Automatic filling and tabletting device and method for pyrotechnic composition

Abstract

The invention relates to the technical field of gunpowder tabletting, and discloses a pyrotechnic composition automatic filling tabletting device and a method thereof.The pyrotechnic composition automatic filling tabletting device comprises an operation table, the operation table is provided with a tabletting assembly, the tabletting assembly comprises a middle shaft, the outer wall of the middle shaft is rotationally connected with a sleeve, and the outer wall of the sleeve is fixedly connected with a pressing disc and a hole disc; a plurality of tablet pressing holes are formed in the hole disc; a feeding assembly is arranged on the operation table and used for filling the tablet pressing holes with gunpowder. And an isolating assembly is arranged on the feeding assembly and used for spraying an isolating agent in the tabletting holes. Through cooperation of the tabletting assembly and the feeding assembly, in the continuous rotation process of the pressing disc and the hole disc, gunpowder in the material box is continuously filled into the multiple tabletting holes, the technical effect of continuous and automatic feeding is achieved, meanwhile, the multiple pressing shafts can sequentially move downwards to conduct tabletting treatment, and therefore the technical effect of automatic and continuous tabletting is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder tabletting, in particular to an automatic filling and tabletting device for pyrotechnic powder and a method thereof. BACKGROUND

[0002] Pyrotechnic powder is the core energy carrier of fireworks and firecrackers, which is mixed by various raw materials. In order to meet the precise requirements of pyrotechnic products on the form and density of the powder, the loose pyrotechnic powder needs to be processed into pyrotechnic powder tablets to make the density of the pyrotechnic powder uniform, ensure the stable burning rate, and at the same time, facilitate transportation and storage, and improve the safety of the products. The existing technology mainly uses an intermittent stamping device to process pyrotechnic powder tablets. The main working principle is to place the pyrotechnic powder in a mold, and then use a stamping device to perform tabletting operation to produce pyrotechnic powder tablets intermittently.

[0003] However, the existing technology has the following problems: When the intermittent stamping device is used to produce pyrotechnic powder tablets, only a few pyrotechnic powder tablets can be tabletted each time, and after completing one operation, the pyrotechnic powder needs to be discharged and fed, and then the tabletting operation is performed again. Since the intermittent tabletting operation needs to be temporarily stopped during feeding and discharging, the working efficiency is limited, and it is difficult to meet the production demand in large quantities. In addition, the feeding and discharging operations need to be continuously performed by manual work, which increases the risk of human contact with the pyrotechnic powder. SUMMARY

[0004] The purpose of the present application is to provide an automatic filling and tabletting device for pyrotechnic powder and a method thereof to overcome the defects of the existing technology and details are described below.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The automatic filling and tabletting device for pyrotechnic powder provided by the present application comprises an operation table, a tabletting assembly is arranged on the operation table, the tabletting assembly comprises a middle shaft, the middle shaft is fixedly installed on the operation table, a sleeve is rotatably connected to the outer wall of the middle shaft, a pressure disc and a hole disc are fixedly connected to the outer wall of the sleeve, the pressure disc is located above the hole disc, a plurality of pressure shafts are slidably connected to the pressure disc, a plurality of tabletting holes are formed in the hole disc, and the plurality of tabletting holes are located below the plurality of pressure shafts, a driving part for driving the sleeve to rotate is arranged on the middle shaft, a contact block is fixedly installed on the middle shaft, the pressure shafts contact the contact block and are pushed downward by the contact block during movement, and the pressure shafts can tablet the pyrotechnic powder in the tabletting holes below them when moving downward; a feeding assembly is arranged on the operation table to fill the tabletting holes with pyrotechnic powder; and an isolation assembly is arranged on the feeding assembly to spray an isolation agent in the tabletting holes.

[0006] Preferably, the driving part comprises a motor fixedly installed on the top of the middle shaft, and a gear fixedly connected to the output end of the motor, and a crown gear ring fixedly installed on the top of the sleeve.

[0007] Preferably, the two ends of the abutting block are provided with inclined surfaces, the top of the pressing shaft is capable of sliding along the inclined surfaces of the abutting block to the bottom surface of the abutting block when moving, and the connection between the pressing shaft and the pressing disc is provided with a spring for driving the pressing shaft to reset upward.

[0008] Preferably, the bottom surface of the hole disc is hingedly connected with a bottom cover, the side of the bottom cover away from the hole disc is fixedly connected with an inclined block, the outer wall of the middle shaft is fixedly connected with an abutting disc, the inclined block is in abutment with the abutting disc when moving and drives the bottom cover to abut against the bottom of the tablet hole, the hinged connection between the bottom cover and the hole disc is provided with a coil spring, the abutting disc is provided with a notch, the inclined block swings downward by the elastic force of the coil spring and gravity when moving to the notch of the abutting disc, and a slide is fixedly installed on the operation table and located below the notch of the abutting disc.

