CN218876109U

CN218876109U - Machining device with hollow cylinder part

Info

Publication number: CN218876109U
Application number: CN202222572393.6U
Authority: CN
Inventors: 李永
Original assignee: Kunshan Kersen Science and Technology Co Ltd
Current assignee: Kunshan Kersen Science and Technology Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-04-18
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses a processingequipment with hollow cylinder part, include: the part forming die comprises a female die plate provided with a female die core, a male die plate positioned below the female die plate and provided with a male die core, and a rear die fixing plate positioned below the male die plate, wherein a cavity for forming the part is formed between the female die core and the male die core, and the part comprises a body and a hollow cylinder formed on the body; at least 2 recesses have been seted up at the upper surface interval of public template, every the recess is embedded to install one and is ended the piece, every the central zone of ending a piece lower surface is connected with the return pin of a vertical setting, with public template sliding fit the lower extreme and the thimble board fixed connection of return pin, the return pin outside is located and is provided with a return pin spring between thimble board and the public template. The utility model discloses can accomplish the drawing of patterns and keep the complete cladding of membrane core to the part at the drawing of patterns in-process of the first stage in two stages at the drawing of patterns in-process of the part of moulding plastics that has hollow cylinder, improve the outward appearance precision and the yields of product.

Description

Machining device with hollow cylinder part

Technical Field

The utility model relates to a processingequipment with hollow cylinder part belongs to injection mold technical field.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes.

The ejector sleeve ejection is the most common structure in an injection mold, 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, and the ejector sleeve forms the bottom plane of the hollow column, and meanwhile, the ejector sleeve ejection assembly has the function of ejecting the hollow column. The ejector sleeve needle is fixed on the rear plate of the mold and cannot move due to mold opening and ejection of the mold, the ejector sleeve is fixed on the upper ejector plate and is fixed into an integrally-formed ejection assembly through the upper ejector plate and the lower ejector plate through screws, and the ejector rods apply acting force to the lower ejector plate to separate a product from the male mold core and the ejector sleeve needle.

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

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a processingequipment with hollow cylinder part, this processingequipment with hollow cylinder part can accomplish the drawing of patterns and keep the complete cladding of membrane core to the part at the drawing of patterns in-process of the first stage in two stages at the drawing of patterns in-process of the part of moulding plastics that has hollow cylinder, improves the outward appearance precision and the yields of product.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a tooling apparatus for injection molding a part having a hollow cylindrical body, comprising: the part comprises a female die plate provided with a female die core, a male die plate positioned below the female die plate and provided with a male die core, a rear die fixing plate positioned below the male die plate and 2 die pins arranged between the male die plate and the rear die fixing plate, wherein the lower surfaces of the 2 die pins are connected with the upper surface of the rear die fixing plate, an ejector plate capable of moving up and down is horizontally arranged between the 2 die pins arranged at intervals, a cavity for forming the part is formed between the female die core and the male die core, and the part comprises a body and a hollow cylinder formed on the body;

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

at least 2 grooves are formed in the upper surface of the male template at intervals, a stop block is embedded into each groove, a return pin which is vertically arranged is connected to the central area of the lower surface of each stop block, the lower end of the return pin is fixedly connected with the ejector plate in sliding fit with the male template, and a return pin spring is arranged on the outer side of the return pin and between the ejector plate and the male template.

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

1. in the scheme, the male die base plate is provided with the avoiding through hole for the back needle spring to pass through.

2. In the scheme, the lower surface of the male template is provided with a groove for embedding the upper end of the return spring.

3. 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 which are superposed are fixedly connected through screws, and the ejector sleeve is installed on the upper ejector plate.

4. In the scheme, at least 2 middle supporting parts are connected between the rear die fixing plate and the male die base plate, and the middle supporting parts penetrate through the ejector plate and are in sliding fit with the ejector plate through a middle supporting part sleeve.

