A calender for cable manufacturing

Abstract

The application discloses a calender for cable manufacturing and relates to the technical field of cable manufacturing. The calender is used for oiling before cable calendering forming. The calender comprises a driving device, a forming device, a lubricating device and an adjusting device. The driving device is connected with the forming device, the lubricating device and the adjusting device respectively. The forming device comprises calendering rollers and a compensating roller. The calendering rollers and the compensating roller are arranged in sequence along the strip material conveying direction. The compensating roller comprises a roller shaft. A plurality of roller bodies are arranged on the roller shaft in a sleeving mode. The roller shaft and the roller bodies are rotationally connected. The lubricating device comprises an oil distributor and a pressure sensing assembly. The oil distributor faces the upper surface of the strip material. The pressure sensing assembly and the oil distributor are arranged in sequence along the strip material conveying direction. The calendering rollers are arranged in a vertical direction. The number of the calendering rollers is not less than two. The upper calendering rollers are connected with the adjusting device at both ends. The lower calendering rollers are rotationally connected with the driving device at both ends. A plurality of differential assemblies are arranged on the roller shaft. The pressure sensing assembly and the differential assemblies are electrically connected. The differential assemblies drive the roller bodies to rotate at different speeds.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, specifically a calendering machine for cable manufacturing. Background Technology

[0002] Cables are a general term for optical cables, electrical cables, and other materials used to transmit signals, electricity, and other signals. They are widely used in daily life, industry, and communications. During cable manufacturing, a calendering process is required to increase the cable's surface area. Conventional cable calenders use winding and unwinding devices at both ends, and a roller pressing method in the middle for pressure forming.

[0003] In current cable rolling processes, especially for metal strips, the raw materials are drawn into a cylindrical shape. To reduce damage to the pressure rollers, lubricating oil is often used before rolling. However, due to gravity, the lubricating oil tends to accumulate at the bottom of the cable, preventing uniform application. This damages the roller surface and affects the quality of continuous production. Furthermore, excessive rolling volume in a single pass can easily cause edge tearing, further reducing production quality.

[0004] In addition, conventional cable calendering can only be carried out by single-sided conveying calendering machinery and cannot be processed by multi-strand adaptive processing. Summary of the Invention

[0005] The purpose of this invention is to provide a calendering machine for cable manufacturing, so as to solve the problem of uneven application of lubricating oil during the single-sided calendering process in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: Before the calender rolls the cable into shape, it first applies oil. The calender includes a drive unit, a forming unit, a lubrication unit, and an adjustment unit. The drive unit is connected to the forming unit, the lubrication unit, and the adjustment unit respectively. The forming device includes calendering rolls and compensating rolls, which are arranged sequentially along the strip conveying direction; The compensating roller includes a roller shaft, on which several roller bodies are fitted, and the roller shaft and roller bodies are rotatably connected. The lubrication device includes an oil distributor and a pressure sensing component. The oil distributor faces the upper surface of the strip, and the pressure sensing component and the oil distributor are arranged sequentially along the strip conveying direction. There are at least two calendering rolls arranged vertically. The upper calendering roll is connected to the adjustment device at both ends, and the lower calendering roll is connected to the drive device at both ends. Several differential components are provided on the roll shaft. The pressure sensing component and the differential component are electrically connected. Several differential components drive the roll body to rotate at different speeds.

