Multi-stage explosion-proof and precise temperature control wrapping structure of a detonating cord manufacturing machine

Abstract

The application relates to the production technology field of detonating cord, and particularly discloses a multi-stage explosion-proof and precise temperature control wrapping structure of a detonating cord manufacturing machine, which comprises a medicine bucket unit, an explosion-proof unit, an inner layer wrapping unit, a middle layer wrapping unit, an outer layer wrapping unit, a detonating cord steering and wire diameter detection unit and a PLC control module; the explosion-proof unit is installed below the medicine bucket unit and is used for clamping the rubber tube of the medicine bucket unit; the inner layer wrapping unit, the middle layer wrapping unit and the outer layer wrapping unit are all provided with temperature sensors for detecting the temperature during wire wrapping; the detonating cord steering and wire diameter detection unit comprises a wire diameter detector; the explosion-proof unit, the temperature sensors and the wire diameter detector are all connected with the PLC control module; the wire wrapping temperature is detected in real time; the wire wrapping temperature is alarmed and stopped when exceeding the safety range; the diameter of the detonating cord is monitored in real time; the diameter is alarmed and stopped when exceeding the safety value, and the temperature sensors are activated for secondary checking; if the temperature is abnormal, the explosion-proof unit is started, continuous explosion is effectively avoided, and the safety protection performance is good.

Description

Technical Field

[0001] This invention relates to the field of detonating cord production technology, specifically to a multi-stage explosion-proof and precise temperature-controlled wrapping structure for a detonating cord making machine. Background Technology

[0002] Detonating cord is a linear blasting material that transmits detonation waves and simultaneously detonates multiple explosive charges. Its core is a high-energy explosive core, wrapped with an outer moisture-proof protective layer. It is detonated using detonators and is widely used in mining, tunneling, water conservancy, demolition blasting and other scenarios. Detonating cord making machines are specialized core equipment in the civilian blasting materials industry for the continuous automated production of industrial detonating cords. They can integrate raw materials such as explosive cores, cotton threads, plastics, and asphalt into finished detonating cords.

[0003] In existing technologies, such as the patent with publication number CN210560159U, a detonating cord making machine is disclosed. Its core architecture still adopts a centralized mechanical transmission scheme: four sets of guide plates (from the first to the fourth plate) are connected to the first to fourth drive shafts respectively, forming a vertical and horizontal composite transmission mechanism. The power shaft drives the four drive shafts to transmit power to the winding mechanism via sprockets. Although the device improves the transmission smoothness through the combination of spiral bevel gears and helical gears, it is essentially a modified version of the traditional mechanical transmission structure and has the following defects: the level of intelligence lags behind industrial standards. Although the device is equipped with a rotation sensor to realize the wire breakage alarm function, the sensor only covers the wire core conveying link and does not extend to the quality monitoring of the wrapping process. Specifically: there is a lack of an online wire diameter detection device, making it impossible to identify dimensional deviations caused by abnormal wrapping tension in real time; temperature monitoring is limited to a single sensor at the end of the trigger rod, making it difficult to accurately reflect the risk of heat accumulation during the multi-layer wrapping process; human-machine interaction is only achieved by manually switching the worm gear reducer to adjust the speed, without a closed-loop control system to support automatic optimization of process parameters; and there is a lack of reliable explosion-proof devices, making it easy for the explosion risk to spread and cause chain accidents. The aforementioned defects result in poor safety protection performance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical problem solved by this invention is to provide a multi-stage explosion-proof and precise temperature-controlled wrapping structure for a detonating cord making machine, thereby solving the problem of poor safety protection performance of existing detonating cord making machines.

[0005] To solve the above problems, the technical solution adopted by the present invention is: a multi-stage explosion-proof and precise temperature-controlled wrapping structure for a detonating cord making machine, including a hopper unit, an explosion-proof unit, an inner wrapping unit, a middle wrapping unit, an outer wrapping unit, a detonating cord steering and diameter detection unit, and a PLC control module. The explosion-proof unit is installed below the hopper unit and is used to clamp the rubber tube of the hopper unit to prevent continuous explosions. The inner, middle, and outer wrapping units are all equipped with temperature sensors to detect the temperature during winding. If the temperature exceeds the safe range, an alarm will sound and the machine will stop. The detonating cord steering and diameter detection unit includes a diameter detector, which is used to monitor the diameter of the detonating cord in real time. If the diameter exceeds the safe value, an alarm will sound and the machine will stop immediately, and the temperature sensor will be activated for secondary verification. If the temperature is abnormal, the explosion-proof unit will be activated. The explosion-proof unit, temperature sensor, and diameter detector are all connected to the PLC control module. The PLC control module integrates a human-machine interface to realize parameter setting, fault alarm, and production process monitoring.

