate until D2 reaches a stop point of the male template limiting structure so that the male template does not move upwards any more, and in the process: the outer wall of the hollow cylinder moves upwards by D2-D1 relative to the male mold insert which stops moving after the stroke is finished;

and 3, continuously moving the female template upwards to separate from the male template, and moving the ejector plate provided with the ejector sleeve upwards under the driving of the ejector rod of the injection molding machine so that the ejector sleeve pushing part contacted with the lower end surface of the hollow cylinder is separated from the male die core upwards.

The further improved scheme in the technical scheme is as follows:

1. in the scheme, 4 hollow columns are formed on the body of the part, and the hollow columns are mounting columns.

2. In the scheme, the length of the hollow cylinder is larger than 32mm.

3. In the scheme, D1 is smaller than the length of the hollow cylinder, and D2 is larger than the length of the hollow cylinder.

4. In the above-mentioned scheme, go into son limit structure includes: the lower ends of the height limiting screws, the upper ends of which are connected with the bullet entering springboard, penetrate through the male die base plate and are embedded into the height limiting grooves formed in the upper surface of the rear die fixing plate, the lower ends of the height limiting screws are provided with radial outward flange parts, and when the bullet entering springboard and the male die base plate are in a fitting state, a travel gap D1 is formed between the upper end surfaces of the flange parts and the lower surface of the male die base plate.

5. In the above scheme, limit for height screw further includes the body and suit in the spacing sleeve in the body outside, the spring suit is in the spacing sleeve outside, flange portion sets up on the spacing sleeve, spacing sleeve and public mould pad board sliding fit.

6. In the above-mentioned scheme, public mould limit structure includes: the male die limiting sleeve is provided with a limiting flange part which is outwards along the radial direction, and when the male die backing plate and the male die plate are in a fitting state, a travel gap D2 is formed between the limiting flange part and the inner wall of one end of the limiting groove.

7. In the above scheme, the lower extreme and the public mould backing plate fixed connection of public mould spacing screw, public mould upper surface has seted up the spacing groove, be in the laminating state between public mould backing plate and the public mould board, clearance between the lower surface of spacing flange portion and the spacing groove lower extreme inner wall is D2.

8. In the above scheme, the ejector plate further comprises an upper ejector plate and a lower ejector plate, the upper ejector plate and the lower ejector plate are fixedly connected through screws, and the ejector sleeve is arranged on the upper ejector plate.

9. In the scheme, at least 2 middle brackets are connected between the rear die fixing plate and the male die cushion plate, penetrate through the ejector plate and are in sliding fit with the ejector plate through a middle bracket sleeve.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the processing method of the intelligent equipment shell, in the demolding process of the injection molded part with the hollow cylinder, the part is moved upwards for demolding in three sections, and multidirectional coating of the part is ensured in the demolding process of the previous two sections, so that the condition that the hollow cylinder of the part is shortened or distorted and deformed due to overlarge packing force between the hollow cylinder and the driver needle is avoided, and the appearance accuracy and the yield of the product are improved.

Drawings

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

FIG. 2 is a schematic diagram of an injection mold according to the present invention;

FIG. 3 is a cross-sectional view of an injection mold according to the present invention;

FIG. 4 is a schematic structural diagram of step 1 in the processing method of the intelligent equipment shell of the invention;

FIG. 5 is a schematic structural diagram of step 2 in the processing method of the smart device shell of the present invention;

fig. 6 is a schematic structural diagram of step 3 in the processing method of the smart device shell of the present invention.

In the above figures: 1. a master template; 2. a female mold core; 3. a shutter; 4. a male mold core; 5. a male template; 6. a male mold insert; 7. a barrel; 8. a bobbin needle; 9. jumping the upper plate by a bullet; 10. jumping the lower plate by a bullet; 11. a height limiting sleeve; 12. a spring; 13. height limiting screws; 131. a flange portion; 14. a male die backing plate; 15. a mold foot; 16. an upper ejector plate; 17. a lower ejector plate; 18. a rear mold fixing plate; 19. a heat insulating plate; 20. middle toshima; 21. a middle toshiba sleeve; 22. returning a needle; 23. a needle return spring; 24. a stop block; 251. a male die limit screw; 252. a male die limiting sleeve; 253. a limit flange portion; 26. a guide post; 27. guide sleeve; 100. a part; 101. a body; 102. a hollow column.

