Combined injection mold

Abstract

The utility model discloses a combined type injection mold which comprises a lower mold, an upper mold and a lower mold, the fixed inclined block is fixedly connected to one side of the lower die, and the top of the fixed inclined block is of an inclined plane structure; the upper die is arranged at the top of the lower die, a moving groove is formed in the middle of the lower die, a shaping push block is arranged in the moving groove in a sliding mode, an ejection assembly is arranged on one side of the shaping push block, and the ejection assembly comprises a first spring used for ejecting the shaping push block; the mold has the beneficial effects that the movable groove can be automatically reset and separated when the upper mold and the lower mold are assembled and disassembled under the matching action of the fixed inclined block, the shaping push block and the first spring, so that the interior of the mold can be conveniently and quickly positioned, the mold is allowed to adapt to complex product shapes, and the production efficiency is improved. And the mold can quickly release the molded product after injection molding is completed, so that the production cycle time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a combined injection mold. Background Art

[0002] In the production and processing of office furniture, injection molds can be used to manufacture various complex and precise plastic parts. Among them, combined injection molds are also widely used in office furniture processing, mainly because they provide a high degree of flexibility and efficiency, and are suitable for producing complex and multifunctional office furniture parts.

[0003] In the processing of existing combined molds, they are often driven and combined by an oil cylinder or other driving components. Therefore, in the use process, it is necessary to connect with an additional pumping station for cooperative control. It cannot automatically realize the automatic reset and separation of the internal structure, which is inconvenient for quickly positioning the inside, making the mold unable to adapt to complex product shapes. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a combined injection mold to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A combined injection mold, comprising:

[0006] A lower mold, which is a metal block with a lower mold cavity provided at the top.

[0007] A fixed inclined block, which is fixedly connected to one side of the lower mold, and the top of the fixed inclined block is of an inclined surface structure.

[0008] An upper mold, which is placed on the top of the lower mold. A moving groove is provided in the middle of the upper mold. A shaping push block is slidably arranged inside the moving groove. A top-out assembly is arranged on one side of the shaping push block. The top-out assembly includes a first spring for pushing out the shaping push block. When the upper mold and the lower mold are demolded, the first spring drives the shaping push block to slide outwards. A ejector pin is slidably connected in the middle of the shaping push block.

[0009] Preferably, guide columns are fixedly connected to the four corners of the top of the lower mold, and guide holes for cooperating with the guide columns are provided at the bottom of the upper mold.

[0010] Preferably, the position of the bottom of the shaping push block corresponding to the fixed inclined block is an inclined angle for cooperating with the inclined surface structure.

[0011] Preferably, a sliding groove is provided at the top of the upper mold. A limiting baffle is slidably connected inside the sliding groove. A plurality of limiting rods are fixedly connected to the middle of the limiting baffle. The first spring is sleeved outside the limiting rods.

[0012] Preferably, the limiting rod is slidably connected to the upper mold. One end of the limiting rod is fixedly connected to a connecting plate, and the connecting plate is fixedly connected to the shaping push block.

[0013] Preferably, one side of the upper mold is fixedly connected to a connecting block. One end of the connecting block is fixedly connected to a fixed sliding rod. The outer side of the fixed sliding rod is slidably connected to a U-shaped thimble holder. One end of the fixed sliding rod is fixedly connected to a limiting plate. A second spring is installed between the thimble holder and the limiting plate.

[0014] Preferably, the end of the thimble is fixedly connected to the thimble holder.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing the fixed inclined block, the shaping push block and the cooperation of the first spring, when the upper mold and the lower mold are closed and separated, the automatic reset and separation of the moving groove can be realized, which is convenient for quickly positioning its interior, allowing the mold to adapt to complex product shapes, facilitating the rapid demolding of the product, and enabling the mold to quickly release the molded product after injection molding, reducing the production cycle time and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is a schematic structural view of the moving groove of the present utility model;

[0018] Figure 3 is a schematic internal structural view of the sliding groove of the present utility model;

[0019] Figure 4 is a schematic structural view of the connecting block of the present utility model;

[0020] Figure 5 is a schematic structural view of the shaping push block of the present utility model.

