Linear oil cylinder detection device

Abstract

The invention relates to a linear oil cylinder detection device which comprises a base, a support, a pressing piece and a supporting piece. The bracket is arranged on the base; the pressing piece is arranged on the bracket; the acting ends of the pressing pieces face the upper portion and the side wall of the workpiece correspondingly. The supporting piece is arranged on the base; a detection device is arranged on the pressing piece; and the detection device corresponds to the extending end of the pressing piece. The problem that no linear oil cylinder with the pressing and loosening detection function exists, and detection of the state of the linear oil cylinder is undoubtedly a tool clamp using the linear oil cylinder in automatic production is solved.

Description

Technical Field

[0001] This invention relates to the field of automation, and more particularly to a linear hydraulic cylinder detection device. Background Technology

[0002] In existing technologies, tooling fixtures are indispensable end-effectors in automated production lines, machining centers, and industrial robot applications. They are key to achieving automatic workpiece identification, positioning, clamping, and transfer. Among these, the "clamping / loosening detection" of tooling fixtures is no longer an option but a crucial core function. It is not only the foundation for automation but also a critical link in ensuring the safe, reliable, and efficient operation of the entire production system.

[0003] This invention application, CN222913081U, relates to the field of hydraulic cylinder testing technology and discloses a hydraulic cylinder clamping testing mechanism. The mechanism includes a base plate, on which a hydraulic cylinder body is fixedly mounted on the left side of the top outer surface. A pressure plate is provided at the output end of the hydraulic cylinder body. A first sheet metal part is provided on the left side of the top outer surface of the base plate near the front end, and a first proximity switch is mounted on the outer surface of the first sheet metal part. A second sheet metal part is provided at the center of the top outer surface of the base plate near the rear end, and a second proximity switch is mounted on the outer surface of the second sheet metal part. Four positioning holes each contain a pin, and a workpiece is positioned at the center of the four pins. This hydraulic cylinder clamping testing mechanism, by using the first and second proximity switches to detect the position of the pressure plate in both the relaxed and clamped states of the workpiece, can more directly detect the position of the pressure plate, avoiding incorrect detection positions and thus achieving accurate testing results.

[0004] However, its proximity switch is located outside the cylinder, which greatly increases the manufacturing cost and the required installation space, thus increasing the difficulty of manufacturing. Furthermore, linear cylinders with clamping / releasing detection are currently unavailable. For tooling fixtures using linear cylinders in automated production, detecting the status of the linear cylinders is undoubtedly a major challenge. Summary of the Invention

[0005] This application provides a linear hydraulic cylinder detection device, which solves the problem that there is currently no linear hydraulic cylinder with clamping and loosening detection in the prior art. For tooling fixtures that use linear hydraulic cylinders in automated production, detecting the state of the linear hydraulic cylinder is undoubtedly a major problem.

[0006] The technical solutions adopted in the embodiments of this application are as follows.

[0007] A linear hydraulic cylinder testing device includes a base, a bracket, a clamping member, and a supporting member; the bracket is disposed on the base; the clamping member is disposed on the bracket; the working ends of the clamping member face the top and side wall of the workpiece respectively; the supporting member is disposed on the base; a testing device is disposed on the clamping member; the testing device corresponds to the protruding end of the clamping member.

[0008] As a further improvement to the above technical solution: The detection device includes a gas detector seat, a pin, an elastic element, and a gasket; the gas detector seat has a first through hole; the pin slides within the first through hole; a groove is formed at the bottom of the pin; the elastic element is located within the groove; one end of the elastic element abuts against the groove, and the other end abuts against the gasket; the protruding end of the clamping member is a pressure rod; the end of the pin away from the elastic element abuts against the side wall of the pressure rod; a sliding groove is formed on the side wall of the pressure rod; the gasket is disposed on the gas detector seat.

[0009] The end face of the pin is spherical.

[0010] A limiting plate is provided at one end of the pin facing the elastic element; a second through hole is provided at one end of the first through hole facing the limiting plate; the diameter of the second through hole is larger than that of the first through hole; the limiting plate slides within the second through hole; a first groove is provided between the limiting plate and the pin; the diameter of the first groove is smaller than that of the pin; a second groove is provided on the pin; the second groove connects the slot and the first groove.

[0011] The air detector base is provided with a ventilation groove; the ventilation groove is connected to the first through hole.

