Injection mold slider ejector rod structure and injection mold

Abstract

This utility model relates to the field of injection molds, and discloses an injection mold slider ejector structure and an injection mold. The injection mold slider ejector structure includes a moving and fixed mold, a side-parting mold mechanism, a side-pushing mechanism, a slider, a slider ejector rod, an ejector connecting block, a mold core ejector rod, a mold core ejector rod locking mechanism, a delay groove, an ejector plate, a material handle ejector pin, and a material handle delay sleeve. When the mold is closed, the slider ejector rod abuts against the slider, the mold core ejector rod locking mechanism is closed and located below the delay groove, and the material handle ejector pin mounting platform is located above the delay sleeve. When the moving and fixed molds separate, the ejector plate pushes the slider ejector rod forward and the slider backward to complete the mold opening action. The ejector plate continues to push to completely eject the product. This ejector rod structure and injection mold, through an improved slider ejector rod structure, allow the slider to remain in the closed state to fix the product during mold opening, improving the problem of product jamming and deformation caused by unreasonable injection mold structure, thus making it applicable to multi-cavity molds and molds with high requirements for external dimensions.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, specifically to an injection mold slider ejector structure and an injection mold. Background Technology

[0002] The plastics industry is booming with the continued prosperity of intelligent manufacturing, and injection-molded products are permeating all aspects of life. As product upgrades accelerate, demand is also increasing. Mold design must continuously innovate and optimize, requiring solutions to be found in slider and mold structures.

[0003] Some product structures require the mold slider to be completely detached from the fixed mold side before it can retract; otherwise, the product may stick to the fixed mold or some product features may be deformed (e.g., Figure 1 (As shown). Traditional hydraulic cylinder technology uses a hydraulic cylinder for core pulling, followed by a slide cylinder for core pulling after the moving and fixed molds open. After the product is ejected, the hydraulic cylinder pushes the slide back to its original position. However, this technology increases the external structure of the mold and requires related supporting equipment, making it unsuitable for multi-cavity molds or quick mold change modules. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of product sticking to the mold or deformation of some product features caused by unreasonable injection mold design during the injection molding process in the existing technology. It provides an injection mold slider ejector structure and an injection mold, which can improve the efficiency of product demolding.

[0005] To achieve the above objectives, this utility model provides a slider ejector structure for an injection mold, comprising:

[0006] A fixed mold, wherein a first cavity with an opening is provided inside the fixed mold;

[0007] The moving mold has a second cavity with an opening, and the first cavity and the second cavity are used to cooperate with each other to form a cavity structure for injection molded products.

[0008] A side-mold mechanism is disposed on the side wall of the cavity structure for injection molding products from the side mold.

[0009] A side pushing mechanism is provided on the periphery of the side breading mechanism, used to push the side breading mechanism toward the product and prevent the side breading structure from retracting;

[0010] A slider is connected to the side-breading mechanism. The slider has a through hole in the middle and one side is a sloped surface, with the sloped surface being away from the end of the product.

[0011] A slider ejector rod penetrates the moving mold, and the top end of the slider ejector rod abuts against the inclined surface; it penetrates the slider during operation.

[0012] Top plate, wherein the top plate is fixedly connected to the slider top rod;

[0013] A mold core ejector rod extends through the moving mold, and a delay groove is provided on the mold core ejector rod;

[0014] A mold core ejector pin locking device is installed in the top plate and located below the delay groove to lock the mold core ejector pin.

[0015] Optionally, an ejector connecting block is fixedly connected below the top plate; the ejector connecting block and the injection molding machine push rod are connected by threads.

[0016] Optionally, the fixed mold is provided with a material outlet;

[0017] The injection mold slider ejector structure includes a material handle ejector pin, which passes through the top plate. A material handle delay sleeve is provided at the end of the material handle ejector pin away from the material outlet. The top end of the material handle ejector pin is used to eject excess material from the material outlet. When the top end of the slider ejector is in contact with the lowest point of the inclined surface of the slider, the top end of the material handle ejector pin is located at the bottom of the material outlet.

