CN216423156U

CN216423156U - Slide three-time core-pulling structure of precision plastic mold

Info

Publication number: CN216423156U
Application number: CN202122882911.XU
Authority: CN
Inventors: 黄强; 关永桑
Original assignee: Outang Technology Shenzhen Co ltd
Current assignee: Outang Technology Shenzhen Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-05-03
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a precise plastic mould slide three-time core pulling structure, which comprises a first shovel machine and a second shovel machine which are in sliding fit, wherein two sides of the second shovel machine are provided with a first wedge slide, a second wedge slide is arranged in the first wedge slide, a third wedge slide is arranged in the second wedge slide, and a mold insert for forming a column inner hole is arranged on the third wedge slide; one side that second slide wedge was expert at position and third slide wedge is expert at position is equipped with first T type joint portion and second T type joint portion, and the front end both sides of first shovel machine set up T type groove, and first T type joint portion and second T type joint portion all block and establish in T type inslot, have the clearance between the protruding inner wall of first T type joint portion and the notch inner wall in T type groove. The utility model discloses the mold opening process is taken out earlier and is assisted the characteristic structure of second slide wedge capable position simultaneously and postpones breaking away from the dark position of bone of product and assisting the interior shrink of first slide wedge capable position and postpone, satisfies the smooth drawing of patterns of the arc product that the inner wall has interior hole post and dark muscle position, avoids the mucous membrane.

Description

Slide three-time core-pulling structure of precision plastic mold

Technical Field

The utility model relates to a technical field of mould structure of loosing core, in particular to accurate plastic mould is capable position cubic structure of loosing core.

Background

In a plastic mold, a product with deep rib positions and buckling positions is often encountered, such as an arc-shaped product 900 shown in fig. 1, the inner walls of both sides of which have inner hole columns 900a and deep rib positions 900b, the inner side space is small, the structure is complex, and when a slide is withdrawn, the product is easily adhered to a feature structure on the slide, and the mold cannot be smoothly ejected.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model aims at providing an accurate plastic mould is capable position cubic structure of loosing core aims at solving the easy glutinous problem of mould of arc product that has dark muscle position.

In order to achieve the purpose, the utility model provides a precise plastic mold slide three-time core pulling structure, which comprises a first shovel machine and a second shovel machine which are matched in a sliding way along the core pulling direction;

two sides of the second shovel are provided with first inclined wedge traveling positions in sliding fit with the second shovel, and the second shovel can drive the first inclined wedge traveling positions to move along the mold stripping direction when moving in the core pulling direction;

a second wedge slide position which is arranged in a sliding manner along the mold stripping direction is arranged in the first wedge slide position, a third wedge slide position which is arranged in a sliding manner along the mold stripping direction is arranged in the second wedge slide position, and an insert used for forming a column position inner hole is arranged on the third wedge slide position;

one side that second slide wedge was gone position and third slide wedge is gone the position is equipped with first T type joint portion and second T type joint portion respectively, the front end both sides of first shovel machine set up T type groove, first T type joint portion and second T type joint portion all block and establish T type inslot, just the protruding inner wall of first T type joint portion with movable gap has between the notch inner wall in T type groove.

Optionally, the rear end of the second shovel is provided with an extension portion, the rear end of the first shovel is provided with a shovel base, and the shovel base is slidably arranged on the extension portion;

the end of the extending part is provided with a stop block, and a distance for the shovel base to move is arranged between the stop block and the shovel base.

Optionally, the front end of the second shovel machine has an avoidance slot, and the front end of the first shovel machine is inserted into the avoidance slot.

Optionally, the second cam slide has a movable cavity therein, and an accommodating cavity communicated with the movable cavity, a spring is arranged in the accommodating cavity, the third cam slide is arranged in the movable cavity, and one end of the spring is pressed on the third cam slide.

Optionally, the shovel further comprises a base, wherein a core-pulling oil cylinder is arranged on the base, and the core-pulling oil cylinder is connected with the first shovel through a guide column.

Optionally, the base is provided with an ejection cylinder and an ejector plate which is slidably arranged on the base, the ejector plate is provided with a plurality of ejector pins, and the ejector pins penetrate through the first shovel machine and the second shovel machine and then are ejected onto the inner wall of the product.

The utility model provides a slide cubic structure of loosing core, including along the first shovel machine and the second shovel machine of the direction sliding fit of loosing core to be equipped with rather than the first slide wedge slide of sliding fit in the both sides of second shovel machine, be equipped with the second slide wedge slide that slides and set up along the demolding direction in first slide wedge slide, be equipped with the third slide wedge slide that slides and set up along the demolding direction in second slide wedge slide, and be equipped with the mold insert that is used for forming the post position hole on the third slide wedge slide; one side in second slide wedge slide position and third slide wedge slide position is equipped with first T type joint portion and second T type joint portion respectively, sets up T type groove in the front end both sides of first shovel machine to all block first T type joint portion and second T type joint portion and establish in T type inslot, have the free gap between the protruding inner wall of first T type joint portion and the notch inner wall in T type groove.

