A gas-liquid linkage device for controlling product pressure and density

Abstract

This utility model relates to the field of motor carbon brush production, and discloses a pneumatic-hydraulic linkage device for controlling product pressure and density. The device includes a cylinder, a piston slidably connected to the inner wall of the cylinder, a transmission rod fixedly connected to the rear side of the piston slidably, a fixed shell detachably connected to the outer wall of the cylinder, a protective shell threadedly connected to the inner wall of the fixed shell slidably, a hydraulic cylinder fixedly connected to the rear side of the protective shell, a piston slidably connected to the inner wall of the hydraulic cylinder, a support seat slidably connected to the rear side of the piston slidably, a balance piston slidably connected to the inner wall of the protective shell, a groove slidably formed on the inner wall of the cylinder, and a groove slidably formed on the inner wall of the hydraulic cylinder. This pneumatic-hydraulic linkage device effectively solves the shortcomings of mechanical and hydraulic presses, thereby ensuring that the density and dimensions of the product meet requirements during the production process.

Description

Technical Field

[0001] This utility model relates to the field of motor carbon brush production, and in particular to a gas-liquid linkage device for controlling product pressure and density. Background Technology

[0002] A pneumatic-hydraulic linkage device for controlling product pressure and density is mainly used to precisely regulate pressure parameters during the carbon brush pressing process to ensure the uniformity and consistency of carbon brush density. This device, through the coordinated linkage of a pneumatic system and a hydraulic system, can utilize the flexibility of pneumatic transmission to achieve rapid pressure response and adjustment, and can also rely on the stability of hydraulic transmission to ensure continuous and balanced pressure output. Thus, during the carbon brush pressing and molding stage, a matching pressure value is precisely applied according to different material formulations and specifications, so that carbon powder particles are tightly packed in the mold and form an ideal density.

[0003] A pneumatic-hydraulic linkage device for controlling product pressure and density mainly consists of a pneumatic power unit, a hydraulic actuator unit, a linkage control unit, and auxiliary components. The pneumatic power unit includes an air compressor, an air tank, and a pressure regulating valve, which provides a stable air source and regulates the input air pressure. The hydraulic actuator unit consists of a hydraulic cylinder, a hydraulic pump, an accumulator, and oil pipelines, which is responsible for converting pneumatic energy into hydraulic energy to achieve pressure output. These structures form a closed-loop control through a pneumatic-hydraulic conversion circuit, enabling the flexible regulation of the pneumatic system and the stable output of the hydraulic system to work together, thereby achieving precise control of pressure and density during carbon brush pressing.

[0004] In the existing technology, carbon brushes have extremely poor powder flowability during the pressing process, making it difficult to guarantee the product size if a hydraulic press is used, while the product density cannot be guaranteed if a mechanical press is used. Therefore, a pneumatic-hydraulic linkage device for controlling product pressure and density is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a gas-liquid linkage device for controlling product pressure and density, aiming to improve the problem that the existing technology does not incorporate a gas-liquid linkage device in the carbon brush pressing process, making it difficult to guarantee the product density and size.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pneumatic-hydraulic linkage device for controlling product pressure and density includes a cylinder, a piston slidably connected to the inner wall of the cylinder, a transmission rod fixedly connected to the rear side of the piston slidably, a fixed shell detachably connected to the outer wall of the cylinder, a protective shell threadedly connected to the inner wall of the fixed shell slidably, a hydraulic cylinder fixedly connected to the rear side of the protective shell, a piston slidably connected to the inner wall of the hydraulic cylinder, a support seat slidably connected to the rear side of the piston slidably, a balance piston slidably connected to the inner wall of the protective shell, a groove slidably formed on the inner wall of the cylinder, and a groove slidably formed on the inner wall of the hydraulic cylinder.

[0008] As a further description of the above technical solution:

[0009] A balance piston is fixedly connected to the rear side of the transmission rod, and the rear side of the oil cylinder is fixedly connected to the front side of the support base.

[0010] As a further description of the above technical solution:

[0011] The outer wall of piston one is slidably connected to the inner wall of groove one, and the outer wall of piston two is slidably connected to the inner wall of groove two.

[0012] As a further description of the above technical solution:

[0013] The rear side of the first fixed shell is detachably connected to the second fixed shell, and the outer wall of the protective shell is slidably connected to the inner wall of the second fixed shell.

[0014] As a further description of the above technical solution:

[0015] The rear side of the second fixed housing is detachably connected to the third fixed housing, and the rear side of the third fixed housing is detachably connected to the front side of the oil cylinder.

[0016] As a further description of the above technical solution:

[0017] The rear side of the fixed shell 2 is detachably provided with a positioning shell, and a sliding arm is fixedly connected to the outer wall of the positioning shell.

