A detonating agent adding device and a manufacturing equipment of a detonating tube

Abstract

This invention discloses a charging device for detonating explosives and a manufacturing equipment for detonating tubes, relating to the field of civil explosives technology. It includes: a powder container for filling with powder, with a closable flow-limiting and discharge mechanism at the bottom for discharging the powder under its own weight; and a positioning mechanism positioned above a hopper. The powder container is detachably mounted on the positioning mechanism, and when mounted, its flow-limiting and discharge mechanism is close to and directly opposite the top inlet of the hopper, avoiding the shear turbulence formed by the powder flow and air at the edge of the hopper when the powder is poured downwards from the hopper, thus preventing powder dust from floating.

Description

Technical Field

[0001] This invention relates to the field of civil explosives technology, and in particular to a detonator for adding explosives and equipment for manufacturing detonating tubes. Background Technology

[0002] In the manufacturing process of detonating cords for civil explosives, when the plastic tube is pulled by an extruder, the detonating explosive falls into the plastic tube by its own weight. Then, the plastic tube containing the detonating explosive is cooled by a cold air water tank, and then a traction machine pulls and winds up the plastic tube.

[0003] Explosive detonators are typically powdered. Due to the low density of the powder within the detonating cord (approximately 0.6 g / cm³) and its fine particle size (approximately 25 micrometers), the powder is usually a mixture of RDX (high explosive) and aluminum powder. Adding the powder requires tilting the detonator cup to pour it into the funnel, which easily creates dust. This dust floats and settles on the ground and equipment, making it difficult to clean and posing a risk of explosion. Summary of the Invention

[0004] The purpose of this invention is to provide a charging device for detonating explosives and a manufacturing equipment for detonating tubes, so as to solve the problems existing in the prior art and avoid the situation in the prior art where the powder flow and air form shear turbulence at the edge of the cup mouth when the powder is poured out downwards, causing powder dust to float.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a device for adding explosive charge, comprising: A powder container is provided inside for filling with powder. The bottom of the powder container is provided with a closable flow-limiting discharge mechanism, which allows the powder to be discharged under its own gravity. A positioning mechanism is located above the medicine funnel. The powder container is detachably installed on the positioning mechanism. When the powder container is installed on the positioning mechanism, its flow-limiting and discharge mechanism is close to and directly opposite the top feed inlet of the medicine funnel.

[0006] Optionally, the flow-limiting outlet mechanism is provided with a sealing mechanism to close it. The sealing mechanism is movably installed on the powder container. The sealing mechanism is equipped with a pushing mechanism to open it. The pushing mechanism is located above the powder hopper.

[0007] Optionally, the flow-limiting discharge mechanism is a discharge port located at the bottom of the powder container, and the structure of the discharge port is smaller than the cross-section of the inner cavity of the powder container in the horizontal direction.

[0008] Optionally, the powder container is a cylindrical structure with a vertically extending axis, and the cross-section of its inner cavity gradually decreases from top to bottom along the horizontal direction.

[0009] Optionally, the sealing mechanism is a drive rod that is movably inserted into the powder container in a vertical direction. The top end of the drive rod extends out of the powder container and is detachably connected to the output end of the pushing mechanism. The bottom end of the drive rod is used to seal the discharge port.

[0010] Optionally, the flow cross-section of the discharge port gradually decreases along the discharge direction of the powder, and the bottom end of the drive rod is inserted into the discharge port and matches the structure of the discharge port.

[0011] Optional, also includes: The transfer mechanism has a fixed part and a movable part. One end of the fixed part is located above the medicine funnel, and the other end is used to extend to the replacement area. The movable part is movably mounted on the fixed part along the extension direction of the fixed part, and the positioning mechanism is mounted on the movable part.

[0012] Optionally, the transfer mechanism uses a rodless cylinder, with the fixed part and the moving part being the cylinder barrel and slider of the rodless cylinder, respectively, and the positioning mechanism being mounted on the slider.

[0013] Optionally, a vibrator may be provided on the fixed part of the transfer mechanism and / or on the positioning mechanism.

