CN115476461A - Plastic part forming method, plastic part forming equipment, shell and electronic equipment - Google Patents

Plastic part forming method, plastic part forming equipment, shell and electronic equipment Download PDF

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Publication number
CN115476461A
CN115476461A CN202110601993.8A CN202110601993A CN115476461A CN 115476461 A CN115476461 A CN 115476461A CN 202110601993 A CN202110601993 A CN 202110601993A CN 115476461 A CN115476461 A CN 115476461A
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CN
China
Prior art keywords
plastic material
mold
hole
plastic part
shaft body
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Pending
Application number
CN202110601993.8A
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Chinese (zh)
Inventor
翁剑兵
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Guangdong Genius Technology Co Ltd
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Guangdong Genius Technology Co Ltd
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Publication date
Application filed by Guangdong Genius Technology Co Ltd filed Critical Guangdong Genius Technology Co Ltd
Priority to CN202110601993.8A priority Critical patent/CN115476461A/en
Publication of CN115476461A publication Critical patent/CN115476461A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention discloses a plastic part forming method, plastic part forming equipment, a shell and electronic equipment, wherein the method comprises the following steps: providing a mould, and filling a plastic material in an inner cavity of the mould; maintaining the pressure of the plastic material in the mold; when the plastic material in the mold is in a molten state, controlling the movable insert to move so as to extrude a preset hole opening position of the plastic material, so as to form a hole at the preset hole opening position; cooling the plastic material to obtain the plastic part. The method can ensure the structural strength of the opening of the plastic part and reduce the processing cost of the plastic part at the same time.