[0007] The drive unit, as the main support structure, drives the entire machine, rotating the forming device to calender the strip. To ensure smooth calendering, the strip is lubricated with oil before calendering. The lubrication device is located between the pre-pressing station (where the calendering rolls are located) and the forming station (where the compensating rolls are located). It applies a second layer of oil to the pre-pressed strip, ensuring uniform oil film on the strip surface and improving the quality of the secondary roll forming by the compensating rolls. Simultaneously, an adjustment device is configured to compensate for the differential speed of the rolls, preventing strips with insufficient oil film from entering the forming station and affecting calendering smoothness. By setting the calendering rolls and compensating rolls for step-by-step calendering, the amount of stretching in a single calendering is reduced, preventing localized tearing of the strip and avoiding damage to the roll surface. The compensating roller adopts a split design, with the internal roller shaft as the power transmission component to drive the roller body to rotate. During the rotation, the oil film thickness is detected by the pressure sensing component. Based on the real-time oil film thickness of the strip, the differential speed component automatically adjusts the speed of the roller body and supplies oil at constant pressure through the oil distributor to automatically compensate for the oil film, so that the oil film thickness of the incoming strip is uniform and the calendering quality is guaranteed.

[0008] Furthermore, the drive device includes a bracket, on which a pre-pressing groove, an oil replenishment chamber, and a compensation groove are sequentially provided along the feeding direction; The adjusting device includes a bushing, a pressure-holding groove on the bushing, a pressure-holding cylinder inside the pressure-holding groove, a bearing bush at the output end of the pressure-holding cylinder, and the bearing bush and the pressure-holding groove are slidably connected. The pressure sensing component is placed in the oil replenishment chamber, and the pressure sensing component abuts against the upper side of the strip. The bushing is placed in the pre-pressing groove, and one side of the bearing abuts against the calendering roll. Both ends of the roll body are rotatably connected to the compensation groove.

[0009] The support frame serves as the primary load-bearing foundation for mounting other components. Pre-compression grooves, oil replenishment chambers, and compensation grooves, arranged sequentially along the strip, perform pre-compression, oil replenishment lubrication, and secondary calendering of the strip, respectively. Initially, the strip material may be cylindrical, and lubricating oil may accumulate on the lower side, resulting in poor adhesion on the upper side. Pre-compression increases the upper surface area; oil replenishment lubrication reduces damage to the roll surface during subsequent calendering. Simultaneously, the increased strip temperature after pre-compression improves the fluidity of the replenished lubricating oil, resulting in a full-surface coating and ensuring sufficient film thickness. The upper calendering rolls are supported and limited by bushings and bearings, and a pressure-holding cylinder applies pressure sufficient for the required downward pressure during calendering. When hard impurities enter, the force required for deformation of the impurities is greater than the force required for strip deformation. When hard impurities enter, the reverse force applied to the calendering rolls is greater than the pressure applied by the holding cylinder. This causes the holding cylinder to move upwards via the bearing bush, achieving mechanical self-adaptation and combining rigid calendering with flexible avoidance. The lower calendering rolls are directly rotated and supported on the bracket. The pressure-sensing component is installed through the oil replenishment chamber, allowing it to contact the upper side of the strip for frictional transmission. This facilitates the detection of the lubricating oil thickness on the upper side of the strip, enabling subsequent compensation. The bushing is installed in the pre-pressing groove, and the bearing bush can slide within the holding groove, facilitating flexible avoidance when hard impurities appear. Based on the flexible avoidance mechanism, a robotic arm can be used to remove the impurities when they are present.

[0010] Furthermore, the pressure-sensing component includes a coating wheel and a bias rod. The coating wheel is provided with a sensing cavity, the sensing cavity and the bias rod are rotatably connected, the sensing cavity is provided with a sensing coil, and a stop spring is provided on one side of the bias rod. The other end of the stop spring is fastened to the wall of the sensing cavity. The lower end of the coating wheel abuts against the upper side of the strip.

[0011] The lower end of the coating wheel contacts the upper side of the strip. During the strip's transmission, it drives the coating wheel to rotate. To improve transmission friction, materials such as rubber can be used. The less lubricating oil remains on the upper surface of the strip, the greater the friction transmission coefficient, meaning the higher the rotational speed of the coating wheel. During the rotation of the coating wheel, the bias rod rotates in the opposite direction under centrifugal force. It adopts a bent structure, and the part inserted into the induction coil is made of magnet material. The induction coil moves by cutting magnetic field lines and generates current. During the rotation of the bias rod, it drives the abutment spring to deform, for example, to compress. When the instantaneous speed increases, the equilibrium state is broken, and the abutment spring pushes the bias rod to continue rotating, generating a compensation current. The less lubricating oil, the greater the current generated, thus enabling real-time monitoring of the lubricating oil on the upper surface of the strip.

