Threaded air compression double-acting support

Abstract

The threaded air compression double-acting type supporting device comprises a movable cavity formed by a cylinder body, a base and an upper cover in a surrounding mode, and a locking air inlet, a piston ascending air inlet and a piston pull-down loosening air inlet which are communicated with the outside are formed in the base; the supporting assembly is arranged in the movable cavity and comprises a piston movably arranged relative to the base and a supporting rod arranged on the outer side of the piston in a sleeving mode, the bottom of the piston is arranged relative to the piston rising air inlet, and the side edge of the piston is arranged relative to the piston pull-down loosening air inlet; the holding assembly is arranged in the movable cavity and comprises a pressing sleeve arranged relative to the locking air inlet and a conical clamping sleeve movably matched with the pressing sleeve, the conical clamping sleeve is arranged on the peripheral side of the supporting rod in a sleeving mode, and accurate supporting and rapid resetting are achieved in a double-acting air pressure driving mode; the reset action is achieved by means of the force of gas, and the effects of larger reset force and lower failure rate are achieved.

Description

Technical Field

[0001] This application relates to the field of supports, and particularly to a threaded pneumatic double-acting support. Background Art

[0002] In modern industrial production, in the fields of modern mechanical engineering and automated production, as one of the key components, the support undertakes important functions such as positioning, supporting, and resetting, and its performance directly affects the accuracy and efficiency of the entire system. Traditional support devices mostly adopt a spring reset mechanism to achieve the support and release of workpieces. Although this design is simple and has a low cost, some inherent limitations have gradually emerged in practical applications.

[0003] The spring reset mechanism relies on the elastic potential energy of the spring to drive the support element to reset. However, this mechanism has the following significant disadvantages: 1. Limited reset force: The reset force of the spring is restricted by its physical properties. For heavy-duty workpieces or application scenarios that require a strong reset force, the spring may not be able to provide sufficient force, thus affecting the rapid reset of the support element and the timely replacement of the workpiece. 2. High failure rate: Long-term use will cause spring fatigue and even fracture, which not only increases the failure rate of the equipment but may also lead to production interruption, increase maintenance costs and downtime, and have a negative impact on production efficiency. 3. Inconsistent reset speed: The reset speed of the spring is affected by various factors, including the initial compression degree of the spring, ambient temperature, etc., which may lead to inconsistencies in the reset speed and affect the rhythm and synchronization of the production process.

[0004] It can be seen that the traditional spring-reset support is already difficult to meet the needs of modern production. Therefore, developing a new type of support with a pneumatic reset mechanism to achieve a stronger reset force, higher reliability, more precise control, and faster reset speed has become an important research direction. Summary of the Invention

[0005] The solution of this application provides a threaded pneumatic double-acting support, which uses a double-acting pneumatic drive method to achieve precise support and rapid reset. By leveraging the power of gas to perform the reset action, it has the effects of a greater reset force and a lower failure rate.

[0006] To achieve the above objectives, the technical solution of this application provides a threaded pneumatic double-acting support, including:

[0007] An active chamber surrounded by a cylinder block, a base, and an upper cover, wherein the base is provided with a locking air inlet, a piston rising air inlet, and a piston pulling down and relaxing air inlet that communicate with the outside;

[0008] A support assembly disposed in the active chamber, wherein the support assembly includes a piston movably disposed relative to the base and a support rod sleeved outside the piston. The bottom of the piston is disposed relative to the piston rising air inlet, and the side of the piston is disposed relative to the piston pulling-down and relaxing air inlet.

[0009] A clamping assembly disposed in the active chamber, wherein the clamping assembly includes a pressing sleeve disposed relative to the locking air inlet and a conical clamping sleeve movably cooperating with the pressing sleeve. The conical clamping sleeve is sleeved on the outer peripheral side of the support rod.

[0010] Compared with the prior art, the technical solution has the following characteristics and beneficial effects: The support device can realize the bidirectional drive of the piston, that is, the piston can be driven upward to support the workpiece or driven downward to release the workpiece. This characteristic is achieved through the independent air pressure control of the piston rising air inlet and the piston pulling-down and relaxing air inlet. When moving upward, air pressure enters from the piston rising air inlet, driving the piston and the support rod to rise, thereby realizing the precise support of the workpiece. When moving downward, air pressure enters from the piston pulling-down and relaxing air inlet, causing the piston and the support rod to move downward to complete the rapid reset of the support rod. This bidirectional power control not only ensures the accuracy of the support and release operations, but also greatly improves the work efficiency and operation flexibility, reduces the downtime and maintenance costs caused by failures, and brings higher reliability to production and use. Brief Description of the Drawings

[0011] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0012] Figure 1 is a structural schematic diagram of a threaded pneumatic double-acting support device.

