Forming mold with secondary ejection structure and injection molding machine

Abstract

The utility model discloses a forming die with a secondary ejection structure and an injection molding machine, which belong to the field of product manufacturing, and comprise a top plate, a push plate, a second movable plate, a first movable plate and a bottom plate which are sequentially arranged along the vertical direction, and a second lifting assembly is arranged between the first movable plate and the bottom plate. A first lifting assembly is arranged at the top of the second movable plate, and the top of the first lifting assembly is connected with the bottom of the push plate. A mold plate is arranged on the top of the top plate, at least one forming cavity used for product forming is formed in the mold plate, and ejector pins are arranged corresponding to the forming cavities. The utility model discloses a forming mold with a secondary ejection structure and an injection molding machine, which respectively drive a push plate and a first movable plate to move through a first lifting assembly and a second lifting assembly, so that a certain distance can be reserved between a product and an ejector pin as well as between the product and a forming cavity; and then the second lifting assembly drives the second movable plate to drive the ejector pin to eject upwards, so that the product is effectively ejected out through the ejector pin.

Description

Technical Field

[0001] This utility model belongs to the field of product manufacturing, and specifically relates to a molding die with a secondary ejection structure. Background Technology

[0002] With the rapid development of the manufacturing industry, injection molds have become one of the main devices in factories for product manufacturing. Nowadays, injection molds generally consist of two parts: a moving mold and a fixed mold. The moving mold is installed on the moving platen of the injection molding machine, and the fixed mold is installed on the fixed platen of the injection molding machine. During injection molding, the moving mold and the fixed mold close to form the gating system and the cavity. When the mold opens, the moving mold and the fixed mold separate to remove the plastic product.

[0003] Currently, when demolding deep-cavity plastic products, the space at the ejector pin position is insufficient to directly eject the product, which leads to the product easily breaking during demolding. Therefore, we have introduced a molding die and injection molding machine with a secondary ejection structure to solve the above problems. Utility Model Content

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, this utility model provides a molding die with a secondary ejection structure. The first lifting component and the second lifting component drive the push plate and the first movable plate to move respectively. Before the product is ejected, the first lifting component can make a certain distance between the ejector pin and the molding cavity. Then, the second lifting component drives the second movable plate to push the ejector pin upward, so that the ejector pin can effectively eject the product. It has good practical value and application prospects.

[0005] To achieve the above objectives, this utility model provides a molding die with a secondary ejection structure, which includes a top plate, a push plate, a second movable plate, a first movable plate, and a bottom plate arranged sequentially along the vertical direction;

[0006] A guide post is vertically arranged between the top plate and the bottom plate. The guide post passes through the first movable plate, the second movable plate and the push plate from bottom to top, and its top end is connected to the top plate.

[0007] A second lifting assembly is provided between the first movable plate and the base plate, and a first lifting assembly is provided on the top of the second movable plate. The top of the first lifting assembly is connected to the bottom of the push plate.

[0008] A template is provided on the top of the top plate, and at least one forming cavity for product forming is provided on the template; a slider is provided in the push plate, and an ejector pin is provided corresponding to the forming cavity. The bottom of the ejector pin is connected to the top of the second movable plate, and its top passes through the slider and communicates with the bottom of the forming cavity.

[0009] As a further improvement of this utility model, a nylon rubber stopper is provided on the top plate.

[0010] As a further improvement of this utility model, there are two first lifting components and two second lifting components, which are arranged in a mirror image with respect to the center line of the push plate.

[0011] As a further improvement of this utility model, the first lifting assembly includes a first telescopic rod and a buffer spring, the top of the first telescopic rod is connected to the top plate, and the buffer spring is disposed between the second movable plate and the push plate.

[0012] As a further improvement of this utility model, there are multiple molding cavities and multiple sliders; and multiple ejector pins are provided for each of the multiple molding cavities. The bottom of the slider is disposed on the push plate, and its top is slidably connected to the molding cavity.

[0013] As a further improvement of this utility model, the maximum distance between the push plate and the top plate is the same as the maximum sliding distance of the slider in the guide groove.

[0014] Based on this, the present invention also provides an injection molding machine, which includes the above-mentioned molding die with a secondary ejection structure.

[0015] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0016] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0017] The molding die with a secondary ejection structure of this utility model drives the push plate and the first movable plate to move through the first lifting component and the second lifting component respectively. Before the product is ejected, the first lifting component can make a certain distance between the ejector pin and the molding cavity, and then the second lifting component drives the second movable plate to push the ejector pin upward, so that the ejector pin can effectively eject the product. It has good practical value and application prospects. Attached Figure Description

[0018] Figure 1 This is a front cross-sectional view of a molding die with a secondary ejection structure in an embodiment of this utility model;

[0019] Figure 2 This is a top view of the molding die with a secondary ejection structure in an embodiment of this utility model;

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0021] 100, Base plate; 200, First movable plate; 300, Second movable plate; 301, Mounting groove; 400, Push plate; 401, Slide groove; 402, Slider; 500, Top plate; 501, Molding cavity; 600, First lifting assembly; 700, Guide column; 800, Second lifting assembly; 900, Ejector pin; 1000, Product; 1100, Template; 1101, Rubber stopper. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Please see Figures 1-2 In the preferred embodiment of this utility model, the molding die with a secondary ejection structure uses a push plate to first remove part of the product adhesive to weaken the product's adhesion, and then the ejector pin ejects the product smoothly in a secondary ejection.

