A slot-changing electric explosion spraying device

Abstract

The present application relates to electric explosion spraying technology field, disclose a kind of slot replacement type electric explosion spraying device, including mounting plate and pressing mechanism, the one end of the mounting plate is equipped with first drive gear, the first drive gear is engaged with drive rack, the one end of the drive rack is equipped with pneumatic cylinder, the pneumatic cylinder is used to drive drive rack to move back and forth.The multiple insulation explosion slots are set on synchronous belt, in the process of step-by-step slot replacement, insulation explosion slot is first withdrawn from the initiation position and opened, then slot replacement and slot entry are carried out, the carrier tape is avoided from being extruded by channel and affected by high temperature inside explosion slot in the process of slot replacement, the problem of carrier tape breakage is avoided, the stability of continuous electric explosion work is improved, meanwhile, the insulation explosion slot is set on the synchronous belt, each insulation explosion slot can be independently installed and detached, only one explosion slot needs to be replaced after any insulation explosion slot is damaged, without the need for overall replacement, which greatly reduces the use cost and maintenance difficulty.

Description

Technical Field

[0001] This invention relates to the field of electro-explosive spraying technology, specifically to a slot-changing electro-explosive spraying device. Background Technology

[0002] Electro-explosion is a novel material processing technology that has attracted widespread attention. The principle is to use high voltage to pulse the sprayed material. Under the ohmic heating effect of instantaneous high current, the sprayed material rapidly deposits energy and melts and vaporizes. Then, due to expansion and instability, it explodes to form high-temperature and high-speed molten particles. The molten particles are sprayed onto the surface of the substrate and deposited to form a coating.

[0003] Chinese patent CN118932273A discloses a disc-driven electro-explosive spraying deposition device with a carrier wire. This device employs a detonating disc with slotted internal grooves to create multiple insulating detonating cavities. A pressure block compresses the insulating detonating grooves, sealing the rear half of each groove. The carrier wire moves synchronously with the detonating disc for continuous electro-explosive spraying. However, this device suffers from several problems. Since the detonating disc and insulating detonating cavities are an integral structure, prolonged continuous detonation can lead to residual spraying material adsorbing into the insulating detonating cavities after prolonged high-temperature electro-explosive impact. Furthermore, both the insulating detonating cavities and the detonating disc themselves are prone to deformation, affecting the spray trajectory and uniformity of the sprayed particles. Additionally, any damaged detonating cavity cannot be replaced individually; the entire detonating disc must be replaced, resulting in high maintenance costs.

[0004] Chinese patent CN222902650U discloses a split-type electro-explosive powder-making and spraying device. To achieve a continuous electro-explosion process, a turntable drives a pressure block evenly distributed on a belt to perform circular motion. The turntable has an explosion chamber with a groove in the middle of its outer surface. Several conductive rods are evenly arranged in the explosion chamber. Under the action of the elastic fixture, the pressure block and the conductive rods hold the carrier wire to drive the carrier wire to move. The problem is that when the pressure block enters the guide support assembly during the turntable's circular motion, the pressure block is prone to jamming, causing the belt to stop rotating while the turntable continues to rotate. The pressure block and the conductive rods cannot make contact, resulting in the pressure block and the conductive rods being unable to effectively clamp the carrier wire under the action of the elastic fixture, which means that the carrier wire cannot pull the wire carrier disc for continuous wire feeding.

[0005] In summary, existing electro-explosive spraying devices have at least the following shortcomings: First, the insulated explosion chamber of the disc-type electro-explosive device is designed with a slotted explosion disc, which is prone to adhesion, heating, and deformation after multiple explosions, resulting in a smaller internal volume of the explosion chamber, thus affecting the trajectory of the sprayed particles and reducing the uniformity of the spraying; Second, the explosion slot cannot be replaced separately, and the overall structure is complex and the maintenance cost is high; Third, the split-type electro-explosive device is prone to jamming during the contact between the guide component and the belt, which prevents the clamping block and the conductive rod from reliably clamping the carrier belt, thus preventing the carrier belt from moving continuously. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a slot-changing electro-explosive spraying device.

