Extruder die head with variable-frequency heating and automatic screen changing functions

Abstract

The invention relates to a variable frequency heating automatic screen changing extruder die head, and belongs to the technical field of extruders, the extruder die head comprises a connecting plate, one side of the extruder connecting plate is provided with a sleeve column and an oil cylinder support, the sleeve column is internally provided with a temperature sensor, the temperature sensor is electrically connected with a controller, and the controller is electrically connected with the oil cylinder support. The sleeve column is sleeved with a coil sleeve column, the coil sleeve column is sleeved with a heating coil, the coil sleeve column is in sliding connection with the sleeve column, an installation oil cylinder is arranged on the oil cylinder support, a first filter screen communicated with the extrusion channel is arranged in the sleeve column, and the first filter screen is arranged in a filter screen installation channel. The width of the first filter screen is smaller than that of the filter screen installation channel, a positioning assembly used for limiting the position of the first filter screen is arranged on one side of the first filter screen, a pressure sensor is arranged in the extrusion channel and electrically connected with a controller, the end of the extrusion channel is communicated with a mouth die, and the mouth die is arranged on the extrusion channel. And the mouth mold is arranged in the sleeve column.

Description

Technical Field

[0001] The invention relates to the technical field of extruders, in particular to an extruder die head with variable frequency heating and automatic screen changing. Background Art

[0002] At present, with the development of polymer processing industry, the application of extruder as one of the main processing equipment has been rapidly developed. The existing extruder is equipped with a filter screen in the die head, and the material is extruded through the filter screen and finally formed into a product. In actual production, the material and some waste materials will block the filter screen die hole, which needs to be frequently disassembled or cleaned. The filter screen is easily damaged or deformed, which directly affects the product quality. The traditional method requires stopping the extruder and manually opening the die head to replace the filter screen. This method will cause production interruption, affect production efficiency and output, and require multiple workers to cooperate in operation, which invisibly increases the labor intensity and also poses safety hazards. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an extruder die head with variable frequency heating and automatic screen changing, which can automatically replace the filter screen, improve the filter screen replacement efficiency, and increase production capacity.

[0004] In order to achieve the above-mentioned invention object, the present invention provides an extruder die head with variable frequency heating and automatic screen changing, the extruder die head includes a connecting plate, a sleeve column and a cylinder bracket are provided on one side of the extruder connecting plate, a coil sleeve column is sleeved on the sleeve column, a heating coil is sleeved on the coil sleeve column, the coil sleeve column is slidably connected to the sleeve column, a mounting cylinder is provided on the cylinder bracket, a first filter screen connected to an extrusion channel is provided in the sleeve column, the first filter screen is arranged in the filter screen installation channel, the width of the first filter screen is smaller than the width of the filter screen installation channel, a positioning component for limiting the position of the first filter screen is provided on one side of the first filter screen, a pressure sensor is provided in the extrusion channel, the pressure sensor is electrically connected to a controller, the end of the extrusion channel is connected to a die, and the die is arranged in the sleeve column.

[0005] Furthermore, a telescopic rod is provided on the oil cylinder bracket, a telescopic end of the telescopic rod is connected to the coil sleeve column, a plurality of guide rods are provided on the sleeve column, and the coil sleeve column is slidably connected to the guide rods.

[0006] Furthermore, a first left positioning cylinder and a second left positioning cylinder are provided on one side of the first filter, and the first left positioning cylinder and the second left positioning cylinder are arranged in an up-and-down direction. A first right positioning cylinder and a second right positioning cylinder are provided on the other side of the first filter, and the first right positioning cylinder and the second right positioning cylinder are arranged in an up-and-down direction.

[0007] Furthermore, the positioning assembly includes a spring and a positioning head arranged in the mounting hole, the positioning head is engaged with a limiting groove arranged on the side wall of the first filter screen, and the spring is located on a side of the positioning head away from the limiting groove, for providing elastic force to the positioning head.

[0008] Furthermore, the filter installation channel includes a guide block located on one side wall, the guide block includes a guide wall, the guide wall is parallel to the filter installation channel, and the width between the guide wall and the side wall on the opposite side is equal to the width of the first filter.

[0009] Furthermore, a temperature sensor is provided inside the sleeve column, and the temperature sensor is electrically connected to the controller.

[0010] Furthermore, a liquid cooling assembly is provided inside the sleeve column, and the liquid cooling assembly includes two liquid cooling pipe groups symmetrically arranged up and down, and the liquid cooling pipe groups are connected to a water joint, and the water joint is arranged on the cylinder bracket.