[0012] The end face of the pressure rod on the upper clamping member is provided with a connecting block; the two ends of the connecting block are respectively provided with a first block and a second block; the first block is provided with an arc groove; the second block is provided with a serrated groove; the arc groove and the serrated groove are perpendicular to each other.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. The device employs a portal-shaped bracket and two sets of vertically distributed cylinder clamping components, forming a multi-directional positioning structure with supporting components. This applies a fixing force to the workpiece from above and the lower right side, ensuring the linear hydraulic cylinder does not shift during testing and solving the detection deviation problem caused by loosening in traditional single-direction positioning. The detection device precisely matches the side wall of the pressure rod, utilizing the fitting design of the pin's spherical end face and the slide groove. When the pressure rod moves to the preset position, the pin is engaged in the slide groove under the action of the elastic element. Simultaneously, air pressure change feedback is achieved through the air passage connecting the air passage with the first and second grooves. If the workpiece positioning is abnormal or there is a dimensional deviation, the pressure rod cannot drive the slide groove to the designated position, the pin remains retracted, and the air pressure in the air passage is not released. This integrated design of mechanical structure and air passage detection can quickly and accurately determine the position of the pressure rod, thereby reflecting the workpiece clamping status and dimensional accuracy, significantly improving the detection accuracy and meeting the high-precision detection requirements of linear hydraulic cylinders.

[0014] 2. Due to the spherical design of the pin facing the pressure rod, the friction when in contact with the side wall of the pressure rod is significantly reduced, preventing jamming during pressure rod movement and reducing component wear. The pre-compression structure of the elastic element (spring) not only ensures that the pin remains in contact with the side wall of the pressure rod, but also absorbs impact force through elastic deformation during pressure rod movement, achieving buffer protection and preventing damage to the pin and pressure rod from rigid contact. In addition, the fit between the limiting plate and the second through hole strictly limits the sliding stroke of the pin, preventing structural damage caused by excessive displacement, further ensuring the stability of equipment operation, extending the overall service life, and reducing equipment maintenance costs.

[0015] 3. By linking the ventilation channel with external air pressure detection equipment, the detection process can be automated. Operators no longer need to manually observe or measure the pressure bar position; they can judge the detection results simply by the air pressure signal, reducing errors and labor intensity caused by manual intervention. This automated detection mode not only simplifies the operation process and reduces the skill requirements for operators, but also links with the production line automation system to achieve full-process collaboration of "positioning-detection-sorting". Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the linear hydraulic cylinder detection device in this invention.

[0017] Figure 2 This is a schematic diagram of the linear hydraulic cylinder detection device in this invention.

[0018] Figure 3 This is an exploded cross-sectional view of the detection device in this invention.

[0019] Figure 4 for Figure 3 A magnified view of part A in the image.

[0020] In the diagram: 1. Base; 2. Bracket; 3. Clamping component; 4. Support component; 5. Detection device; 6. Connecting block; 31. Pressure rod; 311. Slide groove; 51. Air detection seat; 52. Pin; 53. Elastic component; 54. Gasket; 511. First through hole; 512. Second through hole; 513. Vent groove; 521. Slot; 522. Limiting plate; 523. First groove; 524. Second groove; 61. First block; 62. Second block; 611. Arc groove; 621. Serrated groove. Detailed Implementation

[0021] This application provides a linear hydraulic cylinder detection device, which solves the problem that there is currently no linear hydraulic cylinder with clamping and loosening detection in the prior art. For tooling fixtures that use linear hydraulic cylinders in automated production, detecting the state of the linear hydraulic cylinder is undoubtedly a major problem.

[0022] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] The base 1 is a long strip, and the support 2 is a door-shaped structure. The bottom of the support 2 is fixedly connected to the top of the base 1 to form a square shape. A clamping component 3 is provided above the support 2 and on the lower right side of the support 2. The clamping component 3 is a cylinder. The two sets of clamping components 3 are perpendicular to each other. The support component 4 is located at the lower right corner of the base 1. The pushing direction of the two sets of clamping components 3 is towards the support component 4. A detection device 5 is provided on each clamping component 3. The detection end of the detection device 5 corresponds to the side wall of the pressure rod 31 to detect the specific position of the pressure rod 31. A gas detection seat 51 is mounted on the clamping member 3. A first through hole 511 is provided on the gas detection seat 51, and the first through hole 511 is coaxial with the gas detection seat 51. A pin 52 is slidably connected inside the first through hole 511, and the outer wall of the pin 52 contacts the inner wall of the first through hole 511. The side of the pin 52 facing the pressure rod 31 is spherical, thereby reducing friction and preventing jamming when the pressure rod 31 moves. A gasket 54 is fixed to the gas detection seat 51. A second through hole 512 is provided at one end of the first through hole 511, and the diameter of the second through hole 512 is larger than that of the first through hole 511. A limit plate 522 is provided on the end face of the pin 52 located in the second through hole 512. The diameter of the pin 52 corresponds to the second through hole 512. A groove 521 is provided on the pin 52, and the center of the groove 521 corresponds to the center of the pin 52. An elastic element 53 is provided in the groove 521. The elastic element 53 is a spring. One end of the elastic element 53 abuts against the groove 521, and the other end of the elastic element 53 abuts against the washer 54. The elastic element 53 drives the spherical end face of the pin 52 to always abut against the side wall of the pressure rod 31. A sliding groove 311 is provided on the side wall of the pressure rod 31. When the sliding groove 311 and the pin 52 are on the same horizontal plane, the pin 52 is inserted into the sliding groove 311. When the sliding groove 311 is not on the same horizontal plane as the pin 52, the pin 52 retracts, and the elastic element 53 is in a compressed state.