[0014] Also provided is a detonating cord manufacturing equipment, including a main body of the equipment, wherein the main body of the equipment is provided with a detonating cord extrusion mechanism, a detonating cord charging mechanism, a detonating cord cooling mechanism and a detonating explosive charging device; The detonating cord feeding mechanism is located at the end of the detonating cord extrusion mechanism, the detonating cord cooling mechanism is located at the end of the detonating cord feeding mechanism, the detonating cord feeding mechanism is provided with a hopper, a replacement area is provided on one side of the hopper, the replacement area is provided with a window for the powder container to enter and exit, and the window is provided with an openable sash. The explosive charging device has a transfer mechanism installed between the hopper and the replacement zone. One end of the fixed part of the transfer mechanism is located above the hopper, and the other end extends to the replacement zone. The movable part of the transfer mechanism is movably installed on the fixed part along the extension direction of the fixed part. The positioning mechanism is installed on the movable part, and the powder container is installed on the positioning mechanism.

[0015] The present invention achieves the following technical effects compared to the prior art: The explosive charging device disclosed in this invention utilizes a positioning mechanism positioned above the explosive hopper. This mechanism simultaneously holds the powder container above the hopper, ensuring that the flow-limiting discharge mechanism of the powder container is close to and directly opposite the top inlet of the hopper. This significantly shortens the distance between the flow-limiting discharge mechanism and the top inlet of the hopper. When the flow-limiting discharge mechanism is activated, the powder is discharged from it and falls into the top inlet of the hopper. The flow-limiting discharge mechanism restricts the discharge of the powder, allowing it to slowly exit the flow-limiting mechanism and fall into the top inlet of the hopper, effectively preventing powder dust from floating. This solves the problem in existing technologies where, when powder is poured downwards from the cup opening, the powder flow and air create shear turbulence at the cup edge, causing powder dust to float. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a device for manufacturing a detonating cord in one example of the present invention. Figure 2 This is a schematic diagram of the structure of a detonating explosive charging device in one example disclosed in this invention; Figure 3 This is a schematic diagram of the structure of an example of a traditional Chinese medicine powder container disclosed in this invention; Among them, 1-pushing mechanism, 2-spring buckle structure, 3-drive rod, 4-feeding cover, 5-powder container, 6-moving part, 7-fixed part, 8-discharge port, 9-drug hopper, 10-detonating tube feeding mechanism, 11-detonating tube extrusion mechanism, 12-detonating tube cooling mechanism. Detailed Implementation

[0018] 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.

[0019] The purpose of this invention is to provide a charging device for detonating explosives and a manufacturing equipment for detonating tubes, so as to solve the problems existing in the prior art and avoid the situation in the prior art where the powder flow and air form shear turbulence at the edge of the cup mouth when the powder is poured out downwards, causing powder dust to float.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 2 to 3 As shown, the present invention provides a charging device for detonating explosives, including a powder container 5 and a positioning mechanism. The powder container 5 is used to fill powder, and a closable flow-limiting discharge mechanism is provided at the bottom of the powder container 5 to allow the powder to be discharged under its own gravity. The positioning mechanism is located above the detonating hopper 9. The powder container 5 is detachably installed at the positioning mechanism, and when the powder container 5 is installed at the positioning mechanism, its flow-limiting discharge mechanism is close to and directly opposite the top feed port of the detonating hopper 9.

[0022] Understandably, firstly, since the powder container 5 is detachably installed at the positioning mechanism, after the powder inside the powder container 5 is emptied, it can be removed and replaced with another powder container 5 filled with powder. Furthermore, because the powder container 5 supplies material to the detonating hopper 9, even if the powder container 5 stops supplying it, the accumulated powder in the detonating hopper 9 will continue to be added to the detonating cord manufacturing equipment for a certain period of time, thus allowing for the replacement of the powder container 5. It is also understandable that the rate of powder discharge is controlled by the flow-limiting discharge mechanism, preventing both overfilling and overflow of powder in the detonating hopper 9, and ensuring timely powder supply to the detonating hopper 9.

