Metal insert injection molding equipment

Abstract

The utility model discloses metal insert injection molding equipment which comprises a mold carrying frame, a first mold, a second mold, a mold opening and closing assembly, an injection molding cavity and a mold ejecting assembly. The mold carrying frame adjusts the distance between the first mold and the second mold through the mold opening and closing assembly, collapse areas are arranged on the adjacent sides of the first mold and the second mold correspondingly, synchronous demolding of the first mold and the second mold can be achieved by rotating the rocking handle through the two-way external threads of the rotating shaft, and in the demolding process, the mold opening and closing assembly is matched with the collapse areas. The position of the demolding plate is kept unchanged under the supporting action of the ejector rod and the supporting plate, the metal insert can be prevented from moving along with the first mold or the second mold, one-step demolding can be achieved, the demolding process is simple, the production stagnation time caused by demolding difficulty is shortened, the time for opening and closing the mold each time is shortened from several minutes to dozens of seconds, and the production efficiency is improved. And therefore, the production frequency in unit time is increased.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a metal insert injection molding equipment. Background Technology

[0002] Metal injection molding typically refers to the process of directly injecting molten metal material into a mold for molding. Metal injection molding uses high-temperature molten metal material to achieve the fluidity suitable for injection molding. The molten metal is injected into the mold, quickly cooled and solidified, and the molded parts have high precision and good mechanical properties, making them suitable for applications with high strength and precision requirements.

[0003] Chinese Patent Publication No. CN221620751U discloses a mold for manufacturing and processing metal parts, including a first mold and a second mold. The first mold and the second mold are mirror images of each other. A molding hole is provided through the top of both the first mold and the second mold. Injection molding cavities are formed inside the first mold and the second mold between their adjacent ends, with the adjacent ends of the two injection molding cavities being through-holes. A molding block is provided inside the two injection molding cavities. Demolding templates are provided on the inner walls of the two injection molding cavities away from each other. The first mold and the second mold, in conjunction with the internal injection molding cavities and molding blocks, perform injection molding operations on metal hardware parts. After injection molding, a rotating turntable rotates a threaded column, driving the demolding template to extrude the metal injection molded parts from the injection molding cavities, thereby completing the demolding operation of the metal injection molded parts.

[0004] The above-mentioned technology demolds the injection molded parts by extruding them from the first mold and the second mold. The injection molded parts need to be demolded from one mold first and then from the other mold. The demolding process is cumbersome, and each mold opening and closing time often takes several minutes, resulting in low production efficiency. Therefore, this utility model discloses a metal insert injection molding equipment to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a metal insert injection molding equipment to solve the problems mentioned in the background art. Traditional metal insert injection molding equipment demolds by extruding the metal insert in the mold. The metal insert needs to be demolded from one mold first and then from the other mold. The demolding process is cumbersome, and the time for each mold opening and closing often takes several minutes, resulting in low production efficiency.

[0006] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0007] A metal insert injection molding equipment includes a mold frame, a first mold, a second mold, an opening and closing mold assembly, an injection molding cavity, and a top mold assembly. The first mold and the second mold are arranged side by side on the upper side of the mold frame. The distance between the first mold and the second mold is adjusted by the opening and closing mold assembly. The adjacent sides of the first mold and the second mold are provided with collapsed areas, and the two collapsed areas are merged to form the injection molding cavity. The top mold assembly is installed at both ends of the mold frame.

[0008] The top mold assembly includes a support plate fixed to the upper side of the mold frame edge. At least one ejector rod is fixedly connected to one side of the support plate. The end of the ejector rod away from the support plate extends into the injection molding cavity, and the end of the ejector rod located in the injection molding cavity is fixed with a release plate.

[0009] As a further embodiment of this utility model, the mold opening and closing assembly includes a rotating shaft rotatably connected between the inner walls of both sides of the mold frame. Both ends of the rotating shaft are fixedly connected to a rocker handle through the mold frame. External threads are provided on the outer sides of both ends of the rotating shaft. The helical directions of the two external threads are opposite, and a slider is threadedly connected to the outer side of each external thread. The two sliders are respectively fixed to the first mold and the second mold.

[0010] As a further embodiment of this utility model, the lower sides of both the first mold and the second mold are in contact with the mold frame, and the first mold and the second mold are symmetrically distributed about the central axis of the mold frame.

[0011] As a further embodiment of this utility model, the top of the first mold is provided with a first slot, the top of the second mold is provided with a second slot, and the first slot and the second slot are combined to form a pouring gate structure.

[0012] As a further embodiment of this utility model, a first positioning plate is fixedly connected to both sides of the first mold, and a plurality of positioning holes are equally spaced on the first positioning plate. A second positioning plate is fixedly connected to both sides of the second mold, and a plurality of screws are equally spaced on one side of the second positioning plate. Each screw passes through the corresponding positioning hole and is threaded with a nut.

