Spinning box for monofilament production

Abstract

The utility model discloses a spinning box for monofilament production, which comprises a box shell, a distribution mechanism, a plurality of spinning units and a heating medium mechanism, wherein a heating cavity is formed in the box shell, and the distribution mechanism, the spinning units and the heating medium mechanism are mounted on the box shell. The distribution mechanism comprises a total distribution head and a plurality of metering components which are mounted on the box shell, and a plurality of distribution passages which are communicated between the total distribution head and the plurality of metering components; the total distribution head is configured to uniformly distribute a melt extruded by the extrusion equipment to the plurality of metering components through the plurality of distribution passages; the plurality of spinning units are in one-to-one correspondence with the plurality of metering components, each spinning unit comprises a plurality of spinning ports for outputting the melt, and each metering component is configured to uniformly distribute the melt conveyed by the distribution passage to the plurality of spinning ports; the heating medium mechanism comprises a heating medium inlet pipe and a heating medium return pipe which are communicated with the heating cavity, and a plurality of electric heating rods arranged on the box shell in a penetrating manner; the multi-head filament spraying device can uniformly spray filaments in a multi-head mode and is suitable for production of monofilaments of different varieties.

Description

Technical Field

[0001] This application relates to the field of chemical fiber spinning equipment technology, and in particular to a spinning box for monofilament production. Background Technology

[0002] The spinning box is one of the main components of a melt spinning machine, providing a stable temperature environment for the spinning process and ensuring smooth spinning. To meet market demands for cost reduction and efficiency improvement, individual monofilament spinning boxes are increasingly designed with multiple heads and positions. However, as the number of heads and positions increases, the unevenness of spinning between different positions also increases. In the production and trial production of differentiated new monofilament varieties, different raw materials need to be selected for spinning, and the spinning process temperatures and heating methods for different raw materials also vary. To adapt to the spinning needs of different monofilament varieties, spinning boxes with different structural forms need to be manufactured, which significantly increases production costs and wastes resources. Existing monofilament spinning boxes cannot meet the requirements of multi-functionality and the production of multiple monofilament varieties. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a spinning box for monofilament production.

[0004] To achieve the above objectives, this application adopts the following technical solution: a spinning box for monofilament production, comprising:

[0005] The outer shell of the box has a heating chamber inside;

[0006] The dispensing mechanism includes a main dispensing head and a plurality of metering components mounted on the housing, and a plurality of dispensing passages connecting the main dispensing head and the plurality of metering components. Each metering component is connected to one of the dispensing passages. The main dispensing head has a main inlet connected to an extrusion device and is configured to uniformly distribute the melt extruded by the extrusion device to the plurality of metering components through the plurality of dispensing passages.

[0007] Multiple spinning units correspond one-to-one with the multiple metering components. Each spinning unit includes multiple spinning nozzles for molten material output. The multiple spinning nozzles of each spinning unit are connected to the corresponding metering component. Each metering component is configured to uniformly distribute the molten material transported by the distribution path to the multiple spinning nozzles.

[0008] The heat transfer mechanism includes a heat transfer inlet pipe and a heat transfer return pipe communicating with the heating chamber, as well as a plurality of electric heating rods passing through the housing. The plurality of electric heating rods are arranged to avoid the distribution mechanism and the plurality of spinnerets.

[0009] In the above technical solution, a further preferred embodiment is that the housing includes an upper housing and a lower housing that are arranged opposite to each other and are connected to each other, and the heating cavity is formed between the upper housing and the lower housing.

[0010] In the above technical solution, a further preferred embodiment is that the main distribution head includes a union flange installed on the housing and a distribution connector located in the heating chamber. The main inlet is opened on the union flange, and the distribution connector has multiple distribution outlets connected to the main inlet. Each distribution passage is connected to one of the distribution outlets.

[0011] In the above technical solution, it is further preferred that each of the distribution channels includes a distribution pipe, a static mixer and a refrigeration valve assembly, wherein the distribution pipe is sequentially connected to the distribution outlet, the static mixer, the refrigeration valve assembly and the metering component, and the inner diameter and length of the distribution pipes of the multiple distribution channels are consistent with each other.

