A molding device for emulsion explosives after extrusion

Abstract

This invention discloses a forming device for extruded emulsion explosives, including an extrusion tube, a filling and forming mechanism, a bag conveying mechanism, and a sealing assembly. The extrusion tube is vertically downward, with a sealing slider at the bottom. The filling and forming mechanism is located on the ground below the extrusion tube, and the sealing slider slides into contact with the end of the filling and forming mechanism. Multiple filling and forming mechanisms are arranged side by side and mounted on a conveying assembly for circular conveying. A bag conveying mechanism is located below the filling and forming mechanism, and sealing assemblies are located below the front end and above the rear end of the bag conveying mechanism. The invention uses cylindrical bags for filling, so there is no heat-sealing line on the side of the bag during filling, thus preventing the bag from bursting during filling.

Description

Technical Field

[0001] This invention relates to the field of emulsion explosive extrusion loading equipment, and more specifically to a forming device for emulsion explosive after extrusion. Background Technology

[0002] Current emulsion explosive extrusion packaging primarily uses an extrusion method. After extrusion, the emulsion explosive is filled into bags. Multiple rotating robotic arms grip the bagged explosive, separating each section by rotating the grippers. Sealing clamps are then used to seal both ends of each section with wire. Finally, a cutter separates each section for transport to the next process. The filling process for these emulsion explosives requires pipes made from hot-pressed bags (i.e., plastic sheets). The bag is formed by hot pressing, and the edge of the bag has a heat-sealed line. Since filling is carried out immediately after heat sealing, the heat seal needs to cool down to achieve stability. Filling while hot sealing is in progress, and when the filling volume is large, the heat-sealed line of the bag is prone to bursting. At the same time, the bag needs to be fitted onto the extrusion tube during hot pressing. Due to the danger of emulsion explosives in high-temperature environments, there are risks associated with filling the bag while hot pressing. In addition, filling the bag immediately after hot pressing poses a risk of bursting at the hot pressing point. As a result, the emulsion explosive in the bag is not completely filled during filling, causing the bag to become soft and difficult to process later. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention proposes a forming device for extruded emulsion explosives, which facilitates the use of an integral cylindrical bag during filling, eliminating the need for simultaneous filling and heat pressing of the bag. Furthermore, the bag is filled with a large amount of emulsion explosive, ensuring complete coverage and facilitating subsequent processing.

[0004] To achieve the above objectives, the present invention provides a molding device for extruded emulsion explosive, comprising an extrusion tube, a filling and molding mechanism, a bag conveying mechanism, and a sealing assembly. The extrusion tube is vertically downward, with a sealing slider at the bottom. A filling and molding mechanism is located on the ground below the extrusion tube, and the sealing slider slides into contact with the end of the filling and molding mechanism. Multiple filling and molding mechanisms are arranged side by side and mounted on a conveying assembly for circular conveying. A bag conveying mechanism is located below the filling and molding mechanism, and the filling and molding mechanism are connected. The emulsion explosive in the filling and molding mechanism is filled into the bag of the bag conveying mechanism. A sealing assembly is located below the front end and above the rear end of the bag conveying mechanism to seal the upper and lower ends of the bag.

[0005] Preferably, the filling and forming mechanism includes a temporary storage cylinder, a top slide, a feeding funnel, and an elastic lifting assembly. Multiple temporary storage cylinders are arranged vertically side by side. A top slide is fixed to the top of each temporary storage cylinder. The top of the top slide is in contact with the bottom of the conveying assembly. The temporary storage cylinder is connected to the bottom of the top slide. A feeding funnel is inserted into each temporary storage cylinder. A notch for the feeding funnel to extend is opened at the bottom of the temporary storage cylinder. The edge of the feeding funnel is in contact with the inner wall of the temporary storage cylinder. An elastic lifting assembly is provided between the bottom of the feeding funnel and the inner wall of the temporary storage cylinder. Multiple sets of pistons that can be raised and lowered are provided above the temporary storage cylinder. The pistons descend and extend into the temporary storage cylinder. The bottom of the pistons is in contact with the inner wall of the feeding funnel.

[0006] Preferably, the top of the multiple temporary storage cylinders is provided with an annular guide rail, and the top slide plate slides on the guide rail, with the top of the top slide plate fitting against the bottom of the guide rail. The edges of the top slide plates of the multiple temporary storage cylinders fit together. A conveying component is provided on the guide rail and connected to the top slide plate, thus realizing the movement of the top slide plate on the guide rail. Multiple through holes are opened in the guide rail, and sealing sliders are embedded in the through holes. The temporary storage cylinders are filled through the extrusion tube. A lifting rod is installed on the guide rail and passes through the guide rail. A groove is opened at the bottom of the guide rail for a piston to pass through. The lifting rod is connected to the top of the piston. A spring is sleeved on the lifting rod, and a pressing cylinder is fixed at the top of the lifting rod. The lifting rod is pressed down by pressing the cylinder.

