Cylinder with position detection function

Abstract

The application relates to a cylinder with a position detection function, belonging to the technical field of pneumatic actuators, which comprises a pneumatic cylinder, a first piston rod, a second piston rod and a distance detection assembly; the first piston rod and the second piston rod are telescopically installed on the pneumatic cylinder and are respectively connected with a first detection ring and a second detection ring; the distance detection assembly is fixed to the pneumatic cylinder and comprises a support frame and two groups of independent adjusting assemblies; a distance measuring sensor is installed on each adjusting assembly, the measuring probes of the distance measuring sensors are respectively aligned with the corresponding detection rings, the displacement of the detection rings is detected in a non-contact mode in real time, and the extension length of the piston rod is accurately obtained; the adjusting assembly adjusts the position of the distance measuring sensor through a sliding rail and an adjusting piece, and the installation requirement of cylinders with different sizes is met; the design realizes the synchronous and continuous monitoring of the positions of the double piston rods, avoids mechanical wear, and improves the detection precision and the system adaptability.

Description

Technical Field

[0001] This application relates to the technical field of pneumatic actuators, and in particular to a cylinder with a position detection function. Background Technology

[0002] As the core actuator of pneumatic drive systems, cylinders are widely used in industrial automation due to their simple structure, low cost, and convenient maintenance. With the continuous improvement of automation, especially in precision assembly and synchronous control, the demand for real-time and precise positioning and process monitoring of cylinder pistons is becoming increasingly prominent.

[0003] However, traditional cylinders typically only have basic reciprocating motion functions and lack a built-in, effective real-time piston position feedback mechanism, which means the system cannot directly obtain continuous and accurate position information of the piston during its stroke. Utility Model Content

[0004] In order to obtain the position information of the piston during its stroke, this application provides a cylinder with a position detection function.

[0005] The cylinder with position detection function provided in this application adopts the following technical solution: A cylinder with position detection function includes a pneumatic cylinder, a first piston rod, a second piston rod, and a distance detection component; the first piston rod and the second piston rod are respectively telescopically mounted on the pneumatic cylinder, a first detection ring is connected to the first piston rod, and a second detection ring is connected to the second piston rod; the distance detection component is mounted on the pneumatic cylinder and is used to detect the length of the first piston rod and the second piston rod extending out of the pneumatic cylinder.

[0006] By adopting the above technical solution, the distance detection component can synchronously monitor the first and second detection rings, and realize independent non-contact measurement of the extension length of the two piston rods. The connecting rod extends the first detection ring to the area of ​​the second piston rod, so that both detection rings are within the effective detection range of the distance sensor on the support frame. This layout makes the detection component structure compact and reduces the installation span of the two sensors, thereby effectively solving the position monitoring problem caused by the opposite side arrangement of the two piston rods.

[0007] Preferably, the distance detection component includes a support frame and an adjustment component. The support frame is connected to a pneumatic cylinder, and the adjustment component is mounted on the support frame. Two sets of adjustment components are provided, including a first adjustment component and a second adjustment component. Both sets of adjustment components are equipped with distance measuring sensors, and each distance measuring sensor is connected to a measuring probe. The first adjustment component is used to adjust the alignment of the measuring probe on its own distance measuring sensor with a first detection ring; the second adjustment component is used to adjust the alignment of the measuring probe on its own distance measuring sensor with a second detection ring.

[0008] By adopting the above technical solution, the two sets of adjustment components independently control the alignment of the measuring probe of the ranging sensor with the corresponding detection ring, ensuring that the detection signal accurately points to the target; the support frame provides the installation base, and the slide rail structure of the adjustment components adapts to the installation requirements of cylinders of different sizes.

[0009] Preferably, the support frame includes a first bracket and a second bracket, the first adjustment component is mounted on the first bracket, and the second adjustment component is mounted on the second bracket.

[0010] By adopting the above technical solution, the separate design of the first and second supports allows the two sets of adjustment components to be positioned independently, avoiding sensor signal interference. The horizontal and vertical plates form a stable support, ensuring the stability of the probe during measurement.

[0011] Preferably, the adjustment assembly includes a slide rail, a mounting component, and an adjusting component. The slide rail is connected to the support frame, the mounting component is slidably connected to the slide rail, the ranging sensor is connected to the mounting component, and the adjusting component is connected to the support frame. The adjusting component is also connected to the mounting component, and the adjusting component is used to adjust the position of the ranging sensor on the support frame.

[0012] By adopting the above technical solution, the slide rail guides the installation component to move linearly, thereby adjusting the position of the ranging sensor; the adjusting component finely adjusts the sensor position through threaded transmission to ensure that the measuring probe and the detection ring are axially aligned.

[0013] Preferably, the ranging sensor is connected to the mounting component via a positioning element.

