CN115609849A

CN115609849A - High-precision injection mold for embedded part

Info

Publication number: CN115609849A
Application number: CN202211314494.1A
Authority: CN
Inventors: 周猛
Original assignee: Freewon China Co Ltd
Current assignee: Freewon China Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-17

Abstract

The invention discloses a high-precision injection mold for an embedded part, which comprises a movable seat and a mold seat, wherein a gland is arranged on the upper side of the movable seat, and an injection port is formed in the middle of the gland; an upper die is arranged on the inner side of the movable seat, a female die is arranged on the lower side of the upper die, and an injection molding runner is arranged on the upper part of the upper die; the lower die is arranged on the inner side of the upper part of the die base and comprises an insert pin sliding block and a male die, and a push block is arranged on the lower side of the upper die and used for controlling the insert pin sliding block to move; the female die and the male die are both provided with injection molding cavities, a workpiece is placed in the injection molding cavity on the upper side of the male die, and a PIN needle penetrates through the middle of the workpiece; the spring insert PIN is arranged on the insert PIN sliding block, the sliding clamping blocks are arranged on two sides of the male die, the spring insert PIN is used for positioning the PIN PIN, and the sliding clamping blocks are used for fixing a workpiece.

Description

Bury high-accuracy injection mold of piece

Technical Field

The invention is applied to the background of an injection mold and is named as a high-precision injection mold for an embedded part.

Background

The insert injection molding is a molding method which is characterized in that an insert made of different materials is fixed in a proper position in a mold in advance, then a molten material such as plastic is injected, and after the mold is opened, the insert is wrapped and embedded in a product by the cooled and solidified plastic to form an integrated product.

When a product related to the PIN needle is subjected to injection molding, the PIN needle needs to be positioned, the tolerance precision of the PIN is +/-0.03 mm, and the tolerance +/-0.01 mm error can cause the insertion of a PIN cup opening of the product, the positioning requirement on the PIN needle is extremely high, so that the yield is only 75%, in the prior art, the positioning precision of the injection molding PIN needle is low, the yield is unstable, and the produced product is influenced in use.

Therefore, it is necessary to provide a high-precision injection mold for an embedded part, which can improve the positioning precision of the embedded part.

Disclosure of Invention

The invention aims to provide a high-precision injection mold for an embedded part, which aims to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: a high-precision injection mold for an embedded part comprises a movable seat and a mold seat, wherein a gland is arranged on the upper side of the movable seat, and an injection molding opening is formed in the middle of the gland; an upper die is arranged on the inner side of the movable seat, a female die is arranged on the lower side of the upper die, an injection runner is arranged on the upper portion of the upper die, and the injection runner is used for subdividing materials injected from an injection port and sending the subdivided materials to the female die; the lower die is arranged on the inner side of the upper part of the die base and comprises an insert pin sliding block and a male die, and a push block is arranged on the lower side of the upper die and used for controlling the insert pin sliding block to move; the female die and the male die are both provided with injection molding cavities, a workpiece is placed in the injection molding cavity on the upper side of the male die, and a PIN needle penetrates through the middle of the workpiece; the PIN inserting slider is provided with a spring inserting PIN, the two sides of the male die are provided with sliding clamping blocks, the spring inserting PIN is used for positioning a PIN, and the sliding clamping blocks are used for fixing a workpiece.

In one embodiment, a positioning rod is fixed on the lower side of the gland, the positioning rod penetrates through the movable seat, the positioning rod is connected with the movable seat in a sliding mode, and a positioning hole matched with the positioning rod is formed in the die seat.

In one embodiment, the injection port communicates with an injection runner, which communicates with an injection mold cavity.

In one embodiment, a shock absorption seat is arranged on the lower side of the lower die, a mounting cavity for accommodating the shock absorption seat is formed in the die seat, the male die is located in the middle of the shock absorption seat, and the insert pin sliding blocks are arranged on two sides of the male die.

In one embodiment, the insert pin sliding block is connected with the shock absorption seat in a sliding mode, contact inclined planes which are matched with each other are arranged on the push block and the insert pin sliding block, and a positioning pin corresponding to the insert pin sliding block is arranged on the lower side of the upper die.

In one embodiment, the shock absorption seat is provided with an ejector pin and a guide rod on the upper side, the ejector pin and the guide rod penetrate through the male die, and the ejector pin is arranged corresponding to the workpiece.