[0013] In the figure: 10 - active chamber, 11 - cylinder block, 12 - base, 121 - first base body, 122 - second base body, 13 - upper cover, 20 - support assembly, 21 - piston, 211 - piston base, 212 - piston rod, 22 - support rod, 23 - support head, 24 - support spring, 25 - screw sleeve, 30 - clamping assembly, 31 - pressing sleeve, 32 - conical clamping sleeve, 33 - cone sleeve, 34 - ball, 100 - locking air inlet, 200 - piston rising air inlet, 300 - piston pulling-down and relaxing air inlet. Detailed Description of the Embodiment

[0014] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with one or more embodiments of this specification. On the contrary, they are merely examples of devices and methods consistent with some aspects of one or more embodiments of this specification as detailed in the appended claims.

[0015] It should be noted that: in other embodiments, the steps of the corresponding method are not necessarily performed in the order shown and described in this specification. In some other embodiments, the steps included in the method may be more or less than those described in this specification. In addition, a single step described in this specification may be decomposed into multiple steps for description in other embodiments; and multiple steps described in this specification may also be combined into a single step for description in other embodiments.

[0016] Embodiment 1

[0017] As Figure 1 shown, the screw air pressure double-acting type supporter provided by this solution includes:

[0018] An active chamber 10 formed by surrounding a cylinder block 11, a base 12, and an upper cover 12, wherein a locking air inlet 100, a piston rising air inlet 200, and a piston pulling-down relaxation air inlet 300 communicating with the outside are provided on the base 12.

[0019] A support assembly 20 disposed in the active chamber 10, wherein the support assembly 20 includes a piston 21 movably disposed relative to the base 12 and a support rod 22 sleeved outside the piston 21. The bottom of the piston 21 is disposed relative to the piston rising air inlet 200, and the side of the piston 21 is disposed relative to the piston pulling-down relaxation air inlet 300.

[0020] A clamping assembly 30 disposed in the active chamber 10, wherein the clamping assembly 30 includes a pressing sleeve 31 disposed relative to the locking air inlet 100 and a conical clamping sleeve 32 movably cooperating with the pressing sleeve 31. The conical clamping sleeve 32 is sleeved on the outer peripheral side of the support rod 22.

[0021] It is worth mentioning that when it is necessary to drive the threaded pneumatic double-acting support to support the workpiece, air pressure is filled into the piston rising air inlet 200 to drive the piston 21 to drive the support rod 22 to contact the workpiece. When the required position is reached, air pressure is filled into the locking air inlet 100. At this time, the air pressure drives the pressing sleeve 31 to press down to press the conical bushing 32 to tighten the support rod 22; when it is necessary to release the support of the workpiece by the threaded pneumatic double-acting support, first release the pressure in the locking air inlet 100, and then fill air pressure into the piston pulling-down relaxation air inlet 300 to drive the piston 21 to drive the support rod 9 to move towards the base 12. The relaxation of the threaded pneumatic double-acting support cylinder provided by this solution uses pneumatic reset. Pneumatic reset is actually a passive relaxation method. It uses the power of gas to achieve the reset action. Compared with spring reset, it has better performance, greater reset force, and lower failure rate, reducing the downtime and maintenance costs caused by failures, and bringing higher reliability to production and use.

[0022] Regarding the movable chamber 10 of this solution: The base 12 is placed at the bottom of the cylinder block 11, the upper cover 13 is placed at the top of the cylinder block 11, and a hole for the support rod 21 to pass through is formed on the upper cover 13. The main body of the support rod 21 is located in the movable chamber 10, and one side of the support rod 21 passes through the upper cover 13 to support the workpiece.

[0023] One end of the locking air inlet 100 provided on the base 12 of this solution is communicated with the outside air, and the other end is communicated with the space where the pressing sleeve 2 is located, so that when the air pressure enters from the locking air inlet 100, it can reach the position where the pressing sleeve 2 is located to drive the pressing sleeve 2 to move.

[0024] One end of the piston rising air inlet 200 provided on the base 12 of this solution is communicated with the outside air, and the other end is arranged relative to the bottom of the piston 21; similarly, one end of the piston pulling-down relaxation air inlet 200 is communicated with the outside air, and the other end is arranged relative to the side of the piston 21, so that when the air pressure enters from the piston rising air inlet 200, it can drive the piston 21 to rise from the bottom upwards, and when the air pressure enters from the piston pulling-down relaxation air inlet 200, it can drive the piston 21 to descend from the top to the bottom.