[0012] Furthermore, the differential assembly includes a differential motor and gears, with the output of the differential motor connected to the gears; The roller shaft is equipped with several speed regulating chambers; The inner ring of the roller body is provided with an internal toothed surface; The differential motor is placed inside the speed regulating chamber, where the gears mesh with the internal tooth surfaces.

[0013] The differential motor is installed through the speed regulating cavity on the roller shaft. In the initial state, all rollers rotate synchronously with the roller shaft. When a certain strip has less lubricating oil in a local area, the differential motor outputs reverse torque. Through the meshing of gears and internal tooth surfaces, the speed of the roller body is compensated, so that the speed of the roller body is reduced, and the amount of oil supplied by the oil distributor to the local area of ​​the strip is increased, thereby ensuring that the oil film of the strip entering the forming station is uniform.

[0014] Furthermore, the detection circuit containing the induction coil is electrically connected to the adjacent differential motor.

[0015] The greater the current in the detection circuit, the greater the torque output of the differential motor, which means a longer dwell time, thus enabling point-to-point compensation and ensuring uniform oil film thickness.

[0016] As an optimization, the lubrication device also includes an oil tank, with pipelines connecting the oil tank and the oil distributor. Lubricating oil is supplied through the oil tank, pumped into the oil distributor, and replenished to the strip material through multiple outlets at the end.

[0017] As an optimization, the drive unit also includes several drive motors, which are respectively connected to the calendering rolls and the roll shaft. By setting the output torque of the drive motors, the calendering rolls and the roll shaft are driven to rotate respectively. The specific installation position can be set as needed. For example, if the upper calendering roll needs to be moved upward for flexible retraction, the drive motor can be mounted on the bearing bush or slidably arranged in the pressure holding groove. The output torque is ensured by setting two side plates. The lower drive motor can be mounted on the bracket to ensure stable torque output.

[0018] As an optimization, the lubrication device also includes a scraper, which is securely connected to a bracket, with one side of the scraper contacting the upper side of the coating wheel. By mounting the scraper on the bracket, the lubricating oil on the coating wheel is scraped off, ensuring the accuracy of subsequent oil film thickness measurements.

[0019] Compared with the prior art, the beneficial effects of the present invention are: by setting calendering rolls and compensation rolls for step-by-step calendering, the amount of stretching in a single calendering is reduced, preventing local tearing of the strip and avoiding damage to the roll surface. The compensating roller adopts a split design, using an internal roller shaft as the power transmission component to drive the roller body to rotate. During rotation, the oil film thickness is detected by a pressure sensing component. Based on the real-time oil film thickness of the strip, the differential speed component automatically adjusts the speed of the roller body and provides constant pressure oil supply through an oil distributor to automatically compensate for the oil film, ensuring a uniform oil film thickness on the incoming strip and guaranteeing calendering quality. The initial strip material may be cylindrical, and lubricating oil may accumulate on the lower side, resulting in poor adhesion on the upper side. Pre-compression increases the surface area on the upper side, and supplementary oil lubrication reduces damage to the roller surface during subsequent calendering. At the same time, the increased temperature of the strip after pre-compression improves the fluidity of the supplementary lubricating oil, resulting in full coating on the upper surface and facilitating film thickness. When a certain area of ​​the strip has insufficient lubricating oil, the differential speed motor outputs reverse torque, which compensates for the speed of the roller body through gear and internal tooth meshing, reducing the roller body speed. The larger the current of the detection circuit, the larger the torque output of the differential speed motor, i.e., the longer the residence time, thus performing point-to-point compensation to ensure uniform oil film thickness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lubrication device structure of the present invention; Figure 3 This is a schematic diagram of the compensation roller structure of the present invention; Figure 4 for Figure 1 A partial C-zoom view of the view; Figure 5 for Figure 2 A magnified view of a portion of the view; Figure 6 for Figure 2 A partial zoom-in view (B) of the view; Figure 7 This is a schematic diagram of the differential drive system of the present invention.

