Injection mold applied to middle frame of display

Abstract

The utility model discloses an injection mold applied to a middle frame of a display. The injection mold comprises an upper mold core, a lower mold core and a pouring system, the upper mold core is provided with a cavity, the lower mold core is provided with a core, and the cavity and the core form an injection mold cavity; the pouring system is arranged in the upper mold core and comprises a pouring runner and branch runners, the branch runners comprise a main runner, side runners and a center runner, the side runners are arranged around the edge of the mold cavity at intervals, the side runners penetrate through the upper mold core and form side pouring ports, the center runner is arranged in the center of the mold cavity, and the side pouring ports are communicated with the side runners. The central runner penetrates through the upper mold core and is provided with a central sprue gate; thus, glue materials flow into the injection mold cavity from the side sprue gates and the center sprue gate at the same time, uniform glue feeding of multiple positions on the injection mold cavity is facilitated, the stable glue feeding amount of each position of the injection mold cavity is guaranteed, and therefore it is guaranteed that the quality of formed products is stable and consistent, practicability is high, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold field technology especially is applied to the injection mold of display middle frame. BACKGROUND

[0002] At present, the mould is various moulds and tools used in industrial production such as injection, blow molding, extrusion, die casting or forging forming, smelting, stamping and the like to obtain required products, and the injection mold is the most important in the injection molding process;The injection mold is a tool for producing plastic products, and is also a tool for giving plastic products complete structure and accurate size, injection molding is a processing method used when batch producing some complex-shaped parts, specifically referring to injecting high-pressure plastic melted by an injection molding machine into a mold cavity, and obtaining a shaped product after cooling and solidification.

[0003] With the development of science and technology, the present production process is increasingly mature, the injection mold provides power to the finished product by the oil cylinder at the bottom and ejects the finished product from the mold groove, thereby saving a large amount of ejection time;However, the existing injection mold structure design is poor, and the glue requirement of each part of the injection part is different, which makes the place where the injection part needs a large amount of glue prone to uneven feeding, resulting in product rejection after molding, unstable molding quality, and small application range.

[0004] Therefore, it is necessary to study a new technical scheme to solve the above problems. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides an injection mold applied to a display middle frame, which makes glue flow into the injection mold cavity from the side gate and the center gate at the same time, is beneficial to uniform feeding of the glue at multiple positions of the injection mold cavity, ensures stable glue feeding amount at each position of the injection mold cavity, and further ensures stable and consistent quality of the molded product, has strong practicability, and has wide application range.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An injection mold applied to a display middle frame comprises an upper mold core, a lower mold core and a pouring system;Wherein:

[0008] The upper die core is provided with a cavity, the lower die core is provided with a core, the upper die core is closed on the lower die core, and the cavity and the core form an injection molding cavity. The gating system is arranged in the upper die core, the gating system comprises a gating flow channel and a distribution channel connected to the gating flow channel, the upper end of the gating flow channel penetrates the upper die core, the distribution channel comprises a main flow channel and a side flow channel connected to the main flow channel, and the center flow channel, the main flow channel is connected with the gating flow channel, the side flow channel is arranged at intervals around the edge of the cavity, and the lower end of the side flow channel penetrates the upper die core and forms a side gate. The center flow channel is arranged at least two and arranged at the center position of the cavity along the length direction of the cavity, and the lower end of the center flow channel penetrates the upper die core and forms a center gate.

[0009] As a preferred scheme, the side flow channel is provided with eight, and the center flow channel is provided with two.

[0010] As a preferred scheme, the cavity is provided with a core for forming an edge injection molded part, and the side gate penetrates the core.

[0011] As a preferred scheme, the core comprises a first core part, a second core part, a third core part and a fourth core part, the first core part and the second core part are arranged in sequence on the cavity, the third core part and the fourth core part are arranged in sequence on the cavity, the third core part is arranged at the left end of the first core part, the fourth core part is arranged at the right end of the second core part, and the first to fourth core parts are arranged in C shape.

[0012] As a preferred scheme, the first core part, the second core part, the third core part and the fourth core part can be detachably arranged on the cavity.

[0013] As a preferred scheme, the third core part and the fourth core part each have a boss extending forward, the height of the boss is less than that of the third core part and the fourth core part, the boss has a positioning portion extending towards the core, the core is provided with a positioning groove matched with the positioning portion, and the positioning portion and the positioning groove are matched and connected.

[0014] As a preferred scheme, the boss is further provided with a first positioning step between the positioning portion and the corresponding core part, and the core is provided with a second positioning step matched with the first positioning step, when the upper die core and the lower die core are closed, the positioning portion and the positioning groove are matched and connected, and the first positioning step and the second positioning step are matched and connected.

[0015] As a preferred solution, the third positioning step is arranged on the cavity, and the outer wall surface of the core is in contact with the inner wall surface of the third positioning step to realize the assembly positioning of the core on the cavity.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, according to the above technical scheme, the design of the pouring system makes the glue flow into the injection mold cavity from the side pouring port and the center pouring port at the same time, which is beneficial to the uniform glue feeding on multiple positions of the injection mold cavity, guarantees the stable glue feeding amount of each position of the injection mold cavity, improves the processing control of the formed product, and further ensures the stable and consistent quality of the formed product, has high practicability and wide application range.

