Two-time core-pulling in-mold injection molding copper nut mold structure

Abstract

The utility model belongs to the technical field of molds, and discloses a twice core-pulling mold structure for injection molding of a copper nut in a mold, which comprises an outer core mold and an inner core mold, the inner core mold is located in the outer core mold and has the freedom degree of moving relative to the outer core mold. The outer core mold is connected with a mold rod used for placing a nut in an inserted mode, the inner core mold is provided with a first working position and a second working position, when the inner core mold is located at the first working position, the end face of the inner core mold is flush with the end face of the mold rod, and when the inner core mold is located at the second working position, the end face of the inner core mold exceeds the end face of the mold rod. According to the utility model, the nut is mounted through the mold rod, and the mold rod extends into an injection molding cavity; when installation is needed, the inner core mold is located at the first working position, the end face of the inner core mold is flush with the end face of the mold rod, the inner core mold cannot exceed the mold rod, and therefore space limitation on installation of the nut is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a copper nut mold structure for secondary core-pulling mold injection molding. Background Art

[0002] In injection molding Figure 1 When the workpiece GJ is shown, the nut 5 needs to be placed on the hole L in advance so that the nut 5 and the workpiece GJ are integrated. Since the workpiece GJ also has a cavity inside, a core mold must be set during injection molding in order to form the cavity. The holes L are distributed on both sides of the cavity, and the corresponding core mold will cause interference when placing the nut 5. The space limitation makes it difficult to conveniently place the nut 5 either manually or with tools.

[0003] Therefore, a two-time core-pulling in-mold injection mold copper nut mold structure is provided to solve the above problems. Utility Model Content

[0004] In view of the problems raised by the above background technology, the purpose of the utility model is to provide a copper nut mold structure for double core-pulling in-mold injection molding.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] The mold structure of copper nut injection molding in the secondary core-pulling mold includes an outer core mold and an inner core mold;

[0007] The inner core mold is located inside the outer core mold, and the inner core mold has the freedom to move relative to the outer core mold;

[0008] The outer core mold is inserted into a mold rod for placing nuts, and the inner core mold has a first working position and a second working position. When the inner core mold is in the first working position, the end face of the inner core mold is flush with the end face of the mold rod. When the inner core mold is in the second working position, the end face of the inner core mold exceeds the end face of the mold rod.

[0009] It is further defined that it also includes a power source for driving the outer core mold and the inner core mold to move. With such a structural design, the power source is used to drive the outer core mold and the inner core mold to move in a predetermined manner.

[0010] It is further specified that the power source adopts a cylinder. With this structural design, the cylinder power output is stable, the action is stable during demoulding, and the product quality is better. In addition, the cylinder is stable and reliable, with a low failure rate, which avoids the maintenance from squeezing out production time.

[0011] It is further defined that the output end of the power source is connected to a slider, and the inner core mold and the outer core mold are installed through the slider. With such a structural design, the slider is used to install the inner core mold and the outer core mold.

[0012] It is further defined that it also includes guide bars that regulate the movement posture of the slider, and the guide bars are distributed on both sides of the slider. With such a structural design, the guide bars are on both sides of the slider to regulate the movement direction of the slider.

[0013] The beneficial effects of the utility model are as follows: in order to avoid interference of the inner core mold with the installation of the nut, the inner core mold is provided with the freedom to move relative to the outer core mold; the nut is installed through the mold rod, and the mold rod extends into the interior of the injection molding cavity; when installation is required, the inner core mold is in the first working position, the end face of the inner core mold is flush with the end face of the mold rod, and the inner core mold will not exceed the mold rod, thereby avoiding space restrictions on the installation of the nut; when injection molding is required, the inner core mold moves relative to the outer core mold, and the inner core mold is in the second working position to complete the formation of the internal cavity of the workpiece GJ. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0015] Figure 1 This is a schematic structural diagram of an injection molded product of a copper nut mold structure embodiment of a two-time core-pulling mold;

[0016] Figure 2 It is a structural schematic diagram of the copper nut mold structure embodiment of the double core-pulling mold injection molding of the utility model, in which the inner core mold is in the second working position;

[0017] Figure 3 It is a structural schematic diagram of the copper nut mold structure embodiment of the double core-pulling mold injection molding of the utility model, in which the inner core mold is in the first working position;

[0018] Figure 4 This is a schematic diagram of the main structure of the embodiment of the copper nut mold structure for double core-pulling in-mold injection molding of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the mold rod in the embodiment of the mold structure for double core-pulling in-mold injection molding of copper nuts of the utility model;

