Injection mold with zero-degree demolding structure

Abstract

The utility model discloses an injection mold with a zero-degree demolding structure, which comprises a mold main body, the mold main body comprises a top plate, a hot runner plate, an upper support plate, an upper mold plate, a lower mold plate, a lower support plate and a bottom plate which are sequentially arranged from top to bottom, the upper mold plate is provided with an upper mold core, and the lower mold plate is provided with a lower mold core. A core is arranged on the lower supporting plate, and the top of the core does not exceed the top of the lower mold core; an ejection mechanism is arranged at the top of the bottom plate, a cold air blowing device is arranged at the bottom of the ejection mechanism, the cold air blowing device is provided with an air blowing pipeline used for blowing cold air into a product, and the output end of the air blowing pipeline is exposed out of the top of the core; the mold body is further provided with a first buckling machine used for conducting primary parting on the upper mold plate and the lower mold plate and a second buckling machine used for conducting secondary parting on the lower mold plate and the lower supporting plate. And the inner wall of the product is cooled to shrink inwards, so that the peripheral side surface of the product cannot be scratched by the lower mold core during ejection demolding.

Description

Technical Field

[0001] The utility model relates to the field of injection mold technology, in particular to an injection mold with a zero-degree demoulding structure. Background Art

[0002] Injection molding is a method of producing industrial products, and the products are usually made of rubber injection molding and plastic injection molding.

[0003] Some electronic products, such as the charger bottom shell, include a shell and a pin connected to the shell, and the peripheral side of the shell is a vertical surface. The charger bottom shell is mass-produced using a mold through an injection molding machine. In order to improve the texture and aesthetics of the charger bottom shell, high quality requirements are usually placed on the peripheral side of the shell, such as uniform matte or uniform high gloss effect on the peripheral side, no residual parting line, no scratches, etc., that is, no injection molding defects.

[0004] In the prior art, plastic products with vertical surfaces are usually assembled by sliders. However, after the product is formed, a mold line will be generated at the assembly point. Alternatively, if a slider-free structure is used, the vertical surface of the shell will be scratched when the mold is opened. Alternatively, as in Chinese patent ZL202123383587.3, a second cooling pipe is provided on the core slider. Since the second cooling pipe has a loop, it is inconvenient to process and requires sealing operations, and the steps are cumbersome.

[0005] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0006] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide an injection mold with a zero-degree demolding structure, in which a first cooling pipe is provided on the lower mold core for cooling the lower mold core, and the output end of the blowing pipe is exposed at the top of the core for blowing cold air into the product. The blowing pipe is one-way flow, easy to process and manufacture, and cooperates with the lower mold plate and the lower support plate to part the mold, so that the core is first pulled out to the bottom of the product, and the blowing is started to cool the inner wall of the product to make it shrink inward, thereby making the outer peripheral side of the product separate from the lower mold core, thereby ensuring that the lower mold core will not scratch the outer peripheral side of the product when ejecting and demolding. The method of directly blowing cold air directly acts on the product compared to the cooling core, which can make the product cool quickly, thereby improving the production efficiency of the product.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An injection mold with a zero-degree demoulding structure comprises a mold body, wherein the mold body comprises a top plate, a hot runner plate, an upper support plate, an upper mold plate, a lower mold plate, a lower support plate, and a bottom plate arranged in sequence from top to bottom, wherein the upper mold plate is provided with an upper mold core, wherein the upper mold core is provided with a receiving groove for accommodating a PIN of a product, wherein the lower mold plate is provided with a lower mold core, wherein a core is provided on the lower support plate, wherein the core is passed through the lower mold core, wherein the top of the core does not exceed the top of the lower mold core, and wherein the upper mold core, the lower mold core, and the core together enclose a molding cavity for molding a product; wherein:

[0009] The lower mold core is provided with a first cooling pipe arranged around the outer periphery of the core, the top of the bottom plate is provided with an ejection mechanism, the bottom of the ejection mechanism is provided with a cold air blowing device, the cold air blowing device is provided with a blowing pipe for blowing cold air into the product, and the output end of the blowing pipe is exposed at the top of the core;

[0010] The mold body is also provided with a first snapping machine for separating the upper template and the lower template once, and a second snapping machine for separating the lower template and the lower support plate twice, so that the core is firstly pulled out to the bottom of the product, and the air blowing is started to cool the inner wall of the product to make it shrink inward, thereby making the outer peripheral side of the product separate from the lower mold core, thereby ensuring that the lower mold core will not scratch the outer peripheral side of the product when ejecting and demolding.