Description

Plastic part forming method, plastic part forming equipment, shell and electronic equipment
Technical Field
The present invention relates to the field of injection molding technologies, and in particular, to a method for forming a plastic part, a device for forming a plastic part, a housing, and an electronic device.
Background
When the plastic part with the opening is molded, stress exists, so that the strength of the plastic part at the opening is reduced, and the welding line of the opening is stressed and cracked. In order to solve the above problems, two methods are adopted, one of which is to fill and level the opening, form a plastic part, and then mill the opening by using a CNC (Computerized Numerical Control). The mode of firstly filling and then CNC processing and tapping is adopted, so that the processing procedure is complicated and the processing cost is higher. Secondly, the RHCM (Rapid Heat Cycle Molding) is used for Molding the plastic part, but the method needs more auxiliary equipment, has a longer Molding period and can not control the processing cost.
Disclosure of Invention
The embodiment of the invention discloses a plastic part forming method, plastic part forming equipment, a shell and electronic equipment, which can reduce the processing cost of a plastic part while ensuring the structural strength of an opening of the plastic part.
In order to achieve the above object, in a first aspect, the present invention discloses a method for molding a plastic part, including:
providing a mould, and filling a plastic material in an inner cavity of the mould;
maintaining the pressure of the plastic material in the mold;
when the plastic material in the mold is in a molten state, controlling the movable insert to move so as to extrude a preset hole opening position of the plastic material, so as to form a hole at the preset hole opening position;
and cooling the plastic material to obtain the plastic part.
As an alternative implementation, in an embodiment of the first aspect of the present invention, the controlling the moving insert to move to press the preset hole position of the plastic material includes:
providing a driving mechanism, and connecting the driving mechanism with the movable insert;
and starting the driving mechanism, so that the driving mechanism controls the movable insert to move to extrude the preset hole opening position of the plastic material.
As an alternative embodiment, in an embodiment of the first aspect of the invention,
the driving mechanism comprises a hydraulic driving mechanism, a pneumatic driving mechanism or a driving motor.
As an optional implementation manner, in an embodiment of the first aspect of the present invention, the mold is provided with a first hole communicated with an inner cavity of the mold, and the first hole is used for the movable insert to extend into.
As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the first hole is a stepped hole, and includes a first portion and a second portion connected to the first portion, the first portion is disposed close to the inner cavity of the mold, and a connection portion of the second portion and the first portion forms a limiting surface;
the movable insert comprises a first shaft body and a second shaft body, the first shaft body extends into the first part, the second shaft body is provided with a first end face, the first end face is connected with the first shaft body, and the first end face is used for being abutted to the limiting face so as to limit the position of the first shaft body extending into the first part.
In a second aspect, the present invention discloses a plastic part molding apparatus, comprising:
a mold having an interior cavity for filling with a plastic material; and
the movable insert extends into the die and is used for extruding the preset opening position of the plastic material when the plastic material in the inner cavity is in a molten state so as to form an opening at the preset opening position.
As an alternative implementation manner, in an embodiment of the second aspect of the present invention, the mold is provided with a first hole communicated with an inner cavity of the mold, and the first hole is used for the movable insert to extend into.
As an alternative implementation manner, in an embodiment of the second aspect of the present invention, the first hole is a stepped hole, and includes a first portion and a second portion connected to the first portion, the first portion is disposed close to the inner cavity of the mold, and a connection portion of the second portion and the first portion forms a limiting surface;
the movable insert comprises a first shaft body and a second shaft body, the first shaft body extends into the first portion, the second shaft body is provided with a first end face, the first end face is connected with the first shaft body, and the first end face is used for being abutted to the limiting face so as to limit the position of the first shaft body extending into the first portion.
In a third aspect, the invention discloses a housing, which is formed by the molding method of the plastic part in the first aspect.
In a fourth aspect, the invention discloses an electronic device comprising a housing as described in the third aspect above.
Compared with the prior art, the invention has the beneficial effects that:
