Forming die for mobile phone middle frame decoration ring

Abstract

The utility model discloses a forming die of a mobile phone middle frame decorative ring. A front die is provided with a front die core, the front die core is provided with a stripper plate, a rear die is provided with a rear die core, the rear die core is provided with a forming plate, the outer contour of the stripper plate is matched with the inner wall of the mobile phone middle frame decorative ring, the front die core is provided with a first clearance part and a first air channel, and the forming plate is provided with a second air channel. And a second clearance part and a runner are arranged on the rear mold core. According to the utility model, the molding plate is embedded on the rear mold core, the stripper plate is embedded on the front mold core, and the first clearance part, the second clearance part and the first groove are respectively arranged at the intersections of the rear mold core and the front mold core during mold closing, so that a molding cavity can be formed by matching during mold closing, and each structural part is relatively convenient to process; by arranging the protrusion, the receding groove, the third air channel, the first air channel, the second air channel, the first vent hole and the second vent hole, it can be ensured that gas is filled around a plastic product during mold opening, the plastic product cannot be pressed against a mold by air pressure difference, the probability that the product is damaged or deformed during demolding is reduced, and the yield is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a molding mold for a mobile phone middle frame decorative ring. Background Art

[0002] The plastic decorative ring on the mobile phone middle frame is a commonly used part on mobile phones, mainly for decoration and accurate covering of internal structural parts. In the molding production, because the wall thickness of the decorative ring is thin but the overall outline is relatively large, it is easy to deform or break during demolding, making it difficult for the decorative ring to completely fit the mobile phone middle frame or completely cover the structural parts during assembly, resulting in some appearance or even functional defects. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a molding mold for a mobile phone middle frame decorative ring. When the mold is closed, the molding plate, the nozzle plate, the front mold core and the rear mold core cooperate to form a molding cavity, and can ensure that gas is filled around the plastic product when the mold is opened, thereby reducing the chance of the product being damaged or deformed during demolding and improving the yield rate.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A forming mold for a mobile phone middle frame decorative ring, comprising a front mold and a rear mold, wherein the rear mold is provided with an ejector plate drivingly connected to a driving device, and the ejector plate is provided with a plurality of ejectors extending along a mold opening direction; the front mold is provided with a front mold core, and a sprue plate is embedded in the front mold core; the rear mold is provided with a rear mold core adapted to the front mold core, and an annular forming plate is embedded in the rear mold core; wherein:

[0006] The outer contour of the nozzle plate is adapted to the inner wall of the mobile phone middle frame decorative ring, and a main flow channel is arranged in the middle of the nozzle plate;

[0007] A first air avoidance portion is provided on the side wall of the front mold core facing the nozzle plate, and an annular first air passage is provided on the end of the front mold core facing the rear mold at the periphery of the first air avoidance portion;

[0008] The cross-section of the rear mold core is a "mountain"-shaped structure, on which the forming plate is matched and embedded, and the forming plate is provided with a second air duct matching the first air duct; a second air avoidance portion is provided on the side wall of the rear mold core close to the inner wall of the forming plate, and a plurality of branch channels are provided on the end of the rear mold core beside the second air avoidance portion, and one end of each of the branch channels is connected to the second air avoidance portion, and the other end is connected to a glue inlet; when the mold is closed, the first air avoidance portion, the second air avoidance portion, the front mold core, and the forming plate jointly enclose a forming cavity adapted to the decorative ring of the middle frame of the mobile phone, and the first air duct is connected to the second air duct.

[0009] As a further elaboration of the above technical solution:

[0010] In the above technical solution, a plurality of inclined third air channels are provided on the front mold core between the first air avoidance portion and the first air channel, and one end portion of each of the third air channels is connected to the first air channel.

[0011] In the above technical solution, the gate plate is provided with a through groove adapted to the main channel, the end of the gate plate facing the rear mold is provided with a first annular groove extending along its contour, and the gate plate is provided with a plurality of inclined protrusions on the inner side of the first groove.

