Automatic preparation device for high-viscosity DNAN-based casting explosive block

Abstract

The invention discloses an automatic preparation device for a high-viscosity DNAN-based casting explosive block. The automatic preparation device comprises a rack, an explosive block conveying mechanism and a pneumatic slitting mechanism, and a rotary table mechanism is arranged below the explosive block conveying mechanism; the medicine block conveying mechanism comprises a movable bracket driven by a power mechanism to walk in the length direction of the rack, a tray used for containing medicine blocks is arranged on the surface of the movable bracket, and the tray and the movable bracket can be freely separated up and down. The pneumatic slitting mechanism comprises an air cylinder base located above the medicine block conveying mechanism and a downward pressing air cylinder arranged on the surface of the air cylinder base, the bottom of an air cylinder rod of the downward pressing air cylinder penetrates through the air cylinder base to be connected with a pressing plate, and a slitting assembly used for pressing and cutting medicine blocks is arranged at the bottom of the pressing plate. The rotary table mechanism comprises a rotary table base, and a lifting air cylinder is arranged at the bottom of the rotary table base. The device is simple in structure, the adopted preparation technology is economical and practical, and the safety and health problems caused by direct contact and beating of a medicine plate by personnel in the weapon industry high-quality medicine block preparation process can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of warhead charges, and in particular to an automated preparation device for high-viscosity DNAN-based melt-casting blocks, which is applied to the Dongfeng series. Background Art

[0002] In order to improve the quality of large-yield warhead molten-cast charge, shorten the charging cycle and improve the charging efficiency, block casting is widely used in large-yield warhead molten-cast charge at home and abroad. The factory's various types of large-yield warhead molten-cast charge all adopt block casting.

[0003] As one of the necessary raw materials for the melt-cast charge of large-yield warheads, the powder block serves as a crystal nucleus, absorbing part of the heat of the liquid explosive, playing a role in the simultaneous solidification of various parts, avoiding the occurrence of concentrated shrinkage cavities and coarse crystallization, and shortening the solidification time. Secondly, the warhead charge has the advantages of a short production cycle, simple operation, and the quality of the charge is less affected by natural and human factors. It is a commonly used charging method in the weapons industry for large-yield warheads. However, the current common preparation process for powder blocks in the industry is to prepare the slurry into powder plates, and manually use a wooden hammer to beat the plates into small pieces. This preparation method has safety hazards due to direct contact and beating of the plates by personnel. Once an accident occurs, it will inevitably cause casualties. At the same time, due to direct contact of personnel with the plates, the explosive dust generated during the beating process poses an occupational hazard. Summary of the Invention

[0004] In order to solve the above-mentioned technical defects, the purpose of the present invention is to provide an automated preparation device for high-viscosity DNAN-based molten medicine blocks. The device has a simple structure and adopts economical and practical preparation technology, which can effectively avoid the safety and health problems caused by direct contact and knocking of medicine plates by personnel during the preparation of high-quality medicine blocks in the weapons industry.

[0005] To achieve the above objectives, the present invention employs a technical solution comprising: an automated apparatus for preparing highly viscous DNAN-based melt-cast medicine blocks, comprising a frame, a medicine block conveying mechanism, and a pneumatic slitting mechanism, wherein a turntable mechanism is disposed below the medicine block conveying mechanism; the medicine block conveying mechanism comprises a movable bracket driven by a power mechanism along the length of the frame, a tray for placing the medicine blocks disposed on the surface of the movable bracket, and the tray and the movable bracket can be freely separated in an upward and downward direction; The pneumatic cutting mechanism includes a cylinder base located above the medicine block conveying mechanism and a downward pressure cylinder provided on the surface of the cylinder base. The bottom of the cylinder rod of the downward pressure cylinder passes through the cylinder base and is connected to a pressure plate. The bottom of the pressure plate is provided with a cutting assembly for pressing and cutting the medicine block. The turntable mechanism includes a turntable base, a lifting cylinder is provided at the bottom of the turntable base, a lifting platform is provided above the turntable base, and the telescopic end of the lifting cylinder passes through the lifting platform and is connected to the rotating table.

[0006] Furthermore, the power mechanism includes a synchronous linear module and a slide rail respectively arranged on both sides of the frame, the movable bracket is fixed on the synchronous linear module and the slide rail, and the movable bracket moves along the length direction of the slide rail under the drive of the synchronous linear module.