according to the plastic part forming method, the plastic part forming equipment, the shell and the electronic equipment, after the plastic material is filled into the inner cavity of the mold, the pressure maintaining is carried out on the plastic material in the mold, when the plastic material is still in a molten state, the movable insert is controlled to move so as to extrude the plastic material in the mold to form the opening, and then the plastic material is cooled and demoulded to obtain the plastic part with the opening. According to the plastic part obtained by the method, in the forming process, the plastic material can be extruded at the opening position of the plastic part due to the movable insert, so that the volume of the plastic material at the preset opening position is extruded, the local density of the plastic material at the preset opening position can be improved, the structural strength of the plastic material after the opening at the preset opening position is ensured, and the cracking of the welding line position of the opening is prevented. Meanwhile, the movable insert extrudes the plastic material to form the open pore, so that the open pore is not required to be obtained through secondary processing, the molding procedure of the plastic part is effectively simplified, and the processing cost of the plastic part is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a plastic molding apparatus according to an embodiment of the present invention before a movable insert is extruded to form an opening.
Fig. 2 is a schematic structural view of a removable insert according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the plastic molding apparatus according to the embodiment of the present invention after the movable insert is extruded to form the opening.
Fig. 4 is a schematic structural diagram of a plastic material after being extruded to form an opening according to an embodiment of the present invention.
Fig. 5 is a schematic flow chart illustrating a molding method of a plastic part according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a housing according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a plastic part molding apparatus (a movable insert is in an initial state) according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a movable insert according to an embodiment of the present invention, fig. 3 is a schematic structural diagram of a plastic part molding apparatus (a movable insert extrudes a plastic material) according to an embodiment of the present invention, and fig. 4 is a schematic structural diagram of a plastic material (a movable insert is not shown) after an opening is formed by extrusion according to an embodiment of the present invention. The first aspect of the embodiments of the present invention provides a plastic part molding apparatus, which includes a mold 1 and a movable insert 2. Wherein the mould 1 has an inner cavity 11 for filling with the plastic material 3. A removable insert 2 is inserted into the mold 1, the removable insert 2 being adapted to press a predetermined opening position 31 of the plastic material 3 when the plastic material 3 in the cavity 11 of the mold 1 is in a molten state, so as to form an opening 32 at the predetermined opening position 31.
Wherein, the molten state refers to a state that the plastic material is changed from a solid phase to a liquid phase. The initial state of the removable insert 2 refers to the state in which the removable insert 2 has not yet pressed the plastic material 3 in the cavity 11 of the mold 1.
According to the plastic part molding equipment provided by the first aspect of the embodiment of the invention, the movable insert 2 is arranged to extend into the mold 1, so that the movable insert 2 can be used for extruding the plastic material 3 in the inner cavity 11 of the mold 1 when the plastic material 3 in the inner cavity 11 of the mold 1 is in a molten state, and thus, the opening 32 is formed at the preset opening position 31 of the plastic material 3. Adopt movable insert 2 to extrude this plastic material 3 when plastic material 3 is in the molten condition, on the one hand can form this trompil 32 in this plastic part fashioned in-process integratively, on the other hand, because the volume of plastic material 3 in predetermineeing trompil position 31 department is compressed, thereby the local material density of plastic material 3 in trompil 32 department improves, and then can make the plastic part shaping back, the trompil department 32 structural strength of plastic part improves, the condition of the weld line easy fracture of trompil 32 when the atress effectively prevents.
It can be understood that the predetermined opening position 31 of the plastic member can be set according to the position of the actual opening 32, and the predetermined opening position 31 of the plastic member can be one or more, and can be adjusted according to the actual situation.
Referring again to fig. 2 and 3, in some embodiments, in order to enable the removable insert 2 to extend into the mold 1, the mold 1 is provided with a first hole 12 communicated with the inner cavity 11 of the mold 1, and the first hole 12 is used for the removable insert 2 to extend into. In particular, the shape and size of the first bore 12 may be adapted to the shape and size of the removable insert 2. For example, when the removable insert 2 is a long rod, the first hole 12 may be a long hole.
Optionally, the first hole 12 is a stepped hole, comprising a first portion 121 and a second portion 122 connected to the first portion 121. The first portion 121 is disposed close to the inner cavity 12 of the mold 1, and a connection portion between the second portion 122 and the first portion 121 forms a limiting surface 123, where the limiting surface 123 can be used to limit a position of the removable insert 2 extending into the first portion 121, so as to effectively control a stroke of the removable insert 2 extruding the plastic material 3, and further, control a depth of the opening 32 formed in the plastic material 3.
Further, the second portion 122 has a larger bore diameter than the first portion 121, so that the second portion 122 facilitates the insert 2 to extend into, thereby facilitating the smooth movement of the insert 2 with respect to the second portion 122 and the first portion 121.
In some embodiments, the removable insert 2 is removably inserted into the first bore 12 so as to extrude the plastic material 3 to form the opening 32. Specifically, the removable insert 2 includes a first shaft 21 and a second shaft 22, the first shaft 21 extends into the first portion 121, the second shaft 22 has a first end surface 221, the first shaft 21 is connected to the first end surface 221, and the first end surface 221 is used for abutting against the limiting surface 123 to limit the position where the first shaft 21 extends into the first portion 121.
