Rapid automatic locking device for high-water-pressure underwater pelletizing
By combining wedge-shaped locking blocks and hydraulic cylinders, the problem of unstable locking of underwater pelletizing devices under high water pressure is solved, achieving rapid automatic locking and ensuring the reliability and efficiency of pelletizing.
Patent Information
- Application Number
- CN202422639425.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing underwater pelletizing devices are prone to leakage and loosening under high water pressure conditions, and the locking device requires manual operation, resulting in incomplete pelletizing and pipe blockage, which cannot meet the high water pressure requirements of polymer foaming processes.
The design employs a combination of wedge-shaped locking blocks and hydraulic cylinders, achieving rapid and automatic locking under high water pressure through wedge-shaped inserting. The cooperation of locking grooves and locking rods ensures a firm connection between the pelletizing chamber and the mold.
It achieves a fast and reliable locking effect under high water pressure, avoiding incomplete pelletizing and pipe blockage, and improving the reliability and efficiency of pelletizing.
Smart Images
Figure CN223545511U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underwater pelletizing locking technology, specifically to a rapid automatic locking device for high-pressure underwater pelletizing. Background Technology
[0002] During underwater pelletizing, a secure connection and stable locking between the pelletizing chamber and the die are crucial for reliable pelletizing. Currently, most underwater pelletizing devices on the market operate under zero water pressure, and their pelletizing chamber locking devices are manually tightened, which is relatively slow. In this situation, material may still escape from the die head, easily leading to incomplete pelletizing, entanglement, and pipe blockage. Furthermore, most underwater pelletizing operations occur at atmospheric pressure or low water levels, where the locking requirements are not particularly stringent. Under the high water pressure conditions of polymer foaming processes, existing underwater pelletizing locking devices are prone to leakage and loosening.
[0003] Therefore, the present invention provides a rapid automatic locking device for high-pressure underwater pelletizing to solve the above-mentioned problems. Utility Model Content
[0004] The technical problem this invention aims to solve is as follows: During underwater pelletizing, it is necessary to ensure a firm connection and stable locking between the pelletizing chamber and the die to guarantee reliable pelletizing. Currently, most underwater pelletizing devices on the market operate under zero water pressure, and their pelletizing chamber locking devices are manually tightened, which is relatively slow. In this situation, material may still escape from the die head, easily leading to incomplete pelletizing, entanglement, and pipe blockage. Furthermore, most underwater pelletizing operates at atmospheric pressure or low water levels, so the locking requirements are not particularly stringent. Under the high water pressure conditions of polymer foaming processes, existing underwater pelletizing locking devices are prone to leakage and loosening.
[0005] This utility model provides the following technical solution: a fast automatic locking device for high water pressure underwater pelletizing, including a fixing device and a locking device. The fixing device is installed on the mold and is used to cooperate with the locking device to achieve fast locking under water pressure of up to 30 bar. The locking device is installed on the pelletizing chamber and is a hydraulic cylinder that uses a wedge-shaped cutting method to complete the locking.
[0006] Preferably, the fixing device includes a fixing bolt, a locking bar, and a locking groove. The fixing bolt passes through the locking bar and is installed on the mold. The locking bar is installed on the mold, and a locking groove is formed inside the locking bar.
[0007] Preferably, a position sensor is installed in the locking groove.
[0008] Preferably, the locking device includes an oil supply pipe, a drive cylinder, a telescopic slide rod, and a locking block. The oil supply pipe is mounted on the oil pump, and a drive cylinder is mounted on the other side of the oil supply pipe. A telescopic slide rod is mounted on the output end of the drive cylinder, and a locking block is mounted on the telescopic slide rod.
[0009] Preferably, the locking block is wedge-shaped, and the locking groove is a corresponding wedge-shaped groove.