[0012] In the above technical solution, the inner wall of the forming plate is provided with one or more second grooves extending along the contour thereof, and the forming plate is provided with a plurality of first ventilation holes connected with the second air passage.

[0013] In the above technical solution, the rear mold core is provided with a slot adapted to the forming plate, and a plurality of second vent holes are provided at the bottom of the slot, and each of the second vent holes is connected to the exhaust channel on the rear mold; a convex plate adapted to the sprue plate is formed on the inner side of the slot on the rear mold core, and the glue inlet and a plurality of the branch channels are provided on the convex plate, and a plurality of avoidance grooves adapted to the protrusions are provided at the end of each of the branch channels, and each of the branch channels is provided with at least one first ejector hole adapted to the ejector one by one on the side of each avoidance groove.

[0014] In the above technical solution, the rear mold core is further provided with a plurality of second ejector holes on the outer side of the branch channel, which are matched one by one with the ejector pins. A connecting groove is provided at the end of each of the second ejector holes, and each of the connecting grooves is connected with the second air avoidance portion.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: by embedding a molding plate on the rear mold core and a sprue plate on the front mold core, and respectively arranging a first avoidance portion, a second avoidance portion, and a first groove at the intersection when the molds are closed, a molding cavity can be formed in cooperation when the molds are closed, and the processing of each structural part is relatively convenient; by arranging protrusions, avoidance grooves, a third air channel, a first air channel, a second air channel, a first vent hole, and a second vent hole, it is possible to ensure that gas is filled around the plastic product when the mold is opened, and the plastic product will not be pressed against the mold by the air pressure difference, thereby reducing the chance of the product being damaged or deformed when demolding, and improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the decomposed structure of this embodiment;

[0017] Figure 2 It is a schematic cross-sectional view of the structure of the embodiment when the mold is closed;

[0018] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0019] Figure 4 It is a structural schematic diagram of the front mold core in this embodiment;

[0020] Figure 5 Schematic diagram of the structure of the nozzle plate in this embodiment.

[0021] Figure 6 Schematic diagram of the structure of the rear mold core in this embodiment;

[0022] Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of the middle B part;

[0023] Figure 8 Schematic diagram of the structure of the forming plate in this embodiment.

[0024] In the figure: 10, front mold core; 11, first avoidance portion; 12, first air channel; 13, third air channel; 20, sprue plate; 21, main channel; 22, first groove; 23, protrusion; 30, rear mold core; 31, second avoidance portion; 32, branch channel; 33, glue inlet; 34, slot; 35, second vent; 36, convex plate; 37, avoidance groove; 38a, first ejector pin hole; 38b, second ejector pin hole; 39, connecting groove; 40, molding plate; 41, second air channel; 42, second groove; 43, first vent. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, 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 the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the 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. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] like Figure 1-3 As shown, a forming mold for a mobile phone middle frame decorative ring comprises a front mold and a rear mold, wherein the rear mold is provided with an ejector plate drivingly connected to a driving device, and the ejector plate is provided with a plurality of ejectors extending along a mold opening direction; the front mold is provided with a front mold core 10, and a sprue plate 20 is embedded in the front mold core 10; the rear mold is provided with a rear mold core 30 adapted to the front mold core 10, and an annular forming plate 40 is embedded in the rear mold core 30; wherein:

[0028] The outer contour of the nozzle plate 20 is adapted to the inner wall of the mobile phone middle frame decorative ring, and a main flow channel 21 is provided in the middle of the nozzle plate 20;

[0029] A first avoidance portion 11 is provided on the side wall of the front mold core 10 facing the gate plate 20, and an annular first air passage 12 is provided on the end of the front mold core 10 facing the rear mold at the periphery of the first avoidance portion 11;

[0030] The cross section of the rear mold core 30 is a "mountain"-shaped structure, on which a molding plate 40 is matched and embedded, and a second air duct 41 matching the first air duct 12 is provided on the molding plate 40; a second air avoidance portion 31 is provided on the side wall of the rear mold core 30 close to the inner wall of the molding plate 40, and a plurality of branch channels 32 are provided at the end of the rear mold core 30 beside the second air avoidance portion 31, and one end of each branch channel 32 is connected to the second air avoidance portion 31, and the other end is connected to a glue inlet 33; when the mold is closed, the first air avoidance portion 11, the second air avoidance portion 31, the front mold core 10, and the molding plate 40 jointly enclose a molding cavity adapted to the decorative ring of the middle frame of the mobile phone, and the first air duct 12 is connected to the second air duct 41.