[0007] The pneumatic slitting mechanism also includes a press base and four guide columns arranged on the surface of the press base, which pass through the pressure plate and are movably connected to the bottom of the cylinder base; the slitting assembly includes a cutter support plate fixed to the bottom of the pressure plate and a slitting knife embedded in and fixed to the bottom of the cutter support plate, and elastic pressure strip assemblies are respectively provided on both sides of the slitting knife. When cutting the medicine block, the elastic pressure strip assembly pre-presses the medicine block, and then the slitting knife cuts the medicine block.

[0008] The cutter support plate is also movably connected to a plurality of connecting columns on both sides of the slitting knife. One end of the connecting column can freely extend into the cutter support plate, and the other end is connected to a pressure strip. The outer wall of the connecting column is sleeved with a compression spring.

[0009] The cutter support plate is made of aluminum alloy, and the slitting knife is made of stainless steel. There are multiple screw holes on the back of the slitting knife, and the back of the slitting knife is embedded in the cutter support plate. A screw is provided on the top of the pressure plate, and the screw passes through the cutter support plate and is connected with the screw holes on the back of the slitting knife.

[0010] A limit sleeve is provided on the top of the cylinder rod of the downward pressing cylinder, and the limit sleeve limits the downward pressing stroke of the downward pressing cylinder.

[0011] Four guide columns are provided at the bottom of the lifting platform, which pass through the turntable base and are movably connected to the turntable base; the rotation of the turntable is achieved by a servo motor provided inside the turntable.

[0012] When the present invention is working, the pneumatic slitting mechanism adopts a double-rod cylinder as the slitting power, and the downward pressure stroke of the cylinder is adjusted by the limit bushing. The telescopic end of the cylinder is connected to the pressure plate, and the slitting knife and the pressure strip are installed under the pressure plate. The pressure plate drives the slitting knife and the pressure strip downward under the action of the double-rod cylinder. The pressure strip first contacts the medicine plate and compacts it. At this time, the compression spring is compressed, and one end of the connecting column extends into the interior of the cutter support plate and continues to descend. The slitting knife cuts the medicine plate into medicine strips first, and then returns to the bottom of the slitting knife after rotating 90 degrees on the rotating table, and presses down again to cut the medicine strips into medicine blocks of different specifications.

[0013] The cutter support plate is made of aluminum alloy to facilitate operators to change specifications; the slitting knife is made of stainless steel and is movable, so worn cutters can be replaced, which can effectively save cutter costs; elastic pressure strips are installed on both sides of the slitting knife, and the pressure strips are pre-pressed before the slitting knife cuts to reduce the possibility of medicine blocks flying during slitting; the turntable mechanism consists of a lifting cylinder, an explosion-proof servo motor and a rotating table to realize the automatic rotation of the aluminum tray containing the medicine plate.

[0014] The medicine block conveying mechanism consists of a mobile bracket and a power mechanism. The mobile bracket is step-dragged by a synchronous linear module, so that the mobile bracket is powered and supported along the slide rail. The bottom of the mobile bracket is connected to the slide rail slider, and a tray is placed on the upper layer. When it moves to the turntable mechanism position, the tray can be freely converted 90 degrees by lifting and rotating.

[0015] The beneficial effects of the present invention are as follows: the concept is ingenious and the design is reasonable. The medicine block is successfully cut into medicine blocks of different specifications by conveying, pressing down, rotating and pressing down again. The elastic layering technology is adopted in combination with the solidified state of the medicine plate, which eliminates the hidden dangers of breakage or cracking in the preparation process of the medicine block. The operation is simple, easy to use and low in cost, which can reduce the use cost and the maintenance manpower. The medicine block preparation capacity reaches 100 kg / h (cutting time, excluding auxiliary time) and the medicine block preparation efficiency is above 92% (calculated for medicine blocks larger than 5 mm). BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the pneumatic slitting mechanism in the present invention.

[0018] Figure 3 It is a structural schematic diagram of the cutting component in the present invention.

[0019] Figure 4 It is a structural schematic diagram of the transfer table mechanism of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the Chinese medicine block conveying mechanism of the present invention.

