Production mold for insert injection molding

Abstract

The utility model discloses a production mould for insert injection molding, which comprises an upper mould and a lower mould, an injection molding groove is arranged between the upper mould and the lower mould, the bottom of the injection molding groove is provided with a mounting hole, a fixing mechanism for fixing an insert is arranged in the mounting hole, the bottom of the injection molding groove is also provided with a support column, and the support column is provided with a plurality of through holes. The fixing mechanism comprises an insert pin and a spring piece, a through hole is formed in the insert pin, the spring piece is arranged in the through hole, the upper half portion of the spring piece is of a U-shaped structure, protrusions are arranged on the outer portions of the two sides of the upper half portion of the U-shaped structure of the spring piece, and the protrusions extend out of the insert pin from the through hole. According to the production mold, the fixing mechanism is arranged at the bottom of the injection molding groove used for containing the insert, the insert pin of the fixing mechanism can be used for containing the insert, the spring piece of the fixing piece can fix the insert on the insert pin, and the situation that when the upper mold and the lower mold are closed, the insert displaces in the mold, and consequently an injection molding product is unqualified is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to hardware machining technical field, concretely relates to a production mould for insert injection moulding. BACKGROUND

[0002] The process of injection molding of metal inserts is to place the metal inserts into the lower mold first, then cover the upper mold onto the lower mold, clamp the mold, and then injection mold the clamped upper mold and lower mold. The existing metal inserts will loosen or even move away from the original position when the mold is clamped due to the vibration of the mold, resulting in unqualified products. SUMMARY

[0003] To solve the problem of the existing insert not being placed firmly enough in the mold, the utility model provides a production mold for insert injection molding. The specific technical scheme of the utility model is as follows:

[0004] A production mold for insert injection molding, comprising: an upper mold and a lower mold, an injection molding groove is provided between the upper mold and the lower mold, a mounting hole is provided at the bottom of the injection molding groove, a fixing mechanism for fixing the insert is provided in the mounting hole, the fixing mechanism comprises a needle and a spring sheet, a through hole is provided in the needle, the spring sheet is provided in the through hole, the upper half of the spring sheet is in U-shaped structure, protrusions are provided on both sides of the upper half of the U-shaped structure of the spring sheet, and the protrusions extend out of the needle from the through hole.

[0005] Further, the injection molding groove is long strip-shaped, the mounting holes are respectively provided at both ends of the injection molding groove, and a supporting column is further provided between the mounting holes.

[0006] Further, an annular placement seat is provided at the outlet of the mounting hole, and the protrusions are located above the placement seat.

[0007] Further, the upper end of the needle is a circular truncated cone-shaped guide portion, and the protrusions are located below the guide portion.

[0008] Further, two injection molding grooves are provided on the upper mold and the lower mold, and the two injection molding grooves are connected.

[0009] Further, a placement groove is further provided at one side of the bottom of the injection molding groove.

[0010] Further, guide grooves for guiding the upper mold are provided on both sides of the lower mold, and guide blocks matched with the guide grooves are provided on the upper mold.

[0011] Compared with the prior art, the production mold has the beneficial effects that the fixed mechanism is arranged at the bottom of the injection slot for placing the insert, the insert can be placed on the insert pin of the fixed mechanism, the spring sheet of the fixed mechanism can fix the insert on the insert pin, and the insert is prevented from being displaced in the mold when the upper mold and the lower mold are combined, so that the injection product is not unqualified. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 For the structure of the production mold in an embodiment of the utility model Figure 1 ;

[0013] Figure 2 For the structure of the production mold in an embodiment of the utility model Figure 2 ;

[0014] Figure 3 For the sectional view of the production mold in an embodiment of the utility model;

[0015] Figure 4 For the structure of the fixed mechanism in an embodiment of the utility model;

[0016] Figure 5 For the exploded view of the fixed mechanism in an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The embodiments of the utility model are described in detail below, and the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout.

[0018] In the description of the utility model, it should be explained that, for the orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0019] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of "at least" is one or more, unless otherwise specifically limited.

[0020] In the utility model, except another explicit provision and limitation, if there are terms "assemble", "connect" and "connect" terms should be understood in a broad sense, for example, it can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be directly connected, can be connected through the intermediate medium, can be two elements internally connected. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0021] In the utility model, unless otherwise specified and limited, the "upper" or "lower" of the first feature of the second feature can include that the first and second features are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "lower" and "upper" of the first feature of the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than the height of the second feature. The "upper", "lower" and "lower" of the first feature of the second feature include that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than the second feature.

