Injection mold for flat water storage elbow

Abstract

The flat water storage elbow injection mold comprises a male mold core, a female mold core, a cavity arranged on the female mold core, and a mold suction prevention mechanism arranged on the female mold core and used for limiting an injection molding part on the female mold core during mold opening, the mold suction prevention mechanism comprises an angle pin and an angle pin seat arranged on a rear mold, and the mold suction prevention mechanism is arranged on the male mold core and used for limiting the injection molding part on the female mold core. An insert part is arranged at one end of the angle pin, the other end of the angle pin is connected with the angle pin seat, and the insert part comprises a cavity surface positioned on the cavity and a concave cavity formed in the cavity surface. According to the flat water storage elbow injection mold provided by the utility model, during injection molding, molten plastic can enter the cavity and the concave cavity at the same time, so that the bulge is formed. When the mold is opened, the upper mold is separated from the lower mold, the male mold core is separated from the female mold core, and at the moment, the bulge is embedded into the concave cavity, so that the grabbing force is improved, an injection molding part cannot move along with the male mold core, and the effect of preventing mold suction is achieved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a flat water trap elbow injection mold. Background Art

[0002] For the flat water trap, due to its hollow and curved structure, it is usually divided into two cavities during mold design, each forming an injection molded part of half of the flat water trap, and the two injection molded parts can be combined to form the flat water trap. Since the width of the flat water trap is deep, that is, the depth of the cavity. When opening the mold, mold suction is prone to occur, and the injection molded part is adsorbed on the male mold core, making it difficult to demold. The inside of the flat water trap needs to be kept smooth, so the ejector pin cannot be set on the male mold core, which makes it difficult to demold through the ejector pin structure. Utility Model Content

[0003] In order to solve the above problems, the technical solution provides a flat water trap elbow injection mold.

[0004] To achieve the above purpose, the technical solution is as follows:

[0005] The invention discloses an injection mold for a flat water trap elbow, comprising a male mold core, a female mold core, a cavity arranged on the female mold core, and an anti-mold suction mechanism arranged on the female mold core and used to limit the injection molded part on the female mold core when the mold is opened. The anti-mold suction mechanism comprises an inclined pin and an inclined pin seat arranged on the rear mold. An insert part is arranged on one end of the inclined pin and the other end is connected to the inclined pin seat. The insert part comprises a cavity surface located on the cavity and a concave cavity arranged on the cavity surface.

[0006] In the flat water trap elbow injection mold as described above, the length direction of the cavity is curved, and a plurality of anti-mold suction mechanisms are alternately arranged in sequence corresponding to the outer bend and the inner bend of the cavity.

[0007] In the flat water trap injection mold as described above, the multiple cavities are distributed in sequence along the demoulding direction.

[0008] In the flat trap elbow injection mold as described above, the concave cavity is communicated with the mold cavity, the concave cavity is in an elongated strip shape, and extends along the length direction of the mold cavity.

[0009] As described above, in the flat trap elbow injection mold, the cavity comprises a bottom surface, and a lower side surface and an upper side surface connecting two sides of the bottom surface, and the upper side surface is inclined toward the mold opening direction so that the opening of the cavity is gradually enlarged.

[0010] In the flat trap elbow injection mold as described above, the lower side surface is inclined toward the mold closing direction so that the opening of the cavity gradually increases, and the inclination of the lower side surface is smaller than the inclination of the upper side surface.

[0011] As described above, the flat water trap elbow injection mold has cavities at both ends of the cavity for the male mold core to be embedded. When the mold is closed, the male mold core is inserted into the cavity to separate the cavity from the cavity. When the mold is opened, the male mold core is separated from the cavity to connect the cavity to the cavity.

[0012] The flat water trap elbow injection mold as described above also includes an ejector mechanism, and the anti-mold suction mechanism moves synchronously with the ejector mechanism. After the ejector mechanism ejects the injection molded part, the anti-mold suction mechanism supports the injection molded part to prevent the injection molded part from falling.