In one embodiment, the guide rod penetrates through the sliding clamping block, a guide inclined surface is arranged on one side of the guide rod, the sliding clamping block is in sliding contact with the guide rod, and a compression spring is arranged on one side of the sliding clamping block.

In one embodiment, the male die is connected with the shock absorption seat in a sliding mode, and a buffer spring is arranged between the bottom of the male die and the shock absorption seat.

In one embodiment, the injection mold comprises the following working steps:

step 1: the workpiece is placed into the male die by the manipulator jig, the male die is pressed downwards in the manipulator jig placing process, and the sliding clamping block is pulled to be opened through the guide rod, so that the workpiece is clamped;

step 2: the mechanical arm jig is moved away, the gland drives the movable seat to press downwards, the movable seat is contacted with the die seat, the female die and the male die complete die assembly, the push block pushes the PIN embedding slide block to be close to the male die, and the spring insert PIN is abutted against the PIN PIN, so that the positioning function is realized;

and step 3: injecting a molten material into the injection port, subdividing the molten material through an injection runner, finally sending the subdivided material into an injection mold cavity, cooling and forming the material, and moving the gland up to separate the female mold from the male mold;

and 4, step 4: the manipulator tool pushes down the male die, the sliding clamping block is opened, and the manipulator tool takes out the formed product to complete injection molding.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the plurality of groups of spring insert PINs are arranged, and the spring insert PINs are propped against the tail part and the cup mouth of the PIN needle to independently position each PIN needle, so that glue overflow and offset of the cup mouth of the PIN needle and insertion injury to the inner wall are prevented, the positioning precision of the PIN needle in injection molding is improved, and the yield is improved.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

In the drawings:

FIG. 1 is an exploded schematic view of the overall assembled three-dimensional structure of the present invention;

FIG. 2 is an exploded view of the three-dimensional structure of the upper and lower dies of the present invention;

FIG. 3 is a schematic three-dimensional structure of an upper mold of the present invention;

FIG. 4 is a partial schematic view of the three-dimensional structure of the lower die of the present invention;

FIG. 5 is a partial schematic view of the three-dimensional structure of the male and female molds of the present invention when they are closed;

FIG. 6 is a partial schematic view of the three-dimensional structure of the male mold of the present invention;

FIG. 7 is a schematic view of the spring inlay pin of the present invention;

FIG. 8 is a schematic diagram of the three-dimensional structure of the PIN of the present invention;

in the figure: 1. a gland; 11. injection molding a port; 2. positioning a rod; 3. a movable seat; 301. injection molding a runner; 302. pushing a block; 31. an upper die; 4. a lower die; 41. a female die; 42. a needle inserting slider; 421. spring insert pins; 43. a male die; 431. a thimble; 432. a guide bar; 433. a compression spring; 434. a sliding clamping block; 5. a shock absorbing seat; 6. a mold base; 7. a cooling duct; 8. a workpiece; 9. and a PIN needle.

Detailed Description

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1-8, the present invention provides the following technical solutions: a high-precision injection mold for an embedded part comprises a movable seat 3 and a mold seat 6, wherein a gland 1 is arranged on the upper side of the movable seat 3 in a sliding mode, an injection port 11 is formed in the middle of the gland 1, a heating rod is embedded in the gland 1 and used for keeping the temperature of a material, and the fluidity of the molten material is ensured, a positioning rod 2 is fixed on the lower side of the gland 1, the positioning rod 2 penetrates through the movable seat 3, the positioning rod 2 is in sliding connection with the movable seat 3, a positioning hole matched with the positioning rod 2 is formed in the mold seat 6, and a limiting ring is arranged on the positioning rod 2 to ensure that the movable seat 3 slides on the positioning rod 2 but cannot slip;

as shown in fig. 1, 2 and 3, an upper mold 31 is detachably connected to the inner side of the movable seat 3, a plurality of sets of female molds 41 are fixedly arranged on the lower side of the upper mold 31, the female molds 41 can be arranged in a plurality of sets as required, the upper mold 31 is used for assembling the plurality of sets of female molds 41, an injection runner 301 is arranged on the upper portion of the upper mold 31, the injection port 11 is communicated with the injection runner 301, and the injection runner 301 is used for evenly subdividing the material injected from the injection port 11 and sending the subdivided material to the female molds 41;

