An on-line thickness detector for cable jacket extrusion

Abstract

The utility model belongs to cable production technical field especially relates to a kind of online thickness detector of cable sheath extrusion, including extruder and extrusion head, extrusion head is installed in the upper side of extruder, and it is equipped with two discharge ends distributed left and right, still including fixed ring and controller etc., two fixed rings are fixedly connected in the outside of extrusion head and are distributed side by side, controller is installed in the upper side of extruder, and located below extrusion head. By setting servo motor, gear, gear ring, electric push rod, cylinder, buffer plate, distance sensor, controller, buzzer alarm and alarm light and other components, a complete real-time detection system is built, the system can continuously monitor the thickness of cable sheath material, and when the thickness of sheath material is abnormal, the change is immediately captured to issue an alarm, timely remind operator to take corresponding adjustment measures, reduce the generation of defective products, improve product quality.

Description

Technical Field

[0001] This utility model belongs to the field of cable production technology, and in particular relates to an online thickness measuring instrument for cable sheath extrusion. Background Technology

[0002] A cable is a group of conductive wires used to transmit electrical signals or electrical energy, typically consisting of one or more conductors. The cable sheath is a protective layer covering the outermost layer of the cable, its main function being to protect the internal conductors and insulation from mechanical damage, chemical corrosion, moisture, and other environmental factors. During production, the cable sheath is formed through an extrusion process, and accurate thickness measurement during sheath extrusion is a crucial step in ensuring cable quality.

[0003] Traditionally, after the cable sheath is extruded, samples are taken from the production line at regular intervals or along the production length, and then these samples are taken to specialized testing equipment for thickness testing. This testing method completely separates the testing process from the actual production process. Due to the limitations of the sampling method, the number of samples taken each time is limited, making it difficult to fully reflect the overall production situation. Consequently, the test results cannot be fed back to the production stage in a timely manner. This situation will seriously reduce production efficiency. If the test results show that the thickness is unqualified, a large number of products already produced may need to be reworked or scrapped directly, resulting in a waste of resources such as raw materials, manpower, and time.

[0004] Therefore, there is a particular need for an online thickness measuring instrument for cable sheath extrusion to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional testing methods, such as separation of testing and production, limited sampling making it difficult to fully reflect the production situation, resulting in the inability to provide timely feedback of test results, reduced production efficiency, and easy waste of resources, this utility model provides an online thickness tester for cable sheath extrusion.

[0006] This utility model is achieved through the following technical means: an online thickness detector for cable sheath extrusion, comprising an extruder and an extrusion head, the extrusion head being installed on the upper side of the extruder and having two discharge ends distributed on the left and right, and further comprising a fixing ring, a controller, a fixing block, a buzzer alarm, an alarm light, a guide frame, a screw, a sliding block, and a detection component. The two fixing rings are arranged side by side and fixed to the outside of the extrusion head. The controller is installed on the upper side of the extruder and located below the extrusion head. Each fixing block is fixed to the top of each fixing ring. Each buzzer alarm is installed on one side of each fixing block. Each alarm light is installed at the top of each fixing block. Both the buzzer alarm and the alarm light are electrically connected to the controller. One end of each guide frame is fixed to the upper part of each fixing block. One end of each screw is rotatably disposed on the upper part of each fixing block, and the other end is rotatably connected to the adjacent guide frame. Each sliding block is threaded on the outside of each screw and slidably connected to the adjacent guide frame. The length of the threaded area of ​​each screw is consistent with the length of the guiding area of ​​each guide frame. The detection component is disposed on the sliding block.

[0007] In a preferred embodiment of this utility model, the detection component includes a servo motor, gears, a fixed frame, a gear ring, an electric push rod, a connecting frame, a roller, a buffer plate, a spring, a guide rod, and a distance sensor. Each servo motor is mounted on each sliding block and electrically connected to the controller. Each gear is fixed to the output shaft of each servo motor. Each fixed frame is fixed to the lower part of each sliding block. A gear ring is rotatably mounted on the lower part of each fixed frame. The number of gear rings is the same as the number of gears, and they mesh one-to-one. Each electric push rod is mounted on each gear ring and electrically connected to the controller. A connecting frame is fixed to the telescopic end of each electric push rod. Multiple guide rods distributed along a rectangular direction are slidably mounted on each connecting frame. Each buffer plate is fixed between one end of each of the multiple guide rods. Each roller is rotatably mounted on each buffer plate. Each spring is sleeved on the outside of each guide rod, and its two ends are fixedly connected to the corresponding connecting frame and the corresponding buffer plate, respectively. Each distance sensor is mounted on one side of each buffer plate and electrically connected to the controller.

