CN214773681U

CN214773681U - Prevent garbage bin cover injection mold of fracture

Info

Publication number: CN214773681U
Application number: CN202121266891.7U
Authority: CN
Inventors: 龚志强
Original assignee: Taicang Huaxu Plastic Technology Co ltd
Current assignee: Taicang Huaxu Plastic Technology Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-11-19
Anticipated expiration: 2031-06-08

Abstract

The utility model belongs to the technical field of the dustbin is made, concretely relates to prevent garbage bin lid injection mold of fracture. The utility model comprises a first module and a second module which can be coupled oppositely; a concave mold core is embedded in the first module, and a convex mold core is embedded in the second module; the inner surface of the concave die core in a concave shape is marked as a concave die surface, the outer surface of the convex die core in a convex shape is marked as a convex die surface, and a cavity formed by enclosing the concave die surface and the convex die surface is a die cavity; a group of heating devices are embedded in the male die core along the male die surface, and a group of cooling channels are arranged in the female die core along the female die surface; an injection molding runner leading to a mold cavity is arranged in the male mold core. The utility model provides a prevent garbage bin cover injection mold of fracture alleviates the power that cramps of garbage bin on the terrace die face through set up heating device in the terrace die to the power of tearing that the garbage bin bucket wall bore when reducing the drawing of patterns, the air flue of deuterogamying blows, realizes smooth drawing of patterns, effectively suppresses the fracture, improves product yields and market competition.

Description

Prevent garbage bin cover injection mold of fracture

Technical Field

The utility model belongs to the technical field of the dustbin is made, concretely relates to prevent garbage bin lid injection mold of fracture.

Background

In recent years, with the gradual establishment and perfection of garbage classification awareness and measures, the market demand of garbage cans is rapidly growing. In modern industrial production, the garbage can is mainly made of plastic and is manufactured in batches by an injection molding method. In order to facilitate the demolding during the injection molding production, the trash can usually has a can body with a larger opening and a smaller bottom, and an inclined shape with a wide top and a narrow bottom is formed. Generally, the inclination angle of the side wall of the garbage bin is always larger than 3 degrees. However, in consideration of the appearance of the trash can, such as beautiful appearance, matching with the style of the use environment, etc., some trash cans are required to be designed to have a small inclination angle (the inclination angle of the side wall is less than 1 °) or even a non-inclination angle, which brings great difficulty to mold release. In the injection molding cooling forming process, the garbage bin staving cooling shrink cramps on the terrace die surface, and the design at little inclination can cause very big resistance for the relative terrace die slip of staving, and the atress is too big at the drawing of patterns in-process, consequently arouses direct fracture or forms recessive crackle easily.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a prevent rubbish bung injection mold of fracture.

The utility model provides a cracking-proof injection mold for a garbage can cover, which comprises a first module and a second module which can be coupled oppositely; a concave mold core is embedded in the first module, and a convex mold core is embedded in the second module; the inner surface of the concave die core in a concave shape is marked as a concave die surface, the outer surface of the convex die core in a convex shape is marked as a convex die surface, and a cavity formed by enclosing the concave die surface and the convex die surface is a die cavity; a group of heating devices are embedded in the male die core along the male die surface, and a group of cooling channels are arranged in the female die core along the female die surface; an injection molding runner leading to a mold cavity is arranged in the male mold core.

The utility model provides an injection mold makes the raw materials cooling of mould intracavity through the cooling runner in the work, and the shaping obtains the garbage bin, because garbage bin cooling shrink, the garbage bin after the die sinking can cramp on the terrace die face, uses heating device to slightly heat the garbage bin this moment, alleviates the cramping force of garbage bin on the terrace die face, takes off the garbage bin from the terrace die face this moment again, and frictional force obtains reducing, consequently is difficult for the fracture.

Further, the heating device is preferably an electric heating tube.

Further, each heating device is arranged in parallel with the male die surface.

Further, the respective heating means are equally spaced from the male mold surface.

Furthermore, the cooling flow channel is rectangular and is arranged around the surface of the female die at intervals.

Further, the planes of the adjacent cooling flow channels are parallel to each other.

Furthermore, a liquid inlet end and a liquid outlet end are respectively arranged at the opposite corners of the cooling flow channels, the liquid inlet ends of the cooling flow channels are connected with the total liquid inlet flow channel in a gathering manner, and the liquid outlet ends of the cooling flow channels are connected with the total liquid outlet flow channel in a gathering manner.

Furthermore, an air passage leading to the die cavity is arranged in the male die core. When the garbage bin takes off from the terrace die face, through the inside high-pressure gas that injects of air flue, high-pressure gas flows in the gap between terrace die face and the garbage bin, is favorable to the garbage bin to take off smoothly from the terrace die face.

Furthermore, a group of positioning bulges facing the second module are arranged on the first module, and a group of positioning depressions matched with the positioning bulges are also arranged on the second module. When the mold is closed, the positioning bulge is clamped into the positioning recess, so that the mold closing precision is improved.

Has the advantages that: compared with the prior art, the utility model provides a prevent garbage bin cover injection mold of fracture alleviates the power that cramps of garbage bin on the terrace die face through set up heating device in the terrace die to the power of tearing that the garbage bin bucket wall bore when reducing the drawing of patterns, the air flue of deuterogamying blows, realizes smooth drawing of patterns, effectively suppresses the fracture, improves product yields and market competition.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 and 3 are partial enlarged views of fig. 1.

Fig. 4 is a schematic distribution diagram of cooling channels in the cavity of the die.

Fig. 5 is a schematic view of the distribution of the heating means within the cross-section of the core.