[0010] Preferably, both the locking block and the locking rod are made of alloy steel with a Rockwell hardness of 50 or higher.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. This utility model involves installing a wedge-shaped locking block on one side of the pelletizing chamber and a locking rod with a corresponding oblique locking groove on one side of the die. After the pelletizing chamber and die are closed, the wedge-shaped locking block is moved upward by a hydraulic cylinder or by pushing, and locks with the locking rod through the locking groove. The wedge design makes the fastener tighter as it is pulled, thus achieving a firm lock. This avoids the relatively slow manual locking action, where material still emerges from the die head, easily causing incomplete pelletizing and leading to entanglement and blockage of the pipes. Attached Figure Description
[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0015] Figure 2 This is a schematic diagram of the fixing device of this utility model;
[0016] Figure 3 This is a schematic diagram of the locking device of this utility model.
[0017] In the diagram: 1. Fixing device; 11. Fixing bolt; 12. Locking bar; 13. Locking groove; 14. Position sensor; 2. Locking device; 21. Oil supply pipe; 22. Drive cylinder; 23. Telescopic slide bar; 24. Locking block. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.
[0021] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0022] This disclosure aims to address the need for a robust connection and secure locking between the pelletizing chamber and the die during underwater pelletizing to ensure reliable pelletizing. Currently, most commercially available underwater pelletizing devices operate at zero water pressure, and their pelletizing chamber locking devices are manually tightened, which is relatively slow. In this case, material may still escape from the die head, easily leading to incomplete pelletizing, entanglement, and pipe blockage. Furthermore, most underwater pelletizing operations are at normal or low water pressure, where locking requirements are not particularly stringent. Under the high water pressure conditions of polymer foaming processes, existing underwater pelletizing locking devices are prone to leakage and loosening. Therefore, this disclosure proposes a rapid automatic locking device for high-pressure underwater pelletizing, which involves installing a wedge-shaped locking block on one side of the pelletizing chamber and a locking rod with a corresponding oblique locking groove on one side of the die. After the pelletizing chamber and the die are closed, the wedge-shaped locking block is moved upward by a hydraulic cylinder or by pushing. It is locked in place by the locking groove and the locking rod. The wedge design makes the fastener tighter and tighter as it is pulled, thus achieving a firm lock. This avoids the situation where manual locking is relatively slow, and material will still come out of the die head, which can easily cause incomplete pelletizing, entanglement and blockage of the pipe.
[0023] like Figures 1 to 3 As shown, a high-pressure underwater pelletizing rapid automatic locking device includes a fixing device 1 and a locking device 2. The fixing device 1 is installed on the mold and is used to cooperate with the locking device 2 to achieve rapid locking under water pressure of up to 30 bar. The locking device 2 is installed on the pelletizing chamber and is a hydraulic cylinder that uses a wedge-shaped cutting method to complete the locking.
[0024] By installing a wedge-shaped locking block 24 on one side of the pelletizing chamber and a locking rod 12 with a corresponding oblique locking groove 13 on one side of the die, the wedge-shaped locking block 24 is moved upward by a hydraulic cylinder or by pushing, and is locked in place by the locking groove 13 and the locking rod 12. The wedge design makes the fastener tighter as it is pulled, thus achieving a firm lock. This avoids the relatively slow manual locking action, where material still emerges from the die head, which can easily cause incomplete pelletizing and lead to entanglement and blockage of the pipe.
[0025] like Figures 1 to 2 As shown, the fixing device 1 includes a fixing bolt 11, a locking rod 12, and a locking groove 13. The fixing bolt 11 passes through the locking rod 12 and is installed on the mold. The fixing bolt 11 is used to fix the locking rod 12 on the mold. The locking rod 12 is installed on the mold and is used to cooperate with the locking device 2 to complete quick locking. The locking rod 12 has a locking groove 13 inside, which is used to cooperate with the locking block 24 to complete quick locking.
[0026] like Figures 1 to 2 As shown, a position sensor 14 is installed in the locking groove 13; the position sensor 14 is used to detect whether the locking device is in place, thereby ensuring the reliability of the locking device.
