CN220073071U

CN220073071U - Ejection die for cylinder shell

Info

Publication number: CN220073071U
Application number: CN202321493890.5U
Authority: CN
Inventors: 孙玉树; 胡金杰; 赵金昌
Original assignee: Ningbo Henghe Precision Industry Co ltd
Current assignee: Ningbo Henghe Precision Industry Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-11-24
Anticipated expiration: 2033-06-12

Abstract

The utility model discloses an ejection die for a cylinder shell, which comprises: the lower die core is provided with an arc surface for forming an arc shell, the bottom of the arc shell is provided with an opening, the arc shell and the arc surface are divided into a first part with the radian of pi and a second part with the radian of pi; the ejection assembly comprises a top plate arranged below the lower die core and an inclined ejection part formed on the top plate, wherein the inclined ejection part obliquely penetrates through the lower die core and is provided with a forming surface forming part of an arc surface, the forming surface is at least correspondingly arranged on a second part of the part, the inclined ejection part is ejected out along with the top plate and far away from the lower die core so as to force the second part of the arc-shaped shell to expand, and in the ejection process, the second part of the arc-shaped shell expands and slides upwards relative to the second part of the lower die core to force the second part of the arc-shaped shell to locally expand.

Description

Ejection die for cylinder shell

Technical Field

The utility model relates to the technical field of dies, in particular to an ejection die for a cylindrical shell.

Background

At present, for some products with cylindrical shells, which have thinner shells and larger radian outlines, the product has larger back-off modulus, if the products are directly ejected and demolded, the products are interfered with an inner core and are easily damaged in the ejection and demolding process, and particularly for some products such as air purifiers and the like which need to form dense through holes on the shells, the products also have larger length dimension, so that the inner core pulling work cannot be performed, and an ejection mold suitable for the large back-off modulus is needed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide an ejection die for a cylinder shell.

The technical aim of the utility model is realized by the following technical scheme: an ejector die for a cylinder housing, comprising:

the lower die core is provided with an arc surface for forming an arc shell, the bottom of the arc shell is provided with an opening, the arc shell and the arc surface are divided into a first part with the radian of pi and a second part with the radian of pi;

the ejection assembly comprises a top plate arranged below the lower die core and an inclined top part formed on the top plate, wherein the inclined top part obliquely penetrates through the lower die core and is provided with a forming surface forming part of an arc surface, the forming surface is at least correspondingly arranged on a second part of the arc surface, and the inclined top part is ejected along with the top plate and far away from the lower die core so as to force the second part of the arc-shaped shell to expand.

Further, the molding surface extends along a first portion to a second portion of the arcuate surface.

Further, the ejection assembly further comprises ejection components, the top of the center line of the arc-shaped shell is provided with a plane part, the ejection components are correspondingly arranged relative to the center line of the lower die core, and the inclined ejection components are arranged on two sides of the ejection components.

Further, the arc-shaped housing may be provided to expand to both sides with respect to the opening.

Further, a base is arranged between the inclined top part and the top plate, and the inclined top part is allowed to slide towards the inner side of the die core on the base.

Further, the inclined top part is inclined towards the center of the top of the lower die core, and the inclined top part is also provided with a core assembly for forming the hole column type characteristic of the inner side of the arc-shaped shell.

Further, a sliding groove is formed in the base, the inclined top part is provided with a sliding end arranged in the sliding groove, and an anti-falling part extending out of the upper portion of the sliding end is further arranged on the sliding groove.

Further, the angled roof member and the ejector member are disposed at intervals with respect to a length direction of the arcuate housing.

Further, the method further comprises the following steps: the side die core and the upper die core are provided with a first positioning structure, the side die core and the lower die core are provided with a second positioning structure, the upper die core and the lower die core are provided with a third positioning structure, and a forming space matched with the arc-shaped shell is formed among the side die core, the upper die core and the lower die core.