[0023] The explosive charging device disclosed in this invention uses a positioning mechanism positioned above the explosive hopper 9 to simultaneously hold the powder container 5 above the hopper 9. This position ensures that the flow-limiting discharge mechanism of the powder container 5 is close to and directly opposite the top inlet of the explosive hopper 9, significantly reducing the distance between them. When the flow-limiting discharge mechanism is activated, the powder is discharged from it and falls into the top inlet of the explosive hopper 9. The flow-limiting discharge mechanism restricts the discharge of the powder, allowing it to slowly exit the flow-limiting mechanism and fall into the top inlet of the explosive hopper 9, effectively preventing powder dust from floating. This solves the problem in the prior art where, when powder is poured downwards from the cup opening, the powder flow and air create shear turbulence at the cup opening edge, causing powder dust to float.

[0024] The structure of the powder container 5 is not limited. It can adopt a cup-shaped structure that is easy to clamp, and detachable connectors, such as snap-fit ​​structures, can be provided on the outer wall of the powder container 5.

[0025] Correspondingly, the positioning mechanism can adopt a clamping structure that is adapted to the shape of the powder container 5. For example, in a specific example, the powder container 5 is cup-shaped, so the positioning mechanism adopts a snap ring structure and is tightly fitted onto the outer peripheral wall of the powder container 5. The positioning mechanism can also be connected to the powder container 5 through a detachable connector, such as a snap-fit ​​structure, so the powder container 5 is snapped onto the positioning mechanism through the snap-fit ​​structure.

[0026] To facilitate the addition of medicine to the powder container 5, a feeding port is provided on the top of the powder container 5, and a feeding cap 4 can be detachably installed at the feeding port.

[0027] To complete the closure or opening of the flow-limiting outlet mechanism, based on the above implementation method, a sealing mechanism is provided at the flow-limiting outlet mechanism to close it. The sealing mechanism is movably installed on the powder container 5. The sealing mechanism is equipped with a pushing mechanism 1 to open it. The pushing mechanism 1 is located above the funnel 9. That is to say, before the powder container 5 is used, the sealing mechanism closes the flow-limiting outlet mechanism to prevent the powder from falling out of the powder container 5. When the powder container 5 is used, the pushing mechanism 1 pushes the sealing mechanism to disengage it from the flow-limiting outlet mechanism, so that the powder can be discharged from the flow-limiting outlet mechanism.

[0028] Understandably, the type of the actuating mechanism 1 matches the type of the blocking mechanism. In some cases, the blocking mechanism is a baffle rotatably mounted on the powder container 5. Before use, the baffle tightly seals the flow-limiting outlet mechanism. The actuating mechanism 1 can be a linear actuator and / or a robotic arm, etc. When the powder container 5 is in use, the baffle moves under the action of the output end of the actuating mechanism 1, thereby opening part or all of the structure of the flow-limiting outlet mechanism, and no longer blocking the flow-limiting outlet mechanism.

[0029] Regarding the coordination method between the baffle and the output end of the pushing mechanism 1, if the pushing mechanism 1 uses a cylinder, the end of its piston rod can be used to directly push the baffle forward, separating it from the flow limiting and output mechanism; or if the pushing mechanism 1 uses a robot arm in conjunction with the cylinder, the robot arm is installed at the end of the piston rod of the cylinder, and the baffle is provided with a clamping part. When each powder container 5 is replaced and installed on the positioning mechanism, each clamping part is in the same position and within the range that can be clamped by the robot arm. The piston rod moves at the set distance, and then the robot arm clamps and completes the clamping and fixing of the baffle. Then, the movement of the piston rod is used to complete the synchronous movement of the baffle.

[0030] In other cases, the blocking mechanism can also use a swing valve, which is installed in the flow limiting and discharge mechanism. The pushing mechanism 1 can use a linear actuator combined with a rotary actuator to cooperate in opening the swing valve. If the pushing mechanism 1 uses a cylinder in conjunction with a drive motor, the piston rod of the cylinder pushes the drive motor to the handwheel or handle of the swing valve, and the output end of the drive motor is engaged with the handwheel or handle. The rotation of the output end of the drive motor is used to partially or fully open the swing valve.

