Detonating cord winding device

Abstract

The utility model discloses a detonating cord manufacturing cord package winding device, and relates to detonating cord technical field, including the winding line disc, the top of winding line disc is fixed with a plurality of steel drill in round array, the outer surface rotationally connected with rotating seat of steel drill, the surface of rotating seat is equipped with the wire drum, the top insertion of steel drill has the fixed disc, the bottom of fixed disc is provided with the friction disc of wire drum resistance, the utility model discloses in the process of winding, the friction between friction disc and wire drum ensures wire drum steady rotation, avoids the problem of uneven winding caused by wire drum skidding or rotation not smooth, thereby guarantee the compactness and stability of detonating cord winding, effectively promoted the detonation performance of detonating cord.

Description

Technical Field

[0001] This utility model relates to the field of detonating cord technology, and in particular to a device for controlling and wrapping detonating cord. Background Technology

[0002] Detonating cord is a type of pyrotechnic conduit used in engineering blasting and explosive devices to transmit or initiate detonation. A key characteristic of detonating cord is that, after initiation, the detonation wave propagates along the cord at a speed exceeding 6000 m / s. During detonation transmission, it can also trigger the detonation of connected or adjacent detonating cords until the detonation is complete. Stable detonation transmission performance requires the detonating cord to be tightly wound during its manufacturing process.

[0003] During the detonating cord making process, multiple wires are wrapped around the cord stem by rotating a winding reel containing multiple winding spools. During the outer wrapping process, abnormal high-speed rotation of the winding reel due to mechanical or control imbalances can cause the steel rod to bend, the cord making machine to jam, affecting normal production, increasing production costs, and posing certain safety risks. In addition, traditional steel rod structures use mechanical clips to fix the carrier, but replacing the flat wire requires repeatedly disassembling the clips with a wrench, increasing the time required for each replacement and affecting the continuity of the production line. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide a detonating cord binding and wrapping device, thereby ensuring the tightness and stability of the detonating cord wrapping and effectively improving the detonation transmission performance of the detonating cord.

[0005] According to the present invention, the detonating cord binding and wrapping device includes a wrapping reel, the top of which is fixed with several steel rods in a circular array, the outer surface of which is rotatably connected to a rotating seat, the surface of which is fitted with a wire spool, the top of which is inserted into a fixed plate, the bottom of which is provided with a friction plate that abuts against the wire spool, and the fixed plate and the friction plate are provided with a through hole for cooperating with the steel rods.

[0006] The top of the fixed plate has a through-hole for mounting groove, and a movable block is slidably connected inside the mounting groove. A first spring is provided between the inside of the mounting groove and the movable block. A locking block is fixed at the end of the movable block away from the first spring. The top of the steel rod has a locking groove that cooperates with the locking block.

[0007] Preferably, the left and right inner walls of the mounting groove are fixed with first guide rods, the left and right ends of the movable block are provided with first guide grooves that cooperate with the first guide rods, and the top of the movable block is fixed with a pull plate.

[0008] Preferably, a second guide rod is fixed at both the left and right ends above the steel rod, and a second guide groove that mates with the second guide rod is provided through the top of both the fixed plate and the friction plate.

[0009] Preferably, threaded holes are provided at both ends of the friction disc, and a lead screw is inserted into the threaded hole and threadedly connected thereto. A nut is fitted onto the outer surface of the lead screw and threadedly connected thereto.

[0010] Preferably, a second spring is sleeved on the outer surface of the lead screw, located between the fixed disc and the friction disc.

[0011] Preferably, the fixed plate has guide holes at both its left and right ends that cooperate with the lead screw.

[0012] The beneficial effects of this utility model are:

[0013] 1. During the wrapping process, the friction between the friction disc and the spool ensures stable rotation of the spool, avoiding uneven wrapping caused by spool slippage or poor rotation. This ensures the tightness and stability of the detonating cord wrapping and effectively improves the detonation transmission performance of the detonating cord.

[0014] 2. The fixed plate and steel rod are fixed by the cooperation of the clamp and the slot, so that when changing the spool, there is no need to repeatedly disassemble the mechanical clamp with a wrench. The operation is simple and quick, which greatly saves the replacement time, improves the continuity of the production line and production efficiency, and reduces labor costs and losses caused by equipment downtime. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the detonating cord restraint and wrapping device proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the spool structure of the detonating cord binding and wrapping device proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the explosive structure of the detonating cord binding device proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the fixed disc structure of the detonating cord restraint and wrapping device proposed in this utility model.