[0021] In the diagram: 1. Drive unit; 11. Drive motor; 12. Support; 121. Pre-pressing groove; 122. Oil replenishment chamber; 123. Compensation groove; 2. Forming device; 21. Calendering roll; 22. Compensation roll; 221. Roll shaft; 222. Roll body; 23. Differential assembly; 231. Differential motor; 232. Gear; 3. Lubrication device; 31. Oil tank; 32. Oil distributor; 33. Pressure sensing assembly; 331. Coating wheel; 3311. Sensing chamber; 332. Offset rod; 333. Abutment spring; 334. Induction coil; 34. Scraper; 4. Adjustment device; 41. Bushing; 42. Bearing shell; 43. Pressure holding cylinder. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example: Figures 1-7 As shown, the present invention provides a technical solution for a calendering machine for cable manufacturing.

[0024] Before the calender rolls the cable into shape, it first applies oil. The calender includes a drive device 1, a forming device 2, a lubrication device 3, and an adjustment device 4. The drive device 1 is connected to the forming device 2, the lubrication device 3, and the adjustment device 4 respectively. The forming device 2 includes a calendering roll 21 and a compensating roll 22, which are arranged sequentially along the strip conveying direction; The compensating roller 22 includes a roller shaft 221, and a plurality of roller bodies 222 are sleeved on the roller shaft 221. The roller shaft 221 and the roller bodies 222 are rotatably connected. Lubrication device 3 includes an oil distributor 32 and a pressure sensing component 33. The oil distributor 32 faces the upper surface of the strip, and the pressure sensing component 33 and the oil distributor 32 are arranged sequentially along the strip conveying direction. There are at least two calendering rolls 21 arranged vertically. The upper calendering roll 21 is connected to the adjustment device 4 at both ends, and the lower calendering roll 21 is rotatably connected to the drive device 1 at both ends. Several differential components 23 are provided on the roller shaft 221. The pressure sensing component 33 and the differential component 23 are electrically connected. Several differential components 23 drive the roller body 222 to rotate at different speeds.

[0025] The drive unit 1 serves as the main support structure and drives the entire machine. By rotating the forming unit 2, it calenders the strip material. To ensure smooth calendering, the strip material is lubricated with oil before calendering. The lubrication unit 3, located between the pre-pressing station where the calendering roll 21 is located and the forming station where the compensating roll 22 is located, applies a second layer of oil to the pre-pressed strip material, ensuring uniformity of the oil film on the strip surface and improving the quality of the secondary roll forming by the compensating roll 22. Simultaneously, an adjustment device 4 is configured to provide differential speed compensation for the roll body 222, preventing strip material with insufficient oil film from entering the forming station and affecting the smoothness of calendering. By setting the calendering roll 21 and the compensating roll 22 to perform step-by-step calendering, the amount of stretching in a single calendering is reduced, preventing localized tearing of the strip material and avoiding damage to the roll surface. The compensating roller 22 adopts a split design, with the internal roller shaft 221 as the power transmission component to drive the roller body 222 to rotate. During the rotation, the oil film thickness is detected by the pressure sensing component 33. Based on the real-time oil film thickness of the strip, the differential speed component 23 automatically adjusts the speed of the roller body 222 and supplies oil at constant pressure through the oil distributor 32 to automatically compensate for the oil film, so that the oil film thickness of the incoming strip is uniform and the calendering quality is guaranteed.

