Product injection mold with ejection function

Abstract

The utility model relates to a product injection mold with an ejection function. The product injection mold comprises a fixed mold, a movable mold and an ejection mechanism, a groove is formed in the inner surface of the fixed mold, and a fixed mold core is detachably fixed in the groove; an injection molding opening is formed in the top of the fixed mold, a runner is formed in the fixed mold core, and the injection molding opening communicates with the runner; guide holes are formed in corners of the fixed mold; guide rods are arranged on the surface of the movable mold and are in one-to-one correspondence with the guide holes; a movable mold core is fixed on the inner surface of the movable mold; the ejection mechanism comprises a supporting plate and a plurality of ejector pins; the supporting plate is placed in the movable mold and located between the movable mold core and the bottom of the movable mold. The bottoms of the ejector pins are fixed to the supporting plate, and the ejector pins are perpendicularly and movably connected to the movable mold core in a sleeving mode. And the supporting plate is connected with an external hydraulic device. After an injection molding product is formed, the product is quickly ejected out of the mold and is separated from the mold.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding processing, in particular to a product injection molding mold with an ejection function. Background Art

[0002] The mold industry is in a stage of rapid development, among which injection molds are a processing tool used in mass production of certain parts with complex shapes.

[0003] At present, after the injection molded product is formed, the injection molded product is easily adhered to the movable mold, and it is difficult to remove the product. The above situation seriously affects the production efficiency of the injection molded parts. Utility Model Content

[0004] The utility model aims to provide a product injection mold with an ejection function, which can quickly eject the product from the mold and separate it from the mold after the injection molded product is formed.

[0005] In order to achieve the purpose of the above utility model, a product injection mold with an ejection function is provided, comprising a fixed mold, a movable mold and an ejection mechanism;

[0006] A groove is provided on the inner surface of the fixed mold, a fixed mold core is detachably fixed in the groove, and the shape of the working surface of the fixed mold core is adapted to the injection molded part to be injection molded;

[0007] The top of the fixed mold is provided with an injection port, the fixed mold core is provided with a flow channel, and the injection port is connected with the flow channel;

[0008] The corners of the fixed mold are all provided with guide holes;

[0009] The surface positions of the movable mold are all provided with guide rods, and the guide rods correspond to the guide holes one by one;

[0010] A movable mold core is fixed on the inner surface of the movable mold, and the shape of the working surface of the movable mold core is adapted to the injection molded part to be injection molded;

[0011] The ejection mechanism includes a support plate and a plurality of ejector pins;

[0012] The support plate is placed in the movable mold and is located between the movable mold core and the bottom of the movable mold;

[0013] The bottoms of the plurality of ejectors are fixed on the support plate, and the ejectors are vertically and movably sleeved on the movable mold core;

[0014] The support plate is connected to an external hydraulic device.

[0015] Preferably, the side surfaces of the fixed mold and the movable mold that are in contact with each other are provided with positioning blocks, and the movable mold is provided with positioning grooves at positions corresponding to the positioning blocks.

[0016] Preferably, the movable mold core and the fixed mold core are both provided with cooling water pipelines.

[0017] Preferably, a plurality of the inclined ejector rods are provided on the support plate, and the number of the plurality of the inclined ejector rods is equal to the number of the back hooks after injection molding, and they correspond one to one;

[0018] The top of the inclined ejector rod is provided with a profiling groove, and the profiling groove is adapted to the corresponding hook;

[0019] The movable mold core is provided with a guide inclined groove, and the guide inclined groove runs through the upper and lower surfaces of the movable mold core.

[0020] Furthermore, a plurality of mosaic blocks are fixed on the support plate, the top of each mosaic block has an inclined slot, the inclined slot is matched with the guide inclined slot, a slider is slidably provided on the inclined slot, and the bottom of the inclined ejector rod is hinged on the slider.

[0021] Preferably, a plurality of return springs are provided between the movable mold core and the support plate, one end of the return spring is connected to the movable mold core, and the other end of the return spring is connected to the support plate.

[0022] Furthermore, the return spring is a pagoda-shaped spring.