[0024] A limiting plate 522 is provided on the end face of the pin 52. The diameter of the limiting plate 522 corresponds to the diameter of the second through hole 512. A first groove 523 is formed on the side of the pin 52 facing the limiting plate 522. The first groove 523 is arc-shaped and its diameter is smaller than that of the pin 52. A second groove 524 is formed on the first groove 523, penetrating through the first groove 523 and the retaining groove 521. A venting groove 513 is formed on the air detection seat 51, and the venting groove 513 and the retaining groove 521 are connected. When the first through hole 511 is connected, and the side wall of the pin 52 corresponds to the vent groove 513, the air pressure in the vent groove 513 is not released. At this time, the pin 52 corresponds to the side wall of the pressure rod 31, and the elastic element 53 is compressed. When the pressure rod 31 moves up to the point where the pin 52 corresponds to the slide groove 311, the pin 52 moves outward, so that the first groove 523 is connected to the vent groove 513. At this time, the air pressure in the vent groove 513 is released. The specific position of the pin 52 is detected by detecting the air pressure.

[0025] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0026] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A linear oil cylinder detection device, comprising a base (1), a support (2), a pressing part (3) and a supporting part (4); the support (2) is arranged on the base (1); the pressing part (3) is arranged on the support (2); the acting end of the pressing part (3) respectively faces the upper side and the side wall of the workpiece; the supporting part (4) is arranged on the base (1); characterized in that, The detection device (5) is arranged on the pressing piece (3) and corresponds to the extending end of the pressing piece (3).

2. The linear cylinder detection apparatus of claim 1, wherein The detection device (5) comprises a gas detection seat (51), a pin shaft (52), an elastic piece (53) and a gasket (54). The first through hole (511) is arranged on the gas detection seat (51). The pin shaft (52) is arranged in the first through hole (511) and slides. The bottom of the pin shaft (52) is provided with a clamping groove (521). The elastic piece (53) is arranged in the clamping groove (521). One end of the elastic piece (53) abuts against the clamping groove (521), and the other end of the elastic piece (53) abuts against the gasket (54). The extending end of the pressing piece (3) is a pressing rod (31). The end of the pin shaft (52) away from the elastic piece (53) abuts against the side wall of the pressing rod (31). The side wall of the pressing rod (31) is provided with a sliding groove (311). The gasket (54) is arranged on the gas detection seat (51).

3. The linear cylinder detection apparatus of claim 2, wherein The end surface of the pin shaft (52) is spherical.

4. The linear cylinder detection apparatus of claim 2, wherein The end of the pin shaft (52) towards the elastic piece (53) is provided with a limiting plate (522). The first through hole (511) is provided with a second through hole (512) at the end towards the limiting plate (522). The diameter of the second through hole (512) is greater than that of the first through hole (511). The limiting plate (522) slides in the second through hole (512). The first slot (523) is arranged between the limiting plate (522) and the pin shaft (52). The diameter of the first slot (523) is smaller than that of the pin shaft (52). The second slot (524) is arranged on the pin shaft (52). The second slot (524) is connected with the clamping groove (521) and the first slot (523).

5. The linear cylinder detection apparatus of claim 4, wherein The air passage groove (513) is arranged on the gas detection seat (51) and is connected with the first through hole (511).

6. The linear cylinder detection apparatus of claim 2, wherein The end surface of the pressing rod (31) on the pressing piece (3) on the upper side is provided with a connecting block (6). The two ends of the connecting block (6) are respectively provided with a first block (61) and a second block (62). The arc slot (611) is arranged on the first block (61). The sawtooth slot (621) is arranged on the second block (62). The directions of the arc slot (611) and the sawtooth slot (621) are perpendicular.

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