High-voltage xlpe cable aluminum sheath extrusion reducing roller mechanism

Abstract

The utility model is applicable to the technical field of cable production, and provides a high-voltage xlpe cable aluminum sheath extrusion reducing roller mechanism which comprises a base plate, and a vertical shell is fixed at the top of the base plate; the mounting seat is arranged on the vertical shell, the height of the mounting seat is adjustable, and a mounting shell is fixed on the mounting seat; the roller frames are symmetrically arranged in the mounting shell, the distance between the roller frames is adjustable, and roller wheels are assembled on the roller frames through bearings and used for guiding and conveying extruded high-voltage xlpe cable aluminum sheaths; and the adjusting mechanism is arranged in the mounting shell and is used for adjusting the distance between the roller frames. According to the high-voltage xlpe cable aluminum sheath extrusion reducing roller mechanism provided by the scheme, the problem that the distance between roller feeding machines is troublesome to adjust during the current high-voltage xlpe cable aluminum sheath processing period is solved.

Description

Technical Field

[0001] This utility model belongs to the field of cable production technology, and in particular relates to a high-voltage XLPE cable aluminum sheath extrusion diameter reduction roller mechanism. Background Technology

[0002] In the cable manufacturing industry, aluminum sheath extrusion is a key step in the production of high-reliability power cables or communication cables. Among them, the diameter reduction guide roller mechanism is the core device for aluminum sheath forming, and its performance directly affects the uniformity, dimensional accuracy and production efficiency of the sheath.

[0003] However, existing guide roller mechanisms typically employ a fixed spacing design, forcibly constraining the forming path of the aluminum sheath through mechanical structures. Such mechanisms lack adaptability and require manual disassembly and replacement of rollers or adjustment of pads to achieve spacing adjustment, which is time-consuming, labor-intensive, and requires machine downtime, severely impacting the pace of continuous production. Utility Model Content

[0004] This utility model provides a high-voltage XLPE cable aluminum sheath extrusion diameter reduction roller mechanism, which aims to solve the problem of troublesome adjustment of the feed roller spacing during the current high-voltage XLPE cable aluminum sheath processing.

[0005] This utility model is implemented as follows: a high-voltage XLPE cable aluminum sheath extrusion diameter reduction roller mechanism, comprising: a base plate, the top of which is fixed with a vertical shell; a mounting seat disposed on the vertical shell and with adjustable height, the mounting seat having a mounting shell fixed thereon; roller frames symmetrically disposed within the mounting shells with adjustable spacing, rollers mounted on the roller frames via bearings, the rollers being used to guide the extruded high-voltage XLPE cable aluminum sheath; and an adjustment mechanism disposed within the mounting shells for adjusting the spacing of the roller frames.

[0006] Preferably, the adjusting mechanism includes: a first screw symmetrically mounted in the mounting housing via bearings, a sleeve threaded onto the first screw, one end of the sleeve being fixedly connected to the roller frame; a first guide rod fixed in the mounting housing, a sleeve block slidably mounted on the first guide rod, one end of the sleeve block being fixedly connected to the corresponding sleeve; a transmission rod mounted in the mounting housing via bearings, the transmission rod and the first screw being driven by meshing bevel gears; and a first motor fixed in the mounting base, the output shaft of the first motor being fixedly connected to the corresponding first screw via a coupling.

[0007] Preferably, the vertical shell is provided with a lifting mechanism for adjusting the lifting of the mounting base. The lifting mechanism includes: a second motor fixed inside the vertical shell, a second screw fixed to the output shaft of the second motor via a coupling; a sleeve threaded onto the second screw, the top end of the sleeve being fixedly connected to the mounting base; and a second guide rod disposed inside the vertical shell, the second guide rod passing through the sleeve for guiding.

[0008] Preferably, support columns are symmetrically fixedly installed on the bottom of the base plate, and foot pads are fixed to the bottom ends of the support columns.

[0009] Preferably, the sleeve plate has a sliding hole that is adapted to the second guide rod, and a support block is fixedly installed at the bottom of the second guide rod, and the support block is fixedly connected to the vertical shell.