[0006] Furthermore, the hopper unit includes a winding disc, a hopper II, and a hose. The hopper II is mounted on the winding disc, and the hose is located below the winding disc. The hose contains a core layer wrapping wire. The explosion-proof unit is mounted below the winding disc via a bracket II. The hopper unit also includes a weighing sensor, which is connected to a PLC control module to achieve automatic dosing.

[0007] Furthermore, the explosion-proof unit includes cylinder I and cylinder II connected in series. Cylinder I is responsible for extending and retracting along the length of the explosion-proof unit, and cylinder II is responsible for clamping the detonating cord tubing along the width of the explosion-proof unit. Cylinder I and cylinder II are connected to a PLC control module.

[0008] Furthermore, the cylinder I and cylinder II of the explosion-proof unit are connected by a quick-connect air connector, with a response time of no more than 0.3 seconds.

[0009] Furthermore, the inner layer wrapping unit, the middle layer wrapping unit, and the outer layer wrapping unit are each driven by an independent servo motor to perform independent wrapping operations on a synchronous pulley group. Each of the inner layer wrapping unit, the middle layer wrapping unit, and the outer layer wrapping unit is equipped with a tension controller. The servo motor and the tension controller are connected to a PLC control module to achieve independent automatic control.

[0010] Furthermore, the PLC control module integrates a human-machine interface to enable parameter setting, fault alarms, and production process monitoring.

[0011] Furthermore, the wire diameter tester uses a laser scanning measuring head with a detection accuracy of not less than ±0.1mm.

[0012] Furthermore, the explosion-proof unit is an electric gripper, which includes a support, a left gripper, a right gripper, and an electric telescopic rod. The support is installed at the bottom of a first-layer winding reel, the right gripper is fixedly installed on the support, and the left gripper is slidably installed on the support. The telescopic end of the electric telescopic rod is fixedly connected to the left gripper, and the electric telescopic rod is connected to a PLC control module. The left and right grippers are located on both sides of the hose, and each of the left and right grippers is provided with a clamping block. The clamping block is at a predetermined distance from the hose, and the cross-section of the clamping block is triangular, with one of the opposite sides of the two clamping blocks being a rounded corner.

