A novel high-speed flying knife mechanism with cooling function

Abstract

The utility model relates to a novel high -speed fly -off cutter mechanism with cooling function, including mounting bracket, fly -off cutter body and cooling mechanism, the mounting bracket one side is connected with extruder through the connecting frame, the conveying pipe for the article delivery in extruder is opened in the mounting bracket, with extruder discharges material through the conveying pipe, because the conveying pipe is equipped with the reserved groove for fly -off cutter body cutting, and the drive is started to drive fly -off cutter body rotation, and the material is cut, and the material moves along with extruder and promotes, and fly -off cutter body heat is higher, and the refrigerating sheet is started, and the air pipe in frame body and the fly -off cutter body of frame body bottom opening place are cooled down and handle, and the fan is started to input the outside air into the air pipe, because the fan air inlet end is equipped with the protective net, and the sundries are intercepted, wherein, the fan is not high -speed fan, because the air pipe is helical in the frame body, makes the air circulation path lengthen, makes the air cooling effect better.

Description

Technical Field

[0001] This utility model relates to the field of polymer material extrusion equipment technology, specifically a novel high-speed flying knife mechanism with cooling function. Background Technology

[0002] In the extrusion molding process of polymer materials such as plastics and rubber, the high-speed flying knife mechanism is the core equipment for achieving fixed-length cutting of extruded products. It is widely used in the production lines of plastic pipes, profiles, rubber strips and other products. By rotating the flying knife at high speed, in coordination with the continuous discharge rhythm of the extruder, the material output from the extruder die head is quickly cut to ensure that the product length is accurate and consistent. However, in actual production, the fly knife body needs to maintain a high-speed operation for a long time, and its own mechanical friction will generate a lot of heat. At the same time, the temperature of the material output by the extruder is high, and the high-temperature material will continuously transfer heat to the fly knife body. Under the superposition of the two heats, the temperature of the fly knife body is prone to rise rapidly. The excessively high temperature will not only lead to a decrease in the hardness of the fly knife body material and accelerated wear of the cutting edge, but also shorten the service life of the fly knife and increase the equipment maintenance cost. Therefore, we need to provide a new type of high-speed fly knife mechanism with a cooling function. Utility Model Content

[0003] The purpose of this utility model is to provide a novel high-speed flying knife mechanism with a cooling function. The cooling mechanism is set inside the frame and continuously delivers cold air to the flying knife body to achieve cooling treatment of the flying knife body, thereby reducing the temperature of the flying knife body and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel high-speed flying knife mechanism with cooling function, comprising: The assembly includes a mounting frame, a flying knife body, and a cooling mechanism. One side of the mounting frame is connected to the extruder via a connecting frame. The mounting frame has a conveying pipe for conveying materials inside the extruder. The conveying pipe has a reserved slot for the movement of the flying knife body. The cooling mechanism is located at the top of the mounting frame and is used to cool the flying knife. The cooling mechanism includes a frame and a cooling plate. The frame is mounted on the top of the mounting bracket via two side baffles. The cooling plate is embedded in the top of the frame, with its bottom cooling surface facing the flying knife body.

[0005] Preferably, an air pipe is fixedly installed in the frame by a bracket. The air pipe is installed in a spiral shape in the frame, and the air inlet end of the air pipe is connected to a fan.

[0006] Preferably, the fan inlet is equipped with a protective mesh, the air pipe exhaust end is connected to an exhaust hood, and the exhaust hood is located on the top of the flying knife body.

[0007] Preferably, the bottom opening of the frame faces the flying knife body, and the frame is configured as a heat-insulating frame.

[0008] Preferably, the cooling chip is provided with a heat sink on top.

[0009] Preferably, a plate is fixedly mounted on one side of the mounting bracket by bolts, and a driver for rotating the flying knife body is provided inside the plate.