[0007] A slot-changing type electro-explosive spraying device includes a mounting plate and a clamping mechanism. A first transmission gear is mounted on one end of the mounting plate. The first transmission gear meshes with a transmission rack. A cylinder is provided on one end of the transmission rack. The cylinder is used to drive the transmission rack to move back and forth. The lower end of the transmission rack is provided with a drive rod, and the mounting plate is provided with a first stop and a second stop. The drive rod is located between the first stop and the second stop. When the transmission rack moves back and forth, it can make the drive rod contact the first stop or the second stop, so as to drive the mounting plate to move back and forth to complete the process of entering or exiting the groove. The mounting plate is equipped with a drive synchronous pulley and a driven synchronous pulley. The drive synchronous pulley is coaxially arranged with the first drive gear. The drive synchronous pulley and the driven synchronous pulley are connected by a synchronous belt. When the drive rack moves forward, it drives the synchronous belt to rotate through the first drive gear, so that different insulating explosion slots enter the detonation position. The synchronous belt is provided with multiple insulating explosion grooves at intervals along the direction of movement. The insulating explosion grooves are equipped with load high voltage electrodes, load grounding electrodes and channels for the carrier belt to pass through. The two ends of the channel are respectively provided with a first guide wheel and a second guide wheel. The carrier belt enters the channel through the first guide wheel and is sent out through the second guide wheel. The clamping mechanism is used to apply downward pressure to the open insulating explosion groove so that it closes.

[0008] Preferably, the insulating explosion groove is divided into an upper explosion groove and a lower explosion groove. The upper explosion groove is provided with a load high-voltage electrode and an insulating explosion cavity, and the lower explosion groove is provided with a load grounding electrode and a guide assembly. The upper explosion groove and the lower explosion groove are aligned and closed to form the channel.

[0009] Preferably, the guide assembly is located within the openings of the upper and lower explosion grooves. The guide assembly includes a guide rod and a guide spring. After the clamping mechanism is released, the guide spring resets from its compressed state and lifts the upper explosion groove, so that the insulating explosion groove maintains its opening and limiting effect.

[0010] Preferably, the channel is formed by the upper explosion groove and the lower explosion groove under the downward pressure applied by the clamping mechanism to form a sealed channel. The width of the sealed channel perpendicular to the direction of movement of the carrier ribbon is adapted to the size of the carrier ribbon in that direction, so as to seal the carrier ribbon in the channel.

[0011] Preferably, the carrier ribbon has a positioning groove inside, and a metal wire is provided in the positioning groove. The depth of the positioning groove is less than the diameter of the metal wire. The metal wire and the carrier ribbon are fixed in the positioning groove at predetermined intervals along the length direction by dispensing glue at the glue dispensing points. The metal wire between adjacent glue dispensing points is exposed on the outside of the carrier ribbon for electro-explosive spraying by air gap discharge in the discharge area.

[0012] Preferably, the first transmission gear is provided with a one-way bearing, so that when the transmission rack moves backward, the synchronous belt does not rotate in the opposite direction with the first transmission gear, and when the transmission rack moves forward, the first transmission gear drives the synchronous belt to rotate, thereby realizing the separation of the unslotting and rotating motions.

[0013] Preferably, the pressing mechanism includes a pressure roller and an insulating base plate. The pressure roller is coaxially connected to a crank rocker arm, and the other end of the crank rocker arm is connected to a second transmission gear. The crank rocker arm and the second transmission gear are coaxially fixed in the opening of the support plate. The second transmission gear meshes with a transmission rack. When the transmission rack moves, it drives the crank rocker arm to rotate through the second transmission gear, so that the pressure roller applies downward pressure to the insulating explosion groove.

[0014] Preferably, a support spring is provided at the lower end of the crank rocker arm. One end of the support spring is coaxial with the crank rocker arm, and the other end is fixed to the support plate. The support spring is used to provide a pulling force to pull up the pressure roller when the second transmission gear disengages from the transmission rack.

[0015] Preferably, it further includes a yarn feeding mechanism, which includes a pressure plate and a yarn feeding wheel. The pressure plate is connected to a third transmission gear. The lower end of the yarn feeding wheel is provided with a sliding support and a support spring. The yarn carrier is located between the pressure plate and the yarn feeding wheel. The support spring is used to ensure that the yarn carrier is pressed between the pressure plate and the yarn feeding wheel during the yarn feeding process and during the stationary process.