[0012] In the above technical solution, it is further preferred that each metering component includes a metering inlet and a plurality of metering outlets connected to the metering inlet. The metering inlet is connected to the main distribution head through a corresponding distribution pipe. The number of metering outlets is consistent with the number of spinnerets of the corresponding spinneret unit. Each spinneret is connected to a metering outlet through a melt tube. The inner diameters and lengths of the plurality of melt tubes connected to each metering component are consistent with each other.

[0013] In the above technical solution, a further preferred embodiment is that each of the spinnerets includes a component base, a plurality of rectangular blocks arranged within the component base, and a plurality of feed connectors mounted on the component base. The component base passes through the housing and has a rectangular cavity inside that can accommodate the plurality of rectangular blocks. The plurality of feed connectors are spaced apart on the component base along the front-back direction and communicate with the rectangular cavity. Each feed connector is connected to one of the melt tubes. The plurality of spinnerets are sequentially formed at the bottom of the component base along the front-back direction and communicate with the rectangular cavity. Each feed connector corresponds to one of the spinnerets. Each rectangular block has a melt flow channel that connects one of the feed connectors and one of the spinnerets.

[0014] In the above technical solution, it is further preferred that each of the rectangular blocks is equipped with a clamping device, and each clamping device is configured to clamp the corresponding rectangular block against the corresponding feed connector.

[0015] In the above technical solution, a further preferred embodiment is that the housing is also equipped with a safety valve, an electrical contact pressure gauge, and a temperature sensor.

[0016] Compared with the prior art, this application achieves the following beneficial effects:

[0017] The structure of this application is simple, capable of uniform spinning from multiple heads, and can adapt to the process requirements of different types of monofilaments. It is a multi-purpose machine, which improves equipment utilization, reduces production costs, and reduces resource waste. Attached Figure Description

[0018] Figure 1 This application provides a partial structural schematic diagram of a spinning box for monofilament production, as shown in the embodiments of the present application.

[0019] Figure 2 for Figure 1 Side view of the spinning box in the middle;

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0021] Figure 4 for Figure 1 A top view of the spinning box in the middle;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure of the main distribution head;

[0023] Figure 6 for Figure 4 A schematic diagram of the metering component in the diagram.

[0024] The components are as follows: 10. Housing; 101. Upper housing; 102. Lower housing; 103. Heating chamber; 104. Housing mounting feet; 20. Distribution mechanism; 2. Main distribution head; 21. Union flange; 22. Distribution joint; 23. Main inlet; 24. Distribution outlet; 3. Metering components; 31. Metering inlet; 32. Metering outlet; 33. Melt pipe; 34. Pump body; 35. Transition plate; 36. Sealing gasket; 37. Distribution plate; 38. Seat sleeve; 4. Distribution passage. 41. Static mixer; 42. Refrigeration valve assembly; 43. Distribution pipe; 30. Spinneret unit; 5. Spinneret nozzle; 6. Component seat; 7. Rectangular block; 71. Melt channel; 8. Feed connector; 81. Melt through hole; 9. Tightening device; 91. Threaded seat; 92. Tightening bolt; 40. Heat medium mechanism; 11. Heat medium inlet pipe; 12. Heat medium return pipe; 13. Electric heating rod; 14. Safety valve; 15. Electric contact pressure gauge; 16. Temperature sensor. Detailed Implementation

[0025] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0026] This application provides a spinning box for monofilament production, such as... Figure 1 , 2 As shown, the spinning box includes: a box housing 10, a distribution mechanism 20, multiple spinnerets 30, and a heat transfer medium mechanism 40. The distribution mechanism 20, multiple spinnerets 30, and heat transfer medium mechanism 40 are all mounted on the box housing 10. The distribution mechanism 20 is connected to the extrusion equipment and is used to receive the melt output from the extrusion equipment and distribute the melt evenly downstream. The multiple spinnerets 30 are connected to the distribution mechanism 20 and output the distributed melt evenly from multiple spinnerets. The heat transfer medium mechanism 40 provides heat transfer medium into the box housing 10, thereby adjusting the temperature of the melt conveyed in the distribution mechanism 20 and preventing the melt from cooling and solidifying during conveying.

[0027] The housing 10 includes an upper housing 101 and a lower housing 102 that are arranged opposite to each other and are connected to each other. A heating chamber 103 for containing heat medium is defined between the upper housing 101 and the lower housing 102. The housing 10 is also equipped with a plurality of housing hangers 104, which are installed around the lower housing 102 to support the housing 10 on the production line.

