Gas detection oil cylinder

Abstract

The utility model discloses a gas detection oil cylinder which comprises an oil cylinder body, the oil cylinder body comprises an oil cylinder body and a piston rod, a clamping pressing plate is fixedly arranged on the piston rod, and the gas detection oil cylinder has the advantages that a gas detection mechanism is arranged between the clamping pressing plate and the oil cylinder body; the gas detection mechanism comprises a gas detection rod and a gas detection seat, the gas detection rod is provided with a through gas channel, the gas detection rod is arranged on the cylinder body of the oil cylinder, the gas detection seat is provided with a sealing head which can be used for sealing a gas outlet of the gas channel, and the gas detection seat is connected to the clamping pressing plate and can synchronously and telescopically move in the axial direction along with the clamping pressing plate under the driving of the piston rod. The gas detection oil cylinder has the advantages that the structure is simple, the gas detection rod with the gas channel is arranged on the oil cylinder body and matched with the end socket synchronously moving along with the piston rod, the gas detection function of the oil cylinder is achieved, and whether the oil cylinder conducts clamping action or not and whether a workpiece is pressed or not can be accurately judged in cooperation with monitoring of the pressure value on the gas channel for external gas supply.

Description

Technical Field

[0001] This utility model relates to a hydraulic cylinder, and more particularly to a pneumatic detection hydraulic cylinder. Background Technology

[0002] Currently, to prevent machine tool collisions caused by hydraulic cylinder malfunctions and failure to clamp during the use of machining fixtures, it is necessary to design a structure that can identify whether the hydraulic cylinder is clamped. The traditional approach is to use an air detection method. This typically involves adding an air detection device next to the fixture's positioning surface. The device's air detection port is checked for closure after the workpiece's positioning surface contacts the fixture's positioning surface, and the change in air pressure is observed to determine whether the hydraulic cylinder is clamped. This approach requires dedicated space for the air detection device, resulting in a complex fixture structure. It also requires high workpiece positioning accuracy; even slight deviations can lead to inaccurate detection and misjudgments. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a gas detection cylinder with a simple structure and built-in gas detection function.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A pneumatic detection cylinder includes a cylinder body, the cylinder body including a cylinder body and a piston rod that is axially telescopically mounted on the cylinder body, a clamping plate is fixedly mounted on the piston rod, and a pneumatic detection mechanism is provided between the clamping plate and the cylinder body.

[0006] The gas detection mechanism includes a gas detection rod and a gas detection seat. The gas detection rod has an axially extending air passage and is mounted on the cylinder body of the hydraulic cylinder. The gas detection seat is provided with a sealing head for sealing the air outlet of the air passage. The gas detection seat is connected to the clamping plate and can move synchronously along the axial direction with the clamping plate under the action of the piston rod. When the hydraulic cylinder body performs a clamping action, the piston rod retracts, causing the clamping plate to press against the clamping surface of the workpiece. The gas detection seat moves synchronously with the clamping plate. After clamping in place, it causes the sealing head to seal the air outlet of the air passage.

[0007] The cylinder body is provided with an axially penetrating mounting hole for the air detector rod to be inserted and installed, and the air inlet end of the air detector rod extends out and is located outside the cylinder body.

[0008] The cylinder body is detachably and fixedly mounted on a cylinder seat. The cylinder seat has an insertion hole at the installation position corresponding to the air detector rod. The air inlet end of the air detector rod is tightly fitted and sealed into the insertion hole. The cylinder seat has an air supply channel. The air outlet of the air supply channel is sealed and connected to the insertion hole. The air inlet of the air supply channel is used to connect to external gas.

[0009] The air detector seat is detachably mounted on the side of the clamping plate.

[0010] The gas detector seat has an axially extending mounting cavity at the position corresponding to the gas detector rod. The mounting cavity, facing the gas detector rod, consists of a coaxially arranged mounting portion and a guide portion. The inner diameter of the mounting portion is larger than the inner diameter of the guide portion. The end cap includes a guide member that mates with the guide portion. A rubber block is detachably fitted onto the guide member to form a sealing portion. The guide member is movably disposed within the guide portion. The sealing portion extends outwards towards the gas detector rod. A limiting plate is connected to the guide member. The outer diameter of the limiting plate is larger than the inner diameter of the guide portion. The limiting plate is disposed within the mounting portion. A set nut is screwed onto the port of the mounting portion. A spring is disposed within the mounting portion, between the set nut and the limiting plate.

[0011] The inner diameter of the air outlet of the air passage is smaller than the inner diameter of the air inlet of the air passage.

[0012] A piston is coaxially mounted on the piston rod, and the piston is telescopically movable and rotatably mounted inside the cylinder body.