[0016] Compared with the prior art, the present invention provides a slot-changing electro-explosive spraying device, which has the following beneficial effects: 1. This type of slot-changing electro-explosive spraying device has multiple insulating explosion slots set on the synchronous belt. During the step-by-step slot changing process, the insulating explosion slots first exit the detonation position and open, and then rotate and enter the slot. The carrier belt is not affected by the compression of the channel and the high temperature inside the explosion slot during the slot changing process, which effectively avoids the problem of carrier belt breakage and improves the stability of continuous electro-explosive operation. At the same time, the insulating explosion slots are set on the synchronous belt, and each insulating explosion slot can be installed and disassembled independently. If any insulating explosion slot is damaged, only the single explosion slot needs to be replaced, without the need for overall replacement, which greatly reduces the use cost and maintenance difficulty. 2. This type of slot-changing electro-explosive spraying device, through the cooperation of transmission rack, drive rod and stop rod, realizes the step-by-step slot-changing action of slot withdrawal, slot rotation and slot entry. When the slot is withdrawn, the insulating explosion slot is in an open state and is separated from the detonation position. When the slot is rotated, the synchronous belt drives the new explosion slot to the slot entry position. When the slot is entered, the new explosion slot enters the detonation position and is pressed by the clamping mechanism to close the explosion slot. Compared with the existing circular motion slot-changing method, the step-by-step slot-changing effectively avoids the problem of breakage of the carrier belt due to channel compression and high temperature during the slot-changing process, and improves the stability of continuous electro-explosive operation. 3. This type of slot-changing electro-explosive spraying device, by designing the insulating explosion slot into two parts, an upper explosion slot and a lower explosion slot, facilitates the entry of the carrier belt into the explosion slot channel during slot changing. The clamping mechanism applies pressure to seal the insulating explosion slot into a closed state. The upper explosion slot is equipped with a slot-type constraint cavity, which allows the spraying material to be sprayed onto the substrate at high speed and direction, and refines the sprayed particles. The degree of bonding between the spraying material and the substrate is improved, and the deposition distance of the coating is increased. It can be used for large-area spraying and preparation of thick coatings. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a slot-changing electro-explosive spraying device according to the present invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of a slot-changing electro-explosive spraying device according to the present invention. Figure 2 ; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a three-dimensional structural diagram of the insulating explosion tank of a slot-changing electro-explosive spraying device according to the present invention. Figure 5 This is a schematic diagram of the explosive structure of the insulating explosive tank of a slot-changing electro-explosive spraying device according to the present invention. Figure 6 This is a schematic diagram of the internal structure of the insulating explosion tank of a slot-changing electro-explosive spraying device according to the present invention; Figure 7 This is a three-dimensional structural diagram of the carrier ribbon of a slot-changing electro-explosive spraying device according to the present invention.

[0018] In the diagram: 1. Mounting plate; 101. First stop lever; 102. Second stop lever; 2. Transmission rack; 201. Drive rod; 3. First transmission gear; 4. Cylinder; 5. Transmission synchronous pulley; 6. Driven synchronous pulley; 7. Synchronous belt; 8. Insulating explosion groove; 801. Load high-voltage electrode; 802. Load grounding electrode; 803. Channel; 804. Upper explosion groove; 805. Lower explosion groove; 806. Insulating explosion cavity; 9. Carrying wire; 901. Positioning groove; 902. Metal wire; 1 0. Pressing mechanism; 1001. Pressing roller; 1002. Insulating base plate; 1003. Crank rocker arm; 1004. Second transmission gear; 1005. Support plate; 1006. Support spring; 11. Wire feeding mechanism; 1101. Pressing disc; 1102. Wire feeding wheel; 1103. Third transmission gear; 1104. Sliding support; 1105. Support compression spring; 12. First guide wheel; 13. Second guide wheel; 14. Guide assembly; 1401. Guide rod; 1402. Guide compression spring. Detailed Implementation

[0019] 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.

[0020] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a slot-changing electro-explosive spraying device.