[0026] Furthermore, the drive device 1 includes a bracket 12, on which a pre-pressing groove 121, an oil replenishment chamber 122 and a compensation groove 123 are sequentially provided along the feeding direction; The adjusting device 4 includes a bushing 41, a pressure-holding groove on the bushing 41, a pressure-holding cylinder 43 inside the pressure-holding groove, a bearing 42 at the output end of the pressure-holding cylinder 43, and the bearing 42 and the pressure-holding groove are slidably connected. The pressure sensing component 33 is placed in the oil replenishment chamber 122, and the pressure sensing component 33 abuts against the upper side of the strip. The bushing 41 is placed in the pre-pressing groove 121, and one side of the bearing 42 abuts against the calendering roll 21. The two ends of the roll body 222 are rotatably connected to the compensation groove 123 respectively.

[0027] The support 12 serves as the main load-bearing foundation for installing other devices. The pre-pressing groove 121, the oil replenishment chamber 122, and the compensation groove 123, arranged sequentially along the strip, respectively pre-press, replenish oil lubricate, and perform secondary calendering on the strip. The initial strip material may be cylindrical, and the lubricating oil may accumulate on the lower side, resulting in poor adhesion on the upper side. Pre-pressing increases the surface area on the upper side, and replenishing oil lubrication can reduce the damage to the roller surface during subsequent calendering. At the same time, the temperature of the strip increases after pre-pressing, which improves the fluidity of the replenished lubricating oil, forming a full coating on the upper surface and making it easy to ensure the film thickness. The upper calender roll 21 is supported and limited by the bushing 41 and bearing 42. A certain pressure is applied by the holding cylinder 43, which can meet the downward pressure required for calendering. When hard impurities enter, the force required for deformation of the hard impurities is greater than the deformation force of the strip. That is, when hard impurities enter, the reverse force applied to the calender roll 21 is greater than the pressure applied by the holding cylinder 43. The bearing pushes the holding cylinder upward to achieve mechanical self-adaptation, realizing a combination of rigid calendering and flexible avoidance. The lower calender roll 21 is directly rotated and supported on the bracket 12. The pressure sensing component 33 is installed through the oil replenishment chamber 122, so that the pressure sensing component 33 contacts the upper side of the strip and performs friction transmission, which facilitates the detection of the lubricating oil thickness on the upper side of the strip and facilitates subsequent compensation. The bushing 41 is installed in the pre-pressing groove 121, and the bearing 42 can slide in the holding groove, which facilitates flexible avoidance when hard impurities appear. When hard impurities are present, a robotic arm can be used to remove them based on the flexible avoidance mechanism.

[0028] Furthermore, the pressure-sensing component 33 includes a coating wheel 331 and a bias rod 332. The coating wheel 331 is provided with a sensing cavity 3311. The sensing cavity 3311 and the bias rod 332 are rotatably connected. The sensing cavity 3311 is provided with a sensing coil 334. One side of the bias rod 332 is provided with a stop spring 333. The other end of the stop spring 333 is fastened to the wall of the sensing cavity 3311. The lower end of the coating wheel 331 abuts against the upper side of the strip.

[0029] The lower end of the coating wheel 331 contacts the upper side of the strip. During the strip's transmission, it drives the coating wheel 331 to rotate. To improve the transmission friction, materials such as rubber can be used. The less lubricating oil remains on the upper surface of the strip, the greater the friction transmission coefficient, meaning the faster the coating wheel 331 rotates. During the rotation of the coating wheel 331, the bias rod 332 rotates in the opposite direction under centrifugal force. It adopts a bent structure, and the part inserted into the induction coil 334 is made of magnet material. The induction coil 334 cuts magnetic lines of force and generates current. During the rotation of the bias rod 332, it drives the abutment spring 333 to deform, for example, to compress. When the instantaneous speed increases, the equilibrium state is broken, and the abutment spring 333 pushes the bias rod 332 to continue rotating, generating a compensation current. The less lubricating oil, the greater the current generated, thus enabling real-time monitoring of the lubricating oil on the upper surface of the strip.