More specifically, the first end surface 221 may be a plane or an inclined surface as long as the first end surface 221 can abut against the limiting surface 123, which is not specifically limited in this embodiment. Correspondingly, the limiting surface 123 may be a plane or an inclined surface, and corresponds to the first end surface 221, which is not limited in this embodiment.
Further, as can be seen from the foregoing, the diameter of the second portion 122 of the first hole 12 is larger than that of the first portion 121, and accordingly, the outer diameter of the second shaft 22 is larger than that of the first shaft 21, and the outer diameter of the first shaft 21 and the diameter of the first portion 121 can be substantially the same, so that the first shaft 21 and the first portion 11 can be tightly fitted during the injection molding process.
Further, the axis of the first shaft 21 coincides with the axis of the first portion 121, so that when the removable insert 2 presses the plastic material 3, the removable insert 2 moves along the axis of the first hole 12 towards the inner cavity 11 of the mold 1 to press the predetermined opening position 31 of the plastic material 3, thereby forming the opening 32. In other words, the shape and size of the opening 32 can be set according to the shape and size of the first shaft 21, for example, the opening 32 can be a regular hole such as a round hole and a square hole, which is not limited in this embodiment.
In addition, if the opening 32 is required to be formed with a chamfer, the chamfer can be formed on the first shaft 21, so that when the first shaft 21 extrudes the plastic material 3 to form the opening 32, the chamfer on the first shaft 21 can be used to form the opening 32 with a chamfer.
In some embodiments, in the initial state, the removable insert 2 extends into the mold 1, at this time, the removable insert 2 does not yet press the predetermined opening position 31 of the plastic material 3, and the end surface of the first shaft 21 facing the inner cavity 11 of the mold 1 is located on the same plane as the plane of the predetermined opening position 31. Thus, when the first shaft 21 moves in the first portion 121 in a direction toward the inner cavity 11 of the mold 1 and presses the plastic material 3 to form the opening 32, the first end surface 221 of the second shaft 22 connected to the first shaft 21 abuts against the limiting surface 123, at this time, the first shaft 21 stops pressing the plastic material 3, and the movement stroke of the first shaft 21 in the first portion 121 determines the hole depth of the opening 32. The hole depth control of the split hole 32 is more accurate and reliable. It is understood that, in other embodiments, in the initial state, the end surface of the first shaft 21 facing the inner cavity 11 of the mold 1 may not be located in the same plane as the plane of the preset hole position 31.
In some embodiments, in order to facilitate control of the movement of the removable insert 2, the plastic part molding apparatus may further include a driving mechanism that may be coupled to the removable insert 2 to control the movement of the removable insert 2 in the first bore 12. Specifically, this actuating mechanism can adopt hydraulic drive mechanism, atmospheric pressure actuating mechanism or CD-ROM drive motor to can select the actuating mechanism of different grade type according to actual demand, improve plastic part former's suitability.
The process of the driving mechanism driving the movable insert 2 to move is briefly described below.
The driving mechanism is configured to drive the first shaft 21 of the movable insert 2 to move in the first portion 121 in a direction toward the cavity 11 when the plastic material 3 in the mold 1 is in a molten state, so that the first shaft 21 can abut against the plastic material 3, and continue to advance under the continuous driving action of the driving mechanism to extrude the plastic material 3, and when the first shaft 21 moves in the first portion 121 until the limiting surface 123 abuts against the first end surface 221, the driving mechanism stops driving the movable insert 2, so that the first shaft 21 stops continuing to advance and extrude the plastic material 3. After the plastic material 3 is cooled, the opening 32 is formed at the predetermined opening position 31 of the plastic material 3.
It is understood that, since the driving mechanism drives the removable insert 2 to move, the moving stroke of the first shaft 21 in the first portion 121 of the first hole 12 can be realized not only by the abutting of the limiting surface 123 and the first end surface 221, but also by controlling the stroke of the driving mechanism driving the removable insert 2.
It should be noted that, in an initial state, that is, when the removable insert 2 is not moved, the first shaft 21 of the removable insert 2 may abut against the predetermined opening position 31 of the plastic material 3 (that is, the end surface of the first shaft 21 facing the inner cavity 11 of the mold 1 is located on the same plane as the predetermined opening position 31), in which case, when the driving mechanism is activated, the first shaft 21 may extrude the plastic material 3. Or, when the removable insert 2 is not moved, the first shaft 21 may not extend into the first portion 121 of the first hole 12 (that is, the end surface of the first shaft 21 facing the inner cavity of the mold 1 may not be located on the same plane as the preset opening position 31), in this case, when the driving mechanism is activated, the first shaft 21 may be moved to abut against the preset opening position 31 of the plastic material 3 in the first portion 121 of the first hole 12, and then, under the continuous driving of the driving mechanism, the first shaft 21 continues to move along the direction of the first portion 121 toward the plastic material 2, so that the first shaft 21 may press the plastic material 3.