[0010] Preferably, a limiting block for limiting is fixedly installed on the first guide rod, and a maintenance plate is assembled on the mounting shell by bolts.

[0011] Preferably, a baffle is mounted on the mounting base by screws, and the baffle has a heat dissipation vent for ventilation.

[0012] Preferably, the roller has an installation groove, and a rolling ball is provided in the installation groove.

[0013] Compared with related technologies, the high-voltage XLPE cable aluminum sheath extrusion diameter reduction roller mechanism provided by this utility model has the following beneficial effects:

[0014] With adjustable roller frames and roller spacing, the mechanism can adapt to the production of various specifications of high-voltage XLPE cable aluminum sheaths, greatly improving its adaptability and overcoming the limitations of traditional fixed-spacing designs. Regarding ease of adjustment and production continuity, operators can quickly and accurately adjust the roller spacing by controlling the first motor, without manual disassembly or replacement of rollers or adjustment pads, or machine downtime. This saves significant manpower and time costs, ensures production continuity, improves production efficiency, and meets the needs of modern industrial continuous production. Support columns and foot pads enhance the overall stability of the mechanism during operation. The first guide rod and sleeve block, the second guide rod, and the sliding hole guide and stabilize the movement of the adjustment and lifting mechanisms, preventing offset or wobbling during component movement, ensuring the accuracy of roller spacing adjustment and mounting seat lifting, and thus guaranteeing the normal operation of all components. Attached Figure Description

[0015] Figure 1 A schematic diagram of the main structure of a high-voltage XLPE cable aluminum sheath extrusion diameter reduction roller mechanism provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0017] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0018] Figure 4 for Figure 2 An enlarged structural diagram of part B shown in the figure;

[0019] Figure 5 This is a schematic diagram of the structure of the sleeve plate in this utility model.

[0020] Reference numerals in the attached drawings: 1. Base; 2. Vertical shell; 3. Mounting seat; 4. Mounting shell; 5. Roller frame; 6. Roller; 7. Ball bearing; 8. First screw; 9. Sleeve; 10. First guide rod; 11. Sleeve block; 12. First motor; 13. Transmission rod; 14. Bevel gear; 15. Second motor; 16. Second screw; 17. Sleeve plate; 18. Second guide rod. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] This utility model embodiment provides a high-voltage XLPE cable aluminum sheath extrusion diameter reduction roller mechanism, such as... Figure 1-5As shown, the high-voltage XLPE cable aluminum sheath extrusion diameter reduction roller mechanism includes: a base plate 1, with a vertical shell 2 fixed to the top of the base plate 1; a mounting seat 3 with adjustable height disposed on the vertical shell 2, with a mounting shell 4 fixed on the mounting seat 3; roller frames 5 symmetrically disposed within the mounting shell 4 with adjustable spacing, rollers 6 being assembled on the roller frames 5 via bearings, the rollers 6 being used to guide the extruded high-voltage XLPE cable aluminum sheath; and an adjustment mechanism disposed within the mounting shell 4 for adjusting the spacing of the roller frames 5.

[0024] In this embodiment, the roller frames 5 are symmetrically arranged within the mounting housing 4, and their spacing is adjustable. Rollers 6 are mounted on the roller frames 5 via bearings. During the extrusion of the aluminum sheath for high-voltage XLPE cables, the extruded aluminum sheath is guided by the rollers 6. Since the rollers 6 are mounted on the roller frames 5 via bearings, they can rotate freely, effectively reducing friction during the conveying process and ensuring smooth extrusion. Simultaneously, the symmetrically arranged rollers 6 constrain and guide the aluminum sheath from both sides, ensuring it forms along a predetermined path. The mounting housing 4 is equipped with an adjustment mechanism for adjusting the spacing of the roller frames 5. When it is necessary to change the spacing between the rollers 6 to accommodate the production of different specifications of high-voltage XLPE cable aluminum sheaths, the operator does not need to manually disassemble and replace the rollers or adjust the shims as in traditional mechanisms. Instead, by operating the adjustment mechanism, such as rotating a lead screw, the lead screw drives the nut to move, thereby pushing the roller frames 5 within the mounting housing 4, thus adjusting the spacing of the roller frames 5, which simultaneously changes the spacing between the rollers 6.

