Cable jacket spiral extruder

Abstract

This utility model relates to the technical field of extruders, and in particular to a spiral extruder for cable sheaths, which has a larger contact area between the two conveyor belts and the cable sheath, thus improving the extrusion molding quality of the cable sheath. It includes a mounting frame and an extruder assembly; it also includes two drive wheels, two driven wheels, two conveyor belts, two tensioning wheels, and two molding grooves. The two drive wheels are rotatably mounted at the front of the mounting frame, and the two driven wheels are rotatably mounted at the rear of the mounting frame. One conveyor belt is fitted onto the upper drive wheel and driven wheel, and the other conveyor belt is fitted onto the lower drive wheel and driven wheel. Molding grooves are provided on the outer walls of both conveyor belts. The two tensioning wheels are rotatably mounted in the middle of the mounting frame, and the two tensioning wheels respectively tension the two conveyor belts outwards. The portions of the two conveyor belts located between the two drive wheels and the two driven wheels are opposite to and pressed together.

Description

Technical Field

[0001] This utility model relates to the technical field of extruders, and in particular to a cable sheath spiral extruder. Background Technology

[0002] Cable sheaths are extruded using an extruder. Various extruders are disclosed in the prior art. For example, Chinese invention patent CN117584423B discloses an extruder for producing cable sheath material with stable output. This extruder includes a cable sheath extruder mounted on a support base. One end of the extruder is connected to an extrusion die, and a die core is fixedly installed inside the extrusion die. A cooling mechanism is fixedly connected to one end of the extrusion die. Two mounting plates are provided on the upper end of the support base. The front and rear sides of the mounting plates are vertical planes, and the left and right sides are arc-shaped surfaces. This invention sets up a mounting plate on one side of the extruder and opens interconnected horizontal limiting grooves, arc-shaped grooves, and horizontal connecting grooves around the perimeter of the mounting plate. A sliding rod is slidably connected within the horizontal limiting groove, horizontal connecting groove, and arc-shaped groove. A semi-annular claw is fixedly connected to the outer end of the sliding rod. After the cable sheath cools and solidifies, the cable sheath is continuously clamped and conveyed through the cooperation of a power mechanism, avoiding problems such as untimely cable sheath conveying that affect product quality.

[0003] However, the above-mentioned semi-circular claw mechanism for clamping and conveying cable sheaths has a small contact area between the claws and the cable sheath. As a result, the claws are prone to leaving clamp marks on the cable sheath before it has cooled and solidified, which affects the extrusion molding quality of the cable sheath. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cable sheath spiral extruder with a larger contact area between the two conveyor belts and the cable sheath, thereby improving the extrusion molding quality of the cable sheath.

[0005] This utility model discloses a spiral extruder for cable sheathing, comprising a mounting frame and an extruder assembly, the extruder assembly being mounted on the mounting frame; it also includes two drive wheels, two driven wheels, two conveyor belts, two tensioning wheels, and two molding grooves. The two drive wheels are rotatably mounted at the front of the mounting frame, arranged vertically opposite each other. The two driven wheels are rotatably mounted at the rear of the mounting frame, also arranged vertically opposite each other. One conveyor belt is fitted onto the upper drive and driven wheels, and the other conveyor belt is fitted onto the lower drive and driven wheels. Molding grooves are provided on the outer walls of both conveyor belts. The two tensioning wheels are rotatably mounted in the middle of the mounting frame. The tensioning rollers tension the two conveyor belts outwards, and the portions of the two conveyor belts located between the two driving rollers and the two driven rollers are opposite and pressed together. During operation, the extruder assembly outputs the cable sheath material and extrudes it through the mold. The formed cable sheath extends into the two molding grooves between the portions of the two conveyor belts located between the two driving rollers and the two driven rollers. The two driving rollers rotate actively, driving the two conveyor belts to rotate, so that the two conveyor belts clamp the cable sheath through the two molding grooves and convey it evenly backwards. Compared with the existing technology, the contact area between the two conveyor belts and the cable sheath is larger, making it less likely to leave scratches on the cable sheath and improving the extrusion quality of the cable sheath.