[0025] Specifically, such as Figure 1 As shown in the preferred embodiment of the present invention, the molding die includes a top plate 500, a push plate 400, a second movable plate 300, a first movable plate 200, and a bottom plate 100 arranged vertically in sequence; a guide post 700 is arranged vertically between the top plate 500 and the bottom plate 100, the guide post 700 passing through the first movable plate 200, the second movable plate 300, and the push plate 400 from bottom to top, and its top end is connected to the top plate 500; a second lifting assembly 800 is arranged between the first movable plate 200 and the bottom plate 100, and the second... The top of the movable plate 300 is provided with a first lifting component 600, the top of the first lifting component 600 is connected to the bottom of the push plate 400; and a template 1100 is provided on the top of the top plate 500, the template 1100 has at least one forming cavity 501 for forming the product 1000; a slider 402 is provided in the push plate 400, and an ejector pin 900 is provided corresponding to the forming cavity 501, the bottom of the ejector pin 900 is connected to the top of the second movable plate 300, and its top passes through the slider 402 and communicates with the bottom of the forming cavity 501.

[0026] In practical use, after the product 1000 is formed in the molding cavity 501, the first lifting component 600 and the second lifting component 800 drive the push plate 400 and the first movable plate 200 to move respectively. Before the product 1000 is unloaded, the first lifting component 600 can make a certain distance between the ejector pin 900 and the molding cavity 501. Then, the second lifting component 800 drives the second movable plate 300 to push the ejector pin 900 upward, so that the ejector pin 900 can effectively push the product 1000 out.

[0027] Furthermore, a nylon plug 1101 is provided on the top plate 500.

[0028] In one specific embodiment, there are two first lifting components 600 and two second lifting components 800, which are arranged in a mirror image with respect to the center line of the push plate 400. The first lifting component 600 includes a first telescopic rod and a buffer spring. The top of the first lifting component 600 is connected to the top plate 500, and the buffer spring is disposed between the second movable plate 300 and the push plate 400.

[0029] At the same time, such as Figure 1 As shown, there are multiple molding cavities 501 and multiple sliders; and multiple ejector pins 900 are provided for each of the multiple molding cavities 501. The bottom of the slider 402 is provided on the push plate 400, and its top is slidably connected to the molding cavity 501.

[0030] Furthermore, corresponding to the mounting position of the ejector pin 900, a mounting groove 301 is provided on the second movable plate 300 for accommodating the assembly of the ejector pin 900. A sliding groove 401 is also provided within the push plate 400 for the ejector pin 900 to slide.

[0031] Furthermore, the maximum distance between the push plate 400 and the top plate 500 is the same as the maximum sliding distance of the slider 402 within the groove 401.

[0032] Based on this, the present invention also provides an injection molding machine, which includes the above-mentioned molding die with a secondary ejection structure.

[0033] The molding die with a secondary ejection structure of this utility model drives the push plate and the first movable plate to move through the first lifting component and the second lifting component respectively. Before the product is ejected, the first lifting component can make a certain distance between the ejector pin and the molding cavity, and then the second lifting component drives the second movable plate to push the ejector pin upward, so that the ejector pin can effectively eject the product. It has good practical value and application prospects.

[0034] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A molding die having a secondary ejection structure, characterized by, It includes top plate (500), push plate (400), second movable plate (300), first movable plate (200) and bottom plate (100) arranged in sequence along the vertical direction; The guiding column (700) is arranged between the top plate (500) and the bottom plate (100) along the vertical direction, and the guiding column (700) penetrates the first movable plate (200), the second movable plate (300) and the push plate (400) in sequence from bottom to top, and the top end of the guiding column (700) is connected with the top plate (500); And a second lifting assembly (800) is arranged between the first movable plate (200) and the bottom plate (100), and a first lifting assembly (600) is arranged on the top of the second movable plate (300), and the top of the first lifting assembly (600) is connected with the bottom of the push plate (400); And a mold plate (1100) is arranged on the top of the top plate (500), and at least one forming cavity (501) for product (1000) forming is formed on the mold plate (1100); a sliding block (402) is arranged in the push plate (400), and a ejector pin (900) is arranged corresponding to the forming cavity (501), the bottom of the ejector pin (900) is connected with the top of the second movable plate (300), and the top of the ejector pin (900) penetrates the sliding block (402) and communicates with the bottom of the forming cavity (501).

2. The molding die having a secondary ejection structure according to claim 1, characterized by, A nylon rubber plug (1101) is arranged on the top plate (500).

3. The molding die having a secondary ejection structure according to claim 1, characterized by, The first lifting assembly (600) and the second lifting assembly (800) are two, and the two first lifting assemblies (600) and the two second lifting assemblies (800) are arranged in mirror image with the center line of the push plate (400).

4. The molding die having a secondary ejection structure according to claim 1, characterized by, The first lifting assembly (600) comprises a first telescopic rod and a buffer spring, the top of the first telescopic rod is connected with the top plate (500), and the buffer spring is arranged between the second movable plate (300) and the push plate (400).

5. The molding die having a secondary ejection structure according to any one of claims 1 to 4, characterized by, The forming cavity (501) and the sliding block (402) are both provided with multiple; and multiple ejector pins (900) are arranged corresponding to the multiple forming cavities (501), the bottom of the sliding block (402) is arranged on the push plate (400), and the top of the sliding block (402) is slidingly connected in the forming cavity (501).

6. The molding die having a secondary ejection structure according to claim 5, characterized by, The maximum distance between the push plate (400) and the top plate (500) is the same as the maximum sliding distance of the sliding block (402) in the sliding groove (401).

7. An injection molding machine characterized by, The forming mold with secondary ejection structure comprises the forming mold with secondary ejection structure according to any one of claims 1-6.

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