[0028] like Figure 1 , 2 As shown in Figure 4, the dispensing mechanism 20 includes a main dispensing head 2 and multiple metering components 3 mounted on the housing 10, as well as multiple dispensing channels 4 connecting the main dispensing head 2 and the multiple metering components 3. The multiple metering components 3 are arranged sequentially from front to back in the heating chamber 103. The number of metering components 3 is the same as the number of dispensing channels 4, and each metering component 3 is connected to one dispensing channel 4.

[0029] like Figure 2 , 4As shown in Figure 5, the main distribution head 2 includes a union flange 21 mounted on the upper housing 101 and a distribution connector 22 located in the heating chamber 103. The union flange 21 has a main inlet 23 connected to the extrusion equipment, and the distribution connector 22 has multiple distribution outlets 24 connected to the main inlet 23. Each distribution passage 4 is connected to one distribution outlet 24. The main distribution head 2 evenly distributes the melt extruded from the extrusion equipment to multiple metering components 3 through multiple distribution passages 4. The inner cavity of the distribution connector 22 is finely polished and electrolytically treated, resulting in a surface roughness of Ra0.2, effectively preventing the melt from stagnating in the distribution connector 22.

[0030] Each distribution channel 4 includes a static mixer 41, a freezing valve assembly 42, and a distribution pipe 43. The distribution pipe 43 sequentially connects the corresponding distribution outlet 24, the static mixer 41, the freezing valve assembly 42, and the metering component 3. The static mixer 41 and the freezing valve assembly 42 can eliminate the differences in radial component concentration, temperature, and viscosity of the melt flowing in the pipe, improving the uniformity of the finished monofilament quality between different spinning positions. To ensure that the residence time and pressure of the melt distributed by the main distribution head 2 to each metering component 3 are consistent in the corresponding distribution channel 4, the inner diameters and lengths of the distribution pipes 43 of the multiple distribution channels 4 are consistent with each other.

[0031] like Figure 2 , 4As shown in Figure 6, a metering component 3 corresponds to a spinneret unit 30. Each spinneret unit 30 includes multiple spinneret nozzles 5 for molten material output. The metering component 3 is connected to the multiple spinneret nozzles 5 of the corresponding spinneret unit 30 to uniformly transport the molten material distributed by the corresponding distribution channel 4 to the connected multiple spinneret nozzles 5. Each metering component 3 includes a metering inlet 31, multiple metering outlets 32, multiple molten material tubes 33, a pump body 34, a transition plate 35, a sealing gasket 36, a distribution plate 37, and a seat sleeve 38. The pump body 34 is coaxially mounted on the upper side of the transition plate 35, and the distribution plate 37 is coaxially mounted on the lower side of the transition plate 35. The sealing gasket 36 seals between the transition plate 35 and the distribution plate 37 to prevent the molten material from leaking between the transition plate 35 and the distribution plate 37 during transport. The seat sleeve 38 is coaxially sleeved on the outer side of the transition plate 35. A metering inlet 31 and multiple metering outlets 32 are provided on a distribution plate 37. The multiple metering outlets 32 are circumferentially spaced around the metering inlet 31. A corresponding distribution pipe 43 is inserted into the metering inlet 31. One end of a melt pipe 33 is inserted into each metering outlet 32, and the other end of each melt pipe 33 corresponds to a spinneret 5 of the corresponding spinneret unit 30. The melt distributed by the distribution pipe 43 is fed into the pump body 34 from the metering inlet 31, and then the pump body 34 evenly distributes the melt to the multiple metering outlets 32, and the multiple melt pipes 33 evenly deliver it to the corresponding spinneret 5. To ensure uniform distribution of the melt, the inner diameters of the multiple melt pipes 33 connected to each metering component 3 are consistent, and the lengths of the melt pipes 33 connecting each metering outlet 32 ​​to the corresponding spinneret 5 are also consistent, ensuring that the residence time and pressure of the melt distributed by the metering component 3 to each spinneret 5 are consistent.

[0032] The multiple distribution pipes 43 and multiple melt pipes 33 of equal diameter and length ensure that the melt pressure and flow rate of each spinneret 5 distributed by the main distribution head 2 to each spinneret unit 30 are consistent, thereby improving the uniformity of multi-head spinnereting and achieving uniform spinnereting with multiple numbers of spinnerets.