[0011] Furthermore, a plurality of air cooling devices are arranged around the circumference of the inner side wall of the coil sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The die head of the extruder can realize the functions of variable frequency heating and temperature control. The die head is wrapped with a heating coil, which can realize the production needs of rapid heating and temperature rise through electromagnetic heating. It is also equipped with a water cooling pipeline system and an air cooling system. It is connected to the centralized control system through a temperature sensor, which can monitor and adjust the die head temperature in real time to achieve more accurate temperature control and ensure the quality of extruded products. At the same time, it avoids the energy waste of traditional heating methods. When the equipment is shut down, it can also be quickly cooled down through the water cooling system, which can protect the equipment, save energy and reduce consumption, and reduce safety hazards;

[0014] 2. The extruder die filter can be replaced automatically. By adding a pressure sensor, the pressure value can be detected in real time to determine whether the filter needs to be replaced. The die filter can be replaced automatically by installing an oil cylinder. There is no need for manual disassembly and installation, which greatly reduces the time and labor intensity of manual operation, achieves production continuity, improves work efficiency, and ensures product quality. Timely replacement of the filter can effectively ensure the quality of the extruded material, reduce impurities and defects, and replace the filter without stopping the machine to reduce material waste and production interruptions. At the same time, it reduces the number of frequent starts and stops of the equipment, reduces the frequency of equipment failures, and extends the service life of the equipment.

[0015] 3. Intelligence and automation can realize intelligent control, automatically adjust working parameters according to production needs, improve production efficiency and product quality, and have remote monitoring function. Operators can monitor equipment operation status and production data in real time through remote terminals, and discover and solve problems in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0017] Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0018] Figure 3 is another cross-sectional structural schematic diagram of an embodiment of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the connection between the liquid cooling component and the coil sleeve column;

[0020] Figure 5 for Figure 2 A is an enlarged cross-sectional structural diagram. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the invention, rather than all the embodiments. The embodiments of the present invention are described below in conjunction with the drawings.

[0022] like Figure 1-5 As shown, a variable frequency heating automatic screen changing extruder die head comprises a connecting plate 3, a sleeve column 11 and a cylinder support 2 are provided on one side of the extruder connecting plate 3, a coil sleeve column 9 is sleeved on the sleeve column 11, a heating coil 7 is sleeved on the coil sleeve column 9, the coil sleeve column 9 is slidably connected with the sleeve column 11, a mounting cylinder 1 is provided on the cylinder support 2, a first filter screen 12 connected to an extrusion channel 24 is provided in the sleeve column 11, the first filter screen 12 is arranged in the filter screen installation channel 28, the width of the first filter screen 12 is smaller than the width of the filter screen installation channel 28, a positioning component 19 for limiting the position of the first filter screen 12 is provided on one side of the first filter screen 12, a pressure sensor 23 is provided in the extrusion channel 24, the pressure sensor 23 is electrically connected to the controller, the end of the extrusion channel 24 is connected to the die 10, and the die 10 is arranged in the sleeve column 11;

[0023] The connecting plate 3 is used to mount the die head on the extruder, the heating coil 7 is used for heating, and the pressure sensor 23 is used to monitor the pressure of the extrusion channel 24;

[0024] Here’s how it works:

[0025] However, when the first filter screen 12 is clogged and the pressure increases, the pressure sensor 23 senses the change in pressure and starts to automatically replace the filter screen. At this time, the telescopic rod 4 works to push the coil sleeve column 9 forward to reserve enough space for replacing the filter screen. After the coil sleeve column 9 is moved, the new second filter screen 13 is placed above the first filter screen 12. The first right positioning cylinder 16 and the second right positioning cylinder 17 first break away from the contact with the first filter screen 12, and then the first left positioning cylinder 14 and the second left positioning cylinder 15 push the first filter screen 12 to reset, reducing the resistance and facilitating the pushing of the installation cylinder 1. The telescopic end of the installation cylinder 1 pushes the second filter screen 13 to continue to move downward. Under the pressure of the installation cylinder 1, the first filter screen 12 moves downward, and the positioning head 26 pushes the spring 27 to retract so that the positioning head 26 is separated from the limiting groove 25, and the first filter screen 12 continues to be pushed downward until the second filter screen 13 is pushed to the positioning head 26 and the groove thereon is contacted and connected, and it can be judged that the replaced second filter screen 13 is installed in place, and it can also be judged that it is installed in place according to the stroke of the installation cylinder 1. The blocked first filter screen 12 falls out from the bottom, and the replacement is completed. After the replacement is completed, the first left positioning cylinder 14, the second left positioning cylinder 15, the first right positioning cylinder 16 and the second right positioning cylinder 17 are operated to clamp the second filter screen 13;