[0025] Traditional guide roller mechanisms use a fixed spacing design, resulting in insufficient adaptability. This invention, however, utilizes an adjustable roller frame 5 and roller 6 spacing to adapt to the production of various specifications of high-voltage XLPE cable aluminum sheaths, significantly improving the mechanism's adaptability. Previously, adjusting the spacing required manual disassembly and replacement of rollers or adjusting shims, which was time-consuming and labor-intensive. Now, the adjustment mechanism allows for rapid spacing adjustment, saving considerable manpower and time costs. Traditional methods require stopping the machine to adjust the spacing, severely impacting continuous production. This invention allows for spacing adjustment without stopping the machine, ensuring continuous production, improving production efficiency, and meeting the needs of modern industrial continuous production.

[0026] In a further preferred embodiment of this utility model, the adjusting mechanism includes: a first screw 8 symmetrically assembled in the mounting housing 4 via bearings, a sleeve 9 threadedly fitted on the first screw 8, one end of the sleeve 9 being fixedly connected to the roller frame 5; a first guide rod 10 fixed in the mounting housing 4, a sleeve block 11 slidably fitted on the first guide rod 10, one end of the sleeve block 11 being fixedly connected to the corresponding sleeve 9; a transmission rod 13 assembled in the mounting housing 4 via bearings, the transmission rod 13 and the first screw 8 being driven by meshing bevel teeth 14; and a first motor 12 fixed in the mounting base 3, the output shaft of the first motor 12 being fixedly connected to the corresponding first screw 8 via a coupling.

[0027] In this embodiment, the first screw 8 is symmetrically assembled within the mounting housing 4 via bearings, allowing the first screw 8 to rotate smoothly. A sleeve 9 is threaded onto the first screw 8. When the first screw 8 rotates, the sleeve 9 moves axially along the first screw 8 due to the thread. One end of the sleeve 9 is fixedly connected to the roller frame 5, so the movement of the sleeve 9 drives the roller frame 5 to move synchronously, thereby adjusting the gap between the rollers 6. For example, when it is necessary to increase the gap between the rollers 6, the first screw 8 rotates in a specific direction, pushing the sleeve 9 outward, and the roller frame 5 expands outward accordingly, increasing the gap between the rollers 6; conversely, the opposite is also true. The functions of the first guide rod 10 and the sleeve block 11 are as follows: the first guide rod 10 is fixed within the mounting housing 4, and the sleeve block 11 is slidably mounted on the first guide rod 10, with one end of the sleeve block 11 fixedly connected to the corresponding sleeve 9. The combination of the first guide rod 10 and the sleeve block 11 provides guidance and stability. As the sleeve 9 moves with the rotation of the first screw 8, the sleeve block 11 slides on the first guide rod 10, ensuring that the sleeve 9 can only move in a straight line along the direction of the first guide rod 10. This prevents the sleeve 9 from deviating or wobbling during movement, thus making the movement of the roller frame 5 more stable and accurate, and ensuring the precision of the roller spacing adjustment. The transmission rod 13 and the bevel gear 14 are connected by a bearing mounted in the mounting housing 4. The transmission rod 13 and the first screw 8 are driven by meshing bevel gears 14. This design allows power to be transmitted between the transmission rod 13 and the first screw 8. When one of the first screws 8 rotates under the drive of the first motor 12, the corresponding transmission rod 13 rotates along with it through the meshing of the bevel gears 14, thereby driving the other first screw 8 to rotate synchronously. This ensures that the symmetrically arranged roller frames 5 can move simultaneously and equally, guaranteeing uniform adjustment of the roller spacing 6, which is beneficial for maintaining stable constraint and guidance of the aluminum sheath during the conveying process. The first motor 12 is fixed within the mounting base 3, and its output shaft is fixedly connected to the corresponding first screw 8 via a coupling. The first motor 12 serves as the power source, providing power to the entire adjustment mechanism. By controlling the forward and reverse rotation and speed of the first motor 12, the operator can precisely control the rotation direction and speed of the first screw 8, thereby achieving precise adjustment of the roller spacing 6. For example, when rapid fine-tuning of the roller spacing 6 is required, the speed of the first motor 12 can be adjusted to drive the first screw 8 at a suitable speed. Compared to the traditional method of manually disassembling and replacing rollers or adjusting shims, this adjustment mechanism, driven by a motor, can quickly and accurately adjust the roller spacing 6. The operator only needs to control the first motor 12 to easily complete the adjustment operation, which greatly improves the adjustment efficiency and reduces the adjustment time; the transmission structure of the transmission rod 13 and the bevel gear 14 ensures that the two roller frames 5 can move synchronously, so that the gap between the rollers 6 is adjusted evenly.Meanwhile, the cooperation between the first guide rod 10 and the sleeve block 11 enhances the stability of the entire adjustment process, avoids shaking during the movement of the roller frame 5, and ensures that the aluminum sheath is always under stable and symmetrical constraint and guidance during the conveying process, which is conducive to improving the forming quality of the aluminum sheath.

