Injection molding mold

Abstract

The utility model provides an injection molding mold which comprises a first mold plate used for bearing a part to be subjected to injection molding; the second mold plate reciprocates relative to the first mold plate in the first direction, and an elastic abutting mechanism is arranged on the lower end face of the second mold plate; the positioning mechanism comprises a first sliding block and a second sliding block, the first sliding block is provided with a first positioning cavity, the second sliding block is provided with a second positioning cavity, the first sliding block and the second sliding block can slide relative to the first mold plate in the second direction, and when the first sliding block and the second sliding block are folded, the first positioning cavity and the second positioning cavity are communicated and form a machining positioning cavity; and after the elastic abutting mechanism abuts against the to-be-injection-molded part, the first sliding block and the second sliding block are separated, the second mold plate is completely closed, injection molding of the to-be-injection-molded part is started, and the injection-molded part is obtained. According to the injection molding device, injection molding automation is achieved, and the injection molding efficiency is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and in particular to an injection molding mold. Background Art

[0002] The acoustic mesh is an important part of the earphone, which is used to prevent dust, dirt and other external impurities from entering the earphone, and at the same time, ensure the normal transmission of sound. In the production process, in order to improve the connection firmness between the acoustic mesh and the earphone and the stability of the overall structure, the acoustic mesh and the plastic frame are usually formed in one piece. In the prior art, the plastic frame is generally formed around the acoustic mesh by insert injection molding.

[0003] During the insert injection molding process of forming a plastic frame around the periphery of the acoustic net, suction holes are usually set in the injection mold to position the acoustic net by adsorption. Since the suction holes have little suction force on the acoustic net, the position of the acoustic net in the injection mold is prone to movement, causing the acoustic net to deviate from the correct position, and then causing the plastic frame on the acoustic net to deviate from the correct position, resulting in the finished plastic product being unqualified or even becoming waste, reducing product quality and increasing the scrap rate. In addition, the suction holes have a high risk of being blocked, and the positioning efficiency of the acoustic net is low, which is not suitable for mass production. Utility Model Content

[0004] In view of the above, the present application provides an injection molding mold to solve the technical problem in the existing injection molding process that the position of the acoustic net in the injection mold is easy to move, resulting in the manufactured plastic parts being unqualified or even becoming scrap, thereby reducing the quality of the parts and increasing the scrap rate.

[0005] The embodiment of the present application provides an injection molding mold, comprising: a first template for carrying a part to be injected; a second template movably connected to the first template, the second template reciprocating relative to the first template in a first direction to complete the action of closing and opening the mold, the lower end surface of the second template is provided with an elastic pressing mechanism; a positioning mechanism, comprising a first slider and a second slider, the first slider and the second slider are arranged in the first template and located between the first template and the second template, the first slider is provided with a first positioning cavity, the second slider is provided with a second positioning cavity, the first slider and the second slider can slide relative to the first template along the second direction, when When the first slider and the second slider are closed, the first positioning cavity and the second positioning cavity are connected to form a processing positioning cavity. The position of the elastic pressing mechanism corresponds to the position of the processing positioning cavity. When the second template is in an open mold state, the processing positioning cavity can position the part to be injected on the first template. When the second template starts to close the mold, the elastic pressing mechanism is inserted into the processing positioning cavity and presses the part to be injected. After the elastic pressing mechanism presses the part to be injected, the first slider and the second slider are separated, so that the second template is completely closed to start injection molding of the part to be injected to obtain the injection molded part.

[0006] In one embodiment, the elastic pressing mechanism includes: a pressing member including a first end and a second end, the second end being inserted into the processing positioning cavity; an elastic member accommodated in the first end, the first end and the second template being connected through the elastic member.

[0007] In one embodiment, the pressing member can be replaced according to the shape of the through hole required for the part to be injection molded.

[0008] In one embodiment, the positioning mechanism also includes: a first driving member, which is disposed on the first template and connected to the first slider, and the first driving member is used to drive the first slider to slide relative to the first template along the second direction; a second driving member, which is disposed on the first template and connected to the second slider, and the second driving member is used to drive the second slider to slide relative to the first template along the second direction.