[0006] Preferably, the assembly also includes a slide table, a screw, and a motor. The slide table is slidably mounted on the rear of the mounting frame, and two driven wheels are rotatably mounted on the slide table, arranged vertically opposite each other. The screw is rotatably mounted on the rear of the mounting frame, and the slide table and screw are threadedly connected. The motor is mounted on the mounting frame, and the output shaft of the motor is driven by the screw. The motor drives the screw to rotate, and the screw drives the slide table to move back and forth through the thread, thereby adjusting the distance between the two driving wheels and the two driven wheels, and thus adjusting the length of the cable sheaths held by the two conveyor belts, adapting to different specifications of cable sheaths and improving versatility.

[0007] Preferably, the assembly also includes two sliding tables, a double-threaded screw, and a motor. The two sliding tables are slidably mounted in the middle of the mounting frame. Two tensioning wheels are rotatably mounted on the two sliding tables. The double-threaded screw is rotatably mounted on the mounting frame, with its upper and lower parts connected to the two sliding tables via positive and negative threads, respectively. The motor is mounted on the mounting frame, and its output shaft is connected to the double-threaded screw via a transmission connection. When adjusting the distance between the two driving wheels and the two driven wheels, the motor drives the double-threaded screw to rotate. The positive and negative threads of the double-threaded screw drive the two sliding tables to rise and fall relative to each other, thereby maintaining tension on the two conveyor belts by the two tensioning wheels.

[0008] Preferably, it also includes a cooling box and a cold air blower. The cooling box is installed in the middle of the mounting frame and is fitted on the outside of the portion of the two conveyor belts located between the two drive wheels and the two driven wheels. The cold air blower is installed on the cooling box. The cold air blower delivers cold air into the cooling box, so that the cold air cools the portion of the two conveyor belts located between the two drive wheels and the two driven wheels, thereby accelerating the cooling and forming of the portion of the cable sheath that is clamped and conveyed.

[0009] Preferably, it also includes a temperature sensor, which is installed on the cooling box and is used to detect the temperature inside the cooling box. The temperature sensor is electrically connected to the air cooler. When the temperature inside the cooling box is low, the air cooler reduces its power and when the temperature is high, the air cooler increases its power to keep the temperature inside the cooling box stable.

[0010] Preferably, the system also includes multiple upper marking plates, multiple lower marking plates, and a detection unit. The upper marking plates are mounted on the side wall of the upper conveyor belt, and the lower marking plates are mounted on the side wall of the lower conveyor belt. The upper and lower marking plates are aligned vertically. The detection unit is mounted on a cooling box and detects the alignment of the upper and lower marking plates. The detection unit is a vision inspection mechanism or a photoelectric sensor. When the detection unit is a vision inspection mechanism, the upper and lower marking plates are marker pieces. When the two conveyor belts rotate, the detection unit visually identifies the alignment of the upper and lower marking plates. When the upper and lower marking plates are aligned vertically, the equipment determines that the two conveyor belts are rotating synchronously. When multiple upper and lower label plates are aligned vertically, the equipment determines that the two conveyor belts are rotating out of sync. The two drive wheels adjust their speeds according to the staggered arrangement of the upper and lower label plates, thus restoring the two conveyor belts to synchronous rotation. Similarly, when the detection unit is a photoelectric sensor and the upper and lower label plates act as reflectors, the detection unit determines whether the two conveyor belts are rotating synchronously based on the time difference between the signals reflected from the upper and lower label plates. If the time difference is large, it is determined that the two conveyor belts are rotating out of sync. The two drive wheels adjust their speeds according to the time difference between the reflected signals from the upper and lower label plates, thus restoring the two conveyor belts to synchronous rotation. This improves the conveying stability of the cable sheath.

