Injection mold ejection structure

Abstract

The utility model discloses an ejection structure of an injection mold, which belongs to the field of injection molds and comprises a base and a top plate, four upright posts are fixedly connected between the base and the top plate, a lower mold is fixedly arranged between the base and the top plate, and an upper mold is fixedly arranged between the base and the top plate. The top surface of the base is fixedly connected with a bottom plate, the top of the bottom plate is provided with a push plate, the push plate is arranged between the bottom plate and the lower mold, one side of the push plate is fixedly connected with a motor, the interior of the push plate is rotationally connected with a rotating rod, and one end of the rotating rod penetrates through one side of the inner wall of the push plate and is in transmission connection with the output end of the motor; according to the device, the situation that a finished product cannot be ejected out due to insufficient elastic force of a spring in a traditional device can be effectively avoided, and the situation that the quality of the finished product is affected due to the fact that the force is too large when the device ejects the finished product can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, and more particularly to an ejection structure of an injection mold. Background Art

[0002] The main function of the ejector structure of the injection mold is to eject the solidified plastic product from the mold cavity during the injection molding process for removal and subsequent processing.

[0003] Chinese patent authorization announcement number: CN215283194U provides "an injection mold ejection structure". After the injection molded product is finalized, the electric push rod drives the movable mold to move upward, so that the movable mold is separated from the mold base, and the arc is separated from the top of the ejector rod. At the same time, the spring returns to its original state. The elastic force of the spring brings an upward elastic force to the ejector rod, and the ejector rod simultaneously brings an upward elastic force to the ejector plate, so that the ejector plate pops up inside the port, so that the ejector plate contacts the finalized injection molded product, thereby ejecting the finalized injection molded product, so that the finalized injection molded product can be quickly separated from the mold cavity, further improving work efficiency.

[0004] However, in actual use, the device in the above patent, which only uses spring force to lift the finished product, is not suitable for injection molded products of different specifications. Sometimes the spring force is not enough to completely lift the finished product, and the staff still needs to manually take out the finished product, thereby reducing the production efficiency of the device.

[0005] Therefore, in order to solve the above problems, an injection mold ejection structure is proposed. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] In response to the problems existing in the prior art, the purpose of the present invention is to provide an injection mold ejection structure, which can effectively avoid the situation where the spring force in the traditional device is insufficient to eject the finished product, and can effectively avoid the device using too much force when ejecting the finished product, thereby affecting the quality of the finished product.

[0008] 2. Technical solution

[0009] In order to solve the above problems, the present invention adopts the following technical solutions.

[0010] The top of the two screw rods is fixedly connected with the bottom surface of the push plate, and the top of the two screw rods is screwed on the bottom surface of the push plate.

[0011] Furthermore, four guide telescopic rods are fixedly connected to the top surface of the bottom plate, and the tops of the four guide telescopic rods are fixedly connected to the bottom surface of the push plate.

[0012] Furthermore, four evenly distributed fixed cylinders are fixedly connected to the top surface of the push plate, and push rods are slidably connected inside the four fixed cylinders.

[0013] Furthermore, a buffer spring is fixedly provided between the fixed cylinder and the push rod, and the tops of the four push rods are fixedly connected with push blocks.

[0014] Furthermore, the bottom surface of the inner wall of the lower mold is provided with four evenly distributed through holes, and the four push blocks are slidably connected to the inside of the four through holes respectively.

[0015] Furthermore, the upper mold is slidably connected to the four columns, and the lower mold is fixedly connected to the four columns.

[0016] Furthermore, a hydraulic cylinder is fixedly connected to the top of the top plate, and a telescopic end of the hydraulic cylinder passes through the top surface of the top plate and is fixedly connected to the top surface of the upper mold.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) In this solution, a motor is set to drive the rotating rod to rotate, thereby cooperating with the No. 1 bevel gear and the No. 2 bevel gear to lift the screw in the fixed sleeve rod to raise the push plate, and cooperating with the push rod to push the push block out of the through hole, thereby ejecting the finished product in the lower mold, effectively avoiding the situation in which the spring elastic force in the traditional device is insufficient to eject the finished product, and improving the production efficiency of the device.