[0008] In a preferred embodiment of the present invention, the invention further includes a water inlet pipe and nozzles. Each water inlet pipe is fixed to each fixed bracket, with its water inlet end facing forward and having threads. Multiple nozzles arranged radially are fixed to the annular sidewall of each water inlet pipe.

[0009] In a preferred embodiment of this utility model, the discharge end of the extruder, the toothed ring, and the water inlet pipe are centered in the horizontal direction.

[0010] In a preferred embodiment of this utility model, a pentagonal torsion block is fixed to the other end of each screw.

[0011] In a preferred embodiment of this utility model, the nozzle is an atomizing nozzle.

[0012] Beneficial effects: 1. By setting up components such as servo motors, gears, gear rings, electric push rods, rollers, buffer plates, distance sensors, controllers, buzzer alarms, and alarm lights, a complete real-time detection system is built. This system can continuously monitor the thickness of cable sheath materials and immediately detect and issue an alarm when abnormalities occur in the thickness of the sheath materials, promptly reminding operators to take corresponding adjustment measures, reducing the generation of defective products, and improving product quality.

[0013] 2. The design of the water inlet pipe and nozzle enables water cooling of the extruded sheath material, which helps the sheath material to quickly set and stabilize its performance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the buzzer alarm, alarm light, and guide frame.

[0016] Figure 3 This is a three-dimensional structural diagram of the servo motor, gears, and mounting bracket of this utility model.

[0017] Figure 4 This is a partial sectional view of the fixing bracket component of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the roller, buffer plate, and distance sensor components of this utility model.

[0019] The above-mentioned attached figures include the following reference numerals: 1. Extruder, 2. Extrusion head, 3. Fixing ring, 4. Controller, 5. Fixing block, 6. Buzzer alarm, 7. Alarm light, 8. Guide frame, 9. Screw, 11. Sliding block, 12. Servo motor, 13. Gear, 14. Fixing frame, 15. Water inlet pipe, 16. Nozzle, 17. Gear ring, 19. Electric push rod, 20. Connecting frame, 21. Roller, 22. Buffer plate, 23. Spring, 24. Guide rod, 25. Distance sensor. Detailed Implementation

[0020] Example: An online thickness measuring instrument for cable sheath extrusion, such as... Figures 1-5As shown, the device includes an extruder 1 and an extrusion head 2. The extrusion head 2 is bolted to the upper front side of the extruder 1 and has two discharge ends distributed to the left and right, capable of simultaneously extruding two sheath materials. It also includes retaining rings 3, a controller 4, retaining blocks 5, a buzzer alarm 6, an alarm light 7, a guide frame 8, a screw 9, a sliding block 11, and a detection assembly. Two retaining rings 3 are welded side-by-side to the outside of the extrusion head 2. The controller 4 is bolted to the upper front side of the extruder 1 and located below the extrusion head 2. Each retaining block 5 is welded to the top of each retaining ring 3. Each buzzer alarm 6 is bolted to the front of each retaining block 5, and each alarm light 7 is bolted to the top of each retaining ring 3. At the top of the fixed block 5, the buzzer alarm 6 and the alarm light 7 are electrically connected to the controller 4. The inward end of each guide frame 8 is welded to the upper part of each fixed block 5. The inward end of each screw 9 is rotatably set on the upper part of each fixed block 5, and the outward end is rotatably connected to the adjacent guide frame 8. Each sliding block 11 is threaded on the outside of each screw 9 and is slidably connected to the adjacent guide frame 8. The length of the threaded area of ​​each screw 9 is consistent with the length of the guide area of ​​each guide frame 8. A pentagonal torsion block is welded to the outward end of each screw 9 to facilitate the operator to rotate the screw 9 to adjust the position of the sliding block 11. The detection component is set on the sliding block 11.

