Die head structure for extruding melt material, melt material extrusion structure and splitter plate

Abstract

The utility model provides a die head structure for extruding a melt material, a melt material extrusion structure and a splitter plate. The die head structure for extruding the melt material comprises the splitter plate, a die head and a machine head, the die head is fixed to the machine head, and the splitter plate is fixed between the die head and the machine head; a discharging cavity is formed in the machine head, a die head hole is formed in the die head, a plurality of flow dividing holes are formed in the flow dividing plate, and the flow dividing holes have the same or different hole diameters and correspond to the die head hole in position, so that the discharging cavity, the flow dividing holes and the die head hole are sequentially communicated; the flow dividing holes with the same or different hole diameters are matched with one another, so that the flow speeds of melt materials flowing through the edge area and the middle area of the flow dividing plate are the same, pressure is evenly distributed when the melt materials pass through the die head holes, and material strips with the even diameters are formed through extrusion. And the uniformity of material particles after granulation is ensured, the product quality is improved, the cost increase is little, the die head does not need to be opened again, the resource waste is reduced, and the practicability and the economical efficiency are very high.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a die head structure for extruding a molten material, a molten material extrusion structure and a splitter plate. Background Art

[0002] In industrial applications, twin-screw extruder is a widely used equipment. After the raw materials are melted and mixed, they are extruded and pelletized through the twin-screw extruder. The role of the die head is crucial. It is responsible for shaping the molten material for easy pelletizing. The molten material is in an inverted "8" shape close to the shape of a barrel at the outlet of the twin-screw extruder. When it passes through the die discharge cavity and reaches the die position, the melt forms a horizontal long strip. Due to the characteristics of non-Newtonian fluids, the flow rate of the melt at various lateral positions will change. The closer to the edge of the die head, the slower the flow rate of the melt material, and the closer to the middle position, the faster the flow rate of the melt material, resulting in uneven pressure distribution of the melt at the die head inlet, with high pressure in the center and low pressure on both sides. Most traditional die designs in the engineering plastics industry adopt a layout in which the hole diameters are consistent and the die holes are distributed on one or two straight lines. The uneven pressure distribution at the die inlet causes the diameters of the material strips extruded from the die to vary greatly when the pelletizer pulls at the same speed, resulting in unevenly thick and thin material strips, which affects the uniformity of subsequent pelletizing and, in turn, the quality of the product.

[0003] To address this problem, some process technicians are currently trying to improve the die, such as adjusting the aperture of the die outlet to form a gradient aperture distribution, or changing the depth difference of the die hole in the material flow direction to form a gradient structure. However, these methods face many challenges in practical applications, such as difficulty in mastering the aperture gradient rate, poor material adaptability, and increased costs due to reprocessing the die. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a die head structure for extruding a molten material, a molten material extrusion structure, and a diverter plate to solve or alleviate the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A die structure for extruding a molten material, comprising: a diverter plate, a die head, and a die head, wherein the die head is fixedly mounted on the die head, and the diverter plate is fixedly mounted between the die head and the die head;

[0007] The die head is provided with a discharge cavity inside for accommodating the molten material to be extruded, the die head is provided with a die hole, and the diverter plate is provided with N diverter holes which are arranged through and correspond to the positions of the die holes, so that the discharge cavity, the diverter holes and the die hole are connected in sequence and constitute an extrusion channel for the molten material;

[0008] The N diverter holes include N1 first diverter holes and N2 second diverter holes, the N1 first diverter holes are arranged in the middle area of ​​the diverter plate, and the N2 second diverter holes are arranged on the left and right sides of the N1 first diverter holes, and N, N1, and N2 are all integers, and N=N1+N2, N1>=1, and N2>=2;

[0009] The aperture of the second diversion hole is larger than that of the first diversion hole, so that the flow rate of the molten material flowing through the N2 second diversion holes is the same as the flow rate of the molten material flowing through the N1 first diversion holes, and the pressure of the molten material with the same flow rate is evenly distributed when passing through the die hole, so that the molten material extruded through the die hole forms material strips with uniform diameter.

[0010] Optionally, the diverter plate has a feed side end face and a discharge side end face, the feed side end face is connected to the machine head, and the discharge side end face is connected to the die head.

[0011] Optionally, the feed side end surface is provided with a positioning slot, and the positioning slot is used to position the machine head and the diverter plate.

[0012] Optionally, a first constant pressure groove is opened in the middle of the bottom of the positioning slot, and the first constant pressure groove is connected to the two adjacent first diversion holes and / or second diversion holes to balance the pressure between the first diversion holes and / or the second diversion holes.

[0013] Optionally, a positioning step is provided on the end surface of the discharge side, and the positioning step is used to position the diverter plate and the die head.

[0014] Optionally, a second constant pressure groove is opened in the middle of the positioning step, and the second constant pressure groove corresponds to the position of the die hole to connect the die holes and balance the pressure between the die holes.

[0015] Optionally, the diverter plate is penetrated by a plurality of first positioning holes distributed along the circumferential direction, the die head is provided with a second positioning hole, and the machine head is provided with an assembly hole, the first positioning hole corresponds to the position of the second positioning hole and the assembly hole, and the die head and the diverter plate are fixedly mounted on the assembly holes by bolts passing through the second positioning hole and the first positioning hole in sequence.

[0016] Optionally, the first flow diversion hole and the second flow diversion hole are both opened in the middle area of ​​the bottom of the first constant pressure tank and pass through the diversion plate.

[0017] Optionally, the first diverter holes and / or the second diverter holes are arranged in a straight line with equal center distance.

[0018] Optionally, the first diverter hole and / or the second diverter hole is a circular through hole.

[0019] Optionally, the diameter of the first positioning hole is 9 mm.

[0020] Optionally, the diverter plate is in the shape of a rectangular parallelepiped as a whole.

[0021] Optionally, the number of the diverter holes N=14, the number of the first diverter holes is 8 and they are arranged in the middle area of ​​the diverter plate, and the number of the second diverter holes is 6 and they are arranged 3 on the left and right sides of the first diverter holes, respectively.

[0022] Optionally, the aperture of the first diversion hole is 10 mm, and the aperture of the second diversion hole is 14 mm.