[0009] In one embodiment, when the part to be injected is placed in the processing positioning cavity, a gap of a preset distance is reserved between the first slider and the second slider.

[0010] In one embodiment, the preset distance is 0.03 mm.

[0011] In one embodiment, an ejection mechanism is disposed inside the first template, and the ejection mechanism is used to eject the injection molded part from the first template.

[0012] In one embodiment, the ejection mechanism includes: an ejector pin, which is used to support the injection molded part; and an ejector plate, which is connected to the ejector pin and is used to drive the ejector pin to perform lifting motion relative to the first template.

[0013] In one embodiment, the first template is provided with a plurality of guide columns, and the second template is provided with a plurality of guide sleeves, and the guide columns are inserted into corresponding guide sleeves, so that the second template can be movably connected with the first template.

[0014] In one embodiment, the first direction and the second direction are perpendicular to each other.

[0015] In the injection molding mold of the present application, first, when the second template is in the mold opening state, the first slider and the second slider are closed, so that the first positioning cavity and the second positioning cavity are connected and form a processing positioning cavity, and the part to be injected is placed in the processing positioning cavity, and then the part to be injected is positioned on the first template through the processing positioning cavity, and further, when the second template begins to close the mold, the elastic pressing mechanism is inserted into the processing positioning cavity and presses the part to be injected, and further the first slider and the second slider are separated, so that the second template is completely closed to start the injection molding of the part to be injected. Based on this, during the injection molding process, the part to be injected can be reliably positioned in the injection molding mold, which improves the quality of the parts after injection molding, effectively reduces the scrap rate, and is beneficial to the assembly problem of electronic components in the later stage. In addition, the positioning of the part to be injected is completely achieved by the mold structure, and the positioning efficiency is high, the practicability is strong, and it is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an injection molding die provided in one embodiment of the present application.

[0017] Figure 2 for Figure 1 A partial structural schematic diagram of the positioning mechanism shown.

[0018] Figure 3 for Figure 2 The cross-sectional structural diagram of the positioning mechanism along AA is shown.

[0019] Figure 4 for Figure 1 The shown is a schematic diagram of a cross-sectional structure of the injection molding mold along line BB.

[0020] Figure 5 for Figure 1 The shown is another schematic diagram of the cross-sectional structure of the injection molding mold along line BB.

[0021] Figure 6 for Figure 1 The shown is another schematic diagram of the cross-sectional structure of the injection molding mold along line BB.

[0022] Figure 7 for Figure 1 The shown is another schematic diagram of the cross-sectional structure of the injection molding mold along line BB.

[0023] Figure 8 for Figure 1 The cross-sectional structure diagram of the elastic pressing mechanism along line BB is shown.

[0024] Main component symbols

[0025] Injection molding mold 100

[0026] First template 10

[0027] Ejector mechanism 11

[0028] Ejector 111

[0029] Top plate 112

[0030] Guide column 12

[0031] Second template 20

[0032] Elastic pressing mechanism 21

[0033] Pressing member 22

[0034] First End 221

[0035] Second end 222

[0036] Elastic member 23

[0037] Positioning mechanism 30

[0038] The first slider 31

[0039] The first positioning cavity 311

[0040] Groove 312

[0041] Second slider 32

[0042] The second positioning cavity 321

[0043] Bump 322

[0044] Processing positioning cavity 33

[0045] The first driving member 34

[0046] Second driving member 35

[0047] Part 40

[0048] First direction Z

[0049] Second direction X DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0051] In the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, words such as "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" is intended to present related concepts in a specific way.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In the description of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, in the description of the present application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically limited.