[0021] In the figure: 1. Upper mold; 2. Lower mold; 3. Guide post; 4. Lower film cavity; 5. Fixed inclined block; 6. Moving groove; 7. Shaping push block; 8. Thimble holder; 9. Thimble; 10. Fixed sliding rod; 11. Second spring; 12. Sliding groove; 13. First spring; 14. Limiting rod; 15. Limiting baffle; 16. Connecting plate; 17. Connecting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figure 1 、 2 As shown in Figures 3, 4, and 5, the present invention provides a technical solution: a combined injection mold, including: a lower mold 2, which is a stainless steel block with a lower mold cavity 4 provided at the top. The lower mold cavity 4 is the forming space for the seat base; a fixed inclined block 5 is installed on one side of the lower mold 2 through bolts. The top of the fixed inclined block 5 is a slope structure, and the cross-section of the upper half of the fixed inclined block 5 is smaller than that of the lower half. When the upper mold 1 and the lower mold 2 are closed, the fixed inclined block 5 pushes the shaping push block 7 into the moving groove 6 and positions it; the upper mold 1 is placed on the top of the lower mold 2. A moving groove 6 is opened in the middle of the upper mold 1. A shaping push block 7 is slidably arranged inside the moving groove 6. The gap between the shaping push block 7 and the moving groove 6 forms the forming space for the seat back. A top ejection assembly is arranged on one side of the shaping push block 7. The top ejection assembly includes a first spring 13 for ejecting the shaping push block 7. When the upper mold 1 and the lower mold 2 are separated, the first spring 13 drives the shaping push block 7 to slide outwardly. A thimble 9 is slidably connected to the middle of the shaping push block 7.

[0024] It should be noted that when the upper mold 1 and the lower mold 2 are closed downward in the present invention, the top of the slope structure of the fixed inclined block 5 is located outside the shaping push block 7. When the upper mold 1 moves downward, under the action of the slope structure, the shaping push block 7 moves into the moving groove 6. When the upper mold 1 and the lower mold 2 are closed, the shaping push block 7 is squeezed by the fixed inclined block 5 to a specified position. A cavity is formed between the end of the shaping push block 7 and one end of the inner wall of the moving groove 6. The injection molding material is injected into the closed mold through the top injection port. A plurality of water channels are provided inside the upper mold 1 and the lower mold 2, and the water channels are connected to the cooling water circuit. When the molding is completed, the upper mold 1 moves upward. When the shaping push block 7 is misaligned and separated from the fixed inclined block 5, under the action of the first spring 13, the shaping push block 7 moves outwardly of the moving groove 6, thereby realizing the adjustment of the forming space. And when the shaping push block 7 contacts the thimble holder 8, the thimble 9 penetrates from one side of the shaping push block 7, thereby demolding the product. By setting the fixed inclined block 5 and the shaping push block 7 and cooperating with the first spring 13, when the upper mold 1 and the lower mold 2 are closed and separated, the automatic reset and separation of the moving groove 6 can be realized, which is convenient for quickly positioning its interior, allowing the mold to adapt to complex product shapes and facilitating the quick demolding of the product.

[0025] Please refer to Figure 1As shown in the figure, guide posts 3 are fixedly connected to the four corners at the top of the lower die 2. Guide holes that cooperate with the guide posts 3 are provided at the bottom of the upper die 1. The position at the bottom of the shaping push block 7 corresponding to the fixed inclined block 5 is an inclined angle that cooperates with the inclined plane structure.

[0026] It should be noted that through the cooperation of the guide posts 3 and the guide holes, when the upper die 1 and the lower die 2 are closed, the present utility model can be quickly and accurately aligned, and the cooperation between the fixed inclined block 5 and the shaping push block 7 can be better realized to achieve pressurized pushing and resetting, and rapid automatic resetting can be achieved during die closing.

[0027] Please refer to Figure 2 、 3 As shown in Figures 4, a sliding groove 12 is formed at the top of the upper die 1. A limiting baffle 15 is slidably connected inside the sliding groove 12. A plurality of limiting rods 14 are fixedly connected to the middle of the limiting baffle 15. A first spring 13 is sleeved outside the limiting rods 14. The limiting rods 14 are slidably connected to the upper die 1. One end of the limiting rod 14 is fixedly connected to a connecting plate 16. The connecting plate 16 is fixedly connected to the shaping push block 7.