[0017] Secondly, the first to fourth core members are detachably arranged, corresponding core members are replaced according to the forming shape requirement of the formed product, so that the formed product of the same type or the same type but with different forming shapes is injection molded, thereby meeting the use requirement of the user, and the usability is good.

[0018] In addition, the third positioning step is arranged to facilitate the assembly positioning of the core on the cavity, and the operation is simple and convenient.

[0019] In order to more clearly illustrate the structural features and effects of the utility model, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the structure schematic diagram of the upper die core of the embodiment of the utility model;

[0021] Figure 2 is the first sectional view of the upper die core of the embodiment of the utility model;

[0022] Figure 3 is the second sectional view of the upper die core of the embodiment of the utility model;

[0023] Figure 4 is Figure 3 the local enlarged schematic diagram of A position;

[0024] Figure 5 is the structure schematic diagram of the lower die core of the embodiment of the utility model;

[0025] EXPLANATION OF THE DRAWINGS:

[0026] 10, upper die core 11, cavity

[0027] 12, core 121, first core member

[0028] 122, second core member 123, third core member

[0029] 124, fourth core member 125, boss

[0030] 126, positioning portion 127, first positioning step

[0031] 13, third positioning step 20, lower die core

[0032] 21, core 22, positioning groove

[0033] 23, second positioning step 30, gating system

[0034] 31, pouring runner 32, branch runner

[0035] 321, main runner 322, side runner

[0036] 323, center runner 324, side gate

[0037] 325, center gate. DETAILED DESCRIPTION

[0038] Please refer to Figures 1 to 5 , which shows the specific structure of the embodiment of the utility model.

[0039] An injection mold applied to a middle frame of a display comprises an upper die core 10, a lower die core 20 and a gating system 30; wherein:

[0040] The upper die 10 is provided with a cavity 11, the lower die 20 is provided with a core 21, the upper die 10 is closed on the lower die 20, and the cavity 11 and the core 21 are configured to form an injection mold cavity; the gating system 30 is arranged inside the upper die 10, the gating system 30 includes a gating runner 31 and a distribution runner 32 communicating with the gating runner, the upper end of the gating runner 31 penetrates the upper die 10, the distribution runner 32 includes a main runner 321 and side runners 322 and a center runner 323 communicating with the main runner 321, the main runner 321 is connected with the gating runner 31, the side runners 322 are arranged at intervals around the edge of the cavity 11, the lower end of the side runners 322 penetrates the upper die 10 and forms a side gate 324, the center runner 323 is arranged at least two and arranged at intervals along the length direction of the cavity 11 at the center position of the cavity 11, the lower end of the center runner 323 penetrates the upper die 10 and forms a center gate 325; preferably, the side runners 322 are arranged eight, among the eight side runners 322, three are arranged at intervals left and right at the front position of the cavity, another three are arranged at intervals left and right at the rear position of the cavity, and the remaining two are arranged at the middle position of the left side and the right side of the cavity respectively, at the same time, the width of the side gate of the side runner at the front side is greater than that of the other side runners, and the center runner 323 is arranged two; in this way, through the design of the gating system, the glue flows into the injection mold cavity from the side gate and the center gate at the same time, which is beneficial to the uniform feeding of the glue at multiple positions of the injection mold cavity, ensures the stable feeding amount of each position of the injection mold cavity, thereby improving the processing control of the molded product, and further ensures the stable and consistent quality of the molded product, has strong practicality and wide application range.

[0041] Further, the cavity 11 is provided with a core 12 for forming an edge injection molded part, the side gate 324 penetrates the core 12, the core 12 comprises a first core part 121, a second core part 122, a third core part 123 and a fourth core part 124, the first core part 121 and the second core part 122 are arranged in left and right extension, the first core part 121 and the second core part 122 are arranged in sequence on the cavity 11 in left and right, the third core part 123 and the fourth core part 124 are arranged in front and back extension, the third core part 123 is arranged at the left end of the first core part 121, the fourth core part 124 is arranged at the right end of the second core part 122, the first to fourth core parts are in C shape; preferably, the first core part 121, the second core part 122, the third core part 123 and the fourth core part 124 are detachably arranged on the cavity 11, in this way, the detachable arrangement of the first to fourth core parts can change the corresponding core part according to the molding shape requirement of the molded product, so as to meet the use requirement of the user, and the usability is good.