[0031] In both of the above situations, the top of the powder container 5 may be provided with an air inlet or connected to an air inlet valve, so as to balance the airflow generated by the powder flow in the powder container 5 and avoid turbulence in the powder container 5, which would cause the powder to be discharged unevenly.

[0032] In some cases, the flow-limiting discharge mechanism is a discharge port 8 located at the bottom of the powder container 5. The structure of the discharge port 8 is smaller than the cross-section of the inner cavity of the powder container 5 along the horizontal direction, so as to fully reduce the structure of the discharge port 8 and thus reduce the discharge rate of the powder. For example, the structural area of ​​the discharge port 8 is at most one-fifth of the cross-section of the inner cavity of the powder container 5 along the horizontal direction. In this way, when the powder is discharged from the discharge port 8 under its own gravity, it can be fully restricted by the reduced structure of the discharge port 8, thereby reducing the discharge rate of the powder.

[0033] In this case, the sealing mechanism is a drive rod 3 that is vertically movable and inserted into the powder container 5. The top end of the drive rod 3 extends out of the powder container 5 and is detachably connected to the output end of the push mechanism 1. The top part of the drive rod 3 slides with the top structure of the powder container 5 to guide the movement of the drive rod 3. The bottom end of the drive rod 3 is used to seal the discharge port 8. Before use, the bottom end of the drive rod 3 is sealed at the discharge port 8 by its own weight. When the powder container 5 is in use, the push mechanism 1 drives the drive rod 3 to move synchronously, so that the bottom end of the drive rod 3 is no longer sealed at the discharge port 8.

[0034] Regarding the cooperation method between the top of the drive rod 3 and the pushing mechanism 1, if the pushing mechanism 1 adopts a robot arm cooperating with a cylinder, the robot arm is installed at the end of the piston rod of the cylinder, and the top of the drive rod 3 is provided with a clamping part that is gripped by the robot arm, when each powder container 5 is replaced and installed on the positioning mechanism, each clamping part is in the same position and within the range that can be clamped by the robot arm. For example, the drive rod 3 and the discharge port 8 are both located at the axial position of the powder container 5, and the piston rod moves at the set distance, so the robot arm clamps and completes the clamping and fixing of the top of the drive rod 3. Then, the synchronous movement of the drive rod 3 is completed by the movement of the piston rod.

[0035] For example, the pushing mechanism 1 can be a cylinder, etc. A spring-loaded latching structure 2 is provided between the end of the piston rod of the cylinder and the end of the drive rod 3. For example, a connecting block with a beveled or conical guide head is fixed to the end of the piston rod, and a locking sleeve is installed at the top of the drive rod 3. Inside the locking sleeve, there is a locking pin held by a spring and a matching annular locking groove or conical recess. When working, the piston rod extends, and its conical guide head is inserted into the locking sleeve of the drive rod 3. The conical surface squeezes the locking pin, overcoming the spring force and causing it to contract radially. When the guide head is fully inserted and the locking pin reaches its annular locking groove position, the locking pin is springed into the groove under the action of the spring, realizing rigid locking. After the operation is completed, the piston rod retracts, causing the drive rod 3 to retract as well. When it reaches the preset disengagement position, for example, if the drive rod 3 has a stop and engages with the top of the powder container 5, the drive rod 3 cannot retract further, and the piston rod continues to retract. At this time, a relative tension is generated between the piston rod and the drive rod 3. This tension causes the inclined surface of the annular locking groove to exert a radial compressive force on the locking pin. When this force overcomes the elastic force of the locking pin spring, the locking pin is squeezed out of the locking groove, the lock is released, and the piston rod continues to retract independently. The drive rod 3 then returns to its original position under its own gravity. It should be noted that the stop on the drive rod 3 limits the movement of the drive rod 3 to a sufficiently small distance, limiting it to the point where the bottom end of the drive rod 3 fully opens the discharge port 8. This prevents the drive rod 3 from moving excessively, as it may easily impact the discharge port 8 of the powder container 5 when it falls, potentially causing a problem with the container's seal over time.