[0031] Specifically, Figure 4 As shown, a plurality of inclined third air passages 13 are provided on the front mold core 10 between the first avoidance portion 11 and the first air passage 12 , and one end of each third air passage 13 is connected to the first air passage 12 .

[0032] Specifically, Figure 5 As shown, the gate plate 20 is provided with a through groove adapted to the main channel 21 , and the end of the gate plate 20 facing the rear mold is provided with an annular first groove 22 extending along its contour, and the gate plate 20 is provided with a plurality of inclined protrusions 23 on the inner side of the first groove 22 .

[0033] Specifically, Figure 6-7 As shown, the rear mold core 30 is provided with a slot 34 adapted to the molding plate 40, and a plurality of second vent holes 35 are provided at the bottom of the slot 34, and each of the second vent holes 35 is connected to the exhaust channel on the rear mold; a convex plate 36 adapted to the sprue plate 20 is formed on the inner side of the slot 34 on the rear mold core 30, and a glue inlet 33 and a plurality of branch channels 32 are provided on the convex plate 36, and a plurality of avoidance grooves 37 adapted to the protrusions 23 are provided at the end of each branch channel 32, and each branch channel 32 is provided with more than one first ejector hole 38a adapted to the ejector one by one on the side of each avoidance groove 37; the rear mold core 30 is also provided with a plurality of second ejector holes 38b adapted to the ejector one by one on the outer side of the branch channel 32, and a connecting groove 39 is provided at the end of each second ejector hole 38b, and each connecting groove 39 is connected to the second avoidance portion 31.

[0034] Specifically, Figure 8 As shown, the inner wall of the forming plate 40 is provided with one or more second grooves 42 extending along the contour thereof, and the forming plate 40 is provided with a plurality of first vent holes 43 communicating with the second air passage 41 .

[0035] The composition structure and connection relationship of the front mold and the rear mold are common knowledge of technicians in this field and will not be elaborated here.

[0036] When the mold is closed, the rear mold drives the rear mold core 30 and the forming plate 40 thereon to approach the front mold and make the rear mold core 30 and the front mold core 10, the convex plate 36 and the nozzle plate 20 fit together, and the forming plate 40 is also completely pressed against the groove 34; at this time, if Figure 2 , 3 As shown, the first avoidance portion 11 on the front mold core 10, the end and the top of the inner wall on the molding plate 40, the second avoidance portion 31 on the edge of the convex plate 36 on the rear mold core 30, and the first groove 22 on the gate plate 20 together enclose a molding cavity of an annular structure. After completion, the glue flows into the glue inlet 33 through the main channel 21, and flows into different positions of the molding cavity through a plurality of branch channels 32. The gas in the molding cavity is squeezed into the first gas channel 12 through the third gas channel 13 on the front mold core 10, and is discharged into the exhaust channel of the rear mold through the second gas channel 41 on the molding plate 40, the first vent 43 and the second vent 35 on the rear mold core 30, ensuring that the glue can completely fill the molding cavity. After completion, the mold is opened, and the rear mold core 30 and the molding plate 40 follow the mold and leave the front mold together. Some ejectors pass through the second ejector holes 38b to push the protrusions 23 on the sprue plate 20 out of the avoidance grooves 37 on the protruding plate 36. At this time, the air flows into the second avoidance portion 31, the connecting grooves 39 and the first ejector holes 38a through the avoidance grooves 37, and then flows into the second grooves 42 on the molding plate 40 to ensure the smooth flow of the airway and avoid the formation of a vacuum between the plastic product and the lower mold. At the same time, some other ejectors pass through the first ejector holes 38a to hold the sprue of the plastic product and lift it from the lower mold.