[0022] The technical scheme of the utility model and its beneficial effects are more clear and explicit by further describing the specific embodiments of the utility model in combination with the drawings of the specification. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0023] As shown in Figures 1 to 5 A production mold for insert 12 injection molding, comprising: upper mold 1 and lower mold 2, injection slot 3 is arranged between upper mold 1 and lower mold 2, injection slot 3 is arranged in lower mold 2, upper mold 1 is used for closing injection slot 3, the bottom of injection slot 3 is provided with mounting hole 4, fixing mechanism 5 for fixing insert 12 is arranged in mounting hole 4, fixing mechanism 5 comprises pin 6 and spring sheet 7, through hole 8 is arranged in pin 6, spring sheet 7 is arranged in through hole 8, the upper half of the U-shaped structure of spring sheet 7 is provided with protrusion 9 on both sides of the outer portion, protrusion 9 extends out of pin 6 from through hole 8. When placing insert 12 in lower mold 2, the round hole 10 of the insert 12 is sleeved on the pin 6, when the insert 12 moves downward in the pin 6, the protrusion 9 of the spring sheet 7 is pressed, so that the protrusion 9 shrinks into the through hole 8 of the pin 6, and the round hole 10 of the insert 12 is conveniently completely inserted into the pin 6; when the round hole 10 of the insert 12 passes through the protrusion 9, the protrusion 9 will again extend from the through hole 8, and the insert 12 is limited on the pin 6, preventing the insert 12 from moving randomly, and the practicability is high.

[0024] As one of the embodiments, the injection slot 3 is long strip-shaped, the mounting holes 4 are respectively arranged at two ends of the injection slot 3, and the supporting column 11 is further arranged between the mounting holes 4. The fixed mechanism 5 is arranged at each end of the injection slot 3, so that the stability of the insert 12 in the injection slot 3 is improved. The supporting column 11 can provide stable support for the insert 12, and the round hole 10 of the insert 12 can be placed, so that the round hole 10 of the insert 12 is prevented from being wrapped by the plastic.

[0025] As one of the embodiments, the annular placing seat 13 is arranged at the outlet of the mounting hole 4, and the protrusion 9 is located above the placing seat. The annular placing seat 13 can keep a certain distance between the bottom surface of the insert 12 and the top of the injection slot 3, so that the insert 12 is completely wrapped by the plastic.

[0026] As one of the embodiments, the upper end of the inlay needle 6 is a circular truncated cone-shaped guide portion 14, and the protrusion 9 is located below the guide portion 14. The circular truncated cone-shaped guide portion 14 can facilitate the insert 12 to enter the inlay needle 6.

[0027] As one of the embodiments, the upper die 1 and the lower die 2 are provided with two injection slots 3, and the two injection slots 3 are communicated, so that the injection efficiency is improved.

[0028] As one of the embodiments, the bottom side of the injection slot 3 is further provided with the placing slot 15, so that the injection slot 3 can place the L-shaped insert 12.

[0029] As one of the embodiments, the lower die 2 is provided with the guide slot 16 for guiding the upper die 1, and the upper die 1 is provided with the guide block 17 matched with the guide slot 16, so that the upper die 1 and the lower die 2 are conveniently clamped.

[0030] The production die described in the application is provided with the fixed mechanism 5 at the bottom of the injection slot 3 for placing the insert 12. The inlay needle 6 of the fixed mechanism 5 can be used for placing the insert 12, and the spring sheet 7 of the fixed mechanism can fix the insert 12 on the inlay needle 6, so that the insert 12 is prevented from being displaced in the die when the upper die 1 and the lower die 2 are clamped, and the injection product is prevented from being unqualified.

[0031] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model, and the illustrative description of the above terms in the specification does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. The connection mode described in the description has obvious effects and practical effects.

[0032] Through the above structure and principle description, those skilled in the art should understand that the utility model is not limited to the above specific embodiments, and improvements and replacements of the known technology in the art based on the utility model all fall within the protection scope of the utility model, which should be limited by the claims 。

Claims

1. A production mold for insert injection molding, comprising: An upper mold and a lower mold are provided, and an injection groove is provided between the upper mold and the lower mold. The injection groove is characterized in that an installation hole is provided at the bottom, and a fixing mechanism for fixing an insert is provided in the installation hole. A support column is also provided at the bottom of the injection groove. The fixing mechanism includes a pin and a spring plate. The pin has a through hole, and the spring plate is disposed in the through hole. The upper half of the spring plate has a U-shaped structure, and protrusions are provided on both sides of the upper half of the U-shaped structure of the spring plate. The protrusions extend the pin from the through hole.

2. The production mold for insert injection molding according to claim 1, characterized in that, The injection molding groove is elongated, the mounting holes are respectively located at both ends of the injection molding groove, and the support column is located between the mounting holes.

3. The production mold for insert injection molding according to claim 2, characterized in that, An annular mounting base is provided at the outlet of the mounting hole, and the protrusion is located above the mounting base.

4. The production mold for insert injection molding according to claim 3, characterized in that, The upper end of the pin is a frustum-shaped guide portion, and the protrusion is located below the guide portion.

5. The production mold for insert injection molding according to claim 2, characterized in that, The upper and lower molds are provided with two injection grooves, which are connected to each other.

6. The production mold for insert injection molding according to claim 5, characterized in that, A placement groove is also provided on one side of the bottom of the injection molding tank.

7. The production mold for insert injection molding according to claim 1, characterized in that, The lower mold has guide grooves on both sides for guiding the upper mold, and the upper mold has guide blocks that cooperate with the guide grooves.

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