[0023] Optionally, the diverter plate is made of a steel plate.

[0024] Optionally, the positioning slot has a width of 32 mm and a depth of 3 mm.

[0025] Optionally, the first constant pressure groove has a width of 16 mm and a depth of 3 mm.

[0026] Optionally, the positioning step has a width of 32 mm and a height of 2.9 mm.

[0027] Optionally, the second constant pressure groove has a width of 16 mm and a depth of 2 mm.

[0028] Optionally, the first constant pressure groove and the second constant pressure groove are both rounded rectangular structures.

[0029] A die structure for extruding a molten material comprises: a diverter plate, a die head, and a machine head, wherein the die head is fixedly mounted on the machine head, and the diverter plate is fixedly mounted between the die head and the machine head; a discharge cavity is arranged inside the machine head for accommodating the molten material to be extruded, a die hole is provided on the die head, and a plurality of diverter holes are provided through the diverter plate, wherein the plurality of diverter holes have the same or different apertures and correspond to the positions of the die hole, and the diverter holes with the same or different apertures cooperate with each other so that the flow rate of the molten material flowing through the edge area of ​​the diverter plate is the same as the flow rate of the molten material flowing through the middle area of ​​the diverter plate, and the pressure of the molten material with the same flow rate is evenly distributed when passing through the die hole, so that the molten material extruded through the die hole forms material strips with uniform diameter.

[0030] A molten material extrusion structure comprises a diverter plate and a die head, wherein the diverter plate is fixedly mounted on the die head, a die head hole is provided on the die head, a plurality of diverter holes are provided through the diverter plate, the diverter holes have the same or different apertures and correspond to the positions of the die head holes, and the diverter holes with the same or different apertures cooperate with each other so that the flow rate of the molten material flowing through the edge area of ​​the diverter plate is the same as the flow rate of the molten material flowing through the middle area of ​​the diverter plate.

[0031] A diverter plate, characterized in that the diverter plate is penetrated by N diverter holes, the N diverter holes include N1 first diverter holes and N2 second diverter holes, the N1 first diverter holes are arranged in the middle area of ​​the diverter plate, and the N2 second diverter holes are arranged on the left and right sides of the N1 first diverter holes, the N, N1, and N2 are all integers, and N=N1+N2, N1>=1, N2>=2; the aperture of the second diverter hole is larger than that of the first diverter hole, so that the flow rate of the material flowing through the N2 second diverter holes is the same as the flow rate of the material flowing through the N1 first diverter holes.

[0032] In the present application, a die structure for extruding a molten material is provided, which includes: a diverter plate, a die head, and a machine head, wherein the die head is fixedly mounted on the machine head, and the diverter plate is fixedly mounted between the die head and the machine head; a discharge cavity is arranged inside the machine head for accommodating the molten material to be extruded, a die head hole is arranged on the die head, and N diverter holes are arranged through the diverter plate and correspond to the positions of the die head holes, so that the discharge cavity, the diverter holes and the die head holes are connected in sequence and constitute an extrusion channel for the molten material; the N diverter holes include N1 first diverter holes and N2 second diverter holes, the N1 first diverter holes are arranged in the middle area of ​​the diverter plate, and the N2 second diverter holes are arranged in the middle area of ​​the diverter plate. The diverter holes are arranged on the left and right sides of the N1 first diverter holes, and N, N1, and N2 are all integers, and N=N1+N2, N1>=1, and N2>=2; the aperture of the second diverter hole is larger than that of the first diverter hole, so that the flow rate of the molten material flowing through the N2 second diverter holes is the same as the flow rate of the molten material flowing through the N1 first diverter holes, and the pressure of the molten material with the same flow rate is evenly distributed when passing through the die hole, so that the molten material extruded through the die hole forms material strips with uniform diameter, thereby ensuring the uniformity of the pellets after pelletizing and improving the product quality. Not only is the cost increase very small, but there is no need to reopen the die head, which reduces resource waste and has high practicality and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0034] Figure 1 is a schematic diagram of the structure of a diverter plate according to an embodiment of the present application;

[0035] Figure 2 is a schematic diagram of the structure of a diverter plate according to an embodiment of the present application;

[0036] Figure 3 is a cross-sectional view of a diverter plate according to an embodiment of the present application;

[0037] Figure 4 It is a schematic diagram of the structure of the die head according to the embodiment of the present application;

[0038] Figure 5 It is a schematic diagram of the structure of the die head according to the embodiment of the present application;

[0039] Figure 6 is a cross-sectional view of a die head according to an embodiment of the present application;

[0040] Figure 7 It is a structural schematic diagram of the head according to an embodiment of the present application;

[0041] Figure 8 It is a structural schematic diagram of the head according to an embodiment of the present application;

[0042] Fig. 9 is a cross-sectional view of the nose according to an embodiment of the present application;

[0043] Among them, the numbers in the figure indicate: 1. diverter plate; 11. feed side end face; 111. positioning slot; 112. first constant pressure groove; 12. discharge side end face; 121. positioning step; 122. second constant pressure groove; 13. first diverter hole; 14. second diverter hole; 15. first positioning hole; 2. die head; 21 die head hole; 22. second positioning hole; 3. machine head; 31. discharge cavity; 32. assembly hole. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the solution of the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0045] It should be noted that the term "including" in the specification and claims of this application and the above-mentioned drawings is intended to cover non-exclusive inclusions. In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated components to have specific orientations. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] Figure 1 is a schematic diagram of the structure of a diverter plate according to an embodiment of the present application; Figure 2 is a schematic diagram of the structure of a diverter plate according to an embodiment of the present application; Figure 3 is a cross-sectional view of a diverter plate according to an embodiment of the present application; Figure 4 It is a schematic diagram of the structure of the die head according to the embodiment of the present application; Figure 5 It is a schematic diagram of the structure of the die head according to the embodiment of the present application; Figure 6 is a cross-sectional view of a die head according to an embodiment of the present application; Figure 7 It is a structural schematic diagram of the head according to an embodiment of the present application; Figure 8 It is a structural schematic diagram of the head according to an embodiment of the present application; Fig. 9 is a cross-sectional view of the nose according to an embodiment of the present application;