[0014] By adopting the above technical solution, the ranging sensor is connected to the mounting component through the positioning component, realizing quick assembly and disassembly of the sensor and the mounting hole; the constraint structure of the positioning component prevents the ranging sensor from shifting and ensures that the measuring probe is axially aligned with the detection ring.

[0015] Preferably, the positioning component includes a first nut and a second nut, the mounting component has a mounting hole, and one end of the ranging sensor with a measuring probe passes through the mounting hole; the first nut is threadedly connected to the ranging sensor and located on one side of the mounting component, and the second nut is connected to the ranging sensor and located on the other side of the mounting component.

[0016] By adopting the above technical solution, the positioning component adopts a double nut structure of a first nut and a second nut, which are placed on both sides of the mounting component and clamped and fixed. By turning the nuts, the axial position of the ranging sensor in the mounting hole can be finely adjusted, thereby accurately controlling the distance between the measuring probe and the detection ring and optimizing the signal reflection conditions.

[0017] Preferably, the distance detection component further includes a display, and the distance sensor is connected to the display via leads.

[0018] By adopting the above technical solution, the display receives displacement data from the ranging sensor via leads and displays the position of the dual piston rods in real time, making it convenient for operators to directly read the monitoring results.

[0019] Preferably, a connecting rod is connected between the first piston rod and the first detection ring. One end of the connecting rod is connected to the first piston rod, and the other end of the connecting rod is close to the second detection ring and connected to the first detection ring.

[0020] By adopting the above technical solution, the connecting rod extends the first detection ring to the area adjacent to the second detection ring, so that both detection rings are within the detection coverage of the support frame, thereby solving the problem of signal loss caused by the remote location of the first piston rod detection ring.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By installing a distance detection component on the pneumatic cylinder, the measuring probe of its distance sensor faces the detection ring fixed on the first and second piston rods respectively, and continuously and in real time detects the displacement of the detection ring relative to the fixed end face of the pneumatic cylinder in a non-contact manner. This displacement directly represents the extension length of the corresponding piston rod, thus enabling the system to directly and in real time acquire the position information of the two piston rods. The non-contact distance measurement principle reduces the risk of detection failure due to mechanical wear, helping to maintain stable operation of the detection function. Simultaneously, the sensor mounting component can be moved by adjusting the adjusting screw and knob of the component to adapt to the position of the detection ring on cylinders of different sizes. The distance between the measuring probe and the detection ring can be adjusted with the positioning nut to ensure proper alignment and working distance, enhancing the versatility and adaptability of the cylinder position detection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the overall structure in the embodiments of this application.

[0023] Figure 2 This is a cross-sectional schematic diagram used to illustrate the overall structure in the embodiments of this application.

[0024] Figure 3 This is a schematic diagram illustrating the overall structure of the distance detection component in the embodiments of this application.

[0025] Figure 4 This is a partial structural diagram illustrating the distance detection component in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Pneumatic cylinder; 2. First piston rod; 21. Connecting rod; 22. First detection ring; 3. Second piston rod; 31. Second detection ring; 4. Distance detection assembly; 41. Support frame; 411. Vertical plate; 412. Horizontal plate; 413. First bracket; 414. Second bracket; 42. Adjustment assembly; 4201. First adjustment assembly; 4202. Second adjustment assembly; 421. Slide rail; 422. Mounting component; 4221. Mounting hole; 43. Distance sensor; 431. Measuring probe; 44. Positioning component; 441. First nut; 442. Second nut; 45. Adjustment component; 451. Adjustment knob. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] This application discloses a cylinder with a position detection function, referring to... Figures 1-2 The device includes a pneumatic cylinder 1, a first piston rod 2, a second piston rod 3, and a distance detection component 4. The first piston rod 2 and the second piston rod 3 are telescopically mounted on the pneumatic cylinder 1. The end of the first piston rod 2 can extend from one end of the pneumatic cylinder 1, and the end of the second piston rod 3 can extend from the opposite end. The distance detection component 4 is mounted on the pneumatic cylinder 1 and is used to detect the length of the first piston rod 2 and the second piston rod 3 extending from the pneumatic cylinder 1.

[0029] Reference Figures 1-2 A connecting rod 21 is fixedly connected to the side wall of the first piston rod 2 near the second piston rod 3. The axis of the connecting rod 21 is parallel to the axis of the first piston rod 2. One end of the connecting rod 21, away from the first piston rod 2, extends out of the cylinder body of the pneumatic cylinder 1, and a first detection ring 22 is fixedly connected to the end of the connecting rod 21. The other end of the connecting rod 21 is close to the second detection ring 31. The second piston rod 3 is coaxial with the first piston rod 2, and a second detection ring 31 is fixedly connected to the end of the second piston rod 3, away from the first piston rod 2.