[0020] (2) In this solution, a buffer spring is provided between the push rod and the fixed cylinder so that a certain buffer distance exists when the push rod pushes the push block upward, which can effectively prevent the device from exerting too much force when ejecting the finished product and affecting the quality of the finished product. After the push block rises from the through hole, the finished product can be ejected from the inner cavity of the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is the front view of the utility model;

[0023] Figure 3 This is a front cross-sectional structural diagram of the bottom plate and push plate of the utility model;

[0024] Figure 4 This is a front cross-sectional structural diagram of the lower mold and the fixed cylinder in the utility model.

[0025] Description of the numbers in the figure:

[0026] 1. Base; 2. Top plate; 3. Column; 4. Bottom plate; 5. Push plate; 6. Motor; 7. Bevel gear No. 1; 8. Rotating rod; 9. Bevel gear No. 2; 10. Screw; 11. Fixed sleeve rod; 12. Guide telescopic rod; 13. Lower mold; 131. Through hole; 14. Fixed cylinder; 15. Buffer spring; 16. Push rod; 17. Push block; 18. Upper mold; 19. Hydraulic cylinder. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0030] Example:

[0031] See also Figure 1 - Figure 4 An injection mold ejection structure includes a base 1 and a top plate 2. Four columns 3 are fixedly connected between the base 1 and the top plate 2. A lower mold 13 is fixedly arranged between the base 1 and the top plate 2. An upper mold 18 is fixedly arranged between the base 1 and the top plate 2. The top surface of the base 1 is fixedly connected to a bottom plate 4. A push plate 5 is arranged on the top of the bottom plate 4. The push plate 5 is arranged between the bottom plate 4 and the lower mold 13. A motor 6 is fixedly connected to one side of the push plate 5. The internal rotation of the push plate 5 is connected to a rotating rod 8. The rotating rod 8 One end passes through one side of the inner wall of the push plate 5 and is transmission connected to the output end of the motor 6. The outside of the rotating rod 8 is fixedly connected to two No. 1 bevel gears 7, and the outsides of the two No. 1 bevel gears 7 are meshed with No. 2 bevel gears 9. The top surface of the bottom plate 4 is fixedly connected to two fixed sleeve rods 11, and the interiors of the two fixed sleeve rods 11 are threadedly connected with screws 10. The tops of the two screws 10 are both rotatably connected to the bottom surface of the push plate 5, and the tops of the two screws 10 are respectively fixedly connected to the bottoms of the two No. 2 bevel gears 9.

[0032] In this solution, the motor 6 drives the rotating rod 8 to rotate, thereby driving the second bevel gear 9 to rotate through the first bevel gear 7. At this time, the screw 10 rotates with the second bevel gear 9 and rises from the fixed sleeve rod 11 to drive the push plate 5 to rise.

[0033] See also Figure 1 - Figure 3 The top surface of the bottom plate 4 is fixedly connected with four guide telescopic rods 12 , and the tops of the four guide telescopic rods 12 are fixedly connected with the bottom surface of the push plate 5 .

[0034] In this solution, the guide telescopic rod 12 is used to guide the lifting and lowering of the push plate 5 to ensure that it will not deviate during the lifting process, and also plays a role in auxiliary support of the push plate 5.

[0035] See also Figure 1 - Figure 4 The top surface of the push plate 5 is fixedly connected with four evenly distributed fixed cylinders 14 , and the interiors of the four fixed cylinders 14 are all slidably connected with push rods 16 .

[0036] Specifically, a buffer spring 15 is fixedly provided between the fixed cylinder 14 and the push rod 16 , and a push block 17 is fixedly connected to the top of each of the four push rods 16 .

[0037] Specifically, four evenly distributed through holes 131 are defined on the bottom surface of the inner wall of the lower mold 13 , and the four push blocks 17 are slidably connected to the inside of the four through holes 131 .

[0038] In this solution, when the push plate 5 rises, the fixed cylinder 14, the push rod 16 and the push block 17 also rise together. By setting the buffer spring 15, the push rod 16 has a certain buffer distance in the process of pushing the push block 17 to rise, which can effectively prevent the device from using too much force when ejecting the finished product and affecting the quality of the finished product. After the push block 17 rises from the through hole 131, the finished product can be ejected from the inner cavity of the lower mold 13.