[0048] like Figures 1 to 9As shown, the present application provides a die structure for extruding a molten material, which includes: a diverter plate 1, a die 2, and a head 3, wherein the die 2 is fixedly mounted on the head 3, and the diverter plate 1 is fixedly mounted between the die 2 and the head 3; a discharge cavity 31 is arranged inside the head 3 for accommodating the molten material to be extruded, a die hole 21 is provided on the die 2, and N diverter holes are provided through the diverter plate 1, and correspond to the positions of the die hole 21, so that the discharge cavity 31, the diverter holes and the die hole 21 are connected in sequence, and constitute an extrusion channel for the molten material; the N diverter holes include N1 first diverter holes 13 and N2 second diverter holes 14, and the N1 first diverter holes 13 are arranged in the middle area of ​​the diverter plate 1, The N2 second diverter holes 14 are arranged on the left and right sides of the N1 first diverter holes 13, and N, N1, and N2 are all integers, and N=N1+N2, N1>=1, and N2>=2; the aperture of the second diverter hole 14 is larger than that of the first diverter hole 13, so that the flow rate of the molten material flowing through the N2 second diverter holes 14 is the same as the flow rate of the molten material flowing through the N1 first diverter holes 13, and the pressure of the molten material with the same flow rate is evenly distributed when passing through the die hole 21, so that the molten material extruded through the die hole 21 forms material strips with uniform diameter, thereby ensuring the uniformity of the pellets after pelletizing and improving the product quality. Not only is the cost increase very small, but there is no need to reopen the die 2, reducing resource waste, and having high practicality and economy.

[0049] In this embodiment, since the molten material is in an inverted "8" shape close to the shape of the extruder barrel at the outlet of the twin-screw extruder, when it passes through the discharge cavity 31 of the die head 3 and reaches the position of the die head 2, the melt forms a horizontal long strip. Due to the characteristics of non-Newtonian fluids, the flow rate of the melt at various lateral positions will change. The closer to the edge of the die head 2, the slower the flow rate of the molten material, and the closer to the middle position, the faster the flow rate of the molten material, resulting in uneven pressure distribution of the melt at the inlet of the die head 2, with high pressure in the center and low pressure on both sides. If a die head 2 with a uniform aperture is used, the uneven pressure distribution at the inlet of the die head 2 will result in large differences in the diameter of the material strips discharged through the die head hole 21, forming unevenly thick and thin material strips. This embodiment ensures that the flow rate of the molten material flowing through each diverter hole is the same by designing N1 first diverter holes 13 and N2 second diverter holes 14, and making the aperture of the second diverter hole 14 larger than the first diverter hole 13, so that the pressure of the molten material at the die head hole 21 is evenly distributed, thereby ensuring that the molten material extruded from the die head hole 21 can form a material strip with uniform diameter. This uniform material strip can produce uniform pellets in the subsequent pelletizing process, thereby significantly improving the quality of the product; and this design of the diverter plate structure does not require the die head 2 to be reopened, and the uniform distribution of the flow rate of the molten material can be achieved by simply adjusting the number and aperture of the diverter holes on the diverter plate. Compared with the traditional method, not only the cost increase is minimal, but also the waste of resources is greatly reduced.

[0050] Optionally, the diverter plate 1 has a feed side end face 11 and a discharge side end face 12 , the feed side end face 11 is connected to the die head 3 , and the discharge side end face 12 is connected to the die head 2 .

[0051] This structure makes the entire die structure have a clear connection interface during assembly and disassembly, which helps to simplify the installation and disassembly process and reduce the possibility of installation errors. In addition, the rationality of the design of the diverter plate 1 as the transition part for the material to flow from the die head 3 to the die head 2 directly affects the smoothness of the material flow. Through the clear design of the feed side end face 11 and the discharge side end face 12, it can ensure that the material flows more smoothly inside the diverter plate 1, reducing blockage and uneven flow. In addition, the feed side end face 11 is connected to the die head 3, and the discharge side end face 12 is connected to the die head 2. Such a design helps to form a more reasonable pressure distribution inside the diverter plate 1. By adjusting the size, shape and hole position design of the diverter plate 1, the pressure distribution of the molten material in the die hole 21 can be further optimized, thereby ensuring that the extruded material strips have a more uniform diameter. Furthermore, since the diverter plate 1 has a clear feed side end face 11 and a discharge side end face 12, when the diverter plate 1 fails or needs to be cleaned, it can be easily removed from between the machine head 3 and the die head 2 for maintenance. This design improves the maintainability of the equipment and reduces maintenance costs.

[0052] Optionally, the feed side end surface 11 is provided with a positioning slot 111 , and the positioning slot 111 is used to position the die head 3 and the diverter plate 1 .

[0053] This design provides a clear reference point for the assembly of the die head 3 and the manifold 1. During the assembly process, the corresponding part on the die head 3 can be accurately embedded in the positioning slot 111, ensuring that the relative position between the die head 3 and the manifold 1 is accurate, which helps to improve the assembly accuracy of the entire die head structure and ensure that the molten material can flow smoothly according to the preset flow channel; in addition, due to the presence of the positioning slot 111, the assembly process of the die head 3 and the manifold 1 becomes simpler and more intuitive. The corresponding part on the die head 3 is aligned with the positioning slot 111 and embedded to complete the connection between the two, which simplifies the assembly steps, reduces the difficulty of operation, and improves the assembly efficiency; furthermore, through the precise positioning of the positioning slot 111, the die head 3 and the manifold 1 are precisely positioned. The connection between them is tighter and firmer, which helps to reduce the shaking or misalignment that may occur during the extrusion process, thereby enhancing the stability of the entire die head structure. The stable structure is conducive to ensuring the stability and continuity of the molten material during the extrusion process; and, when it is necessary to remove or replace the diverter plate 1, the presence of the positioning slot 111 makes the disassembly process also simple and quick. It is only necessary to separate the head 3 and the diverter plate 1 according to the guidance of the positioning slot 111, thereby reducing the risk of equipment damage caused by improper disassembly and reducing maintenance costs; finally, because the positioning slot 111 ensures the precise connection between the head 3 and the diverter plate 1, the risk of equipment failure or accidents caused by loose connection is reduced, which helps to improve the safety of the production process.