[0010] Preferably, the heat sink is fixed to the top of the frame with bolts, and the cooling chip is composed of multiple semiconductor cooling chips.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention incorporates a cooling mechanism within the frame. This mechanism continuously delivers cool air to the blade body, thereby cooling the blade body and reducing its temperature. The frame creates a relatively enclosed cooling space. Combined with the cooling surface of the cooling plate directly facing the blade body, the cool air is concentrated and confined around the blade body, preventing it from dissipating and escaping. Simultaneously, a spiral air pipe delivers airflow within the frame, uniformly and continuously delivering cool air to the blade body, quickly removing heat and effectively reducing its temperature. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional sectional view of the plate body of this utility model; Figure 3 This is an exploded perspective view of the structure of this utility model; Figure 4 This is a three-dimensional sectional view of the frame of this utility model.

[0013] In the diagram: 1. Mounting bracket; 2. Flying knife body; 3. Cooling mechanism; 31. Frame; 32. Cooling chip; 4. Delivery pipe; 5. Reserved slot; 6. Bracket; 7. Air pipe; 8. Fan; 9. Protective mesh; 10. Exhaust hood; 11. Heat sink; 12. Plate; 13. Driver. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4This utility model provides a technical solution: a novel high-speed flying knife mechanism with cooling function, comprising: Mounting frame 1, flying knife body 2 and cooling mechanism 3. One side of mounting frame 1 is connected to the extruder via a connecting frame. A conveying pipe 4 for conveying items inside the extruder is provided in the mounting frame 1. A reserved slot 5 for the movement of flying knife body 2 is provided in the conveying pipe 4. The cooling mechanism 3 is located on the top of mounting frame 1 and is used to cool the flying knife. The cooling mechanism 3 includes a frame 31 and a cooling plate 32. The frame 31 is mounted on the top of the mounting bracket 1 through two side baffles. The cooling plate 32 is embedded in the top of the frame 31, and the bottom cooling surface faces the flying knife body 2. Specifically, a cooling mechanism 3 is installed inside the frame 31. The cooling mechanism 3 continuously delivers cold air to the flying knife body 2 to cool down the flying knife body 2 and reduce its temperature. The frame 31 can form a relatively closed cooling space. With the cooling plate 32 facing the cooling surface of the flying knife body 2 directly, the cold air can be concentrated and constrained around the flying knife body 2 to prevent the cold air from dispersing and escaping. At the same time, the spiral air pipe 7 delivers airflow inside the frame 31, which can deliver cold air evenly and continuously to the flying knife body 2, quickly remove heat, and effectively reduce the temperature of the flying knife body 2.

[0016] An air pipe 7 is fixedly installed inside the frame 31 by a bracket 6. The air pipe 7 is installed in a spiral shape inside the frame 31, and the air inlet end of the air pipe 7 is connected to a fan 8. Furthermore, a copper air pipe 7 is welded and fixedly installed inside the frame 31 via a metal bracket 6. The air pipe 7 is spirally distributed inside the frame 31 and is positioned opposite to the bottom cooling surface of the cooling element 32. The air inlet end of the air pipe 7 is sealed and connected to the air outlet of the fan 8 via a plastic hose. The fan 8 is fixed to the outer wall of the baffle on one side of the frame 31 by bolts. The rigid support of the metal bracket 6 ensures that the spiral air pipe 7 is stable in position inside the frame 31, preventing the air pipe 7 from shifting due to airflow impact. The copper air pipe 7 has excellent thermal conductivity and can quickly absorb the cold energy transferred by the cooling element 32. Combined with the spiral structure, it extends the airflow path inside the frame 31, allowing for sufficient heat exchange between the air and the cold energy. This solves the problems of insufficient mixing of cold air and air and uneven cooling effect. At the same time, the flexible connection of the plastic hose can adapt to the installation deviation of the fan 8 and the air pipe 7, improving the ease of assembly.