[0013] Compared with the prior art, the advantages of this utility model are: simple structure, by setting an air detection rod with an air passage on the cylinder body and cooperating with the end cap that moves synchronously with the piston rod, the cylinder can realize the air detection function. In conjunction with monitoring the pressure value on the external air supply line, it can accurately determine whether the cylinder is performing a clamping action and whether the workpiece is pressed. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention in the clamped state;

[0015] Figure 2 This is a cross-sectional view of the present invention in the clamped state;

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention in the released and rotated avoidance state. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] As shown in the figure, a pneumatic detection cylinder includes a cylinder body, which includes a cylinder body 1 and a piston rod 2 that can be axially telescopically mounted on the cylinder body 1. A clamping plate 3 is fixedly mounted on the piston rod 2, and a pneumatic detection mechanism is provided between the clamping plate 3 and the cylinder body.

[0019] The air detection mechanism includes an air detection rod 4 and an air detection seat 5. The air detection rod 4 has an axially extending air passage 41 and is mounted on the cylinder body 1. The air detection seat 5 is equipped with a sealing head 7 that can be used to seal the air outlet of the air passage 41. The air detection seat 5 is connected to the clamping plate 3 and can move synchronously along the axial direction with the clamping plate 3 under the drive of the piston rod 2. When the cylinder body performs a clamping action, the piston rod 2 retracts, driving the clamping plate 3 to press against the clamping surface of the workpiece. The air detection seat 5 moves synchronously with the clamping plate 3. After clamping in place, it drives the sealing head 7 to seal the air outlet of the air passage 41.

[0020] In this specific embodiment, the cylinder body 1 is provided with an axially penetrating mounting hole 11 for the air detection rod 4 to extend into and be installed. The air detection rod 4 extends into and is installed in the mounting hole 11, with the air inlet end of the air detection rod 4 protruding outside the cylinder body 1. This design offers good versatility, eliminating the need for special customization of ordinary cylinders. Only the mounting hole 11 for installing the air detection rod 4 needs to be machined on the cylinder body 1, resulting in low machining difficulty and low operating costs.

[0021] In this specific embodiment, the cylinder body 1 is detachably and fixedly mounted on a cylinder seat 6. The cylinder seat 6 has an insertion hole 61 at the mounting position corresponding to the air sensor rod 4. The air inlet end of the air sensor rod 4 is tightly fitted and sealed into the insertion hole 61. An air supply channel 62 is provided inside the cylinder seat 6. The outlet of the air supply channel 62 is sealed and connected to the insertion hole 61, and the inlet of the air supply channel 62 is used to access external gas. The cylinder seat 6 provides a stable mounting position for the cylinder body and simultaneously achieves stable installation of the air sensor rod 4. By supplying air through an external air path and monitoring the air pressure value of the external air path, the stability of the air pressure value can determine whether the cylinder has performed a clamping action and whether it is clamped in place.

[0022] In this specific embodiment, the air supply channel 62 is an extension of the insertion hole 61. This facilitates processing.

[0023] In this specific embodiment, the air detector seat 5 is detachably mounted on the side of the clamping plate 3. When different clamping plates 3 are required for different workpieces, only the clamping plate 3 needs to be replaced, without replacing the entire component. Furthermore, if one part, such as the air detector seat 5, is damaged, it is not necessary to remove the entire part from the hydraulic cylinder. The clamping plate 3 can still be used normally without affecting temporary production in the workshop.

[0024] In this specific embodiment, the gas detector seat 5 is provided with an axially penetrating mounting cavity 51 at the position corresponding to the gas detector rod 4. The mounting cavity 51 has a coaxially arranged mounting part 511 and guide part 512 in the direction facing the gas detector rod 4. The inner diameter of the mounting part 511 is larger than the inner diameter of the guide part 512. The end cap 7 includes a guide member 71 that cooperates with the guide part 512. A rubber pressure block 72 is detachably sleeved on the guide member 71 to form a sealing part. The guide member 71 is movably disposed in the guide part 512. The sealing part extends outward toward the gas detector rod 4. A limiting piece 73 is connected to the guide member 71. The outer diameter of the limiting piece 73 is larger than the inner diameter of the guide part 512. The limiting piece 73 is disposed in the mounting part 511. A set nut 52 is screwed onto the port of the mounting part 511. A spring 8 is disposed in the mounting part 511. The spring 8 is disposed between the set nut 52 and the limiting piece 73. A rubber pressure block 72 is used to seal the air outlet of the gas detector rod 4, ensuring that there is no rigid collision between the end cap 7 and the gas detector rod 4. This prevents damage to the gas detector rod 4 due to rigid impact during sealing. A spring 8 pushes the sealing part outward, forming a buffer and reducing damage. In addition, the limiting piece 73 is used to position the end cap 7 during installation, preventing it from falling out of the gas detector seat 5 due to gravity, thus achieving stable installation.