[0054] Optionally, a first constant pressure groove 112 is opened in the middle of the bottom of the positioning slot 111, and the first constant pressure groove 112 connects the two adjacent first diversion holes 13 and / or second diversion holes 14 to balance the pressure between the first diversion holes 13 and / or the second diversion holes 14.

[0055] In this embodiment, the presence of the first constant pressure groove 112 can balance the pressure between the first diversion hole 13 and / or the second diversion hole 14. When the molten material flows through the diversion plate 1, due to the uneven flow of the molten material or the influence of external conditions, there may be differences in the pressure between different diversion holes. The design of the first constant pressure groove 112 allows the material in the diversion hole with higher pressure to flow to the diversion hole with lower pressure, thereby achieving pressure balance. The balanced pressure distribution helps to ensure that the molten material flows evenly in the die head hole 21, thereby obtaining material strips with more uniform diameters. In addition, since the first constant pressure groove 112 can balance the pressure between the diversion holes, the molten material maintains a stable flow state during the extrusion process. This helps to reduce problems such as uneven diameter and rough surface of extruded material strips caused by uneven pressure, thereby improving the overall quality of the product; in addition, when the pressure between the diverter holes is balanced, the material flows more smoothly in the diverter plate 1, reducing the risk of material blockage due to uneven pressure, helping to improve production efficiency and reduce downtime and maintenance costs during the production process; furthermore, by balancing the pressure between the diverter holes, the design of the first constant pressure groove 112 helps to reduce the stress concentration phenomenon on the structure of the diverter plate 1 caused by uneven pressure, helping to enhance the structural reliability of the diverter plate 1 and extend its service life.

[0056] Optionally, the discharge side end surface 12 is provided with a positioning step 121 , and the positioning step 121 is used to position the diverter plate 1 and the die head 2 .

[0057] In the present embodiment, the positioning step 121 provides a clear reference point for the assembly of the manifold 1 and the die head 2. By ensuring that the positioning step 121 is precisely matched with the corresponding part on the die head 2, the assembly accuracy between the manifold 1 and the die head 2 is greatly improved, which helps to ensure that the flow path of the molten material in the die head 2 is unobstructed, thereby improving the stability and efficiency of the extrusion process; and the design of the positioning step 121 makes the assembly process of the manifold 1 and the die head 2 simpler and more intuitive. The positioning step 121 is aligned with the corresponding part on the die head 2, and then the two are fixed, which reduces the complex steps and potential errors in the assembly process and improves the assembly efficiency; in addition, the precise matching of the positioning step 121 enhances the connection stability between the manifold 1 and the die head 2, helps to reduce the shaking or misalignment that may occur during the extrusion process, thereby ensuring that the molten material can flow smoothly according to the preset flow path; furthermore, since the positioning step 121 improves the connection stability between the manifold 1 and the die head 2, the risk of equipment failure caused by loose connection is reduced, the repair and replacement costs required due to equipment failure are reduced, and the overall maintenance cost is reduced.

[0058] Optionally, a second constant pressure groove 122 is opened in the middle of the positioning step 121 , and the second constant pressure groove 122 corresponds to the position of the die hole 21 to connect with the die hole 21 and balance the pressure between the die holes 21 .

[0059] In this embodiment, during the extrusion process, the design of the second constant pressure groove 122 allows the material in the die hole 21 with higher pressure to flow to the die hole 21 with lower pressure, thereby achieving pressure balance between the die holes 21. This balanced pressure distribution helps to ensure that the material is evenly extruded in each die hole 21, thereby improving the quality and consistency of the extruded product; in addition, because the second constant pressure groove 122 can balance the pressure between the die holes 21, the material maintains a stable flow state during the extrusion process, which helps to reduce extrusion product defects caused by uneven pressure, thereby improving the overall quality of the product; furthermore, the balanced die hole 21 pressure helps to ensure that the material maintains a stable flow speed and extrusion volume during the extrusion process, which helps to improve production efficiency and output, while reducing waste and rework caused by product defects.

[0060] Optionally, the diverter plate 1 is provided with a plurality of first positioning holes 15 distributed along the circumferential direction, the die head 2 is provided with a second positioning hole 22, and the machine head 3 is provided with an assembly hole 32. The first positioning hole 15 corresponds to the positions of the second positioning hole 22 and the assembly hole 32. The die head 2 and the diverter plate 1 are fixedly mounted on the assembly hole 32 by bolts passing through the second positioning hole 22 and the first positioning hole 15 in sequence.

[0061] In this embodiment, a plurality of first positioning holes 15 distributed along the circumferential direction correspond to the assembly holes 32 on the machine head 3 and the second positioning holes 22 on the die head 2 to ensure the accurate installation position of the diverter plate 1 between the machine head 3 and the die head 2. The bolt fixing method further enhances the stability and firmness of the installation, and effectively prevents the diverter plate 1 from shifting or loosening during use. Moreover, the corresponding design of the first positioning holes 15, the second positioning holes 22 and the assembly holes 32 makes the installation process simple and clear. The bolts are passed through the corresponding holes in turn and then fixed. This design reduces the complex steps and potential errors in the installation process and improves the installation efficiency. Furthermore, the plurality of first positioning holes 15 and the second The corresponding design of the positioning holes 22 and the assembly holes 32 improves the installation accuracy between the diverter plate 1 and the machine head 3 and the die head 2. The accurate installation position helps to ensure the smooth flow of the molten material in the flow channel, thereby improving product quality and production efficiency; in addition, the bolt fixing method makes the connection between the diverter plate 1 and the machine head 3 and the die head 2 more firm and reliable, which helps to improve the overall performance and service life of the equipment and reduce the risk of equipment failure due to loose connection; finally, when the diverter plate 1 needs to be repaired or replaced, the bolt fixing method makes the disassembly process just as simple and quick. By removing the bolts, the diverter plate 1 can be taken out from between the machine head 3 and the die head 2. This design reduces the difficulty and cost of repair and replacement.

[0062] Optionally, the first diverter hole 13 and the second diverter hole 14 are both opened in the middle area of ​​the bottom of the first constant pressure groove 112 and pass through the diverter plate 1 .