[0017] The air intake end of the fan 8 is equipped with a protective net 9, and the exhaust end of the air pipe 7 is connected to an exhaust cover 10, which is located on the top of the flying knife body 2. It is worth noting that the air intake end of the fan 8 is detachably installed with a metal guard 9 via a clip, and the exhaust end of the air pipe 7 is fixed with a funnel-shaped plastic exhaust cover 10 via a threaded connection. The exhaust cover 10 has its opening facing downwards and its edge maintains a preset distance from the top cutting edge of the flying knife body 2. The metal guard 9 can effectively intercept external debris from entering the air pipe 7, preventing the air pipe 7 from being blocked and affecting airflow. This solves the problem of cooling interruption caused by foreign objects blocking the equipment. The funnel-shaped exhaust cover 10 can concentrate the cold air output from the air pipe 7 and guide it to the flying knife body 2, reducing the diffusion of cold air. At the same time, the plastic material is lightweight and corrosion-resistant, preventing rust caused by high-temperature material contamination during long-term use. The threaded connection with the air pipe 7 makes it easy to disassemble and clean the exhaust cover 10, improving the convenience of equipment maintenance.

[0018] The bottom opening of the frame 31 faces the flying knife body 2, and the frame 31 is set as an insulation frame; Specifically, the bottom opening of the frame 31 is directly aligned with the cutting area of ​​the flying knife body 2. The frame 31 is made of polyurethane insulation material. The inner walls of the side baffles of the frame 31 are engaged with the pre-set protrusions on the top of the mounting bracket 1. The polyurethane insulation material can effectively block external heat from entering the frame 31, reduce cold loss, and solve the problem of reduced cooling efficiency caused by the temperature difference between the inside and outside of the frame 31. The rubber sealing gasket can fill the gap between the frame 31 and the mounting bracket 1, further enhancing the insulation effect. At the same time, the engaging structure of the slot and the protrusion makes the frame 31 easy to quickly disassemble and assemble, facilitating the inspection and maintenance of the air pipe 7 and the cooling plate 32 inside the frame 31, and improving the equipment maintenance efficiency.

[0019] The top of the cooling chip 32 is equipped with a heat sink 11; It should be noted that the top heating surface of the cooling chip 32 is tightly bonded to the aluminum alloy heat sink 11 with thermally conductive silicone grease. The surface of the heat sink 11 is provided with several strip-shaped heat dissipation ribs. The edge of the heat sink 11 is fixedly connected to the mounting holes on the top of the frame 31 by bolts. The thermally conductive silicone grease can eliminate the gap between the cooling chip 32 and the heat sink 11, improve the heat transfer efficiency, and prevent the cooling chip 32 from experiencing a decrease in cooling performance due to heat accumulation. The aluminum alloy heat sink 11 and the strip-shaped heat dissipation ribs can increase the heat dissipation area and accelerate heat dissipation, solving the problem of overheating damage to the cooling chip 32 during long-term operation. The bolt connection method facilitates the disassembly and replacement of the heat sink 11, reducing maintenance costs.

[0020] A plate 12 is fixedly mounted on one side of the mounting bracket 1 by bolts, and a driver 13 for rotating the flying knife body 2 is provided inside the plate 12; Furthermore, the mounting bracket 1 has several threaded holes on one side, and the plate 12 is detachably connected to the mounting bracket 1 by bolts passing through the threaded holes. The plate 12 has a bearing seat on the side facing the cutter body 2. The output shaft of the driver 13 is connected to one end of the cutter body 2 through a coupling, and the driver 13 is fixed to the side of the plate 12 away from the cutter body 2 by bolts. The fit between the threaded holes and the bolts makes the plate 12 easy to disassemble and assemble. When it is necessary to clean the cutter body 2, the plate 12 can be removed and the cutter body 2 can be taken out as a whole, which solves the problem of cleaning difficulties caused by the limited installation position of the cutter body 2. The bearing seat can support one end of the cutter body 2 and reduce its shaking when rotating at high speed. The coupling can compensate for the coaxiality deviation between the output shaft of the driver 13 and the cutter body 2, ensuring the stable rotation of the cutter body 2 and improving the cutting accuracy.

[0021] The heat sink 11 is fixed to the top of the frame 31 by bolts, and the cooling chip 32 is composed of multiple semiconductor cooling chips 32; The heat sink 11 is fixed to the top of the frame 31 by countersunk bolts. The head of the countersunk bolt does not protrude from the surface of the heat sink 11. The cooling chip 32 is composed of multiple semiconductor cooling chips 32 of the same specification. The semiconductor cooling chips 32 are connected in series by wires, and the edges of the semiconductor cooling chips 32 are fixed to the inner wall of the top of the frame 31 by high-temperature resistant adhesive. The countersunk bolts can avoid the bolt head from obstructing the heat dissipation of the heat sink 11, solving the problem of the bolt protrusion affecting the heat dissipation effect. The series connection of multiple semiconductor cooling chips 32 can improve the overall cooling capacity and meet the cooling requirements of the flying knife body 2 during high-intensity operation.

