Flexible supporting air cylinder

Abstract

The flexible supporting air cylinder comprises a cylinder body assembly, a supporting assembly and a clamping assembly, the cylinder body assembly is provided with an outer cylinder body, an inner cylinder body, an outer cylinder cover and a main piston, the main piston can move in a cavity of the outer cylinder body, and the inner cylinder body and the outer cylinder cover are fixedly connected to the two ends of the cavity; an air inlet is formed in the outer cylinder body, and external high-pressure airflow is introduced to act on the main piston to move the main piston; the supporting assembly can move by a certain distance in the axial direction of the cylinder body assembly, the periphery of the supporting assembly is sleeved with the holding and clamping assembly, one end of the main piston abuts against the holding and clamping assembly and moves by a certain distance under driving of external high-pressure airflow, and therefore the holding and clamping assembly is driven to move synchronously, the supporting assembly is locked by the holding and clamping assembly, and the supporting assembly can support an external workpiece. In conclusion, when the external workpiece is supported in the vertical direction, the functions of early-stage flexible abutting and later-stage locking supporting can be achieved, supporting of the external workpiece in the vertical direction is more stable, and later-stage machining is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a flexible support cylinder. Background Art

[0002] A cylinder refers to a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. Some cylinders can use high-pressure airflow as power, and use pneumatic transmission to convert the pressure energy of compressed gas into mechanical energy, thus becoming a pneumatic actuator.

[0003] The support cylinder is a kind of fixture component and an actuator with relatively high technical content. The support cylinder is generally used to support the workpiece to prevent it from being deformed by the cutting force during processing, to avoid vibration during processing, and thus affecting the processing accuracy of the workpiece. It has a low-pressure self-locking function. Because the support cylinder is mainly used to prevent the deformation of the workpiece during processing, the industry calls it a "support cylinder".

[0004] At present, the flexible support cylinders widely used in the market have poor flexibility, small self-locking force, and are easy to get stuck, resulting in low workpiece processing accuracy and cost waste. It is urgent to improve the structure of the existing support cylinders to improve the processing accuracy of the workpiece. Therefore, how to achieve more flexible support in the early stage and support with strong locking force in the later stage is a technical issue that needs to be considered. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] The utility model provides a flexible supporting cylinder, comprising a cylinder assembly, a supporting assembly and a clamping assembly, wherein the cylinder assembly is provided with an outer cylinder, an inner cylinder, an outer cylinder cover and a main piston, wherein a cavity is provided inside the outer cylinder, wherein the main piston can move in the cavity, and the inner cylinder and the outer cylinder cover are respectively fixed to openings at both ends of the cavity of the outer cylinder; the outer cylinder is provided with an air inlet for receiving an external high-pressure airflow, thereby performing work on the main piston to move it; the supporting assembly is movably connected to the inside of the cylinder assembly, and can move a certain distance along the axial direction of the cylinder assembly, the clamping assembly is sleeved on the outer periphery of the supporting assembly, one end of the main piston abuts against the clamping assembly, and moves a certain distance under the drive of the external high-pressure airflow, thereby driving the clamping assembly to move synchronously, thereby locking the supporting assembly, and enabling the supporting assembly to support an external workpiece.

[0007] As a further solution of the utility model: an end of the inner cylinder body extending into the cavity of the outer cylinder body is provided with an extension column, and an end of the support shaft extending into the cavity of the outer cylinder body is provided with a sleeve, and the sleeve is sleeved on the extension column and can slide along the axial direction of the extension column.

[0008] As a further solution of the utility model: the support assembly is provided with a support shaft and a top spring, the top spring is installed in the internal cavity of the support shaft, one end of the top spring abuts against the support shaft, and the other end abuts against the inner cylinder body, and the elastic force of the top spring drives the support shaft to be in an upward lifting state.

[0009] As a further solution of the utility model: the support assembly is also provided with a spring guide column, and the spring guide column is slidably connected to the internal cavity of the support rod; one end of the spring guide column is connected to the inner cylinder body, and the other end thereof extends into the internal cavity of the support shaft and forms a limiting ring, and the support shaft is provided with a limiting step corresponding to the position of the limiting ring, and the limiting ring and the limiting step cooperate with each other so that the spring guide column forms a limiting effect on the support shaft.