[0063] In this embodiment, since the first diverter hole 13 and the second diverter hole 14 are located in the middle area of ​​the bottom of the first constant pressure groove 112, they can be directly affected by the pressure in the constant pressure groove, which helps to form a more uniform and stable pressure distribution between the diverter holes, ensuring that the melt material can maintain a constant flow rate and flow rate during the diversion process; in addition, by optimizing the pressure distribution, this design can improve the stability of the extrusion process, and the constant flow rate and flow rate help reduce fluctuations and unstable factors in the extrusion process, thereby obtaining a more uniform and consistent extruded product; in addition, since the diverter hole is located in the middle area of ​​the bottom of the constant pressure groove and is balanced by the pressure in the constant pressure groove, It helps to reduce the risk of material clogging in the diverter hole. The constant pressure distribution allows the material to pass through the diverter hole smoothly, reducing the possibility of production interruption and equipment damage due to clogging. Furthermore, since this design can improve extrusion stability and reduce the risk of clogging, it helps to improve the quality of the extruded product. The uniform flow rate and flow rate can ensure that the extruded product has a more consistent size, reducing the defective and scrap rates. Finally, since the diverter hole is located in the middle area at the bottom of the constant pressure tank, this design also helps to simplify maintenance operations. When the diverter plate 1 needs to be cleaned or replaced, the diverter hole can be more conveniently accessed, thereby reducing the complexity and difficulty of maintenance.

[0064] Optionally, the first diverter holes 13 and / or the second diverter holes 14 are arranged in a straight line with equal center distance.

[0065] In this embodiment, the diverter holes arranged in a straight line with equal center distances ensure that the molten material is evenly distributed on the diverter plate 1. Since the distance between each diverter hole is equal, the material can maintain a consistent flow rate and flow rate when passing through, thereby reducing the defects of the extruded product caused by uneven material distribution; and the diverter holes arranged in a straight line with equal center distances make the design and manufacturing process of the diverter plate 1 simpler. Through standardized design and manufacturing processes, a diverter plate 1 that meets the requirements can be quickly produced, thereby improving production efficiency. In addition, since the diverter holes are arranged in a straight line with equal center distances, this makes the diverter plate 1 easier to manufacture between the die head 3 and the mold. The installation and debugging process on the head 2 is more convenient, and the position of the diverter hole can be quickly determined, and the corresponding installation and adjustment can be carried out; secondly, since the material is evenly distributed on the diverter plate 1 and the flow rate and flow rate of each diverter hole are consistent, this helps to improve production efficiency and output, and the extrusion process is more stable, reducing production interruptions and scrap rates caused by uneven material distribution; finally, the design of diverter holes arranged in a straight line with equal center distances makes it easier to clean and maintain the diverter plate 1. Since the diverter holes are arranged in an orderly manner, the materials and impurities remaining in the diverter holes can be more effectively removed, thereby extending the service life of the diverter plate 1.

[0066] Optionally, the center distance between the first diverter hole 13 and / or the second diverter hole 14 is 16 mm.

[0067] Optionally, the first diverter hole 13 and / or the second diverter hole 14 is a circular through hole.

[0068] In this embodiment, the circular through hole has the smallest flow resistance, because the edge of the circular cross section is smooth, without sharp angles or protruding parts, which can reduce the friction and resistance of the material during the flow process, help to ensure that the molten material flows smoothly in the diverter hole, and improve the stability and efficiency of the extrusion process; and the circular through hole has a simple and symmetrical shape, which makes the flow of the material in all directions more uniform, and helps to ensure that the molten material is evenly distributed on the diverter plate 1, thereby reducing the defects of the extruded product caused by uneven material distribution; in addition, the circular through hole is one of the most common hole types in mechanical processing, and the processing The manufacturing process is relatively simple, and circular through holes can be quickly processed using standard drilling or milling tools, thereby reducing manufacturing costs and improving production efficiency. Furthermore, the design of the circular through holes can enhance the structural stability of the diverter plate 1. Since the circular cross-section has uniform stress-bearing properties, the diverter plate 1 can be uniformly stressed when subjected to external forces, thereby reducing stress concentration and deformation. Finally, the circular through holes have a simple shape without complex structures or dead corners, which makes it easier to clean and maintain the diverter plate 1, and can easily remove materials and impurities remaining in the diverter holes, thereby keeping the diverter plate 1 clean and unobstructed.

[0069] Optionally, the diameter of the first positioning hole 15 is 9 mm.

[0070] In this embodiment, the 9mm hole diameter provides enough space for the bolt, so that the bolt can pass through the first positioning hole 15 tightly and connect with the assembly hole 32 on the head 3 and the die head 2, ensuring that the connection between the diverter plate 1 and the head 3 and the die head 2 is more firm and reliable, and enhancing the connection strength of the overall structure; and the appropriate hole diameter size helps to ensure that the bolt can accurately align with the first positioning hole 15 and the assembly hole 32 during the installation process, reducing the installation error, and the high-precision installation helps to improve the overall performance of the extrusion equipment and ensure that the material can flow according to the predetermined path and flow rate during the extrusion process; in addition, the 9mm hole diameter is one of the common bolt sizes. First, this means that standard bolts can be used for installation without the need to customize bolts of special sizes, which enhances the compatibility and versatility of the manifold 1 and allows it to be used in different equipment and environments; secondly, the appropriate aperture size makes it easier to operate the bolts during installation and removal, and the bolts can be conveniently tightened or loosened to install, adjust or replace the manifold 1, and it is also convenient for cleaning and maintenance; finally, the 9mm aperture design allows standard bolts and tools to be used for installation and maintenance, reducing costs. At the same time, due to the improved installation accuracy and connection strength, equipment failures and maintenance costs caused by improper installation or loose connections are reduced.

[0071] Optionally, the diverter plate 1 is in a rectangular shape as a whole.

