Injection mold insert positioning structure

Abstract

The utility model discloses an injection mold insert positioning structure which comprises an upper mold and a lower mold, the upper mold comprises an upper mold plate, the lower mold comprises a lower mold plate, the upper mold plate and the lower mold plate are closed to form a cavity, the lower mold further comprises a positioning needle plate, a lifting plate and a driving mechanism, and the positioning needle plate is arranged below the lower mold plate. The top of the positioning needle plate is horizontally and slidably connected with two positioning needles, the two positioning needles are obliquely arranged in a splayed shape, the top ends of the two positioning needles penetrate through the lower die plate and extend into the cavity, the lower die plate is provided with inclined guide grooves allowing the positioning needles to penetrate through, and the lifting plate is arranged below the positioning needle plate and connected with the positioning needle plate through springs. The driving mechanism is arranged on the lower die plate, and the output end of the driving mechanism is connected with the lifting plate. The insert positioning structure of the injection mold is reasonable in structure, and can prevent the insert from shifting in the injection molding process of the mold, so that the product quality is favorably improved.

Description

Technical Field

[0001] The utility model relates to a positioning structure for inserts in an injection mold. Background Art

[0002] An injection mold is a process part for an injection molding method. The advantages of an injection mold are fast production speed, high efficiency, automated operation, a variety of colors and patterns, the shape can range from simple to complex, the size can range from large to small, and the product size is precise, the product is easy to update, it can form parts with complex shapes, and it is suitable for mass production and forming processing fields of products with complex shapes. During the use of an injection mold, problems may occur in the injection of inserts. Insert injection refers to a molding method in which pre-prepared inserts of different materials are loaded into the mold and then resin is injected, and the molten material is joined and cured with the inserts to form an integrated product. However, during the existing insert injection process, the positioning effect of the inserts in the injection mold is not good, and the inserts are prone to displacement during injection, resulting in affecting the flatness and yield rate of the product. Summary of the Invention

[0003] The purpose of the utility model is to provide a positioning structure for inserts in an injection mold, which has a reasonable structure and can prevent the inserts from shifting during the injection molding process of the mold, thereby being beneficial to improving the product quality.

[0004] To achieve the above purpose, the technical solution of the utility model is to design a positioning structure for inserts in an injection mold, including an upper mold and a lower mold. The upper mold includes an upper template, and the lower mold includes a lower template. The upper template and the lower template are closed to form a cavity. The lower mold also includes a positioning needle plate, a lifting plate, and a driving mechanism. The positioning needle plate is arranged below the lower template, and two positioning needles are horizontally slidably connected to the top of the positioning needle plate. The two positioning needles are arranged obliquely in a V-shape, and the tops of the two positioning needles respectively penetrate through the lower template and extend into the cavity. The lower template is provided with inclined guide grooves for the positioning needles to penetrate through. The lifting plate is arranged below the positioning needle plate, and the lifting plate is connected to the positioning needle plate through a spring. The driving mechanism is arranged on the lower template, and the output end of the driving mechanism is connected to the lifting plate.

[0005] Preferably, a slider is arranged at the bottom end of the positioning needle, and a horizontal chute slidably matched with the slider is arranged at the top of the positioning needle plate.

[0006] Preferably, a guiding vertical hole is arranged at the top of the lifting plate, and a guiding column is arranged at the bottom of the positioning needle plate. The bottom end of the guiding column extends into the guiding vertical hole.

[0007] Preferably, the driving device includes two driving cylinders, which are respectively and fixedly connected to both sides of the upper template through cylinder seats. The output shafts of the driving cylinders are arranged downward, and the output shafts of the driving cylinders are fixedly connected to the lifting plate through connecting blocks.

[0008] The advantages and beneficial effects of the present utility model are as follows: It provides an insert positioning structure for an injection mold, with a reasonable structure, which can prevent the insert from shifting during the injection molding process of the mold, thus being beneficial to improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of the present utility model.