Detailed Description

The invention is further described below with reference to examples:

in the description of this patent, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in this patent will be understood by those of ordinary skill in the art in a specific context.

Example 1: a method for processing a smart device housing for injection molding of a part 100, the method comprising: the female die comprises a female die plate 1 provided with a female die core 2, a male die plate 5 positioned below the female die plate 1 and provided with a male die core 4, a rear die fixing plate 18 positioned below the male die plate 5, and 2 die legs 15 arranged between the male die plate 5 and the rear die fixing plate 18, wherein the lower surfaces of the 2 die legs 15 are respectively connected with the upper surface of the rear die fixing plate 18, a thimble plate capable of moving up and down is horizontally arranged between the 2 die legs 15 arranged at intervals, a cavity for forming a part 100 is formed between the female die core 2 and the male die core 4, and the part 100 comprises a body 101 and a hollow cylinder 102 formed on the body 101;

a male die backing plate 14 is arranged below the male die plate 5, edges on two sides of the lower surface of the male die backing plate 14 are respectively connected with the upper surfaces of 2 die legs 15, a bullet-entering springboard is arranged between the male die backing plate 14 and the male die plate 5, a male die insert 6 corresponding to the hollow cylinder 102 is arranged on the bullet-entering springboard, the upper part of the male die insert 6 is embedded into a male die core 4, the upper part of a driver 7 with the lower end connected with the thimble plate penetrates into a through hole formed in the center of the male die insert 6, the lower end of the driver needle 8 fixedly arranged on a rear die fixing plate 18 is correspondingly embedded into the driver 7, so that a sub cavity for forming the hollow cylinder 102 is formed between the male die insert 6, the driver 7 and the driver needle 8, the driver needle is used for forming the inner wall of the hollow cylinder, the formed hollow cylinder is tightly covered on the driver needle to cause uneasy demoulding, and at least one spring backing plate 12 is arranged between the male die insert 6 and the bullet-entering spring plate 14;

a sub-limiting structure is connected between the sub-entering springboard and the male die backing plate 14 or the rear die fixing plate 18, so that the stroke of the sub-entering springboard and the male die backing plate 14 which can move relatively is D1, and a male die limiting structure is connected between the male die plate 5 and the male die backing plate 14, so that the stroke of the male die plate 5 and the male die backing plate 14 which can move relatively is D2 and D2 is larger than D1;

the processing method comprises the following steps:

after the injection molding is completed, the female die plate 1 drags the male die plate 5 to move upwards together in a die closing state D1, and in the process: the bullet entering springboard provided with the male mold bullet 6 moves upwards D1 along with the male mold plate 5 under the action of the spring 12 to reach a stop point of the bullet entering limiting structure, the inner wall of the hollow cylinder 102 moves upwards D1 relative to the fixed barrel needle 8, and core pulling action of the inner wall of the first section of hollow cylinder is completed;

step 2, the male die plate 5 continues to move upwards until the male die plate 5 moves upwards relative to the male die backing plate 14 and D2 reaches the stop point of the male die limiting structure, so that the male die plate 5 does not move upwards any more, and in the process: the outer wall of the hollow cylinder 102 moves upwards by D2-D1 relative to the male mold insert 6 which stops moving after the stroke is finished, and the demolding action of the molding surface of the outer wall of the second section of hollow cylinder is completed;

step 3, the female template 1 continues to move upwards to be separated from the male template 5, and the ejector plate provided with the ejector sleeve 7 moves upwards under the drive of the ejector rod of the injection molding machine, so that the ejector sleeve 7 contacted with the lower end surface of the hollow cylinder 102 pushes the part 100 to be separated from the male die core 4 upwards, and the ejection demoulding action of the third section is completed.