[0013] Compared to existing technologies, the advantages of this solution are: 1. Through the coordinated operation of the explosion-proof unit, the wrapping unit, and the detonating cord turning and wire diameter detection unit, the winding temperature can be detected in real time. If the temperature exceeds the safe range, an alarm will be triggered and the machine will stop. The diameter of the detonating cord can be monitored in real time. If the diameter exceeds the safe value, an alarm will be triggered and the machine will stop and the temperature sensor will be activated for secondary verification. If the temperature is abnormal, the explosion-proof unit will be activated to clamp the rubber tube of the explosive hopper unit, which effectively avoids continuous explosions and has good safety protection performance. 2. The multi-level wrapping unit is set up, which has high working efficiency. The use of weighing sensors in conjunction with the automatic feeding system can accurately and continuously feed materials without stopping the machine, thereby increasing output and ensuring production continuity. The use of wire diameter detectors, tension controllers, and temperature sensors to monitor and improve product quality has been improved. Each wrapping unit is equipped with a temperature sensor to detect the winding temperature in real time, which can accurately collect the temperature throughout the entire wrapping process. The use of automated control in the production process has achieved separation of man and machine, reducing the number of operators and lowering safety risks. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a detonating cord securing machine. Figure 2 This is a schematic diagram of the structure of the medicine hopper unit of the present invention; Figure 3 This is a schematic diagram of the explosion-proof unit of the present invention; Figure 4 This is a schematic diagram of the inner layer wrapping unit of the present invention; Figure 5 This is a schematic diagram of the structure of the middle layer wrapping unit of the present invention; Figure 6 This is a schematic diagram of the structure of the detonating cord steering and wire diameter detection unit of the present invention; Figure 7 , 8 This is a schematic diagram of the outer wrapping unit of the present invention; Figure 9 This is a schematic diagram of the structure of the draw wire unit of the present invention; Figure 10 This is a schematic diagram of the drive unit of the present invention; Figure 11 This is a schematic diagram of the structure of the cabling unit of the present invention; Figure 12 This is a schematic diagram of the structure of the take-up unit of the present invention; Figure 13 This is a schematic diagram of the explosion-proof unit according to Embodiment 2 of the present invention; In the diagram: Main frame 1, take-up frame 2, hopper unit 100, explosion-proof unit 200, inner wrapping unit 300, middle wrapping unit 400, detonating cord steering and diameter detection unit 500, outer wrapping unit 600, pull-line unit 700, drive unit 800, wire laying unit 900, take-up unit 1000, hopper I 101; weighing sensor 102; support column I 103; weighing sensor mounting plate 104; first layer winding reel 105; support column II 106, hopper II 107; bracket I 108; packaging. Membrane fixture 109; core layer wrapping line 110; bobbin I 111; tension controller I 112; fixed shaft I 113; hose 114; bracket II 201; cylinder I 202; cylinder II 203; mounting base I 301; second-layer winding disc 302; synchronous pulley I 303; rotating shaft I 304; synchronous pulley II 305; reducer I 306; servo motor I 307; bracket III 308; synchronous belt I 309; wire guide mechanism I 310; sensor bracket I 311; temperature sensor I 312; bobbin II 313; tension Controller II 314, Fixed Shaft II 315, Inner Layer Wrapping Wire 316, Mounting Base II 401, Three-Layer Wrapping Reel 402, Synchronous Belt Pulley III 403, Rotating Shaft II 404, Synchronous Belt Pulley IV 405, Reducer II 406, Servo Motor II 407, Bracket IV 408, Synchronous Belt II 409, Wire Mechanism II 410, Sensor Bracket II 411, Temperature Sensor II 412, Wire Bollard III 413, Tension Controller III 414, Fixed Shaft III 415, Middle Layer Wrapping Wire 416, Wire Diameter Detector 501, Bracket V 502, Rotary 503, 504, 505, 506, 507, 508, 508, 509, 601, 602, 603, 604, 605, 606, 607, 608, 608, 609, 608, 609, 610, 611, 612, 613, 614; 615, 606, 608, 609, 610, 611, 612, 613, 614;Fixed shaft IV 615, outer layer wrapping wire 616, winding reel 701, rotating shaft V 702, bearing housing II 703, flat pulley III 704, flat pulley IV 705, belt II 706, drive shaft II 707, gear II 708, encoder 709, drive motor I 801, gear III 802, gear IV 803, synchronous pulley VII 804, synchronous pulley VIII 805, drive shaft III 806, synchronous belt IV 807, cable guide 901, Sprocket I; 902, Drive Motor II; 903, Sprocket II; 904, Chain I; 905, Cable Breaker; 906, Cylinder III; 907, Reel; 1001, Drive Shaft; 1002, Sprocket III; 1003, Chain II; 1004, Driven Rotating Shaft; 1005, Cylinder IV; 1006, Hand Valve; 1007, Support; 1101, Left Clamp; 1102, Right Clamp; 1103, Electric Telescopic Rod; 1104, Clamping Block; 1105. Detailed Implementation

[0015] 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.

[0016] Example 1 is attached. Figures 1 to 12 As shown: A multi-stage explosion-proof and precise temperature-controlled wrapping structure for a detonating cord making machine includes a hopper unit 100, an explosion-proof unit 200, an inner wrapping unit 300, a middle wrapping unit 400, a detonating cord steering and diameter detection unit 500, and an outer wrapping unit 500.

[0017] like Figure 1 As shown, the explosive charge unit 100, explosion-proof unit 200, inner layer wrapping unit 300, middle layer wrapping unit 400, detonating cord turning and wire diameter detection unit 500, and outer layer wrapping unit 500 are respectively fixed on the main frame 1 of the detonating cord making machine. The main frame 1 is also provided with a wire pulling unit 700 and a drive unit 800. The detonating cord making machine also includes a wire take-up frame 2, which is provided with a wire laying unit 900 and a wire take-up unit 1000.

