CN219427378U

CN219427378U - Step type demoulding structure

Info

Publication number: CN219427378U
Application number: CN202320397025.4U
Authority: CN
Inventors: 罗庆操; 严丽丹; 胡铁轩; 宇海涛
Original assignee: Dongguan Hongwen Electronics Co ltd
Current assignee: Dongguan Hongwen Electronics Co ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-07-28
Anticipated expiration: 2033-03-06

Abstract

The utility model relates to the technical field of demolding structures, and discloses a step demolding structure, which comprises the following components: the outer peripheral surface of the inner core is obliquely arranged along the central axis, at least four sliding grooves are formed in the outer peripheral surface of the inner core, and the sliding grooves are arranged along the length direction of the inner core; the wall surface of the first sliding piece is provided with a first sliding strip matched with the sliding groove, the outer wall of the first sliding piece is provided with a first step, and the first sliding piece and the inner core can slide relatively; the wall surface of the second sliding piece is provided with a second sliding strip matched with the sliding groove, the outer wall of the second sliding piece is provided with a second step, and the second sliding piece and the inner core can slide relatively; when the inner core slides relative to the first sliding piece and the second sliding piece, the first sliding piece and the second sliding piece shrink or expand along the radial direction of the inner core. The utility model can ensure the quality of the demolding product, does not damage the product, and is more suitable for practical use.

Description

Step type demoulding structure

Technical Field

The utility model relates to the technical field of demolding structures, in particular to a stepped demolding structure.

Background

In injection molded products, step structures are arranged at the positions of round holes of some products, the upper space is small, the lower space is large, and under the condition that the upper space and the lower space are not different from each other, the demolding structure is mostly formed by adopting the outline of a part to perform profiling preparation with the step structure of the product, and then performing forced demolding.

However, in practical use, the forced demolding mode is easy to pull out cracks at the round hole position of the product, so that the product is defective, the quality of the product is not satisfactory, and the product is not suitable for continuous use.

Improvements in this regard are needed.

Disclosure of Invention

The technical problem solved by the utility model is to provide a step-type demoulding structure aiming at the defects in the prior art, and the main purpose of the step-type demoulding structure is to realize demoulding by designing the combination of an inner core, a first sliding piece and a second sliding piece and driving the first sliding piece and the second sliding piece to shrink by the inner core so as to solve the problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: a stepped demolding structure, comprising: the outer peripheral surface of the inner core is obliquely arranged along the central axis, at least four sliding grooves are formed in the outer peripheral surface of the inner core, and the sliding grooves are arranged along the length direction of the inner core; the sliding device comprises at least two first sliding parts, wherein the wall surface of each first sliding part is provided with a first sliding strip matched with the corresponding sliding groove, the outer wall of each first sliding part is provided with a first step, and the first sliding parts and the inner cores can slide relatively; the second sliding parts are more than two, the wall surfaces of the second sliding parts are provided with second sliding strips matched with the sliding grooves, the outer walls of the second sliding parts are provided with second steps, and the second sliding parts and the inner cores can slide relatively; the first sliding piece and the second sliding piece shrink or expand along the radial direction of the inner core when the inner core slides relative to the first sliding piece and the second sliding piece.

Further, two sides of the first sliding strip of the first sliding piece are provided with planes.

Further, two sides of the second sliding piece are provided with guide surfaces which are obliquely arranged, and the guide surfaces move along the plane.

Further, the sliding groove is recessed inwards along the inner core, and the first sliding strip and the second sliding strip protrude outwards.

Further, the first sliding piece and the second sliding piece are alternately matched on the sliding groove of the inner core.

Further, the first step and the second step are matched to form an annular step.

Compared with the prior art, the utility model has the beneficial effects that: through design inner core, first slider and second slider, when carrying out the drawing of patterns, when the inner core removes, drive first slider and second slider inwards move to accomplish the drawing of patterns operation, do not lead to the fact the damage to the product, more be suitable for the in-service use process.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a product.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a schematic view of the contracted state structure of the present utility model.

Fig. 4 is a schematic structural view of the core.

Fig. 5 is a schematic structural view of the first slider.

Fig. 6 is a schematic structural view of the second slider.

Fig. 7 is a schematic structural view of the first slider and the second slider.