[0025] Specifically, the base 12 of this solution includes a first base body 121 and a second base body 122 which are integrally provided. A first piston channel is provided in the first base body, and a second piston channel is provided in the second base body. The first piston channel and the second piston channel are communicated, and the channel diameter of the second piston channel is smaller than that of the first piston channel. The piston rising air inlet 200 is communicated with the first piston channel, and the piston pulling-down relaxation air inlet 300 is communicated with the second piston channel. Correspondingly, the piston 21 includes a piston base 211 and a piston rod 212 which are integrally provided. The piston base 211 is placed inside the first piston channel to move, and the piston rod 212 passes through the second piston channel and moves inside the moving chamber 10.

[0026] It should be noted that the diameter of the second piston channel is smaller than that of the piston base 211, so that the piston base 211 can only move inside the first piston channel; the length of the piston rod 212 is longer than that of the second piston channel, so that the piston rod 212 can move along the second piston channel under the drive of the piston base 211. At this time, when the air pressure enters the first piston channel from the piston rising air inlet 211, the air pressure pushes the piston base 211 to rise in the direction of the second piston channel; when the air pressure enters the second piston channel from the piston pulling-down relaxation air inlet 200, the air pressure pushes the piston base 211 to pull down in the direction away from the second piston channel.

[0027] The support rod 22 is sleeved outside the piston 21 to change its displacement following the displacement of the piston 21. When the piston 21 rises, it drives the support rod 22 to rise, and when the piston 21 descends, it drives the support rod 22 to descend. In some specific embodiments, the bottom shape of the support rod 22 matches the shape of the second base body 122, so that when the support rod 22 is not lifted by the air pressure, the support rod 22 is arranged in a manner that fits the second base body 122 of the base 12. More specifically, the second base body 122 of this solution is designed with a structure that has a straight bar in the middle position and stepped surfaces on both sides. Correspondingly, the bottom of the support rod 22 is also designed with a structure composed of a matching stepped portion and a straight bar portion, so that the support rod 22 can slowly fit the base 12, improving the service life of this screw air pressure double-acting type support device.

[0028] In some other embodiments, a screw sleeve 25 is sleeved on the top of the piston 21, a support head 23 is provided at the top of the support rod 22, and a support spring 24 is connected between the screw sleeve 25 and the support head 23. Specifically, the support rod 22 is sleeved on the outer sides of the screw sleeve 25 and the piston 21, and the top of the support rod 22 is spaced from the screw sleeve 25. A support spring 24 is connected between the support head 22 at the top of the support rod 22 and the screw sleeve 25. The advantage of this design is that it provides a flexible and adjustable supporting force during the process of the support rod 22 supporting the workpiece, so as to protect the workpiece from excessive impact or stress, and at the same time ensure the stability and accuracy of the support. Specifically, when the support head 23 of the support rod 22 contacts the workpiece, the support spring 24 can absorb and buffer the impact force generated during the support process, avoiding the damage that may be brought to the workpiece by direct hard contact.

[0029] Regarding the clamping assembly 30 of this solution:

[0030] The pressing sleeve 31 of the clamping assembly 30 is in contact with the tapered sleeve 33. There are balls 34 between the tapered sleeve 33 and the tapered clamping sleeve 32 sleeved on the outer side of the support rod 22. When the pressing sleeve 31 is pressed down under the action of air pressure, it drives the tapered sleeve 33 to move downward as well and applies a radial pressure to the tapered clamping sleeve 32. When the tapered clamping sleeve 32 receives the radial pressure, the pressure is converted into a radial clamping force on the support rod 22.

[0031] The setting of the balls 34 is to reduce the friction between the tapered sleeve 33 and the tapered clamping sleeve 32 and improve the force transmission efficiency. These balls or rollers can roll under the action of pressure, converting sliding friction into rolling friction, greatly reducing energy loss, enabling the tapered clamping sleeve 32 to respond more smoothly to the downward pressing action of the pressing sleeve 31, and achieving stable clamping of the support rod 22.

[0032] Specifically, the tapered clamping sleeve 32 of this solution is sleeved on the outer side of the support rod 22, and the tapered clamping sleeve 32 is designed as an annular part with a tapered outer surface. The tapered sleeve 22 is designed as an annular part with a tapered inner surface, and the tapered angles of the tapered outer surface and the tapered inner surface are the same but in opposite directions. In some embodiments, the diameter of one end of the tapered clamping sleeve close to the pressing sleeve is smaller, while the diameter of the end far from the pressing sleeve is larger. This design ensures that when the pressing sleeve is pressed down, the tapered clamping sleeve can receive greater pressure at the end with a smaller outer diameter, thereby generating a uniform outward expansion force within the entire length of the tapered clamping sleeve. The diameter of the tapered sleeve is larger at the end in contact with the tapered clamping sleeve and smaller at the other end. This design enables the tapered sleeve to effectively transmit the pressure to the tapered clamping sleeve when the pressing sleeve is pressed down.