In the first aspect of the embodiment of the present invention, a first hole 12 for allowing the movable insert 2 to move is formed in the mold 1, so that the movable insert 2 extends into the mold 1, when the plastic material 3 in the inner cavity 11 of the mold 1 is still in a molten state, the movable insert 2 moves towards the inner cavity 11 of the mold 1 to extrude a preset opening position 31 of the plastic material 3, and an opening 32 is formed at the preset opening position 31. Make fashioned plastic part be because of the volume is extrudeed, improve the local density of trompil 32 department at trompil 32 department to guarantee the structural strength of fashioned plastic part in trompil 32 department, prevent the weld line fracture of trompil 32 department. Meanwhile, the mold 1 enables the plastic part with the open hole 32 to be formed in one step, and the open hole is not needed to be formed through secondary processing, so that the forming process of the plastic part is simplified, and the processing cost of the plastic part is reduced.
Fig. 5 is a schematic flow chart of a plastic part molding method according to an embodiment of the present invention. According to a second aspect of the embodiments of the present invention, a method for forming a plastic part is provided, in which the above-mentioned plastic part forming apparatus is used for forming, so as to obtain a plastic part. The method comprises the following steps:
s1, providing a mold, and filling a plastic material into an inner cavity of the mold.
In this step, the shape of the cavity 11 of the mold 1 can be set according to the shape of the plastic part to be molded. For example, if the molded plastic part is approximately a circular shell, the shape of the cavity 11 may be approximately circular, and if the molded plastic part is approximately a square shell, the shape of the cavity 11 may be approximately square.
S2, maintaining the pressure of the plastic material in the mold.
And S3, when the plastic material in the mold is in a molten state, controlling the movable insert to move so as to extrude the preset hole-opening position of the plastic material, so as to form a hole at the preset hole-opening position.
Specifically, the movable insert 2 may be controlled to move to extrude the predetermined opening position 31 of the plastic material 3 when the plastic material 3 in the mold 1 is in a molten state during the pressure maintaining of the plastic material 3 in the inner cavity 11 or after the pressure maintaining of the plastic material 3 in the inner cavity 11 is completed.
In the above-mentioned preset opening position 31 for controlling the movement of the removable insert 2 to extrude the plastic material 3, the method specifically comprises the following steps:
and S31, providing a driving mechanism, and connecting the driving mechanism with the movable insert.
Specifically, the driving mechanism may employ a hydraulic driving mechanism, a pneumatic driving mechanism, or a driving motor. The driving mechanism has large selectable space and wide application range. For example, when the driving mechanism is a hydraulic driving mechanism, a power cylinder can be selected. The driving mode of the power cylinder is simple and reliable, and the movable insert 2 is convenient to control to move.
S32: and starting the driving mechanism, so that the driving mechanism controls the movable insert to move to extrude the preset hole opening position of the plastic material.
In this embodiment, the injection molding device may further include an injection molding machine, the injection molding machine may set the opening time in advance, when the injection molding time of the plastic material 3 in the inner cavity 11 reaches the preset opening time, the injection molding machine sends a motion signal to the driving mechanism, and when the driving mechanism receives the motion signal, the driving mechanism may drive the movable insert 2 to move, so that the movable insert 2 moves to extrude the preset opening position 31 of the plastic material 3. The adoption sets up the mode of trompil time in order to control actuating mechanism drive movable insert 2 motion on moulding plastics the board, and this control mode is simple, reliable.
It is understood that, for the structure of the mold 1 and the structure of the movable insert 2, reference may be made to the description in the plastic part molding apparatus of the first aspect, and the description is omitted here.
And S4, cooling the plastic material to obtain the plastic part.
Specifically, the plastic material 3 after the opening step and the pressure maintaining step is cooled to obtain a molded plastic part with an opening 32.
In the second embodiment of the present invention, a hot top molding process is adopted in the mold, that is, in the injection molding process, when the filled plastic material 3 is still in a molten state, the movable insert 2 is controlled to extrude the preset opening position 31, and then the plastic material 3 is cooled and demolded to obtain the plastic part with the opening 32. According to the plastic part obtained by the method, in the molding process, the opening 32 of the plastic part extrudes the plastic material 3 due to the movable insert 2, so that the volume of the plastic material 3 at the preset opening position 31 is extruded, the local density of the plastic material 2 at the preset opening position 31 can be improved, the structural strength of the plastic material 3 after the opening at the preset opening position 31 is ensured, and the cracking at the welding line of the opening 32 is prevented. Meanwhile, the movable insert 2 extrudes the plastic material 3 to form the open hole 32, so that the open hole 32 is not required to be obtained through secondary processing, the molding process of the plastic part is effectively simplified, and the processing cost of the plastic part is reduced.