[0007] Preferably, an unwinding assembly is provided above the front end of the bag conveying mechanism, and a rolled-up bag is provided on the unwinding assembly. A traction assembly and a cutting assembly are provided between the unwinding assembly and the bag conveying mechanism. The traction assembly includes a conveying chain and a clamping assembly. A vertical conveying chain driven by a motor and gears is provided on the front side of the unwinding assembly. A clamping assembly is installed on the conveying chain. The clamping assembly consists of multiple sets of clamping arms arranged at equal intervals. Multiple sets of clamping arms are installed on the outer wall of the conveying chain by hinge. Each set of clamping arms is equipped with a torsion spring to open the clamping arm. Clamping plates are provided on both sides of the conveying chain to press the clamping arms together. The top of the two clamping plates is a flared opening.

[0008] Preferably, the bag conveying mechanism includes fixed rods, moving components, and clamping components. The fixed components are arranged with the bag body close to the top two sides. Each set of fixed rods consists of two fixed rods arranged side by side. A moving component is installed on each fixed rod, and a negative pressure component is installed on the moving component. The negative pressure component adsorbs the outer wall of the bag body. Clamping components are arranged on both sides of the bag body. The clamping components are divided into two groups, and the two groups of clamping components clamp the upper and lower ends of the bag body respectively. The bag body moves on the clamping components. The clamping component at the upper end is divided into multiple sections. The negative pressure component is linked to the clamping component at the top. When the negative pressure component opens, the clamping component at the top opens.

[0009] Preferably, the clamping assembly at the top includes a clamping rod and a displacement rod. A clamping rod is installed on each fixed rod. The clamping rod is divided into multiple sections, and the length of each clamping rod is the same as the width of the bag. A displacement rod is fixed on each clamping rod section. The displacement rod is a multi-faceted rod. Multiple guide holes are opened on the fixed rod for the displacement rod to be inserted into, and the displacement rod extends and retracts within the guide holes. The displacement rod slides into the fixed rod. A spring is sleeved on the displacement rod to close the clamping rod. A groove is opened at the top of the clamping rod. A linkage piece is fixed at the bottom of the negative pressure assembly and slides within the groove of the clamping rod. When the negative pressure assembly moves outward, the clamping rod opens.

[0010] Preferably, the negative pressure component is a negative pressure adsorption head, on which an elastic telescopic rod is installed, a limit rod is fixed at the top of the negative pressure adsorption head, and a limiting inclined block is set above the negative pressure adsorption head. When the negative pressure adsorption head moves, the limit rod moves along the limiting inclined block, so that the negative pressure adsorption head opens the bag and the corresponding clamping component opens at the same time.

[0011] Preferably, a baffle plate is provided in the notch at the bottom of the temporary storage cylinder, and the top of the baffle plate is attached to the bottom of the discharge funnel, thus restricting the descent and unloading of the discharge funnel by the baffle plate; the baffle plate is slidably engaged with the bottom of the temporary storage cylinder, and the circular baffle plate is divided into two halves. A spring is provided between the baffle plate and the temporary storage cylinder, and the baffle plate is closed by the spring. A downwardly extending protrusion is provided at the bottom of the baffle plate. When the negative pressure suction head opens, the top of the limiting rod abuts against the inside of the protrusion, thus opening the baffle plate. The moving speed of the temporary storage cylinder is the same as the moving speed of the bag body.

[0012] Preferably, the sealing assembly is a cold-press sealing machine.

[0013] Compared with the prior art, the advantages of the present invention are as follows:

[0014] This invention uses a cylindrical bag for filling, so that there is no heat seal line on the side of the bag during filling, thus avoiding the bag from bursting during filling.

[0015] Temporary storage tubes are used for temporary storage to ensure the amount filled each time. Secondary filling is then performed through the temporary storage tubes, allowing multiple bags to be filled at once, thus ensuring efficiency. At the same time, the bottom of the bag is clamped during filling to prevent the bottom seal of the bag from opening during filling. Attached Figure Description

[0016] Figure 1 This is a top view of the present invention.

[0017] Figure 2 This is a perspective view of the present invention without the conveying component.

[0018] Figure 3 This is the front view of the present invention.