[0054] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0055] In the existing insert injection molding process of forming a plastic frame on the periphery of the acoustic net, suction holes are usually set in the injection mold to position the acoustic net by adsorption through the suction holes. Since the suction holes have little suction force on the acoustic net, the position of the acoustic net in the injection mold is easy to move, causing the acoustic net to deviate from the correct position, and then causing the plastic frame formed on the acoustic net to deviate from the correct position, resulting in the finished plastic product being unqualified or even becoming waste, reducing product quality and increasing the scrap rate. In addition, the risk of clogging the suction holes is high, the positioning efficiency of the acoustic net is low, and it is not mass-producible.

[0056] In view of this, the present application provides an injection molding mold to solve the technical problem in the existing injection molding process that the position of the acoustic net in the injection mold is easy to move, resulting in unqualified plastic products or even becoming waste, reducing product quality and increasing the scrap rate.

[0057] See also Figure 1 , is a schematic structural diagram of an injection molding die 100 provided in an embodiment of the present application.

[0058] Specifically, the injection molding die 100 includes a first mold plate 10, a second mold plate 20, and a positioning mechanism 30. Figure 2 As shown, the first template 10 is used to carry the part 40 to be injected. The second template 20 is movably connected to the first template 10, and the second template 20 reciprocates relative to the first template 10 in the first direction Z to complete the action of closing and opening the mold. The lower end surface of the second template 20 is provided with an elastic pressing mechanism 21. Figure 2 As shown, the positioning mechanism 30 includes a first slider 31 and a second slider 32. The first slider 31 and the second slider 32 are disposed on the first template 10 and between the first template 10 and the second template 20. Figure 3 As shown, the first slider 31 is provided with a first positioning cavity 311, and the second slider 32 is provided with a second positioning cavity 321. The first slider 31 and the second slider 32 can slide relative to the first template 10 along the second direction X. When the first slider 31 and the second slider 32 are closed, the first positioning cavity 311 and the second positioning cavity 321 are connected to form a processing positioning cavity 33. The position of the elastic pressing mechanism 21 corresponds to the position of the processing positioning cavity 33, and the shape of the processing positioning cavity 33 is adapted to the shape of the part 40 to be injected. Figure 4 As shown, when the second template 20 is in the mold opening state, the part 40 to be molded is placed into the processing positioning cavity 33, and then the part 40 to be molded is positioned on the first template 10 through the processing positioning cavity 33. Figure 5 As shown, when the second mold plate 20 begins to close the mold, the elastic pressing mechanism 21 is inserted into the processing positioning cavity 33 and presses the part 40 to be injected. Figure 6As shown, after the elastic pressing mechanism 21 presses the part 40 to be injected, the first slider 31 and the second slider 32 separate, so that the second template 20 is completely molded to start injection molding of the part 40 to be injected, and obtain the injection-molded part 40.

[0059] In one embodiment, the part 40 to be injection molded may be an acoustic mesh.

[0060] In one embodiment, the first direction Z and the second direction X are perpendicular to each other.

[0061] In the above embodiment, first, when the second template 20 is in the mold opening state, the first slider 31 and the second slider 32 are closed, so that the first positioning cavity 311 and the second positioning cavity 321 are connected to form a processing positioning cavity 33, and the part 40 to be injected is placed in the processing positioning cavity 33, and then the part 40 to be injected is positioned on the first template 10 through the processing positioning cavity 33. Further, when the second template 20 begins to close the mold, the elastic pressing mechanism 21 is inserted into the processing positioning cavity 33 and presses the part 40 to be injected. Further, the first slider 31 and the second slider 32 are separated, so that the second template 20 is completely closed to start the injection molding of the part 40 to be injected. Based on this, during the injection molding process, the part 40 to be injected can be reliably positioned in the injection molding mold 100, which improves the quality of the part 40 after injection molding, effectively reduces the scrap rate, and is beneficial to the assembly of electronic components in the later stage. In addition, the positioning of the part 40 to be injected is completely achieved by the mold structure, with high positioning efficiency and strong practicality, which is suitable for mass production.

[0062] Combination Figure 7 As shown, in one embodiment, an ejection mechanism 11 is disposed inside the first template 10 , and the ejection mechanism 11 is used to eject the injection molded part 40 from the first template 10 .