[0018] The structure of the medicine hopper unit 100 is as follows: Figure 2As shown, the medicine hopper I 101 is connected to the weighing sensor 102 via a support column I 103. The support column 103 is fixed to the weighing sensor 102, which is fixed to the weighing sensor mounting plate 104. The weighing sensor mounting plate 104 is connected to the first-layer winding disc 105 via a support column II 106. The medicine hopper II 107 is mounted on the first-layer winding disc 105. The first-layer winding disc 105 is mounted on the main frame 1 of the machine frame via a bracket I 108. The packaging film fixture 109 is mounted on the bracket I 108. The core layer wrapping thread 110 is on the spool I 111. The spool I 111 and the tension controller I 112 are mounted on a fixed shaft I 113. 113 is installed on a winding disc 105. Weighing sensor 102 measures the weight of gunpowder in gunpowder hopper I 101 to determine whether gunpowder needs to be added. Borehole I 111 rotates and winds the wire on fixed shaft I 113. The winding quality is controlled and detected by tension controller I 112. Gunpowder is added to the downward gunpowder hopper 107 from the storage hopper 101. Borehole I 111 rotates and winds the wire on fixed shaft I 113. Core layer wrapping wire 110 enters through the reserved inlet of gunpowder hopper II 107 and flows out from the reserved outlet below gunpowder hopper II 107 into packaging film fixture 109. After the core layer wrapping wire 110 is wrapped with polyester film in packaging film fixture 109, it flows out from the rubber tube 114 below packaging film fixture 109.

[0019] The structure of the explosion-proof unit 200 is as follows: Figure 3 As shown, the explosion-proof unit 200 is fixedly connected to a first-layer winding reel 105 via a bracket II 201 and is located below the first-layer winding reel 105. The explosion-proof unit 200 includes a series of cylinders. Cylinder I 202 is mounted on the bracket 201, and cylinder II 203 is mounted on cylinder I 202. It is responsible for clamping the rubber tube 114 along the width direction of the explosion-proof unit. When an explosion occurs, cylinder II 203 clamps the rubber tube 114. After clamping cylinder II 203 clamps the detonating cord rubber tube 114, cylinder I 202 pushes forward to prevent continuous explosions. The cylinders I and II of the explosion-proof unit are connected by a quick-connect air connector. The response time is no more than 0.3 seconds. Specifically, cylinder I can be an Airtac triaxial cylinder, model TCM20×30S, and cylinder II can be an Airtac pneumatic finger cylinder, model HFK20(CL), which has a fast response speed.

[0020] The structure of the inner layer wrapping unit 300 is as follows: Figure 4As shown, the inner layer wrapping unit 300 is mounted on the main frame 1 via mounting base I 301, the second layer winding disc 302 is mounted on mounting base I 301, the synchronous pulley I 303 is mounted on the rotating shaft 304 I, the synchronous pulley II 305 is mounted on the reducer I 306, the servo motor I 307 is mounted together with the reducer I 306, the reducer 306 I is mounted on the bracket III 308, the synchronous pulley I 303 and the synchronous pulley II 305 are connected by the synchronous belt I 309, the wire guide mechanism I 310 is mounted on the rotating shaft 304, the sensor bracket I 311 is mounted on the packaging film fixture 109, the temperature sensor I 312 is mounted on the sensor bracket I 311, the bobbin II 313 and the tension controller II 314 are mounted on the fixed shaft 315, and the fixed shaft 315 is mounted on the second layer winding disc 302.

[0021] The inner layer of the wrapping wire 316 is inserted into the conductor mechanism I 310. The temperature sensor I 312 is used to detect when the temperature exceeds the safe range during winding and to trigger an alarm to stop the machine. The winding quality is controlled and detected by the tension controller II 314. The servo motor I 307 drives the synchronous pulley II 305 to rotate. The synchronous pulley II 305 drives the rotating shaft I 304 to rotate via the synchronous belt I 309. The inner layer of the wrapping wire 316 is on the bobbin II 313. The bobbin II 313 is on the fixed shaft II 315 and is driven to rotate by the conductor mechanism I 310 mounted on the rotating shaft 304 I.