[0009] Preferably, the bottom surface of the abutting block is fixedly connected with a protruding block, the pressing shaft is in contact with the protruding block and is pushed downward by the counterforce of the protruding block when moving, and the pressing shaft is in contact with the protruding block after the movement of the inclined block to the notch of the abutting disc, so that the pressing shaft extrudes the powder tablet in the tablet hole downward, and the pressing shaft is separated from the abutting block after being separated from the protruding block.

[0010] Preferably, the feeding assembly comprises a mounting frame fixedly installed on the operation table, a cartridge fixedly installed on the mounting frame, and a hopper fixedly installed on the cartridge.

[0011] Preferably, the isolation assembly comprises a liquid tank fixedly installed on the outer wall of the cartridge, a liquid pipe and an air pipe fixedly installed on the liquid tank, a fixing cylinder fixedly installed on the outer wall of the cartridge, a sliding shaft slidingly connected to the inner wall of the fixing cylinder, a spherical nozzle fixedly connected to the bottom of the sliding shaft, and flow channels formed in the sliding shaft and the spherical nozzle and communicated with each other, the end of the liquid pipe away from the liquid tank is communicated with the flow channel in the sliding shaft, an air bag is fixedly installed on the outer wall of the cartridge and connected with the end of the air pipe away from the liquid tank, a spring is arranged between the sliding shaft and the fixing cylinder, the spherical nozzle is located on the movement track of the tablet hole, the spherical nozzle is capable of sliding into the tablet hole by the elastic force of the spring when the tablet hole passes below the spherical nozzle, a pressing block is fixedly connected to the outer wall of the sliding shaft and connected with the top of the air bag, a plurality of atomizing nozzles are arranged on the spherical nozzle, and the spherical nozzle sprays the isolation agent in the tablet hole when sliding into the tablet hole.

[0012] As preferred, the feeding assembly further comprises a pushing part, the pushing part comprises a slope block, the slope block is fixedly installed in the box, a push block is slidably connected between the bottom of the slope block and the inner wall of the bottom of the box, a spring is arranged between the push block and the inner wall of the box, a connecting rod is fixedly installed on the push block, a rotating connecting rod is rotatably connected through the box, one end of the rotating connecting rod is connected with the push block through a sliding hinge, the other end of the rotating connecting rod is fixedly connected with a ball head, the outer wall of the pressure plate is fixedly connected with a wave ring, the ball head is in sliding contact with the wave ring, when the wave ring rotates, the ball head can drive the rotating connecting rod to reciprocating swing, when the rotating connecting rod reciprocating swings, the push block is driven to reciprocate by the connecting rod, two sawtooth rods are fixedly connected on the push block, a vibrating rod is fixedly installed in the box, two vibrating forks are fixedly installed on the vibrating rod, when the sawtooth rods move, the sawtooth rods contact with the vibrating rod and drive the vibrating rod to vibrate.

[0013] As preferred, the feeding assembly further comprises a de-caking part, the de-caking part comprises two horizontal rods, the two horizontal rods are fixedly connected to the inner wall of the hopper, a group of first steel sheets are fixedly connected to the horizontal rods, two rotating shafts are rotatably installed on the inner wall of the hopper, a group of second steel sheets are fixedly connected to the rotating shafts, the two rotating shafts are located between the two groups of first steel sheets, first connecting rods are fixedly connected to the rotating shafts, a slide rod is vertically and slidably connected to the inner wall of the box, a second connecting rod is hingedly connected to the bottom of the slide rod, the end of the second connecting rod away from the slide rod is hingedly connected with the connecting rod, the ends of the two first connecting rods away from the rotating shafts are hingedly connected with the slide rod, when the slide rod moves up and down, the two rotating shafts are driven to reciprocating rotate by the two first connecting rods.

[0014] A method for automatic filling and tabletting of pyrotechnic composition, comprising the following steps: Step one: raw material feeding, weighing the raw materials, and feeding the raw materials into the mixing machine by weight loss method; Step two: raw material mixing, mixing the raw materials by the mixing machine to ensure that the uniformity of the raw materials meets the requirements; Step three: raw material pressing, pressing the raw materials into slabs by the roller press; Step four: granulation, crushing the slabs into granules by the granulator; Step five: adding processing aids, adding processing aids in the granules in proportion, and then mixing uniformly by the mixing machine to obtain the pyrotechnic composition; Step six: tabletting, feeding the pyrotechnic composition into the feeding assembly, and continuously tabletting by the tabletting assembly.

[0015] The beneficial effects are: 1. The device for automatic filling and tabletting of pyrotechnic powder, through the cooperation of the tabletting assembly and the feeding assembly, the powder in the powder box is continuously filled into the plurality of tabletting holes during the continuous rotation of the platen and the hole disc, achieving the technical effect of continuous automatic feeding. At the same time, the plurality of pressing shafts can be sequentially lowered for tabletting processing, thereby achieving the technical effect of automatic and continuous tabletting. After the pyrotechnic tablet is pressed, the bottom cover swings downward, and the pyrotechnic tablet is extruded out of the tabletting hole through the downward movement of the pressing shaft, achieving automatic unloading, thereby achieving the technical effects of automatic feeding, cyclic pyrotechnic tablet pressing, and automatic unloading, realizing automatic and continuous production of pyrotechnic tablets, and improving work efficiency and automation level.