as shown in fig. 2 and 4, a lower die 4 is arranged on the inner side of the upper part of a die base 6, a cooling pipeline 7 is arranged on the inner side of the die base 6, a shock absorption base 5 is arranged on the lower side of the lower die 4, an installation cavity for accommodating the shock absorption base 5 is formed in the die base 6, the lower die 4 comprises a PIN embedding slider 42 and a male die 43, injection molding cavities are formed in a female die 41 and the male die 43, an injection molding runner 301 is communicated with the injection molding cavities, a workpiece 8 is placed in the injection molding cavity on the upper side of the male die 43, a spring pressing PIN is arranged on the female die 41 and used for pressing and positioning the workpiece 8 when die assembly is carried out, so that position deviation is avoided, and a PIN 9 penetrates through the middle part of the workpiece 8;

as shown in fig. 2, the male die 43 is located in the middle of the upper side of the damper base 5, a plurality of sets of male dies 43 are provided, the damper base 5 is used for installing a plurality of sets of male dies 43, the male dies 43 are vertically and slidably connected with the damper base 5, a buffer spring is provided between the bottom of the male dies 43 and the damper base 5, the insert PIN sliders 42 are provided on two sides of the male dies 43, the insert PIN sliders 42 are slidably connected with the damper base 5, and the lower side of the upper die 31 is provided with the push block 302;

sliding clamping blocks 434 are arranged on two sides of the male die 43 in a sliding mode, the sliding clamping blocks 434 are used for fixing the workpiece 8, a pressing spring 433 is arranged on one side of each sliding clamping block 434, and each pressing spring 433 is used for pushing each sliding clamping block 434 to clamp;

an ejector pin 431 and a guide rod 432 are fixedly arranged on the upper side of the shock absorption seat 5, the ejector pin 431 and the guide rod 432 penetrate through the male die 43, the ejector pin 431 corresponds to the workpiece 8 and is used for ejecting the workpiece 8 after machining is finished, the guide rod 432 penetrates through the sliding clamping block 434, as shown in fig. 4, a guide inclined surface is arranged on one side, deviating from the male die 43, of the guide rod 432, the sliding clamping block 434 is in sliding contact with the guide rod 432, and when the sliding clamping block 434 vertically slides relative to the guide rod 432, the guide inclined surface can pull the sliding clamping block 434 to horizontally deviate, so that the sliding clamping block 434 is opened and closed.

The working steps are as follows:

the workpiece 8 is placed into the male die 43 by the manipulator jig, the male die 43 is pressed downwards in the manipulator jig placing process, the sliding clamping block 434 is pulled to open through the guide rod 432, the manipulator jig is lifted and then moved away, and the workpiece 8 is clamped under the action of the pressing spring 433;

the gland 1 drives the movable seat 3 to press downwards, the movable seat 3 is in contact with the die base 6, the female die 41 and the male die 43 complete die assembly, the push block 302 pushes the insert PIN sliding block 42 to be close to the male die 43, the spring insert PIN 421 on the insert PIN sliding block 42 is abutted against the PIN PIN 9, the tail of one end of the spring insert PIN 421 is in a conical shape, one end of the PIN PIN 9 is provided with a cup mouth, the tail and the cup mouth of the PIN PIN 9 are abutted by the spring insert PIN 421, glue overflow and offset of the cup mouth of the PIN PIN 9 and insertion damage to the inner wall are prevented, the force value of the spring insert PIN 421 is 0.3N-40N, offset after injection molding pressure is prevented from influencing the position and size, the positioning function is realized, and meanwhile, the damage to the terminal of the PIN PIN 9 is avoided;

injecting a molten material into the injection port 11, subdividing the molten material through the injection runner 301, finally sending the subdivided material into an injection mold cavity, wrapping the workpiece 8 and the PIN needle 9, cooling and forming, and moving the gland 1 upwards to separate the female mold 41 from the male mold 43;

the manipulator jig presses the male die 43 downwards, the sliding clamping block 434 is opened, the ejector pins 431 eject the finished product, and the manipulator jig takes out the molded product to complete injection molding.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; may be directly connected, may be internal to the two elements or may be in an interactive relationship with the two elements. The meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

