Automatic clamping mechanism with signal detection function
By designing an automatic clamping mechanism with signal detection function, using a cylinder or oil cylinder to drive the clamping rod and combining the ring groove and gas circuit design, automatic clamping and loosening signal detection of hydraulic or pneumatic clamps is realized, solving the problem of high signal detection cost in the prior art, reducing production costs and improving processing safety and stability.
Patent Information
- Application Number
- CN202422144754.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Existing hydraulic or pneumatic clamps cannot effectively transmit electrical signals after clamping or loosening, resulting in difficult to achieve self-locking or interlocking requirements. The oil cylinders or cylinders with their own signal detection function are expensive, increasing the cost of fixtures during the manufacturing process.
An automatic clamping mechanism with signal detection function is designed, including a clamp bottom plate, clamping drive mechanism, clamping seat, clamping rod, connecting plate, pressing plate, clamping in-place detection gas path and loosening in-place detection gas path. The clamping rod is driven up or down by using the cylinder or oil cylinder to drive the clamping rod to rise or fall, and the clamping in-place signal detection is achieved through the design of the ring groove and the gas path, and a pneumatic pressure sensor is equipped to ensure the accurate transmission of the signal.
It realizes convenient and reliable detection of clamping and loosening signals of automated tooling, reduces production costs, improves the safety and stability of automated processing, and is suitable for all kinds of hydraulic or pneumatic fixture scenarios.
Smart Images
Figure CN223130480U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of automatic production, and particularly relates to an automatic clamping mechanism with a signal detection function. Background Art
[0002] In machining and manufacturing, intelligent and automatic processing are increasingly required in production. For example, hydraulic and pneumatic fixtures are now widely used in the machining production of mechanical parts because they are more efficient and convenient for clamping workpieces. In an automatic production scenario, signal detection is indispensable. Usually, it is required that the hydraulic or pneumatic fixture can transmit an electrical signal after completing the clamping or loosening action to ensure the self-locking or interlocking requirements. At present, the only way to achieve signal detection on hydraulic cylinders or pneumatic cylinders in the industry is to purchase cylinders with a built-in signal detection function. Such cylinders are often more expensive than those without signal detection, thus increasing the fixture cost in the manufacturing process. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide an automatic clamping mechanism with a signal detection function for the deficiencies of the prior art. This automatic clamping mechanism can be used for various types of cylinders and oil cylinders to achieve signal detection, has a wide application range, is popularizable, has strong applicability, and can be applied to various automatic scenarios with hydraulic or pneumatic fixtures.
[0004] The technical solution adopted by the present utility model to solve the above technical problems is as follows: An automatic clamping mechanism with a signal detection function, comprising a fixture base plate, a clamping drive mechanism, a clamping seat, a clamping rod, a connecting plate, a pressing plate, a clamping-in-place detection air circuit, and a releasing-in-place detection air circuit. The clamping drive mechanism is a cylinder or an oil cylinder for driving the clamping rod to rise or fall. The clamping drive mechanism is installed on the lower side of the fixture base plate. The clamping seat is installed on the upper side of the fixture base plate. A support block with adjustable height is installed on the upper side of the fixture base plate. The support block is used to support the workpiece. The lower end of the clamping rod is coaxially and fixedly connected to the output end of the clamping drive mechanism. The clamping rod vertically penetrates through the clamping seat. The upper end of the clamping rod is connected to the tail end of the pressing plate through a first pin shaft. The middle part of the pressing plate is connected to the upper end of the connecting plate through a second pin shaft. The lower end of the connecting plate is connected to the clamping seat through a third pin shaft. The clamping-in-place detection air circuit and the releasing-in-place detection air circuit are used to detect whether the workpiece is clamped or released by the pressing plate. During the working process, when the clamping drive mechanism drives the clamping rod to rise in place, the clamping rod drives the pressing plate, causing the front end of the pressing plate to move downward and press the workpiece, and the clamping-in-place detection air circuit releases the signal that the workpiece is clamped in place. When the clamping drive mechanism drives the clamping rod to fall in place, the clamping rod drives the pressing plate, causing the front end of the pressing plate to lift and release the workpiece, and the releasing-in-place detection air circuit releases the signal that the workpiece is released in place.