[0019] Figure 5 This is a schematic diagram of the friction disc structure of the detonating cord restraint and wrapping device proposed in this utility model.

[0020] Figure 6 This is a schematic diagram of the internal structure of the fixed disc of the detonating cord restraint and wrapping device proposed in this utility model.

[0021] In the diagram: 1. Winding reel; 2. Steel rod; 3. Rotating seat; 4. Wire drum; 5. Fixed disc; 6. Friction disc; 7. Insertion hole; 8. Mounting groove; 9. Moving block; 10. First spring; 12. Locking block; 13. Locking groove; 14. First guide rod; 15. First guide groove; 16. Pull plate; 17. Second guide groove; 18. Second guide rod; 19. Threaded hole; 20. Lead screw; 21. Second spring; 22. Nut; 23. Guide hole. Detailed Implementation

[0022] Reference Figure 1-6 The detonating cord binding and wrapping device includes a wrapping reel 1. Several steel rods 2 are fixed in a circular array on the top of the wrapping reel 1. This layout allows the steel rods 2 to be evenly distributed around the cord stem. A rotating seat 3 is rotatably connected to the outer surface of the steel rods 2. A wire spool 4 is fitted onto the surface of the rotating seat 3, and the wire to be wrapped is wound inside the wire spool 4. When the wrapping reel 1 rotates, the steel rods 2 rotate accordingly, causing the rotating seat 3 and the wire spool 4 to rotate synchronously, allowing the wire on the wire spool 4 to be evenly wrapped around the detonating cord stem. A fixing disc 5 is inserted into the top of the steel rods 2. A friction disc 6, made of a wear-resistant material such as rubber or polyurethane, is provided at the bottom of the fixing disc 5 to abut against the wire spool 4. The friction disc 6 is abutted by a friction disc 6. An insertion hole 7, which mates with the steel rods 2, is provided through the center of the fixing disc 5 and the friction disc 6. When the fixing disc 5 is inserted into the top of the steel rods 2, the friction disc 6 is in close contact with the wire spool 4, and the friction force drives the wire spool 4 to rotate, ensuring that the wire spool 4 can stably release the wire and preventing slippage or poor rotation of the wire spool 4.

[0023] A mounting groove 8 is formed through the top of the fixed plate 5. A movable block 9 is slidably connected inside the mounting groove 8. A first spring 10 is provided between the inside of the mounting groove 8 and the movable block 9. A locking block 12 is fixed to the end of the movable block 9 away from the first spring 10. A locking groove 13 that mates with the locking block 12 is formed on the top of the steel rod 2. When it is necessary to fix the fixed plate 5, the fixed plate 5 is inserted into the top of the steel rod 2. The movable block 9 moves into the mounting groove 8 under the elastic force of the first spring 10, driving the locking block 12 to move towards the locking groove 13 until the locking block 12 is fully engaged in the locking groove 13, thus achieving a fixed connection between the fixed plate 5 and the steel rod 2. When it is necessary to remove the fixed plate 5, by pulling the pull plate 16, the pull plate 16 moves the movable block 9 against the elastic force of the first spring 10 to move out of the mounting groove 8, causing the locking block 12 to disengage from the locking groove 13, and the fixed plate 5 can be easily removed from the top of the steel rod 2. Compared to traditional mechanical clip fixing, this fixing method eliminates the need for repeated disassembly with a wrench, greatly saving time when replacing the spool 4 or the steel rod 2, and improving the continuity of the production line.

[0024] The left and right inner walls of the mounting groove 8 are fixed with first guide rods 14, and the left and right ends of the movable block 9 are provided with first guide grooves 15 that cooperate with the first guide rods 14. The top of the movable block 9 is fixed with a pull plate 16. The cooperation between the first guide rods 14 and the first guide grooves 15 can effectively limit the movement direction of the movable block 9 in the mounting groove 8, ensuring that the movable block 9 can slide smoothly and avoid it from deviating or getting stuck during movement.

[0025] A second guide rod 18 is fixed at both the left and right ends of the steel rod 2. A second guide groove 17, which mates with the second guide rod 18, is provided through the top of both the fixed plate 5 and the friction plate 6. The cooperation between the second guide rod 18 and the second guide groove 17 further improves the stability of the fixed plate 5 during installation and removal from the top of the steel rod 2, preventing the fixed plate 5 from shaking or rotating during axial movement, ensuring the coaxiality of the fixed plate 5 and the steel rod 2, thereby ensuring uniform and stable friction between the friction plate 6 and the bobbin 4, which is beneficial for the uniform winding of the wire.

