Pincer-shaped glue feeding mold

Abstract

The utility model provides a pincerlike glue feeding mould which comprises a female mould core, a runner insert, a mould cavity, a runner plate, a runner and a pincerlike sprue, the mould cavity is formed in the middle of the runner insert, the mould cavity comprises a first vertical direction, the runner insert is fixed in the middle of the female mould core, the runner plate is arranged at the top of the runner insert and the female mould core, the runner is arranged in the runner plate, and the runner is arranged in the runner plate. The pincerlike sprue comprises a first part and a second part which are communicated with each other, the joint of the first part and the second part is of an arc-shaped structure, the first part is arranged in the runner plate and the runner insert, the second part is arranged in the runner insert, the first part is communicated with the runner, and the second part is communicated with the mold cavity; and the included angle between the second part and the first vertical direction is 50-75 degrees. The die is stable and reliable in structure, can reduce injection stress loss, is convenient to separate from a product, is easy to demold by adopting the pincer-shaped pouring gate, can avoid manual cutting of the pouring gate, can ensure the precision of a die cavity of a lens cone, and reduces the forming cost of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic lens barrel injection molding, in particular to a clamp gate mold. Background Art

[0002] In the trend of intelligentization, people have higher and higher requirements for the quality of imaging lenses. It is increasingly important to produce stable, reliable and high-quality lenses. The quality of plastic barrels has a great influence on the production yield and reliability of lenses, and the gate feeding scheme is the key factor determining whether a plastic mold can form high-quality products.

[0003] At present, the common gate feeding schemes for plastic barrel products are: side gate feeding and submarine gate feeding (also known as horn gate feeding), each of which has inevitable disadvantages. ① Side gate feeding: 1. The stress near the gate is relatively large. 2. It is necessary to manually cut off the gate (runner), and it is easy to cause residual materials or unsmooth cutting on the product surface during the manual cutting process. 3. Obvious gate scars will be left on the surface. ② Submarine gate feeding (also known as horn gate feeding): 1. The pressure loss from the gate position to the mold cavity is relatively large. 2. Defects such as cold materials and air marks are generated on the product appearance surface. Summary of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a clamp gate mold, which can not only eliminate the need for manual gate cutting but also ensure the accuracy of the lens barrel mold cavity and reduce the product molding cost.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a clamp gate mold, which includes a female mold core, a runner insert, a mold cavity, a runner plate, a runner and a clamp gate. The mold cavity is formed in the middle of the runner insert. The mold cavity includes a first vertical direction. The runner insert is fixed in the middle of the female mold core. The runner plate is arranged on the top of the runner insert and the female mold core. The runner is arranged in the runner plate. The clamp gate includes a first component and a second component that are mutually communicated. The connection part of the first component and the second component is an arc structure. The first component is arranged in the runner plate and the runner insert. The second component is arranged in the runner insert. The first component is communicated with the runner. The second component is communicated with the mold cavity. The included angle between the second component and the first vertical direction is 50° - 75°.

[0007] Further preferably, the included angle between the first component and the first vertical direction is 1° - 5°.

[0008] Further preferably, the opening size of the connection part between the second component and the mold cavity is 0.6mm - 1mm.

[0009] Further preferably, the clamp gate includes a plurality of them, and the plurality of second components are evenly distributed around the mold cavity.

[0010] Further preferably, the runner and the clamp gate are integrally formed.

[0011] Further preferably, a guide through hole is formed inside the runner plate. One end of the guide through hole is connected to the runner, and the other end is connected to a glue injection port, and the glue injection port is arranged on the upper surface of the runner plate.

[0012] Further preferably, the clamp gate injection mold further includes a female mold core insert and a female mold core pin. The female mold core pin is arranged in the middle of the female mold core insert, and the female mold core insert is arranged in the middle of the runner insert. The runner insert, the female mold core insert and the female mold core pin together form the mold cavity.