[0005] The automatic clamping mechanism of the present utility model can realize the detection of the clamping and releasing signals of the automatic tooling, ensure the convenience and reliability of the workpiece clamping, ensure the effective and stable use of the automatic processing, improve the safety and stability of the automatic processing, and greatly reduce the production cost.
[0006] The automatic clamping mechanism of the present utility model uses a cylinder or an oil cylinder as the clamping drive mechanism, with low cost. The clamping rod driven by the cylinder or the oil cylinder is only subjected to axial force and not radial force, which can greatly improve the service life of the oil cylinder or the cylinder. The automatic clamping mechanism of the present utility model can be used on various types of cylinders and oil cylinders to realize signal detection, has a wide application range, is popularizable, has strong applicability, and can be applied to various automatic scenarios with hydraulic or pneumatic fixtures.
[0007] In a preferred embodiment, a first pneumatic pressure sensor is provided on the clamping-in-place detection air path, and a second pneumatic pressure sensor is provided on the releasing-in-place detection air path. The front end of the clamping-in-place detection air path is communicated with a first air source, and the front end of the releasing-in-place detection air path is communicated with a second air source. The ends of the clamping-in-place detection air path and the releasing-in-place detection air path are respectively communicated with the atmosphere. A first ring groove and a second ring groove are provided at intervals up and down in the middle of the clamping rod. The first ring groove is used to conduct the clamping-in-place detection air path when the clamping rod rises in place, and the second ring groove is used to conduct the releasing-in-place detection air path when the clamping rod descends in place. The above technical solution realizes the on-off of the clamping-in-place detection air path and the releasing-in-place detection air path according to the stroke of the clamping rod, with a simple structure. Moreover, the first ring groove and the second ring groove can ensure that when the clamping rod is at the two limit positions of its stroke, the clamping-in-place detection air path and the releasing-in-place detection air path can be smoothly conducted, ensuring the stability and reliability of signal detection.
[0008] In a preferred embodiment, the clamping-in-place detection air path includes a first air path, a second air path, and a third air path, and the releasing-in-place detection air path includes a fourth air path, a fifth air path, and a sixth air path. The first air path and the fourth air path are respectively arranged in the fixture base plate. The second air path, the third air path, the fifth air path, and the sixth air path are respectively arranged in the clamping seat. The first air path is communicated with the second air path. The second air path and the third air path are respectively arranged on both sides of the clamping rod. The fourth air path is communicated with the fifth air path. The fifth air path and the sixth air path are respectively arranged on both sides of the clamping rod. A dust cover is provided on the front side of the clamping seat. The dust cover and the front side of the clamping seat enclose a cavity. An exhaust hole communicated with the atmosphere is opened at the bottom of the dust cover. The exhaust hole, the third air path, and the sixth air path are respectively communicated with the cavity. When the clamping rod rises in place, the second air path, the first ring groove, and the third air path are sequentially communicated, so that the clamping-in-place detection air path is conducted, and the first pneumatic pressure sensor releases a signal indicating that the workpiece is clamped in place. When the clamping rod descends in place, the fifth air path, the second ring groove, and the sixth air path are sequentially communicated, so that the releasing-in-place detection air path is conducted, and the second pneumatic pressure sensor releases a signal indicating that the workpiece is released in place. The dust cover can prevent iron filings, dust, and cutting fluid from entering the clamping-in-place detection air path and the releasing-in-place detection air path. The cavity and the exhaust hole can ensure that the clamping-in-place detection air path and the releasing-in-place detection air path are communicated with the atmosphere.