[0028] In a further preferred embodiment of this utility model, the vertical shell 2 is provided with a lifting mechanism for adjusting the lifting of the mounting base 3. The lifting mechanism includes: a second motor 15 fixed inside the vertical shell 2, and a second screw 16 fixed to the output shaft of the second motor 15 via a coupling; a sleeve 17 threaded onto the second screw 16, the top end of the sleeve 17 being fixedly connected to the mounting base 3; and a second guide rod 18 disposed inside the vertical shell 2, the second guide rod 18 passing through the sleeve 17 for guidance.

[0029] In this embodiment, the second motor 15 is fixed inside the vertical housing 2, providing power to the entire lifting mechanism. The output shaft of the second motor 15 is securely connected to the second screw 16 via a coupling. When the second motor 15 starts, its output shaft drives the second screw 16 to rotate synchronously. Because the motor can precisely control its speed and direction, the rotation state of the second screw 16 can be precisely controlled. The sleeve 17 is threaded onto the second screw 16. When the second screw 16 rotates, according to the thread transmission principle, the sleeve 17 will be displaced along the axial direction of the second screw 16. The top of the sleeve 17 is fixedly connected to the mounting base 3, which means that the lifting of the sleeve 17 will directly drive the mounting base 3 to perform corresponding lifting actions. For example, when the second motor 15 rotates forward and the second screw 16 rotates clockwise, the sleeve 17 will move upward along the second screw 16, thereby raising the mounting base 3; conversely, if the second motor 15 rotates in reverse and the second screw 16 rotates counterclockwise, the sleeve 17 will move downward, and the mounting base 3 will lower accordingly. The guiding function of the second guide rod 18: The second guide rod 18 is located inside the vertical shell 2 and passes through the sleeve 17. Its main function is to provide guidance for the movement of the sleeve 17, ensuring that the sleeve 17 can only move in a straight line along the direction of the second guide rod 18 during the lifting process. This effectively prevents the sleeve 17 from shifting or swaying during movement, ensuring that the mounting base 3 can be lifted and lowered smoothly and accurately, improving the stability and precision of the entire lifting process. In the production process of high-voltage XLPE cable aluminum sheaths, different extrusion production lines may have different heights, or the height of the roller mechanism may need to be adjusted according to process requirements during production. In this case, the operator only needs to start the second motor 15 and control the motor's direction and speed to easily adjust the lifting of the mounting base 3. The lifting and lowering of the mounting base 3 will also drive the mounting shell 4 and the internal roller frame 5 and roller 6 to lift and lower as a whole, enabling the entire roller mechanism to quickly adapt to working environments of different heights. Compared with the traditional method that requires manual adjustment of the mechanism height, this lifting mechanism is driven by the second motor 15. The operator only needs to operate the motor at the control end to quickly lift and lower the mounting base 3, which greatly saves manpower and time costs and improves adjustment efficiency.