When the mold is removed, the first shovel drives the third wedge to move, and drives the insert to be drawn out from the inner hole of the column position; after the first shovel machine drives the third wedge slide to walk through a movable gap between the second wedge slide and the first shovel machine, the first shovel machine simultaneously drives the second wedge slide to act together, so that the characteristic structure of the second wedge slide is separated from the deep bone position of the product; and finally, the first shovel machine and the second shovel machine act together to drive the first wedge to retract and yield in the slide position, so that the slide position and the insert are completely withdrawn.

Compared with the prior art, the utility model discloses can be at the mold opening process first twitch the mold insert and assist the characteristic structure of second slide wedge capable position simultaneously and postpone breaking away from the dark position of bone of product to and supplementary first slide wedge capable position retraction delay, satisfy the smooth drawing of patterns of the arc product that the inner wall has interior hole post and dark muscle position, avoid the mucous membrane.

And the force of the slide wedge is balanced, so that the slide wedge is prevented from being rubbed and burnt due to unbalanced force of the slide motion.

Drawings

FIG. 1 is a schematic structural diagram of an arc-shaped product with an inner wall provided with transverse inner hole columns and vertical deep bone positions;

FIG. 2 is a top view of an embodiment of the precision plastic mold of the present invention;

FIG. 3 is a schematic perspective view of an embodiment of the precision plastic mold of the present invention;

fig. 4 is a schematic structural view of a slide triple-core-pulling structure in an embodiment of the precision plastic mold of the present invention;

fig. 5 is an exploded schematic view of a slide triple core-pulling structure in an embodiment of the precision plastic mold of the present invention;

FIG. 6 is a schematic structural diagram of a first shovel machine according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a third slide wedge of an embodiment of the precision plastic mold of the present invention;

FIG. 8 is a schematic structural diagram of a second slide wedge of an embodiment of the precision plastic mold of the present invention;

fig. 9 is a cross-sectional view of a slide triple core-pulling structure in an embodiment of the precision plastic mold of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

FIG. 11 is a schematic diagram of the action of the slide triple core pulling structure during the first core pulling;

FIG. 12 is a schematic diagram of the action of the slide triple-core-pulling structure during the second core-pulling;

FIG. 13 is a schematic diagram of the action of the slide triple core pulling structure during the third core pulling;

FIG. 14 is a top view of another embodiment of the precision plastic mold of the present invention;

fig. 15 is a schematic perspective view of another embodiment of the precision plastic mold of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 2-3 in the specification, an embodiment of the present invention provides a precision plastic mold, which includes a slide three-time core-pulling structure and a base 600, wherein a core-pulling cylinder 700 is disposed on the base 600, and the core-pulling cylinder 700 is connected to the slide three-time core-pulling structure through two guide posts 710 for driving the slide three-time core-pulling structure to perform core pulling.

Specifically, as shown in fig. 4 to 10, in the present embodiment, the slide triple-pulling structure includes a first shovel machine 100 and a second shovel machine 200 that are slidably fitted in the pulling direction, a rear end of the second shovel machine 200 has an extension portion, a rear end of the first shovel machine 100 is provided with a shovel base 110, and the shovel base 110 is slidably disposed on the extension portion. Two stop blocks 210 are arranged at the end parts of the extending parts, and a distance for the shovel base 110 to move is reserved between the two stop blocks 210 and the shovel base 110. The shovel base 110 is connected to the core cylinder 700 through two guide posts 710.

The front end of the second shovel 200 has an escape slot into which the front end of the first shovel 100 is inserted. And the two sides of the second shovel machine 200 are provided with first inclined wedge rows 500 in sliding fit with the second shovel machine 200, and the second shovel machine 200 can drive the first inclined wedge rows 500 on the two sides to retract into a mold when acting along the core pulling direction. A second cam row 400 slidably disposed along the mold stripping direction is provided in the first cam row 500, a third cam row 300 slidably disposed along the mold stripping direction is provided in the second cam row 400, and an insert 310 for forming a column inner hole is provided on the third cam row 300.

First T-shaped clamping portions 400a and second T-shaped clamping portions 300a are arranged on one sides of the second inclined wedge row 400 and the third inclined wedge row 300 respectively, T-shaped grooves 100a are formed in two sides of the front end of the first shovel machine 100, and the first T-shaped clamping portions 400a and the second T-shaped clamping portions 300a are inserted into the avoiding grooves of the second shovel machine 200 and clamped in the T-shaped grooves 100 a.