[0018] Optionally, the slider has a buckle on the side near the product to limit the vertical movement of the product.

[0019] On the other hand, this utility model also provides an injection mold, comprising:

[0020] Feeding device, used for feeding operations;

[0021] The injection mold slider ejector structure includes:

[0022] A fixed mold, wherein a first cavity with an opening is provided inside the fixed mold;

[0023] The moving mold has a second cavity with an opening, and the first cavity and the second cavity are used to cooperate with each other to form a cavity structure for injection molded products.

[0024] A side-mold mechanism is disposed on the side wall of the cavity structure for injection molding products from the side mold.

[0025] A side pushing mechanism is provided on the periphery of the side breading mechanism, used to push the side breading mechanism toward the product and prevent the side breading structure from retracting;

[0026] A slider is connected to the side-breading mechanism. The slider has a through hole in the middle and one side is a sloped surface, with the sloped surface being away from the end of the product.

[0027] A slider ejector rod penetrates the moving mold, and the top end of the slider ejector rod abuts against the inclined surface, penetrating the slider during operation;

[0028] Top plate, wherein the top plate is fixedly connected to the slider top rod;

[0029] A mold core ejector rod extends through the moving mold, and a delay groove is provided on the mold core ejector rod;

[0030] A mold core ejector pin locking device is provided in the top plate and located below the delay groove, used to lock the mold core ejector pin;

[0031] A material removal mechanism, connected to the top plate, is used to push the top plate to perform the material removal operation.

[0032] Optionally, an ejector connecting block is fixedly connected below the top plate; the ejector connecting block and the injection molding machine push rod are connected by threads.

[0033] Optionally, the fixed mold is provided with a material outlet;

[0034] The injection mold slider ejector structure includes a material handle ejector pin, which passes through the top plate. A material handle delay sleeve is provided at the end of the material handle ejector pin away from the material outlet. The top end of the material handle ejector pin is used to eject excess material from the material outlet. When the top end of the slider ejector pin contacts the lowest point of the inclined surface of the slider, the top end of the material handle ejector pin is located at the bottom of the material outlet.

[0035] Optionally, the slider has a buckle on the side near the product to limit the vertical movement of the product.

[0036] Through the above technical solution, this utility model provides a slider ejector structure for an injection mold and an injection mold. This ejector structure and injection mold, by improving the slider ejector structure, enable the slider to remain in the closed state without retraction when the moving and fixed molds separate, thus fixing the product. This improves the problem of product jamming and deformation caused by unreasonable injection mold structure, and therefore can be applied to multi-cavity molds and molds with high requirements for external dimensions. Attached Figure Description

[0037] Figure 1 This is a schematic diagram showing that, in order to prevent deformation, the mold slider needs to be completely detached from the parts on the fixed mold side before it can retract.

[0038] Figure 2 This is a schematic diagram of mold closure according to one embodiment of the present invention;

[0039] Figure 3This is a schematic diagram of the sliding block retracting to perform the sliding block mold opening action and the delayed ejection of the product and material ejector pins according to one embodiment of the present invention.

[0040] Figure 4 This is a schematic diagram showing the product and ejector pin being ejected after the slider mold opening action is completed according to one embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of a slider according to one embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram showing the specific position of the slider before mold opening in the entire injection mold slider ejector structure according to one embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram showing the specific position of the slider in the entire injection mold slider ejector structure after mold opening, according to one embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures

[0045] 1. Fixed mold; 2. Moving mold; 3. Upper ejector plate; 4. Lower ejector plate; 5. Ejector plate; 6. Side mold-making mechanism; 7. Side pushing mechanism; 8. Slider; 9. Slider ejector rod; 10. Mold core ejector rod; 11. Ejection connecting block; 12. Delay groove; 13. Mold core ejector rod lock; 14. Material handle ejector pin; 15. Material handle delay sleeve; 16. Material outlet; 17. Product; 18. Buckle. Detailed Implementation

[0046] In this utility model, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the indicated directions or positional relationships based on the vertical and horizontal directions of the accompanying drawings. In this document, "backward" refers to moving to the left or right in the horizontal direction.