[0063] In one embodiment, the ejection mechanism 11 includes an ejector pin 111 and an ejector plate 112. The ejector pin 111 is used to support the injection molded part 40. The ejector plate 112 is connected to the ejector pin 111, and the ejector plate 112 is used to drive the ejector pin 111 to move up and down relative to the first template 10 to eject the injection molded part 40 from the first template 10.

[0064] In the above embodiment, after the part 40 is injection molded, the first template 10 and the second template 20 are separated, and the ejector plate 112 extends upward, driving the ejector pin 111 to move upward together, so that the ejector pin 111 ejects the injection molded part 40, and the injection molded part 40 is removed manually or mechanically for the next round of injection molding, thereby realizing cyclic production.

[0065] Combination Figure 5-Figure 8As shown, in one embodiment, the elastic pressing mechanism 21 includes a pressing member 22 and an elastic member 23. The pressing member 22 includes a first end 221 and a second end 222. The second end 222 can be inserted into the processing positioning cavity 33. The elastic member 23 is accommodated in the first end 221. The first end 221 is connected to the second template 20 through the elastic member 23.

[0066] In one embodiment, the elastic member 23 may be a compression spring.

[0067] In one embodiment, the pressing member 22 can be replaced according to the shape of the through hole required for the part 40 to be injected.

[0068] In the above embodiment, the part 40 to be molded is to be manufactured by the injection molding process, and may need to have a through hole at a specific position. The pressing member 22 is a component used to help form the through hole during the manufacturing or processing process. Therefore, when the part 40 to be molded requires a through hole of a different shape or size, it can be achieved by replacing the pressing member 22, thereby improving the flexibility and efficiency of manufacturing.

[0069] In the above embodiment, the pressing member 22 is connected to the second template 20 through the elastic member 23, so that when the second template 20 starts to close the mold and the first slider 31 and the second slider 32 are not retracted, the pressing member 22 can be accurately pressed against the part to be injected 40 to fix the part to be injected 40, ensuring that the relative positions of the various components will not change during the injection molding process, thereby ensuring the dimensional accuracy and quality stability of the part 40 after injection molding. In addition, the elastic member 23 has a certain elasticity, which can adjust the gap and matching relationship between the various components in the injection molding mold 100, thereby reducing the defects and defective rate of the part 40 after injection molding, improving the overall quality of the part 40 after injection molding, and can also adapt to the molding requirements of different materials and processes, and improve the versatility and flexibility of the injection molding mold 100.

[0070] Combination Figure 3 As shown, in one embodiment, the positioning mechanism 30 further includes a first driving member 34 and a second driving member 35. The first driving member 34 is disposed on the first template 10 and connected to the first slider 31. The first driving member 34 is used to drive the first slider 31 to slide relative to the first template 10 along the second direction X. The second driving member 35 is disposed on the first template 10 and connected to the second slider 32. The second driving member 35 is used to drive the second slider 32 to slide relative to the first template 10 along the second direction X.

[0071] In one embodiment, the first driving member 34 and the second driving member 35 may both be driving cylinders.

[0072] In the above embodiment, the first driving member 34 drives the first slider 31 to slide, and the second driving member 35 drives the second slider 32 to slide, so that the speed, stroke and position of the first slider 31 and the second slider 32 can be accurately controlled, thereby ensuring the stability of the movement of the first slider 31 and the second slider 32.

[0073] In one embodiment, the first template 10 is provided with a plurality of guide pillars 12, and the second template 20 is provided with a plurality of guide sleeves (not shown). The guide pillars 12 can be inserted into corresponding guide sleeves so that the second template 20 can be movably connected with the first template 10, thereby guiding the second template 20 and ensuring that the second template 20 reciprocates relative to the first template 10 in the first direction Z.

[0074] Combination Figure 2 As shown, in one embodiment, when the part 40 to be injected is placed in the processing positioning cavity 33 , a gap of a preset distance is reserved between the first slider 31 and the second slider 32 .

[0075] In one embodiment, the preset distance is 0.03 mm.

