Propellant grain continuous and automatic processing technology

Abstract

The invention discloses a continuous and automatic propellant grain processing technology which specifically comprises the following steps: integrating ten workshops, namely a feeding room, an explosive turning room, a detection room, a flaw detection room, an inner hole coating room, an inner coating and curing room, an end surface coating room, an airing room, a trimming room and a boxing room on a production line; a series of procedures of feeding, turning, selecting, flaw detection, inner hole coating, inner coating curing, end packaging, medicine airing, trimming and grain temporary storage are continuously completed. According to the propellant grain processing technology, continuous operation of grain turning, selecting, flaw detection, inner hole coating, line fixing, end packaging, grain airing, trimming and boxing can be achieved, the production efficiency is improved, the consistency of formed grains is good, the automation level is high, a control system is advanced, logistics layout is efficient, the frequency that workers make direct contact with the grains is reduced, and the labor intensity of workers is lowered. Man-machine isolation of dangerous procedures is achieved, and potential safety hazards are reduced.

Description

Technical Field

[0001] The invention relates to a continuous and automated processing technology for propellant grains, and belongs to the field of solid propellant manufacturing. Background Art

[0002] The traditional solid propellant post-processing process consists of processes such as loading, selecting, flaw detection, inner hole coating, inner coating curing, end packaging, drying, and trimming. These processes need to be carried out intermittently and segmented in different workshops, shifts, and time periods, resulting in low production efficiency, high transfer frequency, and high safety risks. To this end, a continuous and automated processing technology with stable, reliable operation and simple operation is designed, which connects the workshops involved with an automated conveyor line to complete the continuous post-processing process. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of frequent grain transportation, direct contact of personnel with grains, high labor intensity and great safety hazards in the traditional propellant grain processing process, and to provide a continuous and automated processing technology for propellant grains.

[0004] The object of the present invention is achieved through the following process:

[0005] The present invention provides a continuous and automated processing technology for propellant grains, and the specific process flow is as follows:

[0006] The 10 workshops of loading room, medicine turning room, testing room, flaw detection room, inner hole coating room, inner coating curing room, end coating room, drying room, trimming room and packing room are integrated into one production line, and a series of processes including loading - medicine turning - selection - flaw detection - inner hole coating - inner coating curing - end packing - medicine drying - trimming - medicine column buffering are completed continuously. The equipment in each process section can realize full automatic operation, and the rooms are equipped with cameras without blind spots, so that the production process of medicine columns can be visualized and controlled. The central control room monitors the whole process, and the production is safe and reliable.

[0007] Beneficial Effects

[0008] The propellant grain processing technology of the present invention can realize the continuous operations of loading, selecting, flaw detection, inner hole coating, fixing, end packing, drying, trimming and packing, thereby improving the production efficiency, achieving good consistency of formed grains, high automation level, advanced control system, efficient logistics layout, reducing the frequency of direct contact between personnel and grains, realizing the isolation of man and machine in dangerous processes, and reducing safety hazards. DETAILED DESCRIPTION

[0009] The present invention will be further described below in conjunction with the embodiments.

[0010] Example

[0011] The present invention provides a continuous and automated processing technology for propellant grains, and the specific process flow is as follows:

[0012] 1) Preparation of drug: The drug column after aging is loaded into the transfer trolley (60 pieces) and transported to the designated position of the drug preparation room by the conveyor. The transfer trolley is manually pushed out from the conveyor and placed in a fixed position. The drug column is manually taken out and scanned at the front end of the drug feeding conveyor line and placed on the V-shaped seat. The proximity switch is pressed down by the drug column to start the conveying command. The drug column moves forward one station until one drug feeding conveyor line is completely covered with drug columns. The other drug feeding conveyor line is manually covered with drug columns in the same way. Start the automatic operation switch of the whole line equipment. The drug column rolls down from the drug feeding conveyor line to the conveyor line of the drug room (the conveyor line of the drug room is divided into two sections, front and back, and is blocked by an isolation door in the middle). The isolation door is opened, and the safety pin is extended to start the front and back sections of the conveyor line of the drug room. The drug column is transported from the front section of the conveyor line of the drug room to the designated position of the rear section of the conveyor line of the drug room.

[0013] 2) Carrying of medicine: The medicine-carrying truss manipulator grabs the medicine column on the rear section of the conveying line entering the medicine-carrying room and puts it into lathe 1 to turn the end face flat. After the cleaning device cleans the medicine column, the lathe cover is opened, and the medicine-carrying truss manipulator grabs the medicine column and puts it into lathe 2 or lathe 3 to turn the conical surface. After the conical surface is turned, it is cleaned again. After cleaning, the medicine-carrying truss manipulator grabs the medicine column and puts it into the conveying line entering the inspection room to transport it to the medicine column inspection room.

[0014] 3) Inspection: The conveyor line into the inspection room is also divided into two sections, front and back, and the conveying method is the same as that of the conveyor line into the vehicle charge room. The inspection truss manipulator grabs the charge at the set position in the rear section of the conveyor line into the inspection room and puts it into the visual inspection device. The visual imaging system completes the size (length, taper, end face arc thickness and weight) inspection of the charge. Qualified products are placed on the conveyor line into the flaw detection room and transferred to the CT flaw detection room, and waste and defective products are placed in their corresponding medicine boxes. The transfer of charge here is completed by the inspection truss manipulator.