5. In the above scheme, the male template is provided with the shutter matched with the opening on the female template and used for connecting the male template and the female template.

6. In the scheme, at least 2 guide pillars are connected between the male template and the female template, and the upper ends of the guide pillars, the lower ends of which are fixedly connected with the male template, are in sliding fit with the female template through a guide sleeve.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model discloses processing device with hollow cylinder part, it can divide two stages to accomplish the drawing of patterns and keep the complete cladding of membrane core to the part in the drawing of patterns in the first stage in the drawing of patterns in the process of the injection molding part that has hollow cylinder, avoids the hollow cylinder atress that leads to because the packing power between the hollow cylinder of part and the ejector pin is too big to shorten or the condition of distortion, improves the appearance precision and the yields of product; still, 2 at least recesses have been seted up at its public template's upper surface interval, every the recess is embedded to install one and ends a position piece, every end the central zone of position piece lower surface and be connected with the back needle of a vertical setting, with public template sliding fit the lower extreme and the thimble board fixed connection of back needle, the back needle outside is located and is provided with a back needle spring between thimble board and the public template to can realize the automatic re-setting of thimble board, improve continuous processing's efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the components of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a structural sectional view of the present invention;

FIG. 4 is a schematic structural diagram of a first mold opening process of the present invention;

fig. 5 is a schematic structural diagram of the second mold opening process of the present invention.

In the drawings above: 1. a master template; 2. a cavity insert; 3. a shutter; 4. a core insert; 5. a male template; 6. a male mold insert; 7. a ejector sleeve; 8. a sleeve ejector pin; 9. entering a bullet springboard; 12. a spring; 13. a guide screw; 14. a male mold backing plate; 15. a mould leg; 16. an upper ejector plate; 17. a lower ejector plate; 18. a rear mold fixing plate; 20. a middle support; 21. a middle toss sleeve; 22. back stitching; 23. a needle return spring; 24. a stop block; 26. a guide post; 27. a guide sleeve; 100. a part; 101. a body; 102. a hollow cylinder.

Detailed Description

The invention will be further described with reference to the following examples:

in the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore 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 expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

Example 1: a tooling apparatus for injection molding a part 100 having a hollow cylindrical body, comprising: the part 100 comprises a cavity plate 1 provided with a cavity 2, a male mold plate 5 positioned below the cavity plate 1 and provided with a male mold core 4, a rear mold fixing plate 18 positioned below the

male mold plate

5, and 2

mold feet

15,2 arranged between the male mold plate 5 and the rear mold fixing plate 18, wherein the lower surfaces of the mold feet 15 are connected with the upper surface of the rear mold fixing plate 18, an ejector pin plate capable of moving up and down is horizontally arranged between the 2 mold feet 15 arranged at intervals, a cavity for molding the part 100 is formed between the cavity 2 and the male mold core 4, and the part 100 comprises a body 101 and a hollow cylinder 102 molded on the body 101;

a male die backing plate 14 is arranged below the male die plate 5, edges of two sides of the lower surface of the male die backing plate 14 are respectively connected with the upper surfaces of 2 die feet 15, a bullet inlet springboard 9 is arranged between the male die backing plate 14 and the male die plate 5, a male die insert 6 corresponding to a hollow cylinder 102 is arranged on the bullet inlet springboard 9, the upper part of the male die insert 6 is embedded into a male die core 4, the upper part of an ejector sleeve 7 with the lower end connected with the ejector plate penetrates into a through hole formed in the center of the male die insert 6, the upper part of an ejector sleeve needle 8 with the lower end fixedly arranged on a rear die fixing plate 18 is correspondingly embedded into the ejector sleeve 7, so that a sub-cavity for forming the hollow cylinder 102 is formed between the male die insert 6 and the ejector sleeve 7 and the ejector sleeve needle 8, wherein the male die insert is used for forming the outer wall of the hollow cylinder, the ejector needle is used for forming the inner wall of the hollow cylinder, the ejector sleeve is used for forming the lower end surface of the hollow cylinder, the formed hollow cylinder is tightly arranged on the ejector sleeve needle, so that a formed part backing plate is not easy to cover the male die plate 14, and at least 2 spring plates are arranged between the male die plate 9;