Further, the method further comprises the following steps: the die comprises an upper die plate, wherein the upper die core is fixed at the bottom of the upper die plate, the bottom of the side die core is connected with a sliding seat, a diagonal draw bar is arranged in the sliding seat in a penetrating mode, and the diagonal draw bar is connected with the upper die plate.

Compared with the prior art, the utility model has the following advantages and beneficial effects: through wear to establish the oblique top part in the lower mould benevolence, top part and ejecting part move along with the roof to one side, top part and ejecting part drive arc casing upwards leave the lower mould benevolence to one side, in addition, top part and ejecting part are as the profile internal stay of arc casing keeps the appearance of arc casing, in ejecting process, the second part expansion of arc casing relative lower mould benevolence and upwards slide, force the local expansion of second part of arc casing, simultaneously, the oblique top part that the slant set up has the stroke that is close to towards the center when ejecting, thereby make ejecting subassembly be close to the supporting part of arc casing towards the center, and accomplish the drawing of patterns of the inboard hole post class characteristic of arc casing.

Drawings

FIG. 1 is a cross-sectional view of an ejector assembly of the present utility model;

FIG. 2 is another angular cross-sectional view of the ejector assembly of the present utility model;

FIG. 3 is a schematic view of the structure of the pitched roof component of the present utility model;

FIG. 4 is a schematic diagram of the upper mold core and the lower mold core of the present utility model;

FIG. 5 is a schematic diagram showing the cooperation of the side mold insert, the upper mold insert and the lower mold insert according to the present utility model;

FIG. 6 is a schematic view of an arc-shaped housing according to the present utility model;

FIG. 7 is a front view of the arcuate housing of the present utility model;

FIG. 8 is a schematic view of the lower mold insert and the ejector assembly of the present utility model;

FIG. 9 is a schematic illustration of the core assembly of the present utility model;

in the figure: 1. a lower die core; 1.1, an arc-shaped surface;

2. a first portion; 3. a second portion;

4. an ejection assembly; 4.1, a top plate; 4.2, a pitched roof component; 4.21, molding surface; 4.22, sliding end; 4.23, a guide rod;

4.3, ejection parts; 4.4, a base; 4.41, a chute; 4.42, anti-drop part;

5. an arc-shaped housing; 5.1, a planar portion; 5.2, hole column features; 5.3, a through hole part;

6. a core assembly; 6.1, forming holes; 6.2, forming pins;

7. a first positioning structure; 7.1, a positioning groove; 7.2, positioning convex strips;

8. a second positioning structure; 8.1, a first step; 8.2, a second step;

9. a third positioning structure; 9.1, positioning holes; 9.2, positioning columns;

10. an upper die core; 11. a side mold core;

12. an upper template; 13. a slide; 14. a diagonal draw bar; 15. a convex portion; 16. a cooling channel;

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding and are not used to define any directional or sequential limitation.

As shown in fig. 1-9, an ejector die for a cylindrical shell, comprising:

the lower die core 1 is provided with an arc surface 1.1 for forming an arc shell 5, the bottom of the arc shell 5 is opened, the arc shell 5 and the arc surface 1.1 are divided into a first part 2 with the radian pi and a second part 3 with the radian pi, wherein the first part 2 with the radian pi takes a semicircular shape, and the second part 3 is taken as an arc part which continuously extends about the semicircle to form an inverted buckle modulus;

the material of the arc-shaped shell 5 is ABS, and the arc-shaped shell 5 can be expanded to two sides with respect to the opening, and has a certain capability of recovering the shape after deformation.

As shown in fig. 1, 2 and 8, the ejection assembly 4 includes a top plate 4.1 disposed below the lower mold core 1, and an inclined top part 4.2 formed on the top plate 4.1, where the inclined top part 4.2 is obliquely penetrating into the lower mold core 1, the inclined top part 4.2 has a forming surface 4.21 matched with the lower mold core 1, and the forming surface 4.21 forms a part of an arc surface 1.1 in a normal state, where the forming surface 4.21 is at least corresponding to the second part 3 disposed in part, and the inclined top part 4.2 ejects with the top plate 4.1 and is far away from the lower mold core 1, and the inclined top part 4.2 can drive the arc shell 5 to be far away from the lower mold core 1, and the second part 3 of the arc shell 5 slides along the second part 3 of the lower mold core 1 so as to force the lower end of the second part 3 of the arc shell 5 to expand accordingly.