[0019] Figure 4 This is a front view of the bag conveying mechanism of the present invention.

[0020] Figure 5 This is a top view of the bag conveying mechanism of the present invention.

[0021] Figure 6 This is a partial schematic diagram of the bag conveying mechanism of the present invention.

[0022] Figure 7 This is a cross-sectional view of the bag filling and forming mechanism of the present invention.

[0023] Figure 8 This is a top view of the filling and molding mechanism of the present invention.

[0024] Figure 9 This is a schematic diagram of the temporary storage cylinder of the present invention being inverted.

[0025] Figure 10 This is a schematic diagram of the temporary storage cylinder after it has been cut in half according to the present invention.

[0026] Figure 11 This is a schematic diagram of the clamping rod, displacement rod, and fixing rod of the present invention.

[0027] Figure 12 This is a schematic diagram of the unwinding assembly of the present invention.

[0028] Figure 13 This is a partial schematic diagram of the traction assembly, clamping assembly, and clamping plate of the present invention.

[0029] Figure 14 This is a schematic diagram of the traction assembly, clamping plate, and cutting assembly of the present invention.

[0030] Figure 15 This is a schematic diagram of the limiting rod, lifting block, baffle plate, and protrusion of the present invention.

[0031] The components are as follows: 1. Extrusion tube, 2. Sealing slider, 3. Conveying assembly, 4. Guide rail, 5. Filling and forming mechanism, 6. Temporary storage cylinder, 7. Top slide plate, 8. Feeding funnel, 9. Elastic lifting assembly, 10. Piston, 11. Lifting rod, 12. Pressing cylinder, 13. Bag conveying mechanism, 14. Fixed rod, 15. Moving assembly, 16. Negative pressure assembly, 17. Negative pressure adsorption head, 18. Elastic telescopic rod, 19. Limiting rod, 20. Clamping assembly, 21. Clamping rod, 22. Displacement rod, 23. Guide hole, 24. Linkage plate, 25. Limiting inclined block, 26. Sealing assembly, 27. Cold press sealing machine, 28. Unwinding assembly, 29. Traction assembly, 30. Conveying chain, 31. Clamping assembly, 32. Clamping arm, 33. Clamping plate, 34. Cutting assembly, 35. Material baffle, 36. Protrusion, 37. Lifting block. Detailed Implementation

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] like Figure 1-15 As shown, a forming device for extruded emulsion explosives includes an extrusion tube 1, a filling and forming mechanism 5, a bag conveying mechanism 13, and a sealing assembly 26. Multiple extrusion tubes 1 extend vertically downwards, through which emulsion explosives are extruded. A sealing slider 2 is fixed to the bottom of the extrusion tube 1 by welding. The filling and forming mechanism 5 is positioned on the ground below the extrusion tubes 1, and the emulsion explosives in the extrusion tubes 1 are directly filled into the filling and forming mechanism 5. The sealing slider 2 slides against the end of the filling and forming mechanism 5. Multiple filling and forming mechanisms 5 are arranged side-by-side, allowing the extrusion tubes 1 to sequentially fill the multiple filling and forming mechanisms 5. The multiple filling and forming mechanisms 5 are mounted on the conveying assembly 3 for circular conveying. The conveying assembly 3 sequentially transports the multiple filling and forming mechanisms 5 below the extrusion tubes 1 for filling. Below the filling and forming mechanism 5, a bag conveying mechanism 13 is positioned, with bags arranged side-by-side. The bag conveying mechanism 13 moves the bag body to the bottom of the filling and forming mechanism 5. The filling and forming mechanism 5 docks with the bag conveying mechanism 13. The emulsion explosive in the filling and forming mechanism 5 is filled into the bag body of the bag conveying mechanism 13. Sealing components 26 are provided at the bottom of the front end and the top of the rear end of the bag conveying mechanism 13. The sealing components 26 are commercially available cold-press sealing machines 27. The cold-press sealing machine 27 seals the top and bottom of the bag body. That is, when the bag body is first picked up and conveyed by the bag conveying mechanism 13, the bottom of the bag body passes through the sealing components 26 under the action of the bag conveying mechanism 13. After the bottom of the bag body is sealed by the sealing components 26, it continues to be conveyed backward. When the bag body is filled by the filling and forming mechanism 5, the bag conveying mechanism 13 continues to be conveyed backward. The top of the bag body passes through the sealing port above the rear end of the bag conveying mechanism 13 and is gradually sealed. The sealing components 26 seal the top and bottom ends of the bag body separately, thus completing the filling of the emulsion explosive.

