Full-automatic pneumatic unlocking shaft clamp on rotating mechanism

Abstract

The embodiment of the utility model discloses a full-automatic pneumatic unlocking shaft clamp on a rotating mechanism, and belongs to the technical field of pneumatic clamps. The clamp comprises an expansion sleeve used for clamping a shaft piece; the clamping shaft is arranged on the periphery of the expansion sleeve and used for extruding the expansion sleeve inwards under the condition that the expansion sleeve is pressed into the clamping shaft, so that the expansion sleeve clamps the shaft piece; the pneumatic mechanism is connected with the clamping shaft and arranged at the end, away from the expansion sleeve, of the clamping shaft, a closed cavity is formed by the pneumatic mechanism and the clamping shaft, and the pneumatic mechanism is used for inflating the closed cavity so that the expansion sleeve can move towards the outside of the clamping shaft or controlling the closed cavity to release air so that the expansion sleeve can move towards the inside of the clamping shaft. Through control of the pneumatic mechanism, the expansion sleeve can achieve rapid and accurate clamping and loosening operation, and the automation degree and the working efficiency of a production line are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic fixtures, and particularly to a fully automatic pneumatic unlocking shaft fixture on a rotating mechanism. Background Art

[0002] At present, most traditional shaft fixtures are in a manual unlocking mode. Although this design is simple, it has significant problems of low efficiency and limitations. Manual operation not only takes a long time for clamping and unlocking, but also depends on the skill level of the operator, making it difficult to meet the requirements of high-efficiency and continuous production. Manually operated fixtures cannot be effectively applied in robot workstations, further exacerbating the limitations of fixture use.

[0003] The emergence of automated fixtures aims to solve these problems by reducing manual operation and improving work efficiency. However, the structure of automated fixtures is complex and usually involves multiple complex parts, which not only increases the difficulty of maintenance but also affects their reliability. In addition, the high cost of automated fixtures is also a challenge that cannot be ignored, restricting their popularization in small and medium-sized enterprises. Summary of the Utility Model

[0004] An embodiment of the utility model provides a fully automatic pneumatic unlocking shaft fixture on a rotating mechanism, which solves the problems of complex structure and high cost of automated fixtures.

[0005] To achieve the above object, on the one hand, the utility model provides a fully automatic pneumatic unlocking shaft fixture on a rotating mechanism, and the fixture includes:

[0006] A expansion sleeve for clamping a shaft member;

[0007] A clamping shaft is arranged on the periphery of the expansion sleeve and is used for inwardly extruding the expansion sleeve when the expansion sleeve is pressed into the clamping shaft, so that the expansion sleeve clamps the shaft member;

[0008] A pneumatic mechanism is connected to the clamping shaft and is arranged at one end of the clamping shaft far from the expansion sleeve, and forms a sealed cavity with the clamping shaft, and is used for inflating the sealed cavity to make the expansion sleeve move outwards relative to the clamping shaft, or controlling the sealed cavity to deflate to make the expansion sleeve move inwards relative to the clamping shaft.

[0009] Optionally, the expansion sleeve includes:

[0010] A base, and expansion grooves are uniformly arranged on the base along the axial direction;

[0011] Clamping teeth are arranged on the top of the base and between two adjacent expansion grooves, and are used for opening to loosen the shaft member when the sealed cavity is inflated, or contracting to clamp the shaft member when the sealed cavity deflates.

[0012] Optionally, the fixture further includes a piston, the top of the piston abuts against the bottom of the expansion sleeve, a first groove is provided on the circumference of the piston, and a first sealing ring is provided in the first groove.

[0013] Optionally, the fixture further includes a disc spring, and the disc spring is sleeved on the bottom of the base.

[0014] Optionally, the pneumatic mechanism includes:

[0015] A passive rotating shaft assembly, and the passive rotating shaft assembly includes:

[0016] A first base;

[0017] A passive rotating shaft, connected to the first base, a first recess is provided at the bottom of the passive rotating shaft, and a first air guide channel is axially provided through the passive rotating shaft;

[0018] A first sleeve assembly, sleeved outside the passive rotating shaft assembly for fixing the passive rotating shaft assembly.