[0030] In a further preferred embodiment of this utility model, support columns are symmetrically fixedly installed on the bottom of the base plate 1, and foot pads are fixed at the bottom ends of the support columns.

[0031] In this embodiment, the combination of support column 19 and foot pad 20 significantly enhances the stability of the high-voltage XLPE cable aluminum sheath extrusion and diameter reduction roller mechanism during operation. Whether adjusting the roller spacing 6, raising and lowering the mounting base 3, or guiding the aluminum sheath, the stable support structure ensures the normal operation of all components of the mechanism.

[0032] In a further preferred embodiment of the present invention, a sliding hole is provided on the sleeve plate 17, the sliding hole is adapted to the second guide rod 18, a support block is fixedly installed at the bottom of the second guide rod 18, and the support block is fixedly connected to the vertical shell 2.

[0033] In this embodiment, the sleeve 17, as a key component connecting the mounting base 3 and the second screw 16 in the lifting mechanism, has a sliding hole. This sliding hole is adapted to the second guide rod 18, meaning that the second guide rod 18 can smoothly pass through the sliding hole. When the second motor 15 drives the second screw 16 to rotate, and the sleeve 17 moves along the axial direction of the second screw 16 due to threaded transmission, the sliding hole and the second guide rod 18 are tightly engaged, providing precise guidance for the movement of the sleeve 17. The sliding hole restricts the sleeve 17 to move only in a direction parallel to the second guide rod 18, preventing the sleeve 17 from deviating or twisting during movement, ensuring that the mounting base 3 and the entire roller mechanism can rise and fall smoothly, greatly improving the accuracy and stability of the lifting process.

[0034] In a further preferred embodiment of the present invention, a limiting block for limiting is fixedly installed on the first guide rod 10, and a maintenance plate is assembled on the mounting shell 4 by bolts.

[0035] In this embodiment, the limiting block 22 effectively avoids the risk of equipment damage caused by improper adjustment by limiting the movement range of the roller frame 5, ensuring the stable operation of the adjustment mechanism and the entire roller mechanism, reducing the frequency of equipment failure, and improving the stability and reliability of the production process.

[0036] In a further preferred embodiment of the present invention, a baffle is mounted on the mounting base 3 by screws, and the baffle has a heat dissipation vent for ventilation.

[0037] In this embodiment, the baffle 24 effectively blocks external debris, and the heat dissipation port 25's good heat dissipation function ensures that the equipment will not malfunction due to overheating during operation.

[0038] In a further preferred embodiment of the present invention, the roller 6 is provided with an installation groove, and a rollable ball 7 is provided in the installation groove.

[0039] In this embodiment, when the aluminum sheath of the high-voltage XLPE cable is extruded under the guidance of roller 6, the aluminum sheath comes into contact with and moves relative to the surface of roller 6. Traditionally, the roller surface directly contacts the aluminum sheath, resulting in high friction. This not only increases the power required to drive the roller to rotate but may also cause wear on the aluminum sheath surface, affecting product quality. The presence of the ball bearings 7 greatly improves this situation. The aluminum sheath contacts the ball bearings 7, and during the conveying process, the ball bearings 7 roll within the mounting groove 26, transforming the original sliding friction between the aluminum sheath and the roller into rolling friction. The coefficient of friction for rolling friction is much lower than that for sliding friction, making the conveying of the aluminum sheath smoother and significantly reducing the required driving force.

[0040] In summary, the adjustable roller frame 5 and roller 6 spacing allows for the production of various specifications of high-voltage XLPE cable aluminum sheaths, greatly improving the adaptability of the mechanism and overcoming the limitations of traditional fixed-spacing designs. Regarding ease of adjustment and production continuity, operators can quickly and accurately adjust the roller 6 spacing by controlling the first motor 12, without the need for manual disassembly and replacement of rollers or adjustment pads, or machine downtime. This saves significant manpower and time costs, ensures production continuity, improves production efficiency, and meets the demands of modern industrial continuous production. The support column 19 and foot pads 20 enhance the overall stability of the mechanism during operation. The first guide rod 10, sleeve block 11, second guide rod 18, and sliding holes guide and stabilize the movement of the adjustment and lifting mechanisms, preventing deviation or swaying during component movement, ensuring the accuracy of roller 6 spacing adjustment and the lifting accuracy of the mounting base 3, thereby guaranteeing the normal operation of all components of the mechanism.