As shown in fig. 7, the ratio of the radial vector R1 to the radius R in the horizontal direction satisfies 0.138 to 0.148.

By way of example, the arc-shaped casing 5 has a maximum width dimension of 321.6mm, a maximum length dimension of 491.95, a maximum height dimension of 237.74, a central angle a corresponding to the second portion 3 of 30 °, and a back-off modulus in the horizontal direction of 23.72mm.

Specifically, the pitched roof element 4.2 is arranged on both sides of the arcuate housing 5, and the molding surface 4.21 thereon extends along the first portion 2 to the second portion 3 of the arcuate surface 1.1 to enhance the supporting effect on the arcuate housing 5, so that the pitched roof element 4.2 maintains the top and side contours of the arcuate housing 5 during ejection and increases the molding ratio of the pitched roof element 4.2 with respect to the arcuate housing 5 to facilitate the disengagement of the arcuate housing 5 from the lower mold core 1.

Specifically, the inclined top parts 4.2 located at both sides of the arc-shaped casing 5 incline towards the top center side of the arc-shaped casing 5, so that in the ejection process, the inclined top parts 4.2 gradually move towards the center, that is, the supporting parts corresponding to the arc-shaped casing 5 are also closed towards the center.

As a further improvement to the ejection assembly 4, as shown in fig. 2 and 8, the ejection assembly 4 further includes an ejection member 4.3, where the ejection member 4.3 receives the top plate 4.1 and ejects synchronously with the inclined top member 4.2 along with the action of the top plate 4.1, where the center top of the arc-shaped housing 5 has a planar portion 5.1, the ejection member 4.3 is disposed correspondingly with respect to the center line of the lower mold core 1, and forms the planar portion 5.1 of the arc-shaped housing 5, and the ejection portion serves as a supporting portion to support the arc-shaped housing 5 so as to maintain the center profile of the arc-shaped housing 5 during ejection, so as to force both sides of the arc-shaped housing 5 to expand.

Preferably, based on the arrangement of the ejection member 4.3, the angled ejection member 4.2 is adjacent to the ejection member 4.3 and tends to engage the side edges of the ejection member 4.3 during ejection.

As a further explanation of the angled roof part 4.2, as shown in fig. 3, a base 4.4 is provided between the angled roof part 4.2 and the top plate 4.1, the angled roof part 4.2 is connected to the top plate 4.1 via the base 4.4, and the angled roof part 4.2 is further provided with a guide bar 4.23 to ensure stability of the ejection action, during which the angled roof part 4.2 is allowed to slide on the base 4.4 towards the inside of the mold core.

Specifically, for stability of the inclined top part 4.2 in the ejection process, the base 4.4 is provided with a sliding groove 4.41, the inclined top part 4.2 is provided with a sliding end 4.22 arranged in the sliding groove 4.41, the sliding groove 4.41 is arranged in the horizontal direction so that the inclined top part 4.2 slides towards the center of the lower die core 1 in the ejection process, and in addition, the sliding groove 4.41 is also provided with an anti-falling part 4.42 extending out of the upper part of the sliding end 4.22, so that the section of the sliding groove 4.41 is in an inverted T shape so as to limit the inclined top part 4.2 from being separated from the base 4.4 in the vertical direction.

As shown in fig. 6, 7 and 9, in other embodiments the inner surface of the arcuate housing 5 is also provided with a hole post feature 5.2, which is embodied as a connecting post with an opening, which is mainly used for the connection of the product, preferably arranged at both ends of the diametrical connection line of the arcuate housing 5, which diametrical connection serves as a parting line of the first part 2 and the second part 3 of the arcuate housing 5.