[0011] Preferably, the device also includes a lever, a limit switch, and an inkjet printer. The lever is mounted on the side wall of the conveyor belt, the limit switch is mounted on the cooling box, the contact arm of the limit switch is aligned with the lever, and the inkjet printer is mounted at the rear of the mounting frame and is electrically connected to the limit switch. When the conveyor belt rotates, it drives the lever to rotate. Every time the conveyor belt rotates once, the lever collides with the contact arm of the limit switch once, thereby generating an electrical signal. The inkjet printer sprays a mark onto the cable sheath once according to the electrical signal, realizing equidistant cyclic marking.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: During operation, the extruder assembly outputs the cable sheath raw material and extrudes it through the mold. The formed cable sheath extends into the two plastic grooves between the two conveyor belts located between the two driving wheels and the two driven wheels. The two driving wheels actively rotate to drive the two conveyor belts to rotate, so that the two conveyor belts clamp the cable sheath through the two plastic grooves and transport it backward evenly. Compared with the prior art, the contact area between the two conveyor belts and the cable sheath is larger, and it is not easy to leave scratches on the cable sheath, thus improving the extrusion molding quality of the cable sheath. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the left axonometric structure of this utility model;

[0016] Figure 4 It is a structural diagram of the mounting bracket, drive wheel, driven wheel, and tension wheel, etc.

[0017] Figure 5 It is a structural diagram of the conveyor belt, upper label plate, lower label plate, and detection unit, etc.

[0018] Figure 6 It is a structural diagram of conveyor belts, levers, limit switches, and inkjet printers.

[0019] The following are labels in the attached diagram: 1. Mounting bracket; 2. Extruder assembly; 3. Drive wheel; 4. Driven wheel; 5. Conveyor belt; 6. Tensioner wheel; 7. Molding groove; 8. Slide 1; 9. Screw 1; 10. Motor 1; 11. Slide 2; 12. Double threaded screw; 13. Motor 2; 14. Cooling box; 15. Air cooler; 16. Temperature sensor; 17. Upper label plate; 18. Lower label plate; 19. Detection unit; 20. Toggle lever; 21. Limit switch; 22. Inkjet printer. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] like Figures 1 to 4 and Figure 6As shown, a cable sheath spiral extruder includes a mounting frame 1 and an extruder assembly 2, with the extruder assembly 2 mounted on the mounting frame 1. It also includes two drive wheels 3, two driven wheels 4, two conveyor belts 5, two tensioning wheels 6, and two molding grooves 7. The two drive wheels 3 are rotatably mounted at the front of the mounting frame 1, arranged vertically opposite each other. The two driven wheels 4 are rotatably mounted at the rear of the mounting frame 1, also arranged vertically opposite each other. A conveyor belt 5 is fitted around the upper drive wheels 3 and driven wheels 4. Above, another conveyor belt 5 is mounted on the driving pulley 3 and driven pulley 4 located below. Both conveyor belts 5 have molded grooves 7 on their outer walls. Two tensioning pulleys 6 are rotatably mounted in the middle of the mounting frame 1, tensioning the two conveyor belts 5 outwards. The portions of the two conveyor belts 5 located between the two driving pulleys 3 and the two driven pulleys 4 are opposite to and pressed together. The system also includes a slide table 8, a screw 9, and a motor 10. The slide table 8 is slidably mounted on the rear of the mounting frame 1, and the two driven pulleys 4 are rotatably mounted on the slide table 8. Above, two driven wheels 4 are arranged vertically opposite each other. A screw 9 is rotatably mounted at the rear of the mounting frame 1. A slide 8 is threadedly connected to the screw 9. A motor 10 is mounted on the mounting frame 1, and the output shaft of the motor 10 is drively connected to the screw 9. The mounting frame also includes two slides 11, a double-threaded screw 12, and a motor 13. The two slides 11 are slidably mounted in the middle of the mounting frame 1. Two tensioning wheels 6 are rotatably mounted on the two slides 11 respectively. The double-threaded screw 12 is rotatably mounted on the mounting frame 1. The upper and lower parts of the threaded screw 12 are respectively connected to two slide tables 11 via positive and negative threads. The motor 13 is mounted on the mounting bracket 1, and the output shaft of the motor 13 is connected to the double-threaded screw 12 for transmission. It also includes a lever 20, a limit switch 21 and an inkjet printer 22. The lever 20 is mounted on the side wall of the conveyor belt 5, the limit switch 21 is mounted on the cooling box 14, the contact arm of the limit switch 21 is aligned with the lever 20, and the inkjet printer 22 is mounted on the rear of the mounting bracket 1 and is electrically connected to the limit switch 21.

