In-mold injection molding and trimming integrated mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an in-mold injection molding and trimming integrated mold. Comprising a front mold and a rear mold, the membrane is arranged in an injection molding area formed by matching the front mold and the rear mold; a blade is arranged in the front mold and is attached to the diaphragm; the blade is provided with a knife edge formed by combining a concave part with a convex part, and the shape of the knife edge is matched with the shape of an injection molding point in the membrane, so that injection molding and edge cutting are directly and synchronously carried out in a mold, the production period is shortened, the production efficiency is remarkably improved, the production steps are reduced, and materials are saved; and the production cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an in-film injection molding and trimming integrated mold. Background Art

[0002] In the prior art, injection molding and trimming are two independent processes, which not only leads to low production efficiency but also increases production costs. After the injection molding is completed, the injection molded parts need to be transferred to the trimming equipment, which is prone to cause quality instability problems, such as dimensional deviation, appearance defects, etc.

[0003] In addition, the design of traditional molds is often complex and has great limitations, making it difficult to meet diversified production needs, and the adjustment costs are often too high. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated mold for in-mold injection molding and trimming in view of the defects existing in the prior art, so that injection molding and trimming can be carried out directly and simultaneously in the mold, shortening the production cycle, significantly improving production efficiency, reducing production steps and saving materials, and effectively reducing production costs.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an integrated mold for in-membrane injection molding and trimming, including a front mold and a rear mold; a diaphragm is arranged in an injection molding area formed by the cooperation of the front mold and the rear mold; a blade is arranged in the front mold to fit the diaphragm; a cutting edge formed by a concave and a convex is arranged on the blade, and the shape of the cutting edge is adapted to the shape of the injection molding point in the diaphragm.

[0006] Furthermore, the blade is larger than the diaphragm and covers the diaphragm.

[0007] Furthermore, the thickness of the diaphragm is set to 0.29-0.31 mm.

[0008] Furthermore, the thickness of the diaphragm is set to 0.3 mm.

[0009] Furthermore, the height of the knife edge is controlled to be less than 0.02 mm of the thickness of the diaphragm.

[0010] Furthermore, the diaphragm is fixed by a needle sleeve.

[0011] Furthermore, the structure of the flow channel is adapted to the shape change of the injection point in the diaphragm.

[0012] The method comprises a front mold and a rear mold; a diaphragm is arranged in an injection molding area formed by the front mold and the rear mold; a blade is arranged in the front mold to fit the diaphragm; a knife edge formed by a concave and a convex is arranged on the blade, and the shape of the knife edge is adapted to the shape of the injection molding point in the diaphragm, so that injection molding and trimming are directly and synchronously carried out in the mold, the production cycle is shortened, the production efficiency is significantly improved, the production steps are reduced, materials are saved, and the production cost is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of an integrated mold for trimming of in-film injection molding according to the utility model;

[0015] Figure 2 It is a rear view of an integrated mold for trimming of in-film injection molding according to the utility model;

[0016] Figure 3 It is a schematic diagram of an integrated mold for trimming of in-mold injection molding according to the utility model without a rear mold;

[0017] Figure 4 It is a schematic diagram of a blade of an integrated mold for trimming of in-film injection molding according to the utility model;

[0018] Reference numerals:

[0019] Front mold 1, rear mold 2, diaphragm 3, blade 4, blade edge 4-1, needle sleeve 5, flow channel 6. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation on the present invention.

[0022] An integrated mold for trimming of film injection molding, such as Figure 1 , 3 As shown, it includes a front mold 1 and a rear mold 2; a diaphragm 3 is arranged in an injection molding area formed by the front mold 1 and the rear mold 2; a blade 4 is arranged in the front mold 1 to fit the diaphragm 3; a cutting edge 4-1 formed by a concave and a convex is arranged on the blade 4, and the shape of the cutting edge 4-1 is adapted to the shape of the injection molding point in the diaphragm 3.

[0023] Specifically, the front mold 1 and the rear mold 2 are included; the diaphragm 3 is arranged in the injection molding area formed by the front mold 1 and the rear mold 2; the front mold 1 is provided with a blade 4 to fit the diaphragm 3; the blade 4 is provided with a knife edge 4-1 formed by a concave and a convex, and the shape of the knife edge 4-1 is adapted to the shape of the injection molding point in the diaphragm 3, so that the shape of the knife edge 4-1 is adapted and matched with the shape of the injection molding point in the diaphragm 3, so that the injection molding and trimming are carried out synchronously, which greatly simplifies the production process and improves the production efficiency; and because the blade 4 is closely fitted with the diaphragm 3, and the shape of the knife edge 4-1 is adapted to the shape of the injection molding point in the diaphragm 3, high-precision trimming operation can be achieved, the dimensional accuracy and appearance quality of the injection molded parts are guaranteed, and more stringent production requirements are met. At the same time, because the trimming and injection molding are carried out synchronously, the production cycle can be greatly reduced and the production efficiency can be improved. In addition, the integrated design also reduces the time for mold replacement and adjustment, further improving the production efficiency. And because injection molding and trimming are completed simultaneously in the mold, the stability and consistency of the product are further improved.