[0034] The filling and forming mechanism 5 includes a temporary storage cylinder 6, a top sliding plate 7, a feeding funnel 8, and an elastic lifting assembly 9. Multiple temporary storage cylinders 6 are arranged vertically side-by-side. A top sliding plate 7 is welded to the top of each temporary storage cylinder 6, and the top sliding plate 7 is flush with the top of the temporary storage cylinder 6. A through hole with the same radius as the temporary storage cylinder 6 is opened on the top sliding plate 7. The top of the top sliding plate 7 is in contact with the bottom of the sealing slider 2. When the temporary storage cylinder 6 moves below the extrusion tube 1, the top of the top sliding plate 7 is in contact with the bottom of the sealing slider 2, thus preventing leakage during filling. Simultaneously, when the temporary storage cylinder 6 moves, the top sliding plate 7 can seal the extrusion tube 1, thus preventing leakage of the emulsion explosive. A feeding funnel 8 is inserted into each temporary storage cylinder 6, and the outer top of the feeding funnel 8 is in contact with the inner wall of the temporary storage cylinder 6, allowing the feeding funnel 8 to rise and fall along the inner wall of the temporary storage cylinder 6. A circular notch is opened at the bottom of the temporary storage cylinder 6 for the feeding funnel 8 to extend out. The edge of the feeding funnel 8 is fitted against the inner wall of the temporary storage cylinder 6. An elastic lifting component 9, which is a spring, is installed between the bottom of the feeding funnel 8 and the inner wall of the temporary storage cylinder 6. The top of the elastic lifting component 9 rests against the bottom of the feeding funnel 8, thus lifting the feeding funnel 8. Multiple sets of lifting pistons 10 are installed above the temporary storage cylinder 6. The pistons 10 descend and extend into the temporary storage cylinder 6, with their bottoms fitting against the inner wall of the feeding funnel 8. When the temporary storage cylinder 6 needs to fill the bag, the pistons 10 extend into the top of the temporary storage cylinder 6 and press down, thus squeezing the emulsion explosive in the temporary storage cylinder 6 downward into the bag. When the pistons 10 press down, the feeding funnel 8 moves downward under the pressure of the pistons 10 and protrudes from the bottom of the temporary storage cylinder 6, thus extending the feeding funnel 8 into the top of the bag for filling.

[0035] Multiple storage cylinders 6 are equipped with an elongated circular guide rail 4 at their tops. The circular guide rail 4 is mounted on the ground via a bracket. The multiple storage cylinders 6 are conveyed along the circular guide rail 4. Inwardly recessed guide grooves are formed on the inner and outer walls of the circular guide rail 4. Two pulleys are mounted on the top of the top sliding plate 7 of each storage cylinder 6 via bearings. The two pulleys are respectively engaged in the guide grooves on both sides of the inner side of the circular guide rail 4, allowing the storage cylinder 6 to slide on the circular guide rail 4. The top of the top sliding plate 7 is in contact with the bottom of the guide rail 4, thus preventing leakage of the emulsion explosive inside the storage cylinder 6. The edges of the top sliding plates 7 of multiple storage cylinders 6 are in contact. When the storage cylinder 6 moves, if there is a gap in the top sliding plates 7, the emulsion explosive inside the extrusion cylinder will leak. This contact method of the top sliding plates 7 seals the bottom of the temporary extrusion tube 1 when the storage cylinder 6 moves. A conveying assembly 3 is provided on the guide rail 4 and is connected to the top sliding plates 7. Next, the top slide 7 moves on the guide rail 4. The conveying component 3 is driven by a motor to transport gears and chains. An annular groove for the moving chain to be inserted is opened on the inner wall of the annular guide groove. The chain is inserted into the annular groove. An arc-shaped baffle is fixed to the arc-shaped inner wall of the annular guide rail 4 by welding. The arc-shaped baffle makes the chain located at the arc of the annular guide rail 4 also arc-shaped. The motor is fixed to the top of the annular guide rail 4 by bolts. A gear is fixed on the output shaft of the motor. The gear meshes with the chain on the inner wall of the annular guide rail 4. The chain is fixed by the central shaft at the top of the pulley (the pulley is mounted on the central shaft by bearings, and the bottom of the central shaft is fixed to the top slide 7 by welding). Multiple through holes are opened on the top surface of the annular guide rail 4. The through holes are located on the straight section of the annular guide rail 4. Sealing sliders 2 are embedded in the through holes to facilitate installation. The temporary storage cylinder 6 is filled through the extrusion tube 1.A lifting rod 11 is installed on another straight section of the annular guide rail 4, passing through the guide rail 4. A groove is cut at the bottom of the guide rail 4 for the piston 10 to pass through. When the temporary storage cylinder 6 moves, the piston 10 needs to make way for the temporary storage cylinder 6, thus retracting the piston 10 into the groove at the bottom of the guide rail 4. The lifting rod 11 is connected to the top of the piston 10 by bolts. The lifting rod 11 extends through the guide rail 4 into the groove at the bottom of the guide rail 4. A spring is fitted onto the lifting rod 11. A pressing cylinder 12 is fixed to the top of the lifting rod 11. The pressing cylinder 12 presses down the lifting rod 11. The tops of multiple lifting rods 11 are fixed to the same flat plate by welding. The pressing cylinder 12 is fixed to the flat plate by bolts. The piston 10 of the pressing cylinder 12 is fixed to the top surface of the annular guide rail 4 by bolts. When the pressing cylinder 12 retracts, the flat plate descends, causing the lifting rod 11 to descend and extend into the temporary storage cylinder 6. The piston 10 inside the temporary storage cylinder 6 presses downwards to fill the cylinder.