[0016] 2. The device for automatic filling and tabletting of pyrotechnic powder, through the setting of the isolation assembly, the plurality of atomizing nozzles of the spherical nozzle spray isolation agent on the inner wall of the tabletting hole before the tabletting hole is filled with powder. The attachment of the isolation agent on the inner wall of the tabletting hole can form an isolation layer, which separates the outer wall of the pyrotechnic tablet from the inner wall of the tabletting hole, avoids the adhesion of the local outer wall of the pyrotechnic tablet to the inner wall of the tabletting hole after the pyrotechnic tablet is formed, and ensures that the pyrotechnic tablet can completely separate from the tabletting hole, thereby ensuring the smoothness of the inner wall of the tabletting hole and the subsequent tabletting quality.

[0017] 3. The device for automatic filling and tabletting of pyrotechnic powder, through the setting of the pushing part, the pushing block continuously pushes the powder to the discharge port of the powder box through horizontal reciprocating movement, keeps the powder box always filled with powder, avoids the incomplete filling of the powder in the tabletting hole due to partial lack of powder in the powder box during feeding, and thereby affects the tabletting quality; through the setting of the deagglomeration part, when the two groups of second steel sheets move from top to bottom, a shearing force can be applied to the agglomerated powder temporarily left on the two groups of first steel sheets, so that the agglomerated powder is broken and passes through the gap between the two groups of first steel sheets, thereby achieving the technical effect of crushing the agglomerated powder. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the tabletting assembly structure of the present application; Figure 3 is a schematic diagram of the driving part structure of the present application; Figure 4 is a schematic diagram of the sleeve structure of the present application; Figure 5 This is a schematic diagram of the pressure shaft structure of the present invention; Figure 6 This is a schematic diagram of the bottom cover structure of the present invention; Figure 7 This is a schematic diagram of the contact disc structure of the present invention; Figure 8 This is a schematic diagram of the slide structure of the present invention; Figure 9 This is a schematic diagram of the isolation component structure of the present invention; Figure 10 This is a schematic diagram of the spherical nozzle structure of the present invention; Figure 11 This is a schematic diagram of the pusher section structure of the present invention; Figure 12 This is a schematic diagram of the rotating rod structure of the present invention; Figure 13 This is a schematic diagram of the sawtooth rod structure of the present invention; Figure 14 This is a schematic diagram of the de-caking section of the present invention; Figure 15 This is a schematic diagram of the second steel sheet structure of the present invention.

[0020] The annotations in the attached figures are explained as follows: 1. Control panel; 2. Tableting assembly; 21. Central shaft; 22. Sleeve; 23. Pressure plate; 24. Perforated plate; 241. Tableting hole; 25. Pressure shaft; 26. Contact block; 261. Protrusion; 27. Bottom cover; 28. Angled block; 29. ​​Contact plate; 3. Feeding assembly; 31. Mounting frame; 32. Material box; 33. Hopper; 4. Isolation assembly; 41. Liquid tank; 42. Liquid pipe; 43. Fixed cylinder; 44. Sliding shaft; 45. Ball nozzle; 46. Airbag; 47. Air pipe; 48. Pressure block; 5. Drive unit; 51. Motor; 52. Gear; 53. Crown gear ring; 6. Pushing section; 61. Sloping block; 62. Pushing block; 63. Connecting rod; 64. Rotating rod; 65. Ball head; 66. Wave ring; 67. Toothed rod; 68. Vibrating rod; 69. Vibrating fork; 7. De-caking section; 71. Crossbar; 72. First steel plate; 73. Rotating shaft; 74. Second steel plate; 75. First connecting rod; 76. Sliding rod; 77. Second connecting rod; 8. Slide. Detailed Implementation

[0021] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application. Embodiment 1

[0022] The prior art uses an intermittent stamping device to produce gunpowder tablets, and each time only a certain number of gunpowder tablets can be pressed, and after completing one operation, the blanking and feeding operations need to be performed, and then the pressing operation is performed. Since the intermittent pressing operation needs to be temporarily stopped during blanking and feeding, the work efficiency is limited, and it is difficult to meet the production demand of large quantities, and manual continuous blanking and feeding operation is required. In order to solve the above problems, the present embodiment is invented.