[0021] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the detection assembly includes a servo motor 12, gears 13, a mounting bracket 14, a gear ring 17, an electric push rod 19, a connecting bracket 20, a roller 21, a buffer plate 22, a spring 23, a guide rod 24, and a distance sensor 25. Each servo motor 12 is bolted to each sliding block 11 and electrically connected to the controller 4. Each gear 13 is connected to the output shaft of each servo motor 12 via a key connection. Each mounting bracket 14 is welded to the lower part of each sliding block 11. A gear ring 17 is rotatably mounted on the lower part of each mounting bracket 14. The number of gear rings 17 is the same as the number of gears 13, and they mesh one-to-one. The discharge end of the extruder head 2 is centered with the gear ring 17 in the horizontal direction to ensure that the discharge end of the extruder head 2 is aligned with the gear ring 17 during extrusion. When the sheath material is dispensing, the sheath material can pass smoothly through the gear ring 17. Each electric push rod 19 is bolted to each gear ring 17 and electrically connected to the controller 4. A connecting frame 20 is welded to the telescopic end of each electric push rod 19. Four guide rods 24 distributed along a rectangular direction are slidably arranged on each connecting frame 20. Each buffer plate 22 is welded between one end of each of the four guide rods 24. Each roller 21 is rotatably arranged on each buffer plate 22. Each spring 23 is sleeved on the outside of each guide rod 24, and its two ends are fixedly connected to the corresponding connecting frame 20 and the corresponding buffer plate 22 respectively. Each distance sensor 25 is bolted to the side of each buffer plate 22 away from the corresponding electric push rod 19 and electrically connected to the controller 4.

[0022] like Figure 3 As shown, it also includes a water inlet pipe 15 and nozzles 16. Each water inlet pipe 15 is welded to each fixed frame 14, with its water inlet end facing forward and having threads for easy connection to an external water pipe. The discharge end of the extruder 2 is centered with the water inlet pipe 15 in the horizontal direction to ensure that the sheath material can pass smoothly through the water inlet pipe 15 when the discharge end of the extruder 2 is extruding the sheath material. Eight nozzles 16 arranged radially are welded on the annular sidewall of each water inlet pipe 15. The nozzles 16 are atomizing nozzles, and the water flow they spray is in an atomized state. The water flow force can be effectively controlled to ensure that the sheath material will not be subjected to a large impact force due to excessive water pressure during the water cooling operation, thereby preventing the sheath material from shaking.

[0023] In the initial state, the buffer plate 22 maintains a preset reference distance with the distance sensor 25. This distance serves as a reference value for the subsequent self-diagnostic system and is recorded and compared by the controller 4.

[0024] When extruder 1 is needed, the operator first rotates screw 9, drives sliding block 11 to move all the components on it inward until water inlet pipe 15 contacts the discharge end of extrusion head 2. Then, the electric push rod 19 is started through controller 4, and the telescopic end of electric push rod 19 is extended to a suitable length. The position of roller 21 is adjusted so that the rotation trajectory of roller 21 is adapted to the outer diameter of the sheath material. After adjustment, electric push rod 19 is turned off.

[0025] Then connect the external water pipe to the water inlet pipe 15, start the extruder 1, and the extruder 1 starts working so that the discharge end of the extruder head 2 extrudes the sheath material. The extruded sheath material passes through the water inlet pipe 15. At this time, turn on the external water source so that the external water pipe continuously sends water into the water inlet pipe 15. Finally, the water is sprayed onto the surface of the sheath material by the nozzle 16 to achieve water cooling. At the same time, start the servo motor 12. The output shaft of the servo motor 12 drives the gear 13 to rotate clockwise so that it meshes with the gear ring 17. Under the drive of the gear 13, the gear ring 17 drives all the components set on it to rotate counterclockwise.

[0026] After passing through the water inlet pipe 15, the sheath material continues to pass through the toothed ring 17. During the passage through the toothed ring 17, the roller 21 rotates counterclockwise with the toothed ring 17 and continuously contacts different positions on the outer diameter of the sheath material. During contact, the roller 21 is pressed tightly against the outer diameter of the sheath material under the action of the spring 23. During the contact process, once the outer diameter of the sheath material changes (such as becoming larger), the roller 21 is squeezed outward by the sheath material, and the buffer plate 22 moves outward with the roller 21. The spring 23 is compressed. When the buffer plate 22 moves, the distance between it and the distance sensor 25 changes. After detecting this change, the distance sensor 25 generates an electrical signal and transmits it to the controller 4. The controller 4 responds quickly by controlling the buzzer alarm 6 to sound an alarm and simultaneously controlling the alarm light 7 to flash, thereby attracting the operator's attention. The operator can adjust the parameters of the extruder 1 or check the equipment in time according to the alarm to reduce the generation of defective products.