[0028] It should be noted that when the upper die 1 and the lower die 2 are separated and the contact between the shaping push block 7 and the fixed inclined block 5 is misaligned, the first spring 13 pushes the limiting baffle 15 to slide in the sliding groove 12 from one side. The limiting baffle 15 drives the limiting rods 14 and the connecting plate 16 to move towards one end. The connecting plate 16 drives the shaping push block 7 to slide out of the moving groove 6, thereby adjusting the space after the workpiece is formed, causing the inside of the upper die 1 to move towards one side, which is convenient for separating and demolding complex product shapes.

[0029] Please refer to Figure 1 As shown in the figure, a connecting block 17 is fixedly connected to one side of the upper die 1. A fixed sliding rod 10 is fixedly connected to one end of the connecting block 17. A U-shaped thimble holder 8 is slidably connected to the outside of the fixed sliding rod 10. A limiting plate is fixedly connected to one end of the fixed sliding rod 10. A second spring 11 is installed between the thimble holder 8 and the limiting plate. The end of the thimble 9 is fixedly connected to the thimble holder 8.

[0030] It should be noted that when the first spring 13 drives the shaping push block 7 to move towards one end through the connecting plate 16, the gap between the moving groove 6 and the shaping push block 7 becomes larger. During this period, the thimble holder 8 is connected to the upper die 1 and there is no relative displacement, so that the thimble 9 passes through one end of the shaping push block 7. When the shaping push block 7 contacts the thimble holder 8, the first spring 13 compresses the second spring 11 through the thimble holder 8. At this time, the distance between the thimble 9 and the end of the moving groove 6 becomes larger, which is convenient for the product to fall off.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0032] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0033] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A combined injection mold, characterized in that: include: A lower mold (2), the lower mold (2) is a metal block with a lower film cavity (4) on the top; A fixed oblique block (5), the fixed oblique block (5) is fixedly connected to one side of the lower mold (2), and the top of the fixed oblique block (5) is an inclined surface structure; An upper mold (1) is placed on the top of the lower mold (2), a movable groove (6) is opened in the middle of the upper mold (1), a shaping push block (7) is slidably arranged inside the movable groove (6), an ejection assembly is arranged on one side of the shaping push block (7), and the ejection assembly includes a No. 1 spring (13) for ejecting the shaping push block (7), when the upper mold (1) and the lower mold (2) are separated, the No. 1 spring (13) drives the shaping push block (7) to slide outward, and an ejector pin (9) is slidably connected to the middle of the shaping push block (7).

2. A combined injection mold according to claim 1, characterized in that: The four corners of the top of the lower mold (2) are fixedly connected with guide columns (3), and the bottom of the upper mold (1) is provided with guide holes that cooperate with the guide columns (3).

3. The combined injection mold according to claim 1, characterized in that: The position of the bottom of the shaping push block (7) corresponding to the fixed inclined block (5) is an inclined angle matched with the inclined surface structure.

4. The combined injection mold according to claim 1, characterized in that: A slide groove (12) is provided at the top of the upper mold (1), and a limit baffle (15) is slidably connected inside the slide groove (12). A plurality of limit rods (14) are fixedly connected to the middle of the limit baffle (15), and the No. 1 spring (13) is sleeved on the outer side of the limit rod (14).

5. A combined injection mold according to claim 4, characterized in that: The limiting rod (14) is slidably connected to the upper mold (1), one end of the limiting rod (14) is fixedly connected to a connecting plate (16), and the connecting plate (16) is fixedly connected to the shaping push block (7).

6. The combined injection mold according to claim 1, characterized in that: A connecting block (17) is fixedly connected to one side of the upper mold (1), one end of the connecting block (17) is fixedly connected to a fixed slide rod (10), the outer side of the fixed slide rod (10) is slidably connected to a U-shaped ejector frame (8), one end of the fixed slide rod (10) is fixedly connected to a limit plate, and a No. 2 spring (11) is installed between the ejector frame (8) and the limit plate.

7. The combined injection mold according to claim 1, characterized in that: The end of the ejector pin (9) is fixedly connected to the ejector pin frame (8).

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