Integrated electric cylinder with front-mounted built-in pressure sensor

Abstract

The utility model belongs to electric cylinder technical field, concretely relates to a front -positioned built -in pressure sensor's integrated electric cylinder, and this electric cylinder includes cylinder, front end cover, piston rod, pressure sensor, encoder plug, brake plug and power line plug. Pressure sensor sets up between front end cover and cylinder, its outer ring is connected with cylinder, inner ring is connected with front end cover, and is equipped with gap between pressure sensor and front end cover. The piston rod is under the power line plug power and stretches out, passes through front end cover and transmits the stress, makes pressure sensor deformation to realize pressure measurement. The utility model will pressure sensor front -positioned, is away from bearing and stator and other heat source, effectively reduces the influence of temperature to sensor accuracy, improves the accuracy and stability of pressure detection.

Description

Technical Field

[0001] This utility model belongs to the field of electric cylinder technology, specifically relating to an integrated electric cylinder with a front-mounted built-in pressure sensor. Background Technology

[0002] An integrated electric cylinder is a linear drive device that integrates a motor, transmission mechanism, and actuator into one unit, and is widely used in industrial automation, machining, and other fields. In existing technology, pressure sensors are typically located at the rear end of the electric cylinder, near the bearings and stator. During operation, due to bearing friction and stator heating, the temperature can rise from an initial 20°C to 50°C, and even reach 60°C internally. This temperature rise directly affects the temperature compensation mechanism of the pressure sensor, leading to decreased measurement accuracy and even sensor failure.

[0003] Furthermore, existing pressure sensors primarily withstand pressure but cannot effectively withstand tension, and their proximity to heat sources further exacerbates the impact of temperature on accuracy. Therefore, there is an urgent need for an electric cylinder structure that can reduce temperature interference and improve measurement stability. Utility Model Content

[0004] Purpose of the utility model: To provide an integrated electric cylinder with a front-mounted built-in pressure sensor to solve the problems mentioned above.

[0005] Technical solution: An integrated electric cylinder with a front-mounted built-in pressure sensor, comprising a cylinder barrel, a front end cover, a piston rod, a pressure sensor, an encoder plug, a brake plug, and a power line plug, characterized in that: the pressure sensor is disposed between the front end cover and the front end of the cylinder barrel, the outer ring of the pressure sensor is connected to the cylinder barrel, the inner ring is connected to the front end cover, and a gap is provided between the pressure sensor and the front end cover.

[0006] In a further embodiment, the encoder plug is mounted on an encoder mount, and the brake plug is mounted on a brake mount.

[0007] In a further embodiment, the brake seat is disposed between the encoder seat and the rear end of the cylinder.

[0008] In a further embodiment, the size of the gap is 1 mm.

[0009] In a further embodiment, the pressure sensor detects pressure by deformation caused by the force transmitted through the front end cover when the piston rod extends.

[0010] In a further embodiment, the encoder plug is used to collect position information, the brake plug is used to control braking action, and the power line plug is installed on the cylinder body to supply power to the stator inside the cylinder.

[0011] In a further embodiment, the pressure sensor is positioned away from the bearings and stator inside the cylinder to reduce the impact of temperature on sensor accuracy.

[0012] The advantages of this utility model are:

[0013] 1. The pressure sensor is positioned in front, away from heat sources such as bearings and stators, significantly reducing the impact of temperature on sensor accuracy;

[0014] 2. By directly transmitting force through the front cover, interference during force transmission is reduced, improving the accuracy of pressure detection;

[0015] 3. It has a compact structure and high integration, making it suitable for a variety of automation application scenarios. Attached Figure Description

[0016] Figure 1 This is a top view of the present invention.

[0017] Figure 2 This is the left view of this utility model.

[0018] Attached reference numerals: 1. Encoder plug; 2. Encoder mount; 3. Brake plug; 4. Brake mount; 5. Power line plug; 6. Cylinder; 7. Pressure sensor; 8. Front cover; 9. Piston rod. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] An integrated electric cylinder with a front-mounted built-in pressure sensor includes: an encoder plug 1, an encoder seat 2, a brake plug 3, a brake seat 4, a power line plug 5, a cylinder 6, a pressure sensor 7, a front end cover 8, and a piston rod 9.

[0023] In one embodiment, such as Figures 1 to 2 As shown, the pressure sensor 7 is located between the front cover 8 and the cylinder 6. Its outer ring is connected to the cylinder 6, and its inner ring is connected to the front cover 8. A gap is provided between the pressure sensor 7 and the front cover 8. The piston rod 9 extends under the power line and transmits the force through the front cover 8, causing the pressure sensor 7 to deform to achieve pressure measurement.

[0024] In one embodiment, such as Figures 1 to 2 As shown, the gap is 1 mm in size, which allows the pressure sensor 7 to deform under stress.