In the figure, a first module 1, a second module 2, a female mold core 3, a male mold core 4, a female mold surface 31, a male mold surface 41, a heating device 42, an injection molding flow channel 43, a cooling flow channel 32, a total liquid inlet flow channel 33, a total liquid outlet flow channel 34, an air channel 44, a positioning protrusion 11 and a positioning recess 21.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to illustrate the technical solutions of the present invention more clearly and are not to be construed as a limitation.

Unless defined otherwise, technical or scientific terms used herein should be understood as having the ordinary meaning as understood by those of ordinary skill in the art. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example 1

An anti-cracking injection mold for a trash can cover is shown in fig. 1 to 3 and comprises a first module 1 and a second module 2 which can be coupled oppositely; a concave mold core 3 is embedded in the first module 1, and a convex mold core 4 is embedded in the second module 2; the inner surface of the concave core 3 in a concave shape is marked as a concave die surface 31, the outer surface of the convex core 4 in a convex shape is marked as a convex die surface 41, and a cavity formed by enclosing the concave die surface 31 and the convex die surface 41 is a die cavity; a group of heating devices 42 are embedded in the male die core 4 along the male die surface 41, and a group of cooling channels 32 are arranged in the female die core 3 along the female die surface 31; an injection runner 43 leading to the mold cavity is provided in the core punch 4.

In this embodiment, the heating device 42 is an electric heating tube.

In this embodiment, the cooling channel 32 is rectangular and is disposed around the die surface 31 at a distance.

In this embodiment, an air passage 44 leading to the cavity is also provided in the core 4.

In this embodiment, the first module 1 is provided with a set of positioning protrusions 11 facing the second module 2, and the second module 2 is further provided with a set of positioning recesses 21 matching with the positioning protrusions 11.

Example 2

An anti-cracking injection mold for a trash can cover is shown in fig. 1 to 5 and comprises a first module 1 and a second module 2 which can be coupled oppositely; a concave mold core 3 is embedded in the first module 1, and a convex mold core 4 is embedded in the second module 2; the inner surface of the concave core 3 in a concave shape is marked as a concave die surface 31, the outer surface of the convex core 4 in a convex shape is marked as a convex die surface 41, and a cavity formed by enclosing the concave die surface 31 and the convex die surface 41 is a die cavity; a group of heating devices 42 are embedded in the male die core 4 along the male die surface 41, and a group of cooling channels 32 are arranged in the female die core 3 along the female die surface 31; an injection runner 43 leading to the mold cavity is provided in the core punch 4.

In this embodiment, the heating device 42 is an electric heating tube.

In the present embodiment, each heating device 42 is disposed in parallel with the punch face 41.

In this embodiment, the respective heating means 42 are equally spaced from the punch face 41.

In this embodiment, the planes of the adjacent cooling channels 32 are parallel to each other.

In this embodiment, the liquid inlet end and the liquid outlet end are respectively disposed at opposite corners of the cooling flow channels 32, the liquid inlet ends of the cooling flow channels 32 are connected to the total liquid inlet flow channel 33 in a converging manner, and the liquid outlet ends of the cooling flow channels 32 are connected to the total liquid outlet flow channel 34 in a converging manner.

It is obvious that the above embodiments are exemplary, and are only a part of the embodiments of the present invention, not all of them. Other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the described embodiments, shall also fall within the scope of protection of the present invention.

Claims

1. The utility model provides a prevent garbage bin lid injection mold of fracture which characterized in that: comprises a first module (1) and a second module (2) which can be coupled oppositely; a concave die core (3) is embedded in the first module (1), and a convex die core (4) is embedded in the second module (2); the inner surface of the concave die core (3) in a concave shape is marked as a concave die surface (31), the outer surface of the convex die core (4) in a convex shape is marked as a convex die surface (41), and a cavity formed by enclosing the concave die surface (31) and the convex die surface (41) is a die cavity; a group of heating devices (42) are embedded in the convex die core (4) along the convex die surface (41), and a group of cooling flow channels (32) are arranged in the concave die core (3) along the concave die surface (31); an injection molding runner (43) leading to a mold cavity is arranged in the convex mold core (4).

2. The anti-cracking injection mold for the trash can cover according to claim 1, wherein: the heating device (42) is an electric heating tube.

3. The anti-cracking trash can cover injection mold of claim 2, wherein: each heating device (42) is arranged in parallel with the convex die surface (41).

4. The anti-cracking injection mold for the trash can cover according to claim 3, wherein: the heating devices (42) are equally spaced from the male mould surface (41).

5. The anti-cracking injection mold for the trash can cover according to claim 1, wherein: the cooling flow channel (32) is rectangular and is arranged along the concave die surface (31) in a surrounding mode at intervals.

6. The anti-cracking injection mold for the trash can cover according to claim 5, wherein: the planes of adjacent cooling channels (32) are parallel to each other.

7. The anti-cracking injection mold for the trash can cover according to claim 6, wherein: liquid inlet ends and liquid outlet ends are respectively arranged at the diagonal positions of the cooling flow channels (32), the liquid inlet ends of the cooling flow channels (32) are connected with a total liquid inlet flow channel (33) in a gathering manner, and the liquid outlet ends of the cooling flow channels (32) are connected with a total liquid outlet flow channel (34) in a gathering manner.

8. The anti-cracking garbage can cover injection mold according to any one of claims 1 to 7, wherein: an air passage (44) leading to the die cavity is also arranged in the convex die core (4).

9. The anti-cracking injection mold for the trash can cover according to claim 8, wherein: the first module (1) is provided with a group of positioning protrusions (11) facing the second module (2), and the second module (2) is further provided with a group of positioning recesses (21) matched with the positioning protrusions (11).