[0011] As a preferred solution, the molding cavities are eight arranged in two rows and four columns, and one mold has eight cavities, so eight products can be molded at one time, with high production efficiency.

[0012] As a preferred solution, the upper mold core and the lower mold core are both arranged side by side on the left and right, and each pair of the upper mold core and the lower mold core is arranged with four forming cavities.

[0013] As a preferred solution, the mold body further includes a pouring runner, which includes a main runner and four branch runners connected to the main runner, the main runner is located in an area enclosed by four molding cavities, and the four branch runners are arranged in an "X" shape.

[0014] As a preferred solution, the ejection mechanism includes an upper ejector plate, a lower ejector plate and a plurality of ejectors, the upper ejector plate and the lower ejector plate are sequentially arranged up and down, and the cold air blowing device is arranged at the bottom of the lower ejector plate.

[0015] As a preferred embodiment, the cold air blowing device includes a mounting plate, the air blowing pipe is arranged inside the mounting plate, the output end of the air blowing pipe passes upward through the upper ejector plate and the lower ejector plate and is exposed at the top of the core, and the input end of the air blowing pipe extends out of the mold body.

[0016] As a preferred solution, a side support block is further arranged between the top of the base plate and the bottom of the lower support plate, and the side support block is provided with an avoidance groove for the input end of the blowing pipe to avoid, and the input end of the blowing pipe extends out of the mold body from the avoidance groove.

[0017] As a preferred solution, the blowing pipeline includes a main pipeline and a plurality of branch pipelines connected to the main pipeline, and the output ends of the plurality of branch pipelines are exposed at the top of the core.

[0018] As a preferred solution, the upper mold core is provided with a second cooling channel.

[0019] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0020] Mainly, a first cooling pipe is provided on the lower mold core for cooling the lower mold core, and the output end of the blowing pipe is exposed at the top of the core for blowing cold air into the inside of the product. The blowing pipe is unidirectional and easy to process and manufacture, and cooperates with the lower mold plate and the lower support plate to part the mold, so that the core is first pulled out to the bottom of the product, and the blowing is started to cool the inner wall of the product to make it shrink inward, thereby making the outer peripheral side of the product separate from the lower mold core, thereby ensuring that the lower mold core will not scratch the outer peripheral side of the product when ejecting and demolding. The method of directly blowing cold air directly acts on the product compared to the cooling core, which can make the product cool quickly, thereby improving the production efficiency of the product.

[0021] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an assembly perspective view of a preferred embodiment of the utility model;

[0023] Figure 2 It is a three-dimensional schematic diagram of a cooling air blowing device according to a preferred embodiment of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of a pouring runner of a preferred embodiment of the utility model;

[0025] Figure 4 It is a three-dimensional schematic diagram of the upper mold core of the preferred embodiment of the utility model;

[0026] Figure 5 It is a three-dimensional schematic diagram of the lower mold core of the preferred embodiment of the utility model.

[0027] Description of the accompanying drawings:

[0028] 10. Top plate 20. Hot runner plate

[0029] 30. Upper support plate 40. Upper template

[0030] 41. Upper die core 411. Accommodation groove

[0031] 42. First installation groove 43. Second cooling pipe

[0032] 50. Lower mold plate 51. Lower mold core

[0033] 52. Second installation groove 53. First cooling pipe

[0034] 60. Lower support plate 61. Core

[0035] 70. Base plate

[0036] 71. Side support block 711. Avoidance groove

[0037] 80. Molding cavity 90. Ejection mechanism

[0038] 91. Air-cooling device 911. Air-blowing duct

[0039] 9111, main pipeline 9112, branch pipeline

[0040] 912, mounting plate 92, upper ejector plate

[0041] 93. Lower ejector plate

[0042] 100. Casting runner 1001. Main runner

[0043] 1002, runner 110, first buckle machine

[0044] 120. Second trigger. DETAILED DESCRIPTION

[0045] First of all, it should be noted that in the description of the present invention, the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0046] Please refer to Figures 1 to 5 As shown, it shows the specific structure of the preferred embodiment of the utility model, including a mold body, and the mold body includes a top plate 10, a hot runner plate 20, an upper support plate 30, an upper mold plate 40, a lower mold plate 50, a lower support plate 60, and a bottom plate 70 arranged in sequence from top to bottom.