[0023] Motor 10 drives screw 9 to rotate. Screw 9, through its threaded action, drives slide 8 to move back and forth, thereby adjusting the distance between the two driving wheels 3 and the two driven wheels 4. This, in turn, adjusts the length of the cable sheath held by the two conveyor belts 5, accommodating cable sheaths of different specifications. While adjusting the distance between the two driving wheels 3 and the two driven wheels 4, motor 23 drives double-threaded screw 12 to rotate. The positive and negative threads of double-threaded screw 12 drive the two slides 21 to rise and fall relative to each other, thus keeping the two tensioning wheels 6 tensioning the two conveyor belts 5. During operation, the extruder assembly 2 outputs the cable sheath material and extrudes it through a mold. The formed cable sheath extends into the two conveyor belts 5. Between the two driving wheels 3 and the two driven wheels 4, in the two molding grooves 7, the two driving wheels 3 actively rotate to drive the two conveyor belts 5 to rotate, so that the two conveyor belts 5 clamp the cable sheath through the two molding grooves 7 and convey it evenly backward. When the conveyor belts 5 rotate, they drive the lever 20 to rotate. Every time the conveyor belts 5 rotate once, the lever 20 collides with the contact arm of the limit switch 21 once, thereby generating an electrical signal. The inkjet printer 22 sprays a mark on the cable sheath once according to the electrical signal, realizing equidistant cyclic marking. Compared with the existing technology, the contact area between the two conveyor belts 5 and the cable sheath is larger, and it is not easy to leave scratches on the cable sheath, thus improving the extrusion molding quality of the cable sheath.

[0024] Example 2

[0025] like Figures 1 to 3 As shown, based on Embodiment 1, it also includes a cooling box 14 and a cooler 15. The cooling box 14 is installed in the middle of the mounting frame 1. The cooling box 14 is fitted on the outer side of the two conveyor belts 5 located between the two driving wheels 3 and the two driven wheels 4. The cooler 15 is installed on the cooling box 14. It also includes a temperature sensor 16, which is installed on the cooling box 14. The temperature sensor 16 is used to detect the temperature inside the cooling box 14. The temperature sensor 16 is electrically connected to the cooler 15.

[0026] The air cooler 15 delivers cold air into the cooling box 14, which cools the part of the two conveyor belts 5 located between the two driving wheels 3 and the two driven wheels 4, so that the part of the cable sheath that is clamped and conveyed cools and forms faster. The temperature sensor 16 detects the temperature inside the cooling box 14. When the temperature is low, the air cooler 15 reduces the power and when the temperature is high, the air cooler 15 increases the power to keep the temperature inside the cooling box 14 stable.

[0027] Example 3

[0028] like Figures 1 to 3 and Figure 5As shown, based on Embodiment 1, it also includes multiple upper label plates 17, multiple lower label plates 18, and a detection unit 19. The multiple upper label plates 17 are installed on the side wall of the upper conveyor belt 5, and the multiple lower label plates 18 are installed on the side wall of the lower conveyor belt 5. The multiple upper label plates 17 and multiple lower label plates 18 are aligned vertically. The detection unit 19 is installed on the cooling box 14 and detects the alignment of the multiple upper label plates 17 and multiple lower label plates 18.