[0023] Compared with the prior art, the product injection mold with ejection function of the utility model has the following advantages:

[0024] (1) By providing an ejection mechanism on the movable mold, the movable mold and the fixed mold can be quickly separated after they are separated, thereby improving the production efficiency of the product;

[0025] (2) Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a product injection mold with an ejection function according to this embodiment;

[0027] Figure 2 Schematic diagram of the structure of the fixed mold in this embodiment;

[0028] Figure 3 The structure of the movable mold in this embodiment is schematically shown in FIG. Figure 1 ;

[0029] Figure 4 The structure of the movable mold in this embodiment is shown in FIG. Figure 2 ;

[0030] Figure 5 Schematic diagram of the structure of the inclined ejector in this embodiment;

[0031] Figure 6 It is a schematic diagram of the structure of the connection between the inclined ejector rod and the movable mold core in this embodiment;

[0032] Figure 7 This is a schematic diagram of the structure of the connection between the inclined ejector rod in this embodiment and the hook in the product;

[0033] Figure 8 for Figure 7 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] like Figure 1 As shown, a product injection mold with an ejection function in this embodiment includes a fixed mold 1, a movable mold 2 and an ejection mechanism.

[0036] like Figure 2 As shown, a groove 5 is provided on the inner surface of the fixed mold 1, and a fixed mold core 6 is detachably fixed in the groove 5, and the shape of the working surface of the fixed mold core 6 is adapted to the injection molded part to be injection molded; an injection port 3 is provided on the top of the fixed mold 1, and a flow channel 7 is provided in the fixed mold core 6, and the injection port 3 is connected to the flow channel 7; the corners of the fixed mold 1 are all provided with guide holes 8.

[0037] like Figure 3 As shown, the surface of the movable mold 2 is provided with guide rods 9, and the guide rods 9 correspond to the guide holes 8 one by one; a movable mold core 11 is fixed on the inner surface of the movable mold 2, and the shape of the working surface of the movable mold core 11 is adapted to the injection molded part to be injection molded.

[0038] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the sides where the fixed mold 1 and the movable mold 2 are in contact are provided with positioning blocks 4, and the movable mold 2 is provided with positioning grooves 10 at positions corresponding to the positioning blocks 4; such a configuration facilitates the movable mold 2 to accurately achieve mold closing with the fixed mold 1 under the movement of an external driving device.

[0039] In this embodiment, the movable mold core 11 and the fixed mold core 6 are provided with cooling water pipes (not shown in the figure) inside, which have a cooling effect on the movable mold core 11 and the fixed mold core 6 and accelerate the molding efficiency of the injection molded parts.

[0040] like Figure 3 and Figure 4As shown, the ejection mechanism includes a support plate 14 and a plurality of ejector pins 13; the support plate 14 is placed in the movable mold 2 and is located between the movable mold core 11 and the bottom of the movable mold 2; the bottoms of the plurality of ejector pins 13 are fixed on the support plate 14, and the ejector pins 13 are vertically and movably sleeved on the movable mold core 11; the support plate 14 is connected to an external hydraulic device.

[0041] In this embodiment, if Figure 4 As shown, a plurality of return springs 15 are provided between the movable mold core 11 and the support plate 14, one end of the return spring 15 is connected to the movable mold core 11, and the other end of the return spring 15 is connected to the support plate 14. Further, the return spring 15 is a pagoda-shaped spring with a small volume, a large load, and a variable stiffness, and is widely used in occasions with small space and large load and shock absorbing devices.

[0042] When performing injection molding, the fixed mold 1 and the movable mold 2 are first installed on the injection molding equipment. The movable mold 2 is driven by an external driving device to close the mold with the fixed mold 1. Cooling water is injected into the cooling water pipes in the movable mold core 11 and the fixed mold core 6 to cool the molded products at the same time. After injection molding, the movable mold 2 is driven by an external driving device to separate from the fixed mold 1. Since the front of the product is relatively flat and the back of the injection molded product is relatively uneven, the injection molded product is bonded to the movable mold core 11 and moves backward with the movable mold core. At this time, the external hydraulic device drives the support plate 14 to move toward the movable mold core 11, and the ejector pin 13 can eject the molded product.