[0022] The structure of the middle layer wrapping unit 400 is as follows: Figure 5 As shown, the middle layer winding unit 400 is mounted on the main frame 1 via mounting base II 401, the three-layer winding disc 402 is mounted on mounting base II 401, the synchronous pulley III 403 is mounted on the rotating shaft II 404, the synchronous pulley IV 405 is mounted on the reducer II 406, the servo motor II 407 is mounted together with the reducer II 406, the reducer II 406 is mounted on the bracket IV 408, the synchronous pulley III 403 and the synchronous pulley IV 405 are connected by the synchronous belt II 409, the wire mechanism II 410 is mounted on the rotating shaft II 404, the sensor bracket II 411 is mounted on mounting base I 301, the temperature sensor II 412 is mounted on the sensor bracket II 411, the bobbin III 413 and the tension controller III 414 are mounted on the fixed shaft III 415, and the fixed shaft III 415 is mounted on the three-layer winding disc 402.

[0023] The middle layer of wrapped wire 416 is inserted into the conductor mechanism II 410. Temperature sensor II 412 is used to detect when the temperature exceeds the safe range during winding and to trigger an alarm to stop the machine. The winding quality is controlled and detected by tension controller III 414. Servo motor II 407 drives synchronous pulley IV 405 to rotate. Synchronous pulley IV 405 drives rotating shaft II 404 to rotate via synchronous belt II 409. The middle layer of wrapped wire 416 is on spool III 413. Spool III 413 is on fixed shaft III 415 and is driven to rotate by conductor mechanism II 410 mounted on rotating shaft II 404.

[0024] The structure of the detonating cord steering and wire diameter detection unit 500 is as follows: Figure 6 As shown, the wire diameter tester 501 is mounted on the main frame 1 via bracket V 502, the steering wheel 503 is mounted on the bearing seat I 505 via the rotating shaft III 504, the flat pulley I 506 is mounted on the rotating shaft III 504, the flat pulley I 506 and the flat pulley II 507 are connected by the belt I 508, the flat pulley II 507 is mounted on the drive shaft I 509, and the gear I 510 is mounted on the drive shaft I 509.

[0025] The wire diameter detector 501 immediately alarms and stops the machine when the wire diameter exceeds the safety value during the wire-making process. The wire diameter detector 501 uses a laser scanning measuring head with a detection accuracy of no less than ±0.1mm. When the drive motor I 801 on the drive unit 800 rotates, it drives the gear III 802 to rotate. Gear III 802 meshes with gear I 510, driving the drive shaft I 508 to rotate. The drive shaft I 509 I drives the flat pulley II 507 to rotate. The flat pulley I 506 is driven to rotate by the flat pulley II 507 via the belt I 508. The steering wheel 503 follows the rotation of the flat pulley I 506, changing the detonating cord from a vertical to a horizontal direction. When the diameter of the detonating cord is detected to exceed the tolerance range, the PLC controller triggers the following linkage action: N1. Pause the current layer wrapping operation; N2. Adjust the dispensing rate of the corresponding medicine hopper unit; N3. Activate the temperature sensor for secondary verification. If the temperature is abnormal, the emergency response of the explosion-proof unit will be activated simultaneously.

[0026] The structure of the outer wrapping unit 600 is as follows: Figure 7 , 8As shown, the outer wrapping unit 600 is mounted on the main frame 1 via mounting base Ⅲ 601, the four-layer winding disc 602 is mounted on mounting base Ⅲ 601, the synchronous pulley Ⅴ 603 is mounted on the rotating shaft Ⅳ 604, the synchronous pulley Ⅵ 605 is mounted on the reducer Ⅲ 606, the servo motor Ⅲ 607 is mounted together with the reducer Ⅲ 606, the reducer Ⅲ 606 is mounted on bracket Ⅵ 608, the synchronous pulley Ⅴ 603 and the synchronous pulley Ⅵ 605 are connected by the synchronous belt Ⅲ 609, the wire mechanism Ⅲ 610 is mounted on the rotating shaft Ⅳ 604, the sensor bracket Ⅲ 611 is mounted on the main frame 1, the temperature sensor Ⅲ 612 is mounted on the sensor bracket Ⅲ 611, the bobbin Ⅳ 613 and the tension controller Ⅳ 614 are mounted on the fixed shaft Ⅳ 615, and the fixed shaft Ⅳ 615 is mounted on the four-layer winding disc 602.

