Injection molding apparatus for cosmetic package container production

Abstract

The utility model discloses a kind of injection molding equipment for cosmetic packaging container preparation, including movable mould and fixed mould, lifting plate is installed between the bottom of movable mould and fixed mould, the middle part of lifting plate is installed with bearing plate above, the bearing plate can rotate, the middle part of one end of lifting plate is installed with buffer plate, after injection molding is finished, control movable mould moves and will drive the lifting plate to rise, injection molding product will fall on bearing plate, for the bearing of injection molding product, prevent injection molding product from falling at high place and damage, control movable mould is close to fixed mould, under the connection of two first connecting rods on movable mould and fixed mould will drive lifting plate to descend, and will drive bearing plate to rotate, injection molding product on bearing plate will fall on buffer plate along the inclination angle of bearing plate, can guide and receive injection molding product falling from bearing plate, can control injection molding product to be conveyed to specified position, facilitate the collection of injection molding product.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to an injection molding device for preparing cosmetic packaging containers. Background Technology

[0002] In the manufacturing of cosmetic packaging containers, injection molding is often used. The raw materials for injection molding include PET, PP, and HDPE. When producing thin-walled cosmetic packaging containers, such as those made of PP / HDPE, during the demolding process, the cosmetic packaging containers may fall directly from the injection mold. This can cause collisions between the cosmetic packaging containers, affecting the processing quality. Utility Model Content

[0003] The purpose of this invention is to provide an injection molding device for preparing cosmetic packaging containers, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an injection molding device for preparing cosmetic packaging containers, comprising a moving mold and a fixed mold, wherein a lifting plate is installed between the bottom of the moving mold and the fixed mold, a bearing plate is installed above the middle of the lifting plate, the bearing plate is rotatable, and a buffer plate is installed at the middle of one end of the lifting plate.

[0005] As a further preferred embodiment of this technical solution, a first connecting rod is rotatably mounted on the bottom of one end of both the moving mold and the fixed mold via a shaft pin, and the end of the first connecting rod away from the moving mold or the fixed mold is rotatably connected to the end of the lifting plate via a shaft pin.

[0006] As a further preferred embodiment of this technical solution, a second connecting rod is rotatably mounted on one end of the fixed mold via a pivot pin. The end of the second connecting rod away from the fixed mold is rotatably connected to one end of the lifting plate via a pivot pin. The two ends of the second connecting rod and the two ends of the first connecting rod mounted on the fixed mold are arranged in a parallelogram.

[0007] As a further preferred embodiment of this technical solution, a fixing block is symmetrically fixedly installed in the middle of the lifting plate, and a rotating shaft is fixedly installed at one end of the bearing plate. The rotating shaft is rotatably installed between the tops of the two fixing blocks. Torsion springs are sleeved on the outer sides of both ends of the rotating shaft. One end of the torsion spring is fixedly connected to the end of the rotating shaft, and the other end of the torsion spring is fixedly connected to one side of the fixing block.

[0008] As a further preferred embodiment of this technical solution, a pressure rod is symmetrically mounted on the bottom end of the moving mold via a pivot pin. A buffer hole is provided at the bottom end of the pressure rod. A fixing rod is symmetrically fixed on the end of the bearing plate away from the rotating shaft. The fixing rod is located inside the buffer hole. When the moving mold and the fixed mold are in a state of being far apart, the fixing rod is located at the end of the buffer hole away from the moving mold.

[0009] As a further preferred embodiment of this technical solution, a third connecting rod is symmetrically mounted on both sides of the buffer plate via pivot pins. A plug rod is slidably mounted on the end of the third connecting rod away from the buffer plate. A return spring is sleeved on the outer side of one end of the plug rod. One end of the return spring is fixedly connected to the end of the plug rod, and the other end of the return spring is fixedly connected to one side of the third connecting rod. Insertion holes are equally spaced on both sides of the inner wall of the lifting plate, and the insertion holes are slidably inserted into the plug rod.

[0010] As a further preferred embodiment of this technical solution, a storage groove is provided in the middle of the upper surface of the support plate, and a sponge is laid on the support plate at the bottom position corresponding to the storage groove.