[0033] like Figure 2-4As shown, multiple spinnerets 30 are also arranged sequentially from front to back within the heating chamber 103, with each spinneret 30 located to the left of its corresponding metering component 3. Each spinneret 30 includes a component base 6, multiple rectangular blocks 7 arranged within the component base 6, and multiple feed connectors 8 mounted on the component base 6. The component base 6 passes through the housing 10 and has a rectangular cavity inside capable of accommodating multiple rectangular blocks 7. The upper end of the component base 6 is connected to the upper housing 101, and the lower end of the component base 6 is connected to the lower housing 102. Multiple rectangular blocks 7 are spaced apart within the rectangular cavity in the front-to-back direction. Multiple feed connectors 8 are spaced apart on the component base 6 in the front-to-back direction and communicate with the rectangular cavity. Multiple spinnerets 5 are sequentially formed at the bottom of the component base 6 in the front-to-back direction and communicate with the rectangular cavity. Each feed connector 8 corresponds to one spinneret 5. Each rectangular block 7 has a melt flow channel 71 connecting one feed connector 8 and one spinneret 5. Each spinneret 30 has multiple feed joints 8 that correspond one-to-one with multiple metering outlets 32 of the corresponding metering component 3. Each feed joint 8 has a melt through-hole 81 that connects to the corresponding melt flow channel 71. Each feed joint 8 is connected to the corresponding metering outlet 32 ​​by a melt tube 33. The melt tube 33 supplies melt from the corresponding metering outlet 32 ​​to the connected melt through-hole 81, and then outputs it from the corresponding spinneret 5 through the melt flow channel 71. Each melt tube 33 is finely polished and electrolytically treated to achieve a surface roughness of Ra0.2 inside the melt tube 33.

[0034] Each rectangular block 7 is equipped with a clamping device 9. Each clamping device 9 includes a threaded seat 91 that passes through the lower housing 102 and a clamping bolt 92 that mates with the threaded seat 91. The clamping device 9 is located on the left side of the corresponding rectangular block 7. The clamping bolt 92 is screwed inward in the threaded seat 91 so that the top of the clamping bolt 92 abuts against the rectangular block 7 and pushes the rectangular block 7 to the right until the rectangular block 7 abuts against the corresponding feed connector 8, so that the melt flow channel 71 in the rectangular block 7 is connected to the melt through hole 81, thereby improving the sealing effect between the melt flow channel 71 and the melt through hole 81.

[0035] Continue to refer to Figure 1 , Figure 2 and Figure 4The heating medium mechanism 40 includes a heating medium inlet pipe 11 and a heating medium return pipe 12 communicating with the heating chamber 103, as well as a plurality of electric heating rods 13 passing through the housing 10. The plurality of electric heating rods 13 are arranged to avoid the distribution mechanism 20 and the plurality of spinnerets 30. The heating medium inlet pipe 11 supplies heating medium into the heating chamber 103, and the heating medium return pipe 12 supplies heating medium from the heating chamber 103 out of the spinning box. Depending on the spinning process requirements of different monofilament varieties, different heating methods are used in the spinning box. In this embodiment, the spinning box uses either gas phase heating or liquid phase heating. When gas phase heating is used, the heat medium is a gas phase heat medium. To improve the sealing effect, a through-hole sealing gasket is configured between the inlet of the heat medium inlet pipe 11 and the heat medium return pipe 12 and the flange. The gas phase heat medium is circulated and input to heat the heating chamber, so that the melt conveyed in the heating chamber remains in a molten state. When liquid phase heating is used, the heat medium is a liquid phase heat medium. A blind-face sealing gasket is configured between the inlet of the heat medium inlet pipe 11 and the heat medium return pipe 12 and the flange. Liquid phase heat medium is injected into the heating chamber through the heat medium inlet pipe 11. Multiple electric heating rods 13 operate according to the current temperature in the heating chamber 103 to control the temperature of the liquid phase heat medium in the heating chamber 103 within a suitable range, and heat and keep the melt conveyed in the heating chamber 103 warm, so as to prevent the melt from cooling and solidifying due to temperature drop. This application incorporates heating according to process requirements, enabling the spinning box to be suitable for the production of different types of monofilaments, thereby improving equipment utilization, reducing production costs, and minimizing resource waste.