[0027] The outer layer of wrapping wire 616 is inserted into the wire winding mechanism Ⅲ610. The temperature sensor Ⅲ612 is used to detect when the temperature exceeds the safe range during winding and to trigger an alarm and stop the machine. The winding quality is controlled and detected by the tension controller Ⅳ614. The servo motor Ⅲ607 drives the synchronous pulley Ⅵ605 to rotate. The synchronous pulley Ⅵ605 drives the rotating shaft Ⅳ604 to rotate via the synchronous belt Ⅲ609. The outer layer of wrapping wire 616 is on the spool Ⅳ613. The spool Ⅳ613 is mounted on the fixed shaft Ⅳ615 and driven to rotate by the wire winding mechanism Ⅲ610 on the rotating shaft Ⅳ6044.

[0028] The structure of the wire drawing unit 700 is as follows: Figure 9 As shown, the winding reel 701 is mounted on bearing housing II 703 via rotating shaft V 702. Bearing housing II 703 is mounted on the main frame 1. Flat pulley III 704 is mounted on rotating shaft V 702. Flat pulley III 704 and flat pulley IV 705 are connected via belt II 706. Flat pulley IV 705 is mounted on drive shaft II 707. Gear II 708 is mounted on drive shaft II 707. Encoder 709 is mounted on rotating shaft V 702. When drive motor I 801 on drive unit 800 rotates, it drives drive gear IV 803 to rotate. Drive gear IV 803 meshes with gear II 708, driving drive shaft II 707 to rotate. Drive shaft 707 drives flat pulley IV 705 to rotate. Flat pulley III 704 is driven to rotate by flat pulley IV 705 via belt II 706. The winding reel 701 follows the rotation of flat pulley III 704 to wind up the wire. Encoder 709 calculates the length of the detonating cord winding.

[0029] The structure of the drive unit 800 is as follows: Figure 10As shown, drive motor I 801 is mounted on the main frame 1, synchronous pulley VII 804 is mounted on drive motor I 801, synchronous pulley VIII 805 is mounted on drive shaft III 806, synchronous pulley VII 804 and synchronous pulley VIII 805 are connected by synchronous belt IV 807, gear III 802 and gear IV 803 are mounted on drive shaft III 806, drive motor I 801 drives synchronous pulley VII 804 to rotate, synchronous pulley VII 804 drives synchronous belt IV 807 to rotate, synchronous pulley VIII 805 is driven to rotate by synchronous belt IV 807, synchronous pulley VIII 805 drives drive shaft III 806 to rotate, and gear III 802 and gear IV 803 follow drive shaft III 806.

[0030] The structure of the cable unit 900 is as follows: Figure 11 As shown, the cable guide 901 is mounted on the take-up frame 2, sprocket I 902 is mounted on the cable guide 901, drive motor II 903 is mounted on the take-up frame 2, sprocket II 904 is mounted on the drive motor II 903, sprocket I 902 and sprocket II 904 are connected by chain I 905, the cable cutter 906 is mounted on cylinder III 907, cylinder III 907 is mounted on the cable guide 901, drive motor II 903 drives sprocket II 904 to rotate, drive sprocket I 902 is driven by sprocket II 904 to rotate by chain I 905, the cable guide 901 is a ball screw mechanism driven by drive sprocket I 902 to convert the rotational motion into horizontal motion to reciprocate the cable guide, the cable cutter 906 is used to cut the explosive cord, when the detonating cord on the cable reel 1001 is fully wound, cylinder III 907 moves upward to push the cable cutter 906 to cut the explosive cord.

[0031] The structure of the take-up unit 1000 is as follows: Figure 12 As shown, the reel 1001 is inserted into the drive shaft 1002, the sprocket Ⅲ 1003 is mounted on the drive shaft Ⅰ 1002, and the sprocket Ⅲ 1003 and sprocket Ⅱ 904 are connected by the chain Ⅱ 1004. The driven rotating shaft 1005 is mounted on the cylinder Ⅳ 1006, and the cylinder Ⅳ 1006 is mounted on the take-up frame 2. The hand lever valve 1007 is mounted on the take-up frame 2. The hand lever valve 1007 controls the cylinder Ⅳ 1006 to move, inserting the reel 1001 into the drive shaft 1002. By opening the hand lever valve 1007, the cylinder Ⅳ 1006 extends, allowing the driven rotating shaft 1005 to be inserted into the drive shaft 1002. The drive sprocket Ⅱ 904 rotates, which in turn drives the sprocket Ⅲ 1003 to rotate via the chain Ⅱ 1004. The sprocket Ⅲ 1003 then drives the reel 1001 to rotate.