[0027] It is important to note that in order to ensure stable operation of the equipment and avoid interference between components, the rotation mode of the output shaft of the servo motor 12 needs to be set in advance through the controller 4. Specifically, the initial parameters of the clockwise rotation of the output shaft of the servo motor 12 should be set first, including the rotation speed and rotation angle range, so that it can automatically switch to counterclockwise rotation after rotating clockwise for a certain angle.

[0028] When the gear ring 17 rotates counterclockwise to a suitable angle and the electric push rod 19 is about to contact the fixed frame 14, the output shaft of the servo motor 12 immediately switches to counterclockwise rotation, which in turn drives the gear ring 17 to rotate clockwise through the gear 13 (since it was previously rotating counterclockwise, the gear ring 17 rotates in the opposite direction after switching to clockwise rotation), so that the electric push rod 19 avoids the fixed frame 14. This process is repeated. By reasonably controlling the rotation direction and angle of the servo motor 12, it is ensured that the electric push rod 19 will not collide with the fixed frame 14 during operation, thus ensuring the normal progress of the testing process.

Claims

1. An online thickness measuring instrument for cable sheath extrusion, comprising an extruder (1) and an extrusion head (2), the extrusion head (2) being mounted on the upper side of the extruder (1) and having two discharge ends distributed to the left and right, characterized in that: It also includes a fixing ring (3), a controller (4), a fixing block (5), a buzzer (6), an alarm light (7), a guide frame (8), a screw (9), a sliding block (11), and a detection assembly. Two fixing rings (3) are arranged side by side and fixed to the outside of the extruder head (2). The controller (4) is installed on the upper side of the extruder (1) and located below the extruder head (2). Each fixing block (5) is fixed to the top of each fixing ring (3). Each buzzer (6) is installed on one side of each fixing block (5), and each alarm light (7) is installed on the other side of each fixing block (5). At the top, the buzzer (6) and alarm light (7) are electrically connected to the controller (4). One end of each guide frame (8) is fixed to the upper part of each fixed block (5). One end of each screw (9) is rotatably set on the upper part of each fixed block (5), and the other end is rotatably connected to the adjacent guide frame (8). Each sliding block (11) is threaded on the outside of each screw (9) and slidably connected to the adjacent guide frame (8). The length of the threaded area of ​​each screw (9) is consistent with the length of the guide area of ​​each guide frame (8). The detection component is set on the sliding block (11).

2. An online thickness measuring instrument for cable sheath extrusion according to claim 1, characterized in that: The detection assembly includes a servo motor (12), gears (13), a mounting bracket (14), a gear ring (17), an electric push rod (19), a connecting bracket (20), a roller (21), a buffer plate (22), a spring (23), a guide rod (24), and a distance sensor (25). Each servo motor (12) is mounted on each sliding block (11) and electrically connected to the controller (4). Each gear (13) is fixed to the output shaft of each servo motor (12). Each mounting bracket (14) is fixed to the lower part of each sliding block (11). A gear ring (17) is rotatably mounted on the lower part of each mounting bracket (14). The number of gear rings (17) is the same as the number of gears (13), and they mesh one-to-one. Electric push rods (19) are installed on each gear ring (17) and electrically connected to the controller (4). Each electric push rod (19) has a connecting frame (20) fixedly attached to its telescopic end. Multiple guide rods (24) are slidably arranged on each connecting frame (20) along a rectangular direction. Each buffer plate (22) is fixed between one end of each of the multiple guide rods (24). Each roller (21) is rotatably arranged on each buffer plate (22). Each spring (23) is sleeved on the outside of each guide rod (24), and its two ends are fixedly connected to the corresponding connecting frame (20) and the corresponding buffer plate (22) respectively. Each distance sensor (25) is installed on one side of each buffer plate (22) and electrically connected to the controller (4).

3. An online thickness measuring instrument for cable sheath extrusion according to claim 2, characterized in that: It also includes a water inlet pipe (15) and a nozzle (16). Each water inlet pipe (15) is fixed to each fixed bracket (14), with its water inlet end facing forward and having threads. Multiple nozzles (16) arranged radially are fixed to the annular sidewall of each water inlet pipe (15).

4. An online thickness measuring instrument for cable sheath extrusion according to claim 3, characterized in that: The discharge end of the extruder (2), the toothed ring (17), and the water inlet pipe (15) are centered in the horizontal direction.

5. An online thickness measuring instrument for cable sheath extrusion according to claim 4, characterized in that: The other end of each screw (9) is fixed with a pentagonal twist block.

6. An online thickness measuring instrument for cable sheath extrusion according to claim 5, characterized in that: The nozzle (16) is an atomizing nozzle (16).

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