[0019] Optionally, the pneumatic mechanism further includes a bearing assembly, the bearing assembly is sleeved on the top and bottom of the passive rotating shaft, and the bearing assembly rotates axially driven by the passive rotating shaft.

[0020] Optionally, the fixture includes an unlocking mechanism, the unlocking mechanism is arranged below the pneumatic mechanism, and there is a floating fit gap between the bottom of the pneumatic mechanism and the top of the unlocking mechanism. The unlocking mechanism includes:

[0021] A floating docking shaft, a second air guide channel is arranged inside the floating docking shaft, and a first end of the second air guide channel is arranged at the top of the floating docking shaft;

[0022] An air joint, arranged at the second end of the second air guide channel for connecting an external solenoid valve;

[0023] A floating joint, connected to the bottom of the third end of the second air guide channel for pushing the floating docking shaft to dock with the passive rotating shaft;

[0024] A cylinder assembly, arranged at the bottom of the floating joint for pushing the floating joint and the floating docking shaft.

[0025] Optionally, a first protrusion is provided at the top of the floating docking shaft, the first protrusion extends into the first recess of the passive rotating shaft to connect the first air guide channel and the second air guide channel, and a second sealing ring is provided at the top of the first protrusion.

[0026] Optionally, the fixture includes a support seat, and the support seat includes:

[0027] The first fixing plate;

[0028] The second fixing plate is arranged on the first fixing plate and used for fixing the unlocking mechanism;

[0029] The second sleeve is arranged on the first fixing plate. The second sleeve is provided with an axially penetrating through hole, and the through hole is clamped with the first sleeve assembly.

[0030] Through the above technical solution, the present utility model provides a fully automatic pneumatic unlocking shaft fixture on a rotating mechanism. The expansion sleeve is used for clamping the shaft part. The clamping shaft is arranged on the periphery of the expansion sleeve and is used for inwardly extruding the expansion sleeve when the expansion sleeve is pressed into the clamping shaft, so as to enable the expansion sleeve to clamp the shaft part. The pneumatic mechanism is connected to the clamping shaft and is arranged at one end of the clamping shaft far from the expansion sleeve, forming a sealed cavity with the clamping shaft. The pneumatic mechanism is used for inflating the sealed cavity to enable the expansion sleeve to move outward relative to the clamping shaft, or controlling the air leakage of the sealed cavity to enable the expansion sleeve to move inward relative to the clamping shaft. Through the control of the pneumatic mechanism, the expansion sleeve can achieve fast and accurate clamping and loosening operations, significantly improving the automation degree and working efficiency of the production line. Moreover, the structure of the present utility model is simple, reducing the cost.

[0031] Other features and advantages of the embodiments of the present utility model will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0032] The drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementation, they are used to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0033] Figure 1 is a cross-sectional view of a fixture according to an embodiment of the present utility model;

[0034] Figure 2 is a schematic diagram of an expansion sleeve according to an embodiment of the present utility model;

[0035] Figure 3 is a cross-sectional view of a partial structure according to an embodiment of the present utility model;

[0036] Figure 4 is a schematic diagram of a fixture according to an embodiment of the present utility model.