[0013] As a further embodiment of this utility model, a sinkhole adapted to the side of the demolding template away from the injection molding cavity is provided in the collapsed area of ​​the first mold and the second mold.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model discloses a metal insert injection molding equipment. By rotating the crank, the first mold and the second mold can be demolded synchronously by relying on the bidirectional external thread of the rotating shaft. During the demolding process, the demolding plate is kept in a fixed position by the support of the ejector rod and the support plate, which can prevent the metal insert from moving with the first mold or the second mold. Demolding can be done in one step. Because the demolding process is simple, the production downtime caused by demolding difficulties is reduced. The time for each mold opening and closing is shortened from several minutes to tens of seconds, thereby increasing the number of production times per unit time and improving production efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a perspective view of a metal insert injection molding equipment of the present invention in the injection molding state;

[0018] Figure 2 This is a perspective view of a metal insert injection molding equipment in the demolding state according to the present invention;

[0019] Figure 3 This utility model relates to a metal insert injection molding equipment. Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 This utility model relates to a metal insert injection molding equipment. Figure 2 Enlarged view of the structure at point B.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Mold frame; 2. First mold; 21. First slot; 22. First positioning plate; 23. Positioning hole; 3. Second mold; 31. Second slot; 32. Second positioning plate; 33. Screw; 4. Mold opening and closing assembly; 41. Rotating shaft; 42. Handle; 43. External thread; 44. Slider; 5. Injection molding cavity; 6. Ejector mold assembly; 61. Support plate; 62. Ejector rod; 63. Demolding plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments.

[0024] Please see Figure 1-4 This utility model provides a metal insert injection molding equipment, including a mold frame 1, a first mold 2, a second mold 3, an opening and closing mold assembly 4, an injection molding cavity 5, and a top mold assembly 6. The first mold 2 and the second mold 3 are arranged side by side on the upper side of the mold frame 1. The lower sides of the first mold 2 and the second mold 3 are in contact with the mold frame 1, and the first mold 2 and the second mold 3 are symmetrically distributed about the central axis of the mold frame 1.

[0025] Specifically, the mold frame 1 provides a support platform for the first mold 2 and the second mold 3, allowing the first mold 2 and the second mold 3 to slide along the mold frame 1. This not only provides guidance for the closing and demolding of the first mold 2 and the second mold 3, but also improves the structural stability of the mold.

[0026] Furthermore, the mold frame 1 adjusts the distance between the first mold 2 and the second mold 3 through the mold opening and closing assembly 4. The mold opening and closing assembly 4 includes a rotating shaft 41 rotatably connected between the inner walls of both sides of the mold frame 1. Both ends of the rotating shaft 41 are fixedly connected to a rocker handle 42 through the mold frame 1. Both ends of the rotating shaft 41 are provided with external threads 43 on their outer sides. The two external threads 43 are arranged in opposite directions, and both external threads 43 are threadedly connected to a slider 44 on their outer sides. The two sliders 44 are fixed to the first mold 2 and the second mold 3 respectively.

[0027] Specifically, the operator turns the crank handle 42, causing the rotating shaft 41 to rotate. The external threads 43 at both ends of the rotating shaft 41 interact with the internal threads on the sliders 44. Since the spiral directions of the external threads 43 are opposite, the two sliders 44 will move towards the middle. The sliders 44 drive the first mold 2 and the second mold 3 to move closer together, ultimately achieving mold closing. Conversely, the operator turns the crank handle 42 in the opposite direction, causing the rotating shaft 41 to rotate in the opposite direction. The external threads 43 at both ends of the rotating shaft 41 interact with the internal threads on the sliders 44, causing the two sliders 44 to move to both sides. The sliders 44 drive the first mold 2 and the second mold 3 to separate to both sides, ultimately achieving mold opening.

[0028] Furthermore, the adjacent sides of the first mold 2 and the second mold 3 are provided with collapsed areas, and the two collapsed areas are combined to form the injection molding cavity 5. The top of the first mold 2 is provided with a first slot 21, and the top of the second mold 3 is provided with a second slot 31. The first slot 21 and the second slot 31 are combined to form the pouring gate structure.

[0029] Specifically, during the injection molding process, molten metal can be injected into the injection molding cavity 5 through the gating structure. The gating structure also plays a certain role in venting, allowing air to be smoothly discharged from the injection molding cavity 5. It is worth noting that the gating structure is centered relative to the mold, which is beneficial for the molten metal to be dispersed to all parts of the injection molding cavity 5 and can also reduce the generation of casting cavities. On the other hand, during the demolding process, the excess part of the metal insert in the gating structure will not affect the separation process of the first mold 2 and the second slot 31, making the demolding process smoother.

[0030] Furthermore, a first positioning plate 22 is fixedly connected to both sides of the first mold 2, and a plurality of positioning holes 23 are equally spaced on the first positioning plate 22. A second positioning plate 32 is fixedly connected to both sides of the second mold 3, and a plurality of screws 33 are equally spaced on one side of the second positioning plate 32. Each screw 33 passes through the corresponding positioning hole 23 and is threaded with a nut.

