Compensator of initiating explosive device group molding press

Abstract

The invention relates to a compensator for an initiating explosive device group molding press, which solves the problem of inconsistent explosive pressing pressure caused by inconsistent explosive loading amount of a group mold by adding a pressure compensator at a press to replace a traditional positioning explosive pressing process. Comprising a pressure compensation part, a pressure balance part and a leaked oil separation part which are sequentially connected through bolts from top to bottom, in the pressure compensation part, an oil injection ball valve, a first ball valve, two tee joints, a reducer union and a one-way valve are sequentially connected through threads, and a hydraulic energy accumulator is connected to the tee joint close to the oil injection ball valve in a threaded mode. The elbow is in threaded connection with the other tee joint, the high-precision unloading valve is in threaded connection with the elbow, and the one-way valve is in threaded connection with the oil cylinder cover plate to form a pressure compensation hydraulic loop; the pressure transmitter, the mechanical pressure gauge, the second ball valve and the three-way oil way base are sequentially connected through threads, and the three-way oil way base is connected with the oil cylinder cover plate through threads to form a pressure detection loop.

Description

Technical Field

[0001] The invention relates to an initiating device production device, in particular to an initiating device group molding machine compensator. Background Art

[0002] The compensator of the pyrotechnic group mold press is used in the pressure-pressing process of pyrotechnic production. It adopts hydraulic balance and pressure compensation technology. By combining with the press, it can complete the pressure pressing of multiple products in the mold at one time and output pressure according to the set value to ensure the consistency of the pressure pressing pressure of all products in the mold.

[0003] The typical process of explosive production includes single or multiple charging and pressing, in which the charge amount and pressure of the product play a decisive role in the product performance and quality. The traditional explosive production uses the positioning pressing technology, that is, during the production process, the press drives the pressing punch to descend to a fixed height, and then the limit block mechanically limits it to complete the pressing. Due to the influence of the limit block, all the pressing punches have the same downward distance each time, which will cause different charges on the product surface to be different, resulting in different internal agent density of the product, thus affecting the performance and quality of the product.

[0004] For the production of pyrotechnic group molds, since there are multiple products in a single mold, the existing group mold charging technology cannot guarantee that the charging amount of each product is the same. This will result in inconsistent product performance after pressing, and even affect the product qualification rate. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of inconsistent pressing pressure caused by inconsistent charging amounts in group molds by adding a pressure compensator at the press to replace the traditional positioning pressing process, thereby ensuring product performance and improving product qualification rate.

[0006] The present invention is achieved by the following technical solutions:

[0007] A compensator for a pyrotechnic group molding machine includes a pressure compensation part, a pressure balance part and an oil leakage isolation part, and the three parts are connected sequentially from top to bottom by bolts.

[0008] In the pressure compensation part, the oil filling ball valve, the ball valve 18, the two tees 24, the reducer 25, and the check valve 20 are connected by threads in sequence, the hydraulic accumulator 21 is threadedly connected to the tee near the oil filling ball valve 5, the elbow 23 is threadedly connected to another tee, the high-precision unloading valve 22 is threadedly connected to the elbow 23, and the check valve 20 is threadedly connected to the cylinder cover plate 6 to form a pressure compensation hydraulic circuit; the pressure transmitter 11, the mechanical pressure gauge 17, and the three-way oil circuit base 9 of the ball valve 18 are threadedly connected in sequence, and the three-way oil circuit base 9 is threadedly connected to the cylinder cover plate 6 to form a pressure detection circuit;

[0009] In the pressure balance part, the upper cylinder body 1, the lower cylinder body 7 and the cylinder cover plate 6 are connected, the long piston 3 passes through the upper cylinder body 1 and the lower cylinder body 7, the short piston 4 passes through the lower cylinder body 7, the long piston 3 is arranged according to a part of the product layout on the mold, and the short piston 4 is arranged according to another part of the product layout on the mold. The two together form the layout of all products on the mold. The upper ends of the long piston 3 and the short piston 4 are equipped with oil seals 13 and are pressed by an oil seal pressure plate 10. The bottom end surfaces of the long piston 3 and the short piston 4 are in contact with the product pressing punch;

[0010] In the oil leakage isolation part, the oil receiving port 5 is connected to the oil receiving pan 2 through threads, the guide column 8 passes through the oil receiving pan 2 through the guide hole, and the upper end thereof is connected to the oil umbrella 16.

[0011] The long pistons 3 and the short pistons 4 are arranged in a cross-layout in rows and columns.

[0012] The present invention applies a press compensator in group mold production according to the production process of explosives, so that the product performance is stable and the product qualification rate is increased by 7% compared with the traditional positioning medicine pressing technology. At the same time, the pressure compensator is equipped with a hydraulic sensor, which can collect the pressure in the medicine pressing process in real time through automation technology, thereby improving the digital level of the production process. Thirdly, by applying the pressure compensator, the product pressure accuracy is high and the consistency is good. If the charge amount exceeds the tolerance, the height after the medicine pressing will exceed the tolerance, making it easy to implement the medicine height inspection of the downstream products and prevent unqualified products from flowing into the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the general diagram of the compensator of the molding machine of the pyrotechnic group;

[0014] Figure 2 It is the pressure compensation part diagram;

[0015] Figure 3 It is the pressure balance part diagram;

[0016] Figure 4 This is a diagram of an oil leak isolation mechanism. DETAILED DESCRIPTION

[0017] The compensator of the pyrotechnic group molding machine of the present invention mainly includes pressure balancing technology and pressure compensation technology, wherein the pressure balancing technology ensures the pressure consistency of all products in the mold, and the pressure compensation technology ensures the accuracy of the pressing pressure.