[0026] A telescopic rod 4 is provided on the oil cylinder bracket 2, and the telescopic end of the telescopic rod 4 is connected to the coil sleeve column 9. A plurality of guide rods 8 are provided on the sleeve column 11, and the coil sleeve column 9 is slidably connected to the guide rods 8. The telescopic rod 4 can be a cylinder. By setting the telescopic rod 4, the coil sleeve column 9 can be pushed to move back and forth on the sleeve column 11, so as to leave space when replacing the filter screen;

[0027] A first left positioning cylinder 14 and a second left positioning cylinder 15 are provided on one side of the first filter screen 12, and the first left positioning cylinder 14 and the second left positioning cylinder 15 are arranged in an up-down direction. A first right positioning cylinder 16 and a second right positioning cylinder 17 are provided on the other side of the first filter screen 12, and the first right positioning cylinder 16 and the second right positioning cylinder 17 are arranged in an up-down direction. The first left positioning cylinder 14, the second left positioning cylinder 15, the first right positioning cylinder 16 and the second right positioning cylinder 17 are supplied with oil through an oil joint 6, and the first left positioning cylinder 14, the second left positioning cylinder 15, the first right positioning cylinder 16 and the second right positioning cylinder 17 are used to clamp the first filter screen 12 to keep the first filter screen 12 stable and reliable during operation;

[0028] The positioning assembly 19 includes a spring 27 and a positioning head 26 arranged in the mounting hole. The positioning head 26 is engaged with a limiting groove 25 arranged on the side wall of the first filter screen 12. The spring 27 is located on a side of the positioning head 26 away from the limiting groove 25, and is used to provide elastic force to the positioning head 26. The positioning head 26 contacts the limiting groove 25 under the action of the elastic force of the spring 27. The limiting groove 25 is a triangular groove. Under the action of the force from top to bottom, the positioning head 26 is easily separated from the limiting groove 25 of the triangular groove, and then separated and replaced when the filter screen is replaced. The specifications of the second filter screen 13 are the same as those of the first filter screen 12, and are used for replacement;

[0029] The filter installation channel 28 includes a guide block 18 located on one side wall, and the guide block 18 includes a guide wall 29. The guide wall 29 is parallel to the filter installation channel 28. The width between the guide wall 29 and the side wall on the opposite side is equal to the width of the first filter 12. The guide block 18 is used to replace the filter to guide the new second filter 13 so that it can smoothly enter the filter installation channel 28. The guide block 18 and the positioning assembly 19 are arranged on the same side. By setting the guide block 18, it is also convenient for the positioning head 26 to be better connected with the second filter 13;

[0030] A temperature sensor 20 is provided inside the sleeve column 11, and the temperature sensor 20 is electrically connected to the controller. The temperature sensor 20 is used to monitor the temperature. If the temperature is too high, the liquid cooling component and the air cooling device 21 are used to cool it down. If the temperature is too low, the heating coil 7 is controlled to heat it up to increase the temperature.

[0031] A liquid cooling assembly is also provided inside the sleeve column 11. The liquid cooling assembly includes two liquid cooling pipe groups 22 symmetrically arranged up and down. The liquid cooling pipe group 22 is connected to the water joint 5. The water joint 5 is arranged on the oil cylinder bracket 2. The liquid cooling assembly is used to cool the inside. A plurality of air cooling devices 21 are arranged around the circumference of the inner wall of the coil sleeve column 9. The air cooling devices 21 are also used to reduce the internal temperature. Through the cooperation of the two, the cooling effect is improved.

[0032] The extruder die head can realize the functions of variable frequency heating and temperature control. A heating coil 7 is wound around the die head, and the production demand of rapid heating and temperature rise can be realized through electromagnetic heating. At the same time, it is equipped with a water cooling pipeline system and an air cooling system. It is connected to the centralized control system through a temperature sensor 20, and the die head temperature can be monitored and adjusted in real time to achieve more accurate temperature control, ensure the quality of the extruded product, and avoid the energy waste of the traditional heating method. When the equipment is shut down, it can also be quickly cooled down through the water cooling system, which can protect the equipment, save energy and reduce consumption, and reduce safety hazards;

[0033] The die filter of the extruder can be replaced automatically. By adding a pressure sensor 23, the pressure value can be detected in real time to determine whether the filter needs to be replaced. By installing the oil cylinder 1, the die filter can be replaced automatically without manual disassembly and installation, which greatly reduces the time and labor intensity of manual operation, achieves production continuity and thus improves work efficiency, ensures product quality, and replaces the filter in time, which can effectively ensure the quality of the extruded material, reduce impurities and defects, and replaces the filter without stopping the machine to reduce material waste and production interruptions. At the same time, it reduces the number of frequent starts and stops of the equipment, reduces the frequency of equipment failures, and extends the service life of the equipment.