[0011] This utility model provides an injection molding device for preparing cosmetic packaging containers, which has the following beneficial effects:

[0012] (1) This utility model uses a screw extruder to deliver molten material to a fixed mold and uses a moving mold and a fixed mold to perform injection molding. After injection molding is completed, the moving mold is controlled to move. The moving mold and the fixed mold move away from each other, which will drive the two first connecting rods installed on the moving mold and the fixed mold to pull the lifting plate. This will drive the lifting plate to rise and control the lifting plate to move between the bottom of the moving mold and the fixed mold. Then, the demolding mechanism on the moving mold will push the injection molded product out of the outside of the moving mold. The injection molded product will fall onto the bearing plate to support the injection molded product and prevent the injection molded product from falling from a height and being damaged.

[0013] (2) By controlling the moving mold to approach the fixed mold, the two first connecting rods on the moving mold and the fixed mold will drive the lifting plate to descend and drive the bearing plate to rotate. The injection molded products on the bearing plate will fall onto the buffer plate along the tilt angle of the bearing plate. The injection molded products falling from the bearing plate can be guided and received. The injection molded products can be controlled to be transported to the designated position, which is convenient for collecting the injection molded products. Attached Figure Description

[0014] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0015] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of a partial explosion structure of the present invention;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0018] In the diagram: 1. Moving mold; 2. Fixed mold; 3. Lifting plate; 4. Bearing plate; 5. Buffer plate; 6. First connecting rod; 7. Second connecting rod; 8. Fixing block; 9. Rotating shaft; 10. Torsion spring; 11. Pressure rod; 12. Buffer hole; 13. Fixing rod; 14. Third connecting rod; 15. Insert rod; 16. Return spring; 17. Insertion hole; 18. Storage groove; 19. Sponge. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This utility model provides a technical solution: such as Figures 1 to 4 As shown in this embodiment, an injection molding device for preparing a cosmetic packaging container includes a moving mold 1 and a fixed mold 2. A lifting plate 3 is installed between the bottoms of the moving mold 1 and the fixed mold 2. A bearing plate 4 is installed above the middle of the lifting plate 3. The bearing plate 4 is rotatable. A buffer plate 5 is installed at the middle of one end of the lifting plate 3. A first connecting rod 6 is rotatably installed at the bottom of one end of both the moving mold 1 and the fixed mold 2 via a pivot pin. The end of the first connecting rod 6 away from the moving mold 1 or the fixed mold 2 is rotatably connected to the end of the lifting plate 3 via a pivot pin. Molten material is fed into the fixed mold 2 through a screw extruder, and injection molding is performed by using the moving mold 1 and the fixed mold 2. After injection molding is completed, the moving mold 1 is controlled to move. The mutual movement of the moving mold 1 and the fixed mold 2 will drive the components installed on the moving mold 1 and the fixed mold 2 to move away from each other. The two first connecting rods 6 on mold 2 pull the lifting plate 3, which will cause the lifting plate 3 to rise and control the lifting plate 3 to move between the bottom of the moving mold 1 and the fixed mold 2. Then, the demolding mechanism on the moving mold 1 will push the injection molded product out of the outside of the moving mold 1. The injection molded product will fall onto the support plate 4, which is used to support the injection molded product and prevent the injection molded product from falling from a height and getting damaged. Then, the moving mold 1 is controlled to move closer to the fixed mold 2. Under the connection of the two first connecting rods 6 on the moving mold 1 and the fixed mold 2, the lifting plate 3 will be driven to descend and drive the support plate 4 to rotate. The injection molded product on the support plate 4 will fall onto the buffer plate 5 along the tilt angle of the support plate 4. The buffer plate 5 can guide and receive the injection molded product falling from the support plate 4 and can control the injection molded product to be transported to a designated position for easy collection of the injection molded product.

[0021] like Figures 1 to 4As shown, a second connecting rod 7 is rotatably mounted on one end of the fixed mold 2 via a shaft pin. The end of the second connecting rod 7 away from the fixed mold 2 is rotatably connected to one end of the lifting plate 3 via a shaft pin. The two ends of the second connecting rod 7 are arranged in a parallelogram with the two ends of the first connecting rod 6 mounted on the fixed mold 2.

[0022] During the movement of the moving mold 1, under the positioning of the lifting plate 3 by the second connecting rod 7, since the second connecting rod 7 and the first connecting rod 6 on the fixed mold 2 form a parallelogram mechanism with the fixed mold 2 and the lifting plate 3, the lifting plate 3 will always be kept horizontal.