[0021] Attachment Figure 1-5 Among them, 1. Turntable mechanism; 2. Pneumatic slitting mechanism; 3. Medicine block conveying mechanism; 4. Frame; 5. Slide rail; 6. Mobile bracket; 7. Pallet; 8. Synchronous linear module; 10. Cylinder rod; 11. Press cylinder; 12. Limit sleeve; 13. Cylinder base; 14. Guide column; 15. Press base; 16. Press plate; 17. Slitting assembly; 18. Cutter support plate; 19. Slitting knife; 20. Compression spring; 21. Connecting column; 22. Pressing strip; 23. Turntable base; 24. Lifting cylinder; 25. Rotating table; 26. Lifting table; 27. Servo motor. DETAILED DESCRIPTION

[0022] See attached Figure 1-5 This is an embodiment of the present invention, which discloses an automated preparation device for high-viscosity DNAN-based molten-cast medicine blocks, including a frame 4, a medicine block conveying mechanism 3 and a pneumatic cutting mechanism 2, and a turntable mechanism 1 is provided below the medicine block conveying mechanism 3.

[0023] The medicine block conveying mechanism 3 includes a mobile bracket 6 driven by a power mechanism to move along the length direction of the frame 4. A tray 7 for placing the medicine blocks is provided on the surface of the mobile bracket 6, and the tray 7 and the mobile bracket 6 can be freely separated up and down; the power mechanism includes a synchronous linear module 8 and a slide rail 5 respectively arranged on both sides of the frame 4. The mobile bracket 6 is fixed on the synchronous linear module 8 and the slide rail 5. The mobile bracket 6 moves along the length direction of the slide rail 5 under the drive of the synchronous linear module 8.

[0024] The medicine block conveying mechanism 3 consists of a mobile bracket 6 and a power mechanism. The mobile bracket 6 is step-dragged by a synchronous linear module 8, so that the mobile bracket 6 is powered and supported along the slide rail 5; the bottom of the mobile bracket 6 is connected to the slider of the slide rail 5, and a tray 7 is placed on the upper layer. When it moves to the position of the turntable mechanism 1, the tray 7 is freely converted 90 degrees by lifting and rotating.

[0025] The pneumatic cutting mechanism 2 includes a cylinder base 13 located above the medicine block conveying mechanism 3 and a downward-pressing cylinder 11 arranged on the surface of the cylinder base 13. The bottom of the cylinder rod 10 of the downward-pressing cylinder 11 passes through the cylinder base 13 and is connected to a pressure plate 16. The bottom of the pressure plate 16 is provided with a cutting component 17 for pressing and cutting the medicine block; the top of the cylinder rod 10 of the downward-pressing cylinder 11 is provided with a limit sleeve 12, and the limit sleeve 12 limits the downward stroke of the downward-pressing cylinder 11.

[0026] The pneumatic slitting mechanism 2 also includes a press base 15 and four guide columns 14 provided on the surface of the press base 15. The guide columns 14 pass through the pressure plate 16 and are movably connected to the bottom of the cylinder base 13; the slitting assembly 17 includes a cutter support plate 18 fixed to the bottom of the pressure plate 16 and a slitting knife 19 embedded and fixed to the bottom of the cutter support plate 18. Elastic pressure strips 22 components are respectively provided on both sides of the slitting knife 19. When cutting the medicine block, the elastic pressure strip 22 component pre-presses the medicine block, and then the slitting knife 19 cuts the medicine block.

[0027] The cutter support plate 18 is also movably connected to a plurality of connecting columns 21 on both sides of the slitting knife 19. One end of the connecting column 21 can freely extend into the cutter support plate 18, and the other end is connected to a pressure strip 22. The outer wall of the connecting column 21 is sleeved with a compression spring 20; the connecting column 21 is provided with a stop head at the end that freely extends into the cutter support plate 18, and a stop sleeve is provided at the bottom of the cutter support plate 18. The stop sleeve meets the requirement that the stop head is blocked by the stop sleeve when the connecting column 21 falls.

[0028] The cutter support plate 18 is made of aluminum alloy, and the slitting knife 19 is made of stainless steel. A plurality of screw holes are provided on the back of the slitting knife 19, and the back of the slitting knife 19 is embedded in the cutter support plate 18. A screw is provided on the top of the pressure plate 16, and the screw passes through the cutter support plate 18 and is connected with the screw holes on the back of the slitting knife 19.

[0029] The cutter support plate 18 is made of aluminum alloy to facilitate operators to change specifications; the slitting knife 19 is made of stainless steel and is movable, so the worn cutter can be replaced, which can effectively save the cutter cost; elastic pressure strips 22 are installed on both sides of the slitting knife 19, and the pressure strips 22 are pre-pressed before the slitting knife 19 cuts, reducing the possibility of the medicine blocks flying during cutting.