[0039] See also Figure 1 and Figure 2 The upper mold 18 is slidably connected to the four columns 3, and the lower mold 13 is fixedly connected to the four columns 3.

[0040] Specifically, a hydraulic cylinder 19 is fixedly connected to the top of the top plate 2 , and a telescopic end of the hydraulic cylinder 19 passes through the top surface of the top plate 2 and is fixedly connected to the top surface of the upper mold 18 .

[0041] In this solution, the hydraulic cylinder 19 pushes the upper mold 18 downward, so that the upper mold 18 and the lower mold 13 are connected and the raw material is injected.

[0042] Working principle: First, when the finished product needs to be ejected from the lower mold 13, the staff turns on the motor 6 to drive the rotating rod 8 to rotate, thereby driving the No. 2 bevel gear 9 to rotate through the No. 1 bevel gear 7. At this time, the screw 10 rotates with the No. 2 bevel gear 9 and rises from the fixed sleeve 11, thereby driving the push plate 5 to rise. When the push plate 5 rises, the fixed cylinder 14, the push rod 16 and the push block 17 also rise together. Through the provided buffer spring 15, there is a certain buffer distance in the process of the push rod 16 pushing the push block 17 to rise, which can effectively prevent the device from using too much force when ejecting the finished product and affecting the quality of the finished product. After the push block 17 rises from the through hole 131, the finished product can be ejected from the inner cavity of the lower mold 13. Finally, the staff can take away the ejected finished product.

[0043] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An injection mold ejection structure, comprising a base (1) and a top plate (2), four columns (3) fixedly connected between the base (1) and the top plate (2), a lower mold (13) fixedly arranged between the base (1) and the top plate (2), an upper mold (18) fixedly arranged between the base (1) and the top plate (2), a top surface of the base (1) fixedly connected to a bottom plate (4), a push plate (5) arranged on the top of the bottom plate (4), the push plate (5) arranged between the bottom plate (4) and the lower mold (13), a motor (6) fixedly connected to one side of the push plate (5), and a rotating rod (8) rotatably connected to the inside of the push plate (5). ), one end of the rotating rod (8) passes through one side of the inner wall of the push plate (5) and is transmission-connected to the output end of the motor (6); the outside of the rotating rod (8) is fixedly connected to two No. 1 bevel gears (7); the outsides of the two No. 1 bevel gears (7) are meshed with No. 2 bevel gears (9); the top surface of the bottom plate (4) is fixedly connected to two fixed sleeve rods (11); the insides of the two fixed sleeve rods (11) are threadedly connected to screw rods (10); the tops of the two screw rods (10) are rotationally connected to the bottom surface of the push plate (5), and the tops of the two screw rods (10) are fixedly connected to the bottoms of the two No. 2 bevel gears (9) respectively.

2. The injection mold ejection structure according to claim 1, characterized in that: Four guide telescopic rods (12) are fixedly connected to the top surface of the bottom plate (4), and the tops of the four guide telescopic rods (12) are fixedly connected to the bottom surface of the push plate (5).

3. The injection mold ejection structure according to claim 1, characterized in that: Four evenly distributed fixed cylinders (14) are fixedly connected to the top surface of the push plate (5), and push rods (16) are slidably connected inside the four fixed cylinders (14).

4. The injection mold ejection structure according to claim 3, characterized in that: A buffer spring (15) is fixedly arranged between the fixed cylinder (14) and the push rod (16), and the tops of the four push rods (16) are all fixedly connected with push blocks (17).

5. The injection mold ejection structure according to claim 4, characterized in that: The bottom surface of the inner wall of the lower mold (13) is provided with four evenly distributed through holes (131), and the four push blocks (17) are respectively slidably connected to the inside of the four through holes (131).

6. The injection mold ejection structure according to claim 1, characterized in that: The upper mold (18) is slidably connected to the four columns (3), and the lower mold (13) is fixedly connected to the four columns (3).

7. The injection mold ejection structure according to claim 1, characterized in that: The top of the top plate (2) is fixedly connected to a hydraulic cylinder (19), and the telescopic end of the hydraulic cylinder (19) passes through the top surface of the top plate (2) and is fixedly connected to the top surface of the upper mold (18).

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