[0021] Example 1

[0022] Please see Figure 1 - Figure 7 A slot-changing type electric explosion spraying device includes a mounting plate 1 and a pressing mechanism 10. A first transmission gear 3 is installed at one end of the mounting plate 1. The first transmission gear 3 meshes with a transmission rack 2. A cylinder 4 is provided at one end of the transmission rack 2. The cylinder 4 is used to drive the transmission rack 2 to move back and forth. The lower end of the transmission rack 2 is provided with a drive rod 201, and the mounting plate 1 is provided with a first stop rod 101 and a second stop rod 102. The drive rod 201 is located between the first stop rod 101 and the second stop rod 102. When the transmission rack 2 moves back and forth, the drive rod 201 can contact the first stop rod 101 or the second stop rod 102 to drive the mounting plate 1 to move back and forth to complete the process of entering or exiting the groove. The mounting plate 1 is equipped with a drive synchronous pulley 5 and a driven synchronous pulley 6. The drive synchronous pulley 5 is coaxially arranged with the first drive gear 3. The drive synchronous pulley 5 and the driven synchronous pulley 6 are connected by a synchronous belt 7. When the drive rack 2 moves forward, it drives the synchronous belt 7 to rotate through the first drive gear 3 so that different insulating explosion slots 8 enter the detonation position. The synchronous belt 7 is provided with multiple insulating explosion grooves 8 at intervals along the direction of movement. The insulating explosion grooves 8 are equipped with a load high voltage electrode 801, a load grounding electrode 802 and a channel 803 for the carrier belt 9 to pass through. The outer ends of the channel 803 are respectively provided with a first guide wheel 12 and a second guide wheel 13. The carrier belt 9 enters the channel 803 through the first guide wheel 12 and is sent out through the second guide wheel 13. The clamping mechanism 10 is used to apply downward pressure to the open insulating explosion groove 8 so that it closes.

[0023] During operation, the transmission rack 2 is driven to move back and forth by the cylinder 4. This engages with the drive rod 201 at the lower end of the transmission rack 2, which contacts the first stop 101 and the second stop 102 on the mounting plate 1. When retracting from the slot, the transmission rack 2 moves backward, and the drive rod 201 contacts the second stop 102, causing the mounting plate 1 to move backward as a whole, thus removing the insulating explosion slot 8 from the detonation position. When rotating, the transmission rack 2 moves forward. During the idle stroke phase between the first stop 101 and the second stop 102, the first transmission gear 3 drives the synchronous belt 7 to rotate, bringing the new insulating explosion slot 8 to the ready-to-enter position. During entry, the transmission rack 2 continues to move forward, and the drive rod 201 engages with the first stop 101 and the second stop 102. 1. Contact drives the mounting plate 1 to move forward as a whole, allowing the new insulating explosion slot 8 to enter the detonation position. Compared with the existing circular motion slot changing method, the step-by-step slot changing process allows the insulating explosion slot 8 to first exit the detonation position and open, and then rotate and enter the slot. During the slot changing process, the carrier belt 9 is protected from the squeezing of the channel 803 and the high temperature inside the explosion slot, effectively avoiding the breakage problem of the carrier belt 9 and improving the stability of continuous electric explosion operation. At the same time, the insulating explosion slot 8 is set on the synchronous belt 7, and each insulating explosion slot 8 can be installed and removed independently. If any insulating explosion slot 8 is damaged, only the single explosion slot needs to be replaced, without the need for overall replacement, which greatly reduces the use cost and maintenance difficulty.

[0024] Example 2

[0025] The difference from the above embodiments is that, please refer to... Figure 1 - Figure 7 The insulating explosion groove 8 is divided into an upper explosion groove 804 and a lower explosion groove 805. The upper explosion groove 804 is provided with a load high voltage electrode 801 and an insulating explosion cavity 806. The lower explosion groove 805 is provided with a load grounding electrode 802 and a guide component 14. After the upper explosion groove 804 and the lower explosion groove 805 are aligned and closed, a channel 803 is formed.

[0026] The guide assembly 14 is located in the openings of the upper explosion groove 804 and the lower explosion groove 805. The guide assembly 14 includes a guide rod 1401 and a guide spring 1402. After the clamping mechanism 10 is released, the guide spring 1402 is reset from the compressed state and lifts the upper explosion groove 804, so that the insulating explosion groove 8 maintains the opening and limiting effect.