[0023] Please refer to Figure 1 - Figure 6 An automatic filling and tabletting device for pyrotechnic compositions, comprising an operation table 1, a tabletting assembly 2 is arranged on the operation table 1, the tabletting assembly 2 comprises a middle shaft 21, the middle shaft 21 is fixedly installed on the operation table 1, a sleeve 22 is rotatably connected to the outer wall of the middle shaft 21, the outer wall of the sleeve 22 is fixedly connected with a pressing disc 23 and a hole disc 24, the pressing disc 23 is located above the hole disc 24, a plurality of pressing shafts 25 are slidably connected through the pressing disc 23, a plurality of tabletting holes 241 are formed in the hole disc 24, and the plurality of tabletting holes 241 are located below the plurality of pressing shafts 25, respectively. A driving part 5 for driving the sleeve 22 to rotate is arranged on the middle shaft 21, a contact block 26 is fixedly installed on the middle shaft 21, the pressing shaft 25 contacts the contact block 26 and is pushed downward by the contact block 26 during movement, and the pressing shaft 25 can press the gunpowder in the tabletting hole 241 below it when it moves downward; the sleeve 22 can rotate on the middle shaft 21, the sleeve 22 drives the pressing disc 23 and the hole disc 24 to rotate when it rotates, the tabletting hole 241 is used to contain gunpowder, the pressing shaft 25 can be inserted into the tabletting hole 241 below it during downward movement, and the plurality of pressing shafts 25 can move downward in turn for tabletting during continuous rotation of the pressing disc 23 and the hole disc 24, thereby realizing the technical effect of automatic and continuous tabletting.

[0024] Further, please refer to Figure 2 - Figure 4 The driving part 5 comprises a motor 51, the motor 51 is fixedly installed on the top of the middle shaft 21, the output end of the motor 51 is fixedly connected with a gear 52, a crown gear ring 53 is fixedly installed on the top of the sleeve 22, the gear 52 is engaged with the crown gear ring 53, the motor 51 drives the gear 52 to rotate after being started, and the sleeve 22 is driven to rotate by the crown gear ring 53 when the gear 52 rotates, so that the sleeve 22 drives the pressing disc 23 and the hole disc 24 to rotate.

[0025] In addition, referring to Figure 5 - Figure 6 The two ends of the abutting block 26 are provided with inclined surfaces, and the top of the pressing shaft 25 can slide along the inclined surfaces of the abutting block 26 to the bottom surface of the abutting block 26 during movement. The connection between the pressing shaft 25 and the pressing plate 23 is provided with a spring (as shown in Figure 5 ) for driving the pressing shaft 25 to reset upward. The area below the abutting block 26 is a pressing tablet area. When the pressing tablet hole 241 and the pressing shaft 25 pass below the abutting block 26, the pressing shaft 25 moves downward to perform pressing tablet processing, forming a powder tablet.

[0026] In addition, referring to Figure 5 - Figure 8 The bottom surface of the hole plate 24 is hingedly connected with a bottom cover 27. The side of the bottom cover 27 away from the hole plate 24 is fixedly connected with an inclined block 28. The outer wall of the middle shaft 21 is fixedly connected with an abutting disc 29. The inclined block 28 abuts against the abutting disc 29 during movement and drives the bottom cover 27 to abut against the bottom of the pressing tablet hole 241. The hinge connection between the bottom cover 27 and the hole plate 24 is provided with a coil spring. The abutting disc 29 is provided with a notch. When the inclined block 28 moves to the notch of the abutting disc 29, it swings downward by the elastic force of the coil spring and the gravity of the bottom cover 27 and the inclined block 28. The operating table 1 is fixedly installed with a slide 8, which is located below the notch of the abutting disc 29. When the inclined block 28 is not located above the slide 8, that is, the inclined block 28 is not located in the notch of the abutting disc 29, the inclined block 28 abuts against the outer wall of the abutting disc 29, so that the inclined block 28 tightly abuts against the bottom of the pressing tablet hole 241. At this time, the bottom cover 27 blocks the outlet at the bottom of the pressing tablet hole 241, so that the powder in the pressing tablet hole 241 cannot fall. During pressing tablet processing, the bottom cover 27, the inner wall of the pressing tablet hole 241, and the downward pressing of the pressing shaft 25 are used to realize pressing tablet processing. When the pressing tablet processing is completed, the inclined block 28 enters the notch of the abutting disc 29, so that the inclined block 28 is separated from the abutting disc 29. The inclined block 28 and the bottom cover 27 swing downward by the elastic force of the spring and their own gravity, so that the bottom cover 27 is separated from the outlet at the bottom of the pressing tablet hole 241. At this time, the powder tablet can fall out of the pressing tablet hole 241.

[0027] It is worth noting that, referring to Figure 6 - Figure 8The bottom surface of the abutting block 26 is fixedly connected with a protrusion 261. The pressing shaft 25 is in contact with the protrusion 261 and is subjected to the reverse thrust of the protrusion 261 to move downward. When the pressing shaft 25 moves to the gap of the abutting disc 29, the pressing shaft 25 is in contact with the protrusion 261, so that the pressing shaft 25 extrudes the powder tablet in the pressing hole 241 downward. After the pressing shaft 25 is separated from the protrusion 261, the pressing shaft 25 is separated from the abutting block 26. After the bottom cover 27 swings downward, the pressing shaft 25 above the bottom cover 27 is in contact with the protrusion 261, so that the pressing shaft 25 moves downward. Since the bottom cover 27 no longer blocks the bottom of the powder tablet at this time, the powder tablet can be extruded out of the pressing hole 241 by the downward movement of the pressing shaft 25, so that part of the powder tablet cannot fall by its own gravity due to the adhesion of the powder tablet to the pressing hole 241. Then, the powder tablet falls onto the slide 8, and the slide 8 is connected with an external collecting device. The powder tablet slides into the collecting device through the slide 8, so that the technical effect of automatic discharging is achieved.