[0018] The pressure balancing technology is to place the charge pressing punch of the pyrotechnic press inside a cavity, fill the cavity with oil, and use the oil pressure internal balancing technology to achieve the same force on each punch, thereby ensuring that the force acting on the pyrotechnic is consistent. The pressure compensation technology is to connect the closed cavity with a hydraulic compensator, a one-way valve, and a precision pressure regulating valve to form a pressure compensation system, thereby ensuring that the pressure is output according to the set pressure.

[0019] At the same time, an oil leakage isolation mechanism is designed, and sealing and isolation technology is applied to prevent product contamination caused by hydraulic oil leakage.

[0020] Example:

[0021] The pyrotechnic group mold press compensator consists of three parts, namely the pressure compensation part, the pressure balance part and the oil leakage isolation part. The three parts are connected by bolts from top to bottom. Figure 1 shown.

[0022] Pressure compensation part such as Figure 2 As shown, the oil filling ball valve 5, ball valve 18, hydraulic accumulator 21, tee 24, reducer 25, check valve 20, high-precision unloading valve 22, elbow 23 and other components are connected by threads, and the pressure compensation hydraulic circuit is formed by threads. The three-way oil circuit base 9, pressure transmitter 11, ball valve 18 and mechanical pressure gauge 17 are connected with the cylinder cover plate 6 by threads to form a pressure detection circuit. Its working principle is that the hydraulic oil is injected into the system hydraulic circuit through the oil filling ball valve 5, and the pressure of the medicine is set by the high-precision unloading valve 22 before working. During operation, the internal oil pressure of the cylinder cover plate 6 is subjected to the pressure of the medicine punch to press the hydraulic oil into the hydraulic accumulator 21 through the check valve 20. When the press returns, the hydraulic oil flows back from the hydraulic accumulator 21 to the inside of the cylinder cover plate 6, and the pressure accuracy during the working process is guaranteed by the high-precision unloading valve 22. The pressure transmitter 11 and the mechanical pressure gauge 17 are the same as the above-mentioned hydraulic circuit, which can realize the automatic detection and display of the internal pressure of the cylinder cover plate 6.

[0023] Pressure balance part Figure 3 As shown, the upper cylinder body 1, the lower cylinder body 7 and the cylinder cover plate 6 are connected, the long piston 3 passes through the upper cylinder body 1 and the lower cylinder body 7, the short piston 4 passes through the lower cylinder body 7, the long piston 3 is arranged according to the layout of a part of the products on the mold, and the short piston 4 is arranged according to the layout of another part of the products on the mold. The two together form the layout of all the products on the mold. The upper ends of the long piston 3 and the short piston 4 are equipped with special oil seals 13, which are pressed by the oil seal pressure plate 10. The bottom end faces of the long piston 3 and the short piston 4 are in contact with the product pressing punch. When the pyrotechnics are pressing, the pressure is transmitted to the pressing punch through the long piston 3 and the short piston 4. Since the long piston 3 and the short piston 4 are in the same oil chamber, the pressure acting on the product can be guaranteed to be consistent.

[0024] Oil leakage isolation part Figure 4 As shown, the oil receiving port 5 is connected to the oil receiving pan 2 by threads, the guide column 8 passes through the oil receiving pan 2 through the guide hole, and its upper end is connected to the oil umbrella 16. If the system has hydraulic oil leakage, the hydraulic oil will be poured into the wall of the oil receiving pan 2 through the oil umbrella 16 and discharged through the oil receiving port 5 to prevent product contamination.

Claims

1. A compensator for a pyrotechnic group molding machine, characterized by: It includes a pressure compensation part, a pressure balance part and an oil leakage isolation part, and the three parts are connected by bolts from top to bottom in sequence; In the pressure compensation part, the oil filling ball valve, the first and second tees of the ball valve, the reducer, and the one-way valve are connected by threads in sequence, the hydraulic accumulator is threadedly connected to the tee near the oil filling ball valve, the elbow is threadedly connected to another tee, the high-precision unloading valve is threadedly connected to the elbow, and the one-way valve is threadedly connected to the cylinder cover plate to form a pressure compensation hydraulic circuit; the pressure transmitter, the mechanical pressure gauge, the second and third tee oil circuit bases of the ball valve are threadedly connected in sequence, and the tee oil circuit base is threadedly connected to the cylinder cover plate to form a pressure detection circuit; In the pressure balance part, the upper cylinder body, the lower cylinder body and the cylinder cover plate are connected, the long piston passes through the upper cylinder body and the lower cylinder body, the short piston passes through the lower cylinder body, the long piston is arranged according to the layout of a part of the product on the mold, and the short piston is arranged according to the layout of another part of the product on the mold. The two together form the layout of all products on the mold, and the bottom end surfaces of the long piston and the short piston are in contact with the product pressing punch; In the oil leakage isolation part, the oil receiving port is connected to the oil receiving pan through threads, the guide column passes through the oil receiving pan through the guide hole, and the upper end thereof is connected to the oil umbrella.

2. The pyrotechnic group molding machine compensator according to claim 1 is characterized by: The long pistons and the short pistons are arranged in a cross-layout of rows and columns.

3. The pyrotechnic group molding machine compensator according to claim 1 is characterized by: The upper ends of the long piston and the short piston are equipped with oil seals and are pressed tightly with oil seal pressure plates.

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