Electric drive injection type output mechanism

Abstract

The utility model provides an electric drive injection type output mechanism which comprises a mechanism body, the mechanism body comprises an electric stretching cylinder, a coupler, an injection rod and the like, the electric stretching cylinder is connected to the injection rod through the coupler, one end of the injection rod extends into a cylinder body, one end of the cylinder body is provided with a switch valve body, and the other end of the cylinder body is provided with a valve rod. An oil inlet is formed in the switch valve body, an oil outlet is formed in the lower portion of the cylinder body, and fluid enters from the oil inlet, is compressed in a reciprocating mode through the injection rod and is output from the oil outlet. Through the power-on control of the electric stretching cylinder, the telescopic motion of the electric stretching cylinder drives the injection rod to move in the cylinder body. When the injection rod moves forwards, the medium in the cylinder body is compressed and output through the oil outlet. By controlling the displacement and speed of the electric stretching cylinder, quantitative output and pressure adjustment of an injected medium can be achieved, reciprocating motion of the electric stretching cylinder drives the injection rod to conduct quantitative and directional injection on the medium, and the device is simple in overall structure, practical, convenient to use and capable of being used and popularized.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection device technical field, in particular to a kind of electric drive injection type output mechanism. BACKGROUND

[0002] The existing fluid injection device usually adopts hydraulic cylinder or air cylinder as driving source, and realizes the quantitative delivery to specific fluid by reciprocating motion. However, the power source in the conventional device is relatively complex, and the control precision is limited, so it is not easy to adjust the injection amount and injection speed.

[0003] Therefore, there is an urgent need for a fluid injection type output mechanism that can accurately control the injection amount and pressure. UTILITY MODEL CONTENT

[0004] In view of this, the utility model provides an electric drive injection type output mechanism to solve the problems in the technical background, and the specific technical solutions are as follows:

[0005] An electric drive injection type output mechanism includes a mechanism body, the mechanism body includes an electric stretching cylinder, a coupling, an injection rod, a cylinder body and a mounting bracket, the electric stretching cylinder is connected to the injection rod through the coupling, one end of the injection rod extends into the inside of the cylinder body, one end of the cylinder body is provided with a switch valve body, the switch valve body is provided with an oil inlet, the lower part of the cylinder body is provided with an oil outlet, fluid enters from the oil inlet, and is output from the oil outlet by reciprocating compression of the injection rod.

[0006] Further, the cylinder body and the electric stretching cylinder are provided with a cylinder body connecting sleeve outside, and the inside of the cylinder body is a fluid working cavity.

[0007] Further, one end of the inside of the cylinder body close to the injection rod is provided with a guide sealing assembly, the guide sealing assembly includes a PE guide ring, a packing seal, a guide ring gland and a packing seal expansion ring, the outside of the packing seal is sleeved with the packing seal expansion ring, one end of the packing seal is provided with the PE guide ring, and the inner wall of the PE guide ring is provided with the guide ring gland.

[0008] Further, the mounting bracket is arranged on the outside of the front and rear ends of the cylinder body connecting sleeve for fixing and mounting.

[0009] The above technical solutions have the following beneficial effects:

[0010] The utility model discloses a power stretch cylinder's energized control makes its telescopic motion drive injection rod motion in the cylinder body. When injection rod moves forward, medium in the cylinder body is compressed and exports through oil outlet. When injection rod moves backward, the volume of the cylinder chamber increases, and medium can be supplemented and enters through oil inlet. Through the displacement and speed control of power stretch cylinder, the quantitative output and pressure regulation of injected medium can be controlled, and the reciprocating motion of power stretch cylinder drives injection rod to inject medium quantitatively and directionally, so that the overall structure is simple, practical and convenient, and can be widely used. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structure schematic view of the electric drive injection type output mechanism of the utility model;

[0012] Figure 2 It is a structure schematic view of the guide sealing assembly of the electric drive injection type output mechanism of the utility model;

[0013] In the drawing: 1 - power stretch cylinder;2 - cylinder connecting sleeve;3 - cylinder;4 - switch valve body;5 - shaft coupling;6 - injection rod;7 - guide sealing assembly;8 - oil outlet;9 - oil inlet;10 - mounting bracket;

[0014] 71 - PE guide ring;72 - universal seal;73 - guide ring gland;74 - universal seal expansion ring. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0016] Referring to Figure 1 As shown in the drawing, an electric drive injection type output mechanism is applied to high-viscosity liquid and high-solid-content ceramic paint or enamel paint or glue fluid injection in specific application. The power stretch cylinder 1 drives the injection rod 6 to reciprocate axially in the cylinder through the shaft coupling 5, medium enters the cavity through the oil inlet 9 and is output through the oil outlet 8, the switch valve body 4 can realize one-way or two-way flow control of medium, and the guide sealing assembly 7 ensures sealing and accurate guidance when the injection rod 6 moves.

[0017] The injection amount and injection pressure of output medium are adjusted through linear displacement and speed control of the power stretch cylinder 1, the guide sealing assembly 7 improves the sealing effect, leakage does not occur during the reciprocating motion of the injection rod 6, and the service life and reliability of the system are improved.

[0018] The reasonable layout of the cylinder connecting sleeve 2 and the mounting bracket 10 makes the whole device compact in structure. In actual use, appropriate material selection and parameter adjustment are made according to the characteristics of different fluids (such as lubricating oil, hydraulic medium or other fluids that need to be injected quantitatively).