at least 2 grooves are formed in the upper surface of the male template 5 at intervals, a stop block 24 is embedded into each groove, a return pin 22 which is vertically arranged is connected to the central area of the lower surface of each stop block 24, the lower end of the return pin 22 is fixedly connected with the ejector plate in sliding fit with the male template 5, and a return pin spring 23 is arranged outside the return pin 22 and between the ejector plate and the male template 5.

The male die backing plate 14 is provided with a position avoiding through hole for the return pin spring 23 to pass through; the lower surface of the male template 5 is provided with a groove for embedding the upper end of the back needle spring 23;

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 supporting parts 20 are connected between the rear die fixing plate 18 and the male die backing plate 14, and the middle supporting parts 20 penetrate through the ejector plate and are in sliding fit with the ejector plate through a middle supporting part sleeve 21.

Example 2: a tooling apparatus for injection molding a part 100 having a hollow cylindrical body, comprising: the part 100 comprises a cavity plate 1 provided with a cavity 2, a male mold plate 5 positioned below the cavity plate 1 and provided with a male mold core 4, a rear mold fixing plate 18 positioned below the

male mold plate

5, and 2

mold feet

at least 2 recesses have been seted up at the upper surface interval of public template 5, every the embedding is installed one in the recess and is stopped a position piece 24, every the central zone of stopping a position piece 24 lower surface is connected with the back needle 22 of a vertical setting, with public template 5 sliding fit the lower extreme and the thimble board fixed connection of back needle 22, the back needle 22 outside is located and is provided with a back needle spring 23 between thimble board and the public template 5.

The male template 5 is provided with a shutter 3 matched with the opening of the female template 1 and used for connecting the male template 5 and the female template 1;

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

the opposite surfaces of the male die backing plate 14 and the bullet-entering springboard 9 are respectively provided with a limit groove for the spring 12 to be embedded in;

a guide screw 13 corresponding to the spring 12 is arranged between the bullet-entering springboard 9 and the male die backing board 14, and the spring 12 is sleeved on the corresponding guide screw 13;

the upper end of the guide screw 13 is fixedly connected with the bullet-entering springboard 9, and the lower end of the guide screw is embedded into the male die backing board 14 and is in sliding fit with the male die backing board 14.

The working principle is as follows: in the die sinking process after the injection molding of the part is finished, the female die plate drags the male die plate to move upwards synchronously through the damping force of the shutter, so that the male die plate is separated from the male die base plate gradually, at the moment, the bullet entering springboard provided with the male die insert moves synchronously along with the male die plate under the action of the spring, the ejector pin arranged on the rear die fixing plate is kept still, the molded part is upwards far away from the ejector pin under the combined action of the male die insert and the male and female die core to realize relative movement for core pulling, and the condition that the stress of the hollow cylinder is shortened or the hollow cylinder is distorted and deformed in the die sinking process due to the overlarge packing force between the hollow cylinder of the part and the ejector pin can be avoided;

under the action of the height-limiting screw and the male die base plate, the bullet-entering springboard and the male die insert can only move upwards along with the male die base plate by a stroke D1 so that the part of the hollow cylinder is separated from the ejector pin, and 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 part stop moving, 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 driving of the ejector rod of the injection molding machine, so that the ejector sleeve in contact with the lower end face of the hollow cylinder pushes parts to upwards separate from the male die core, and the size precision of the appearance of the hollow cylinder after demolding is further improved.