[0013] In the flat water trap elbow injection mold as described above, the ejector mechanism includes a lower ejector plate and an ejector provided on the lower ejector plate, and the ejector is provided corresponding to the bottom of the cavity.

[0014] In the flat water trap elbow injection mold as described above, the ejector pin and the oblique pin are arranged in a staggered manner.

[0015] The beneficial effects of this application are:

[0016] The utility model provides a flat water trap elbow injection mold. During injection molding, the molten plastic will enter the mold cavity and also enter the concave cavity to form a bulge. When the mold is opened, the upper mold and the lower mold are separated, and the male mold core and the female mold core are separated. At this time, the bulge is embedded in the concave cavity, which improves the gripping force, so that the injection molded part will not move with the male mold core, and the effect of preventing mold suction is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0018] Figure 1 It is a structural schematic diagram of a flat water trap elbow injection mold;

[0019] Figure 2 This is the internal structure diagram of the flat water trap elbow injection mold;

[0020] Figure 3 It is a cross-sectional view of the inclined pin. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The flat water trap elbow injection mold includes a male mold core 1, a female mold core 2, a cavity 3 arranged on the female mold core 2, and an anti-mold suction mechanism 4 arranged on the female mold core 2 and used to limit the injection molded part on the female mold core 2 when the mold is opened. The anti-mold suction mechanism 4 includes an inclined pin 41 and an inclined pin seat 42 arranged on the rear mold. One end of the inclined pin 41 is provided with an insert part 43, and the other end is connected to the inclined pin seat 42. The insert part 43 includes a cavity surface 421 located on the cavity 3, and a concave cavity 422 arranged on the cavity surface 421.

[0023] The utility model provides a flat water trap elbow injection mold. During injection molding, the molten plastic will enter the mold cavity and also enter the concave cavity to form a bulge. When the mold is opened, the upper mold and the lower mold are separated, and the male mold core and the female mold core are separated. At this time, the bulge is embedded in the concave cavity, which improves the gripping force, so that the injection molded part will not move with the male mold core, and the effect of preventing mold suction is achieved.

[0024] Further, as a preferred embodiment of the present solution but not limiting, the longitudinal direction of the cavity 3 is curved, and the plurality of anti-mold suction mechanisms 4 are alternately arranged in sequence corresponding to the outer and inner bends of the cavity 3. The mold suction is most serious at the bends.

[0025] Further, as a preferred embodiment of the present invention but not limiting, the plurality of concave cavities 422 are sequentially distributed along the demoulding direction to increase the pulling force on the injection molded part and prevent the injection molded part from being adsorbed on the male mold core.

[0026] Further, as a preferred implementation of the present solution but not a limitation, the concave cavity 422 is connected to the mold cavity 3 , and the concave cavity 422 is in an elongated strip shape and extends along the length direction of the mold cavity 3 .

[0027] Further, as a preferred embodiment of the present invention but not limiting, the cavity 422 includes a bottom surface 4221, and a lower side surface 4222 and an upper side surface 4223 connecting the bottom surface 4221, and the upper side surface 4223 is inclined toward the mold opening direction so that the opening of the cavity 422 is gradually enlarged, which facilitates the subsequent injection molding to remove the oblique pin.

[0028] Further, as a preferred embodiment of the present invention but not limiting, the lower side surface 4222 is inclined toward the mold closing direction so that the opening of the cavity 422 is gradually enlarged, and the inclination of the lower side surface 4222 is smaller than that of the upper side surface 4223. This facilitates the subsequent ejection of the oblique pin from the injection molded part.

[0029] Further, as a preferred embodiment of the present invention but not limiting, cavities 5 are provided at both ends of the mold cavity 3 for the male mold core 1 to be embedded in. When the mold is closed, the male mold core 1 is inserted into the cavity 5 to separate the mold cavity 3 from the mold cavity 3. When the mold is opened, the male mold core 1 is separated from the cavity 5 to connect the mold cavity 3 with the mold cavity 3. This prevents the end from sucking the mold.