As shown in fig. 10, in the mold-closed state, the inner convex wall 300b of the second T-shaped clamping portion 300a is attached to the inner groove wall 100b of the T-shaped groove 100a, and a movable gap h is formed between the inner convex wall 400b of the first T-shaped clamping portion 400a and the inner groove wall 100b of the T-shaped groove 100 a.

The utility model discloses a cubic process of loosing core as follows:

as shown in fig. 11, during the first core pulling, the core pulling cylinder 700 drives the first shovel 100 to move in the core pulling direction, so as to drive the two third tapered wedge traveling positions 300 to retract into the avoiding groove of the second shovel 200, and further drive the end portion of the insert 310 to be drawn out from the inner bore column 900a, until the first shovel 100 drives the third tapered wedge traveling position 500 to complete the movable gap h between the second tapered wedge traveling position 400 and the first shovel 100.

As shown in fig. 12, during the second core pulling, the first shovel machine 100 moves in the core pulling direction to continue to move, and drives the second cam slide 400 and the third cam slide 300 to move together until the first shovel machine 100 has moved away the distance between the stopper 210 and the shovel base 110, so that the feature structure of the second cam slide 400 is separated from the deep bone position of the product, and the end of the insert 310 is completely separated from the inner hole column 900a of the product.

As shown in fig. 13, during the third core pulling, the first shovel machine 100 drives the second shovel machine 200 to operate, the second shovel machine 200 drives the first wedge traveling positions 500 on both sides to retract and yield, and the first shovel machine 100 drives the second wedge traveling positions 400 and the second wedge traveling positions 400 to further move towards the yielding grooves of the second shovel machine 200, thereby completing the traveling position core pulling.

Compared with the prior art, the utility model discloses can be at the mold opening process take out earlier mold insert 310 and assist the characteristic structure of second slide wedge slide 400 simultaneously and postpone breaking away from the dark position of bone of product to and supplementary first slide wedge slide 500 internal contraction postpones, satisfies the smooth drawing of patterns of the arc product that the inner wall has interior hole post 900a and dark muscle position, avoids the mucous membrane.

Alternatively, as shown in fig. 10, in the present embodiment, the second cam position 400 has a movable chamber and a housing chamber 400c communicating with the movable chamber, and a spring 410 is provided in the housing chamber 400c, and the third cam position 300 is provided in the movable chamber. When the die is closed, the spring 410 is pressed in the accommodating cavity 400c by the third inclined wedge position 300; after the first shovel 100 is withdrawn from the third slide 300, a reaction force is applied to the third slide 300 by the spring 410, such that the insert 310 remains retracted within the second slide 400.

Example 2

As shown in fig. 14 to 15, in addition to the above embodiment 1, the base 600 is provided with the ejection cylinder 800 and the ejector pin 820 plate 810, the ejector pin 820 plate 810 is provided with a plurality of ejector pins 820, and each ejector pin 820 penetrates through the first shovel 100 and the second shovel 200 and then abuts against the inner wall of the product. Therefore, after the core pulling cylinder 700 drives the slide three-time core pulling structure to pull the core, the ejector cylinder 800 can drive the ejector pin 820 plate 810 to act, so that the ejector pin 820 is driven to eject the product.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A slide three-time core pulling structure of a precise plastic mold is characterized by comprising a first shovel machine and a second shovel machine which are in sliding fit with each other along a core pulling direction;

2. The precise plastic mold slide triple core pulling structure as claimed in claim 1, wherein the second shovel has an extension at the rear end, the first shovel has a shovel base at the rear end, and the shovel base is slidably disposed on the extension;

3. The precise plastic mold slide three-time core pulling structure as claimed in claim 2, wherein the front end of the second shovel is provided with an avoiding groove, and the front end of the first shovel is inserted into the avoiding groove.

4. The three-time core pulling structure for the precision plastic mold slide according to claim 3, wherein the second wedge slide has a movable cavity therein and an accommodating cavity communicated with the movable cavity, a spring is disposed in the accommodating cavity, the third wedge slide is disposed in the movable cavity, and one end of the spring is pressed against the third wedge slide.

5. The precise plastic mold slide three-time core pulling structure according to any one of claims 1 to 4, further comprising a base, wherein a core pulling oil cylinder is arranged on the base, and the core pulling oil cylinder is connected with the first shovel machine through a guide post.

6. The precise plastic mold slide three-time core pulling structure as claimed in claim 5, wherein the base is provided with an ejection cylinder and an ejector plate slidably arranged on the base, the ejector plate is provided with a plurality of ejector pins, and the ejector pins penetrate through the first shovel and the second shovel and then are abutted against the inner wall of the product.