[0072] In this embodiment, the rectangular design makes the diverter plate 1 have higher structural stability, and its length and width are in a moderate ratio, which can withstand greater pressure and impact force and is not easy to deform or damage, which is crucial to ensure the uniformity and stability of the material during the diversion process; and the rectangular design makes it easier to install and position the diverter plate 1 on the machine head 3 and the die head 2. Due to its regular shape, the diverter plate 1 can be easily placed in a predetermined position and quickly fixed and adjusted, which not only improves the installation efficiency, but also reduces the risk of installation errors; in addition, the rectangular design The body design makes the cleaning and maintenance of the diverter plate 1 easier, and its regular shape enables access to various parts of the diverter plate 1 for thorough cleaning and inspection. The rectangular design also facilitates the use of various cleaning tools and equipment, thereby improving cleaning efficiency. Finally, the rectangular design makes the diverter plate 1 highly adaptable. Whether in large or small extrusion equipment, the rectangular diverter plate 1 can be adjusted and optimized as needed to meet different production needs. Its simple structure and shape also make the diverter plate 1 easier to implement and control during the manufacturing process.

[0073] Optionally, the number of the diverter holes N=14, and the number of the first diverter holes 13 is N 1＝ 8. The number of the second diversion holes 14 is N, which is arranged in the middle area of ​​the diversion plate 1. 2＝ 6, 3 on each side of the first diversion hole 13.

[0074] In the present embodiment, this distribution method ensures the uniform distribution of the material on the entire diverter plate 1, which helps to improve the quality consistency of the extruded product and reduce defects; in addition, the total number of 14 diverter holes allows more material flows to be processed simultaneously, thereby improving production efficiency; furthermore, the distribution design of the first diverter hole 13 and the second diverter hole 14 makes the diverter plate 1 have high flexibility and adjustability; finally, by arranging 3 second diverter holes 14 on the left and right sides of the first diverter hole 13, the balance and stability of material distribution can be achieved, which helps to reduce the stress concentration and deformation caused by uneven material distribution, extend the service life of the diverter plate 1, and improve the stability and reliability of the entire extrusion system; in actual production, the aperture and distribution of the diverter holes can be adjusted according to the characteristics of different materials to meet the processing requirements of different materials.

[0075] Optionally, the first diverter hole 13 has a diameter of 10 mm, and the second diverter hole 14 has a diameter of 14 mm.

[0076] In this embodiment, by setting diverter holes with different apertures, the flow distribution of the material on the diverter plate 1 can be accurately controlled. The aperture of the second diverter hole 14 is 14 mm, which is larger than the aperture of the first diverter hole 13 by 10 mm, so that the flow rate of the molten material flowing through the two holes can be equalized. This design allows the flow rate of the molten material output from the two diverter holes to be consistent without the need for additional flow rate adjustment. In addition, since the uniformity of the flow rate directly affects the fluid dynamics, especially the pressure distribution, when the molten material passes through the die hole 21 at the same flow rate, its pressure distribution in the die hole 21 will be more uniform, and uniform pressure distribution is crucial to ensuring the stable flow of the molten material in the die hole 21. Furthermore, by optimizing the aperture design of the diverter hole, the stable flow of the molten material in the die hole 21 can be ensured, thereby improving production efficiency and output. In addition, due to the uniformity of the diameter of the material strips, the scrap rate and rework rate in the production process can be reduced, further reducing costs; finally, although in this technical description, the aperture of the diverter hole is set to specific values ​​of 10mm and 14mm, this design concept can be flexibly applied to different production scenarios and material types. By adjusting the aperture size of the diverter hole, it can adapt to the flow characteristics and production requirements of different melt materials, and by combining diverter holes with different apertures, a more flexible and diversified design scheme can be created, so that the diverter plate 1 can adapt to more different production requirements and material characteristics; in actual production, the aperture of the first diverter hole 13 and / or the second diverter hole 14 can also be set according to actual production needs.

[0077] Optionally, the diverter plate 1 is made of a steel plate.

[0078] In this embodiment, the steel plate, as a metal material, has high strength and durability, can withstand greater pressure and impact, and ensures that the manifold 1 is not easily deformed or damaged during long-term, high-intensity use, which is crucial to maintaining the stability of the extrusion equipment and extending its service life; in addition, during the flow of materials, the manifold 1 will be subject to certain friction and wear, and the wear resistance of the steel plate can reduce such wear, maintain the shape and size of the manifold hole stable, and ensure the accuracy of material distribution; in addition, the steel plate has good thermal conductivity and can quickly transfer heat to the entire manifold 1. During the extrusion process, the manifold 1 will be subject to A certain amount of heat is affected, and good thermal conductivity helps to maintain uniform temperature distribution of the manifold 1, prevent local overheating or thermal stress concentration, and thus extend the service life of the manifold 1; secondly, steel plate, as a common metal material, has good machinability and manufacturability, so that the manifold 1 can be accurately processed and manufactured according to specific needs to ensure that parameters such as the position, number and aperture of the manifold holes meet the design requirements; finally, steel plate is a recyclable material with good environmental performance. After the service life of the manifold 1 ends, it can be recycled and reused to reduce the generation of waste and reduce the negative impact on the environment.

[0079] Optionally, the positioning slot 111 has a width of 32 mm and a depth of 3 mm.

[0080] In this embodiment, the positioning slot 111 with a width of 32 mm follows the common standard size in the industry, so that the positioning plate can be compatible with other standard components or systems, improving the versatility and interchangeability of the equipment. The standardized design simplifies the installation and maintenance process of the equipment and reduces the extra work and cost caused by size mismatch. In addition, the 32 mm width provides sufficient contact area, so that the positioning slot 111 can be accurately positioned and fixed to the corresponding component or structure. This precise positioning and fixing helps to ensure the stability and accuracy of the entire extruder die head structure, thereby improving production efficiency and product quality. Furthermore, the larger contact area and the appropriate 3 mm depth allow the positioning slot 111 to Withstanding greater forces and pressures and maintaining structural stability can help reduce equipment failures or production accidents caused by loose or insecure positioning, thereby improving equipment safety and reliability. In addition, the 32mm width and 3mm depth make the installation and removal of the positioning slot 111 simple and convenient, reducing the difficulty of installation and maintenance and improving work efficiency. At the same time, the appropriate slot size can ensure the smooth flow of materials in the die structure and reduce the risk of blockage and leakage. Finally, the standardized and appropriately sized positioning slot 111 design can adapt to different production needs and process requirements to meet the production needs of different products, and reduce the need for special customized parts, thereby reducing production costs and complexity.