[0030] Furthermore, the differential assembly 23 includes a differential motor 231 and a gear 232, with the output end of the differential motor 231 connected to the gear 232; The roller 221 is provided with several speed regulating chambers; The inner ring of the roller body 222 is provided with an internal toothed surface; The differential motor 231 is placed inside the speed regulating chamber, and the gear 232 meshes with the internal tooth surface.

[0031] The differential motor 231 is installed through the speed regulating cavity on the roller shaft 221. In the initial state, all roller bodies 222 rotate synchronously with the roller shaft 221. When a certain strip has less lubricating oil in a local area, the differential motor 231 outputs reverse torque. Through the meshing of gears and internal tooth surfaces, the speed of the roller body 222 is compensated, so that the speed of the roller body 222 is reduced, and the amount of oil supplied by the oil distributor 32 to the local area of ​​the strip is increased, thereby ensuring that the oil film of the strip entering the forming station is uniform.

[0032] Furthermore, the detection circuit containing the induction coil 334 is electrically connected to the adjacent differential motor 231.

[0033] The greater the current in the detection circuit, the greater the torque output of the differential motor 231, which means a longer dwell time, thus enabling fixed-point compensation and ensuring uniform oil film thickness.

[0034] As an optimization, the lubrication device 3 also includes an oil tank 31, which is connected to the oil distributor 32 via pipelines. The oil tank 31 supplies lubricating oil, which is pumped into the oil distributor 32 and replenishes the strip material through multiple outlets at the end.

[0035] As an optimization, the drive unit 1 also includes several drive motors 11, which are respectively connected to the calendering roll 21 and the roller shaft 221. By setting the output torque of the drive motors 11, the calendering roll 21 and the roller shaft 221 are driven to rotate respectively. The specific installation position can be set as needed. For example, if the upper calendering roll 21 needs to be moved upward for flexible retraction, the drive motor 11 can be installed on the bearing bush 42 or slidably arranged in the pressure holding groove. The output torque is ensured by setting two side plates. The lower drive motor 11 can be installed on the bracket 12 to ensure stable torque output.

[0036] As an optimization, the lubrication device 3 also includes a scraper 34, which is fastened to the bracket 12, with one side of the scraper 34 contacting the upper side of the coating wheel 331. By setting the scraper 34 on the bracket 12, the lubricating oil on the coating wheel 331 is scraped off, ensuring the accuracy of subsequent oil film thickness detection.