Referring to fig. 6, a third aspect of the embodiment of the invention discloses a housing 4, wherein the housing 4 is obtained by molding the plastic part. That is, the above-mentioned openings 32 may be formed in the housing 4, and the number and shape of the openings 32 may be set according to actual requirements. For example, when the housing 4 is used as a housing of an electronic device (e.g., a smart watch, a smart bracelet, a mobile phone, etc.), taking the smart watch as an example, since the smart watch further includes a watchband, the housing 4 generally needs to be connected with the watchband through a rotating shaft, and then the opening 32 is formed on two opposite sides of the housing 4 at this time, and is set as a shaft hole for passing through the rotating shaft connected with the watchband.
Referring to fig. 7, a fourth aspect of the embodiment of the invention further provides an electronic device 5, which includes the housing 4. The electronic device can be, but is not limited to, a smart wearable device (such as a smart watch, a smart bracelet, smart glasses, etc.), a mobile terminal (such as a mobile phone, a tablet, etc.), and the housing 4 can serve as a casing of the electronic device.
The plastic part forming method, the plastic part forming apparatus, the housing and the electronic apparatus disclosed in the embodiments of the present invention are described in detail above, and the principle and the embodiments of the present invention are explained herein by applying specific examples, and the description of the embodiments above is only used to help understanding the plastic part forming method, the plastic part forming apparatus, the housing, the electronic apparatus and the core ideas thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A method for forming a plastic part is characterized by comprising the following steps:
providing a mould, and filling a plastic material in an inner cavity of the mould;
maintaining the pressure of the plastic material in the mold;
when the plastic material in the mold is in a molten state, controlling the movable insert to move so as to extrude a preset hole-opening position of the plastic material, so as to form a hole at the preset hole-opening position;
and cooling the plastic material to obtain the plastic part.
2. The method as claimed in claim 1, wherein the controlling the moving insert to press the predetermined opening position of the plastic material comprises:
providing a driving mechanism, and connecting the driving mechanism with the movable insert;
and starting the driving mechanism, so that the driving mechanism controls the movable insert to move to extrude the preset hole opening position of the plastic material.
3. The method for forming a plastic part according to claim 2,
the driving mechanism comprises a hydraulic driving mechanism, a pneumatic driving mechanism or a driving motor.
4. The method for forming the plastic part according to claim 1, wherein the mold is provided with a first hole communicated with an inner cavity of the mold, and the first hole is used for the movable insert to extend into.
5. The method of claim 4, wherein the first hole is a stepped hole and comprises a first portion and a second portion connected to the first portion, the first portion is disposed near the inner cavity of the mold, and a connection portion of the second portion and the first portion forms a limiting surface;
the movable insert comprises a first shaft body and a second shaft body, the first shaft body extends into the first portion, the second shaft body is provided with a first end face, the first end face is connected with the first shaft body, and the first end face is used for being abutted to the limiting face so as to limit the position of the first shaft body extending into the first portion.
6. The utility model provides a plastic part former which characterized in that, plastic part former includes:
a mold having an interior cavity for filling with a plastic material; and
the movable insert extends into the mold and is used for extruding the preset hole forming position of the plastic material when the plastic material in the inner cavity is in a molten state, so that a hole is formed at the preset hole forming position.
7. The apparatus as claimed in claim 6, wherein the mold has a first hole communicating with the cavity of the mold, the first hole being for the insert to extend into.
8. The apparatus of claim 7, wherein the first hole is a stepped hole and includes a first portion and a second portion connected to the first portion, the first portion is disposed adjacent to the cavity of the mold, and a junction of the second portion and the first portion forms a stopper surface;
the movable insert comprises a first shaft body and a second shaft body, the first shaft body extends into the first part, the second shaft body is provided with a first end face, the first end face is connected with the first shaft body, and the first end face is used for limiting the position of the first shaft body extending into the first part.
9. A housing formed by the method of forming a plastic part according to any one of claims 1 to 5.
10. An electronic device characterized in that it comprises a housing as claimed in claim 9.
CN202110601993.8A 2021-05-31 2021-05-31 Plastic part forming method, plastic part forming equipment, shell and electronic equipment Pending CN115476461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110601993.8A CN115476461A (en) 2021-05-31 2021-05-31 Plastic part forming method, plastic part forming equipment, shell and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110601993.8A CN115476461A (en) 2021-05-31 2021-05-31 Plastic part forming method, plastic part forming equipment, shell and electronic equipment

Publications (1)

Publication Number Publication Date
CN115476461A true CN115476461A (en) 2022-12-16

Family

ID=84419604

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110601993.8A Pending CN115476461A (en) 2021-05-31 2021-05-31 Plastic part forming method, plastic part forming equipment, shell and electronic equipment

Country Status (1)

Country Link
CN (1) CN115476461A (en)

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