Reference numerals: 1. an inner core; 2. a chute; 3. a first slider; 4. a first slide bar; 5. a first step; 6. a second slider; 7. a second slide bar; 8. a second step; 9. a plane; 10. a guide surface.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended for purposes of illustrating the present application and are not to be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a number", "a plurality" or "a plurality" is two or more, unless explicitly defined otherwise. In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 terms in this application will be understood by those of ordinary skill in the art as the case may be. In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

In view of the technical problems described in the background art, as shown in fig. 1 to 7, there is provided a step-type demolding structure, including: the inner core 1, the outer peripheral surface of the inner core 1 is arranged along the central axis in an inclined way, at least four sliding grooves 2 are arranged on the outer peripheral surface of the inner core 1, and the sliding grooves 2 are arranged along the length direction of the inner core 1; the first sliding parts 3 are more than two, the wall surfaces of the first sliding parts 3 are provided with first sliding strips 4 matched with the sliding grooves 2, the outer walls of the first sliding parts 4 are provided with first steps 5, and the first sliding parts 3 and the inner core 1 can slide relatively; the number of the second sliding parts 6 is more than two, the wall surface of the second sliding part 6 is provided with a second sliding strip 7 matched with the sliding groove 2, the outer wall of the second sliding part 6 is provided with a second step 8, and the second sliding part 6 and the inner core 1 can slide relatively; when the inner core 1 slides relative to the first sliding member 3 and the second sliding member 6, the first sliding member 3 and the second sliding member 6 contract or expand along the radial direction of the inner core 1.

In the use process of the step demolding structure, the number of the first sliding pieces 3 and the second sliding pieces 6 is three, the first sliding pieces 3 and the second sliding pieces 6 are arranged in a staggered mode on the circumference, such as the forms of the first sliding pieces 3-second sliding pieces 6-first sliding pieces 3-second sliding pieces 6, the first steps 5 and the second steps 8 are positioned at the same level and are used for being matched to form annular steps, the annular steps are identical to the steps at the round hole positions of products, after the injection molding of the products is finished, the round hole positions of the products are required to be demolded, the inner core 1 is designed into a conical shape, and since the first sliding pieces 3 are arranged on the sliding grooves 2 of the inner core 1 through the first sliding strips 4, the second sliding pieces 6 are arranged on the sliding grooves 2 of the inner core 1 through the second sliding strips 7, so that when the inner core 1 moves relative to the first sliding pieces 3 and the second sliding pieces 6 under the driving of external force, the first sliding pieces 3 and the second sliding pieces 6 move along the radial directions, shrinkage is achieved, and the demolding structure is not suitable for practical use.

The first slider 3 is provided with a plane 9 on both sides of the first slider 4. The second slide 6 is provided on both sides with obliquely arranged guide surfaces 10, which guide surfaces 10 move along the plane 9.

In order to facilitate the movement of the core 1, the first slider 3 and the second slider 6 can be smoothly moved, and the guide surface 10 is moved along the plane 9 during the movement, thereby achieving the contraction of the first slider 3 and the second slider 6.

Preferably, the sliding groove 2 is recessed inward along the inner core 1, and the first sliding strip 4 and the second sliding strip 7 are protruding outwards.

The above description should not be taken as limiting the scope of the utility model, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims

1. A stepped stripping structure, comprising:

the outer peripheral surface of the inner core is obliquely arranged along the central axis, at least four sliding grooves are formed in the outer peripheral surface of the inner core, and the sliding grooves are arranged along the length direction of the inner core;

the sliding device comprises at least two first sliding parts, wherein the wall surface of each first sliding part is provided with a first sliding strip matched with the corresponding sliding groove, the outer wall of each first sliding part is provided with a first step, and the first sliding parts and the inner cores can slide relatively;

the second sliding parts are more than two, the wall surfaces of the second sliding parts are provided with second sliding strips matched with the sliding grooves, the outer walls of the second sliding parts are provided with second steps, and the second sliding parts and the inner cores can slide relatively;

the first sliding piece and the second sliding piece shrink or expand along the radial direction of the inner core when the inner core slides relative to the first sliding piece and the second sliding piece.

2. The stepped demolding structure according to claim 1, characterized in that: the first sliding piece is provided with a plane on two sides of the first sliding strip.

3. The stepped demolding structure according to claim 2, characterized in that: and two sides of the second sliding piece are provided with obliquely arranged guide surfaces, and the guide surfaces move along the plane.

4. The stepped demolding structure according to claim 1, characterized in that: the sliding groove is recessed inwards along the inner core, and the first sliding strip and the second sliding strip protrude outwards.

5. The stepped demolding structure according to claim 1, characterized in that: the first sliding piece and the second sliding piece are alternately matched on the sliding groove of the inner core.

6. The stepped demolding structure according to claim 1, characterized in that: the first step and the second step are matched to form an annular step.