[0031] Specifically, before injection molding, the positioning hole 23 and the screw 33 cooperate to achieve precise positioning of the first mold 2 and the second mold 3. During the injection molding process, the molten metal is injected into the injection molding cavity 5, which will generate a large pressure. By passing the screw 33 through the positioning hole 23 and tightening it with a nut, the first mold 2 and the second mold 3 can be firmly fixed together to prevent the mold from shifting or deforming under the injection pressure, thereby ensuring the quality of the metal insert.

[0032] Furthermore, both ends of the mold frame 1 are equipped with a top mold assembly 6. The top mold assembly 6 includes a support plate 61 fixed to the upper side of the edge of the mold frame 1. At least one push rod 62 is fixedly connected to one side of the support plate 61. The end of the push rod 62 away from the support plate 61 extends into the injection molding cavity 5, and the end of the push rod 62 located in the injection molding cavity 5 is fixed with a release template 63.

[0033] Specifically, after the metal insert cools and solidifies, the operator separates the first mold 2 and the second mold 3 through the mold opening and closing assembly 4. During the mold separation process, the demolding plate 63 remains in a fixed position under the support of the ejector rod 62 and the support plate 61, thereby preventing the metal insert from moving with the mold. The metal insert does not require complicated extrusion or step-by-step demolding operations when demolding. The metal insert can be easily removed by simply separating the mold, which greatly reduces the demolding time.

[0034] Furthermore, the collapsed areas of the first mold 2 and the second mold 3 are provided with recesses that are adapted to the side of the ejector plate 63 away from the injection molding cavity 5.

[0035] Specifically, the ejector plate 63 fits tightly with the collapsed area of ​​the mold, thereby forming a complete injection molding cavity 5 during the injection molding process, reducing the risk of molten metal leakage during the injection molding process. When demolding, the ejector plate 63 can be smoothly separated from the collapsed area of ​​the mold without affecting the structural integrity of the metal insert.

[0036] Working principle:

[0037] In use, molten metal is first injected into the injection molding cavity 5 through the sprue. After the molten metal cools and solidifies, a metal insert is formed. Then, each nut is unscrewed and the crank handle 42 is turned. The crank handle 42 drives the rotating shaft 41 to rotate. The external threads 43 at both ends of the rotating shaft 41 drive the two sliders 44 to move away from each other, so that the first mold 2 and the second mold 3 move away synchronously. At the same time, the ejector plate 63 remains in a fixed position under the support of the ejector rod 62 and the support plate 61, which can prevent the metal insert from moving with the first mold 2 or the second mold 3 until the two are completely separated, and then the metal insert can be easily removed.

Claims

1. A metal insert injection molding apparatus characterized by, The mold includes a mold frame (1), a first mold (2), a second mold (3), a mold opening and closing assembly (4), an injection molding cavity (5), and a top mold assembly (6). The first mold (2) and the second mold (3) are arranged side by side on the upper side of the mold frame (1). The mold frame (1) adjusts the distance between the first mold (2) and the second mold (3) through the mold opening and closing assembly (4). The adjacent sides of the first mold (2) and the second mold (3) are provided with collapsed areas, and the two collapsed areas are merged to form the injection molding cavity (5). The top mold assembly (6) is installed at both ends of the mold frame (1). The top mold assembly (6) includes a support plate (61) fixed on the upper side of the edge of the mold frame (1). At least one push rod (62) is fixedly connected to one side of the support plate (61). The end of the push rod (62) away from the support plate (61) extends into the injection molding cavity (5), and the end of the push rod (62) located in the injection molding cavity (5) is fixed with a release plate (63).

2. A metal insert injection molding apparatus according to claim 1, characterized by: The mold opening and closing assembly (4) includes a rotating shaft (41) rotatably connected between the inner walls of the two sides of the mold frame (1). Both ends of the rotating shaft (41) are fixedly connected to a rocker handle (42) through the mold frame (1). Both ends of the rotating shaft (41) are provided with external threads (43). The two external threads (43) are arranged in opposite directions. The outer side of each external thread (43) is threaded with a slider (44). The two sliders (44) are fixed to the first mold (2) and the second mold (3) respectively.

3. The insert injection molding apparatus of claim 1, wherein: The lower sides of the first mold (2) and the second mold (3) are in contact with the mold frame (1), and the first mold (2) and the second mold (3) are symmetrically distributed about the central axis of the mold frame (1).

4. The insert injection molding apparatus of claim 1, wherein: The first mold (2) has a first slot (21) on its top, and the second mold (3) has a second slot (31) on its top. The first slot (21) and the second slot (31) are combined to form a pouring gate structure.

5. The insert injection molding apparatus of claim 1, wherein: The first mold (2) is fixedly connected to both sides of a first positioning plate (22), and a plurality of positioning holes (23) are equally spaced on the first positioning plate (22). The second mold (3) is fixedly connected to both sides of a second positioning plate (32), and a plurality of screws (33) are equally spaced on one side of the second positioning plate (32). Each screw (33) is threaded with a nut after passing through the corresponding positioning hole (23).

6. The insert injection molding apparatus of claim 1, wherein: The first mold (2) and the second mold (3) have a sink groove in the collapsed area that matches the side of the demolding template (63) away from the injection molding cavity (5).

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