Thick-wall bottle cap injection mold ejector sleeve water conveying cooling mechanism

Abstract

The utility model discloses an ejector sleeve water conveying cooling mechanism of a thick-wall bottle cap injection mold. Comprising a rear mold fixing plate, an ejector sleeve fixing plate, a rear mold plate, a front mold plate, an ejector sleeve, a first ejector sleeve needle, a second ejector sleeve needle, a third ejector sleeve needle, a front mold insert, a thick-wall bottle cap, a front mold insert fixing plate, an ejector sleeve needle fixing plate, a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, a fifth sealing ring, a sixth sealing ring and a seventh sealing ring, the rapid cooling effect after injection molding of the bottle cap with the large wall thickness is achieved through the method of combining ejector sleeve pin side wall hole water conveying and copper insert cooling, the molding cooling time of a thick-wall product can be effectively shortened, therefore, the injection molding period of the thick-wall product is shortened, and the injection molding production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a cooling mechanism for injection molds, and more particularly to a water-cooling mechanism for the ejector sleeve of a thick-walled bottle cap injection mold. By combining the water-cooling mechanism inside the ejector sleeve with the excellent heat transfer properties of copper, the high-temperature rubber material after injection molding of thick-walled bottle caps can be rapidly cooled, which can effectively shorten the cooling time of the injection molding production cycle and improve the injection molding production efficiency of thick-walled bottle caps. Background Technology

[0002] Bottle caps are often used in conjunction with bottle bodies for sealing and storing medical consumables and reagents. When bottle caps and other products have thick walls, a long time is required to cool the molten rubber material during injection molding to bring the product to a temperature where it can be removed. Due to their structural characteristics, thick-walled bottle caps require a sleeve mechanism for injection molding. Traditional injection mold sleeve mechanisms do not have internal cooling structures such as water channels, making it impossible to achieve rapid cooling and molding of the side walls of thick-walled bottle caps. Utility Model Content

[0003] This utility model addresses the aforementioned technical challenges by providing a water-cooling mechanism for the ejector sleeve of a thick-walled bottle cap injection mold. The mechanism includes a rear mold fixing plate, an ejector sleeve fixing plate, a rear template, a front template, an ejector sleeve, a first ejector pin, a second ejector pin, a third ejector pin, a front mold insert, a thick-walled bottle cap, a front mold insert fixing plate, an ejector pin fixing plate, a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, a fifth sealing ring, a sixth sealing ring, a seventh sealing ring, an eighth sealing ring, and a ninth sealing ring. The rear mold fixing plate has a transversely penetrating water-cooling hole. The second ejector pin is fixedly installed in a circular hole of the same size on the rear mold fixing plate. The ejector pin fixing plate presses and fixes the second ejector pin to the rear mold fixing plate. The second ejector pin has a through-hole for water distribution, which aligns with the water distribution hole on the rear mold fixing plate. Below the water distribution hole on the second ejector pin is a groove for installing the first sealing ring. Above the water distribution hole on the rear mold fixing plate is a groove for installing the second sealing ring. The ejector sleeve is fixedly installed in a cylindrical hole of the same size on the ejector sleeve fixing plate. The ejector sleeve is also fitted into a cylindrical hole of the same shape on the rear template. The front and rear templates are fitted together flush. The front mold insert fixing plate presses the front mold insert tightly into a stepped cylindrical hole of the same shape on the front template. The front template has a transversely through-hole for water distribution, and the front mold insert has an annular water distribution hole corresponding to the water distribution hole on the front template. The front mold insert has annular grooves for installing the ninth and eighth sealing rings, located above and below the water channel. The top of the ejector sleeve fits into a cylindrical hole of the same size on the front mold insert. The top of the first ejector pin fits into a cylindrical hole of the same size on the ejector sleeve. The bottom of the first ejector pin fits into a cylindrical hole of the same size on the top of the second ejector pin. Annular grooves for installing the fifth and sixth sealing rings are provided on the outer circumference of the bottom of the first ejector pin. The diameter of the inner circumference hole at the bottom of the ejector sleeve is the same as the outer circumference diameter of the second ejector pin. The top of the second ejector pin fits into the inner circumference hole of the ejector sleeve. The diameter of the blind hole at the bottom of the first ejector pin is the same as the outer circumference diameter of the third ejector pin. The inner diameter of the second ejector pin is the same as the outer diameter of the third ejector pin. The top of the third ejector pin is fitted into the first ejector pin, and the third ejector pin is installed through the second ejector pin. The top of the third ejector pin has an annular water channel. Above the water channel at the top of the third ejector pin, there is an annular groove for installing the seventh sealing ring. The bottom of the third ejector pin has an annular groove for installing the third and fourth sealing rings. The left and right sides of the middle of the third ejector pin have grooves for water transportation. The first ejector pin and the front mold insert are made of copper, which has excellent thermal conductivity. The outer wall of the thick-walled bottle cap after injection molding contacts the inner circle of the front mold insert, and the inner wall of the thick-walled bottle cap after injection molding contacts the outer circle of the top of the first ejector pin.