[0026] Both ends of the friction disc 6 have threaded holes 19, into which a lead screw 20 is threadedly inserted. A nut 22, also threadedly connected to the lead screw 20, is fitted onto the outer surface of the lead screw 20. A second spring 21, located between the fixed disc 5 and the friction disc 6, is also fitted onto the outer surface of the lead screw 20. By rotating the nut 22, the friction disc 6 and lead screw 20 can be quickly removed. The lead screw 20 can then be rotated to remove the friction disc 6 from the top, allowing for replacement. The second spring 21 provides an automatic rebound force for the friction disc 6. When the lead screw 20 is subjected to a certain axial pressure, the second spring 21 is compressed. When the pressure is released, the second spring 21 automatically returns to its original shape, driving the friction disc 6 back to its initial position. This ensures that there is always a certain basic friction between the friction disc 6 and the bobbin 4, further improving the stability and reliability of the device.

[0027] The fixed plate 5 has guide holes 23 at both its left and right ends, which mate with the lead screw 20. The guide holes 23 guide the lead screw 20, ensuring that the lead screw 20 maintains linear motion during axial movement.

[0028] When using this device, the operator first selects a suitable size and material of spool 4 according to the specifications and wrapping requirements of the detonating cord, and installs the spool 4 onto the rotating base 3. Then, the cord stem is passed through the center of the wrapping reel 1, and the position of the cord stem is adjusted so that it is on the center line of the wrapping path of each spool 4. Next, the fixing plate 5 is inserted into the top of the steel rod 2, and a fixed connection is achieved through the cooperation of the locking block 12 and the locking groove 13, and the friction plate 6 squeezes the spool 4 to generate friction. The rotating motor of the wrapping reel 1 is started, and the wrapping reel 1 drives the steel rod 2, the rotating base 3, and the spool 4 to rotate synchronously. The cord on the spool 4 is evenly wound onto the cord stem of the detonating cord, completing the cord-making process.

Claims

1. A detonating cord restraint and wrapping device, characterized in that: The device includes a winding reel (1), on the top of which several steel rods (2) are fixed in a circular array. A rotating seat (3) is rotatably connected to the outer surface of the steel rods (2). A bobbin (4) is fitted on the surface of the rotating seat (3). A fixed plate (5) is inserted into the top of the steel rods (2). A friction plate (6) is provided at the bottom of the fixed plate (5) to abut against the bobbin (4). An insertion hole (7) for cooperating with the steel rods (2) is opened through the center of the fixed plate (5) and the friction plate (6). The top of the fixed plate (5) is provided with a through-hole mounting groove (8), and a moving block (9) is slidably connected inside the mounting groove (8). A first spring (10) is provided between the inside of the mounting groove (8) and the moving block (9). A locking block (12) is fixed at the end of the moving block (9) away from the first spring (10). A locking groove (13) that cooperates with the locking block (12) is provided on the top of the steel rod (2).

2. The detonating cord restraint and wrapping device according to claim 1, characterized in that: The left and right inner walls of the mounting groove (8) are fixed with first guide rods (14), and the left and right ends of the moving block (9) are provided with first guide grooves (15) that cooperate with the first guide rods (14). The top of the moving block (9) is fixed with a pull plate (16).

3. The detonating cord restraint and wrapping device according to claim 1, characterized in that: The steel rod (2) is fixed with a second guide rod (18) at both the upper left and right ends. The top of the fixed plate (5) and the friction plate (6) are both provided with a second guide groove (17) that cooperates with the second guide rod (18).

4. The detonating cord restraint and wrapping device according to claim 1, characterized in that: The friction disc (6) has threaded holes (19) at both ends. A screw (20) is inserted into the threaded hole (19) and is threadedly connected to it. A nut (22) is fitted on the outer surface of the screw (20) and is threadedly connected to it.

5. The detonating cord restraint and wrapping device according to claim 4, characterized in that: The outer surface of the lead screw (20) is fitted with a second spring (21) located between the fixed disk (5) and the friction disk (6).

6. The detonating cord restraint and wrapping device according to claim 1, characterized in that: The fixed plate (5) has guide holes (23) at both its left and right ends that cooperate with the lead screw (20).

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