[0022] The cooling chip 32, driver 13 and fan 8 involved in this application are all implemented using existing mature technologies and are connected to an external PLC controller and power supply. This is a conventional technical means in this field, so their specific circuit connections, control logic and working process will not be described in detail.

[0023] The device discharges material through the conveying pipe 4 along with the extruder. Since the conveying pipe 4 has a pre-reserved groove 5 for cutting by the flying knife body 2, the driver 13 is activated to rotate the flying knife body 2, cutting the material. The material moves with the extruder, and the flying knife body 2 generates a high amount of heat. The cooling plate 32 is activated to cool the air pipe 7 inside the frame 31 and the flying knife body 2 at the bottom opening of the frame 31. The fan 8 is activated to input external air into the air pipe 7. Since the air inlet of the fan 8 has a protective mesh 9 to intercept debris, the fan 8 is not a high-speed fan. The air pipe 7 is spiral-shaped. Inside the frame 31, the airflow path is lengthened, resulting in better air cooling. Finally, the cold air is blown onto the flying knife body 2 through the exhaust hood 10, achieving dual cooling treatment for the flying knife body 2. A heat sink 11 is connected to the heating surface of the cooling chip 32 with silicone grease to ensure that the cooling chip 32 can work normally. Furthermore, baffles are provided on both sides of the frame 31, which are directly snapped onto the mounting bracket 1 for easy disassembly. The mounting bracket 1 is detachably connected to the plate 12 with bolts, making it easy to remove the plate 12. The driver 13 and the flying knife body 2 are located on the plate 12, facilitating cleaning of the flying knife body 2.

[0024] 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. A novel high-speed flying knife mechanism with cooling function, characterized in that, include: The mounting frame (1), the flying knife body (2), and the cooling mechanism (3) are connected to the extruder on one side via a connecting frame. The mounting frame (1) is provided with a conveying pipe (4) for conveying items inside the extruder. The conveying pipe (4) is provided with a reserved slot (5) for the movement of the flying knife body (2). The cooling mechanism (3) is located on the top of the mounting frame (1) and is used to cool the flying knife. The cooling mechanism (3) includes a frame (31) and a cooling plate (32). The frame (31) is mounted on the top of the mounting bracket (1) through two side baffles. The cooling plate (32) is embedded in the top of the frame (31) and the bottom cooling surface faces the flying knife body (2).

2. The novel high-speed flying knife mechanism with cooling function according to claim 1, characterized in that: An air pipe (7) is fixedly installed inside the frame (31) by a bracket (6). The air pipe (7) is installed in a spiral shape inside the frame (31), and the air inlet end of the air pipe (7) is connected to a fan (8).

3. The novel high-speed flying knife mechanism with cooling function according to claim 2, characterized in that: The fan (8) has a protective net (9) at its air inlet end, and the air pipe (7) has an exhaust hood (10) at its exhaust end. The exhaust hood (10) is located on the top of the flying knife body (2).

4. The novel high-speed flying knife mechanism with cooling function according to claim 1, characterized in that: The bottom opening of the frame (31) faces the flying knife body (2), and the frame (31) is set as a heat preservation frame.

5. A novel high-speed flying knife mechanism with cooling function according to claim 1, characterized in that: The cooling chip (32) is provided with a heat sink (11) on top.

6. A novel high-speed flying knife mechanism with cooling function according to claim 1, characterized in that: The mounting bracket (1) has a plate (12) fixedly mounted on one side by bolts, and the plate (12) is provided with a driver (13) for rotating the flying knife body (2).

7. A novel high-speed flying knife mechanism with cooling function according to claim 5, characterized in that: The heat sink (11) is fixed to the top of the frame (31) by bolts, and the cooling chip (32) is composed of multiple semiconductor cooling chips (32).

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