[0028] It is worth noting that Figure 1 、 Figure 2 、 Figure 11 The operating table 1 is provided with a feeding assembly 3 for filling the pressing hole 241 with powder. The feeding assembly 3 comprises a mounting frame 31 fixedly installed on the operating table 1. The mounting frame 31 is fixedly installed with a hopper 32, and the hopper 32 is fixedly installed with a hopper 33. The hopper 32 is in sliding contact with the top surface of the hole disc 24. The pressing hole 241 passes through the hopper 32 and is filled with powder during movement. The powder in the hopper 33 falls into the hopper 32. When the hole disc 24 rotates, the hopper 32 remains in a stationary state. The hopper 32 is provided with a discharge port. When the pressing hole 241 moves below the discharge port, part of the powder in the hopper 32 fills the pressing hole 241 by gravity. When the pressing hole 241 is separated from the hopper 32, the excess powder on the top surface of the pressing hole 241 is scraped off by the edge of the bottom of the hopper 32, so that the powder in the pressing hole 241 just fills the pressing hole 241. Then, the pressing shaft 25 moves downward for tablet pressing. As the powder in the hopper 32 continuously fills the plurality of pressing holes 241, the powder in the hopper 33 also continuously falls into the hopper 32 for replenishment, so that the technical effect of continuous automatic feeding is achieved. Embodiment 2

[0029] On the basis of the above embodiment, during actual tablet pressing operation, the outer wall of the powder tablet may be bonded to the inner wall of the pressing hole 241 after the powder is pressed, which causes the outer wall of the powder tablet to be damaged when the powder tablet is separated from the pressing hole 241. At the same time, the inner wall of the pressing hole 241 is also attached with residual powder, which affects the subsequent tablet pressing quality. To solve the above problems, the embodiment is invented.

[0030] Please refer to Figure 1 、 Figure 9 -Figure 10 The feeding assembly 3 is provided with an isolating assembly 4 for spraying isolating agent in the tablet pressing hole 241. The isolating assembly 4 comprises a liquid tank 41 fixedly installed on the outer wall of the cartridge 32, the liquid tank 41 containing isolating agent, the liquid tank 41 being fixedly provided with a liquid pipe 42 and an air pipe 47, the outer wall of the cartridge 32 being fixedly provided with a fixing cylinder 43, the inner wall of the fixing cylinder 43 being slidably connected with a sliding shaft 44, the bottom of the sliding shaft 44 being fixedly connected with a spherical nozzle 45, the sliding shaft 44 and the spherical nozzle 45 being provided with a flow channel in communication, the end of the liquid pipe 42 away from the liquid tank 41 being in communication with the flow channel in the sliding shaft 44, the outer wall of the cartridge 32 being fixedly provided with an air bag 46, the air bag 46 being connected with the end of the air pipe 47 away from the liquid tank 41, the sliding shaft 44 and the fixing cylinder 43 being provided with a spring, the spherical nozzle 45 being located on the movement track of the tablet pressing hole 241, the spherical nozzle 45 being capable of sliding into the tablet pressing hole 241 by the spring force when passing below the tablet pressing hole 241, the outer wall of the sliding shaft 44 being fixedly connected with a pressing block 48, the pressing block 48 being connected with the top of the air bag 46, the spherical nozzle 45 being provided with a plurality of atomizing nozzles, the spherical nozzle 45 spraying isolating agent in the tablet pressing hole 241 when sliding into the tablet pressing hole 241; the spherical nozzle 45 abutting against the hole disc 24 by the spring force, the spherical nozzle 45 being provided with a spherical surface, the spherical nozzle 45 sliding into and out of the tablet pressing hole 241 along the edge of the tablet pressing hole 241 when passing below the tablet pressing hole 241, thus, the spherical nozzle 45 moving downward and upward to reset when passing below the tablet pressing hole 241, the sliding shaft 44 moving synchronously with the spherical nozzle 45 when moving, the pressing block 48 moving downward with the sliding shaft 44, the air bag 46 being extruded by the pressing block 48, the air bag 46 injecting air into the liquid tank 41 through the air pipe 47 after being extruded, the liquid tank 41 injecting isolating agent into the flow channel in the sliding shaft 44 and the spherical nozzle 45 by the positive pressure, the plurality of atomizing nozzles being in communication with the flow channel, the plurality of atomizing nozzles of the spherical nozzle 45 finally spraying isolating agent on the inner wall of the tablet pressing hole 241, the inner wall of the tablet pressing hole 241 being attached with isolating agent to form an isolating layer, the outer wall of the powder charge being isolated from the inner wall of the tablet pressing hole 241, the powder charge being capable of completely separating from the tablet pressing hole 241 after being formed to ensure the smoothness of the inner wall of the tablet pressing hole 241 and the tablet pressing quality. Embodiment 3

[0031] On the basis of the above embodiment, the powder charge in the cartridge 32 may be partially hollowed and lack of powder when feeding, thus causing the powder in some tablet pressing holes 241 to be not filled, thereby affecting the tablet pressing quality. The present embodiment is invented to solve the above problems.