[0029] The detection unit 19 is a visual inspection mechanism or a photoelectric sensor. When the detection unit 19 is a visual inspection mechanism, the multiple upper label plates 17 and multiple lower label plates 18 are marker pieces. When the two conveyor belts 5 rotate, the detection unit 19 visually identifies the alignment of the multiple upper label plates 17 and multiple lower label plates 18. When the multiple upper label plates 17 and multiple lower label plates 18 are aligned vertically, the equipment determines that the two conveyor belts 5 are rotating synchronously. When the multiple upper label plates 17 and multiple lower label plates 18 are aligned vertically one by one, the equipment determines that the two conveyor belts 5 are rotating asynchronously. The two drive wheels 3 adjust their positions based on the alignment of the multiple upper label plates 17 and multiple lower label plates 18. 18. Adjust the rotation speed in the case of staggered rotation to restore the synchronous rotation of the two conveyor belts 5. Similarly, when the detection unit 19 is a photoelectric sensor, the multiple upper marking plates 17 and multiple lower marking plates 18 are reflectors. The detection unit 19 determines whether the two conveyor belts 5 are rotating synchronously based on the time difference of the signals reflected by the upper marking plates 17 and the lower marking plates 18. When the time difference is large, it is determined that the two conveyor belts 5 are rotating asynchronously. The two drive wheels 3 adjust the rotation speed based on the time difference of the signals reflected by the multiple upper marking plates 17 and the multiple lower marking plates 18 to restore the synchronous rotation of the two conveyor belts 5. This improves the conveying stability of the cable sheath.

[0030] like Figures 1 to 6 As shown, this utility model discloses a cable sheath spiral extruder. During operation, the extruder assembly 2 first outputs cable sheath raw material and extrudes it through a mold. The formed cable sheath extends into two molding grooves 7 located between two driving wheels 3 and two driven wheels 4 on two conveyor belts 5. Then, the two driving wheels 3 actively rotate, driving the two conveyor belts 5 to rotate, causing the two conveyor belts 5 to clamp the cable sheath through the two molding grooves 7 and convey it evenly backward. A cooling fan 15 delivers cold air into the cooling box 14, so that the cold air cools the two conveyor belts 5 located between the two driving wheels 3 and two driven wheels 4. The section between the driving wheel 3 and the two driven wheels 4 is cooled to accelerate the cooling and molding of the part of the cable sheath that is clamped and conveyed. Then, the detection unit 19 detects the alignment of multiple upper marking plates 17 and multiple lower marking plates 18 and adjusts the speed of the two driving wheels 3 to keep the two conveyor belts 5 rotating synchronously. Finally, when the conveyor belt 5 rotates, it drives the lever 20 to rotate. Every time the conveyor belt 5 rotates, the lever 20 collides with the contact arm of the limit switch 21 once, thereby generating an electrical signal. The inkjet printer 22 sprays a mark on the cable sheath once according to the electrical signal, so as to achieve equidistant cyclic marking.

[0031] The main functions achieved by this utility model are:

[0032] 1. The two conveyor belts 5 have a larger contact area with the cable sheath, making it less likely to leave scratches on the cable sheath and improving the extrusion molding quality of the cable sheath.

[0033] 2. The length of the cable sheath held by the two conveyor belts can be adjusted to accommodate different specifications of cable sheaths, thus improving versatility;

[0034] 3. The air cooler 15 delivers cold air into the cooling box 14, so that the cold air cools the part of the two conveyor belts 5 located between the two driving wheels 3 and the two driven wheels 4, so that the part of the cable sheath that is clamped and conveyed cools and forms faster.

[0035] 4. It can automatically adjust the rotation of the two conveyor belts 5 to keep them rotating synchronously.

[0036] The cable sheath spiral extruder of this utility model uses common mechanical methods for installation, connection, or setup, and can be implemented as long as it achieves the desired beneficial effect. The mounting frame 1, extruder assembly 2, drive wheel 3, driven wheel 4, conveyor belt 5, tension wheel 6, slide table 1, screw 1 9, motor 10, slide table 2 11, double-threaded screw 12, motor 2 13, cooling box 14, air cooler 15, temperature sensor 16, upper label plate 17, lower label plate 18, detection unit 19, limit switch 21, and inkjet printer 22 are all commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative effort from those skilled in the art.