When the processing device with the hollow cylinder part is adopted, the demoulding can be finished in two stages in the demoulding process of the injection moulding part with the hollow cylinder, and the complete coating of the film core on the part is kept in the demoulding process in the first stage, so that the condition that the stress of the hollow cylinder is shortened or the hollow cylinder is distorted and deformed due to the overlarge packing force between the hollow cylinder and the ejector pin of the part is avoided, and the appearance precision and the yield of the product are improved;

still, 2 at least recesses have been seted up at its public template's upper surface interval, every the recess is embedded to install one and ends a position piece, every end the central zone of position piece lower surface and be connected with the back needle of a vertical setting, with public template sliding fit the lower extreme and the thimble board fixed connection of back needle, the back needle outside is located and is provided with a back needle spring between thimble board and the public template to can realize the automatic re-setting of thimble board, improve continuous processing's efficiency.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A machining device with a hollow cylindrical part for injection moulding of the part (100), comprising: install cavity plate (1) of cavity benevolence (2), be located cavity 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 the respective lower surface of mould foot (15) and the upper surface connection of back mould fixed plate (18), the level is provided with an ejector plate that can reciprocate between 2 mould feet (15) that the interval set up, form between cavity benevolence (2) and public mould benevolence (4) and be used for the shaping the die cavity of part (100), its characterized in that: the part (100) comprises a body (101) and a hollow cylinder (102) formed on the body (101);

a male die base plate (14) is arranged below the male die plate (5), the edges of two sides of the lower surface of the male die base plate (14) are respectively connected with the upper surfaces of 2 die feet (15), a bullet entering springboard (9) is arranged between the male die base plate (14) and the male die plate (5), a male die insert (6) corresponding to the hollow cylinder (102) is installed on the bullet entering springboard (9), the upper part of the male die insert (6) is embedded into a male die core (4), the upper part of an ejector sleeve (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 an ejector sleeve needle (8) with the lower end fixedly installed on a rear die fixing plate (18) is correspondingly embedded into the ejector sleeve (7), so that a sub-type cavity for molding the hollow cylinder (102) is formed among the male die insert (6), the ejector sleeve (7) and the ejector sleeve needle (8), and at least 2 springs (12) are arranged between the male die base plate (14) and the springboard (9) in a compression state;

at least 2 recesses have been seted up at the upper surface interval of public template (5), every the embedding is installed one in the recess and is stopped a piece (24), every the central zone of ending a piece (24) lower surface is connected with back needle (22) of a vertical setting, with public template (5) sliding fit the lower extreme and the thimble board fixed connection of back needle (22), be provided with a back needle spring (23) outside and lie in between thimble board and public template (5).

2. The machining device with the hollow cylindrical part as claimed in claim 1, wherein: and the male die base plate (14) is provided with a position avoiding through hole for the back pin spring (23) to pass through.

3. The machining device with the hollow cylindrical part as claimed in claim 1, wherein: the lower surface of the male template (5) is provided with a groove for embedding the upper end of the back pin spring (23).

4. The machining device with the hollow cylindrical part as claimed in 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 overlapped and fixedly connected through screws, and the ejector sleeve (7) is installed on the upper ejector plate (16).

5. The machining device with the hollow cylinder part as claimed in claim 1, wherein: at least 2 middle supporting parts (20) are connected between the rear die fixing plate (18) and the male die base plate (14), and the middle supporting parts (20) penetrate through the ejector plate and are in sliding fit with the ejector plate through a middle supporting part sleeve (21).

6. The machining device with the hollow cylindrical part as claimed in claim 1, wherein: and the male template (5) is provided with a shutter (3) matched with the opening hole in the female template (1) and used for connecting the male template (5) and the female template (1).

7. The machining device with the hollow cylindrical part as claimed in claim 1, wherein: at least 2 guide pillars (26) are connected between the male template (5) and the female template (1), and the upper ends of the guide pillars (26) with the lower ends fixedly connected with the male template (5) are in sliding fit with the female template (1) through a guide sleeve (27).