[0030] Reference Figures 1-3The distance detection component 4 includes a support frame 41 and an adjustment component 42. The support frame 41 includes a vertical plate 411, a horizontal plate 412, a first bracket 413, and a second bracket 414. The lower end of the vertical plate 411 is fixedly connected to the pneumatic cylinder 1. The lower bottom wall of the horizontal plate 412 is fixedly connected to the upper end of the vertical plate 411. The first bracket 413 is vertically fixedly connected to the upper top wall of the horizontal plate 412, and the first bracket 413 is located at the end closer to the pneumatic cylinder 1. The second bracket 414 is vertically fixedly connected to the lower bottom wall of the horizontal plate 412, and the second bracket 414 is located at the end farther away from the pneumatic cylinder 1. The adjustment component 42 is provided in two sets, including a first adjustment component 4201 and a second adjustment component 4202. The first adjustment component 4201 is mounted on the first bracket 413, and the second adjustment component 4202 is mounted on the second bracket 414. Both the first adjustment assembly 4201 and the second adjustment assembly 4202 are equipped with a distance sensor 43. The distance sensor 43 on the first adjustment assembly 4201 is used to detect the length of the first piston rod 2 extending from the pneumatic cylinder 1, and the distance sensor 43 on the second adjustment assembly 4202 is used to detect the length of the second piston rod 3 extending from the pneumatic cylinder 1.

[0031] Reference Figures 2-4 This embodiment uses a first adjustment component 4201 mounted on a first bracket 413 as an example. The first adjustment component 4201 includes a slide rail 421, a mounting component 422, and an adjustment component 45. The first bracket 413 is a rectangular frame, with one end of the first bracket 413 fixedly connected to a horizontal plate 412 along its length direction. The length direction of the first bracket 413 is also perpendicular to the axis of the first piston rod 2. The slide rail 421 is fixedly connected to the first bracket 413, and the axis of the slide rail 421 is parallel to the length direction of the first bracket 413. In this embodiment, the mounting component 422 is an inverted L-shaped plate, with its horizontal section slidably connected to the slide rail 421. A distance sensor 43 is mounted on the vertical section of the mounting component 422, with a measuring probe 431 fixedly connected to one end of the distance sensor 43, the measuring probe 431 facing the first detection ring 22. The distance detection component 4 also includes a display (not shown in the figure), and the distance sensor 43 is connected to the display via a lead wire. In this embodiment, the ranging sensor 43 is a laser ranging sensor. The working principle of the laser ranging sensor is: to emit a laser beam and calculate the distance by measuring the time it takes for the laser to reflect back after hitting the target object. Laser ranging sensors are existing technology and will not be described in detail here.

[0032] Reference Figures 2-4The adjusting component 45 is mounted on the first bracket 413. In this embodiment, the adjusting component 45 is an adjusting screw, which is rotatably connected to the first bracket 413. The transverse section on the mounting component 422 is also threaded onto the adjusting screw. One end of the adjusting screw is fixedly connected to an adjusting knob 451. Different sizes of cylinders result in different diameters of the detection ring. To ensure that the distance detection assembly 4 can be used with cylinders of different sizes, the position of the distance sensor 43 on the first bracket 413 is adjusted by the adjusting screw, aligning the measuring probe 431 on the distance sensor 43 with the side wall of the first detection ring 22.

[0033] Reference Figures 2-4 The ranging sensor 43 has an external thread on its circumferential sidewall, and the mounting member 422 has a mounting hole 4221 on its vertical section. The ranging sensor 43 is connected to the vertical section of the mounting member 422 via a positioning member 44. The positioning member 44 includes a first nut 441 and a second nut 442, the outer diameter of which is larger than the inner diameter of the mounting hole 4221. The ranging sensor 43 is mounted on the vertical section of the mounting member 422 via the first nut 441 and the second nut 442. Specifically, first, the first nut 441 is screwed into the distance sensor 43 from one end with the measuring probe 431 to the other. Then, the distance sensor 43 with the first nut 441 screwed in is moved from the first bracket 413 towards the mounting member 422 until the end of the distance sensor 43 with the measuring probe 431 passes through the mounting hole 4221 and one end of the first nut 441 is pressed against the vertical section of the mounting member 422. Next, the second nut 442 is screwed into the distance sensor 43 from one end with the measuring probe 431 to the other, until one end of the second nut 442 is pressed against the vertical section of the mounting member 422. Simultaneously, the distance between the end of the distance sensor 43 with the measuring probe 431 and the first detection ring 22 can be adjusted using the first nut 441 and the second nut 442.

