Stable core pulling device for injection mold

Abstract

The utility model discloses a stable core-pulling device for an injection mold, which belongs to the field of injection molds, and comprises a base, an upper mold and a lower mold, the lower mold is fixedly connected above the base, a sliding block is slidably connected in the lower mold, a chute is arranged in the sliding block, and the upper mold and the lower mold are arranged in the chute. The lower portion of the upper die is fixedly connected with an inclined plate, the inclined plate is inserted into the inclined groove, one side of each sliding block is fixedly connected with a second spring, and the end, away from the corresponding sliding block, of each second spring is fixedly connected into the lower die. When the inclined plate is completely separated from the interior of the inclined groove, the two sliding blocks can be reset, through the design, when core pulling is carried out on the injection mold, no additional driving mechanism is needed, core pulling can be completed by means of upward force of the mold, no additional driving mechanism is needed, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, and more specifically to a stable core-pulling device for injection molds. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds. After injection molding, core pulling operation is required.

[0003] The Chinese patent authorization announcement number: CN208529632U ​​provides an injection mold core pulling device with accurate positioning, which includes a core, a core is arranged through the core, and a slide plate, one side of the slide plate is connected to the core through a connecting block, and the other side of the slide plate is provided with a top block for squeezing the slide plate, a compression spring is arranged between the slide plate and the core, an optical axis is arranged through the slide plate, the setting direction of the optical axis is consistent with the setting direction of the core, and one end of the optical axis is connected to the core.

[0004] However, in the above patents, when the injection mold is cored, it is often necessary to separately install driving components such as electric cylinders inside the injection mold. Although this can achieve the purpose of core pulling, the structure is relatively complex, and the manufacturing cost will also be increased during the production process, so that the power of the mold rising cannot be fully utilized.

[0005] Therefore, in view of the above problems, a stable core-pulling device for an injection mold is proposed. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] In view of the problems existing in the prior art, the purpose of the utility model is to provide a stable core pulling device for an injection mold to solve the problems raised in the above background technology.

[0008] 2. Technical solution

[0009] To solve the above problems, the utility model adopts the following technical solutions.

[0010] A stable core pulling device for an injection mold comprises a base, an upper mold and a lower mold, wherein the lower mold is fixedly connected to the top of the base, a sliding block is slidably connected to the interior of the lower mold, an inclined groove is provided inside the sliding block, an inclined plate is fixedly connected to the bottom of the upper mold, the inclined plate is inserted into the inside of the inclined groove, a No. 2 spring is fixedly connected to one side of the sliding block, one end of the No. 2 spring away from the sliding block is fixedly connected to the inside of the lower mold, a No. 1 spring is fixedly connected to the bottom of the lower mold, a limiting block is fixedly connected to the top of the No. 1 spring, and the limiting block is clamped under the sliding block.

[0011] Furthermore, a mounting rod is fixedly connected to the top of the base, a top plate is fixedly connected to the top of the mounting rod, and an electric cylinder is fixedly connected to the top of the top plate.

[0012] Furthermore, the output end of the electric cylinder is fixedly connected to a connecting plate through the top plate, and the bottom end of the connecting plate is fixedly connected to the top of the upper mold.

[0013] Furthermore, an injection hole is opened above the upper mold, the injection hole is connected to the interior of the upper mold, and the injection hole is located in the middle of the upper mold.

[0014] Furthermore, a supporting foot is fixedly connected below the base.

[0015] Furthermore, a fixing rod is fixedly connected to the upper part of the upper mold, and the fixing rod is slidably connected to the top plate.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] In this solution, as the upper mold gradually moves upward, the distance between the two sliding blocks will gradually increase. When the inclined plate is completely disengaged from the inside of the inclined groove, the two sliding blocks will complete the reset. Through this design, there is no need to use an additional driving mechanism when pulling the core of the injection mold. The core pulling can be completed with the help of the upward force of the upper mold, and no additional driving mechanism is required, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection relationship between the sliding block and the lower mold in the utility model;