[0036] An unwinding assembly 28 is provided above the front end of the bag conveying mechanism 13. A rolled-up bag is mounted on the unwinding assembly 28 (the unwinding assembly 28 is a rotating shaft; the bag is a tubular shape wound around the shaft, and the bag is unwound by rotating the shaft, and then cut into segments). A traction assembly 29 and a cutting assembly 34 are provided between the unwinding assembly 28 and the bag conveying mechanism 13. The traction assembly 29 unwinds the bag, and the cutting assembly 34 cuts the bag into multiple segments. Component 29 includes a conveyor chain 30 and a clamping assembly 31. A vertical conveyor chain 30, driven by a motor and gears, is located in front of the unwinding assembly 28. The vertical conveyor chain 30 is fitted onto two vertically arranged conveyor gears (the conveyor chain 30 meshes with the conveyor gears). The upper conveyor gear is welded to the motor, which drives the vertical conveyor chain 30 for vertical conveying. The clamping assembly 31 is installed on the conveyor chain 30. The clamping assembly 31 uses multiple... The conveyor chain 30 is composed of two equally spaced clamping arms 32. Multiple sets of clamping arms 32 are hinged to the outer wall of the conveyor chain 30. Each set consists of two clamping arms 32 rotatably connected. A vertically arranged rotating shaft is welded to the outer wall of the conveyor chain, and a sleeve is fitted onto the rotating shaft. The clamping arms 32 are welded to the sleeve, and torsion springs are welded to the clamping arms 32 and the rotating shaft. Each set of clamping arms 32 is equipped with a torsion spring to open the clamping arm 32. The left and right sides are provided with clamping plates 33, and the columns are installed on the ground by bolt fastening. The conveying gear is installed on the columns by bearings and is fixed to the columns by bolt fastening. When the clamping arm 32 moves to the position of the two clamping plates 33 by the vertical conveying chain 30, the clamping arm 32 closes to clamp the side of the bag body. Then the bag body is conveyed downward to the bag body conveying mechanism 13 by the conveying chain 30. The clamping plates 33 press the clamping arm 32 together. The top of the two clamping plates 33 is a flared mouth.At the start of operation, the end of the bag is pulled down between the clamping arms 32, while the conveyor chain 30 moves downward, pulling the bag down as well. When the clamping arms 32 reach the flared position, they slowly close to clamp the bag. Once clamped, no manual pulling is required; the bag is pulled down via the clamping arms 32 and the conveyor chain 30. Each clamping plate 33 has a rearward-extending mounting plate secured with bolts. The cutting assembly 34 uses a cutting blade to cut the bag between the two mounting plates. Two opposing cutting blades are installed between the mounting plates. A cutting cylinder is fixed to the cutting blades and mounting plates by bolts. The cutting cylinder causes the cutting blades to close and cut the bag. The cutting blades are flush with the top of the bag on the bag conveying mechanism 13. During operation, the bag is pulled downwards by the conveyor chain 30. When the bottom of the bag extends into the sealing assembly 26 and the top of the bag is attracted by the negative pressure assembly 16, the cutting assembly 34 cuts the bag into sections, which are then conveyed backwards by the bag conveying mechanism 13.