[0009] In a preferred embodiment, a first sealing ring is provided between the clamping rod and the clamping seat. The first sealing ring is located above the clamping-in-place detection air circuit and the releasing-in-place detection air circuit. A second sealing ring is provided at the junction of the first air circuit and the second air circuit, and a third sealing ring is provided at the junction of the fourth air circuit and the fifth air circuit. The functions of the first sealing ring, the second sealing ring, and the third sealing ring are to prevent dust and improve the sealing of the internal gas, ensuring the accuracy of signal detection.
[0010] Compared with the prior art, the present utility model has the following advantages: The automatic clamping mechanism with signal detection function of the present utility model can realize the detection of the clamping and releasing signals of the automatic tooling, ensure the convenience and reliability of workpiece clamping, ensure the effective and stable use of automatic processing, improve the safety and stability of automatic processing, and greatly reduce the production cost. The automatic clamping mechanism of the present utility model can be used for various types of cylinders and oil cylinders to realize signal detection, has a wide application range, is popularizable, has strong applicability, and can be applied to various automatic scenarios with hydraulic or pneumatic fixtures. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic cross-sectional view of the structure when the automatic clamping mechanism in the embodiment clamps the workpiece;
[0012] Figure 2 It is a schematic cross-sectional view of the structure when the automatic clamping mechanism in the embodiment releases the workpiece;
[0013] The specific reference numerals in the drawings are as follows:
[0014] 1 - fixture bottom plate, 11 - support block, 2 - clamping drive mechanism, 3 - clamping seat, 31 - mounting seat, 32 - dust cover, 33 - cavity, 34 - exhaust hole, 35 - first sealing ring, 36 - second sealing ring, 37 - third sealing ring, 4 - clamping rod, 41 - first annular groove, 42 - second annular groove, 5 - connecting plate, 51 - third pin shaft, 6 - pressing plate, 61 - first pin shaft, 62 - second pin shaft, 7 - first pneumatic pressure sensor, 71 - first air circuit, 72 - second air circuit, 73 - third air circuit, 74 - first air source, 8 - second pneumatic pressure sensor, 81 - fourth air circuit, 82 - fifth air circuit, 83 - sixth air circuit, 84 - second air source, 9 - workpiece. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The following further describes the present utility model in detail with reference to the embodiments of the drawings. The structures or components not defined in the present utility model all adopt the conventional technical means in the art.
[0016] The automatic clamping mechanism with signal detection function of the embodiment is as Figure 1 andFigure 2 As shown, it includes a fixture base plate 1, a clamping drive mechanism 2, a clamping seat 3, a clamping rod 4, a connecting plate 5, a pressing plate 6, a clamping-in-place detection air circuit and a releasing-in-place detection air circuit. The clamping drive mechanism 2 is a cylinder or an oil cylinder for driving the clamping rod 4 to rise or fall. The clamping drive mechanism 2 is installed on the lower side of the fixture base plate 1, and the clamping seat 3 is installed on the upper side of the fixture base plate 1. A support block 11 with adjustable height is installed on the upper side of the fixture base plate 1, and the support block 11 is used to support the workpiece 9. The lower end of the clamping rod 4 is coaxially and fixedly connected to the output end of the clamping drive mechanism 2. The clamping rod 4 vertically passes through the clamping seat 3. The upper end of the clamping rod 4 is connected to the tail end of the pressing plate 6 through a first pin shaft 61, and the middle part of the pressing plate 6 is connected to the upper end of the connecting plate 5 through a second pin shaft 62. An installation seat 31 is fixed at the top of the clamping seat 3, and the lower end of the connecting plate 5 is connected to the installation seat 31 through a third pin shaft 51. The clamping-in-place detection air circuit and the releasing-in-place detection air circuit are used to detect whether the workpiece 9 is clamped or released by the pressing plate 6.