[0030] The turntable mechanism 1 includes a turntable base 23, a lifting cylinder 24 is provided at the bottom of the turntable base 23, a lifting platform 26 is provided above the turntable base 23, and the telescopic end of the lifting cylinder 24 passes through the lifting platform 26 and is connected to the rotating platform 25; four guide columns 14 are provided at the bottom of the lifting platform 26, and the guide columns 14 pass through the turntable base 23 and are movably connected to the turntable base 23; the interior of the rotating platform 25 is rotated by a servo motor 27, and finally realizes the automatic rotation of the aluminum tray containing the medicine plate.

[0031] When the present invention is working, the pneumatic slitting mechanism 2 adopts a double-rod cylinder as the slitting power, and the downward stroke of the cylinder is adjusted by the limit bushing. The telescopic end of the cylinder is connected to the pressure plate 16, and the slitting knife 19 and the pressure strip 22 are installed under the pressure plate 16. The pressure plate 16 drives the slitting knife 19 and the pressure strip 22 downward under the action of the double-rod cylinder. The pressure strip 22 first contacts the medicine plate and compacts it. At this time, the compression spring 20 is compressed, and one end of the connecting column 21 extends into the inside of the cutter support plate 18 and continues to descend. The slitting knife 19 cuts the medicine plate into medicine strips first, and then returns to the bottom of the slitting knife 19 after rotating 90° on the rotating table 25, and presses down again to cut the medicine strips into medicine blocks of different specifications.

[0032] The present invention is implemented through the following steps during operation: 1) Preparation before the experiment: The operator cleans the aluminum plate to ensure that the surface is free of impurities, residual inert matter, etc.; and prepares the drug slurry and the pharmaceutical plate according to the process requirements.

[0033] 2) Device status detection: Static detection, check whether the power cord connection of the device is normal, whether the connection between the device and the workshop power supply is reasonable and effective; check whether the gas source pipeline is laid reasonably and whether the gas source is sufficient; check whether the electrostatic grounding of the device meets the requirements; dynamic detection, check whether the device is operating normally and whether the pressure gauge value is accurate.

[0034] 3) Automatic medicine block preparation: After manually opening the explosion-proof door locking device, press the explosion-proof door opening button, and the pneumatic power assist device will assist in manually opening the explosion-proof door; manually place the aluminum plate of the medicine plate on the movable bracket 6 of the medicine plate / medicine block conveying mechanism 3 for positioning, and personnel evacuate the explosion-proof room; activate the explosion-proof door closing button, and the pneumatic power assist device will assist in manually closing and locking the explosion-proof door; the operator starts the equipment outdoors; the movable bracket 6 moves on the slide rail 5 to deliver the aluminum plate of the medicine plate to the pneumatic cutting mechanism 2 station; locate the position of the first medicine strip (about 30mm from the outer edge of the medicine plate), and the elastic pressure strip 22 first contacts the medicine plate under the action of elastic force to compact the medicine plate under the action of elastic force (the elastic pressure can be adjusted appropriately according to the preparation of the medicine block); the cutting knife 19 cuts the medicine plate into medicine strips; the medicine block conveying mechanism 3 steps forward 20mm (the specific parameters can be set in the system according to the process requirements); repeat the above actions, The cross-cutting of the entire plate of medicine plates is completed, so that the medicine plates in the plate become strips; the mobile bracket 6 drives the explosive tray 7 to move quickly to the rotary table 25, and the cylinder at the bottom of the rotary table 25 rises to lift the tray 7 on the mobile bracket 6 together with the aluminum plate and rotate it 90°, so that the explosive strips in the aluminum plate are changed from a horizontal state to a longitudinal state; the lifting cylinder descends, and the tray 7 together with the aluminum plate falls back onto the mobile bracket 6; the mobile bracket 6 drives the tray 7 and the aluminum plate to move quickly to the bottom of the pneumatic cutting mechanism 2 for the second cutting, and the cutting process is the same as the first time, until the medicine strips are formed into blocks required by the process. At the same time, the mobile bracket 6 returns to the initial position of loading and unloading driven by the conveying mechanism, and the system prompts that the preparation of the medicine block is completed and stops; after manually opening the explosion-proof door locking device, press the explosion-proof door opening button, and the pneumatic power assist device is activated to assist the manual opening of the explosion-proof door; the operator enters the explosion-proof room, takes out the aluminum plate, and checks the cutting of the medicine block.