[0027] The channel 803 is formed by the upper explosion groove 804 and the lower explosion groove 805 under the downward pressure applied by the clamping mechanism 10. The width of the sealed channel 803 in the direction perpendicular to the movement of the carrier ribbon 9 is adapted to the size of the carrier ribbon 9 in that direction, so as to seal the carrier ribbon 9 in the channel 803.

[0028] The carrier tape 9 has a positioning groove 901 inside, and a metal wire 902 is provided in the positioning groove 901. The depth of the positioning groove 901 is less than the diameter of the metal wire 902. The metal wire 902 and the carrier tape 9 are fixed in the positioning groove 901 at predetermined intervals along the length direction by dispensing glue. The metal wire 902 between adjacent glue dispensing points is exposed on the outside of the carrier tape 9 for use in the discharge area air gap discharge for electro-explosive spraying.

[0029] During the slot replacement process, the insulating explosion slot 8 is in an open state. The carrier tape 9 enters the channel 803 between the upper explosion slot 804 and the lower explosion slot 805 along the first guide wheel 12, avoiding the effects of compression from the channel 803 and the high temperature inside the explosion slot. After the pressing mechanism 10 applies downward pressure, the upper explosion slot 804 and the lower explosion slot 805 align and close, sealing the channel 803. The width of the sealed channel 803 in the direction perpendicular to the movement of the carrier tape 9 matches the size of the carrier tape 9 in that direction, sealing the carrier tape 9 within the channel 803 to prevent lateral leakage of particles during spraying. After the discharge is completed, the pressing mechanism 10 is released, and the guide spring 1402 in the guide assembly 14 returns to its original compressed state and lifts the upper explosion slot 804, restoring the opening and limiting effect of the insulating explosion slot 8. The guide rod 1401 plays a guiding role within the opening, ensuring the replacement... The reliability and guiding stability of the insulating explosion groove 8 during the troughing process prepare for the next cycle. The carrier wire 9 is provided with a positioning groove 901. The depth of the positioning groove 901 is less than the diameter of the metal wire 902 inside it, so that the metal wire 902 partially protrudes from the surface of the carrier wire 9. The metal wire 902 is fixed in the positioning groove 901 at predetermined intervals along the length direction by dispensing glue at the glue points. After each trough change, a section of bare metal wire 902 enters the channel 803 to be electro-exploded in the discharge area between the load high voltage electrode 801 and the load ground electrode 802. The spraying material is directionally and high-speed sprayed onto the substrate from the insulating explosion cavity 806 and the spraying particles are refined to increase the coating deposition distance. The glue dispensing method to fix the metal wire 902 effectively prevents loosening. The bare section can prevent the pulse voltage air gap discharge from failing to break down the carrier wire 9.

[0030] Example 3

[0031] The difference from the above embodiments is that, please refer to... Figure 1 - Figure 7 The first transmission gear 3 is equipped with a one-way bearing. When the transmission rack 2 moves backward, the synchronous belt 7 does not rotate in the opposite direction with the first transmission gear 3. When the transmission rack 2 moves forward, the first transmission gear 3 drives the synchronous belt 7 to rotate, which is used to realize the separation of the movement of unslotting and rotating.

[0032] The pressing mechanism 10 includes a pressure roller 1001 and an insulating base plate 1002. The pressure roller 1001 is coaxially connected to a crank rocker arm 1003. The other end of the crank rocker arm 1003 is connected to a second transmission gear 1004. The crank rocker arm 1003 and the second transmission gear 1004 are coaxially fixed in the opening of the support plate 1005. The second transmission gear 1004 meshes with the transmission rack 2. When the transmission rack 2 moves, it drives the crank rocker arm 1003 to rotate through the second transmission gear 1004, so that the pressure roller 1001 applies downward pressure to the insulating explosion groove 8.

[0033] A support spring 1006 is provided at the lower end of the crank rocker arm 1003. One end of the support spring 1006 is coaxial with the crank rocker arm 1003, and the other end is fixed to the support plate 1005. The support spring 1006 is used to provide tension to pull up the pressure roller 1001 when the second transmission gear 1004 disengages from the transmission rack 2.