[0032] Please refer to Figure 2 , Figure 11 - Figure 13, the feeding assembly 3 further comprises a pushing part 6, the pushing part 6 comprises a slope block 61, the slope block 61 is fixedly installed in the box 32, a push block 62 is in horizontal sliding connection between the bottom of the slope block 61 and the inner wall of the bottom of the box 32, a spring is arranged between the push block 62 and the inner wall of the box 32, a connecting rod 63 is fixedly installed on the push block 62, a rotating rod 64 is rotatably connected on the box 32, one end of the rotating rod 64 is connected with the push block 62 through a sliding hinge, the other end of the rotating rod 64 is fixedly connected with a ball head 65, a wave ring 66 is fixedly connected on the outer wall of the pressure plate 23, the ball head 65 is in sliding contact with the wave ring 66, when the wave ring 66 rotates, the rotating rod 64 can be driven to reciprocating swing through the ball head 65, when the rotating rod 64 reciprocating swings, the push block 62 is driven to reciprocate through the connecting rod 63, two sawtooth rods 67 are fixedly connected on the push block 62, a vibrating rod 68 is fixedly installed in the box 32, two vibrating forks 69 are fixedly installed on the vibrating rod 68, when the sawtooth rods 67 move, the vibrating rod 68 is contacted and driven to vibrate; when the pressure plate 23 rotates, the wave ring 66 is driven to rotate, the contact surface between the wave ring 66 and the ball head 65 is an annular wave surface, due to the elastic force of the spring between the box 32 and the push block 62, the push block 62 always maintains the elastic force in the direction away from the hole plate 24, the push block 62 applies force to the rotating rod 64 through the connecting rod 63, so that the ball head 65 on the rotating rod 64 always abuts against the wave ring 66, therefore, when the wave ring 66 rotates, the ball head 65 slides along the annular wave surface of the wave ring 66, thereby realizing the technical effect that the rotating rod 64 reciprocating swings, and when the rotating rod 64 reciprocating swings, the push block 62 is driven to reciprocate horizontally through the connecting rod 63 (as shown in Figure 12 The powder in the hopper 33 falling into the box 32 first falls into the box 32 along the slope block 61, then the push block 62 continuously pushes the powder to the discharge port of the box 32 through horizontal reciprocation, so that the box 32 is always filled with powder, and the powder in the pressing hole 241 is not filled due to local lack of powder in the box 32 during the feeding process, thereby affecting the pressing quality.

[0033] It is worth mentioning that, please refer to Figure 2 、 Figure 13 - Figure 15The feeding assembly 3 further comprises a de-agglomerating part 7, the de-agglomerating part 7 comprises two horizontal rods 71 fixedly connected to the inner wall of the hopper 33, a group of first steel sheets 72 are fixedly connected to the horizontal rods 71, two rotating shafts 73 are rotatably installed on the inner wall of the hopper 33, a group of second steel sheets 74 are fixedly connected to the rotating shafts 73, the two rotating shafts 73 are located between the two groups of first steel sheets 72, a first connecting rod 75 is fixedly connected to the rotating shaft 73, a sliding rod 76 is vertically and slidably connected to the inner wall of the hopper 33, a second connecting rod 77 is hingedly connected to the bottom of the sliding rod 76, the end of the second connecting rod 77 away from the sliding rod 76 is hingedly connected to the connecting rod 63, the ends of the two first connecting rods 75 away from the rotating shaft 73 are hingedly connected to the sliding rod 76, when the sliding rod 76 moves up and down, the two rotating shafts 73 can be driven to rotate back and forth through the two first connecting rods 75; the two groups of first steel sheets 72 are horizontally arranged, the gunpowder falling from the hopper 33 to the hopper 32 needs to pass through the gaps formed by the two groups of first steel sheets 72, the two groups of first steel sheets 72 form a structure similar to a grid, which can intercept the agglomerated gunpowder in the hopper 33 above the two groups of first steel sheets 72, and when the connecting rod 63 moves horizontally, the sliding rod 76 can be driven to move up and down by the second connecting rod 77, so that the two rotating shafts 73 drive the two groups of second steel sheets 74 to swing back and forth, and in the movement process of a group of second steel sheets 74, the group of second steel sheets 74 can pass through the gap between a group of first steel sheets 72 from top to bottom, so that when the two groups of second steel sheets 74 move from top to bottom, a shearing force can be applied to the agglomerated gunpowder temporarily retained on the two groups of first steel sheets 72, so that the agglomerated gunpowder is broken and then passes through the gap between the two groups of first steel sheets 72, thereby achieving the technical effect of crushing the agglomerated gunpowder, and avoiding the situation that the agglomerated gunpowder enters the hopper 32 and the tablet pressing hole 241 and causes blockage. Embodiment 4