[0035] The specific technical requirements are as follows: a) Control the number of tool cuttings according to the process parameters. When the width of the medicine block is 20 mm, the number of cuttings is 25 times; when the width of the medicine block is 30 mm, the number of cuttings is 17 times.

[0036] b) The surfaces of tools and fixtures shall be free of sharp edges, corners, burrs and other defects and shall be kept in good condition c) All personnel entering the workshop must wear the prescribed labor protection gear during the process. It is strictly prohibited to wear chemical fiber, silk, woolen and other clothing and shoes with iron nails.

[0037] d) Control the number of posts and workshop staffing according to process requirements, and no unrelated personnel are allowed to enter the workplace.

[0038] e) The entire process of drug block preparation should be closely monitored. If an emergency occurs (such as the positioning of the aluminum plate shifts during operation or the cutter interferes with the aluminum plate), the machine should be stopped immediately.

[0039] f) Ensure that there is a gap of 1mm to 5mm between the cutting tool and the surface of the aluminum plate.

Claims

1. An automated preparation device for highly viscous DNAN-based melt-cast drug blocks, characterized by: The machine comprises a frame, a medicine block conveying mechanism and a pneumatic cutting mechanism. A turntable mechanism is provided below the medicine block conveying mechanism. The medicine block conveying mechanism comprises a movable bracket driven by a power mechanism to move along the length direction of the frame. A tray for placing medicine blocks is provided on the surface of the movable bracket. The tray and the movable bracket can be freely separated up and down. The pneumatic cutting mechanism includes a cylinder base located above the medicine block conveying mechanism and a downward pressure cylinder provided on the surface of the cylinder base. The bottom of the cylinder rod of the downward pressure cylinder passes through the cylinder base and is connected to a pressure plate. The bottom of the pressure plate is provided with a cutting assembly for pressing and cutting the medicine block. The turntable mechanism includes a turntable base, a lifting cylinder is provided at the bottom of the turntable base, a lifting platform is provided above the turntable base, and the telescopic end of the lifting cylinder passes through the lifting platform and is connected to the rotating table.

2. The automated preparation device for highly viscous DNAN-based melt-cast drug blocks according to claim 1, characterized in that: The power mechanism includes a synchronous linear module and a slide rail respectively arranged on both sides of the frame. The movable bracket is fixed on the synchronous linear module and the slide rail. The movable bracket moves along the length direction of the slide rail under the drive of the synchronous linear module.

3. The automated preparation device for the highly viscous DNAN-based melt-cast drug block according to claim 1, characterized in that: The pneumatic slitting mechanism also includes a press base and four guide columns arranged on the surface of the press base, which pass through the pressure plate and are movably connected to the bottom of the cylinder base; the slitting assembly includes a cutter support plate fixed to the bottom of the pressure plate and a slitting knife embedded in and fixed to the bottom of the cutter support plate, and elastic pressure strip assemblies are respectively provided on both sides of the slitting knife. When cutting the medicine block, the elastic pressure strip assembly pre-presses the medicine block, and then the slitting knife cuts the medicine block.

4. The automated preparation device for the highly viscous DNAN-based melt-cast drug block according to claim 3, characterized in that: The cutter support plate is also movably connected to a plurality of connecting columns on both sides of the slitting knife. One end of the connecting column can freely extend into the cutter support plate, and the other end is connected to a pressure strip. The outer wall of the connecting column is sleeved with a compression spring.

5. The automated preparation device for the highly viscous DNAN-based melt-cast drug block according to claim 3, characterized in that: The cutter support plate is made of aluminum alloy, and the slitting knife is made of stainless steel. There are multiple screw holes on the back of the slitting knife, and the back of the slitting knife is embedded in the cutter support plate. A screw is provided on the top of the pressure plate, and the screw passes through the cutter support plate and is connected with the screw holes on the back of the slitting knife.

6. The automated preparation device for highly viscous DNAN-based melt-cast medicine blocks according to claim 1, characterized in that: A limit sleeve is provided on the top of the cylinder rod of the downward pressing cylinder, and the limit sleeve limits the downward pressing stroke of the downward pressing cylinder.

7. The automated preparation device for highly viscous DNAN-based melt-cast drug blocks according to claim 1, characterized in that: Four guide columns are provided at the bottom of the lifting platform, which pass through the turntable base and are movably connected to the turntable base; the rotation of the turntable is achieved by a servo motor provided inside the turntable.

Images