[0024] As a preferred embodiment of the above, Figure 3 As shown, the blade 4 is larger than the diaphragm 3 and covers the diaphragm 3 .

[0025] Specifically, the size of the blade 4 is larger than the diaphragm 3, and the diaphragm 3 is covered to provide additional support for the diaphragm 3. The coverage of the blade ensures that the diaphragm can be more stably maintained in the mold and is not easily displaced or deformed, thereby ensuring the accuracy and stability of the injection molded part. And because the coverage area of ​​the blade 4 is larger than the diaphragm 3, the injection molded part can be more fully contacted and cut during trimming, ensuring the integrity and accuracy of the trimming. In particular, for the edge of the injection molded part, the full coverage of the blade helps to reduce the situation of uneven trimming or residual excess material.

[0026] As a preferred embodiment of the above, Figure 3 As shown, the thickness of the diaphragm 3 is set to 0.29-0.31 mm.

[0027] As a preferred embodiment of the above, Figure 3 As shown, the thickness of the diaphragm 3 is set to 0.3 mm.

[0028] As a preferred embodiment of the above, Figure 3 As shown, the height of the knife edge 4 - 1 is controlled to be less than 0.02 mm of the thickness of the diaphragm 3 .

[0029] Specifically, by setting the thickness of the diaphragm 3 to 0.29-0.31 mm, preferably 0.3 mm, the height of the blade 4-1 is controlled to be less than 0.02 mm of the thickness of the diaphragm 3, so that after the injection molded part is cooled and solidified in the mold, the blade 4-1 can accurately cut along the edge of the injection molded part. This tiny gap ensures the accuracy and consistency of the cutting edge, and avoids the problem of incomplete cutting edge caused by cutting edge too deep or too low due to the blade being too high. And further, the injection molded part in the diaphragm is semi-connected to the diaphragm, and it is not completely cut off in the mold, so that it is easy to remove the injection molded part from the mold, and after removing the mold, the injection molded part can be easily ejected and separated.

[0030] As a preferred embodiment of the above, Figure 3 As shown, the diaphragm 3 is fixed by a needle sleeve 5 .

[0031] Specifically, the structure in which the diaphragm 3 is fixed by the needle sleeve 5 further increases the stability of the diaphragm 3 in the mold.

[0032] As a preferred embodiment of the above, Figure 1 As shown, the structure of the flow channel 6 is adapted to the shape change of the injection point in the diaphragm 3 .

[0033] Specifically, the structure of the flow channel 6 is adapted to the shape of the injection point in the diaphragm 3, so that the mold is suitable for different injection molded parts, thereby further improving the overall applicability.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An integrated mold for in-mold injection molding and trimming, characterized in that: It comprises a front mold (1) and a rear mold (2); The diaphragm (3) is arranged in an injection molding area formed by the cooperation of the front mold (1) and the rear mold (2); A blade (4) is provided in the front mold (1) and fits the diaphragm (3); The blade (4) is provided with a cutting edge (4-1) formed by a concave and a convex, and the shape of the cutting edge (4-1) is adapted to the shape of the injection point in the diaphragm (3).

2. The integrated mold for trimming of in-film injection molding according to claim 1, characterized in that: The blade (4) is larger than the diaphragm (3) and covers the diaphragm (3).

3. The integrated mold for trimming of in-film injection molding according to claim 2, characterized in that: The thickness of the diaphragm (3) is set to 0.29-0.31 mm.

4. The integrated mold for trimming of in-film injection molding according to claim 3, characterized in that: The thickness of the diaphragm (3) is set to 0.3 mm.

5. The integrated mold for trimming of in-film injection molding according to claim 4, characterized in that: The height of the knife edge (4-1) is controlled to be less than 0.02 mm of the thickness of the diaphragm (3).

6. The integrated mold for trimming of in-film injection molding according to claim 1, characterized in that: The diaphragm (3) is fixed by a needle sleeve (5).

7. The integrated mold for trimming of in-film injection molding according to claim 1, characterized in that: The structure of the flow channel (6) adapts to the shape change of the injection point in the diaphragm (3).

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