4 hollow columns 102 are formed on the body 101 of the part 100, and the hollow columns 102 are mounting columns; the length of the hollow column 102 is greater than 32mm; d1 is less than the length of hollow cylinder 102 and D2 is greater than the length of hollow cylinder 102;

the insert limiting structure comprises: the height limiting screws 13 corresponding to the springs 12, wherein the lower ends of the height limiting screws 13, the upper ends of which are connected with the bullet-entering springboard, penetrate through the male die backing plate 14 and are embedded into the height limiting grooves formed in the upper surface of the rear die fixing plate 18, the lower ends of the height limiting screws 13 are provided with a flange part 131 which is outwards along the radial direction, and when the bullet-entering springboard is in a bonding state with the male die backing plate 14, a travel gap D1 is formed between the upper end surface of the flange part 131 and the lower surface of the male die backing plate 14;

the height-limiting screw 13 further comprises a body and a limiting sleeve 11 sleeved outside the body, the spring 12 is sleeved outside the limiting sleeve 11, the flange part 131 is arranged on the limiting sleeve 11, and the limiting sleeve 11 is in sliding fit with the male die cushion plate 14;

the male die limiting structure comprises: a male die limit screw 251 with one end fixedly connected with the male die backing plate 14 or the male die plate 5, and a male die limit sleeve 252 sleeved outside the male die limit screw 251, wherein the other end of the male die limit screw 251 is embedded into a limit groove arranged on the male die plate 5 or the male die backing plate 14, one end of the male die limit sleeve 252 positioned in the limit groove is provided with a limit flange part 253 which is outwards along the radial direction, and when the male die backing plate 14 and the male die plate 5 are in a fitting state, a travel gap D2 is arranged between the limit flange part 253 and the inner wall of one end of the limit groove;

the lower end of the male die limit screw 251 is fixedly connected with the male die pad 14, the upper surface of the male die plate 5 is provided with the limit groove, and when the male die pad 14 and the male die plate 5 are in a fitting state, a gap between the lower surface of the limit flange 253 and the inner wall of the lower end of the limit groove is D2.

Example 2: a method for processing a smart device housing for injection molding of a part 100, the method comprising: the female die comprises a female die plate 1 provided with a female die core 2, a male die plate 5 positioned below the female die plate 1 and provided with a male die core 4, a rear die fixing plate 18 positioned below the male die plate 5, and 2 die legs 15 arranged between the male die plate 5 and the rear die fixing plate 18, wherein the lower surfaces of the 2 die legs 15 are respectively connected with the upper surface of the rear die fixing plate 18, a thimble plate capable of moving up and down is horizontally arranged between the 2 die legs 15 arranged at intervals, a cavity for forming a part 100 is formed between the female die core 2 and the male die core 4, and the part 100 comprises a body 101 and a hollow cylinder 102 formed on the body 101;

a male die backing plate 14 is arranged below the male die plate 5, edges on two sides of the lower surface of the male die backing plate 14 are respectively connected with the upper surfaces of 2 die legs 15, a bullet-entering springboard is arranged between the male die backing plate 14 and the male die plate 5, a male die insert 6 corresponding to the hollow cylinder 102 is arranged on the bullet-entering springboard, the upper part of the male die insert 6 is embedded into a male die core 4, the upper part of a driver 7 with the lower end connected with the thimble plate penetrates into a through hole formed in the center of the male die insert 6, the lower end of the driver needle 8 fixedly arranged on a rear die fixing plate 18 is correspondingly embedded into the driver 7, so that a sub cavity for forming the hollow cylinder 102 is formed between the male die insert 6, the driver 7 and the driver needle 8, the driver needle is used for forming the inner wall of the hollow cylinder, the formed hollow cylinder is tightly covered on the driver needle to cause uneasy demoulding, and at least one spring backing plate 12 is arranged between the male die insert 6 and the bullet-entering spring plate 14;

a sub-limiting structure is connected between the sub-entering springboard and the male die backing plate 14 or the rear die fixing plate 18, so that the stroke of the sub-entering springboard and the male die backing plate 14 which can move relatively is D1, and a male die limiting structure is connected between the male die plate 5 and the male die backing plate 14, so that the stroke of the male die plate 5 and the male die backing plate 14 which can move relatively is D2 and D2 is larger than D1;

the processing method comprises the following steps:

after the injection molding is completed, the female die plate 1 drags the male die plate 5 to move upwards together in a die closing state D1, and in the process: the bullet entering springboard provided with the male mold bullet 6 moves upwards D1 along with the male mold plate 5 under the action of the spring 12 to reach a stop point of the bullet entering limiting structure, the inner wall of the hollow cylinder 102 moves upwards D1 relative to the fixed barrel needle 8, and core pulling action of the inner wall of the first section of hollow cylinder is completed;