[0021] Figure 3 It is a schematic diagram of the positional relationship between the inclined plate and the inclined slot in the utility model;

[0022] Figure 4For the utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0023] Description of the numbers in the figure:

[0024] 1. Base; 11. Mounting rod; 12. Top plate; 13. Electric cylinder; 14. Connecting plate; 15. Upper mold; 16. Fixing rod; 17. Injection hole; 18. Inclined plate; 19. Lower mold; 2. Spring No. 1; 21. Limit block; 22. Sliding block; 23. Inclined groove; 24. Spring No. 2; 25. Support foot. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example:

[0029] See also Figure 1-4A stable core pulling device for an injection mold comprises a base 1, an upper mold 15 and a lower mold 19. The lower mold 19 is fixedly connected to the top of the base 1. A sliding block 22 is slidably connected to the interior of the lower mold 19. An inclined groove 23 is provided inside the sliding block 22. An inclined plate 18 is fixedly connected to the bottom of the upper mold 15. The inclined plate 18 is inserted into the inside of the inclined groove 23. A No. 2 spring 24 is fixedly connected to one side of the sliding block 22. One end of the No. 2 spring 24 away from the sliding block 22 is fixedly connected to the inside of the lower mold 19. A No. 1 spring 2 is fixedly connected to the bottom of the lower mold 19. A limit block 21 is fixedly connected to the top of the No. 1 spring 2. The limit block 21 is clamped under the sliding block 22. In this solution, when the upper mold 15 moves downward, the inclined plate 18 will gradually insert into the inner part of the inclined groove 23. Into the interior of the inclined groove 23, during the process of the inclined plate 18 gradually being inserted into the interior of the inclined groove 23, the sliding block 22 will gradually move toward the middle direction of the lower mold 19. When the inclined plate 18 is fully inserted into the interior of the inclined groove 23, the side of the sliding block 22 away from the No. 2 spring 24 will fit with one side of the lower mold 19. During the movement of the sliding block 22 toward the middle of the lower mold 19, the outer wall of the limit block 21 will be squeezed by the bottom of the sliding block 22. After the outer wall of the limit block 21 is squeezed, the limit block 21 will gradually move to the interior of the lower mold 19. At this time, the No. 1 spring 2 will also undergo elastic deformation and contraction and store a certain amount of elastic potential energy. In addition, during the movement of the sliding block 22 toward the middle of the lower mold 19, the No. 2 spring 24 will undergo elastic deformation and stretching.

[0030] See also Figure 1-4 A mounting rod 11 is fixedly connected to the top of the base 1, a top plate 12 is fixedly connected to the top of the mounting rod 11, and an electric cylinder 13 is fixedly connected to the top of the top plate 12. In this solution, the electric cylinder 13 is installed in the middle part above the top plate 12, and the mounting rod 11 serves as a connection between the base 1 and the top plate 12.

[0031] See also Figure 1-4 The output end of the electric cylinder 13 passes through the top plate 12 and is fixedly connected to a connecting plate 14, and the bottom end of the connecting plate 14 is fixedly connected to the top of the upper mold 15. In this solution, the connecting plate 14 connects the upper mold 15 and the output end of the electric cylinder 13, and the upper mold 15 is lifted and lowered by moving the output end of the electric cylinder 13 up and down.

[0032] See also Figure 1-4 An injection hole 17 is provided above the upper mold 15 , and the injection hole 17 is connected to the interior of the upper mold 15 . The injection hole 17 is located in the middle above the upper mold 15 . In this solution, the user can perform injection molding into the interior of the upper mold 15 through the injection hole 17 .

[0033] See also Figure 1-4A supporting foot 25 is fixedly connected to the bottom of the base 1. In this solution, the base 1 is placed on the ground through the supporting foot 25.

[0034] See also Figure 1-4 A fixing rod 16 is fixedly connected to the top of the upper mold 15, and the fixing rod 16 is slidably connected to the top plate 12. In this solution, the fixing rod 16 plays a limiting role between the upper mold 15 and the top plate 12, which can ensure that the bottom surface and the top surface of the upper mold 15 are always parallel to the top plate 12.