[0037] The bag conveying mechanism 13 includes fixed rods 14, moving components 15, and clamping components 20. The fixed components are positioned so that the bag is pressed against the top two sides. Each set of fixed rods 14 consists of two parallel fixed rods 14, which are fixed to the ground by columns. A moving component 15 (i.e., a chain and gears) is installed on each fixed rod 14. Gears are mounted at both ends of each fixed rod 14 via bearings, and the chain moves around the gears, meshing with them. A motor is bolted to the fixed rod 14 below the gears, and the motor's output shaft is fixedly connected to the gears. The bag is conveyed backward via the moving chain. A negative pressure component 16 is welded to the chain of the moving component 15. The negative pressure components 16 on the two moving components 15 are positioned opposite each other, adsorbing the outer wall of the bag. Thus, when the negative pressure component 16... 6. When moving, the bag body moves. When the two sets of negative pressure components 16 move away from each other, the top of the bag body opens. Clamping components 20 are set on both sides of the bag body. The clamping components 20 are divided into two groups. The two sets of clamping components 20 clamp the upper and lower ends of the bag body respectively. Clamping components 20 are also set at the lower end of the bag body to prevent the bottom cold seal position of the bag body from bursting during filling. After filling, the weight of the bag body increases. The clamping mechanism at the lower end can support the bag body and prevent it from falling. Each set of clamping components 20 consists of two rods arranged side by side. The distance between the two rods is the thickness of the bag body. The bag body moves on the clamping components 20. The clamping components 20 at the upper end are divided into multiple sections. The clamping components 20 at the top of the negative pressure component 16 are linked. When the negative pressure component 16 opens, the clamping components 20 at the top open, which facilitates filling.

[0038] The clamping assembly 20 located at the top includes clamping rods 21 and displacement rods 22. Clamping rods 21 are installed on each fixed rod 14. Each clamping rod 21 is divided into multiple sections, the length of which is the same as the width of the bag. The ends of the multiple clamping rod sections 21 are close together and arranged side-by-side. A displacement rod 22 is fixed to the outside of each clamping rod section 21 by welding. The displacement rod 22 is a multi-faceted rod. Multiple guide holes 23 are opened on the fixed rod 14 for the displacement rod 22 to insert into, and the displacement rod 22 extends and retracts within the guide holes 23. The multi-faceted design prevents the displacement rod 22 from rotating. The displacement rod 22 slides after being inserted into the fixed rod 14. A clamping rod 22 is fitted onto the displacement rod 22. A closing spring is used. A disc is fixed to the outer end of the displacement rod 22 by welding. A spring is fitted on the displacement rod 22 between the disc and the fixed rod 14. The two ends of the spring are fixed to the disc and the fixed rod 14. The spring moves the fixed rod 14 inward, thus closing the clamping rod 21. A groove is opened at the top of the clamping rod 21. The grooves on multiple clamping rods 21 are interconnected. A linkage piece 24 that slides in the groove of the clamping rod 21 is fixed to the bottom of the negative pressure assembly 16 by welding. When the negative pressure assembly 16 moves outward, the clamping rod 21 at the top opens under the action of the linkage piece 24, thus performing filling.

[0039] The negative pressure assembly 16 is a negative pressure adsorption head 17. Multiple negative pressure adsorption heads 17 are connected to a negative pressure pump through pipes, so that the negative pressure adsorption head 17 is in a negative pressure state to adsorb the outer wall of the bag. When the negative pressure adsorption head 17 moves to the end of the clamping assembly 20, the negative pressure state is released. An elastic telescopic rod 18 (the elastic telescopic rod 18 is a telescopic rod with a spring embedded in it) is installed between the negative pressure adsorption head 17 and the moving assembly 15. An upward extension is fixed to the top of the negative pressure adsorption head 17 by welding. The limiting rod 19 extends and a limiting inclined block 25 is set above the negative pressure adsorption head 17. The front end of the limiting inclined block 25 is an outward inclined surface on both sides, and the middle and rear sections of the limiting inclined block 25 are flat. The middle of the limiting inclined block 25 is hollowed out so that the material discharge funnel 8 can pass through for unloading. The limiting inclined block 25 is installed on the fixed rod 14 by a bracket. When the negative pressure adsorption head 17 moves, the limiting rod 19 moves along the limiting inclined block 25, so that the negative pressure adsorption head 17 opens the bag body, and at the same time the corresponding clamping component 20 opens.