Based on the above, the core assembly 6 is provided on the pitched roof part, the core assembly 6 includes a forming hole 6.1 for forming the hole pillar feature 5.2, and a forming pin 6.2 with a diameter smaller than that of the forming hole 6.1 is provided in the forming hole 6.1, and the forming pin 6.2 is inserted into the forming hole 6.1, so that the forming pin 6.2 has a sliding stroke away from the forming hole 6.1 in the pitched roof part 4.2, so that the forming pin 6.2 is smoothly separated from the hole pillar feature 5.2 during ejection, and the pitched roof part 4.2 has an inward closing stroke in the upward ejection process due to the pitched roof part 4.2, so that the forming pin 6.2 is far away from the hole pillar feature 5.2 under the driving of the pitched roof part 4.2, and the hole pillar feature 5.2 located on the arc-shaped shell 5 is also expanded under the guidance of the second part 3 of the lower die core 1, so as to be far away from the forming pin 6.2 and the forming hole 6.1.

In the present utility model, the arc-shaped housing is arranged to extend about the central axis, and the angled ejector member 4.2 and the ejector member 4.3 are arranged at intervals about the longitudinal direction of the arc-shaped housing 5.

As a further embodiment of shaping the arc-shaped housing 5, it further comprises:

the side mold core 11 and the upper mold core 10, the side mold core 11 is arranged at two sides of the lower mold core 1, the upper mold core 10 is arranged at the top of the lower mold core 1, and the upper mold core 10, the lower mold core 1 and the side mold core 11 are mutually jointed to form a forming cavity of the arc-shaped shell 5.

The upper die core 10 is fixedly connected to the bottom of the upper die plate 12, the bottom of the side die core 11 is connected with a sliding seat 13, a diagonal draw bar 14 is arranged in the sliding seat 13 in a penetrating mode, and the diagonal draw bar 14 is connected with the upper die plate 12.

For the arc-shaped shell 5 of the air purifier, a plurality of through hole parts 5.3 are arranged on the arc-shaped shell, a plurality of convex parts 15 for forming the through hole parts 5.3 are arranged on the forming parts of the upper die core 10 and the side die core 11, so that the lower die core 1 is provided with a continuous consistent arc-shaped surface 1.1, the ejection of the arc-shaped shell 5 by the ejection assembly 4 is facilitated, and in the ejection and demolding process, the upper die core 10 and the side die core 11 act before the ejection assembly 4, so that the ejection of the through hole parts 5.3 on the arc-shaped shell 5 is facilitated.

As shown in fig. 4 and 5, in order to ensure the reliability of the fit of the molding space, a first positioning structure 7 is disposed between the side mold core 11 and the upper mold core 10, a second positioning structure 8 is disposed between the side mold core 11 and the lower mold core 1, a third positioning structure 9 is disposed between the upper mold core 10 and the lower mold core 1, and a molding space matching with the arc-shaped housing 5 is formed between the side mold core 11, the upper mold core 10 and the lower mold core 1.

The first positioning structure 7 comprises a positioning groove 7.1 arranged at the top of the side die core 11, a plurality of positioning grooves 7.1 extend along the axial length of the arc-shaped shell 5 at intervals, and positioning convex strips 7.2 arranged at the bottom of the upper die core 10, wherein matched inclined planes are arranged between the positioning convex strips 7.2 and the positioning grooves 7.1;

the second positioning structure 8 comprises a first step 8.1 and a second step 8.2 which are sequentially arranged on two sides of the bottom of the lower die core 1, wherein the first step 8.1 is in slope arrangement, a slope surface matched with the first step 8.1 is arranged on the side die core 11, the slope surface is abutted to the first step 8.1 and forms a parting surface of the arc-shaped shell 5, and a sliding seat 13 at the bottom of the side die core 11 is abutted to the second step 8.2 and matched.

The third positioning structure 9 comprises positioning columns 9.2 and positioning holes 9.1 which are arranged on the outer side of the forming space, wherein the positioning columns 9.2 are fixedly arranged between the upper die plate 12 and the upper die core 10, the positioning holes 9.1 are correspondingly arranged on the lower die core 1, and the positioning of the upper die core 10 and the lower die core 1 is realized through the plug-in fit of the positioning columns 9.2 and the positioning holes 9.1.