[0034] The implementation principle of a cylinder with position detection function in this application embodiment is as follows: When the pneumatic cylinder 1 drives the first piston rod 2 and the second piston rod 3 to reciprocate, the connecting rod 21 fixed to the first piston rod 2 drives the first detection ring 22 to move synchronously, and the second piston rod 3 drives the second detection ring 31 to move synchronously. The two distance sensors 43 installed in the distance detection assembly 4 work respectively: the distance sensor 43 on the first adjustment assembly 4201 emits a detection signal towards the first detection ring 22 through its measuring probe 431 and receives its reflected signal, and detects the displacement of the first detection ring 22 relative to the corresponding end face of the pneumatic cylinder 1 in real time. This displacement represents the extension length of the first piston rod 2; the distance sensor 43 on the second adjustment assembly 4202 emits a detection signal towards the second detection ring 31 through its measuring probe 431 and receives its reflected signal, and detects the displacement of the second detection ring 31 relative to the opposite end face of the pneumatic cylinder 1 in real time. This displacement represents the extension length of the second piston rod 3.

[0035] The two ranging sensors 43 transmit their detected displacement data to a display for real-time display via leads. To accommodate cylinders of different sizes, the adjusting screw can be driven to rotate by rotating the adjusting knobs 451 of the first adjusting component 4201 and the second adjusting component 4202. This, in turn, moves the mounting piece 422 along the slide rail 421 to adjust the position of the corresponding ranging sensor 43, ensuring that its measuring probe 431 is axially aligned with the corresponding detection ring. Simultaneously, by tightening or loosening the first nut 441 and the second nut 442 of the positioning piece 44, the distance between the measuring probe 431 of the ranging sensor 43 and the corresponding detection ring can be adjusted, ensuring effective reception of the detection signal.

[0036] This solution utilizes a non-contact distance detection method, employing two independent distance sensors 43 to acquire displacement data of the detection rings at the ends of the two piston rods, thereby achieving synchronous and real-time position monitoring of the extension length of the two piston rods.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cylinder with position detection function, characterized in that: It includes a pneumatic cylinder (1), a first piston rod (2), a second piston rod (3), and a distance detection component (4); The first piston rod (2) and the second piston rod (3) are telescopically mounted on the pneumatic cylinder (1). The first piston rod (2) is connected to a first detection ring (22), and the second piston rod (3) is connected to a second detection ring (31). The distance detection component (4) is mounted on the pneumatic cylinder (1), and the distance detection component (4) is used to detect the length of the first piston rod (2) and the second piston rod (3) extending out of the pneumatic cylinder (1); The distance detection component (4) includes a support frame (41) and an adjustment component (42). The support frame (41) is connected to the pneumatic cylinder (1), and the adjustment component (42) is mounted on the support frame (41). The adjustment component (42) is provided in two sets, including a first adjustment component (4201) and a second adjustment component (4202). Both sets of adjustment components (42) are equipped with distance sensors (43), and each distance sensor (43) is connected to a measuring probe (431). The first adjustment component (4201) is used to adjust the measuring probe (431) on its own distance sensor (43) to align with the first detection ring (22). The second adjustment component (4202) is used to adjust the measuring probe (431) on its own distance sensor (43) to align with the second detection ring (31).

2. A cylinder with position detection function according to claim 1, characterized in that: The support frame (41) includes a first bracket (413) and a second bracket (414), the first adjustment component (4201) is mounted on the first bracket (413), and the second adjustment component (4202) is mounted on the second bracket (414).

3. A cylinder with position detection function according to claim 1, characterized in that: The adjustment assembly (42) includes a slide rail (421), a mounting component (422), and an adjustment component (45). The slide rail (421) is connected to the support frame (41). The mounting component (422) is slidably connected to the slide rail (421). The distance sensor (43) is connected to the mounting component (422). The adjustment component (45) is connected to the support frame (41) and is also connected to the mounting component (422). The adjustment component (45) is used to adjust the position of the distance sensor (43) on the support frame (41).

4. A cylinder with position detection function according to claim 3, characterized in that: The ranging sensor (43) is connected to the mounting component (422) via a positioning component (44).

5. A cylinder with position detection function according to claim 4, characterized in that: The positioning component (44) includes a first nut (441) and a second nut (442). The mounting component (422) has a mounting hole (4221). One end of the measuring probe (431) of the ranging sensor (43) passes through the mounting hole (4221). The first nut (441) is threaded onto the ranging sensor (43) and located on one side of the mounting (422), and the second nut (442) is connected onto the ranging sensor (43) and located on the other side of the mounting (422).

6. A cylinder with position detection function according to claim 1, characterized in that: The distance detection component (4) also includes a display, and the distance sensor (43) is connected to the display via leads.

7. A cylinder with position detection function according to claim 1, characterized in that: A connecting rod (21) is connected between the first piston rod (2) and the first detection ring (22). One end of the connecting rod (21) is connected to the first piston rod (2), and the other end of the connecting rod (21) is close to the second detection ring (31) and connected to the first detection ring (22).

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