[0047] The upper template 40 is provided with an upper mold core 41, and the upper mold core 41 is provided with a accommodating groove 411 for accommodating the PIN of the product. The bottom of the upper template 40 is upwardly concavely provided with a first installation groove 42, and the upper mold core 41 is arranged in the first installation groove 42. The lower template 50 is provided with a lower mold core 51, and the top of the lower template 50 is downwardly concavely provided with a second installation groove 52, and the lower mold core 51 is arranged in the second installation groove 52. The lower support plate 60 is provided with a core 61, and the core 61 is penetrated in the lower mold core 51, and the top of the core 61 does not exceed the top of the lower mold core 51. The upper mold core 41, the lower mold core 51, and the core 61 together form a molding cavity 80 for product molding.

[0048] See also Figure 4 and Figure 5 As shown, specifically, the molding cavities 80 are arranged in two rows and four columns, and the arrangement of one mold with eight cavities can mold eight products at one time, with high production efficiency. The upper mold core 41 and the lower mold core 51 are both arranged side by side on the left and right, and each pair of the upper mold core 41 and the lower mold core 51 is arranged with four molding cavities 80.

[0049] The lower mold core 51 is provided with a first cooling pipe 53 arranged around the outer circumference of the core 61, and the upper mold core 41 is provided with a second cooling pipe 43; specifically, the input end and the output end of the first cooling pipe 53 are both exposed outside the lower mold plate 50, and the input end and the output end of the second cooling pipe 43 are both exposed outside the upper mold plate 40. The setting of the first cooling pipe 53 and the second cooling pipe 43 is a mature technology in this field and will not be elaborated here.

[0050] The top of the bottom plate 70 is provided with an ejection mechanism 90, and the bottom of the ejection mechanism 90 is provided with a cold air blowing device 91, and the cold air blowing device 91 is provided with a blowing pipe 911 for blowing cold air into the product, and the output end of the blowing pipe 911 is exposed at the top of the core 61;

[0051] See also Figure 1 and Figure 2 As shown, specifically, the ejection mechanism 90 includes an upper ejector plate 92, a lower ejector plate 93 and a plurality of ejectors (not shown in the figure), the upper ejector plate 92 and the lower ejector plate 93 are sequentially arranged up and down, and the cold air blowing device 91 is arranged at the bottom of the lower ejector plate 93; the cold air blowing device 91 includes a mounting plate 912, and the blowing pipe 911 is arranged in the mounting plate 912, and the output end of the blowing pipe 911 passes through the upper ejector plate 92 and the lower ejector plate 93 upwards and is exposed to the top of the core 61, and the input end of the blowing pipe 911 extends out of the mold body, and the input end of the blowing pipe 911 is connected to a cold air source (not shown in the figure);

[0052] In addition, a side support block 71 is provided between the top of the base plate 70 and the bottom of the lower support plate 60, and the side support block 71 is provided with an avoidance groove 711 for the input end of the blowing pipe 911 to avoid, and the input end of the blowing pipe 911 extends out of the mold body from the avoidance groove 711, and eight cold air blowing devices 91 are provided corresponding to the molding cavity 80; preferably, the blowing pipe 911 includes a main pipe 9111 and a plurality of branch pipes 9112 connected to the main pipe 9111, and the output ends of the plurality of branch pipes 9112 are all exposed at the top of the core 61, and the plurality of branch pipes 9112 are arranged around the periphery of the core 61, so that the cold air is blown out more evenly.

[0053] See also Figure 3 As shown, the mold body also includes a pouring channel 100, which includes a main channel 1001 and four branch channels 1002 connected to the main channel 1001. The main channel 1001 is located in the area surrounded by four molding cavities 80, and the four branch channels 1002 are arranged in an "X" shape.