[0040] A baffle plate 35 is installed in the notch at the bottom of the temporary storage cylinder 6. The top of the baffle plate 35 fits against the bottom of the discharge funnel 8. The baffle plate 35 supports the bottom of the discharge funnel 8, preventing it from descending and leaking when not filling. The baffle plate 35 restricts the descent and discharge of the discharge funnel 8. The baffle plate 35 slides with the bottom of the temporary storage cylinder 6. A slider is fixed to the top of the baffle plate 35, and a groove for the slider to fit into is opened at the bottom of the temporary storage cylinder 6. The circular baffle plate 35 is divided into two halves. A spring is welded between the baffle plate 35 and the temporary storage cylinder 6, allowing the baffle plate 35 to close. A downwardly extending protrusion 36 is welded to the bottom of the baffle plate 35. When negative pressure adsorption occurs... When the head 17 opens, the top of the limiting rod 19 abuts against the inside of the protrusion 36 (the top of the limiting rod 19 has a deep hole, and a rectangular lifting block 37 is inserted into the deep hole. The lifting block 37 abuts against the inside of the protrusion 36. The top of the lifting block 37 is a slope. A spring is set between the bottom of the lifting block 37 and the deep hole. The spring lifts the lifting block 37 upward. When the limiting rod 19 moves to the bracket connected to the limiting inclined block 25 and the fixing rod 14, the limiting rod 19 needs to avoid the bracket. The bracket contacts the slope of the top of the lifting block 37. The slope of the lifting block 37 presses down along the bracket. In this way, the lifting block 37 retracts into the deep hole to avoid the bracket. This opens the baffle plate 35, and the moving speed of the temporary storage cylinder 6 is the same as the moving speed of the bag body.

[0041] To ensure automated filling control, the motors of the drive conveyor assembly 3, the moving assembly 15, the vertical conveyor chain 30, the pressing cylinder 12, and the cutting cylinder are all connected to the output of the PLC controller. The motors are connected to the control system via encoders. The pressing cylinder 12 and the cutting cylinder are connected to the PLC controller via solenoid valves. The speeds of the moving assembly 15 and the vertical conveyor chain 30 are proportional and the coefficient remains constant. The linear speeds of the conveyor assembly 3 and the moving assembly 15 are the same.

[0042] During operation, the unwinding assembly 28 transports the bag sections one by one to the bag conveying mechanism 13. The sealing assembly 26 seals the bottom of the bag, which is then conveyed backward to the bottom of the temporary storage cylinder 6, so that the bag and the temporary storage cylinder 6 are vertically aligned. During the conveying process, the bag opens due to the action of the limiting inclined block 25, and the clamping rod 21 also opens. At the same time, the baffle plate 35 also opens. The moving assembly 15 and the conveying assembly 3 both stop working. The pressing cylinder 12 presses down, and the material discharges. The hopper 8 descends and extends into the bag body. The piston 10 squeezes the emulsion explosive inside the temporary storage cylinder 6, thus squeezing the emulsion explosive into the bag body. When the piston 10 is in contact with the inner wall of the feeding funnel 8, the filling is completed. The pressing cylinder 12 lifts up, and the piston 10 moves upward to return to its original position. The feeding funnel 8 also rises and returns to its original position, separating from the bag body. The moving component 15 and the conveying component 3 both start working. After the negative pressure component 16 separates from the limiting inclined block 25, they close together. They also close together through the clamping rod 21. Then, the top is sealed by the sealing component 26.

Claims

1. A forming device for extruded emulsion explosives, comprising an extrusion tube, a filling and forming mechanism, a bag conveying mechanism, and a sealing assembly, wherein the extrusion tube is vertically downward, a sealing slider is provided at the bottom of the extrusion tube, and the filling and forming mechanism is provided on the ground below the extrusion tube, the sealing slider being slidably engaged with the end of the filling and forming mechanism; characterized in that, The filling and forming mechanism consists of multiple filling and forming units arranged side by side, mounted on a conveying assembly for circular conveying. Below the filling and forming units is a bag conveying mechanism, which connects to them. The emulsion explosive within the filling and forming units is filled into the bags conveyed by the bag conveying mechanism. Sealing components are located below the front end and above the rear end of the bag conveying mechanism to seal the top and bottom of the bags. The filling and forming mechanism includes a temporary storage cylinder, a top sliding plate, a feeding funnel, and a flexible lifting assembly. Multiple temporary storage cylinders are arranged vertically side by side. A top sliding plate is fixed to the top of each cylinder, with its top fitting against the bottom of the conveying assembly. The temporary storage cylinder is connected to the bottom of the top sliding plate. A feeding funnel is inserted into each temporary storage cylinder, with a notch at the bottom for the funnel to extend. The edge of the feeding funnel fits against the inner wall of the temporary storage cylinder, and the bottom of the feeding funnel is connected to the temporary storage cylinder. An elastic lifting assembly is installed between the inner walls. Multiple sets of lifting pistons are positioned above the temporary storage cylinders. The pistons descend and extend into the temporary storage cylinders, with their bottoms fitting against the inner wall of the discharge funnel. Annular guide rails are installed at the top of the multiple temporary storage cylinders, and top sliding plates slide along these rails, with the top of the top sliding plates fitting against the bottom of the guide rails. The edges of the top sliding plates of multiple temporary storage cylinders fit together. A conveying assembly is installed on the guide rails and connected to the top sliding plates, thus enabling the top sliding plates to move along the guide rails. Multiple through holes are arranged side-by-side on the guide rails, and sealing sliders are embedded within these holes. Filling of the temporary storage cylinders is achieved through an extrusion tube. A lifting rod is installed on the guide rails, passing through the guide rails. A groove is opened at the bottom of the guide rails for the piston to pass through. The lifting rod is connected to the top of the piston, and a spring is fitted onto the lifting rod. A pressing cylinder is fixed to the top of the lifting rod, pressing it down to lower the lifting rod.