[0047] like Figure 2 The diagram shown is one of the schematic diagrams of a slider ejector structure for an injection mold according to one embodiment of the present invention. Figure 2 In this injection mold, the slider ejector structure may include a fixed mold 1, a moving mold 2, an ejector plate 5, a side mold-wrapping mechanism 6, a side pushing mechanism 7, a slider 8, a slider ejector 9, a mold core ejector 10, a delay groove 12, and a mold core ejector lock 13. The ejector plate 5 may include an upper ejector plate 3 and a lower ejector plate 4.

[0048] Specifically, the fixed mold 1 has a first cavity with an opening, and the moving mold 2 has a second cavity with an opening. The first cavity and the second cavity are used to cooperate to form a cavity structure for injection molding products. A side-mold mechanism 6 can be disposed on the side wall of the cavity for injection molding of the product 17 from the side mold. A side-pushing mechanism 7 can be disposed around the side mold mechanism 6 for pushing the side mold mechanism 6 closer to the product 17. The side-pushing mechanism 7 can also prevent the side mold mechanism 6 from retracting to assist in molding.

[0049] The slider 8 can be connected to the side mold-making mechanism 6, and a through hole is provided in the middle of the slider 8. One side of the slider 8 is an inclined surface, with the inclined surface away from the end of the product 17. Specifically, the through hole is provided with an inclined surface on the side wall away from the product, wherein the angle distance (lateral distance) of the inclined surface is greater than the opening distance of the side mold-making mechanism 6, and the diameter of the top of the through hole is greater than the diameter of the slider ejector rod 9. The slider ejector rod 9 can penetrate the moving mold 2, and the top of the slider ejector rod 9 abuts against the inclined surface of the slider 8, penetrating the through hole of the slider 8 during operation. Since the slider ejector rod 9 penetrates the moving mold 2, it can only move in the vertical direction. Due to the inclined surface structure of the slider 8, when the slider ejector rod 9 rises, the slider 8 will be pushed out to both sides by the slider ejector rod 9, thereby completing the mold opening operation of the slider 8.

[0050] The top plate 5 is fixedly connected to the slider ejector rod 9; the mold core ejector rod 10 passes through the moving mold 2, and the mold core ejector rod 10 is provided with a delay groove 12; the mold core ejector rod locking 13 is provided in the top plate 5 and is located below the delay groove 12, used to lock the mold core ejector rod 10. The distance from the mold core ejector rod locking 13 to the delay groove 12 can be equal to the delayed ejection distance of the product 17. In the prior art, because conventional demolding mechanisms subject the product 17 to forces in multiple directions simultaneously at the moment of demolding, this leads to a high frequency of buckling and deformation of the product 17 during production. In this invention, a delayed ejection structure is adopted using the slider ejector rod 9 and the mold core ejector rod 10 in cooperation. Figure 3 As shown, the top of the slider ejector 9 abuts against the inclined surface of the slider 8. The machine's thrust causes the top plate 5 to move upward, thus directly pushing the slider 8 to both sides. Because the mold core ejector 10 is designed with a delay groove 12, which works in conjunction with the mold core ejector lock 13 to achieve delayed ejection of the product 17. As the top plate 5 continues to rise, the mold core ejector 10 can then eject the product 17, as shown in the corresponding schematic diagram. Figure 4 As shown.

[0051] In addition, in one example of this utility model, an ejector connecting block 11 is fixedly connected below the top plate 5; the ejector connecting block 11 and the injection molding machine push rod are connected by threads, and under the action of machine power or machine pulling force, the ejector connecting block 11 drives the top plate 5 to push upward or return downward.