[0018] As a further description of the above technical solution:

[0019] Two guide rods are slidably connected to the outer wall of the sliding arm, and the inner wall of the positioning shell is detachably connected to the outer wall of the fixed shell.

[0020] This utility model has the following beneficial effects:

[0021] In this invention, the linkage structure of the cylinder and the oil cylinder allows for automatic pressure adjustment based on product density when the main shaft of the mechanical press reaches the bottom dead center. When the density is insufficient, the hydraulic device automatically compresses to compensate for the pressure. Through the coordinated action of piston one, transmission rod, balance piston, and piston two, the transmission and conversion of pneumatic and hydraulic pressure are achieved. This pneumatic-hydraulic linkage device effectively solves the shortcomings of mechanical and hydraulic presses, thereby ensuring that the density and dimensions of the product meet the requirements during the production process. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a gas-liquid linkage device for controlling product pressure and density proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the positioning shell of a gas-liquid linkage device for controlling product pressure and density proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the protective shell of a gas-liquid linkage device for controlling product pressure and density proposed in this utility model.

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0026] Legend:

[0027] 1. Cylinder; 2. Piston 1; 3. Transmission rod; 4. Fixed shell 1; 5. Protective shell; 6. Oil cylinder; 7. Piston 2; 8. Support seat; 9. Balance piston; 10. Groove 1; 11. Groove 2; 12. Fixed shell 2; 13. Fixed shell 3; 14. Positioning shell; 15. Sliding arm; 16. Guide rod. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment: This linkage device mainly solves the problem of ensuring the density and size of the product by adding a gas-hydraulic linkage device during the pressing of carbon brushes by a mechanical press. A gas-hydraulic linkage device is installed on the main shaft of the mechanical press. When the mechanical press runs to the bottom dead center, if the product density is insufficient, the hydraulic device will automatically compress to ensure the consistency of product density. A gas-hydraulic linkage device for controlling product pressure and density includes a cylinder 1. A piston 2 is slidably connected to the inner wall of the cylinder 1. The piston 2 can slide along the inner wall in the internal space of the cylinder 1 to realize the transmission and conversion of air pressure. A transmission rod 3 is fixedly connected to the rear side of the piston 2. The transmission rod 3 transmits the movement of the piston 2 to the balance piston 9. A fixed shell 4 is detachably connected to the outer wall of the cylinder 1. The outer wall of the cylinder 1 and the fixed shell 4 are detachably connected to each other to facilitate the installation and removal of the fixed shell 4.

[0030] A protective shell 5 is threadedly connected to the inner wall of the fixed shell 4. The inner wall of the fixed shell 4 is connected to the protective shell 5 by threads, which facilitates the removal and installation of the protective shell 5. A hydraulic cylinder 6 is fixedly connected to the rear side of the protective shell 5, and the protective shell 5 and the hydraulic cylinder 6 are connected to form a whole. A piston 7 is slidably connected to the inner wall of the hydraulic cylinder 6. In the internal space of the hydraulic cylinder 6, the piston 7 can slide along the inner wall to realize the transmission of hydraulic pressure and the application of pressure. A support seat 8 is slidably connected to the rear side of the piston 7. When the piston 7 is squeezed from the rear, the piston 7 can slide along the support seat. 8 slides forward. The inner wall of the protective shell 5 is slidably connected to the balance piston 9. The sliding of the balance piston 9 in the inner wall of the protective shell 5 is used to balance the pressure of air and hydraulic pressure. The inner wall of the cylinder 1 is provided with a groove 10. The groove 10 is machined on the inner wall of the cylinder 1 to cooperate with the sliding of the piston 2, and plays a role in positioning and guiding. At the same time, it contains compressed air. The inner wall of the oil cylinder 6 is provided with a groove 11. The groove 11 is machined on the inner wall of the oil cylinder 6 to cooperate with the sliding of the piston 7, and plays a role in positioning and guiding. At the same time, it contains hydraulic oil.

[0031] Reference Figures 1 to 3A balance piston 9 is fixedly connected to the rear side of the transmission rod 3. The rear side of the transmission rod 3 is fixedly connected to the balance piston 9, enabling the transmission rod 3 to move in conjunction with the balance piston 9. The rear side of the hydraulic cylinder 6 is fixedly connected to the front side of the support base 8. The fixed connection between the support base 8 and the fixed hydraulic cylinder 6 is to keep the internal space closed. The outer wall of piston 12 is slidably connected to the inner wall of groove 10. The outer wall of piston 12 contacts the inner wall of groove 10 and can slide. Groove 10 guides and limits piston 12. The outer wall of piston 27 is slidably connected to groove 211. The inner wall of piston 2 7 is in contact with the inner wall of groove 2 11 and can slide. Groove 2 11 guides and limits piston 2 7. Fixed shell 2 12 is detachably connected to the rear side of fixed shell 1 4. The detachable connection facilitates the separation and assembly of fixed shell 1 4 and fixed shell 2 12. The outer wall of protective shell 5 is slidably connected to the inner wall of fixed shell 2 12. Fixed shell 2 12 provides guidance for the installation of protective shell 5. Fixed shell 3 13 is detachably connected to the rear side of fixed shell 2 12. After fixed shell 2 12 is disassembled, 14 positioning shell can be removed.