[0036] The flow cross section of the discharge port 8 gradually decreases along the direction of powder discharge. The bottom end of the drive rod 3 is inserted into the discharge port 8 and matches the structure of the discharge port 8. This allows the bottom end of the drive rod 3 to form a conical fit with the discharge port 8, thereby improving the sealing between the two. At the same time, during the upward movement of the drive rod 3, this conical fit can also be used to adjust the discharge rate of the discharge port 8.

[0037] To ensure smooth discharge of the powder and thus form a stable flow field and reduce powder floating, based on the above implementation method, the powder container 5 is a cylindrical structure with a vertically extending axis, and the cross-section of its inner cavity gradually decreases from top to bottom along the horizontal direction.

[0038] Furthermore, the device of the present invention also includes a transfer mechanism, which has a fixed part 7 and a movable part 6. One end of the fixed part 7 is located above the medicine hopper 9, and the other end is used to extend to the replacement area. The movable part 6 is movably mounted on the fixed part 7 along the extension direction of the fixed part 7. The positioning mechanism is mounted on the movable part 6, thereby enabling the powder container 5 to be transported by the transfer mechanism. This allows the operator to replace the powder container 5 at the medicine hopper 9, instead of replacing it at the replacement area, by mounting the powder container 5 on the positioning mechanism and transferring it to the position above the medicine hopper 9 through the movement of the movable part 6, thus significantly reducing the floating caused by powder leakage.

[0039] The transfer mechanism can be a rodless cylinder, with the fixed part 7 and the moving part 6 serving as the cylinder barrel and slider of the rodless cylinder, respectively. The positioning mechanism is mounted on the slider. Magnetic coupling rodless cylinders should be avoided. Of course, the type of transfer mechanism is not limited; a lead screw and slider structure can also be used. When using a lead screw and slider structure, the fixed part 7 is the lead screw, the moving part 6 is the slider, and the positioning mechanism is mounted on the slider.

[0040] In order to ensure that the powder in the powder container 5 is completely discharged, a vibrator is provided on the fixing part 7 and / or the positioning mechanism of the transfer mechanism. The vibrator generates micro-vibration and transmits it to the powder container 5, so that the powder no longer adheres and can be continuously and stably discharged through the flow-limiting discharge structure.

[0041] The vibrator can be a miniature vibration motor, etc. More preferably, the vibrator is set on the fixed part 7 of the transfer mechanism, which is convenient for installation and wiring, avoiding the need to set it on the positioning mechanism, which would require a long cable to meet the reciprocating motion of the positioning mechanism with the moving part 6.

[0042] like Figure 1 As shown, a detonating cord manufacturing apparatus is also provided, including a main body of the apparatus. The main body contains a detonating cord extrusion mechanism 11, a detonating cord charging mechanism 10, a detonating cord cooling mechanism 12, and a detonating charge addition device. The detonating cord charging mechanism 10 is located at the end of the detonating cord extrusion mechanism 11, and the detonating cord cooling mechanism 12 is located at the end of the detonating cord charging mechanism 10. A hopper 9 is provided on the detonating cord charging mechanism 10, and a replacement area is provided on one side of the hopper 9. The replacement area has a window for the powder container 5 to enter and exit, and the window has an openable sash. The transfer mechanism of the detonating charge addition device is installed between the hopper 9 and the replacement area. One end of the fixed part 7 of the transfer mechanism is located above the hopper 9, and the other end extends to the replacement area. The moving part 6 of the transfer mechanism is movably installed on the fixed part 7 along the extending direction of the fixed part 7. A positioning mechanism is installed on the moving part 6, and the powder container 5 is installed on the positioning mechanism.

[0043] It should also be noted that a transparent window is provided at the position of the main body of the equipment corresponding to the medicine hopper 9. The window is enclosed by glass or acrylic sheet, so that the medicine hopper 9 and the powder container 5 that has been moved to this position can be observed.