[0035] Working principle: When in use, the user starts the electric cylinder 13. As the output end of the electric cylinder 13 moves downward, the distance between the upper mold 15 and the lower mold 19 will gradually decrease. When the upper mold 15 moves downward, the inclined plate 18 will gradually insert into the inclined groove 23. In the process of the inclined plate 18 gradually inserting into the inclined groove 23, the sliding block 22 will gradually move toward the middle of the lower mold 19. When the inclined plate 18 is fully inserted into the inclined groove 23, the side of the sliding block 22 away from the No. 2 spring 24 will fit with one side of the lower mold 19. In the process of the sliding block 22 moving toward the middle of the lower mold 19, the bottom of the sliding block 22 will squeeze the outer wall of the limit block 21. After the outer wall of the limit block 21 is squeezed, the limit block 21 will gradually move to the inside of the lower mold 19. At this time, the No. 1 spring 2 will also undergo elastic deformation and contraction and store a certain amount of elastic potential energy. In addition, in the process of the sliding block 22 moving toward the middle of the lower mold 19 , the second spring 24 will undergo elastic deformation and stretching. When one side of the two sliding blocks 22 is in contact with one side of the lower mold 19, injection molding can be performed into the upper mold 15 through the injection hole 17. After the injection molding material between the upper mold 15 and the lower mold 19 is cooled and formed, the electric cylinder 13 is started again to move the output end of the electric cylinder 13 upward. In the process of the output end of the electric cylinder 13 moving upward, the distance between the two sliding blocks 22 will gradually increase, and the inclined plate 18 will gradually disengage from the inside of the inclined groove 23. When the inclined plate 18 is completely disengaged from the inside of the inclined groove 23, the second spring 24 is completely reset, thereby driving the sliding block 22 to reset. After the sliding block 22 is reset, the No. 1 spring 2, which was previously in an elastic contraction state, will also reset and rebound, so that the limit block 21 will re-complete the clamping connection with the bottom of the sliding block 22, and the one side of the two sliding blocks 22 will release the fit with the lower mold 19, making it more convenient to demould the finished product.

[0036] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A stable core pulling device for an injection mold, comprising a base (1), an upper mold (15) and a lower mold (19), characterized in that: The lower mold (19) is fixedly connected to the top of the base (1); a sliding block (22) is slidably connected inside the lower mold (19); an inclined groove (23) is provided inside the sliding block (22); an inclined plate (18) is fixedly connected below the upper mold (15); the inclined plate (18) is inserted into the inclined groove (23); a second spring (24) is fixedly connected to one side of the sliding block (22); an end of the second spring (24) away from the sliding block (22) is fixedly connected to the inside of the lower mold (19); a first spring (2) is fixedly connected below the lower mold (19); a limit block (21) is fixedly connected above the first spring (2); and the limit block (21) is clamped below the sliding block (22).

2. A stable core-pulling device for an injection mold according to claim 1, characterized in that: A mounting rod (11) is fixedly connected above the base (1), a top plate (12) is fixedly connected above the mounting rod (11), and an electric cylinder (13) is fixedly connected above the top plate (12).

3. A stable core-pulling device for an injection mold according to claim 2, characterized in that: The output end of the electric cylinder (13) passes through the top plate (12) and is fixedly connected to a connecting plate (14), and the bottom end of the connecting plate (14) is fixedly connected above the upper mold (15).

4. The stable core-pulling device for an injection mold according to claim 1, characterized in that: An injection hole (17) is provided above the upper mold (15), the injection hole (17) is communicated with the interior of the upper mold (15), and the injection hole (17) is located in the middle of the upper part of the upper mold (15).

5. The stable core-pulling device for injection mold according to claim 1, characterized in that: A supporting foot (25) is fixedly connected to the bottom of the base (1).

6. The stable core-pulling device for injection mold according to claim 3, characterized in that: A fixing rod (16) is fixedly connected above the upper mold (15), and the fixing rod (16) is slidably connected to the top plate (12).

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