[0052] To facilitate material injection, in one example of this utility model, the fixed mold 1 can be provided with a sprue 16. During the injection process, to ensure sufficient material injection into the product 17, some excess material will inevitably remain at the sprue after injection. Therefore, to remove this excess material during mold opening, the injection mold slider ejector structure can include a sprue ejector pin 14. This sprue ejector pin 14 penetrates the top plate 5, and a sprue delay sleeve 15 is provided at the end of the sprue ejector pin 14 away from the sprue 16. The top end of the sprue ejector pin 14 can be used to eject the excess material from the sprue 16. A similar delayed ejection structure, cooperating with the aforementioned slider ejector pin 9 and mold core ejector pin 10, is as follows: Figure 3 As shown, the top of the slider ejector 9 abuts against the inclined surface of the slider 8. The machine's thrust causes the top plate 5 to move upward, thus directly pushing the slider 8 to both sides. Because the feed handle ejector pin 14 is designed with a feed handle delay sleeve 15, it can achieve delayed ejection of the feed handle. As the top plate 5 continues to rise, the feed handle ejector pin 14 can eject excess feed material. The corresponding schematic diagram is shown below. Figure 4 As shown. Furthermore, in order to avoid the material feed being affected by the ejector pin 14, the top of the ejector pin 14 can be located at the bottom of the feed inlet 16 when the top of the slider ejector rod 9 is in contact with the lowest point of the inclined surface of the slider 8.

[0053] Furthermore, in one example of this utility model, to prevent the product 17 from being pulled upwards and deformed by the fixed mold 2 when the fixed mold 1 and the moving mold 2 separate, a buckle 18 for limiting the vertical movement of the product 17 is provided on the side of the slider 8 near the product. Figure 5 As shown. When the top of the slider ejector 9 abuts against the inclined surface of the slider 8, the latch 18 on the slider 8 covers the product 17, keeping the slider 8 in the closed state and preventing it from retracting to fix the product 17. This improves the problem of product 17 being deformed by the latch due to unreasonable injection mold structure. Figure 6 , Figure 7 These indicate the specific positions of the slider 8 before and after mold opening, and the buckle 18 on the slider 8, within the entire injection mold slider ejector structure.

[0054] On the other hand, this utility model also provides an injection mold, which may include a feeding device, such as... Figures 2 to 4 The diagram shows an injection mold slider ejector structure and a stripping mechanism. The feeding device is used for injection. The stripping mechanism can be connected to the top plate 5 of the injection mold slider ejector structure to push the top plate 5 to achieve the stripping operation. This injection mold slider ejector structure may include a fixed mold 1, a moving mold 2, a top plate 5, a side mold-wrapping mechanism 6, a side pushing mechanism 7, a slider 8, a slider ejector 9, a mold core ejector 10, a delay groove 12, and a mold core ejector lock 13. The top plate 5 may include an upper ejector plate 3 and a lower ejector plate 4.

[0055] Specifically, the fixed mold 1 has a first cavity with an opening, and the moving mold 2 has a second cavity with an opening. The first cavity and the second cavity are used to cooperate to form a cavity structure for injection molding products. A side-mold mechanism 6 can be disposed on the side wall of the cavity for injection molding of the product 17 from the side mold. A side-pushing mechanism 7 can be disposed around the side mold mechanism 6 for pushing the side mold mechanism 6 closer to the product 17. The side-pushing mechanism 7 can also prevent the side mold mechanism 6 from retracting to assist in molding.

[0056] The slider 8 can be connected to the side mold-making mechanism 6, and a through hole is provided in the middle of the slider 8. One side of the slider 8 is an inclined surface, with the inclined surface away from the end of the product 17. Specifically, the through hole is provided with an inclined surface on the side wall away from the product, wherein the angle distance (lateral distance) of the inclined surface is greater than the opening distance of the side mold-making mechanism 6, and the diameter of the top of the through hole is greater than the diameter of the slider ejector rod 9. The slider ejector rod 9 can penetrate the moving mold 2, and the top of the slider ejector rod 9 abuts against the inclined surface of the slider 8, penetrating the through hole of the slider 8 during operation. Since the slider ejector rod 9 penetrates the moving mold 2, it can only move in the vertical direction. Due to the inclined surface structure of the slider 8, when the slider ejector rod 9 rises, the slider 8 will be pushed out to both sides by the slider ejector rod 9, thereby completing the mold opening operation of the slider 8.