[0044] In practical use, the operating system controls the movement 6 of the transfer mechanism to the replacement zone. The operator installs the powder container 5 on the positioning mechanism connected to the movement 6 of the transfer mechanism, and then the transfer mechanism moves the powder container 5 above the hopper 9. The pushing mechanism 1 then opens the sealing mechanism on the flow-limiting discharge mechanism, allowing powder to be fed into the hopper 9 through the flow-limiting discharge mechanism. The hopper 9 then feeds the detonating tube extrusion mechanism 11, and the detonating tube cooling mechanism 12 cools the formed detonating tube. The tube is then wound up by a traction machine. After the powder in the powder container 5 is emptied, the pushing mechanism 1 is activated to disengage from the sealing mechanism, and the empty powder container 5 is transferred to the replacement zone via the transfer mechanism. The operator opens the window, installs the powder container 5 on the positioning mechanism in the replacement zone, closes the window, and then restarts the transfer mechanism to move the replaced powder container 5 above the hopper 9.

[0045] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0046] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A device for adding explosive charge, characterized in that, include: A powder container is provided inside for filling with powder. The bottom of the powder container is provided with a closable flow-limiting discharge mechanism, which allows the powder to be discharged under its own gravity. A positioning mechanism is located above the medicine funnel. The powder container is detachably installed on the positioning mechanism. When the powder container is installed on the positioning mechanism, its flow-limiting and discharge mechanism is close to and directly opposite the top feed inlet of the medicine funnel.

2. The detonating device according to claim 1, characterized in that, The flow-limiting outlet mechanism is equipped with a sealing mechanism to close it. The sealing mechanism is movably installed on the powder container. The sealing mechanism is equipped with a pushing mechanism to open it. The pushing mechanism is located above the powder hopper.

3. The detonating device according to claim 2, characterized in that, The flow-limiting discharge mechanism is a discharge port located at the bottom of the powder container, and the structure of the discharge port is smaller than the cross-section of the inner cavity of the powder container in the horizontal direction.

4. The explosive charging device according to claim 3, characterized in that, The powder container is a cylindrical structure with a vertically extending axis, and the cross-section of its inner cavity gradually decreases from top to bottom along the horizontal direction.

5. The detonator for adding explosives according to claim 3, characterized in that, The sealing mechanism is a drive rod that is vertically movable and inserted into the powder container. The top end of the drive rod extends out of the powder container and is detachably connected to the output end of the pushing mechanism. The bottom end of the drive rod is used to seal the discharge port.

6. The detonating device according to claim 5, characterized in that, The flow cross-section of the discharge port gradually decreases along the direction of powder discharge, and the bottom end of the drive rod is inserted into the discharge port and matches the structure of the discharge port.

7. The detonating device according to claim 1, characterized in that, Also includes: The transfer mechanism has a fixed part and a movable part. One end of the fixed part is located above the medicine funnel, and the other end is used to extend to the replacement area. The movable part is movably mounted on the fixed part along the extension direction of the fixed part, and the positioning mechanism is mounted on the movable part.

8. The detonating device according to claim 7, characterized in that, The transfer mechanism uses a rodless cylinder, the fixed part and the moving part are the cylinder barrel and the slider of the rodless cylinder, respectively, and the positioning mechanism is installed on the slider.

9. The detonating device according to claim 7, characterized in that, A vibrator is provided on the fixed part of the transfer mechanism and / or on the positioning mechanism.

10. A device for manufacturing detonating cords, characterized in that, The equipment includes a main body, which contains a detonating tube extrusion mechanism, a detonating tube charging mechanism, a detonating tube cooling mechanism, and a charging device for the detonating explosive as described in any one of claims 7 to 9. The detonating cord feeding mechanism is located at the end of the detonating cord extrusion mechanism, the detonating cord cooling mechanism is located at the end of the detonating cord feeding mechanism, the detonating cord feeding mechanism is provided with a hopper, a replacement area is provided on one side of the hopper, the replacement area is provided with a window for the powder container to enter and exit, and the window is provided with an openable sash. The explosive charging device has a transfer mechanism installed between the hopper and the replacement zone. One end of the fixed part of the transfer mechanism is located above the hopper, and the other end extends to the replacement zone. The movable part of the transfer mechanism is movably installed on the fixed part along the extension direction of the fixed part. The positioning mechanism is installed on the movable part, and the powder container is installed on the positioning mechanism.

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