[0032] The rear side of the fixed shell 13 is detachably connected to the front side of the hydraulic cylinder 6. This detachable connection ensures the installation stability of the hydraulic cylinder 6. The rear side of the fixed shell 12 is detachably connected to the positioning shell 14. This detachable connection facilitates the removal of the positioning shell 14, which is used to determine the position of the device. The outer wall of the positioning shell 14 is fixedly connected to the sliding arm 15. The outer wall of the positioning shell 14 is fixedly connected to the sliding arm 15, which is used to realize the reciprocating sliding motion of the device. The outer wall of the sliding arm 15 is slidably connected to two guide rods 16. The outer wall of the sliding arm 15 contacts and can slide with the two guide rods 16. The guide rods 16 guide and support the sliding arm 15. The inner wall of the positioning shell 14 is detachably connected to the outer wall of the fixed shell 13. This detachable connection allows for the sliding disassembly and installation of the positioning shell 14 and the fixed shell 13.

[0033] Working principle: When the mechanical press reaches the bottom dead center and the product density is insufficient, cylinder 1 drives piston 2 to slide backward. Piston 2 drives balance piston 9 to move backward through transmission rod 3, thereby compressing the hydraulic oil in cylinder 6 and pushing piston 7 to slide backward. When the mechanical press reaches the bottom dead center and the product density is excessive, piston 7 slides forward under pressure. The hydraulic oil in groove 11 is compressed and pushes balance piston 9 forward. Balance piston 9 drives piston 2 to reset through transmission rod 3, so that the compressed air in cylinder 1 is compressed. The whole process achieves automatic pressure adjustment through pneumatic-hydraulic linkage to ensure the consistency of density and size during carbon brush pressing.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic-hydraulic unit for controlling the pressure and density of a product, comprising a pneumatic cylinder (1), characterized in that: The inner wall of the cylinder (1) is slidably connected to a piston (2), and the rear side of the piston (2) is fixedly connected to a transmission rod (3). The outer wall of the cylinder (1) is detachably connected to a fixed shell (4). The inner wall of the fixed shell (4) is threadedly connected to a protective shell (5). The rear side of the protective shell (5) is fixedly connected to a hydraulic cylinder (6). The inner wall of the hydraulic cylinder (6) is slidably connected to a piston (7). The rear side of the piston (7) is slidably connected to a support seat (8). The inner wall of the protective shell (5) is slidably connected to a balance piston (9). The inner wall of the cylinder (1) is provided with a groove (10), and the inner wall of the hydraulic cylinder (6) is provided with a groove (11).

2. A gas-liquid linkage device for controlling the pressure and density of a product according to claim 1, characterized in that: The rear side of the transmission rod (3) is fixedly connected to a balance piston (9), and the rear side of the oil cylinder (6) is fixedly connected to the front side of the support base (8).

3. The gas-liquid linkage device for controlling product pressure and density according to claim 1, characterized in that: The outer wall of piston one (2) is slidably connected to the inner wall of groove one (10), and the outer wall of piston two (7) is slidably connected to the inner wall of groove two (11).

4. The gas-liquid linkage device for controlling product pressure and density according to claim 1, characterized in that: The rear side of the first fixed shell (4) is detachably connected to the second fixed shell (12), and the outer wall of the protective shell (5) is slidably connected to the inner wall of the second fixed shell (12).

5. The gas-liquid linkage device for controlling product pressure and density according to claim 4, characterized in that: The rear side of the fixed shell two (12) is detachably connected to the fixed shell three (13), and the rear side of the fixed shell three (13) is detachably connected to the front side of the oil cylinder (6).

6. The gas-liquid linkage device for controlling product pressure and density according to claim 5, characterized in that: The rear side of the fixed shell 2 (12) is detachably provided with a positioning shell (14), and a sliding arm (15) is fixedly connected to the outer wall of the positioning shell (14).

7. A gas-liquid linkage device for controlling product pressure and density according to claim 6, characterized in that: The outer wall of the sliding arm (15) is slidably connected to two guide rods (16), and the inner wall of the positioning shell (14) is detachably connected to the outer wall of the fixed shell three (13).

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