[0023] like Figures 1 to 4 As shown, a fixing block 8 is symmetrically fixedly installed in the middle of the lifting plate 3. A rotating shaft 9 is fixedly installed at one end of the bearing plate 4. The rotating shaft 9 is rotatably installed between the tops of the two fixing blocks 8. Torsion springs 10 are sleeved on the outer sides of both ends of the rotating shaft 9. One end of the torsion spring 10 is fixedly connected to the end of the rotating shaft 9, and the other end of the torsion spring 10 is fixedly connected to one side of the fixing block 8. A pressure rod 11 is symmetrically rotatably installed at the bottom end of the moving mold 1 through a shaft pin. A buffer hole 12 is opened at the bottom end of the pressure rod 11. A fixing rod 13 is symmetrically fixedly installed at the end of the bearing plate 4 away from the rotating shaft 9. The fixing rod 13 is located inside the buffer hole 12. When the moving mold 1 and the fixed mold 2 are in a state of being far apart, the fixing rod 13 is located at the end of the buffer hole 12 away from the moving mold 1.

[0024] When the moving mold 1 and the fixed mold 2 move closer to each other, the buffer hole 12 on the pressure rod 11 will slide on the outside of the fixed rod 13. The top of the buffer hole 12 on the pressure rod 11 will press down on the fixed rod 13 during the final movement of the moving mold 1, which will drive the bearing plate 4 to rotate.

[0025] like Figures 1 to 4 As shown, a third connecting rod 14 is symmetrically mounted on both sides of the buffer plate 5 via pivot pins. A plug rod 15 is slidably mounted on the end of the third connecting rod 14 away from the buffer plate 5. A return spring 16 is sleeved on the outer side of one end of the plug rod 15. One end of the return spring 16 is fixedly connected to the end of the plug rod 15, and the other end of the return spring 16 is fixedly connected to one side of the third connecting rod 14. Insertion holes 17 are equidistantly opened on both sides of the inner wall of the lifting plate 3. The insertion holes 17 are slidably inserted into the plug rod 15.

[0026] When adjusting the rotation angle of the buffer plate 5, pull the insertion rod 15 to slide the insertion rod 15 out of the insertion hole 17 at a certain position. At this time, the return spring 16 is in the extended state. Then rotate the third connecting rod 14 and the buffer plate 5, and align the end of the third connecting rod 14 with the insertion hole 17 at another position. The insertion rod 15 can be inserted into the insertion hole 17 at another position to fix the position of the buffer plate 5.

[0027] like Figures 1 to 4 As shown, a storage groove 18 is provided in the middle of the upper surface of the support plate 4, and a sponge 19 is laid on the support plate 4 at the bottom position corresponding to the storage groove 18.

[0028] The storage slot 18 can limit the falling injection molded product, and the sponge 19 can cushion the injection molded product for protection.

[0029] This utility model provides an injection molding device for preparing cosmetic packaging containers, the specific working principle of which is as follows:

[0030] During operation, the device feeds molten material into the fixed mold 2 via a screw extruder, and injection molding is performed using the moving mold 1 and the fixed mold 2. After injection molding, the moving mold 1 is moved. The movement of the moving mold 1 and the fixed mold 2 away from each other causes the two first connecting rods 6 mounted on the moving mold 1 and the fixed mold 2 to pull the lifting plate 3, causing the lifting plate 3 to rise. The lifting plate 3 is then moved to the bottom between the moving mold 1 and the fixed mold 2. Simultaneously, the second connecting rod 7 positions the lifting plate 3. Since the second connecting rod 7 and the first connecting rod 6 on the fixed mold 2 form a parallelogram mechanism with the fixed mold 2 and the lifting plate 3, the lifting plate 3 remains horizontal. During this process, because the moving mold 1 and the fixed mold 2 move away from each other, the buffer hole 12 on the pressure rod 11 will slide outside the fixed rod 13, and the pressure rod 11 will not press down on the fixed rod 13. Finally, the demolding mechanism on the moving mold 1 ejects the injection molded product from the outside of the moving mold 1, and the injection molded product falls out. The support plate 4 is used to support the injection molded products and prevent them from falling from a height and getting damaged. Then, the moving mold 1 is controlled to move closer to the fixed mold 2. Under the connection of the two first connecting rods 6 on the moving mold 1 and the fixed mold 2, the lifting plate 3 will be driven to descend. Similarly, since the second connecting rod 7 on the fixed mold 2 and the first connecting rod 6 form a parallelogram mechanism with the fixed mold 2 and the lifting plate 3, the lifting plate 3 will always be kept horizontal. During this process, since the moving mold 1 and the fixed mold 2 are close to each other, the buffer hole 12 on the pressure rod 11 will slide on the outside of the fixed rod 13. The top of the buffer hole 12 on the pressure rod 11 will press down on the fixed rod 13 during the final movement of the moving mold 1, which will drive the support plate 4 to rotate. The injection molded products on the support plate 4 will fall onto the buffer plate 5 along the tilt angle of the support plate 4. The injection molded products falling from the support plate 4 can be guided and caught. The injection molded products can be controlled to be transported to a designated position, which is convenient for the collection of injection molded products.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection molding device for preparing cosmetic packaging containers, comprising a moving mold (1) and a fixed mold (2), characterized in that: A lifting plate (3) is installed between the bottom of the moving mold (1) and the fixed mold (2). A bearing plate (4) is installed above the middle part of the lifting plate (3). The bearing plate (4) is rotatable. A buffer plate (5) is installed at the middle of one end of the lifting plate (3).

2. The injection molding equipment for preparing cosmetic packaging containers according to claim 1, characterized in that: The bottom of one end of both the moving mold (1) and the fixed mold (2) is rotatably mounted with a first connecting rod (6) via a shaft pin. The end of the first connecting rod (6) away from the moving mold (1) or the fixed mold (2) is rotatably connected to the end of the lifting plate (3) via a shaft pin.

3. The injection molding equipment for preparing cosmetic packaging containers according to claim 2, characterized in that: A second connecting rod (7) is rotatably mounted on one end of the fixed mold (2) via a shaft pin. The end of the second connecting rod (7) away from the fixed mold (2) is rotatably connected to one end of the lifting plate (3) via a shaft pin. The two ends of the second connecting rod (7) are arranged in a parallelogram with the two ends of the first connecting rod (6) mounted on the fixed mold (2).

4. The injection molding equipment for preparing cosmetic packaging containers according to claim 3, characterized in that: A fixing block (8) is symmetrically fixedly installed in the middle of the lifting plate (3). A rotating shaft (9) is fixedly installed at one end of the bearing plate (4). The rotating shaft (9) is rotatably installed between the tops of the two fixing blocks (8). Torque springs (10) are sleeved on the outer sides of both ends of the rotating shaft (9). One end of the torsion spring (10) is fixedly connected to the end of the rotating shaft (9), and the other end of the torsion spring (10) is fixedly connected to one side of the fixing block (8).

5. The injection molding equipment for preparing cosmetic packaging containers according to claim 4, characterized in that: The bottom end of the moving mold (1) is symmetrically mounted with a pressure rod (11) via a pivot pin. The bottom end of the pressure rod (11) is provided with a buffer hole (12). The end of the bearing plate (4) away from the rotating shaft (9) is symmetrically fixed with a fixing rod (13). The fixing rod (13) is located inside the buffer hole (12). When the moving mold (1) and the fixed mold (2) are in a state of being far apart, the fixing rod (13) is located at the end of the buffer hole (12) away from the moving mold (1).

6. The injection molding equipment for preparing cosmetic packaging containers according to claim 1, characterized in that: The buffer plate (5) is symmetrically mounted with a third connecting rod (14) on both sides via a pivot pin. The end of the third connecting rod (14) away from the buffer plate (5) is slidably mounted with a plug rod (15). A return spring (16) is sleeved on the outer side of one end of the plug rod (15). One end of the return spring (16) is fixedly connected to the end of the plug rod (15), and the other end of the return spring (16) is fixedly connected to one side of the third connecting rod (14). The inner walls on both sides of the lifting plate (3) are provided with equidistant insertion holes (17), and the insertion holes (17) are slidably inserted into the plug rod (15).

7. The injection molding equipment for preparing cosmetic packaging containers according to claim 5, characterized in that: A storage groove (18) is provided in the middle of the upper surface of the support plate (4), and a sponge (19) is laid on the bottom of the support plate (4) corresponding to the storage groove (18).

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