[0015] 4) CT flaw detection: The feeding conveyor line is connected to the previous process to transfer the product to the flaw detection room. The truss robot arm transports a batch of drugs to be inspected to the CT machine for inspection, and at the same time transports a batch of inspected drugs to the discharging conveyor line or the rework box or the waste box. The detection device can perform DR scanning and CT image reconstruction on the workpiece. After the reconstruction is completed, the defects of the DR image and the CT image can be automatically identified and automatically interpreted, and the comprehensive interpretation results and basis are given for automatic sorting and unloading. The control system controls the robot arm to unload materials according to the unloading results, and the qualified products are placed on the discharging conveyor line, and the unqualified products are placed in the rework box or the waste box. The discharging conveyor line coordinates with the inner coating room conveyor line to transport the qualified products out of the flaw detection room. The unqualified product storage cart can monitor the amount of stored drugs and prompt manual replacement of the storage cart before it is full.

[0016] 5) Inner hole coating: The inner hole coating robot grabs the medicine column from the flaw detection room and puts it on the spraying tooling. The inner hole coating machine automatically clamps the medicine column, and the spray gun slowly extends into the inner hole of the medicine column until the front end surface. The medicine column begins to rotate. At the same time, the spray gun sprays and retreats from the front end surface to the rear end surface. The spraying time is about 20 seconds. After the spraying is completed, the medicine column continues to rotate for about 4 minutes. The spray gun moves to the next station to spray the next medicine column. The spraying action process is the same. Move the spray gun to spray the medicine columns on the two stations. The inner hole coating robot grabs the medicine column that has completed the spraying process and puts it on the medicine drying rack in the ground rail trolley. The ground rail trolley transports the medicine drying rack filled with medicine columns to the inner hole coating curing room.

[0017] 6) Internal coating curing: The truss robot in the internal coating curing room places the medicine drying rack on the ground rail trolley onto the internal coating curing device. The conveyor line of the internal coating curing device moves forward one station, and the truss robot in the internal coating curing room grabs the empty medicine drying rack on the internal coating curing device and places it on the ground rail trolley. The medicine drying racks filled with medicine columns move forward on the conveyor line in sequence and arrive at the discharge end of the conveyor line after 4 days. The truss robot in the internal coating curing room grabs the empty medicine drying rack on the ground rail trolley and places it back on the drive and dissolution conveyor line, and then grabs the cured medicine drying rack and places it on the ground rail trolley. The medicine drying racks filled with medicine columns are transferred from the ground rail trolley to the end package room.

[0018] 7) End coating: The medicine drying rack moves to the end coating room, and the end coating robot takes out the medicine columns one by one and puts them into the end coating machine for end coating. After the end coating is completed, the medicine columns are grabbed and put into the medicine drying rack, and the ground rail trolley transports the medicine drying rack filled with medicine columns to the drying room.

[0019] 8) Drying and conveying: The drying truss manipulator grabs the medicine drying rack from the end package room and puts it on the drying conveyor line. The medicine drying rack moves forward one station. It takes 24 hours for the medicine drying rack filled with medicine columns to be transported from the beginning to the end of the drying conveyor line driven by the chain. The full load capacity of the curing conveyor line is 240 medicine columns. After drying, the drying truss manipulator grabs the medicine drying rack and puts it on the ground rail trolley, which transports the medicine drying rack to the trimming room.

[0020] 9) Trimming: The trimming robot grabs the medicine column from the medicine drying rack in the drying room and puts it into the trimming fixture. The trimming machine completes the trimming of the medicine column. The trimming robot then takes the medicine column from the trimming machine and puts it into the telescopic mechanism at the front end of the buffer conveyor line to transfer the medicine column to the packing room.

[0021] 10) Cache: The medicine pellets from the trimming process are rolled down by the front telescopic mechanism into the cache line in the packing room (27 medicine pellets can be cached). After manual inspection and screening, the medicine pellets are placed in the transfer cart (60 pellets). Unqualified products are placed in the medicine box. They are pushed out manually after get off work.

[0022] This production process realizes the continuous processing of the post-process of solid propellant grains, greatly improving the production efficiency.

[0023] This production process realizes the digitization and intelligence of the workshop, and the production process is highly automated. The number of operators required for a single shift is greatly reduced, and the number of people working in dangerous operations is reduced.

[0024] The drug pellets produced by this production process have been tested and are basically consistent with those processed by traditional processes. They all meet the product technical requirements and are superior to traditional processes in terms of processing consistency.

Claims

1. A continuous and automated processing process for propellant grains, characterized in that: The specific process is: Ten workshops, including loading room, medicine making room, testing room, flaw detection room, inner hole coating room, inner coating curing room, end coating room, drying room, trimming room and packing room, are integrated into one production line to continuously complete a series of processes including loading - medicine making - selection - flaw detection - inner hole coating - inner coating curing - end coating - medicine drying - trimming - medicine column caching.