The above detailed description is given to the high-precision injection mold for the embedded part provided in the embodiments of the present application, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. The utility model provides a high-accuracy injection mold of embedded part which characterized in that: the injection molding device comprises a movable seat (3) and a mold seat (6), wherein a gland (1) is arranged on the upper side of the movable seat (3), and an injection molding opening (11) is formed in the middle of the gland (1);

an upper die (31) is arranged on the inner side of the movable seat (3), a female die (41) is arranged on the lower side of the upper die (31), an injection runner (301) is formed in the upper portion of the upper die (31), and the injection runner (301) is used for subdividing a material injected from an injection port (11) and sending the subdivided material to the female die (41);

the inner side of the upper part of the die seat (6) is provided with a lower die (4), the lower die (4) comprises an insert pin sliding block (42) and a male die (43), the lower side of the upper die (31) is provided with a push block (302), and the push block (302) is used for controlling the insert pin sliding block (42) to move;

injection molding cavities are formed in the female die (41) and the male die (43), a workpiece (8) is placed in the injection molding cavity on the upper side of the male die (43), and a PIN needle (9) penetrates through the middle of the workpiece (8);

inlay needle slider (42) and be equipped with spring and inlay needle (421), public mould (43) both sides are equipped with slip clamp splice (434), spring is inlayed needle (421) and is used for fixing a position PIN needle (9), slip clamp splice (434) are used for fixed work piece (8).

2. The high-precision injection mold for the embedded part according to claim 1, wherein: the gland (1) downside is fixed with locating lever (2), locating lever (2) run through sliding seat (3), sliding connection between locating lever (2) and sliding seat (3), set up the locating hole with locating lever (2) adaptation on mould seat (6).

3. The high-precision injection mold for the embedded part according to claim 1, wherein: the injection molding port (11) is communicated with an injection molding runner (301), and the injection molding runner (301) is communicated with an injection molding cavity.

4. The high-precision injection mold for the embedded part according to claim 1, wherein: lower mould (4) downside is equipped with shock attenuation seat (5), set up the installation cavity that holds shock attenuation seat (5) on mould seat (6), public mould (43) are located shock attenuation seat (5) middle part, inlay needle slider (42) and set up in public mould (43) both sides.

5. The high-precision injection mold for the embedded part according to claim 4, wherein: inlay sliding connection between needle slider (42) and cushion socket (5), be equipped with the contact inclined plane of mutual adaptation on ejector pad (302) and the needle slider (42) of inlaying, go up mould (31) downside and be equipped with the locating pin that corresponds with inlaying needle slider (42).

6. The high-precision injection mold for the embedded part according to claim 4, wherein: an ejector pin (431) and a guide rod (432) are arranged on the upper side of the shock absorption seat (5), the ejector pin (431) and the guide rod (432) penetrate through the male die (43), and the ejector pin (431) is arranged corresponding to the workpiece (8).

7. The high-precision injection mold for the embedded part according to claim 6, wherein: guide bar (432) run through slip clamp splice (434), guide bar (432) one side is equipped with the direction inclined plane, slip clamp splice (434) and guide bar (432) sliding contact, slip clamp splice (434) one side is equipped with pressure spring (433).

8. The high-precision injection mold for the embedded part according to claim 7, wherein: sliding connection between public mould (43) and shock attenuation seat (5), be equipped with buffer spring between public mould (43) bottom and shock attenuation seat (5).

9. The high-precision injection mold for the embedded part according to claim 7, wherein: the injection mold comprises the following working steps:

step 1: the workpiece (8) is placed into the male die (43) by the manipulator jig, the male die (43) is pressed down in the manipulator jig placing process, and the sliding clamping block (434) is pulled to be opened through the guide rod (432), so that the workpiece (8) is clamped;

step 2: the manipulator jig is moved away, the gland (1) drives the movable seat (3) to press downwards, the movable seat (3) is contacted with the die seat (6), the female die (41) and the male die (43) complete die assembly, the push block (302) pushes the insert sliding block (42) to be close to the male die (43), and the spring insert (421) abuts against the PIN (9) to achieve the positioning function;

and step 3: injecting a molten material into the injection port, subdividing the material through an injection runner (301), finally sending the material into an injection mold cavity, cooling and forming, moving the gland (1) upwards to separate the female mold (41) from the male mold (43);

and 4, step 4: the manipulator tool pushes down the male die (43), the sliding clamping block (434) is opened, and the manipulator tool takes out a formed product to complete injection molding.