[0037] The working principle of this invention is as follows: By setting the calendering roller 21 and the compensation roller 22 for step-by-step calendering, the stretching amount of a single calendering is reduced, preventing local tearing of the strip and avoiding damage to the roller surface. The compensation roller 22 adopts a split design, with the internal roller shaft 221 as the power transmission component, driving the roller body 222 to rotate. During rotation, the oil film thickness is detected by the pressure sensing component 33. Based on the real-time oil film thickness of the strip, the differential speed component 23 automatically adjusts the speed of the roller body 222, and the oil distributor 32 provides constant pressure oil supply for automatic oil film compensation, ensuring uniform oil film thickness of the incoming strip and guaranteeing calendering quality. The initial strip material may be cylindrical, and lubricating oil may accumulate on the lower side, resulting in poor adhesion on the upper side. Pre-pressing increases the surface area of ​​the upper side, thereby... Oil replenishment lubrication can reduce damage to the roller surface during subsequent calendering. At the same time, the increased temperature of the strip after pre-pressing improves the fluidity of the replenished lubricating oil, resulting in a full coating on the upper surface and making it easier to ensure film thickness. When a certain strip has insufficient lubricating oil in a local area, the differential motor 231 outputs reverse torque, which compensates for the speed of the roller body 222 through gear and internal tooth surface meshing, thus reducing the speed of the roller body 222. The larger the current of the detection circuit, the larger the torque output of the differential motor 231, that is, the longer the residence time, thereby performing fixed-point compensation to ensure uniform oil film thickness.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A calendering machine for cable manufacturing, wherein the calendering machine applies oil before calendering the cable, characterized in that: The calender includes a drive device (1), a forming device (2), a lubrication device (3) and an adjustment device (4), wherein the drive device (1) is connected to the forming device (2), the lubrication device (3) and the adjustment device (4) respectively; The forming device (2) includes a calendering roll (21) and a compensating roll (22), which are arranged sequentially along the strip conveying direction; The compensation roller (22) includes a roller shaft (221), and a plurality of roller bodies (222) are sleeved on the roller shaft (221). The roller shaft (221) and the roller bodies (222) are rotatably connected. The lubrication device (3) includes an oil distributor (32) and a pressure sensing component (33). The oil distributor (32) faces the upper surface of the strip, and the pressure sensing component (33) and the oil distributor (32) are arranged sequentially along the strip conveying direction. At least two calendering rolls (21) are arranged vertically. The upper calendering roll (21) is connected to the adjustment device (4) at both ends, and the lower calendering roll (21) is rotatably connected to the drive device (1) at both ends. Several differential components (23) are provided on the roller shaft (221). The pressure sensing component (33) and the differential component (23) are electrically connected. Several differential components (23) drive the roller body (222) to rotate at different speeds. The drive device (1) includes a bracket (12), on which a pre-pressing groove (121), an oil replenishment chamber (122) and a compensation groove (123) are sequentially provided along the feeding direction. The adjusting device (4) includes a bushing (41), a pressure-holding groove is provided on the bushing (41), a pressure-holding cylinder (43) is provided in the pressure-holding groove, and a bearing (42) is provided at the output end of the pressure-holding cylinder (43). The bearing (42) and the pressure-holding groove are slidably connected. The pressure-sensing component (33) is placed in the oil replenishment chamber (122), and the pressure-sensing component (33) abuts against the upper side of the strip. The bushing (41) is placed in the pre-pressing groove (121), and one side of the bearing (42) abuts against the calendering roll (21). Both ends of the roll body (222) are rotatably connected to the compensation groove (123). The pressure-sensing assembly (33) includes a coating wheel (331) and a bias rod (332). The coating wheel (331) is provided with a sensing cavity (3311). The sensing cavity (3311) and the bias rod (332) are rotatably connected. The sensing cavity (3311) is provided with a sensing coil (334). The bias rod (332) is provided with a stop spring (333) on one side. The other end of the stop spring (333) is fastened to the wall of the sensing cavity (3311). The lower end of the coating wheel (331) abuts against the upper side of the strip.

2. The calendering machine for cable manufacturing according to claim 1, characterized in that: The differential assembly (23) includes a differential motor (231) and a gear (232), with the output end of the differential motor (231) connected to the gear (232); The roller (221) is provided with several speed regulating chambers; The inner ring of the roller body (222) is provided with an inner toothed surface; The differential motor (231) is placed in the speed regulating cavity, and the gear (232) meshes with the internal tooth surface.

3. A calendering machine for cable manufacturing according to claim 2, characterized in that: The detection circuit containing the induction coil (334) is electrically connected to the adjacent differential motor (231).

4. A calendering machine for cable manufacturing according to any one of claims 1 to 3, characterized in that: The lubrication device (3) also includes an oil tank (31), which is connected to the oil distributor (32) via pipeline.

5. A calendering machine for cable manufacturing according to claim 4, characterized in that: The driving device (1) also includes a plurality of driving motors (11), which are respectively connected to the calendering roll (21) and the roller shaft (221).

6. A calendering machine for cable manufacturing according to claim 1, characterized in that: The lubrication device (3) also includes a scraper (34), which is fastened to the bracket (12), and one side of the scraper (34) contacts the upper side of the coating wheel (331).

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