[0081] Optionally, the first constant pressure groove 112 has a width of 16 mm and a depth of 3 mm.

[0082] In this embodiment, the design of the constant pressure groove is intended to maintain pressure balance in a specific area. The width of 16 mm ensures sufficient area, so that when the material flows through, the pressure can be dispersed more evenly, reducing the problem of poor material flow or blockage caused by uneven pressure; and the existence of the constant pressure groove can reduce the impact and fluctuation of the material during the flow, thereby enhancing the stability of the system; in addition, the width of 16 mm and the depth of 3 mm provide convenience for cleaning and maintenance, and it is easier to clean the residual materials and impurities in the constant pressure groove, reducing production interruptions caused by blockage or pollution; in addition, the design of the constant pressure groove can be combined with the arrangement of the diversion holes to further optimize the distribution of materials, ensure that the materials are more evenly distributed on the diversion plate 1, and improve production efficiency and product quality; in addition, due to the large size of the constant pressure groove, it can adapt to the needs of different material characteristics. For materials with poor fluidity, the design of the constant pressure groove can reduce the resistance during its flow, and for materials with good fluidity, it can ensure that it remains stable during the flow.

[0083] Optionally, the positioning step 121 has a width of 32 mm and a height of 2.9 mm.

[0084] In this embodiment, the width of 32 mm provides sufficient contact area, so that the positioning step 121 can be more accurately positioned with the corresponding component or structure, which helps to ensure the stability and accuracy of the entire system or equipment; and, a larger contact area means stronger support and stability, and the width and height design of the positioning step 121 can ensure that when subjected to a certain load, no displacement or deformation occurs, thereby ensuring the stability and reliability of the system or equipment; in addition, the width of 32 mm is a common size for many standard components and systems, so the positioning step 121 of this design can be compatible with a variety of components and systems, thereby improving the flexibility and scalability of the system; furthermore, the appropriate width and height design makes the installation and disassembly of the positioning step 121 simple and convenient, thereby helping to reduce installation and maintenance time and improve production efficiency; in addition, precise positioning and stability help to reduce errors caused by inaccurate positioning or movement, thereby improving product quality and production efficiency.

[0085] Optionally, the second constant pressure groove 122 has a width of 16 mm and a depth of 2 mm.

[0086] In this embodiment, the main function of the second constant pressure groove 122 is to maintain pressure balance in a specific area. The width of 16 mm ensures sufficient area to disperse and balance the pressure, which helps to reduce material flow problems caused by uneven pressure. In addition, the appropriate constant pressure groove design can optimize the flow of materials. By balancing the pressure, the resistance of the material during the flow process can be reduced, thereby improving the flow efficiency. In addition, the depth of the constant pressure groove is 2 mm, which is sufficient to allow the material to pass smoothly while preventing the material from accumulating in the groove. The accumulated material may cause blockage or affect the normal operation of the equipment. Furthermore, the width of 16 mm and the depth of 2 mm make the constant pressure groove easy to clean and maintain, and the residual material in the groove can be easily cleaned with appropriate tools to ensure the continuous and stable operation of the equipment. At the same time, the constant pressure groove of this design can adapt to many different types of materials. Due to the moderate width and depth of the groove, materials of different viscosities can pass smoothly. Finally, the constant pressure groove helps to enhance the stability of the entire system by maintaining pressure balance and optimizing material flow, which can ensure that the equipment maintains efficient and stable performance during long-term operation.

[0087] Optionally, the first constant pressure groove 112 and the second constant pressure groove 122 are both rounded rectangular structures.

[0088] In this embodiment, the design of the rounded rectangular structure adopts rounded corners at the corners, which is conducive to the smooth flow of the molten material inside it. The rounded corner design can reduce the obstacles encountered by the material during the flow process, reduce the risk of blockage, and improve the uniformity and stability of the material flow, which is particularly important for the extruder die head structure that needs to accurately control the material flow and distribution; and the design of the rounded rectangular structure not only improves the structural strength of the trough body, but also enhances the connection strength with the surrounding structure. This design can better resist the pressure from the outside world and ensure that the die head structure remains stable and reliable under long-term and high-intensity working conditions; in addition, the design of the rounded rectangular structure makes the processing process simpler and more efficient, and it is also safer and more convenient when cleaning, inspecting and repairing, which reduces the cost of processing and maintenance and improves work efficiency; finally, the rounded rectangular structure has high versatility and compatibility, so that the first constant pressure groove 112 and the second constant pressure groove 122 are highly compatible and easy to process, which improves the flexibility and scalability of the system.

[0089] The embodiment of the present application also provides a die structure for extruding a molten material, comprising: a diverter plate 1, a die 2, and a machine head 3, wherein the die 2 is fixedly mounted on the machine head 3, and the diverter plate 1 is fixedly mounted between the die 2 and the machine head 3; a discharge cavity 31 is arranged inside the machine head 3 for accommodating the molten material to be extruded, a die hole 21 is provided on the die 2, and a plurality of diverter holes are provided through the diverter plate 1, wherein the plurality of diverter holes have the same or different apertures and correspond to the positions of the die hole 21, and the diverter holes with the same or different apertures cooperate with each other so that the flow rate of the molten material flowing through the edge area of ​​the diverter plate 1 is the same as the flow rate of the molten material flowing through the middle area of ​​the diverter plate 1, and the pressure of the molten materials with the same flow rate is evenly distributed when passing through the die hole 21, so that the molten material extruded through the die hole 21 forms material strips with uniform diameter.

[0090] An embodiment of the present application also provides a molten material extrusion structure, including a die head 2 and a diverter plate 1, wherein the diverter plate 1 is fixedly mounted on the die head 2, and a die head hole 21 is provided on the die head 2, and a plurality of diverter holes are provided through the diverter plate 1, wherein the diverter holes have the same or different apertures and correspond to the positions of the die head hole 21, and the diverter holes with the same or different apertures cooperate with each other so that the flow rate of the molten material flowing through the edge area of ​​the diverter plate 1 is the same as the flow rate of the molten material flowing through the middle area of ​​the diverter plate 1.