[0057] The top plate 5 is fixedly connected to the slider ejector rod 9; the mold core ejector rod 10 passes through the moving mold 2, and the mold core ejector rod 10 is provided with a delay groove 12; the mold core ejector rod locking 13 is provided in the top plate 5 and is located below the delay groove 12, used to lock the mold core ejector rod 10. The distance from the mold core ejector rod locking 13 to the delay groove 12 can be equal to the delayed ejection distance of the product 17. In the prior art, because conventional demolding mechanisms subject the product 17 to forces in multiple directions simultaneously at the moment of demolding, this leads to a high frequency of buckling and deformation of the product 17 during production. In this invention, a delayed ejection structure is adopted using the slider ejector rod 9 and the mold core ejector rod 10 in cooperation. Figure 3 As shown, the top of the slider ejector 9 abuts against the inclined surface of the slider 8. The machine's thrust causes the top plate 5 to move upward, thus directly pushing the slider 8 to both sides. Because the mold core ejector 10 is designed with a delay groove 12, which works in conjunction with the mold core ejector lock 13 to achieve delayed ejection of the product 17. As the top plate 5 continues to rise, the mold core ejector 10 can then eject the product 17, as shown in the corresponding schematic diagram. Figure 4 As shown.

[0058] In addition, in one example of this utility model, an ejector connecting block 11 is fixedly connected below the top plate 5; the ejector connecting block 11 and the injection molding machine push rod are connected by threads, and under the action of machine power or machine pulling force, the ejector connecting block 11 drives the top plate 5 to push upward or return downward.

[0059] To facilitate material injection, in one example of this utility model, the fixed mold 1 can be provided with a sprue 16. During the injection process, to ensure sufficient material injection into the product 17, some excess material will inevitably remain at the sprue after injection. Therefore, to remove this excess material during mold opening, the injection mold slider ejector structure can include a sprue ejector pin 14. This sprue ejector pin 14 penetrates the top plate 5, and a sprue delay sleeve 15 is provided at the end of the sprue ejector pin 14 away from the sprue 16. The top end of the sprue ejector pin 14 can be used to eject the excess material from the sprue 16. A similar delayed ejection structure, cooperating with the aforementioned slider ejector pin 9 and mold core ejector pin 10, is as follows: Figure 3 As shown, the top of the slider ejector 9 abuts against the inclined surface of the slider 8. The machine's thrust causes the top plate 5 to move upward, thus directly pushing the slider 8 to both sides. Because the feed handle ejector pin 14 is designed with a feed handle delay sleeve 15, it can achieve delayed ejection of the feed handle. As the top plate 5 continues to rise, the feed handle ejector pin 14 can eject excess feed material. The corresponding schematic diagram is shown below. Figure 4 As shown. Furthermore, in order to avoid the material feed being affected by the ejector pin 14, the top of the ejector pin 14 can be located at the bottom of the feed inlet 16 when the top of the slider ejector rod 9 is in contact with the lowest point of the inclined surface of the slider 8.

[0060] Furthermore, in one example of this utility model, to prevent the product 17 from being pulled upwards and deformed by the fixed mold 2 when the fixed mold 1 and the moving mold 2 separate, a buckle 18 for limiting the vertical movement of the product 17 is provided on the side of the slider 8 near the product. Figure 5 As shown. When the top of the slider ejector 9 abuts against the inclined surface of the slider 8, the latch 18 on the slider 8 covers the product 17, keeping the slider 8 in the closed state and preventing it from retracting to fix the product 17. This improves the problem of product 17 being deformed by the latch due to unreasonable injection mold structure. Figure 6 , Figure 7 These indicate the specific positions of the slider 8 before and after mold opening, and the buckle 18 on the slider 8, within the entire injection mold slider ejector structure.

[0061] Through the above technical solution, this utility model provides a slider ejector structure for an injection mold and an injection mold. This ejector structure and injection mold, by improving the slider ejector structure, enable the slider to remain in the closed state without retraction when the moving and fixed molds separate, thus fixing the product. This improves the problem of product jamming and deformation caused by unreasonable injection mold structure, and therefore can be applied to multi-cavity molds and molds with high requirements for external dimensions.