step 2, the male die plate 5 continues to move upwards until the male die plate 5 moves upwards relative to the male die backing plate 14 and D2 reaches the stop point of the male die limiting structure, so that the male die plate 5 does not move upwards any more, and in the process: the outer wall of the hollow cylinder 102 moves upwards by D2-D1 relative to the male mold insert 6 which stops moving after the stroke is finished, and the demolding action of the molding surface of the outer wall of the second section of hollow cylinder is completed;

step 3, the female template 1 continues to move upwards to be separated from the male template 5, and the ejector plate provided with the ejector sleeve 7 moves upwards under the drive of the ejector rod of the injection molding machine, so that the ejector sleeve 7 contacted with the lower end surface of the hollow cylinder 102 pushes the part 100 to be separated from the male die core 4 upwards, and the ejection demoulding action of the third section is completed.

The ejector plate further comprises an upper ejector plate 16 and a lower ejector plate 17, the upper ejector plate 16 and the lower ejector plate 17 which are overlapped are fixedly connected through screws, and the ejector sleeve 7 is arranged on the upper ejector plate 16;

at least 2 middle brackets 20 are connected between the rear die fixing plate 18 and the male die cushion plate 14, and the middle brackets 20 penetrate through the ejector plate and are in sliding fit with the ejector plate through a middle bracket sleeve 21;

at least 2 grooves are formed in the upper surface of the male template 5 at intervals, a stop block 24 is embedded in each groove, a vertically arranged return needle 22 is connected to the central area of the lower surface of each stop block 24, the lower end of the return needle 22 in sliding fit with the male template 5 is fixedly connected with a thimble plate, a return needle spring 23 is arranged between the thimble plate and the male template 5 outside the return needle 22, a position avoiding through hole for the return needle spring 23 to penetrate is formed in the male template base plate 14, and a groove for embedding the upper end of the return needle spring 23 is formed in the lower surface of the male template 5;

the above part 100 is a housing part of an intelligent device;

a shutter 3 matched with the opening on the female die plate 1 is arranged on the male die plate 5 and is used for connecting the male die plate 5 and the female die plate 1;

a heat insulation plate 19 is mounted on the lower surface of the rear mold fixing plate 18;

at least 2 guide posts 26 are connected between the male template 5 and the female template 1, and the upper ends of the guide posts 26, the lower ends of which are fixedly connected with the male template 5, are in sliding fit with the female template 1 through guide sleeves 27;

the opposite surfaces of the male die pad 14 and the bullet-entering springboard are respectively provided with a limit groove for embedding the spring 12;

the bullet entering springboard further comprises a bullet entering springboard 9 and a bullet entering springboard 10, and the overlapped bullet entering springboard 9 and bullet entering springboard 10 are fixedly connected through screws;

the bullet-entering upper jump plate 9 is embedded into a groove formed on the lower surface of the male die plate 5, and the bullet-entering lower jump plate 10 is embedded into a groove formed on the upper surface of the male die base plate 14;

the upper end surface of the male mold insert 6 is coplanar with the upper surface of the male mold insert 4.

Working principle: in the mold opening process after the injection molding of the part is finished, the female mold plate drags the male mold plate to synchronously move upwards through the damping force of the shutter so that the male mold plate and the male mold cushion plate are gradually separated, at the moment, the bullet entering springboard provided with the male mold insert synchronously moves along with the male mold plate under the action of the spring, and the barrel needle arranged on the rear mold fixing plate keeps still, so that the molded part moves upwards and away from the barrel needle under the combined action of the male mold insert and the male mold insert to realize core pulling, and the situation that the hollow cylinder of the part is stressed to be shortened or distorted and deformed in the demolding process due to overlarge packing force between the hollow cylinder of the part and the barrel needle can be avoided;

under the action of the height limiting screw and the male die backing plate, the bullet entering springboard and the male die entering can only separate part of the hollow cylinder from the barrel needle along with the upward movement distance D1 of the male die backing plate, so that the demoulding of the inner wall of the upper part of the hollow cylinder is realized;