[0036] The housing 10 is also equipped with a safety valve 14, an electric contact pressure gauge 15, and a temperature sensor 16. The temperature sensor 16 is used to detect the temperature inside the heating chamber 103 in real time, so that the heat medium mechanism can adjust the delivery of the gaseous heat medium or adjust the operation of multiple electric heating rods 13 according to the real-time temperature. The electric contact pressure gauge 15 is used to monitor the pressure inside the heating chamber 103 in real time, and the electric contact pressure gauge 15 is connected to the safety valve 14. When the pressure inside the heating chamber 103 is too high, the safety valve 14 releases pressure to ensure the normal operation of the spinning box.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A spinning box for monofilament production, characterized in that, include: The outer shell of the box has a heating chamber inside; The dispensing mechanism includes a main dispensing head and a plurality of metering components mounted on the housing, and a plurality of dispensing passages connecting the main dispensing head and the plurality of metering components. Each metering component is connected to one of the dispensing passages. The main dispensing head has a main inlet connected to an extrusion device and is configured to uniformly distribute the melt extruded by the extrusion device to the plurality of metering components through the plurality of dispensing passages. Multiple spinnerets are provided, each corresponding to one of the multiple metering components. Each spinneret includes multiple spinnerets for molten material output. The multiple spinnerets of each spinneret are connected to the corresponding metering component. Each metering component is configured to uniformly distribute the molten material transported by the distribution path to the multiple spinnerets. as well as The heat transfer mechanism includes a heat transfer inlet pipe and a heat transfer return pipe communicating with the heating chamber, as well as a plurality of electric heating rods passing through the housing. The plurality of electric heating rods are arranged to avoid the distribution mechanism and the plurality of spinnerets.

2. The spinning box according to claim 1, characterized in that, The housing includes an upper housing and a lower housing that are arranged opposite to each other and are connected to each other, and the heating cavity is formed between the upper housing and the lower housing.

3. The spinning box according to claim 1, characterized in that, The main distribution head includes a union flange mounted on the housing and a distribution connector located in the heating chamber. The main inlet is opened on the union flange, and the distribution connector has multiple distribution outlets connected to the main inlet. Each distribution passage is connected to one of the distribution outlets.

4. The spinning box according to claim 3, characterized in that, Each of the aforementioned distribution channels includes a distribution pipe, a static mixer, and a refrigeration valve assembly. The distribution pipe is sequentially connected to the distribution outlet, the static mixer, the refrigeration valve assembly, and the metering component. The inner diameters and lengths of the distribution pipes in the multiple distribution channels are consistent with each other.

5. The spinning box according to claim 4, characterized in that, Each metering component includes a metering inlet and multiple metering outlets connected to the metering inlet. The metering inlet is connected to the main distribution head through a corresponding distribution pipe. The number of metering outlets is consistent with the number of spinnerets in the corresponding spinneret unit. Each spinneret is connected to a metering outlet through a melt tube. The inner diameter and length of the multiple melt tubes connected to each metering component are consistent with each other.

6. The spinning box according to claim 5, characterized in that, Each of the aforementioned spinnerets includes a component base, a plurality of rectangular blocks arranged within the component base, and a plurality of feed connectors mounted on the component base. The component base passes through the housing and has a rectangular cavity inside capable of accommodating the plurality of rectangular blocks. The plurality of feed connectors are spaced apart on the component base along the front-to-back direction and communicate with the rectangular cavity. Each feed connector is connected to one of the aforementioned melt tubes. The plurality of spinnerets are sequentially formed at the bottom of the component base along the front-to-back direction and communicate with the rectangular cavity. Each feed connector corresponds to one of the aforementioned spinnerets. Each of the aforementioned rectangular blocks has a melt flow channel connecting one of the aforementioned feed connectors and one of the aforementioned spinnerets.

7. The spinning box according to claim 6, characterized in that, Each of the rectangular blocks is provided with a clamping device, and each clamping device is configured to clamp the corresponding rectangular block against the corresponding feed connector.

8. The spinning box according to claim 1, characterized in that, The enclosure is also equipped with a safety valve, an electrical contact pressure gauge, and a temperature sensor.

Images