[0034] An automatic filling and tablet pressing method for gunpowder, which adopts the automatic filling and tablet pressing device for gunpowder in the above embodiment, further comprises the following steps: Step one: raw material feeding, the raw materials are weighed and added to the mixing machine by the weight loss method; Step two: raw material mixing, the raw materials are mixed by the mixing machine to ensure that the uniformity of the raw materials meets the requirements; Step three: raw material pressing, the raw materials are pressed into slabs by the roller press; Step four: granulation, the slabs are crushed into particles by the granulator; Step five: processing aid addition, processing aids are added to the particles in proportion, and then mixed evenly by the mixing machine to obtain gunpowder; Step six: tablet pressing, the gunpowder is fed into the feeding assembly 3, and continuous tablet pressing treatment is performed by the tablet pressing assembly 2.

[0035] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A device for automatic filling and tabletting of pyrotechnic compositions, comprising an operating table (1), characterized in that: a tabletting assembly (2) is arranged on the operating table (1), the tabletting assembly (2) comprises a middle shaft (21) fixedly installed on the operating table (1), the outer wall of the middle shaft (21) is rotationally connected with a sleeve (22), the outer wall of the sleeve (22) is fixedly connected with a pressure disc (23) and a hole disc (24), the pressure disc (23) is located above the hole disc (24), a plurality of pressure shafts (25) are slidingly connected through the pressure disc (23), a plurality of tabletting holes (241) are formed in the hole disc (24), and the plurality of tabletting holes (241) are respectively located below the plurality of pressure shafts (25); a driving part (5) for driving the sleeve (22) to rotate is arranged on the middle shaft (21), a contact block (26) is fixedly installed on the middle shaft (21), the pressure shaft (25) is in contact with the contact block (26) during movement and is pushed downward by the contact block (26), and the pressure shaft (25) can perform tabletting treatment on the pyrotechnic composition in the tabletting hole (241) below the pressure shaft (25) when the pressure shaft (25) moves downward; a feeding assembly (3) is arranged on the operating table (1) and used for filling the pyrotechnic composition into the tabletting hole (241); an isolation assembly (4) is arranged on the feeding assembly (3) and used for spraying an isolation agent in the tabletting hole (241). The driving part (5) comprises a motor (51) fixedly installed at the top of the middle shaft (21), the output end of the motor (51) is fixedly connected with a gear (52), and the top of the sleeve (22) is fixedly installed with a crown gear ring (53), the gear (52) is engaged with the crown gear ring (53).

2. The device according to claim 1, characterized in that: The two ends of the contact block (26) are provided with inclined surfaces, the top of the pressure shaft (25) can slide along the inclined surface of the contact block (26) to the bottom surface of the contact block (26) during movement, and the connection position of the pressure shaft (25) and the pressure disc (23) is provided with a spring for driving the pressure shaft (25) to reset upward.

3. The device according to claim 1, characterized in that: The bottom surface of the hole disc (24) is hingedly connected with a bottom cover (27), one side of the bottom cover (27) away from the hole disc (24) is fixedly connected with an inclined block (28), the outer wall of the middle shaft (21) is fixedly connected with a contact disc (29), the inclined block (28) is in contact with the contact disc (29) during movement and drives the bottom cover (27) to abut against the bottom of the tabletting hole (241), a coil spring is arranged at the hinged position of the bottom cover (27) and the hole disc (24), a notch is arranged on the contact disc (29), the inclined block (28) swings downward by the elastic force of the coil spring and gravity when the inclined block (28) moves to the notch of the contact disc (29), and a slide (8) is fixedly installed on the operating table (1) and located below the notch of the contact disc (29).

4. The device according to claim 3, wherein: ​ 5. The device according to claim 4, characterized in that: The abutting block (26) is fixedly connected with a convex block (261) in the bottom surface, the pressing shaft (25) is in contact with the convex block (261) and is pushed downward by the convex block (261) when the pressing shaft (25) moves, the pressing shaft (25) is in contact with the convex block (261) after the inclined block (28) moves to the notch of the abutting disc (29), so that the pressing shaft (25) extrudes the powder disc in the pressing disc hole (241) downward, and the pressing shaft (25) is separated from the convex block (261) after being separated from the abutting block (26).

6. The device according to claim 1, wherein: The feeding assembly (3) comprises a mounting frame (31) fixedly installed on the operation table (1), a material box (32) fixedly installed on the mounting frame (31), and a hopper (33) fixedly installed on the material box (32), wherein the material box (32) is in sliding contact with the top surface of the hole disc (24), and the pressing disc hole (241) passes through the material box (32) during movement and is filled with powder.