[0076] In the above embodiment, by reserving a gap between the part 40 to be injected and the first slider 31 and the second slider 32 , it is possible to ensure that the part 40 to be injected passes through the processing positioning cavity 33 and falls into the first template 10 to avoid displacement.

[0077] In one embodiment, a groove 312 is provided on one side of the first slider 31 that is in contact with the second slider 32, and a protrusion 322 is provided on one side of the second slider 32 that is in contact with the first slider 31. The shape of the groove 312 matches the shape of the protrusion 322. When the protrusion 322 is fully inserted into the groove 312, the first slider 31 and the second slider 32 are completely closed.

[0078] In the above embodiment, the first slider 31 and the second slider 32 are limited by cooperating with the protrusion 322 and the groove 312, ensuring that when the first slider 31 and the second slider 32 are closed, the first positioning cavity 311 and the second positioning cavity 321 can completely correspond to each other, thereby improving the reliability of positioning the injection molded part 40.

[0079] In the present application, the number of the first sliding block 31 , the second sliding block 32 , the first positioning cavity 311 , the second positioning cavity 321 , and the elastic pressing mechanism 21 may be determined according to actual conditions, and the number may be one or more respectively.

[0080] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. An injection molding mold, characterized in that: include: A first template, used to carry the parts to be injected; a second template, movably connected to the first template, the second template reciprocatingly moves relative to the first template in a first direction to complete the action of mold closing and mold opening, and a lower end surface of the second template is provided with an elastic pressing mechanism; The positioning mechanism includes a first slider and a second slider, the first slider and the second slider are arranged on the first template and located between the first template and the second template, the first slider is provided with a first positioning cavity, and the second slider is provided with a second positioning cavity, the first slider and the second slider can slide relative to the first template along a second direction, when the first slider and the second slider are closed, the first positioning cavity and the second positioning cavity are connected and form a processing positioning cavity, the position of the elastic pressing mechanism corresponds to the position of the processing positioning cavity, when the second template is in an open mold state, the processing positioning cavity can position the part to be injected on the first template, when the second template starts to close the mold, the elastic pressing mechanism is inserted into the processing positioning cavity and presses the part to be injected, after the elastic pressing mechanism presses the part to be injected, the first slider and the second slider are separated, so that the second template is completely closed to start injection molding of the part to be injected to obtain the injection molded part.

2. The injection molding die according to claim 1, characterized in that: The elastic pressing mechanism comprises: A pressing member, comprising a first end and a second end, wherein the second end is inserted into the processing positioning cavity; An elastic member is accommodated in the first end, and the first end is connected to the second template through the elastic member.

3. The injection molding die according to claim 2, characterized in that: The pressing member can be replaced according to the shape of the through hole required by the injection-molded part.

4. The injection molding die according to claim 1, characterized in that: The positioning mechanism also includes: a first driving member, disposed on the first template and connected to the first slider, the first driving member being used to drive the first slider to slide relative to the first template along the second direction; The second driving member is arranged on the first template and connected to the second sliding block, and the second driving member is used for driving the second sliding block to slide relative to the first template along the second direction.

5. The injection molding die according to claim 1, wherein: When the part to be injected is placed in the processing positioning cavity, a gap of a preset distance is reserved between the first sliding block and the second sliding block.

6. The injection molding die according to claim 5, characterized in that: The preset distance is 0.03 mm.

7. The injection molding die according to claim 1, wherein: An ejection mechanism is disposed inside the first template, and the ejection mechanism is used to eject the injection-molded part from the first template.

8. The injection molding die according to claim 7, characterized in that: The ejection mechanism comprises: Ejector pins, used to support the injection molded parts; A top plate is connected to the top pin and is used to drive the top pin to perform lifting motion relative to the first template.

9. The injection molding die according to claim 1, wherein: The first template is provided with a plurality of guide posts, and the second template is provided with a plurality of guide sleeves. The guide posts are inserted into corresponding guide sleeves, so that the second template can be movably connected with the first template.

10. The injection molding die according to claim 1, wherein: The first direction and the second direction are perpendicular to each other.

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