As a further improvement of the present utility model, cooling channels 16 are provided in the upper mold core 10, the lower mold core 1 and the side mold cores 11, and the cooling channels 16 are provided with respect to the contour of the arc-shaped housing 5.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. An ejector die for a cylindrical shell, comprising:

the lower die core (1) is provided with an arc surface (1.1) for forming an arc shell (5), the bottom of the arc shell (5) is open, the arc shell (5) and the arc surface (1.1) are divided into a first part (2) with the radian pi, and a second part (3) with the radian pi;

the ejection assembly (4) comprises a top plate (4.1) arranged below the lower die core (1) and an inclined top part (4.2) formed on the top plate (4.1), wherein the inclined top part (4.2) obliquely penetrates through the lower die core (1), the inclined top part (4.2) is provided with a forming surface (4.21) forming part of an arc-shaped surface (1.1), the forming surface (4.21) is at least correspondingly arranged on a part of a second part (3), and the inclined top part (4.2) is ejected along with the top plate (4.1) and far away from the lower die core (1) so as to force the second part (3) of the arc-shaped shell (5) to expand.

2. An ejector die for a cylindrical shell as in claim 1, wherein: the molding surface (4.21) extends along a first portion (2) of the arcuate surface (1.1) to a second portion (3).

3. An ejector die for a cylindrical shell as in claim 1, wherein: the inclined top part (4.2) is inclined towards the top center of the lower die core (1), and the inclined top part (4.2) is also provided with a core assembly (6) for forming the hole column characteristics of the inner side of the arc-shaped shell (5).

4. An ejector die for a cylindrical shell as in claim 1, wherein: the ejection assembly (4) further comprises ejection components (4.3), the top of the center line of the arc-shaped shell (5) is provided with a plane part (5.1), the ejection components (4.3) are correspondingly arranged relative to the center line of the lower die core (1), and the oblique ejection components are arranged on two sides of the ejection components.

5. An ejector die for a cylindrical shell as in claim 1, wherein: the arc-shaped shell (5) can be expanded to two sides relative to the opening.

6. An ejector die for a cylindrical shell as in claim 1, wherein: a base (4.4) is arranged between the inclined top part (4.2) and the top plate (4.1), and the inclined top part (4.2) is allowed to slide towards the inner side of the die core on the base (4.4).

7. An ejector die for a cylindrical shell as in claim 6, wherein: the base (4.4) is provided with a sliding groove (4.41), the inclined top part (4.2) is provided with a sliding end (4.22) arranged in the sliding groove (4.41), and the sliding groove (4.41) is also provided with an anti-falling part (4.42) extending out of the upper part of the sliding end (4.22).

8. An ejector die for a cylindrical shell as in claim 4, wherein: the inclined top part (4.2) and the ejection part (4.3) are arranged at intervals in the length direction of the arc-shaped shell (5).

9. An ejector die for a cylinder housing as in any one of claims 1 to 8, wherein: further comprises: side mould benevolence (11) and last mould benevolence (10), be equipped with first location structure (7) between side mould benevolence (11) and the last mould benevolence (10), be equipped with second location structure (8) between side mould benevolence (11) and lower mould benevolence (1), be equipped with third location structure (9) between last mould benevolence (10) and lower mould benevolence (1), form the shaping space that matches with arc casing (5) between side mould benevolence (11), last mould benevolence (10) and lower mould benevolence (1).

10. An ejector die for a cylindrical shell as in claim 9, wherein: further comprises: the die comprises an upper die plate (12), wherein the upper die core (10) is fixed at the bottom of the upper die plate (12), a sliding seat (13) is connected to the bottom of the side die core (11), an inclined pull rod (14) is arranged in the sliding seat (13) in a penetrating mode, and the inclined pull rod (14) is connected with the upper die plate (12).