[0019] The mechanism body of the embodiment includes an electric stretching cylinder 1, a shaft coupling 5, an injection rod 6, a cylinder 3 and a mounting bracket 10. The electric stretching cylinder 1 is connected to the injection rod 6 through the shaft coupling 5. One end of the injection rod 6 extends into the inside of the cylinder. One end of the cylinder is provided with an on-off valve body 4. The on-off valve body 4 is provided with an oil inlet 9. The lower part of the cylinder is provided with an oil outlet 8. Fluid enters from the oil inlet 9, is reciprocally compressed through the injection rod 6 and is output from the oil outlet 8.

[0020] The outside of the cylinder 3 and the electric stretching cylinder 1 is provided with a cylinder connecting sleeve 2. The inside of the cylinder 3 is a fluid working cavity. The inside of the cylinder 3 near one end of the injection rod 6 is provided with a guide sealing assembly 7. As shown in Figure 2 , the guide sealing assembly 7 includes a PE guide ring 71, a packing seal 72, a guide ring gland 73 and a packing seal expansion ring 74. The outside of the packing seal 72 is sleeved with the packing seal expansion ring 74. One end of the packing seal 72 is provided with the PE guide ring 71. The inner wall of the PE guide ring 71 is provided with the guide ring gland 73. The outside of the cylinder connecting sleeve 2 is provided with mounting brackets 10 at both ends for fixation and installation.

[0021] In the embodiment, the electric stretching cylinder 1 serves as a driving source and its reciprocating extension and retraction movement is controlled by an electric signal. The output end of the electric stretching cylinder 1 is connected to the injection rod 6 through the shaft coupling 5. The shaft coupling 5 is used to stably transmit the axial movement of the electric stretching cylinder 1 to the injection rod 6, reducing the influence of eccentricity and vibration on the system.

[0022] The injection rod 6 makes linear reciprocating movement in the cylinder 3. The front end of the injection rod 6 applies pressure to the fluid in the cylinder 3, so that the medium is discharged through the oil outlet 8. The on-off valve body 4 is arranged in the front part of the cylinder 3 or in the oil inlet and outlet circuit to control the inlet and outlet process of the fluid. It can be a one-way valve or a controllable valve according to the need. Fluid enters from the oil inlet 9, is reciprocally compressed through the injection rod 6 and is output from the oil outlet 8, which is used to be connected to a downstream pipeline or a liquid storage device. The guide sealing assembly 7 is arranged between the inside of the cylinder and the injection rod 6 to ensure the coaxiality and sealing property of the movement of the injection rod 6 and prevent leakage of the medium. The mounting bracket 10 is used for fixation and installation of the device. Various fixation modes can be selected according to the actual use environment.

[0023] The specific working principle of the utility model is as follows: in working, the energized control of the electric stretching cylinder 1 makes the telescopic movement drive the injection rod 6 to move in the cylinder body. When the injection rod 6 moves forward, the medium in the cylinder body 3 is compressed and output through the oil outlet 8. When the injection rod 6 moves backward, the volume of the chamber of the cylinder body 3 increases, and the medium can be supplemented into through the oil inlet 9. Through the accurate control of the displacement and speed of the electric stretching cylinder 1 in the control system, the quantitative output and pressure regulation of the injected medium can be realized. The setting of the on-off valve body 4 can make the device block the medium backflow when stopping, satisfying the requirements of special working conditions.

[0024] The above describes the basic principle and main features of the utility model, and the person skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification only illustrate the principle of the utility model, and the utility model will have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An electrically powered drive injection type output mechanism comprising a mechanism body, characterized by, The mechanism body comprises an electric stretching cylinder (1), a shaft coupling (5), an injection rod (6), a cylinder body (3) and a mounting bracket (10), the electric stretching cylinder (1) is connected to the injection rod (6) through the shaft coupling (5), one end of the injection rod (6) extends to the inside of the cylinder body (3), one end of the cylinder body (3) is provided with a switch valve body (4), the switch valve body (4) is provided with an oil inlet (9), the lower portion of the cylinder body (3) is provided with an oil outlet (8), fluid enters from the oil inlet (9), reciprocatingly compresses through the injection rod (6) and is output from the oil outlet (8).

2. An electrically driven injection output mechanism according to claim 1, wherein The outside of the cylinder body (3) and the electric stretching cylinder (1) is provided with a cylinder body connecting sleeve (2), the inside of the cylinder body (3) is a fluid working cavity.

3. An electrically driven injection output mechanism according to claim 2, wherein The inside of the cylinder body (3) is provided with a guide sealing assembly (7) close to one end of the injection rod (6), the guide sealing assembly (7) comprises a PE guide ring (71), a universal seal (72), a guide ring gland (73) and a universal seal expansion ring (74), the outside of the universal seal (72) is sleeved with the universal seal expansion ring (74), one end of the universal seal (72) is provided with the PE guide ring (71), the inner wall of the PE guide ring (71) is provided with the guide ring gland (73).

4. An electrically driven injection output mechanism according to any one of claims 1 or 3, wherein The outside of the cylinder body connecting sleeve (2) is provided with mounting brackets (10) at both ends for fixing and mounting.

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