[0004] The beneficial effects of this utility model are as follows: The water cooling mechanism of the ejector sleeve of the thick-walled bottle cap injection mold achieves rapid cooling of the molten rubber after the thick-walled bottle cap is injection molded by combining water cooling inside the ejector sleeve with thermal conduction cooling of copper inserts, thereby shortening the cooling time of the thick-walled bottle cap, shortening the injection molding production cycle, and thus improving production efficiency. Attached Figure Description

[0005] Figure 1 A schematic diagram of the overall structure of the water cooling mechanism for the ejector sleeve of a thick-walled bottle cap injection mold.

[0006] Figure 2 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0007] Figure 3 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0008] Figure 4 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0009] Figure 5 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0010] Figure 6 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0011] Figure 7 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0012] Figure 8 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0013] Figure 9 A partial structural diagram of the water cooling mechanism of the ejector sleeve in a thick-walled bottle cap injection mold.

[0014] Figure 10 This is a schematic diagram of a thick-walled bottle cap structure.

[0015] The components are: 1. Rear mold fixing plate; 2. Sleeve fixing plate; 3. Rear template; 4. Front template; 5. Sleeve; 6. First sleeve ejector pin; 7. Second sleeve ejector pin; 8. Third sleeve ejector pin; 9. Front mold insert; 10. Thick-walled bottle cap; 11. Front mold insert fixing plate; 12. Sleeve ejector pin fixing plate; 13. First sealing ring; 14. Second sealing ring; 15. Third sealing ring; 16. Fourth sealing ring; 17. Fifth sealing ring; 18. Sixth sealing ring; 19. Seventh sealing ring; 20. Eighth sealing ring; 21. Ninth sealing ring. Detailed Implementation

[0016] As attached Figures 1-10 As shown, a water cooling mechanism for a thick-walled bottle cap injection mold includes a rear mold fixing plate 1, a bottle cap fixing plate 2, a rear template 3, a front template 4, a bottle cap 5, a first bottle cap pin 6, a second bottle cap pin 7, a third bottle cap pin 8, a front mold insert 9, a thick-walled bottle cap 10, a front mold insert fixing plate 11, a bottle cap pin fixing plate 12, a first sealing ring 13, a second sealing ring 14, a third sealing ring 15, a fourth sealing ring 16, a fifth sealing ring 17, a sixth sealing ring 18, a seventh sealing ring 19, an eighth sealing ring 20, and a ninth sealing ring 21.

[0017] As attached Figures 1-9 The thick-walled bottle cap 10 shown is in a high-temperature molten state after injection molding. Cooling water flows through the water channel hole on the left side of the rear mold fixing plate 1, through the water channel hole at the bottom of the second ejector pin 7, into the water channel on the left side of the third ejector pin 8, and then flows upward through the annular water channel at its top into the water channel on the right side of the third ejector pin 8, and downward through the water channel hole on the right side of the bottom of the second ejector pin 7. During the flow of cooling water, the heat of the inner wall of the thick-walled bottle cap 10 is carried away by the copper first ejector pin 6, and the temperature of the inner wall of the thick-walled bottle cap 10 drops rapidly. The cooling water flow path and flow direction of the cooling mechanism are shown in the attached figure. Figure 4 As shown by the dashed line and arrow; simultaneously, cooling water flows through the water channel on the left side of the front mold plate 4, through the annular water channel on the front mold insert 9, and then out through the water channel on the right side of the front mold plate 4. During the flow of cooling water, the heat of the outer wall of the thick-walled bottle cap 10 is carried away by the copper front mold insert 9, and the temperature of the outer wall of the thick-walled bottle cap 10 drops rapidly. The cooling water flow path and direction of the cooling mechanism are shown in the attached figure. Figure 3 As shown by the dashed line and arrow, the thicker sidewall of the thick-walled bottle cap 10 can be cooled down to a temperature where the product can be removed after solidification by water cooling. During this process, the cooling water circulation route of the water cooling mechanism of the thick-walled bottle cap 10 is through the first sealing ring 13, the second sealing ring 14, the third sealing ring 15, the fourth sealing ring 16, the fifth sealing ring 17, the sixth sealing ring 18, the seventh sealing ring 19, the eighth sealing ring 20, and the ninth sealing ring 21 to ensure the sealing of the cooling water and prevent leakage during the flow of cooling water, which could damage the injection mold and the product.