[0054] The mold body is also provided with a first snapping machine 110 for separating the upper template 40 and the lower template 50 once, and a second snapping machine 120 for separating the lower template 50 and the lower support plate 60 twice. The first separation makes the pin of the product separate from the upper mold core 41, and the second separation makes the core 61 away from the lower mold core 51, so that the core 61 is first pulled out to the bottom of the product, and the blowing is started to cool the inner wall of the product to make it shrink inward, so that the outer peripheral side of the product is separated from the lower mold core 51, thereby ensuring that the lower mold core 51 will not scratch the outer peripheral side of the product when ejecting and demolding. The first snapping machine 110 and the second snapping machine 120 are mature technologies in this field and will not be described here.

[0055] The design focus of this utility model is:

[0056] Mainly, a first cooling pipe is provided on the lower mold core for cooling the lower mold core, and the output end of the blowing pipe is exposed at the top of the core for blowing cold air into the inside of the product. The blowing pipe is unidirectional and easy to process and manufacture, and cooperates with the lower mold plate and the lower support plate to part the mold, so that the core is first pulled out to the bottom of the product, and the blowing is started to cool the inner wall of the product to make it shrink inward, thereby making the outer peripheral side of the product separate from the lower mold core, thereby ensuring that the lower mold core will not scratch the outer peripheral side of the product when ejecting and demolding. The method of directly blowing cold air directly acts on the product compared to the cooling core, which can make the product cool quickly, thereby improving the production efficiency of the product.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight 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. An injection mold with a zero-degree demoulding structure, comprising a mold body, characterized in that: The mold body includes a top plate, a hot runner plate, an upper support plate, an upper mold plate, a lower mold plate, a lower support plate, and a bottom plate, which are arranged in sequence from top to bottom. The upper mold plate is provided with an upper mold core, and the upper mold core is provided with a receiving groove for accommodating the PIN of the product. The lower mold plate is provided with a lower mold core, and a core is provided on the lower support plate. The core is inserted into the lower mold core, and the top of the core does not exceed the top of the lower mold core. The upper mold core, the lower mold core, and the core together form a molding cavity for molding the product; wherein: The lower mold core is provided with a first cooling pipe arranged around the outer periphery of the core, the top of the bottom plate is provided with an ejection mechanism, the bottom of the ejection mechanism is provided with a cold air blowing device, the cold air blowing device is provided with a blowing pipe for blowing cold air into the product, and the output end of the blowing pipe is exposed at the top of the core; The mold body is also provided with a first snapping machine for primary separation of the upper template and the lower template, and a second snapping machine for secondary separation of the lower template and the lower support plate.

2. The injection mold with a zero-degree demoulding structure according to claim 1, characterized in that: The molding cavities are eight and arranged in two rows and four columns.

3. The injection mold with a zero-degree demoulding structure according to claim 2, characterized in that: The upper mold core and the lower mold core are both arranged side by side in two, and each pair of the upper mold core and the lower mold core is provided with four forming cavities.

4. The injection mold with a zero-degree demoulding structure according to claim 3, characterized in that: The mold body also includes a pouring runner, which includes a main runner and four branch runners connected to the main runner. The main runner is located in an area surrounded by four molding cavities, and the four branch runners are arranged in an "X" shape.

5. The injection mold with a zero-degree demoulding structure according to claim 1, characterized in that: The ejection mechanism comprises an upper ejector plate, a lower ejector plate and a plurality of ejectors, the upper ejector plate and the lower ejector plate are arranged in sequence up and down, and the cold air blowing device is arranged at the bottom of the lower ejector plate.

6. The injection mold with a zero-degree demoulding structure according to claim 5, characterized in that: The cold air blowing device comprises a mounting plate, the air blowing pipe is arranged in the mounting plate, the output end of the air blowing pipe passes through the upper ejector plate and the lower ejector plate upwards and is exposed at the top of the core, and the input end of the air blowing pipe extends out of the mold body.

7. The injection mold with a zero-degree demoulding structure according to claim 6, characterized in that: A side support block is also arranged between the top of the bottom plate and the bottom of the lower support plate. The side support block is provided with an avoidance groove for the input end of the blowing pipe to avoid. The input end of the blowing pipe extends out of the mold body from the avoidance groove.

8. The injection mold with a zero-degree demoulding structure according to claim 1, characterized in that: The air blowing pipeline comprises a main pipeline and a plurality of branch pipelines connected to the main pipeline, and the output ends of the plurality of branch pipelines are all exposed at the top of the core.

9. The injection mold with a zero-degree demoulding structure according to claim 1, characterized in that: The upper mold core is provided with a second cooling pipeline.

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