[0037] The utility model embeds a molding plate 40 on the rear mold core 30, embeds a sprue plate 20 on the front mold core 10, and respectively arranges a first avoidance portion 11, a second avoidance portion 31, and a first groove 22 at the intersections when the molds are closed, so that a molding cavity can be formed when the molds are closed, and the processing of each structural component is relatively convenient; by arranging a protrusion 23, an avoidance groove 37, a third air channel 13, a first air channel 12, a second air channel 41, a first vent hole 43, and a second vent hole 35, it can be ensured that gas is filled around the plastic product when the mold is opened, and the plastic product will not be pressed against the mold by the air pressure difference, thereby reducing the probability of the product being damaged or deformed when demolding, and improving the yield rate.

[0038] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A molding die for a mobile phone middle frame decorative ring, comprising a front die and a rear die, wherein the rear die is provided with an ejector plate drivingly connected to a driving device, and the ejector plate is provided with a plurality of ejectors extending along a mold opening direction; characterized in that: The front mold is provided with a front mold core, a nozzle plate is embedded in the front mold core, the rear mold is provided with a rear mold core adapted to the front mold core, and an annular forming plate is embedded in the rear mold core; wherein: The outer contour of the nozzle plate is adapted to the inner wall of the mobile phone middle frame decorative ring, and a main flow channel is arranged in the middle of the nozzle plate; A first air avoidance portion is provided on the side wall of the front mold core facing the nozzle plate, and an annular first air passage is provided on the end of the front mold core facing the rear mold at the periphery of the first air avoidance portion; The cross section of the rear mold core is a "mountain"-shaped structure, on which the molding plate is matched and embedded, and the molding plate is provided with a second air duct matching the first air duct; a second air avoidance portion is provided on the side wall of the rear mold core close to the inner wall of the molding plate, and a plurality of branch channels are provided on the end of the rear mold core beside the second air avoidance portion, and one end of each of the branch channels is connected to the second air avoidance portion, and the other end is connected to a glue inlet; when the mold is closed, the first air avoidance portion, the second air avoidance portion, the front mold core, and the molding plate jointly enclose a molding cavity adapted to the decorative ring of the middle frame of the mobile phone, and the first air duct is connected to the second air duct.

2. A molding die for a mobile phone middle frame decorative ring according to claim 1, characterized in that: A plurality of inclined third air passages are further provided on the front mold core between the first air avoidance portion and the first air passage, and one end portion of each of the third air passages is connected to the first air passage.

3. The molding die for the mobile phone middle frame decorative ring according to claim 1, characterized in that: The gate plate is provided with a through groove adapted to the main channel, the end of the gate plate facing the rear mold is provided with a first annular groove extending along its contour, and the gate plate is provided with a plurality of inclined protrusions on the inner side of the first groove.

4. The molding die for the mobile phone middle frame decorative ring according to claim 1, characterized in that: The inner wall of the molding plate is provided with one or more second grooves extending along the contour thereof, and the molding plate is provided with a plurality of first vent holes communicating with the second air passage.

5. The forming mold of the mobile phone middle frame decorative ring according to claim 3, characterized in that: The rear mold core is provided with a slot adapted to the forming plate, and a plurality of second vent holes are provided at the bottom of the slot, and each of the second vent holes is communicated with the exhaust channel on the rear mold; the rear mold core is provided with a convex plate adapted to the sprue plate on the inner side of the slot, and the convex plate is provided with the glue inlet and a plurality of the branch channels, and the terminal end of each of the branch channels is provided with a plurality of avoidance grooves adapted to the protrusions one by one, and each of the branch channels is provided with at least one first ejector hole adapted to the ejector one by one on the side of each avoidance groove.

6. The molding die for the mobile phone middle frame decorative ring according to claim 1, characterized in that: The rear mold core is also provided with a plurality of second ejector holes on the outer side of the branch channel, which are matched with the ejector pins one by one. The end of each of the second ejector holes is provided with a connecting groove, and each of the connecting grooves is connected with the second air-avoiding portion.

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