[0062] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various specific technical features in any suitable manner. For example, the top plate includes an upper ejector plate and a lower ejector plate. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A slider ejector pin structure for an injection mold, characterized in that, include: A fixed mold, wherein a first cavity with an opening is provided inside the fixed mold; The moving mold has a second cavity with an opening, and the first cavity and the second cavity are used to cooperate with each other to form a cavity structure for injection molded products. A side-mold mechanism is disposed on the side wall of the cavity structure for injection molding products from the side mold. A side pushing mechanism is provided on the periphery of the side breading mechanism, used to push the side breading mechanism toward the product and prevent the side breading structure from retracting; A slider is connected to the side-breading mechanism. The slider has a through hole in the middle and one side is a sloped surface, with the sloped surface being away from the end of the product. A slider ejector rod penetrates the moving mold, and the top end of the slider ejector rod abuts against the inclined surface, penetrating the slider during operation; Top plate, wherein the top plate is fixedly connected to the slider top rod; A mold core ejector rod extends through the moving mold, and a delay groove is provided on the mold core ejector rod; A mold core ejector pin locking device is installed in the top plate and located below the delay groove to lock the mold core ejector pin.

2. The injection mold slider ejector structure according to claim 1, characterized in that, An ejector connecting block is fixedly connected below the top plate, and the ejector connecting block and the injection molding machine push rod are connected by threads.

3. The injection mold slider ejector structure according to claim 1, characterized in that, The fixed mold is provided with a material outlet; The injection mold slider ejector structure includes a material handle ejector pin, which passes through the top plate. A material handle delay sleeve is provided at the end of the material handle ejector pin away from the material outlet. The top end of the material handle ejector pin is used to eject excess material from the material outlet. When the top end of the slider ejector pin contacts the lowest point of the inclined surface of the slider, the top end of the material handle ejector pin is located at the bottom of the material outlet.

4. The injection mold slider ejector structure according to claim 1, characterized in that, The slider has a buckle on the side closest to the product to limit the vertical movement of the product.

5. An injection mold, characterized in that, include: Feeding device, used for feeding operations; The injection mold slider ejector structure includes: A fixed mold, wherein a first cavity with an opening is provided inside the fixed mold; The moving mold has a second cavity with an opening, and the first cavity and the second cavity are used to cooperate with each other to form a cavity structure for injection molded products. A side-mold mechanism is disposed on the side wall of the cavity structure for injection molding products from the side mold. A side pushing mechanism is provided on the periphery of the side breading mechanism, used to push the side breading mechanism toward the product and prevent the side breading structure from retracting; A slider is connected to the side-breading mechanism. The slider has a through hole in the middle and one side is a sloped surface, with the sloped surface being away from the end of the product. A slider ejector rod penetrates the moving mold, and the top end of the slider ejector rod abuts against the inclined surface, penetrating the slider during operation; Top plate, wherein the top plate is fixedly connected to the slider top rod; A mold core ejector rod extends through the moving mold, and a delay groove is provided on the mold core ejector rod; A mold core ejector pin locking device is provided in the top plate and located below the delay groove, used to lock the mold core ejector pin; A material removal mechanism, connected to the top plate, is used to push the top plate to perform the material removal operation.

6. The injection mold according to claim 5, characterized in that, An ejector connecting block is fixedly connected below the top plate, and the ejector connecting block and the injection molding machine push rod are connected by threads.

7. The injection mold according to claim 5, characterized in that, The fixed mold is provided with a material outlet; The injection mold slider ejector structure includes a material handle ejector pin, which passes through the top plate. A material handle delay sleeve is provided at the end of the material handle ejector pin away from the material outlet. The top end of the material handle ejector pin is used to eject excess material from the material outlet. When the top end of the slider ejector pin contacts the lowest point of the inclined surface of the slider, the top end of the material handle ejector pin is located at the bottom of the material outlet.

8. The injection mold according to claim 5, characterized in that, The slider has a buckle on the side closest to the product to limit the vertical movement of the product.

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