[0037] 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cable sheathing extruder comprising a mounting frame (1) and an extruder assembly (2) mounted on the mounting frame (1); characterised in that, It also includes two drive wheels (3), two driven wheels (4), two conveyor belts (5), two tensioning wheels (6) and two molding grooves (7). The two drive wheels (3) are rotatably mounted on the front of the mounting frame (1) and are arranged vertically opposite each other. The two driven wheels (4) are rotatably mounted on the rear of the mounting frame (1) and are arranged vertically opposite each other. One conveyor belt (5) is fitted on the upper drive wheel (3) and driven wheel (4), and the other conveyor belt (5) is fitted on the lower drive wheel (3) and driven wheel (4). Molding grooves (7) are provided on the outer walls of both conveyor belts (5). The two tensioning wheels (6) are rotatably mounted in the middle of the mounting frame (1). The two tensioning wheels (6) respectively tension the two conveyor belts (5) outward. The portions of the two conveyor belts (5) located between the two drive wheels (3) and the two driven wheels (4) are opposite to each other and pressed together.

2. A cable jacket spiral extruder as claimed in claim 1, wherein, It also includes a slide table (8), a screw (9) and a motor (10). The slide table (8) is slidably mounted on the rear of the mounting frame (1). Two driven wheels (4) are rotatably mounted on the slide table (8) and arranged vertically opposite each other. The screw (9) is rotatably mounted on the rear of the mounting frame (1). The slide table (8) and the screw (9) are threadedly connected. The motor (10) is mounted on the mounting frame (1) and the output shaft of the motor (10) is connected to the screw (9) in a transmission.

3. The cable sheath spiral extruder as described in claim 2, characterized in that, It also includes two slides (11), a double-threaded screw (12) and a motor (13). The two slides (11) are slidably mounted in the middle of the mounting frame (1). Two tensioning wheels (6) are rotatably mounted on the two slides (11). The double-threaded screw (12) is rotatably mounted on the mounting frame (1). The upper and lower parts of the double-threaded screw (12) are respectively connected to the two slides (11) through positive and negative threads. The motor (13) is mounted on the mounting frame (1). The output shaft of the motor (13) is connected to the double-threaded screw (12) for transmission.

4. The cable sheath spiral extruder as described in claim 1, characterized in that, It also includes a cooling box (14) and a cold air blower (15). The cooling box (14) is installed in the middle of the mounting frame (1). The cooling box (14) is fitted on the outer side of the two conveyor belts (5) located between the two drive wheels (3) and the two driven wheels (4). The cold air blower (15) is installed on the cooling box (14).

5. A cable sheath spiral extruder as described in claim 4, characterized in that, It also includes a temperature sensor (16), which is installed on the cooling box (14) and is used to detect the temperature inside the cooling box (14). The temperature sensor (16) is electrically connected to the air cooler (15).

6. A cable sheath spiral extruder as described in claim 1, characterized in that, It also includes multiple upper label plates (17), multiple lower label plates (18) and a detection unit (19). The multiple upper label plates (17) are installed on the side wall of the upper conveyor belt (5), and the multiple lower label plates (18) are installed on the side wall of the lower conveyor belt (5). The multiple upper label plates (17) and multiple lower label plates (18) are aligned vertically. The detection unit (19) is installed on the cooling box (14) and the detection unit (19) detects the alignment of the multiple upper label plates (17) and multiple lower label plates (18).

7. A cable sheath spiral extruder as described in claim 1, characterized in that, It also includes a lever (20), a limit switch (21) and an inkjet printer (22). The lever (20) is installed on the side wall of the conveyor belt (5), the limit switch (21) is installed on the cooling box (14), the contact arm of the limit switch (21) is aligned with the lever (20), and the inkjet printer (22) is installed at the rear of the mounting bracket (1). The inkjet printer (22) is electrically connected to the limit switch (21).

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