[0030] Furthermore, as a preferred embodiment of the present invention but not limited thereto, it further includes an ejector mechanism 6, the anti-mold suction mechanism 4 moves synchronously with the ejector mechanism 6, and after the ejector mechanism 6 ejects the injection molded part, the anti-mold suction mechanism 4 supports the injection molded part to limit the injection molded part from falling, thereby preventing the injection molded part from falling and causing damage.

[0031] Further, as a preferred implementation of the present solution but not limiting, the ejector mechanism 6 includes a lower ejector plate 61 and an ejector 62 disposed on the lower ejector plate 61 , and the ejector 62 is disposed corresponding to the bottom of the cavity 3 .

[0032] Further, as a preferred implementation manner of the present solution but not a limitation, the ejector pin 62 and the oblique pin 41 are arranged in a staggered manner.

[0033] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are within the protection scope of the present application.

Claims

1. Flat water trap elbow injection mold, characterized by: The invention comprises a male mold core (1), a female mold core (2), a mold cavity (3) arranged on the female mold core (2), and an anti-mold suction mechanism (4) arranged on the female mold core (2) and used for limiting the injection molded part on the female mold core (2) when the mold is opened. The anti-mold suction mechanism (4) comprises an inclined pin (41) and an inclined pin seat (42) arranged on the rear mold. An insert part (43) is arranged on one end of the inclined pin (41) and the other end is connected to the inclined pin seat (42). The insert part (43) comprises a mold cavity surface (421) located on the mold cavity (3) and a concave cavity (422) arranged on the mold cavity surface (421).

2. The flat water trap injection mold according to claim 1, characterized in that: The length direction of the mold cavity (3) is in a curved shape, and a plurality of the anti-mold suction mechanisms (4) are arranged alternately and spaced in sequence corresponding to the outer bend and the inner bend of the mold cavity (3).

3. The flat water trap injection mold according to claim 1, characterized in that: The plurality of concave cavities (422) are distributed in sequence along the demoulding direction.

4. The flat water trap injection mold according to claim 1, characterized in that: The concave cavity (422) is communicated with the mold cavity (3); the concave cavity (422) is in an elongated strip shape and extends along the length direction of the mold cavity (3).

5. The flat water trap injection mold according to claim 4, characterized in that: The concave cavity (422) comprises a bottom surface (4221), and a lower side surface (4222) and an upper side surface (4223) connecting two sides of the bottom surface (4221), and the upper side surface (4223) is inclined in the mold opening direction so that the opening of the concave cavity (422) is gradually enlarged.

6. The flat water trap injection mold according to claim 5, characterized in that: The lower side surface (4222) is inclined toward the mold closing direction so that the opening of the cavity (422) gradually increases, and the inclination of the lower side surface (4222) is smaller than the inclination of the upper side surface (4223).

7. The flat water trap injection mold according to claim 1, characterized in that: Both ends of the mold cavity (3) are provided with cavities (5) for the male mold core (1) to be inserted into. When the mold is closed, the male mold core (1) is inserted into the cavity (5) to separate the mold cavity (3) from the mold cavity (3). When the mold is opened, the male mold core (1) is separated from the cavity (5) to connect the mold cavity (3) to the mold cavity (3).

8. The flat water trap injection mold according to claim 1, characterized in that: It also includes an ejector mechanism (6), the anti-mold suction mechanism (4) and the ejector mechanism (6) move synchronously, and after the ejector mechanism (6) ejects the injection molded part, the anti-mold suction mechanism (4) supports the injection molded part to prevent the injection molded part from falling.

9. The flat water trap injection mold according to claim 8, characterized in that: The ejector mechanism (6) comprises a lower ejector plate (61) and an ejector pin (62) arranged on the lower ejector plate (61), wherein the ejector pin (62) is arranged corresponding to the bottom of the cavity (3).

10. The flat water trap injection mold according to claim 9, characterized in that: The ejector pin (62) and the oblique pin (41) are arranged in a staggered manner.

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