[0037] Description of the Reference Numerals in the Drawings

[0038] 1. Expansion sleeve 2. Clamping shaft

[0039] 3. Pneumatic mechanism 11. Base

[0040] 12. Clamping teeth 4, piston

[0041] 5. Disc spring 31. Passive rotating shaft assembly

[0042] 311. First base 312. Passive rotating shaft

[0043] 32. First sleeve assembly 33. Bearing assembly

[0044] 6. Unlocking mechanism 61. Floating docking shaft

[0045] 62. Air joint 63. Floating joint

[0046] 64. Cylinder assembly 7. Support seat

[0047] 71. First fixing plate 72. Second fixing plate

[0048] 73. Second sleeve Detailed implementation mode

[0049] The following will describe in detail the specific implementation modes of the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation modes described herein are only for the purpose of illustration and explanation of the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0050] In the embodiments of the present invention, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are usually in the directions shown in the drawings or in terms of the vertical, perpendicular or gravitational directions for describing the relative positional relationships of the components.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0052] Figure 1It is a cross-sectional view of a fixture according to an embodiment of the present utility model. In this figure, the fixture includes an expansion sleeve 1, a clamping shaft 2, and a pneumatic mechanism 3. The expansion sleeve 1 is used for the shaft 2 part. The clamping shaft 2 is arranged on the periphery of the expansion sleeve 1 and is used to inwardly squeeze the expansion sleeve 1 when the expansion sleeve 1 is pressed into the clamping shaft 2, so as to clamp the shaft 2 part. The pneumatic mechanism 3 is connected to the clamping shaft 2 and is arranged at one end of the clamping shaft 2 away from the expansion sleeve 1, forming a sealed cavity with the clamping shaft 2. The pneumatic mechanism 3 is used to inflate the sealed cavity, so that the expansion sleeve 1 moves outward relative to the clamping shaft 2, or controls the deflation of the sealed cavity, so that the expansion sleeve 1 moves inward relative to the clamping shaft 2. When the pneumatic mechanism 3 inflates the sealed cavity, the pressure of the gas will cause the expansion sleeve 1 to move outward relative to the clamping shaft 2. At this time, the inner radius of the expansion sleeve 1 increases, thereby loosening the previously clamped shaft part. When the gas in the sealed cavity is controllably deflated, the gas pressure decreases, and the expansion sleeve 1 will move inward relative to the clamping shaft 2. This action will cause the inner diameter of the expansion sleeve 1 to contract, thereby clamping the shaft 2 part and ensuring the stable fixation of the shaft part. Through the control of the pneumatic mechanism 3, the expansion sleeve 1 can achieve fast and precise clamping and loosening operations, significantly improving the automation level and working efficiency of the production line. Moreover, the structure of the present utility model is simple, reducing the cost.

[0053] In this embodiment, for the composition of the expansion sleeve 1, under the premise of being able to clamp the shaft 2 part, it can be various known to those skilled in the art. In an example of the present utility model, such as Figure 2 shown, the expansion sleeve 1 may include a base 11 and clamping teeth 12. The base 11 is uniformly provided with expansion grooves along the axial direction. The clamping teeth 12 are arranged on the top of the base 11 and between two adjacent expansion grooves, and are used to open to loosen the shaft part when inflating the sealed cavity, or contract to clamp the shaft 2 part when the sealed cavity deflates. The setting of the clamping teeth 12 ensures that the shaft part will not displace during the processing, improving the stability of the fixture.

[0054] In this embodiment, considering that it is necessary to ensure uniform distribution of gas pressure on the expansion sleeve 1, the fixture may further include a piston 4. The top of the piston 4 abuts against the bottom of the expansion sleeve 1, and the piston 4 provides stable support for the expansion sleeve 1. Further, in order to prevent the fixture from loosening or leaking air during operation, a first groove is provided on the circumference of the piston 4, and a first sealing ring is arranged in the first groove. The use of the first sealing ring ensures the airtightness of the sealed cavity. In addition, for the number of the first sealing rings, it can be multiple known to those skilled in the art, such as: 1, 2, 3, etc. In a preferred example of the utility model, the number of the first sealing rings can be 2.

[0055] In this embodiment, the fixture can be composed of various types known to those skilled in the art. In an example of the present invention, in order to further improve the stability of the device, the fixture further includes a disc spring 5. The disc spring 5 is sleeved on the bottom of the base 11, effectively absorbing the impact and vibration generated during the movement of the piston 4 and providing elastic support to the expansion sleeve 1.

[0056] In this embodiment, the pneumatic mechanism 3 can be composed of various types known to those skilled in the art. In an example of the present invention, as Figure 3 shown, the pneumatic mechanism 3 includes a passive rotating shaft assembly 31 and a first sleeve assembly 32. The first sleeve assembly 32 is sleeved outside the passive rotating shaft assembly 31 for fixing the passive rotating shaft assembly 31. Further, the rotated shaft assembly includes a first base 311 and a passive rotating shaft 312. The passive rotating shaft 312 is connected to the first base 311. A first recess is provided at the bottom of the passive rotating shaft 312, and a first air guide channel is axially penetrated through the passive rotating shaft 312.