[0032] In Example 2, unlike Example 1, the explosion-proof unit is an electric gripper, and its structure is as follows: Figure 13As shown, the electric gripper includes a support 1101, a left gripper 1102, a right gripper 1103, and an electric telescopic rod 1104. The support 1101 is installed at the bottom of a first-layer winding reel 105. The right gripper 1103 is fixedly installed on the support 1101, and the left gripper 1102 is slidably installed on the support 1101. The telescopic end of the electric telescopic rod 1104 is fixedly connected to the left gripper 1102. The electric telescopic rod 1104 is connected to a PLC control module and has a faster response speed than a cylinder, less than 100ms, enabling rapid explosion-proof operation. The left gripper 1102 and the right gripper 1103 are located on both sides of the hose 114. When gripping, the electric telescopic rod 1104... The left chuck 1102 slides closer to the right chuck 1103 to clamp and push the tubing 114. The electric telescopic rod 1104, controlled by the PLC, can clamp and push the tubing 114 with a fast response. The left chuck 1102 and the right chuck 1103 are respectively equipped with clamping blocks 1105. There is a predetermined distance between the clamping blocks 1105 and the tubing 114, specifically 0.5-1d, where d is the diameter of the tubing 114. The cross-section of the clamping blocks 1105 is triangular, with one of the opposite sides of the two clamping blocks 1105 being a rounded corner. The force-bearing area is small when clamping the tubing 114, which can quickly separate the core inside the tubing 114 and avoid continuous explosions.

[0033] The specific implementation process is as follows: The cylinder is controlled by a PLC via a control valve. Parameter setting and manual / automatic switching are all done on the touch screen, making operation very convenient and quick. The safe range of winding temperature and the safe value of detonating cord diameter can be preset within the PLC control module. First, in the take-up unit 1000, the reel 1001 is manually inserted into the drive shaft 1002 and the lever valve 1007 is activated. Cylinder IV 1006 extends and inserts the driven rotating shaft 1005 into the reel 1001 for positioning. The reel 1001 is then rotated by the chain II 1004 and driven by the drive motor II 903 to wind the wire. Then, the explosive is added from the explosive hopper unit 100, the core wire is wound, and a polyester film is wrapped around it. The wire then enters the inner layer wrapping unit 300, driven by the servo motor I 307 to complete the inner layer winding. Simultaneously, the temperature change of the grinding head during winding is monitored by the temperature sensor I 312. Next, the wire enters the middle layer wrapping unit 400, driven by the servo motor II 407 to complete the middle layer winding. Again, the temperature change of the grinding head during winding is monitored by the temperature sensor II 412. Finally, the rope enters the detonating cord steering and diameter detection unit 500, where the steering wheel 503 completes the vertical movement of the detonating cord. The conversion between dynamic and horizontal motion is handled by the wire diameter detector 501, which is responsible for detecting the quality of the detonating cord during the production process. The detonating cord enters the outer layer winding unit 600, which is driven by the servo motor III 607 ​​to rotate and complete the outer layer winding. At the same time, the temperature sensor III 612 monitors the temperature change of the grinding head during winding. Then, the detonating cord enters the wire pulling unit 700, which is pulled by the rotation of the winding wheel 701. The movement of the wire pulling unit 700 and the detonating cord, as well as the movement of the wire diameter detector 500, are driven by the rotation of the drive motor I 801 of the drive unit 800, which drives the gears III 802 and IV 803 to mesh with their respective gears I 509 and II 708. The detonating cord enters the wire laying unit 900, which is driven by the drive motor II 903 through the chain I 905 to drive the wire laying device 901 to reciprocate and lay the wire to the winding wheel 1001. The wire laying device 901 is a lead screw structure that converts the rotational motion into linear motion. When the winding reel 1001 is fully wound, cylinder III 907 pushes the cable-breaking knife 906 upward to cut the detonating cord, completing the detonating cord production process. During production, if any temperature sensor detects that the winding temperature exceeds the safe range, an alarm will sound and the machine will stop immediately. If the wire diameter detector 501 detects that the detonating cord diameter exceeds the safe value, an alarm will sound and the machine will stop immediately, and the temperature sensor will be activated for secondary verification. If the temperature is abnormal, the explosion-proof unit will be activated simultaneously to clamp the rubber tube to prevent continuous explosions. This solution can effectively prevent the spread of explosion risk and the resulting chain accidents, monitor the temperature in real time during the winding process, prevent the induction of safety accidents, and has good safety protection performance.