[0017] In this embodiment, a first pneumatic pressure sensor 7 is provided on the clamping-in-place detection air path, and a second pneumatic pressure sensor 8 is provided on the releasing-in-place detection air path. The front end of the clamping-in-place detection air path is connected to a first air source 74, and the front end of the releasing-in-place detection air path is communicated with a second air source 84. The ends of the clamping-in-place detection air path and the releasing-in-place detection air path are respectively communicated with the atmosphere. A first annular groove 41 and a second annular groove 42 are provided at intervals up and down in the middle of the clamping rod 4. The first annular groove 41 is used to conduct the clamping-in-place detection air path when the clamping rod 4 rises in place, and the second annular groove 42 is used to conduct the releasing-in-place detection air path when the clamping rod 4 descends in place. Specifically, the clamping-in-place detection air path includes a first air path 71, a second air path 72, and a third air path 73, and the releasing-in-place detection air path includes a fourth air path 81, a fifth air path 82, and a sixth air path 83. The first air path 71 and the fourth air path 81 are respectively arranged in the fixture base plate 1, and the second air path 72, the third air path 73, the fifth air path 82, and the sixth air path 83 are respectively arranged in the clamping seat 3. The first air path 71 is communicated with the second air path 72. The second air path 72 and the third air path 73 are respectively arranged on both sides of the clamping rod 4. The fourth air path 81 is communicated with the fifth air path 82. The fifth air path 82 and the sixth air path 83 are respectively arranged on both sides of the clamping rod 4. A dust cover 32 is covered on the front side of the clamping seat 3. The dust cover 32 and the front side of the clamping seat 3 enclose a cavity 33. An exhaust hole 34 communicated with the atmosphere is opened at the bottom of the dust cover 32. The exhaust hole 34, the third air path 73, and the sixth air path 83 are respectively communicated with the cavity 33. When the clamping rod 4 rises in place, the second air path 72, the first annular groove 41, and the third air path 73 are sequentially communicated, so that the clamping-in-place detection air path is conducted, and the first pneumatic pressure sensor 7 releases a signal that the workpiece 9 is clamped in place; when the clamping rod 4 descends in place, the fifth air path 82, the second annular groove 42, and the sixth air path 83 are sequentially communicated, so that the releasing-in-place detection air path is conducted, and the second pneumatic pressure sensor 8 releases a signal that the workpiece 9 is released in place. A first sealing ring 35 is arranged between the clamping rod 4 and the clamping seat 3. The first sealing ring 35 is located above the clamping-in-place detection air path and the releasing-in-place detection air path. A second sealing ring 36 is arranged at the connection between the first air path 71 and the second air path 72, and a third sealing ring 37 is arranged at the connection between the fourth air path 81 and the fifth air path 82.
[0018] During the working process, when the clamping driving mechanism 2 drives the clamping rod 4 to rise in place, the clamping rod 4 drives the pressing plate 6, so that the front end of the pressing plate 6 moves downward and presses the workpiece 9. At the same time, the second air path 72, the first annular groove 41, and the third air path 73 are sequentially communicated. The state diagram at this time is as shown in Figure 1 shown, so that the clamping-in-place detection air path is conducted, and the first pneumatic pressure sensor 7 releases a signal that the workpiece 9 is clamped in place; when the clamping driving mechanism 2 drives the clamping rod 4 to descend in place, the clamping rod 4 drives the pressing plate 6, so that the front end of the pressing plate 6 moves upward and releases the workpiece 9. At the same time, the fifth air path 82, the second annular groove 42, and the sixth air path 83 are sequentially communicated. The state diagram at this time is as shown inFigure 2 As shown, the loosening detection air circuit is connected, and the second pneumatic pressure sensor 8 releases a signal that the workpiece 9 is loosened into place.