[0057] During the processing of the shaft part, rotation is required. Therefore, when the shaft part rotates, the passive rotating shaft assembly 31 and the clamping shaft 2 will rotate along with the rotation of the shaft part. In this embodiment, in order to enable the passive rotating shaft 312 to rotate smoothly and reduce friction and wear during rotation, the pneumatic mechanism 3 further includes a bearing assembly 33. The bearing assembly 33 is sleeved on the top and bottom of the passive rotating shaft 312.

[0058] In this embodiment, as Figure 1As shown, the fixture further includes an unlocking mechanism 6. The unlocking mechanism 6 is arranged below the pneumatic mechanism 3, and there is a floating fit gap between the bottom of the pneumatic mechanism 3 and the top of the unlocking mechanism 6. The floating fit gap between the floating docking shaft 61 and the pneumatic mechanism 3 makes the unlocking process smoother and reduces the docking error. Through the pneumatic unlocking of the unlocking mechanism 6, the automatic clamping of the shaft part is realized. For the composition of the unlocking mechanism 6, there are various types known to those skilled in the art. In an example of the present invention, the unlocking mechanism 6 includes a floating docking shaft 61, an air joint 62, a floating joint 63 and a cylinder assembly 64. A second air guide channel is arranged inside the floating docking shaft 61, and the first end of the second air guide channel is arranged at the top of the floating docking shaft 61. The air joint 62 is arranged at the second end of the second air guide channel and is used to connect an external solenoid valve. The floating joint 63 is connected to the bottom of the third end of the second air guide channel and is used to push the floating docking shaft 61 to dock with the passive rotating shaft 312. The cylinder assembly 64 is arranged at the bottom of the floating joint 63 and is used to push the floating joint 63 and the floating docking shaft 61. By connecting the air joint 62 with the external solenoid valve, precise air flow control can be achieved, ensuring that the floating joint 63 effectively pushes the floating docking shaft 61 to dock with the passive rotating shaft 312. The cylinder assembly 64 provides the necessary thrust to enable the floating joint 63 to stably connect with the floating docking shaft 61.

[0059] In this embodiment, in order to facilitate the connection of the first air guide channel and the second air guide channel, a first protrusion is provided at the top of the floating docking shaft 61. The first protrusion extends into the first recess of the passive rotating shaft 312 to connect the first air guide channel and the second air guide channel. In addition, a second sealing ring is arranged at the top of the first protrusion to enhance the airtightness of the air guide channel.

[0060] In order to fix the unlocking mechanism 6 and the pneumatic mechanism 3, as Figure 4 shown, the fixture further includes a support seat 7. For the specific structure of the support seat 7, there are various types known to those skilled in the art. In an example of the present invention, the support seat 7 includes a first fixing plate 71, a second fixing plate 72 and a second sleeve 73. The second fixing plate 72 is arranged on the first fixing plate 71 and is used to fix the unlocking mechanism 6. The second sleeve 73 is arranged on the first fixing plate 71. The second sleeve 73 is provided with an axially penetrating through hole, and the through hole is clamped with the first sleeve assembly 32.

[0061] Through the above technical solution, the present utility model provides a fully automatic pneumatic unlocking shaft fixture on a rotating mechanism. The expansion sleeve is used to clamp the shaft part, and the clamping shaft is arranged on the periphery of the expansion sleeve and is used to squeeze the expansion sleeve inward when the expansion sleeve is pressed into the clamping shaft, so that the expansion sleeve clamps the shaft part. The pneumatic mechanism is connected to the clamping shaft and is arranged at one end of the clamping shaft far from the expansion sleeve, forming a sealed cavity with the clamping shaft. The pneumatic mechanism is used to inflate the sealed cavity to make the expansion sleeve move outward from the clamping shaft, or control the deflation of the sealed cavity to make the expansion sleeve move inward into the clamping shaft. Through the control of the pneumatic mechanism, the expansion sleeve can achieve rapid and precise clamping and loosening operations, significantly improving the automation degree and working efficiency of the production line. Moreover, the structure of the present utility model is simple, reducing the cost.