[0027] like Figure 3 As shown, the locking device 2 includes an oil supply pipe 21, a drive cylinder 22, a telescopic slide bar 23, and a locking block 24. The oil supply pipe 21 is installed on the oil pump and is used to supply hydraulic oil to the drive cylinder 22. The drive cylinder 22 is installed on the other side of the oil supply pipe 21 and is used to extend and retract to drive the telescopic slide bar 23 to move. The telescopic slide bar 23 is installed at the output end of the drive cylinder 22 and is used to move to drive the locking block 24 to move. The locking block 24 is installed on the telescopic slide bar 23 and is used to move back and forth to complete the locking operation.
[0028] During operation, the operator drives the oil pump to deliver hydraulic oil to the drive cylinder 22. Under the pressure of the hydraulic oil, the drive cylinder 22 pushes the telescopic slide rod 23 forward, which in turn moves the locking block 24. After the locking block 24 moves, it is gradually inserted into the locking groove 13 to complete the locking operation.
[0029] The above-mentioned locking device can achieve rapid locking, and locking with water pressure up to 30 bar will not affect the locking efficiency and locking effect.
[0030] like Figures 1 to 3 As shown, the locking block 24 is wedge-shaped, and the locking groove 13 is a corresponding wedge-shaped groove. Setting the locking block 24 as a wedge is to increase the force on it as the locking device moves forward during locking, thereby achieving a firm lock.
[0031] like Figures 1 to 3 As shown, both the locking block 24 and the locking rod 12 are made of alloy steel with a Rockwell hardness of 50 or higher. The use of alloy steel with a Rockwell hardness of 50 or higher ensures strength and hardness, making it less prone to deformation, thereby further ensuring the locking effect underwater.
[0032] The overall working process is as follows: the operator drives the oil pump to deliver hydraulic oil to the drive cylinder 22 through the oil delivery system. Under the pressure of the hydraulic oil, the drive cylinder 22 pushes the telescopic slide bar 23 forward, which in turn causes the telescopic slide bar 23 to move and drive the locking block 24 to move. After the locking block 24 moves, it is gradually inserted into the locking groove 13 to complete the locking work.
[0033] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A rapid automatic locking device for high-pressure underwater pelletizing, characterized in that, It includes a fixing device (1) and a locking device (2). The fixing device (1) is installed on the mold and is used to cooperate with the locking device (2) to achieve rapid locking under water pressure of up to 30 bar. The locking device (2) is installed on the pelletizing chamber and is locked by means of a hydraulic cylinder and by means of wedge cutting.
2. The rapid automatic locking device for high-pressure underwater pelletizing according to claim 1, characterized in that: The fixing device (1) includes a fixing bolt (11), a locking bar (12) and a locking groove (13). The fixing bolt (11) passes through the locking bar (12) and is installed on the mold. The locking bar (12) is installed on the mold and a locking groove (13) is provided inside the locking bar (12).
3. The rapid automatic locking device for high-pressure underwater pelletizing according to claim 2, characterized in that: A position sensor (14) is installed in the locking groove (13).
4. The rapid automatic locking device for high-pressure underwater pelletizing according to claim 3, characterized in that: The locking device (2) includes an oil supply pipe (21), a drive cylinder (22), a telescopic slide bar (23), and a locking block (24). The oil supply pipe (21) is installed on the oil pump. The drive cylinder (22) is installed on the other side of the oil supply pipe (21). The telescopic slide bar (23) is installed at the output end of the drive cylinder (22). The locking block (24) is installed on the telescopic slide bar (23).
5. The rapid automatic locking device for high-pressure underwater pelletizing according to claim 4, characterized in that: The locking block (24) is wedge-shaped, and the locking groove (13) is a corresponding wedge-shaped groove.
6. The rapid automatic locking device for high-pressure underwater pelletizing according to claim 5, characterized in that: Both the locking block (24) and the locking rod (12) are made of alloy steel with a Rockwell hardness of 50 or higher.