[0018] A water-cooling mechanism for a thick-walled bottle cap injection mold sleeve achieves rapid cooling of the thick-walled portion of the bottle cap by combining water transportation inside the sleeve with rapid heat conduction from copper parts, thereby shortening the cooling time and improving the injection molding production efficiency of the thick-walled bottle cap product.

[0019] The above description is a preferred embodiment of the present utility model and is intended to illustrate the content and concept of the present utility model. The content of this specification should not be construed as a limitation of the present utility model.

Claims

1. A water cooling mechanism for a thick-walled bottle cap injection mold, comprising a rear mold fixing plate (1), a bottle cap fixing plate (2), a rear template (3), a front template (4), a bottle cap (5), a first bottle cap pin (6), a second bottle cap pin (7), a third bottle cap pin (8), a front mold insert (9), a thick-walled bottle cap (10), a front mold insert fixing plate (11), a bottle cap pin fixing plate (12), a first sealing ring (13), a second sealing ring (14), a third sealing ring (15), a fourth sealing ring (16), a fifth sealing ring (17), a sixth sealing ring (18), a seventh sealing ring (19), an eighth sealing ring (20), and a ninth sealing ring (21), characterized in that, The rear mold fixing plate (1) has a transverse through-hole for water supply. The second ejector pin (7) is fixedly installed in a circular hole of the same size on the rear mold fixing plate (1). The ejector pin fixing plate (12) presses and fixes the second ejector pin (7) on the rear mold fixing plate (1). The second ejector pin (7) has a through-hole for water supply that is in the same position as the water supply hole on the rear mold fixing plate (1). A groove for installing the first sealing ring (13) is opened below the water supply hole of the second ejector pin (7). A groove for installing the second sealing ring (14) is opened above the water supply hole of the rear mold fixing plate (1). The ejector sleeve (5) is fixedly installed in a cylindrical hole of the same size on the ejector sleeve fixing plate (2). The ejector sleeve (5) is fitted and installed on the rear template ( 3) The front template (4) and the rear template (3) are fitted together and flush. The front mold insert fixing plate (11) presses the front mold insert (9) into the stepped cylindrical hole on the front template (4) that matches its shape. The front template (4) has a transverse water channel hole. The front mold insert (9) has an annular water channel corresponding to the water channel hole of the front template (4). The upper and lower parts of the water channel on the front mold insert (9) are respectively provided with annular grooves for installing the ninth sealing ring (21) and the eighth sealing ring (20). The top of the ejector sleeve (5) is fitted into the cylindrical hole on the front mold insert (9) that matches its size. The top of the first ejector needle (6) is fitted into the ejector sleeve. The bottom end of the first ejector pin (6) is fitted into the cylindrical hole of the second ejector pin (7) with the same size as the cylindrical hole on the cylinder (5). The outer circle of the bottom end of the first ejector pin (6) is provided with an annular groove for installing the fifth sealing ring (17) and the sixth sealing ring (18). The diameter of the inner circle of the bottom part of the ejector pin (5) is the same as the outer circle diameter of the second ejector pin (7). The top part of the second ejector pin (7) is fitted into the inner circle of the ejector pin (5). The diameter of the blind hole at the bottom of the first ejector pin (6) is the same as the outer circle diameter of the third ejector pin (8). The diameter of the inner circle of the second ejector pin (7) is the same as the outer circle diameter of the third ejector pin (8). The top part of the third ejector pin (8) is fitted into the inner circle of the first ejector pin (6). The third ejector pin (8) is installed inside the second ejector pin (7). The top of the third ejector pin (8) is provided with an annular water channel. Above the water channel at the top of the third ejector pin (8) is an annular groove for installing the seventh sealing ring (19). The bottom of the third ejector pin (8) is provided with an annular groove for installing the third sealing ring (15) and the fourth sealing ring (16). The left and right sides of the middle of the third ejector pin (8) are machined with grooves for water transportation. The first ejector pin (6) and the front mold insert (9) are made of copper and have excellent thermal conductivity. The outer side wall of the thick-walled bottle cap (10) after injection molding contacts the inner circle of the front mold insert (9). The inner side wall of the thick-walled bottle cap (10) after injection molding contacts the top outer circle of the first ejector pin (6).

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