Claims
1. An automatic clamping mechanism with signal detection function, characterized in that It includes a fixture base plate, a clamping drive mechanism, a clamping seat, a clamping rod, a connecting plate, a pressing plate, a clamping-in-place detection air circuit and a releasing-in-place detection air circuit. The clamping drive mechanism is a cylinder or an oil cylinder for driving the clamping rod to rise or fall. The clamping drive mechanism is installed on the lower side of the fixture base plate. The clamping seat is installed on the upper side of the fixture base plate. A support block with adjustable height is installed on the upper side of the fixture base plate. The support block is used to support the workpiece. The lower end of the clamping rod is coaxially and fixedly connected to the output end of the clamping drive mechanism. The clamping rod vertically penetrates through the clamping seat. The upper end of the clamping rod is connected to the tail end of the pressing plate through a first pin shaft. The middle part of the pressing plate is connected to the upper end of the connecting plate through a second pin shaft. The lower end of the connecting plate is connected to the clamping seat through a third pin shaft. The clamping-in-place detection air circuit and the releasing-in-place detection air circuit are used to detect whether the workpiece is clamped or released by the pressing plate. During the working process, when the clamping drive mechanism drives the clamping rod to rise in place, the clamping rod drives the pressing plate, causing the front end of the pressing plate to move downward and press the workpiece, and the clamping-in-place detection air circuit releases the signal of the workpiece being clamped in place. When the clamping drive mechanism drives the clamping rod to fall in place, the clamping rod drives the pressing plate, causing the front end of the pressing plate to lift upward and release the workpiece, and the releasing-in-place detection air circuit releases the signal of the workpiece being released in place.
2. The automatic clamping mechanism with a signal detection function according to claim 1, characterized in that, A first pneumatic pressure sensor is provided on the clamping-in-place detection air circuit. A second pneumatic pressure sensor is provided on the releasing-in-place detection air circuit. The front end of the clamping-in-place detection air circuit is communicated with a first air source. The front end of the releasing-in-place detection air circuit is communicated with a second air source. The ends of the clamping-in-place detection air circuit and the releasing-in-place detection air circuit are respectively communicated with the atmosphere. A first annular groove and a second annular groove are provided at intervals up and down in the middle of the clamping rod. The first annular groove is used to conduct the clamping-in-place detection air circuit when the clamping rod rises in place. The second annular groove is used to conduct the releasing-in-place detection air circuit when the clamping rod falls in place.
3. The automatic clamping mechanism with a signal detection function according to claim 2, characterized in that, The described clamping-in-place detection air circuit includes a first air circuit, a second air circuit, and a third air circuit. The described releasing-in-place detection air circuit includes a fourth air circuit, a fifth air circuit, and a sixth air circuit. The first air circuit and the fourth air circuit are respectively arranged inside the fixture bottom plate. The second air circuit, the third air circuit, the fifth air circuit, and the sixth air circuit are respectively arranged inside the clamping seat. The first air circuit is communicated with the second air circuit. The second air circuit and the third air circuit are respectively arranged on both sides of the clamping rod. The fourth air circuit is communicated with the fifth air circuit. The fifth air circuit and the sixth air circuit are respectively arranged on both sides of the clamping rod. A dust-proof cover is provided on the front side of the clamping seat. The dust-proof cover and the front side of the clamping seat enclose a cavity. An exhaust hole communicating with the atmosphere is opened at the bottom of the dust-proof cover. The exhaust hole, the third air circuit, and the sixth air circuit are respectively communicated with the cavity. When the clamping rod rises in place, the second air circuit, the first annular groove, and the third air circuit are sequentially communicated, so that the clamping-in-place detection air circuit is conducted, and the first pneumatic pressure sensor releases a signal that the workpiece is clamped in place. When the clamping rod descends in place, the fifth air circuit, the second annular groove, and the sixth air circuit are sequentially communicated, so that the releasing-in-place detection air circuit is conducted, and the second pneumatic pressure sensor releases a signal that the workpiece is released in place.
4. An automatic clamping mechanism with a signal detection function according to claim 3, characterized in that, A first sealing ring is arranged between the clamping rod and the clamping seat. The first sealing ring is located above the clamping-in-place detection air circuit and the releasing-in-place detection air circuit. A second sealing ring is arranged at the connection between the first air circuit and the second air circuit. A third sealing ring is arranged at the connection between the fourth air circuit and the fifth air circuit.