[0043] In this embodiment, if Figure 5 As shown, the support plate 14 is provided with a plurality of inclined ejector rods 16, the number of the plurality of inclined ejector rods 16 is equal to the number of the back hooks 23 after injection molding, and they correspond one to one, and the top of the inclined ejector rod 16 has a profiling groove 17, and the profiling groove 17 is adapted to the corresponding hook 23; Figure 6 As shown, the movable mold core 11 has a guide groove 21, and the guide groove 21 runs through the upper and lower surfaces of the movable mold core 15; in this way, some injection molded parts 22 have hooks 23 on the back after injection molding, and the hooks 23 are easily damaged when the ejector pin 13 vertically ejects the molded injection molded part 22. Figure 7 and Figure 8 As shown, after the injection molded part 22 with the hook 23 is formed, the external hydraulic device drives the support plate 14 to move toward the movable mold core 11, the ejector pin 13 vertically ejects the injection molded part 22, and the inclined ejector rod 16 moves forward along the direction of the guide inclined groove 21, and finally separates from the molded hook 23 of the injection molded part 22, and the injection molded part 22 is separated from the movable mold core 11.

[0044] In this embodiment, if Figure 5 and Figure 6 As shown, a plurality of inlay blocks 19 are fixed on the support plate 14, and the top of the inlay block 19 has an inclined groove 20, and the inclined groove 20 is adapted to the guide inclined groove 21. A slider 18 is slidably provided on the inclined groove 20, and the bottom of the inclined ejector rod 16 is hinged on the slider 18. Such arrangement, on the one hand, increases the degree of freedom of the parts and effectively prevents the inclined ejector rod 16 from getting stuck in the guide groove, and on the other hand, realizes a detachable connection, which is convenient for subsequent disassembly and maintenance.

[0045] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A product injection mold with ejection function, characterized in that: It includes a fixed mold, a movable mold and an ejection mechanism; A groove is provided on the inner surface of the fixed mold, a fixed mold core is detachably fixed in the groove, and the shape of the working surface of the fixed mold core is adapted to the injection molded part to be injection molded; The top of the fixed mold is provided with an injection port, the fixed mold core is provided with a flow channel, and the injection port is connected with the flow channel; The corners of the fixed mold are all provided with guide holes; The surface positions of the movable mold are all provided with guide rods, and the guide rods correspond to the guide holes one by one; A movable mold core is fixed on the inner surface of the movable mold, and the shape of the working surface of the movable mold core is adapted to the injection molded part to be injection molded; The ejection mechanism includes a support plate and a plurality of ejector pins; The support plate is placed in the movable mold and is located between the movable mold core and the bottom of the movable mold; The bottoms of the plurality of ejectors are fixed on the support plate, and the ejectors are vertically and movably sleeved on the movable mold core; The support plate is connected to an external hydraulic device.

2. A product injection mold with ejection function as claimed in claim 1, characterized in that: The sides of the fixed mold and the movable mold that are in contact with each other are provided with positioning blocks, and the movable mold is provided with positioning grooves at positions corresponding to the positioning blocks.

3. A product injection mold with ejection function as claimed in claim 1, characterized in that: The movable mold core and the fixed mold core are both provided with cooling water pipelines inside.

4. A product injection mold with ejection function as claimed in claim 1, characterized in that: The support plate is provided with a plurality of inclined ejector rods, the number of the plurality of inclined ejector rods is equal to the number of the back hooks after injection molding, and they correspond one to one; The top of the inclined ejector rod is provided with a profiling groove, and the profiling groove is adapted to the corresponding hook; The movable mold core is provided with a guide inclined groove, and the guide inclined groove runs through the upper and lower surfaces of the movable mold core.

5. A product injection mold with ejection function as claimed in claim 4, characterized in that: A plurality of inlay blocks are fixed on the support plate, the top of each inlay block is provided with an inclined slide groove, the inclined slide groove is matched with the guide inclined slide groove, a slider is slidably arranged on the inclined slide groove, and the bottom of the inclined ejector rod is hinged on the slider.

6. A product injection mold with ejection function as claimed in any one of claims 1 to 5, characterized in that: A plurality of return springs are arranged between the movable mold core and the support plate, one end of the return spring is connected to the movable mold core, and the other end of the return spring is connected to the support plate.

7. A product injection mold with ejection function as claimed in claim 6, characterized in that: The return spring is a pagoda-shaped spring.

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