[0013] Further preferably, the clamp gate injection mold further includes a sprue hook pin, and the bottom of the sprue hook pin is connected to the runner.

[0014] Further preferably, the clamp gate injection mold further includes a sprue hook pin plate and a panel. The sprue hook pin plate is fixedly connected to the panel. The sprue hook pin plate is arranged above the runner plate. The upper end of the sprue hook pin is clamped with the panel, and the lower end of the sprue hook pin is arranged inside the sprue hook pin plate.

[0015] Further preferably, the clamp gate injection mold includes a female mold plate and a male mold plate. The runner plate and the female mold core are fixedly arranged in the middle of the female mold plate, and the lower surface of the female mold plate and the lower surface of the mold cavity are arranged on the male mold plate.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The structure of the present utility model is stable and reliable. By adopting the clamp gate, the injection stress loss can be reduced, it is convenient to separate from the product, and it is easy to demold. It can not only eliminate the need for manual trimming of the gate but also ensure the accuracy of the lens barrel mold cavity, reducing the product molding cost. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic structural diagram of the clamp gate injection mold provided by the present utility model;

[0020] Figure 2 is Figure 1 a partial enlarged view in

[0021] Figure 3Schematic diagram of the nozzle hook needle, runner and clamp gate provided by the present utility model;

[0022] Figure 4 Schematic diagram of the runner and clamp gate provided by the present utility model;

[0023] Figure 5 Partial structure assembly schematic diagram of the clamp gate injection mold provided by the present utility model;

[0024] Illustration description: 101 - nozzle hook needle, 102 - nozzle hook needle plate, 103 - female template, 104 - runner plate, 1041 - injection port, 105 - panel, 201 - mold cavity, OO - first vertical direction, 202 - clamp gate, 2021 - first component, 2022 - second component, 203 - runner, 301 - female mold core, 302 - runner insert, 303 - female mold core insert, 304 - female mold core pin, 401 - male template.

[0025] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific embodiments

[0026] To better understand the present utility model, more detailed descriptions will be made on various aspects of the present utility model with reference to the drawings. It should be understood that these detailed descriptions are only descriptions of the embodiments of the present utility model and do not limit the scope of the present utility model in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, the above terms should not be construed as limiting the present utility model.

[0028] It should also be understood that the terms "comprise", "comprises", "include", "includes", "have", "has", "contain" and / or "contains", when used in this specification, denote the presence of the stated features, elements and / or components, but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. In addition, when an expression such as "at least one of..." appears after a list of listed features, it modifies the entire list of listed features rather than an individual element in the list. In addition, when describing embodiments of the present invention, the use of "may" means "one or more embodiments of the present invention". Also, the term "exemplary" is intended to refer to an example or illustration.

[0029] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0030] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0031] As Figures 1 to 5 shown, the present invention provides a pliers-shaped gating mold, which includes a female mold core 301, a runner insert 302, a cavity 201, a runner plate 104, a runner 203 and a pliers-shaped gate 202. The cavity 201 is formed in the middle of the runner insert 302. The cavity 201 includes a first vertical direction OO. The runner insert 302 is fixed in the middle of the female mold core 301. The runner plate 104 is arranged on the top of the runner insert 302 and the female mold core 301. The runner 203 is arranged in the runner plate 104. The pliers-shaped gate 202 includes a first component 2021 and a second component 2022 that are in communication with each other. The connection part of the first component 2021 and the second component 2022 is an arc structure. The first component 2021 is arranged in the runner plate 104 and the runner insert 302. The second component 2022 is arranged in the runner insert 302. The first component 2021 is in communication with the runner 203. The second component 2022 is in communication with the cavity 201. The included angle between the second component 2022 and the first vertical direction OO is 50° - 75°. The pliers-shaped gate 202 designed in this way can reduce the loss of injection stress. The purpose of the included angle design of the second component 2022 is to consider that the pliers-shaped gate 202 is convenient for separating from the product (lens barrel) and easy to demold; at the same time, it is convenient to separate the second component 2022 from the injection molded product and convenient for the gate to be disconnected.