[0034] When the transmission rack 2 moves backward to exit the slot, the one-way bearing inside the first transmission gear 3 prevents the synchronous belt 7 from rotating in the opposite direction. The insulating explosion slot 8 only moves backward with the mounting plate 1 to exit the insulating base plate 1002 without rotating. When the transmission rack 2 moves forward to rotate the slot, the first transmission gear 3, under the action of the one-way bearing, drives the synchronous belt 7 to rotate one slot position, so that the new insulating explosion slot 8 reaches the ready-to-enter position, realizing the separation of the slot exit and rotation movements, ensuring the reliability of the step-by-step slot change. After the insulating explosion slot 8 enters the detonation position of the insulating base plate 1002, the transmission rack 2, through meshing with the second transmission gear 1004, can drive the crank rocker arm 1003 to rotate, so that the pressure roller 1001, which is coaxial with the crank rocker arm 1003, rotates clockwise to the top of the upper explosion slot 804 to apply downward pressure, thus moving the insulating explosion slot 8 from the... Electro-explosive spraying is performed from the open state to the closed state. After the discharge, the second transmission gear 1004 disengages from the transmission rack 2, and the support spring 1006 at the lower end of the crank rocker 1003 provides tension to pull up the pressure roller 1001. The pressing mechanism 10 is released, preparing for the next cycle of slot changing. Several independently replaceable insulating explosion slots 8 are evenly distributed on the synchronous belt 7. When an insulating explosion slot 8 completes electro-explosive spraying, the transmission mechanism drives the synchronous belt 7 to rotate, so that the next insulating explosion slot 8 enters the detonation position, realizing continuous slot changing spraying and improving spraying efficiency. The one-way bearing realizes the separation of the slot removal and slot rotation movements, avoiding the synchronous belt 7 from rotating in the opposite direction during the slot removal process. The pressing mechanism 10 automatically completes the pressing and releasing actions under the drive of the transmission rack 2, ensuring the continuity of the slot changing work.

[0035] Example 4

[0036] The difference from the above embodiments is that, please refer to... Figure 1 - Figure 7 The slot-type electro-explosive spraying device also includes a wire feeding mechanism 11, which includes a wire pressing plate 1101 and a wire feeding wheel 1102. The wire pressing plate 1101 is connected to a third transmission gear 1103. The lower end of the wire feeding wheel 1102 is provided with a sliding support 1104 and a support spring 1105. The wire carrier 9 is located between the wire pressing plate 1101 and the wire feeding wheel 1102. The support spring 1105 is used to ensure that the wire carrier 9 is pressed between the wire pressing plate 1101 and the wire feeding wheel 1102 during the wire feeding process and the stationary process.

[0037] During the wire feeding process, the third transmission gear 1103 drives the pressure plate 1101 to rotate, and the carrier wire 9 is fed forward between the pressure plate 1101 and the feeding wheel 1102. The exposed metal wire 902 section of the carrier wire 9 is pressed down by the pressure plate 1101 and changes direction towards the explosion chamber injection port by the first guide wheel 12, so that the metal wire 902 can perform air gap discharge with the electrode. The support spring 1105 at the lower end of the feeding wheel 1102 keeps the carrier wire 9 pressed between the pressure plate 1101 and the feeding wheel 1102 during the wire feeding process and the stationary process, ensuring the continuity and reliability of the wire feeding. During the troughing stage, the wire feeding mechanism 11 simultaneously feeds the new carrier wire 9 into the channel 803 along the first guide wheel 12, and the carrier wire 9 after the explosion is sent out by the second guide wheel 13, realizing the continuous feeding and discharge of the carrier wire 9.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slot-changing type electro-explosive spraying device, comprising a mounting plate and a clamping mechanism, characterized in that: A first transmission gear is mounted on one end of the mounting plate. The first transmission gear meshes with a transmission rack. A cylinder is provided on one end of the transmission rack. The cylinder is used to drive the transmission rack to move back and forth. The lower end of the transmission rack is provided with a drive rod, and the mounting plate is provided with a first stop and a second stop. The drive rod is located between the first stop and the second stop. When the transmission rack moves back and forth, it can make the drive rod contact the first stop or the second stop, so as to drive the mounting plate to move back and forth to complete the process of entering or exiting the groove. The mounting plate is equipped with a drive synchronous pulley and a driven synchronous pulley. The drive synchronous pulley is coaxially arranged with the first drive gear. The drive synchronous pulley and the driven synchronous pulley are connected by a synchronous belt. When the drive rack moves forward, it drives the synchronous belt to rotate through the first drive gear, so that different insulating explosion slots enter the detonation position. The synchronous belt is provided with multiple insulating explosion grooves at intervals along the direction of movement. The insulating explosion grooves are equipped with load high voltage electrodes, load grounding electrodes and channels for the carrier belt to pass through. The two ends of the channel are respectively provided with a first guide wheel and a second guide wheel. The carrier belt enters the channel through the first guide wheel and is sent out through the second guide wheel. The clamping mechanism is used to apply downward pressure to the open insulating explosion groove so that it closes.