[0034] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A multi-stage explosion-proof and precise temperature-controlled wrapping structure for a detonating cord making machine, characterized in that: The system includes a hopper unit, an explosion-proof unit, an inner wrapping unit, a middle wrapping unit, an outer wrapping unit, a detonating cord steering and diameter detection unit, and a PLC control module. The explosion-proof unit is installed below the hopper unit and is used to hold the rubber tube of the hopper unit. The inner, middle, and outer wrapping units are all equipped with temperature sensors to detect the temperature during winding. If the temperature exceeds the safe range, an alarm will sound and the system will stop. The detonating cord steering and diameter detection unit includes a diameter detector, which monitors the diameter of the detonating cord in real time. If the diameter exceeds the safe value, an alarm will sound and the system will stop immediately, and the temperature sensor will be activated for secondary verification. If the temperature is abnormal, the explosion-proof unit will be activated. The explosion-proof unit, temperature sensor, and diameter detector are all connected to the PLC control module. The PLC control module integrates a human-machine interface to realize parameter setting, fault alarm, and production process monitoring.

2. The multi-stage explosion-proof and precise temperature-controlled wrapping structure of the detonating cord making machine according to claim 1, characterized in that: The hopper unit includes a winding disc, a hopper II, and a hose. The hopper II is mounted on the winding disc, and the hose is located below the winding disc. The hose contains a core layer wrapping wire. The explosion-proof unit is mounted below the winding disc via a bracket II. The hopper unit also includes a weighing sensor, which is connected to a PLC control module to achieve automatic dosing.

3. The multi-stage explosion-proof and precise temperature-controlled wrapping structure of the detonating cord making machine according to claim 1, characterized in that: The explosion-proof unit includes cylinder I and cylinder II connected in series. Cylinder I is responsible for extending and retracting along the length of the explosion-proof unit, and cylinder II is responsible for clamping the detonating cord tubing along the width of the explosion-proof unit. Cylinder I and cylinder II are connected to a PLC control module.

4. The multi-stage explosion-proof and precise temperature-controlled wrapping structure of the detonating cord making machine according to claim 3, characterized in that: The explosion-proof unit's cylinder I and cylinder II are connected via a quick-connect air connector, with a response time not exceeding 0.3 seconds.

5. The multi-stage explosion-proof and precise temperature-controlled wrapping structure of the detonating cord making machine according to claim 1, characterized in that: The inner layer wrapping unit, middle layer wrapping unit, and outer layer wrapping unit are each driven by an independent servo motor to perform independent wrapping operations using a synchronous pulley set. Each of the inner layer wrapping unit, middle layer wrapping unit, and outer layer wrapping unit is equipped with a tension controller. The servo motor and tension controller are connected to a PLC control module to achieve independent automatic control.

6. The multi-stage explosion-proof and precise temperature-controlled wrapping structure of the detonating cord making machine according to claim 1, characterized in that: The PLC control module integrates a human-machine interface to enable parameter setting, fault alarms, and production process monitoring.

7. The multi-stage explosion-proof and precise temperature-controlled wrapping structure of the detonating cord making machine according to claim 1, characterized in that: The wire diameter tester uses a laser scanning measuring head, with a testing accuracy of no less than ±0.1mm.

8. The multi-stage explosion-proof and precise temperature-controlled wrapping structure of the detonating cord making machine according to claim 1, characterized in that: The explosion-proof unit is an electric gripper, which includes a support, a left gripper, a right gripper, and an electric telescopic rod. The support is installed at the bottom of a first-layer winding reel, the right gripper is fixedly installed on the support, and the left gripper is slidably installed on the support. The telescopic end of the electric telescopic rod is fixedly connected to the left gripper and is connected to a PLC control module. The left and right grippers are located on both sides of the hose, and each gripper has a clamping block. The clamping block is at a predetermined distance from the hose. The cross-section of the clamping block is triangular, with one of the opposite sides of the two clamping blocks being a rounded corner.

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