[0010] Figure 2 is Figure 1 the enlarged view of part A in

[0011] Figure 3 is a schematic diagram of the insert in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] The following combines the drawings and embodiments to further describe the specific embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0013] The technical solution specifically implemented by the present utility model is as follows:

[0014] As Figure 1 , Figure 2 and Figure 3 shown, an insert positioning structure for an injection mold includes an upper mold and a lower mold. The upper mold includes an upper template 1, and the lower mold includes a lower template 2. The upper template 1 and the lower template 2 are closed to form a cavity 3. The lower mold further includes a positioning needle plate 4, a lifting plate 5 and a driving mechanism. The positioning needle plate 4 is arranged below the lower template 2, and two positioning needles 6 are horizontally slidably connected to the top of the positioning needle plate 4. The two positioning needles 6 are arranged obliquely in a V shape, and the top ends of the two positioning needles 6 respectively penetrate through the lower template 2 and extend into the cavity 3. The lower template 2 is provided with inclined guide grooves 7 for the positioning needles 6 to penetrate. The lifting plate 5 is arranged below the positioning needle plate 4, and the lifting plate 5 is connected to the positioning needle plate 4 through a spring 8. The driving mechanism is arranged on the lower template 2, and the output end of the driving mechanism is connected to the lifting plate 5.

[0015] By adopting the above solution, the working principle of the insert positioning structure for an injection mold of the present utility model is as follows:

[0016] Before injection molding, the insert 100 is pre-buried in the mold cavity of the lower template 2. The middle position at the bottom of the insert 100 has a convex column 101. After completion, the upper template 1 and the lower template 2 are closed. Then, the lifting plate 5 is driven by the driving mechanism to move upward by a set distance, so that the lifting plate 5 drives the positioning pin plate 4 to move upward. The positioning pin plate 4 drives two positioning pins 6 to move obliquely upward, so that the tops of the two positioning pins 6 extend into the cavity 3 to hold the bottom of the insert 100, and the convex column 101 of the insert 100 will be clamped and fixed by the side parts of the tops of the two positioning pins 6, so as to realize the positioning of the insert 100, thereby preventing the insert 100 from shifting during the injection molding process of the mold, which is beneficial to improving the product quality.

[0017] Further, a slider 9 is provided at the bottom end of the positioning pin 6, and a horizontal chute 10 that is slidably engaged with the slider 9 is provided at the top of the positioning pin plate 4. By adopting the above solution, the horizontal sliding connection between the positioning pin 6 and the positioning pin plate 4 can be realized.

[0018] Further, a guiding vertical hole 11 is provided at the top of the lifting plate 5, and a guiding column 12 is provided at the bottom of the positioning pin plate 4. The bottom end of the guiding column 12 extends into the guiding vertical hole 11. By adopting the above solution, the connection stability between the lifting plate 5 and the positioning pin plate 4 can be improved.

[0019] Further, the driving device includes two driving oil cylinders 13. The two driving oil cylinders 13 are respectively fixedly connected to both sides of the upper template 2 through oil cylinder seats 14. The output shafts of the driving oil cylinders 13 are arranged downward, and the output shafts of the driving oil cylinders 13 are fixedly connected to the lifting plate 5 through connection blocks 15. By adopting the above solution, the driving mechanism can drive the lifting plate 5 to perform lifting motion.

[0020] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An insert positioning structure for an injection mold, comprising an upper mold and a lower mold. The upper mold includes an upper template, and the lower mold includes a lower template. The upper template and the lower template are closed to form a cavity, characterized in that, The lower die further includes a positioning pin plate, a lifting plate and a driving mechanism. The positioning pin plate is arranged below the lower template, and two positioning pins are horizontally slidably connected to the top of the positioning pin plate. The two positioning pins are arranged obliquely in a V shape, and the top ends of the two positioning pins respectively penetrate through the lower template and extend into the cavity. The lower template is provided with inclined guide grooves for the positioning pins to penetrate through. The lifting plate is arranged below the positioning pin plate, and the lifting plate is connected to the positioning pin plate through a spring. The driving mechanism is arranged on the lower template, and the output end of the driving mechanism is connected to the lifting plate.

2. The positioning structure of the injection mold insert according to claim 1, characterized in that, A slider is provided at the bottom end of the positioning pin, and a horizontal chute that slidably cooperates with the slider is provided at the top of the positioning pin plate.

3. The positioning structure of the injection mold insert according to claim 1, characterized in that, A guide vertical hole is provided at the top of the lifting plate, and a guide post is provided at the bottom of the positioning pin plate. The bottom end of the guide post extends into the guide vertical hole.

4. The positioning structure of the injection mold insert according to claim 1, characterized in that, The driving mechanism includes two driving oil cylinders. The two driving oil cylinders are respectively fixedly connected to both sides of the upper template through oil cylinder seats. The output shaft of the driving oil cylinder is arranged downward, and the output shaft of the driving oil cylinder is fixedly connected to the lifting plate through a connecting block.

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