after the bullet entering springboard and the male die entering body stop moving, the male die plate continues to move upwards until the male die plate moves upwards relative to the male die cushion plate D2 to reach a stop point of the male die limiting structure so that the male die plate does not move upwards any more, and in the process: the outer wall of the hollow cylinder moves upwards by D2-D1 relative to the male mold insert which stops moving after the stroke is finished;

the female die plate continues to move upwards to be separated from the male die plate, and the ejector plate provided with the ejector sleeve moves upwards under the drive of the ejector rod of the injection molding machine, so that the ejector sleeve contacted with the lower end surface of the hollow cylinder pushes the part to be separated from the male die core upwards, and the dimensional accuracy of the appearance of the hollow cylinder after demolding is further improved.

Further explanation of the examples is as follows:

the patent discloses a three-section demoulding technology of a hollow column mould with the length larger than 32mm, which solves the problems of ejection deformation and length shortening of a longer hollow column, divides the packing force of the hollow column into three sections for demoulding, and overcomes the defect that the packing force of each section is only one third of that of an original barrel structure, thereby realizing the required precision of products;

the upper and lower plates of the male mold spring and the male mold insert are connected into a spring insert subassembly by means of screws, the spring male mold plate and the equal-height limit screws are fixed on a rear plate fixing plate, a needle cylinder part is connected with the upper and lower ejector pin plates by means of a needle return, a needle cylinder ejection assembly is formed, the spring insert subassembly is placed below the male mold fixing plate, the spring insert subassembly is limited by means of a height limit sleeve and the height limit screws, the spring male mold plate is positioned on a male mold cushion plate, the spring male mold insert subassembly and a second section of product are ejected by means of sliding up and down of a male mold guide post arranged on the male mold cushion plate, an ejector rod of an injection molding machine acts on a lower ejector plate, and a force is applied to the ejection assembly to complete the third section of ejection of the product;

the sectional ejection of the product with the longer hollow column is realized, the adverse phenomena of column deformation and shortening caused by overlarge ejection force of the ejector sleeve needle are solved, the structure of the die is optimized, and the bottleneck problem of product development is thoroughly solved.

When the processing method of the intelligent equipment shell is adopted, in the demolding process of the injection molded part with the hollow cylinder, the part is moved upwards for demolding in three sections, and multidirectional coating of the part is ensured in the demolding process of the previous two sections, so that the condition that the hollow cylinder is shortened or distorted and deformed due to overlarge packing force between the hollow cylinder of the part and the driver needle is avoided, and the appearance precision and the yield of the product are improved.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims (10)

1. A method of processing a smart device housing for injection molding of a part (100), based on an injection mold comprising: the female die plate (1) of installing female die benevolence (2), be located female die plate (1) below and install public template (5) of public mould benevolence (4), be located back mould fixed plate (18) of public template (5) below and set up 2 mould feet (15) between public template (5) and back mould fixed plate (18), 2 mould foot (15) respective lower surface is connected with the upper surface of back mould fixed plate (18), and the level is provided with a thimble board that can reciprocate between 2 mould feet (15) of interval setting, form between female die benevolence (2) and public mould benevolence (4) and be used for shaping die cavity of part (100), its characterized in that: the part (100) comprises a body (101) and a hollow column (102) formed on the body (101);

a male die backing plate (14) is arranged below the male die plate (5), edges on two sides of the lower surface of the male die backing plate (14) are respectively connected with the upper surfaces of 2 die pins (15), a bullet entering springboard is arranged between the male die backing plate (14) and the male die plate (5), a male die insert (6) corresponding to the hollow cylinder (102) is arranged on the bullet entering springboard, the upper part of the male die insert (6) is embedded into a male die core (4), the upper part of a barrel (7) with the lower end connected with the ejector pin plate penetrates into a through hole formed in the center of the male die insert (6), the upper part of a barrel needle (8) with the lower end fixedly arranged on a rear die fixing plate (18) is correspondingly embedded into the barrel (7), a bullet cavity for forming the hollow cylinder (102) is formed between the male die insert (6) and the barrel (7), and at least 2 springs (12) are arranged between the male die backing plate (14) and the bullet entering springboard;