[0042] Specifically, the third core part 123 and the fourth core part 124 each have a boss 125 arranged in forward extension, the height of the boss 125 is less than that of the third core part 123 and the fourth core part 124, the boss 125 has a positioning part 126 arranged in extension towards the core, the core 21 is provided with a positioning groove 22 matched with the positioning part, the positioning part 126 is matched and connected with the positioning groove 22;

[0043] Further, the boss 125 is further provided with a first positioning step 127 between the positioning part 126 and the corresponding core part, correspondingly, the core 21 is provided with a second positioning step 23 matched with the first positioning step, when the upper die and the lower die are closed, the positioning part 126 and the positioning groove 22 are matched and connected with each other, the first positioning step 127 and the second positioning step 23 are matched and connected with each other, in this way, the arrangement of the positioning part and the positioning groove is beneficial to the matching positioning between the core and the cavity, so as to ensure the subsequent injection stability, and the arrangement of the first positioning step and the second positioning step improves the positioning and connecting effect of the third and fourth core parts on the core.

[0044] Preferably, the cavity 11 is provided with a third positioning step 13, the outer wall surface of the core 12 is in contact with the inner wall surface of the third positioning step 13, so as to realize the assembly positioning of the core on the cavity, in this way, the arrangement of the third positioning step is convenient for the assembly positioning of the core on the cavity, and the operation is simple and the assembly is convenient.

[0045] The utility model discloses a design emphasis lies in, it is mainly through the design of pouring system, makes the glue from side pouring port, center pouring port flow into injection mold cavity simultaneously, be favorable to the even feeding of injection mold cavity on many positions, guarantee the feeding amount stability of injection mold cavity every position, to improve the processing control of the forming product, and then ensure the quality stability of the forming product is consistent, the practicality is strong, and the scope of application is wide.

[0046] Secondly, the detachable setting of the first to fourth core members, according to the forming shape requirement of the forming product and replacing the corresponding core member, so as to facilitate the injection molding use of the same type or the same type but the part forming shape different forming product, thereby meeting the use demand of the user, and the usability is good, at the same time, the setting of the positioning part and the positioning groove is favorable to the matching positioning between the core and the cavity, thereby guaranteeing the subsequent injection stability, and, the setting of the first positioning step and the second positioning step improves the positioning connection effect of the third and fourth core members on the core;

[0047] And, the setting of the third positioning step, so as to facilitate the assembly positioning of the core on the cavity, simple operation, and convenient assembly.

[0048] The above is only the preferred embodiment of the utility model, and does not make any limitation on the technical range of the utility model, so any slight modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment still belongs to the range of the technical scheme of the utility model.

Claims

1. An injection mold applied to a middle frame of a display, characterized in that: The injection mold comprises an upper mold core, a lower mold core and a pouring system, wherein: The upper mold core is provided with a cavity, the lower mold core is provided with a core, the upper mold core is closed on the lower mold core, and the cavity and the core form an injection mold cavity; the pouring system is arranged in the upper mold core, the pouring system comprises a pouring runner and a distribution runner connected with the pouring runner, the upper end of the pouring runner penetrates the upper mold core, the distribution runner comprises a main runner and side runners connected with the main runner, the center runner, the main runner is connected with the pouring runner, the side runners are arranged at intervals around the edge of the cavity, the lower end of the side runner penetrates the upper mold core and forms a side pouring port, and the center runner is arranged at least two and arranged at the center of the cavity along the length direction of the cavity, the lower end of the center runner penetrates the upper mold core and forms a center pouring port.

2. The injection mold for a display middle frame according to claim 1, wherein: The side runner is provided with eight, and the center runner is provided with two.

3. The injection mold for a display middle frame according to claim 1, wherein: The cavity is provided with a core for forming an edge injection part, and the side pouring port penetrates the core.

4. The injection mold for a display middle frame according to claim 3, wherein: The core comprises a first core part, a second core part, a third core part and a fourth core part, the first core part and the second core part are arranged at intervals in the left and right directions, the first core part and the second core part are arranged in the left and right directions on the cavity in sequence, the third core part and the fourth core part are arranged at intervals in the front and back directions, the third core part is arranged at the left end of the first core part, the fourth core part is arranged at the right end of the second core part, and the first to fourth core parts are arranged in a C shape.

5. The injection mold for a display middle frame according to claim 4, wherein: The first core part, the second core part, the third core part and the fourth core part are detachably arranged on the cavity.

6. The injection mold for a display middle frame according to claim 4, wherein: The third core part and the fourth core part each have a boss arranged in the front direction, the height of the boss is less than that of the third core part and the fourth core part, the boss has a positioning portion arranged in the direction of the core, the core is provided with a positioning groove matched with the positioning portion, and the positioning portion and the positioning groove are matched and connected with each other.

7. The injection mold for a display middle frame according to claim 6, wherein: The boss is further provided with a first positioning step between the positioning portion and the corresponding core part, and the core is provided with a second positioning step matched with the first positioning step, when the upper mold core and the lower mold core are closed, the positioning portion and the positioning groove are matched and connected with each other, and the first positioning step and the second positioning step are matched and connected with each other.

8. The injection mold for a display middle frame according to claim 3, wherein: The cavity is provided with a third positioning step, and the outer wall surface of the core is in contact with the inner wall surface of the third positioning step to realize the assembly and positioning of the core on the cavity.

Images