2. The slot-changing electro-explosive spraying device according to claim 1, characterized in that: The insulating explosion groove is divided into an upper explosion groove and a lower explosion groove. The upper explosion groove is provided with a load high-voltage electrode and an insulating explosion cavity, and the lower explosion groove is provided with a load grounding electrode and a guide assembly. The upper explosion groove and the lower explosion groove are aligned and closed to form the channel.

3. The slot-changing electro-explosive spraying device according to claim 2, characterized in that: The guide assembly is located within the openings of the upper and lower explosion grooves. The guide assembly includes a guide rod and a guide spring. After the clamping mechanism is released, the guide spring resets from its compressed state and lifts the upper explosion groove, so that the insulating explosion groove maintains its opening and limiting effect.

4. The slot-changing electro-explosive spraying device according to claim 2, characterized in that: The channel is formed by the upper and lower explosion grooves under the downward pressure applied by the clamping mechanism. The width of the sealing channel perpendicular to the direction of movement of the carrier ribbon is adapted to the size of the carrier ribbon in that direction, so as to seal the carrier ribbon in the channel.

5. The slot-changing electro-explosive spraying device according to claim 4, characterized in that: The carrier ribbon has a positioning groove inside, and a metal wire is provided in the positioning groove. The depth of the positioning groove is less than the diameter of the metal wire. The metal wire and the carrier ribbon are fixed in the positioning groove at predetermined intervals along the length direction by dispensing glue at the glue dispensing points. The metal wire between adjacent glue dispensing points is exposed on the outside of the carrier ribbon for electro-explosive spraying by air gap discharge in the discharge area.

6. The slot-changing electro-explosive spraying device according to claim 1, characterized in that: The first transmission gear is equipped with a one-way bearing. When the transmission rack moves backward, the synchronous belt does not rotate in the opposite direction with the first transmission gear. When the transmission rack moves forward, the first transmission gear drives the synchronous belt to rotate, which is used to realize the separation of the unslotting and rotating motions.

7. The slot-changing electro-explosive spraying device according to claim 1, characterized in that: The pressing mechanism includes a pressure roller and an insulating base plate. The pressure roller is coaxially connected to a crank rocker arm, and the other end of the crank rocker arm is connected to a second transmission gear. The crank rocker arm and the second transmission gear are coaxially fixed in the opening of the support plate. The second transmission gear meshes with a transmission rack. When the transmission rack moves, it drives the crank rocker arm to rotate through the second transmission gear, so that the pressure roller applies downward pressure to the insulating explosion groove.

8. The slot-changing electro-explosive spraying device according to claim 7, characterized in that: The lower end of the crank rocker arm is provided with a support spring. One end of the support spring is coaxial with the crank rocker arm, and the other end is fixed to the support plate. The support spring is used to provide a pulling force to pull up the pressure roller when the second transmission gear disengages from the transmission rack.

9. The slot-changing electro-explosive spraying device according to claim 1, characterized in that: It also includes a yarn feeding mechanism, which includes a yarn pressing plate and a yarn feeding wheel. The yarn pressing plate is connected to a third transmission gear. The lower end of the yarn feeding wheel is provided with a sliding support and a support spring. The yarn carrier is located between the yarn pressing plate and the yarn feeding wheel. The support spring is used to ensure that the yarn carrier is pressed between the yarn pressing plate and the yarn feeding wheel during the yarn feeding process and during the stationary process.

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