[0062] The optional embodiments of the present utility model have been described in detail above in conjunction with the drawings. However, the embodiments of the present utility model are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present utility model, various simple modifications can be made to the technical solutions of the embodiments of the present utility model, and these simple modifications all belong to the protection scope of the embodiments of the present utility model.

[0063] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present utility model will not separately describe various possible combination methods.

[0064] Furthermore, any combination can be made among various different embodiments of the embodiments of the present utility model, as long as it does not violate the idea of the embodiments of the present utility model, and it should also be regarded as the content disclosed in the embodiments of the present utility model.

Claims

1. A fully automatic pneumatic unlocking shaft clamp on a rotating mechanism, characterized in that: The fixture comprises: Expansion sleeve, used to clamp shaft parts; A clamping shaft, arranged at the periphery of the expansion sleeve, and used for pressing the expansion sleeve inward when the expansion sleeve is pressed into the clamping shaft, so that the expansion sleeve clamps the shaft member; A pneumatic mechanism is connected to the clamping shaft and is arranged at one end of the clamping shaft away from the expansion sleeve, forming a closed cavity with the clamping shaft, and is used to inflate the closed cavity so that the expansion sleeve moves outward from the clamping shaft, or control the deflation of the closed cavity so that the expansion sleeve moves inward from the clamping shaft.

2. The clamp according to claim 1, characterized in that: The expansion sleeve comprises: A base, wherein the base is evenly provided with expansion grooves along the axial direction; The clamping teeth are arranged on the top of the base and located between two adjacent expansion grooves, and are used to open to loosen the shaft when the closed cavity is inflated, or to contract to clamp the shaft when the closed cavity is deflated.

3. The clamp according to claim 1, characterized in that: The clamp further comprises a piston, the top of the piston abuts against the bottom of the expansion sleeve, a first groove is arranged on the circumference of the piston, and a first sealing ring is arranged in the first groove.

4. The clamp according to claim 2, characterized in that: The clamp also includes a disc spring, and the disc spring is sleeved on the bottom of the base.

5. The clamp according to claim 1, characterized in that: The pneumatic mechanism comprises: A passive rotating shaft assembly, the passive rotating shaft assembly comprising: First base; A passive rotating shaft connected to the first base, a first depression being provided at the bottom of the passive rotating shaft, and a first air guide channel being provided through the passive rotating shaft along the axial direction; The first sleeve assembly is sleeved on the outside of the passive rotating shaft assembly and is used to fix the passive rotating shaft assembly.

6. The clamp according to claim 5, characterized in that: The pneumatic mechanism further comprises a bearing assembly, wherein the bearing assembly is sleeved on the top and bottom of the passive rotating shaft, and the bearing assembly is driven by the passive rotating shaft to rotate axially.

7. The clamp according to claim 5, characterized in that: The clamp includes an unlocking mechanism, which is arranged below the pneumatic mechanism, and a floating matching gap is provided between the bottom of the pneumatic mechanism and the top of the unlocking mechanism, and the unlocking mechanism includes: A floating docking shaft, wherein a second air guide channel is disposed inside the floating docking shaft, and a first end of the second air guide channel is disposed at the top of the floating docking shaft; An air connector, disposed at the second end of the second air guide channel, and used for connecting to an external solenoid valve; A floating joint connected to the bottom of the third end of the second air guide channel, and used to push the floating docking shaft to dock with the passive rotating shaft; The cylinder assembly is arranged at the bottom of the floating joint and is used to push the floating joint and the floating docking shaft.

8. The clamp according to claim 7, characterized in that: A first protrusion is provided on the top of the floating docking shaft, and the first protrusion extends into the first recess of the passive rotating shaft to connect the first air guide channel and the second air guide channel. A second sealing ring is provided on the top of the first protrusion.

9. The clamp according to claim 8, characterized in that The fixture comprises a support seat, and the support seat comprises: a first fixing plate; A second fixing plate, disposed on the first fixing plate, for fixing the unlocking mechanism; The second sleeve is arranged on the first fixing plate. The second sleeve is provided with an axially penetrating through hole, and the through hole is clamped with the first sleeve assembly.

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