2. The forming device for emulsion explosive extrusion according to claim 1, characterized in that, An unwinding assembly is installed above the front end of the bag conveying mechanism. A rolled bag is mounted on the unwinding assembly. A traction assembly and a cutting assembly are installed between the unwinding assembly and the bag conveying mechanism. The traction assembly includes a conveyor chain and a clamping assembly. A vertical conveyor chain driven by a motor and gears is installed in front of the unwinding assembly. A clamping assembly is installed on the conveyor chain. The clamping assembly consists of multiple sets of clamping arms arranged at equal intervals. Multiple sets of clamping arms are installed on the outer wall of the conveyor chain by hinges. Each set of clamping arms is equipped with a torsion spring to open the clamping arm. Clamping plates are provided on both sides of the conveyor chain to press the clamping arms together. The top of the two clamping plates is a flared opening.

3. The forming device for emulsion explosive extrusion according to claim 2, characterized in that, The bag conveying mechanism includes fixed rods, moving components, and clamping components. The fixed components are positioned so that the bag is pressed against the top two sides. Each set of fixed rods consists of two rods arranged side by side. A moving component is installed on each fixed rod, and a negative pressure component is installed on the moving component. The negative pressure component adsorbs the outer wall of the bag. Clamping components are arranged on both sides of the bag. The clamping components are divided into two groups, which clamp the upper and lower ends of the bag respectively. The bag moves on the clamping components. The upper clamping component is divided into multiple sections, and the negative pressure component is linked to the clamping component at the top. When the negative pressure component opens, the clamping component at the top opens.

4. The forming device for emulsion explosive extrusion according to claim 3, characterized in that, The clamping assembly at the top includes clamping rods and displacement rods. Each fixed rod is equipped with a clamping rod, which is divided into multiple sections. The length of each clamping rod section is the same as the width of the bag. Each clamping rod section is fixed with a displacement rod, which is a multi-faceted rod. Multiple guide holes are opened on the fixed rods for the displacement rods to insert into, and the displacement rods extend and retract within the guide holes. The displacement rods slide when inserted into the fixed rods. A spring is fitted on the displacement rods to close the clamping rods. A groove is opened at the top of the clamping rods, and a linkage plate is fixed at the bottom of the negative pressure assembly, which slides within the groove of the clamping rods. When the negative pressure assembly moves outward, the clamping rods open.

5. The forming apparatus for emulsion explosives after extrusion according to claim 4, characterized in that, The negative pressure component is a negative pressure adsorption head, on which an elastic telescopic rod is installed. A limit rod is fixed at the top of the negative pressure adsorption head, and a limiting inclined block is set above the negative pressure adsorption head. When the negative pressure adsorption head moves, the limit rod moves along the limiting inclined block, so that the negative pressure adsorption head opens the bag and the corresponding clamping component opens at the same time.

6. The forming apparatus for emulsion explosives after extrusion according to claim 5, characterized in that, A baffle plate is installed in the notch at the bottom of the temporary storage cylinder. The top of the baffle plate fits against the bottom of the discharge funnel, thus restricting the descent and unloading of the discharge funnel. The baffle plate slides in conjunction with the bottom of the temporary storage cylinder. The circular baffle plate is divided into two halves, and a spring is installed between the baffle plate and the temporary storage cylinder. The spring enables the baffle plate to close. A downwardly extending protrusion is provided at the bottom of the baffle plate. When the negative pressure suction head opens, the top of the limiting rod abuts against the inside of the protrusion, thus opening the baffle plate. The moving speed of the temporary storage cylinder is the same as the moving speed of the bag.

7. The forming apparatus for emulsion explosives after extrusion according to claim 6, characterized in that, The sealing assembly is a cold-press sealing machine.

Images