CN217293347U

CN217293347U - Helical gear demoulding mechanism

Info

Publication number: CN217293347U
Application number: CN202123087020.1U
Authority: CN
Inventors: 王建明; 陈春艺
Original assignee: Xiamen Jiansheng Technology Co ltd
Current assignee: Xiamen Jiansheng Technology Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-08-26
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a helical gear demoulding mechanism, its characterized in that: the device comprises a fixed die plate, a movable die plate, a fixed die insert, a movable die insert, a rotating ring, a limiting plate, a reset block and an ejector rod. The fixed die insert and the movable die insert are in mutual abutting joint, the rotating ring is installed at the bottom of the movable die insert, the reset block is fixed on the fixed die insert, the lower portion of the reset block is matched with a reset groove in the outer wall of the movable die insert, the limiting plate is fixed on the movable die plate and located on one side of the movable die insert groove, and the upper end of the ejector rod penetrates through the movable die plate and the movable die insert and then extends into the die cavity. Because the utility model discloses the movable mould mold insert can be rotatory at the movable mould board, and when the ejecting helical gear of ejector pin, the helical gear can drive the movable mould mold insert rotatory, and the rotatory helical gear in movable mould mold insert limit demolding has the advantage that production is stable, the product yields is high.

Description

Helical gear demoulding mechanism

Technical Field

The utility model relates to an injection mold especially relates to a helical gear demoulding mechanism.

Background

The plastic injection mold is a tool for producing plastic products and has wide application. In the injection molding of plastic products, because the plastic product is a bevel gear 10 (as shown in fig. 5), the teeth on the periphery are inclined to a certain angle, and the normal demolding mode cannot normally demold.

Disclosure of Invention

An object of the utility model is to provide a production is stable, the helical gear demoulding mechanism that the product yields is high.

In order to achieve the above object, the technical solution of the present invention is:

the utility model relates to a helical gear demoulding mechanism, which comprises a fixed mould plate, a movable mould plate, a fixed mould insert, a movable mould insert, a rotating ring, a limiting plate, a reset block and a mandril; the fixed die plate is abutted to the movable die plate, the fixed die insert is fixed on the fixed die plate, the movable die insert is rotatably sleeved in the insert groove of the movable die plate, the fixed die insert is abutted to the movable die insert, the rotating ring is installed between the bottom of the movable die insert and the bottom surface of the movable die insert groove and plays a role of a rotating bearing, the upper end of the resetting block is fixed on the outer wall of the fixed die insert, the lower portion of the resetting block is matched with the resetting groove in the outer wall of the movable die insert, the limiting plate is fixed on the movable die plate and located on one side of the movable die insert groove, the inner side of the limiting plate extends into the insert groove and is inserted into the limiting groove in the outer edge of the top surface of the movable die insert, the upper end of the ejector rod penetrates through the movable die plate and the movable die insert and then extends into the die cavity, and the inner wall of the die cavity is provided with an oblique tooth socket matched with a product.

The rotating ring is a circular ring-shaped member and is sleeved on a boss at the bottom of the movable mold insert.

The lower part of the reset block is provided with an inward downward inclined surface, one side of the reset groove of the movable mold insert is provided with an outward upward inclined surface, and the inclined surface of the reset groove is abutted to the inclined surface of the reset block.

The utility model also comprises a movable mould insert pressing block; the movable mold insert pressing block is fixed on the movable mold plate and located on one side of the insert groove, and the inner end of the movable mold insert pressing block extends to the movable mold plate insert groove and abuts against the top surface of the movable mold insert.

After the scheme of the adoption, because the utility model discloses fixed die plate, movable mould board, cover half mold insert, movable mould mold insert, rotatory ring, limiting plate, reset block, ejector pin, the movable mould mold insert can be rotatory at the movable mould board, and when the ejecting helical gear of ejector pin, the helical gear can drive the movable mould mold insert rotatory, and the rotatory helical gear limit demolding in movable mould mold insert limit has the advantage that production is stable, the product yields is high.

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a side view of the present invention;

fig. 4 is a top view of the present invention;

FIG. 5 is an isometric view of a fixed mold insert and a movable mold insert of the present invention;

fig. 6 is an exploded perspective view of the fixed mold insert and the movable mold insert of the present invention.

Detailed Description

As shown in fig. 1-6, the utility model relates to a helical gear demoulding mechanism, including fixed die plate 1, movable mould board 2, cover half mold insert 3, movable mould mold insert 4, rotatory ring 5, limiting plate 6, reset block 7, ejector pin 8, movable mould mold insert briquetting 9.