[0032] For easier demolding, the angle between the first component 2021 and the first vertical direction OO is 1° to 5°. The purpose of this angle design is to facilitate the separation of the pliers gate 202 from the product, enabling the pliers gate 202 and the product to be separated without shearing, which is conducive to demolding. At the same time, it is also convenient to detach the pliers gate 202 from the runner insert 302 and the runner plate 104.

[0033] More specifically, the opening size at the connection between the second component 2022 and the mold cavity 201 is 0.6 mm to 1 mm, ensuring better entry of the rubber material into the mold cavity 201. If the feed port is too small, the mold cavity 201 will not be fully filled, and if it is too large, it will be difficult to break the gate.

[0034] More specifically, there are multiple pliers gates 202, and multiple second components 2022 are evenly distributed around the mold cavity 201, which improves production efficiency, ensures smooth filling of the rubber material, and can also avoid shrinkage holes or air bubbles on the product.

[0035] For the convenience of production, the runner 203 and the pliers gate 202 are integrally formed.

[0036] More specifically, a guide through-hole is provided inside the runner plate 104. One end of the guide through-hole is connected to the runner, and the other end is connected to a rubber injection port 1041. The rubber injection port 1041 is provided on the upper surface of the runner plate 104 and is in communication with the outside through the runner plate 104 to achieve better addition of the rubber material.

[0037] More specifically, the pliers gate injection mold further includes a female mold core insert 303 and a female mold core pin 304. The female mold core pin 304 is arranged in the middle of the female mold core insert 303, and the female mold core insert 303 is arranged in the middle of the runner insert 302. The runner insert 302, the female mold core insert 303, and the female mold core pin 304 together form the mold cavity 201. With the above structure, the accuracy of the mold cavity 201 is ensured, and the machining accuracy of the product (lens barrel) is guaranteed.

[0038] More specifically, the pliers gate injection mold further includes a sprue hook pin 101, and the bottom of the sprue hook pin 101 is connected to the runner 203. By driving the runner 203 and the pliers gate 202 to move through the sprue hook pin 101, it is convenient to break the gate of the molded product.

[0039] More specifically, the pliers gate injection mold further includes a sprue hook pin plate 102 and a panel 105. The sprue hook pin plate 102 is fixedly connected to the panel 105. The sprue hook pin plate 102 is arranged above the runner plate 104. The upper end of the sprue hook pin 101 is clamped to the panel 105, and the lower end of the sprue hook pin 101 is arranged inside the sprue hook pin plate 102. By connecting the sprue hook pin 101 through the panel 105, it is convenient for an external force to act on the sprue hook pin 101, facilitating the breaking of the product gate.

[0040] More specifically, the clamp gate injection mold includes a female template 103 and a male template 401. The runner plate 104 and the female mold core 301 are fixedly arranged in the middle of the female template 103. The lower surface of the female template 103 and the lower surface of the mold cavity 201 are arranged on the male template 401.

[0041] During operation, the rubber material enters the runner and the clamp gate 202 through the runner plate 104, and then enters the mold cavity 201 through the clamp gate 202. Specifically, the rubber material enters the runner through the injection port 1041 and the guide through hole on the runner plate 104, and then is injected into the mold cavity 201 through the clamp gate 202; after the rubber material cools, the rubber material in the mold cavity 201 solidifies and forms an injection molded product with the same shape as the mold cavity 201; the plastic in the clamp runner also solidifies and forms a runner with the same shape as the clamp runner; generally, the connection position between the injection molded product and the runner 203 is relatively weak; when the mold is opened, as Figure 2 shown, first, it is parted from the B-B plane. Under the action of the mold opening force, the sprue hook 101 drives the runner 203 / clamp gate 202. After the clamp runner breaks away from the injection molded product, it undergoes a certain deformation and gradually rises along the arc section of the clamp runner, and finally the runner and the clamp gate 202 are completely separated from the runner plate 104 and the runner insert 302. After being separated by a certain distance; the limit pin is used to drive the sprue hook 101 to separate along the parting plane A-A, so that the runner 203 / clamp gate 202 is removed; continue to open the mold, separate the female template 103 and the male template 401, and then eject the injection molded product from the mold cavity 201, and the next injection operation can be carried out.