[0033] It should be noted that the pressing sleeve 31 is arranged in the sealed chamber within the cylinder block 11. When air pressure enters the sealed chamber where the pressing sleeve 31 is located from the locking port, the air pressure inside the sealed chamber will increase until it reaches the same level as the external air pressure source. Since a sealed space is formed between the pressing sleeve 31 and the upper part of the sealed chamber, the air pressure in this space will also increase accordingly. The product of the top area of the pressing sleeve and the air pressure generates a downward force, which causes the pressing sleeve to move downward under the action of the air pressure.

[0034] Those skilled in the art should understand that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0035] The above embodiments only represent several implementation manners of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A threaded air compressor double-acting support, characterized in that: include: An active chamber surrounded by a cylinder body, a base and an upper cover, wherein the base is provided with a locking air inlet communicating with the outside, an air inlet for piston rise and an air inlet for piston pull down; A support assembly is arranged in the movable chamber, wherein the support assembly includes a piston movably arranged relative to the base and a support rod sleeved on the outside of the piston, the bottom of the piston is arranged relative to the piston rising air inlet, and the side of the piston is arranged relative to the piston pulling down and relaxing air inlet; A clamping assembly is arranged in the movable chamber, wherein the clamping assembly includes a compression sleeve arranged relative to the locking air inlet and a conical clamping sleeve movably matched with the compression sleeve, and the conical clamping sleeve is sleeved on the outer peripheral side of the support rod.

2. The threaded air-compressed double-acting support according to claim 1, characterized in that: The top of the piston is sleeved with a threaded sleeve, the top of the support rod is provided with a supporting head, and the threaded sleeve and the supporting head are connected through a supporting spring.

3. The threaded air-compressed double-acting support according to claim 1, characterized in that: The base includes a first base body and a second base body which are integrally arranged, wherein a first piston channel is provided in the first base body, and a second piston channel is provided in the second base body, the first piston channel and the second piston channel are communicated with each other and the channel diameter of the second piston channel is smaller than the channel diameter of the first piston channel, the air inlet when the piston rises is communicated with the first piston channel, and the air inlet when the piston is pulled down to relax is communicated with the second piston channel.

4. The threaded air-compressed double-acting support according to claim 3 is characterized in that: The piston comprises an integrally arranged piston base and a piston rod. The piston base is arranged in a first piston passage and moves therein. The piston rod passes through a second piston passage and moves therein.

5. The threaded air-compressed double-acting support according to claim 4, characterized in that: When the air pressure enters the first piston channel from the air inlet when the piston rises, the air pressure pushes the piston base to rise in the direction of the second piston channel; and when the air pressure enters the second piston channel from the air inlet when the piston falls, the air pressure pushes the piston base to fall away from the second piston channel.

6. The threaded air-compressed double-acting support according to claim 3, characterized in that: The bottom shape of the support rod matches the shape of the second base body, so that when the support rod is not lifted up by the air pressure, the support rod is arranged in close contact with the second base body of the base.

7. The threaded air-compressed double-acting support according to claim 6, characterized in that: The second base body is designed as a structure with a straight bar in the middle and stepped surfaces on both sides, and the bottom of the support rod is designed as a structure composed of matching stepped parts and straight bar parts.

8. The threaded air-compressed double-acting support according to claim 1, characterized in that: The clamping sleeve of the clamping assembly is connected to the tapered sleeve, and balls are arranged between the tapered sleeve and the tapered sleeve arranged on the outside of the support rod. When the clamping sleeve is pressed down by the air pressure, the tapered sleeve is also driven to move downward and exert radial pressure on the tapered sleeve. When the tapered sleeve is subjected to the radial pressure, the pressure is converted into a radial clamping force on the support rod.

9. The threaded air-compressed double-acting support according to claim 8, characterized in that: The conical jacket is designed as an annular component with a conical outer surface, and the conical sleeve is designed as an annular component with a conical inner surface, and the conical outer surface and the conical inner surface have the same conical angle but opposite directions.

10. The threaded air-compressed double-acting support according to claim 1, characterized in that: A hole for the support rod to pass through is formed on the upper cover. The main body of the support rod is located in the active chamber and one side of the support rod passes through the upper cover.

Images