[0020] The main component symbols are described as follows:

[0021] GJ, workpiece;

[0022] L, hole position;

[0023] 1. Power source;

[0024] 2. External core mold;

[0025] 3. Inner core mold;

[0026] 4. Mold rod;

[0027] 5. Nut;

[0028] 6. Guide bar;

[0029] 7. Slider. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1-5 As shown, the copper nut mold structure for double core-pulling mold injection molding of the utility model comprises an outer core mold 2 and an inner core mold 3;

[0032] The inner core mold 3 is located inside the outer core mold 2, and the inner core mold 3 has the freedom to move relative to the outer core mold 2;

[0033] The outer core mold 2 is inserted into the mold rod 4 for placing the nut 5, and the inner core mold 3 has a first working position and a second working position. When the inner core mold 3 is in the first working position, the end face of the inner core mold 3 is flush with the end face of the mold rod 4. When the inner core mold 3 is in the second working position, the end face of the inner core mold 3 exceeds the end face of the mold rod 4.

[0034] In this embodiment:

[0035] In order to prevent the inner core mold 3 from interfering with the installation of the nut 5, the inner core mold 3 is provided with the freedom to move relative to the outer core mold 2;

[0036] The nut 5 is installed through the mold rod 4, and the mold rod 4 is inserted into the cavity of the injection molding;

[0037] When installation is required, the inner core mold 3 is in the first working position, and the end surface of the inner core mold 3 is flush with the end surface of the mold rod 4. Figure 3 As shown, the inner core mold 3 will not exceed the mold rod 4, thus avoiding space limitation on the installation of the nut 5;

[0038] When injection molding is required, the inner core mold 3 moves relative to the outer core mold 2, such as Figure 2 As shown, the inner core mold 3 is in the second working position to complete the formation of the internal cavity of the workpiece GJ.

[0039] Preferably, it also includes a power source 1 for driving the outer core mold 2 and the inner core mold 3 to move. In this structural design, the power source 1 is used to drive the outer core mold 2 and the inner core mold 3 to move in a predetermined manner. In fact, other driving structures can also be considered according to specific circumstances.

[0040] Preferably, the power source 1 is a cylinder. With this structural design, the cylinder power output is stable, the action is stable during demoulding, and the product quality is better. In addition, the cylinder is stable and reliable, with a low failure rate, which avoids the maintenance from squeezing out the production time. In fact, other structural shapes of the power source 1 can also be considered according to specific circumstances.

[0041] Preferably, the output end of the power source 1 is connected to the slider 7, and the inner core mold 3 and the outer core mold 2 are installed through the slider 7. In this structural design, the slider 7 is used to install the inner core mold 3 and the outer core mold 2. In fact, other installation structures can also be considered according to specific circumstances.

[0042] Preferably, it also includes guide bars 6 for regulating the movement posture of the slider 7, and the guide bars 6 are distributed on both sides of the slider 7. In this structural design, the guide bars 6 are on both sides of the slider 7 to regulate the movement direction of the slider 7. In fact, other guide structures can also be considered according to specific circumstances.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. 2 times core-pulling mold injection copper nut mold structure, characterized by: It comprises an outer core mold (2) and an inner core mold (3); The inner core mold (3) is located inside the outer core mold (2), and the inner core mold (3) has the freedom to move relative to the outer core mold (2); The outer core mold (2) is plugged into a mold rod (4) for placing a nut (5); the inner core mold (3) has a first working position and a second working position; when the inner core mold (3) is in the first working position, the end face of the inner core mold (3) is flush with the end face of the mold rod (4); when the inner core mold (3) is in the second working position, the end face of the inner core mold (3) exceeds the end face of the mold rod (4).

2. The copper nut mold structure for double core-pulling in-mold injection molding according to claim 1 is characterized in that: It also includes a power source (1) for driving the outer core mold (2) and the inner core mold (3) to move.

3. The copper nut mold structure for double core-pulling in-mold injection molding according to claim 2 is characterized in that: The power source (1) is a cylinder.

4. The copper nut mold structure for double core-pulling in-mold injection molding according to claim 3 is characterized in that: The output end of the power source (1) is connected to a slider (7), and the inner core mold (3) and the outer core mold (2) are installed via the slider (7).

5. The copper nut mold structure for double core-pulling in-mold injection molding according to claim 4 is characterized in that: It also includes a guide bar (6) for regulating the movement posture of the slider (7), and the guide bar (6) is distributed on both sides of the slider (7).

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