an insert limiting structure is connected between the insert spring plate and the male die cushion plate (14) or the rear die fixing plate (18), so that the stroke of the insert spring plate and the male die cushion plate (14) capable of relatively moving is D1, and a male die limiting structure is connected between the male die plate (5) and the male die cushion plate (14), so that the stroke of the insert spring plate (5) and the male die cushion plate (14) capable of relatively moving is D2 and D2 is larger than D1;

the processing method comprises the following steps:

after the injection molding is finished, the female template (1) drags the male template (5) to move upwards D1 together in a die closing state, and in the process: the bullet entering springboard provided with the male mold bullet (6) moves upwards D1 along with the male mold plate (5) under the action of the spring (12) to reach a stop point of the bullet entering limiting structure, and the inner wall of the hollow cylinder (102) moves upwards D1 relative to the fixed barrel needle (8);

step 2, the male die plate (5) continues to move upwards until the male die plate (5) moves upwards relative to the male die cushion plate (14) and D2 reaches a stop point of the male die limiting structure, so that the male die plate (5) does not move upwards any more, and in the process: the outer wall of the hollow column body (102) moves upwards by D2-D1 relative to the male mold insert (6) which stops moving after the stroke is finished;

step 3, the female template (1) continues to move upwards to be separated from the male template (5), and the ejector pin plate provided with the ejector pin barrel (7) moves upwards under the driving of the ejector pin of the injection molding machine, so that the ejector pin barrel (7) contacted with the lower end surface of the hollow cylinder (102) pushes the part (100) to be separated from the male die core (4) upwards.

2. The method for processing the shell of the intelligent device according to claim 1, wherein: 4 hollow columns (102) are formed on the body (101) of the part (100), and the hollow columns (102) are mounting columns.

3. The method for processing the shell of the intelligent device according to claim 1, wherein: the hollow cylinder (102) has a length greater than 32mm.

4. The method for processing the shell of the intelligent device according to claim 1, wherein: d1 is smaller than the length of the hollow cylinder (102), and D2 is larger than the length of the hollow cylinder (102).

5. The method for processing the shell of the intelligent device according to claim 1, wherein: the insert limiting structure comprises: the lower ends of the height limiting screws (13) with the upper ends connected with the bullet entering springboard penetrate through the male die cushion plate (14) and are embedded into a height limiting groove formed in the upper surface of the rear die fixing plate (18), the lower ends of the height limiting screws (13) are provided with radial outward flange parts (131), and when the bullet entering springboard and the male die cushion plate (14) are in a bonding state, a travel gap D1 is formed between the upper end face of the flange parts (131) and the lower surface of the male die cushion plate (14).

6. The method for processing the shell of the intelligent device according to claim 5, wherein: the height limiting screw (13) further comprises a body and a limiting sleeve (11) sleeved on the outer side of the body, the spring (12) is sleeved on the outer side of the limiting sleeve (11), the flange part (131) is arranged on the limiting sleeve (11), and the limiting sleeve (11) is in sliding fit with the male die cushion plate (14).

7. The method for processing the shell of the intelligent device according to claim 1, wherein: the male die limiting structure comprises: one end of the male die limiting sleeve (252) is provided with a limiting flange part (253) which is radially outwards, and when the male die cushion plate (14) and the male die plate (5) are in a fitting state, a stroke gap D2 is formed between the limiting flange part (253) and the inner wall of one end of the limiting groove.

8. The method for processing the shell of the intelligent device according to claim 7, wherein: the lower end of the male die limiting screw (251) is fixedly connected with the male die cushion plate (14), the limiting groove is formed in the upper surface of the male die plate (5), and when the male die cushion plate (14) and the male die plate (5) are in a fitting state, a gap between the lower surface of the limiting flange portion (253) and the inner wall of the lower end of the limiting groove is D2.

9. The method for processing the shell of the intelligent device according to claim 1, wherein: the ejector plate further comprises an upper ejector plate (16) and a lower ejector plate (17), the upper ejector plate (16) and the lower ejector plate (17) are fixedly connected through screws, and the ejector sleeve (7) is arranged on the upper ejector plate (16).

10. The method for processing the shell of the intelligent device according to claim 1, wherein: at least 2 middle brackets (20) are connected between the rear die fixing plate (18) and the male die cushion plate (14), and the middle brackets (20) penetrate through the ejector plate and are in sliding fit with the ejector plate through a middle bracket sleeve (21).