[0042] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A clamp-shaped glue-feeding mold, characterized in that: The invention comprises a mother mold core (301), a flow channel insert (302), a mold cavity (201), a flow channel plate (104), a flow channel (203) and a clamp gate (202), wherein the mold cavity (201) is formed in the middle of the flow channel insert (302), the mold cavity (201) comprises a first vertical direction (OO), the flow channel insert (302) is fixed in the middle of the mother mold core (301), the flow channel plate (104) is arranged on the top of the flow channel insert (302) and the mother mold core (301), the flow channel (203) is arranged in the flow channel plate (104), and the clamp gate (202) comprises mutually conductive A first component (2021) and a second component (2022), wherein the connection between the first component (2021) and the second component (2022) is an arc-shaped structure, the first component (2021) is arranged in the flow channel plate (104) and the flow channel insert (302), the second component (2022) is arranged in the flow channel insert (302), the first component (2021) is connected to the flow channel (203), the second component (2022) is connected to the mold cavity (201), and the angle between the second component (2022) and the first vertical direction (OO) is 50° to 75°.

2. A clamp-shaped glue injection mold according to claim 1, characterized in that: The angle between the first component (2021) and the first vertical direction (OO) is 1° to 5°.

3. The clamp-shaped glue injection mold according to claim 1, characterized in that: The size of the opening at the connection between the second component (2022) and the mold cavity (201) is 0.6 mm to 1 mm.

4. The clamp-shaped glue injection mold according to claim 1, characterized in that: The clamp-shaped gate (202) includes a plurality of second parts (2022), and the plurality of second parts (2022) are evenly distributed around the mold cavity (201).

5. The clamp-shaped glue injection mold according to claim 1, characterized in that: The runner (203) and the clamp-shaped gate (202) are integrally formed.

6. The clamp-shaped glue injection mold according to claim 1, characterized in that: A conducting hole is provided inside the flow channel plate (104); one end of the conducting hole is connected to the flow channel (203); the other end is connected to a glue injection port (1041); and the glue injection port (1041) is provided on the upper surface of the flow channel plate (104).

7. The clamp-shaped glue injection mold according to claim 1, characterized in that: The clamp-shaped glue-feeding mold also includes a mother mold core insert (303) and a mother mold core insert pin (304), wherein the mother mold core insert pin (304) is arranged in the middle of the mother mold core insert (303), and the mother mold core insert (303) is arranged in the middle of the flow channel insert (302), and the flow channel insert (302), the mother mold core insert (303) and the mother mold core insert pin (304) are combined to form the mold cavity (201).

8. The clamp-shaped glue injection mold according to claim 1, characterized in that: The clamp-shaped glue-feeding mold further comprises a sprue hook needle (101), and the bottom of the sprue hook needle (101) is connected to the flow channel (203).

9. The clamp-shaped glue injection mold according to claim 8, characterized in that: The clamp-shaped glue injection mold also includes a sprue hook plate (102) and a panel (105), the sprue hook plate (102) is fixedly connected to the panel (105), the sprue hook plate (102) is arranged above the flow channel plate (104), the upper end of the sprue hook (101) is clamped with the panel (105), and the lower end of the sprue hook (101) is arranged inside the sprue hook plate (102).

10. The clamp-shaped molding die according to claim 1, characterized in that: The clamp-shaped glue injection mold also includes a female mold plate (103) and a male mold plate (401), the flow channel plate (104) and the female mold core (301) are fixedly arranged in the middle of the female mold plate (103), and the lower surface of the female mold plate (103) and the lower surface of the mold cavity (201) are arranged on the male mold plate (401).

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