7. The device according to claim 6, characterized in that: The isolation assembly (4) comprises a liquid tank (41) fixedly installed on the outer wall of the material box (32), a liquid pipe (42) and an air pipe (47) fixedly installed on the liquid tank (41), a fixed cylinder (43) fixedly installed on the outer wall of the material box (32), a sliding shaft (44) slidably connected to the inner wall of the fixed cylinder (43), a spherical nozzle (45) fixedly connected to the bottom of the sliding shaft (44), a flow channel communicated between the sliding shaft (44) and the spherical nozzle (45), one end of the liquid pipe (42) away from the liquid tank (41) in communication with the flow channel in the sliding shaft (44), an air bag (46) fixedly installed on the outer wall of the material box (32), the air bag (46) connected with one end of the air pipe (47) away from the liquid tank (41), a spring arranged between the sliding shaft (44) and the fixed cylinder (43), the spherical nozzle (45) located on the movement track of the pressing disc hole (241), the spherical nozzle (45) capable of sliding into the pressing disc hole (241) by the spring force when the pressing disc hole (241) passes below the spherical nozzle (45), a pressing block (48) fixedly connected to the outer wall of the sliding shaft (44), the pressing block (48) connected with the top of the air bag (46), a plurality of atomizing nozzles arranged on the spherical nozzle (45), and the spherical nozzle (45) sprays the isolation agent in the pressing disc hole (241) when the spherical nozzle (45) slides into the pressing disc hole (241).

8. The device according to claim 7, characterized in that: The feeding assembly (3) further includes a pushing part (6), the pushing part (6) includes a slope block (61), the slope block (61) is fixedly installed in the box (32), the bottom of the slope block (61) and the inner wall of the bottom of the box (32) are horizontally and slidably connected with a push block (62), a spring is arranged between the push block (62) and the inner wall of the box (32), the push block (62) is fixedly installed with a connecting rod (63), the box (32) is rotatably connected with a rotating rod (64) penetrating through, one end of the rotating rod (64) is connected with the push block (62) through a sliding hinge, the other end of the rotating rod (64) is fixedly connected with a ball head (65), the outer wall of the pressure plate (23) is fixedly connected with a wave ring (66), the ball head (65) is in sliding contact with the wave ring (66), when the wave ring (66) rotates, the ball head (65) can drive the rotating rod (64) to reciprocating swing, when the rotating rod (64) reciprocating swings, the push block (62) is driven to reciprocate by the connecting rod (63), the push block (62) is fixedly connected with two sawtooth rods (67), the box (32) is fixedly installed with a vibrating rod (68), the vibrating rod (68) is fixedly installed with two vibrating forks (69), when the sawtooth rods (67) move, the sawtooth rods (67) contact with the vibrating rod (68) and drive the vibrating rod (68) to vibrate.

9. The device according to claim 8, characterized in that: The feeding assembly (3) further includes a de-agglomeration part (7), the de-agglomeration part (7) includes two cross rods (71), both of the cross rods (71) are fixedly connected to the inner wall of the hopper (33), the cross rod (71) is fixedly connected with a group of first steel sheets (72), the inner wall of the hopper (33) is rotatably installed with two rotating shafts (73), the rotating shaft (73) is fixedly connected with a group of second steel sheets (74), both of the rotating shafts (73) are located between the two groups of first steel sheets (72), the rotating shaft (73) is fixedly connected with a first connecting rod (75), the inner wall of the box (32) is vertically and slidably connected with a sliding rod (76), the bottom of the sliding rod (76) is hingedly connected with a second connecting rod (77), the end of the second connecting rod (77) away from the sliding rod (76) is hingedly connected with the connecting rod (63), the ends of both of the first connecting rods (75) away from the rotating shaft (73) are hingedly connected with the sliding rod (76), when the sliding rod (76) moves up and down, the two rotating shafts (73) are driven to reciprocating rotate by the two first connecting rods (75).

10. A method for automatic filling and tabletting of pyrotechnic compositions, characterized in that: The device for automatic filling and tabletting of pyrotechnic compositions according to any one of claims 1-9 further comprises the following steps: Step one: raw material feeding, the raw materials are weighed and fed into the mixing machine by the weight loss method; Step two: raw material mixing, the raw materials are mixed by the mixing machine to ensure that the uniformity of the raw materials meets the requirements; Step three: raw material pressing, the raw materials are pressed into slabs by the roller press; Step four: granulation, the slabs are crushed into granules by the granulator; Step five: adding processing aids, processing aids are added to the granules in proportion, and then mixed evenly by the mixing machine to obtain the pyrotechnic composition. Step six: tabletting, the gunpowder is put into the feeding assembly (3) and is continuously tabletted by the tabletting assembly (2). Step six: tabletting, the gunpowder is put into the feeding assembly (3) and is continuously tabletted by the tabletting assembly (2). Step six: tabletting, the gun

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