[0041] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0042] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A high pressure xlpe cable aluminium sheath extrusion sizing roller mechanism characterised in that, The utility model relates to a high pressure xlpe cable aluminum sheath extruding device, including: The top of base plate (1) is fixed with vertical shell (2); The mounting seat (3) of adjustable height is arranged on the vertical shell (2), and the mounting shell (4) is fixed on the mounting seat (3); The roller frame (5) of adjustable spacing is symmetrically arranged in the mounting shell (4), and the roller wheel (6) for guiding the extruded high pressure xlpe cable aluminum sheath is assembled on the roller frame (5) through bearing; The adjusting mechanism for adjusting the spacing of roller frame (5) is arranged in the mounting shell (4).

2. The high pressure xlpe cable aluminum sheath extrusion sizing roller mechanism of claim 1, wherein, The adjusting mechanism includes: The first screw rod (8) is symmetrically assembled in the mounting shell (4) through bearing, the sleeve pipe (9) is threadedly sleeved on the first screw rod (8), and one end of the sleeve pipe (9) is fixedly connected with the roller frame (5); The first guide rod (10) is fixed on the mounting shell (4), the sleeve block (11) is slidably sleeved on the first guide rod (10), and one end of the sleeve block (11) is fixedly connected with the corresponding sleeve pipe (9); The transmission rod (13) is assembled in the mounting shell (4) through bearing, and the transmission rod (13) and the first screw rod (8) are driven through the intermeshing bevel gears (14) of assembly; The first motor (12) is fixed in the mounting seat (3), and the output shaft of the first motor (12) is fixedly connected with the corresponding first screw rod (8) through a shaft coupling.

3. The high pressure XLPE cable aluminum sheath extrusion sizing roller mechanism of claim 1, wherein, The lifting mechanism for regulating the lifting of the mounting seat (3) is arranged on the vertical shell (2), and the lifting mechanism includes: The second motor (15) is fixed in the vertical shell (2), a second screw rod (16) is fixed on the output shaft of the second motor (15) through a shaft coupling; The sleeve plate (17) is threadedly sleeved on the second screw rod (16), and the top end of the sleeve plate (17) is fixedly connected with the mounting seat (3); The second guide rod (18) is arranged in the vertical shell (2), and the second guide rod (18) penetrates the sleeve plate (17) and is used for guiding.

4. The high pressure XLPE cable aluminum sheath extrusion sizing roller mechanism of claim 1, wherein, Supporting columns are symmetrically fixed on the bottom of the base plate (1), and foot pads are fixed on the bottom end of the supporting columns.

5. The high pressure XLPE cable aluminum sheath extrusion sizing roller mechanism of claim 3, wherein, A sliding hole is formed in the sleeve plate (17), the sliding hole is matched with the second guide rod (18), a supporting block is fixedly installed on the bottom of the second guide rod (18), and the supporting block is fixedly connected with the vertical shell (2).

6. The high pressure XLPE cable aluminum sheath extrusion sizing roller mechanism of claim 2, wherein, A limiting block for limiting is fixedly installed on the first guide rod (10), and an inspection plate is assembled on the mounting shell (4) through bolts.

7. The high pressure XLPE cable aluminum sheath extrusion sizing roller mechanism of claim 1, wherein, A baffle is assembled on the mounting seat (3) through screws, and heat dissipation openings for ventilation are formed in the baffle.

8. The high pressure XLPE cable aluminum sheath extrusion sizing roller mechanism of claim 1, wherein, An installation groove is formed in the roller wheel (6), and the installation groove is provided with the rollable ball (7).

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