[0034] Intelligence and automation can realize intelligent control, automatically adjust working parameters according to production needs, improve production efficiency and product quality, and have remote monitoring function. Operators can monitor equipment operation status and production data in real time through remote terminals to discover and solve problems in time.

[0035] The technical solution of the present invention is described above in conjunction with specific implementation methods, but it should be noted that the above descriptions are only for explaining the solution of the present invention and cannot be interpreted in any way as a specific limitation on the scope of protection of the invention. Based on the explanation here, those skilled in the art can think of other specific implementation methods or equivalent replacements of the present invention without creative work, and they will all fall within the scope of protection of the present invention.

Claims

1. A variable frequency heating automatic screen changing extruder die head, characterized in that: The extruder die head comprises a connecting plate (3), one side of the extruder connecting plate (3) is provided with a sleeve column (11) and a cylinder support (2), the sleeve column (11) is sleeved with a coil sleeve column (9), the coil sleeve column (9) is sleeved with a heating coil (7), the coil sleeve column (9) is slidably connected to the sleeve column (11), the cylinder support (2) is provided with a telescopic rod (4), the telescopic end of the telescopic rod (4) is connected to the coil sleeve column (9), the cylinder support (2) is provided with a mounting cylinder (1), and the sleeve column (11) is provided with a heating coil (7) connected to the extrusion channel (24). A first filter screen (12) is connected to the extrusion channel (24), the first filter screen (12) is arranged in the filter screen installation channel (28), the width of the first filter screen (12) is smaller than the width of the filter screen installation channel (28), a positioning component (19) for limiting the position of the first filter screen (12) is arranged on one side of the first filter screen (12), a pressure sensor (23) is arranged in the extrusion channel (24), the pressure sensor (23) is electrically connected to the controller, the end of the extrusion channel (24) is connected to the die (10), and the die (10) is arranged in the sleeve (11).

2. The extruder die head with variable frequency heating and automatic screen changing according to claim 1, characterized in that: A plurality of guide rods (8) are arranged on the sleeve column (11), and the coil sleeve column (9) is slidably connected to the guide rods (8).

3. The extruder die head with variable frequency heating and automatic screen changing according to claim 1, characterized in that: A first left positioning cylinder (14) and a second left positioning cylinder (15) are provided on one side of the first filter screen (12), and the first left positioning cylinder (14) and the second left positioning cylinder (15) are arranged in an up-down direction; a first right positioning cylinder (16) and a second right positioning cylinder (17) are provided on the other side of the first filter screen (12), and the first right positioning cylinder (16) and the second right positioning cylinder (17) are arranged in an up-down direction.

4. The extruder die head with variable frequency heating and automatic screen changing according to claim 1, characterized in that: The positioning assembly (19) comprises a spring (27) and a positioning head (26) arranged in the mounting hole; the positioning head (26) is engaged with a limiting groove (25) arranged on the side wall of the first filter screen (12); the spring (27) is located on a side of the positioning head (26) away from the limiting groove (25) and is used to provide elastic force to the positioning head (26).

5. The extruder die head with variable frequency heating and automatic screen changing according to claim 1, characterized in that: The filter screen installation channel (28) comprises a guide block (18) located on one side wall, the guide block (18) comprises a guide wall (29), the guide wall (29) is parallel to the filter screen installation channel (28), and the width between the guide wall (29) and the side wall on the opposite side is equal to the width of the first filter screen (12).

6. The extruder die head with variable frequency heating and automatic screen changing according to claim 1, characterized in that: A temperature sensor (20) is provided inside the sleeve column (11), and the temperature sensor (20) is electrically connected to the controller.

7. The extruder die head with variable frequency heating and automatic screen changing according to claim 1, characterized in that: A liquid cooling assembly is also provided inside the sleeve column (11), and the liquid cooling assembly comprises two liquid cooling pipe groups (22) symmetrically arranged up and down, and the liquid cooling pipe groups (22) are connected to a water joint (5), and the water joint (5) is arranged on the oil cylinder bracket (2).

8. The extruder die head with variable frequency heating and automatic screen changing according to claim 1, characterized in that: A plurality of air cooling devices (21) are arranged around the circumference of the inner side wall of the coil sleeve column (9).

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