The fixed die plate 1 is abutted to the movable die plate 2, the fixed die insert 3 is fixed on the fixed die plate 1, the movable die insert 4 is rotatably sleeved in the insert groove 21 of the movable die plate 2, the fixed die insert 3 is abutted to the movable die insert 4, the rotating ring 5 is arranged between the bottom of the movable die insert 4 and the bottom surface of the insert groove 21 of the movable die plate 2 and plays a role of a rotating bearing, the upper end of the resetting block 7 is fixed on the outer wall of the fixed die insert 3, the lower part of the resetting block 7 is matched with the resetting groove 41 on the outer wall of the movable die insert 4, the limiting plate 6 is fixed on the movable die plate 2 and is positioned at one side of the insert groove 21 of the movable die plate 2, the inner side of the limiting plate 6 extends to the insert groove 21 and is inserted into the limiting groove 42 on the outer edge of the top surface of the movable die insert 4, the width of the limiting groove 42 is larger than that of the limiting plate 6 can move relative to the limiting groove 42, the movable die insert 9 is fixed on the movable die plate 2 and is positioned at one side of the insert groove 21, the inner end of the movable mold insert pressing block 9 extends to the insert groove 21 of the movable mold plate 2 and abuts against the top surface of the movable mold insert 4, the upper end of the ejector rod 8 penetrates through the movable mold plate 2 and the movable mold insert 4 and then extends into the cavity, and the inner wall of the cavity is provided with an inclined tooth socket matched with a product (a helical gear 10).

The rotating ring 5 is an annular member and is sleeved on the boss 43 at the bottom of the moving die insert 4, and the rotating ring 5 is made of brass material.

The lower part of the reset block 7 is provided with an inward downward inclined surface 71, one side of the reset 41 groove of the movable mold insert 4 is provided with an outward upward inclined surface 411, the inclined surface 411 of the reset groove 41 is abutted to the inclined surface 71 of the reset block 7, and the reset block 7 pushes the inclined surface 411 of the reset groove 41 through the inclined surface 71, so that the movable mold insert 4 rotates.

The utility model discloses a theory of operation:

1. when the mold is opened, the fixed mold plate 1 and the movable mold plate 2 are separated, the ejector rod 8 slowly ejects the bevel gear 10, and the movable mold insert 4 is driven by the bevel gear 10 to slowly rotate until the bevel gear 10 is completely separated from the movable mold insert 4.

2. When the die is closed, when the inclined surface 71 on the reset block 7 contacts the inclined surface 411 on the movable die insert 4, the movable die insert 4 starts to rotate and reset until the die closing of the movable die and the fixed die is completed.

The above description is only a preferred embodiment of the present invention, and therefore, the scope of the present invention should not be limited by the above description, and all equivalent changes and modifications made in the claims and the description of the present invention should be covered by the present invention.

Claims

1. A helical gear demoulding mechanism is characterized in that: the device comprises a fixed die plate, a movable die plate, a fixed die insert, a movable die insert, a rotating ring, a limiting plate, a reset block and an ejector rod;

the fixed die plate is abutted to the movable die plate, the fixed die insert is fixed on the fixed die plate, the movable die insert is rotatably sleeved in the insert groove of the movable die plate, the fixed die insert is abutted to the movable die insert, the rotating ring is installed between the bottom of the movable die insert and the bottom surface of the movable die insert groove and plays a role of a rotating bearing, the upper end of the resetting block is fixed on the outer wall of the fixed die insert, the lower portion of the resetting block is matched with the resetting groove in the outer wall of the movable die insert, the limiting plate is fixed on the movable die plate and located on one side of the movable die insert groove, the inner side of the limiting plate extends into the insert groove and is inserted into the limiting groove in the outer edge of the top surface of the movable die insert, the upper end of the ejector rod penetrates through the movable die plate and the movable die insert and then extends into the die cavity, and the inner wall of the die cavity is provided with an oblique tooth socket matched with a product.

2. The helical gear demolding mechanism according to claim 1, wherein: the rotating ring is an annular member and is sleeved on a boss at the bottom of the movable mold insert.

3. The helical gear demolding mechanism according to claim 1, wherein: the lower part of the reset block is provided with an inward downward inclined surface, one side of the reset groove of the movable mold insert is provided with an outward upward inclined surface, and the inclined surface of the reset groove is abutted to the inclined surface of the reset block.

4. The helical gear demolding mechanism according to claim 1, wherein: the device also comprises a movable mould insert pressing block; the movable mold insert pressing block is fixed on the movable mold plate and located on one side of the insert groove, and the inner end of the movable mold insert pressing block extends to the movable mold plate insert groove and abuts against the top surface of the movable mold insert.