[0025] In one embodiment, such as Figures 1 to 2 As shown, the encoder plug 1 is mounted on the encoder base 2, and the brake plug 3 is mounted on the brake base 4.

[0026] In one embodiment, such as Figures 1 to 2 As shown, encoder plug 1 is used to collect the position information of piston rod 9, brake plug 3 is used to control the opening and closing of brake mechanism, and power line plug 5 is used to supply power to stator in cylinder 6 to drive piston rod 9 to move.

[0027] Specifically, the workflow of this utility model is illustrated below through embodiments:

[0028] Example 1:

[0029] This embodiment provides an integrated electric cylinder with a front-mounted built-in pressure sensor 7. The cylinder barrel 6 houses a stator and a piston rod 9, and a front end cover 8 is fixed to the front end of the cylinder barrel 6. The pressure sensor 7 is located between the front end cover 8 and the cylinder barrel 6; its outer ring is connected to the cylinder barrel 6 by bolts, and its inner ring is connected to the front end cover 8 by a slot. A 1mm gap is maintained between the pressure sensor 7 and the front end cover 8 to allow for deformation under stress.

[0030] During operation, the position information of the piston rod 9 is acquired through encoder plug 1, the brake plug 3 receives a signal to open the brake, and the power line plug 5 supplies power to the stator, causing the piston rod 9 to extend forward. When the piston rod 9 contacts an external object, the reaction force is transmitted to the pressure sensor 7 through the front cover 8, causing it to deform. The pressure sensor 7 converts the deformation into an electrical signal output, realizing pressure detection.

[0031] Because the pressure sensor 7 is far from the bearing and stator, its operating temperature is stable and unaffected by the temperature rise inside the electric cylinder, thus ensuring measurement accuracy.

[0032] Example 2:

[0033] In another embodiment, the pressure sensor 7 can be a strain gauge type or a piezoelectric sensor, and the gap size can be adjusted according to the actual application, but 1 mm is preferred to ensure deformation sensitivity and structural strength. The connection between the front cover 8 and the cylinder 6 can also be welding or integral molding to enhance the overall rigidity.

[0034] This invention is not only applicable to industrial robots, but also to precision assembly, testing equipment and other applications with high pressure detection requirements.

[0035] Working principle: The pressure sensor 7 of this utility model is located between the front cover 8 and the cylinder 6. The outer ring of the pressure sensor is connected to the cylinder 7, and the inner ring is connected to the front cover 8. There is a 1mm gap between 7 and 8. In order to deform the pressure sensor 7, position information is collected through the encoder plug 1, the brake plug 3 is opened, and power is supplied to the stator in the cylinder 6 through the power line 5. The piston rod 9 extends. The end face of the front cover 8 is fixed. In this way, the piston rod 9 contacts the object and is subjected to force, so the pressure sensor deforms. This realizes the application of the pressure sensor built-in, and avoids the pressure sensor being located between the brake seat 4 and the cylinder 6, away from the heat source, and directly contacting the force through the front cover, so that the force is less interfered with in the process, and the output of the pressure sensor 7 is more accurate.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An integrated electric cylinder with a front-mounted built-in pressure sensor, characterized in that, The device includes a cylinder, a front end cover, a piston rod, a pressure sensor, an encoder plug, a brake plug, and a power line plug. The pressure sensor is located between the front end cover and the front end of the cylinder; its outer ring is connected to the cylinder, and its inner ring is connected to the front end cover; a gap exists between the pressure sensor and the front end cover.

2. The integrated electric cylinder with a front-mounted built-in pressure sensor according to claim 1, characterized in that, The encoder plug is mounted on the encoder mount, and the brake plug is mounted on the brake mount.

3. The integrated electric cylinder with a front-mounted built-in pressure sensor according to claim 2, characterized in that, The brake mount is located between the encoder mount and the rear end of the cylinder.

4. The integrated electric cylinder with a front-mounted built-in pressure sensor according to claim 1, characterized in that, The size of the gap is 1 mm.

5. An integrated electric cylinder with a front-mounted built-in pressure sensor according to claim 1, characterized in that, The pressure sensor detects pressure by deformation, which is caused by the force transmitted through the front end cover when the piston rod extends.

6. An integrated electric cylinder with a front-mounted built-in pressure sensor according to claim 1, characterized in that, The encoder plug is used to collect position information, the brake plug is used to control the braking action, and the power line plug is installed on the cylinder to supply power to the stator inside the cylinder.

7. An integrated electric cylinder with a front-mounted built-in pressure sensor according to claim 1, characterized in that, The pressure sensor is positioned away from the bearings and stator inside the cylinder to reduce the impact of temperature on the sensor's accuracy.

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