[0091] The embodiment of the present application also provides a diverter plate, characterized in that the diverter plate 1 is penetrated by N diverter holes, the N diverter holes include N1 first diverter holes 13 and N2 second diverter holes 14, the N1 first diverter holes 13 are arranged in the middle area of ​​the diverter plate 1, and the N2 second diverter holes 14 are arranged on the left and right sides of the N1 first diverter holes 13, N, N1, and N2 are all integers, and N=N1+N2, N1>=1, N2>=2; the aperture of the second diverter hole 14 is larger than that of the first diverter hole 13, so that the flow rate of the material flowing through the N2 second diverter holes 14 is the same as the flow rate of the material flowing through the N1 first diverter holes 13.

[0092] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A die head structure for extruding a molten material, characterized in that: include: A splitter plate (1), a die head (2), and a die head (3), wherein the die head (2) is fixedly mounted on the die head (3), and the splitter plate (1) is fixedly mounted between the die head (2) and the die head (3); The die head (3) is provided with a discharge cavity (31) for accommodating the molten material to be extruded, the die head (2) is provided with a die head hole (21), and the diverter plate (1) is provided with N diverter holes which are arranged in a manner corresponding to the positions of the die head holes (21), so that the discharge cavity (31), the diverter holes and the die head hole (21) are connected in sequence and form an extrusion channel for the molten material; The N flow diversion holes include N1 first flow diversion holes (13) and N2 second flow diversion holes (14), the N1 first flow diversion holes (13) are arranged in the middle area of ​​the flow diversion plate (1), and the N2 second flow diversion holes (14) are arranged on the left and right sides of the N1 first flow diversion holes (13), N, N1, and N2 are all integers, and N = N1 + N2, N1>= 1, and N2>= 2; The aperture of the second diverter hole (14) is larger than that of the first diverter hole (13), so that the flow rate of the molten material flowing through the N2 second diverter holes (14) is the same as the flow rate of the molten material flowing through the N1 first diverter holes (13), and the pressure of the molten material with the same flow rate is evenly distributed when passing through the die hole (21), so that the molten material extruded through the die hole (21) forms a material strip with a uniform diameter.

2. The die head structure for extruding a molten material according to claim 1, characterized in that: The diverter plate (1) has a feed side end surface (11) and a discharge side end surface (12); the feed side end surface (11) is connected to the die head (3), and the discharge side end surface (12) is connected to the die head (2).

3. The die head structure for extruding a molten material according to claim 2, characterized in that: The feed side end surface (11) is provided with a positioning slot (111), and the positioning slot (111) is used to position the die head (3) and the diverter plate (1).

4. The die head structure for extruding a molten material according to claim 3, characterized in that: A first constant pressure groove (112) is provided at the middle position of the bottom of the positioning slot (111), and the first constant pressure groove (112) is connected to the two adjacent first diversion holes (13) and / or second diversion holes (14) and is used to balance the pressure between the first diversion holes (13) and / or the second diversion holes (14).

5. The die head structure for extruding a molten material according to claim 2, characterized in that: The discharge side end surface (12) is provided with a positioning step (121), and the positioning step (121) is used to position the diverter plate (1) and the die head (2).

6. The die head structure for extruding a molten material according to claim 5, characterized in that: A second constant pressure groove (122) is provided in the middle of the positioning step (121), and the second constant pressure groove (122) corresponds to the position of the die hole (21) so as to be connected to the die hole (21) and balance the pressure between the die holes (21).

7. The die head structure for extruding a molten material according to claim 1, characterized in that: The diverter plate (1) is provided with a plurality of first positioning holes (15) distributed in a circumferential direction, the die head (2) is provided with a second positioning hole (22), and the die head (3) is provided with an assembly hole (32), wherein the first positioning hole (15) corresponds to the positions of the second positioning hole (22) and the assembly hole (32), and the die head (2) and the diverter plate (1) are fixedly mounted on the assembly hole (32) by bolts passing through the second positioning hole (22) and the first positioning hole (15) in sequence.

8. A die head structure for extruding a molten material, characterized in that: include: A diverter plate (1), a die head (2), and a machine head (3), wherein the die head (2) is fixedly mounted on the machine head (3), and the diverter plate (1) is fixedly mounted between the die head (2) and the machine head (3); a discharge cavity (31) is arranged inside the machine head (3) for accommodating a molten material to be extruded, the die head (2) is provided with a die head hole (21), and the diverter plate (1) is provided with a plurality of diverter holes, wherein the plurality of diverter holes have the same or different apertures and correspond to the positions of the die head hole (21), and the diverter holes with the same or different apertures cooperate with each other so that the flow rate of the molten material flowing through the edge area of ​​the diverter plate (1) is the same as the flow rate of the molten material flowing through the middle area of ​​the diverter plate (1), and the pressure of the molten material with the same flow rate is evenly distributed when passing through the die head hole (21), so that the molten material extruded through the die head hole (21) forms material strips with uniform diameters.

9. A molten material extrusion structure, characterized in that: The invention comprises a diverter plate (1) and a die head (2), wherein the diverter plate (1) is fixedly mounted on the die head (2), the die head (2) is provided with a die head hole (21), and the diverter plate (1) is provided with a plurality of diverter holes, the diverter holes having the same or different apertures and corresponding to the positions of the die head hole (21), the diverter holes having the same or different apertures cooperate with each other, so that the flow rate of the molten material flowing through the edge area of ​​the diverter plate (1) is the same as the flow rate of the molten material flowing through the middle area of ​​the diverter plate (1).

10. A manifold, characterized in that: The diverter plate (1) is provided with N diverter holes, the N diverter holes comprising N1 first diverter holes (13) and N2 second diverter holes (14); the N1 first diverter holes (13) are arranged in the middle area of ​​the diverter plate (1), and the N2 second diverter holes (14) are arranged on the left and right sides of the N1 first diverter holes (13); N, N1, and N2 are all integers, and N=N1+N2, N1>=1, and N2>=2; the aperture of the second diverter hole (14) is larger than that of the first diverter hole (13), so that the flow rate of the material flowing through the N2 second diverter holes (14) is the same as the flow rate of the material flowing through the N1 first diverter holes (13).

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