[0025] In this specific embodiment, the inner diameter of the air outlet of the air passage 41 is smaller than the inner diameter of the air inlet of the air passage 41. This facilitates the end cap 7 in better sealing the air outlet of the air passage 41.

[0026] In this specific embodiment, a piston 21 is coaxially mounted on the piston rod 2. The piston 21 is telescopically movable and rotatably mounted inside the cylinder body 1. This facilitates the loading and unloading of workpieces and allows the corresponding position to be cleared when not in use.

[0027] The movement stroke of the clamping plate 3 and the end cap 7 is preset according to the specific clamping situation of the workpiece. When the hydraulic cylinder can be used normally, it first drives the clamping plate 3 to rotate above the workpiece. At this time, the end cap 7 is aligned and set directly above the air detection rod 4. Then the piston rod 2 retracts, and the clamping plate 3 is pressed onto the corresponding clamping surface of the workpiece and pressed tightly. The end cap 7 is pressed on the air detection rod 4, sealing the air outlet of the air passage 41. At this time, by detecting the pressure value on the external air line, if the pressure value does not change within a period of time, it indicates that the hydraulic cylinder has performed the clamping work normally and pressed the workpiece tightly. If the pressure value keeps changing within a period of time, it indicates that there is air leakage, indicating that the pressing is not in place.

Claims

1. A pneumatic detection cylinder, comprising a cylinder body, the cylinder body including a cylinder body and a piston rod axially telescopically mounted on the cylinder body, wherein a clamping plate is fixedly mounted on the piston rod, characterized in that... An air detection mechanism is provided between the clamping plate and the cylinder body; The gas detection mechanism includes a gas detection rod and a gas detection seat. The gas detection rod has an axially extending air passage and is mounted on the cylinder body of the hydraulic cylinder. The gas detection seat is provided with a sealing head for sealing the air outlet of the air passage. The gas detection seat is connected to the clamping plate and can move synchronously along the axial direction with the clamping plate under the action of the piston rod. When the hydraulic cylinder body performs a clamping action, the piston rod retracts, causing the clamping plate to press against the clamping surface of the workpiece. The gas detection seat moves synchronously with the clamping plate. After clamping in place, it causes the sealing head to seal the air outlet of the air passage.

2. The pneumatic detection cylinder as described in claim 1, characterized in that... The cylinder body is provided with an axially penetrating mounting hole for the air detector rod to be inserted and installed. The air detector rod is inserted and installed in the mounting hole, and the air inlet end of the air detector rod extends out and is located outside the cylinder body.

3. A pneumatic detection cylinder as described in claim 2, characterized in that... The cylinder body is detachably and fixedly mounted on a cylinder seat. The cylinder seat has an insertion hole at the installation position corresponding to the air detector rod. The air inlet end of the air detector rod is tightly fitted and sealed into the insertion hole. The cylinder seat has an air supply channel. The air outlet of the air supply channel is sealed and connected to the insertion hole. The air inlet of the air supply channel is used to connect to external gas.

4. A pneumatic detection cylinder as described in claim 1, characterized in that... The air detector seat is detachably mounted on the side of the clamping plate.

5. A pneumatic detection cylinder as described in claim 1, characterized in that... The gas detector seat has an axially extending mounting cavity at the position corresponding to the gas detector rod. The mounting cavity, facing the gas detector rod, consists of a coaxially arranged mounting portion and a guide portion. The inner diameter of the mounting portion is larger than the inner diameter of the guide portion. The end cap includes a guide member that mates with the guide portion. A rubber block is detachably fitted onto the guide member to form a sealing portion. The guide member is movably disposed within the guide portion. The sealing portion extends outwards towards the gas detector rod. A limiting plate is connected to the guide member. The outer diameter of the limiting plate is larger than the inner diameter of the guide portion. The limiting plate is disposed within the mounting portion. A set nut is screwed onto the port of the mounting portion. A spring is disposed within the mounting portion, between the set nut and the limiting plate.

6. A pneumatic detection cylinder as described in claim 1, characterized in that... The inner diameter of the air outlet of the air passage is smaller than the inner diameter of the air inlet of the air passage.

7. A pneumatic detection cylinder as described in claim 1, characterized in that... A piston is coaxially mounted on the piston rod, and the piston is telescopically movable and rotatably mounted inside the cylinder body.

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