[0010] As a further solution of the utility model: the clamping assembly is provided with a cable nozzle, a cone sleeve and a return spring, and a groove is provided on the side wall of the cable nozzle which penetrates the peripheral wall axially, one end of the cable nozzle abuts against the inner cylinder body, and the other end thereof extends into the internal cavity of the cone sleeve, one end of the cone sleeve is sleeved on the outer periphery of the cable nozzle, and the other end thereof abuts against the main piston; one end of the return spring abuts against the cable nozzle, and the other end thereof abuts against the cone sleeve; the inner wall of the cone sleeve is provided with a cone structure, or, the outer periphery of the cable nozzle is provided with a cone structure.

[0011] As a further solution of the utility model: the outer periphery of the cable nozzle is provided with a tapered structure with a diameter gradually increasing from top to bottom, and the inner wall of the tapered sleeve is provided with a tapered structure with a diameter gradually increasing from top to bottom.

[0012] As a further solution of the utility model: the clamping assembly is also provided with a rolling steel ball and a steel ball retaining ring. There are multiple rolling steel balls and they are evenly distributed in the gap between the cable nozzle and the cone sleeve, so as to reduce the contact friction between the cable nozzle and the cone sleeve; the steel ball retaining ring is sleeved on the outer periphery of the cable nozzle and fixedly connected to the lower part of the cone sleeve, so as to block the rolling steel balls.

[0013] As a further solution of the utility model: a push piston and a push-down spring are provided in the internal cavity of the inner cylinder body, the upper end of the push-down spring abuts against the inner cylinder body, and the lower end thereof abuts against the push piston, and the elastic force thereof drives the push piston to move downward in the internal cavity of the inner cylinder body; one end of the spring guide column extends into the internal cavity of the inner cylinder body and forms a fixed connection with the push piston, so that the downwardly moving push piston drives the spring guide column and the support shaft to move downward synchronously.

[0014] As a further solution of the utility model: a push air hole is also provided on the side wall of the inner cylinder body, and the push air hole is connected with the air inlet of the outer cylinder body, so that the external high-pressure airflow enters the inner cylinder body to push the push piston to move upward, thereby compressing the push-down spring, so that the spring guide column and the support shaft move upward synchronously.

[0015] As a further solution of the utility model: bypass air holes are also provided on the side wall of the inner cylinder body, and the bypass air holes are respectively connected to the internal cavities of the outer cylinder body and the inner cylinder body; when the push piston moves upward to the top of the inner cylinder body, the bypass air holes and the push air holes are connected, so that the external high-pressure airflow passes through the bypass air holes into the interior of the outer cylinder body, and drives the main piston to move downward, thereby driving the clamping assembly to lock the support assembly.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. By arranging a clamping assembly inside the cylinder and driving the clamping assembly by the main piston, the clamping assembly is moved a certain distance in the axial direction of the cylinder, thereby locking the support assembly, so that the support assembly can realize the function of locking support for the external workpiece.

[0018] 2. By setting an upper push spring, a certain upper push elastic force can be formed on the support shaft, so that when the external workpiece presses down on the support shaft, a flexible pressure can be formed under the action of the upper push elastic force, thereby forming a flexible contact effect on the external workpiece.

[0019] 3. The support shaft can also be kept in a retracted state by providing a push piston and a push spring, so that an upward abutment can be formed against the external workpiece during the upward movement of the push piston, thereby supporting a relatively light workpiece from bottom to top.

[0020] 4. By setting a bypass air hole, after the push piston moves up, the push air hole is connected with the bypass air hole, so that the external high-pressure air flow can enter the cavity of the outer cylinder body, drive the main piston, and drive the clamping assembly to lock the support shaft, thereby forming a supporting effect on the external workpiece.

[0021] Therefore, after the above-mentioned improvements, the utility model can provide a flexible support cylinder, which can realize the functions of flexible abutment in the early stage and locking support in the later stage when supporting the external workpiece in the vertical direction, so that the support of the external workpiece in the vertical direction is more stable and convenient for later processing.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is an overall cross-sectional schematic diagram of the second embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional schematic diagram of the second embodiment of the utility model after hiding the clamping assembly;

[0026] Figure 3 is a cross-sectional schematic diagram of the second embodiment of the utility model in a supporting state;

[0027] Figure 4 It is a schematic diagram of the exploded structure of the second embodiment of the utility model;

[0028] Figure 5 It is an overall cross-sectional schematic diagram of the first embodiment of the utility model;

[0029] Figure 6 It is a cross-sectional schematic diagram of the cylinder assembly of the utility model;

[0030] Figure 7 It is a cross-sectional schematic diagram of the extension column and the sleeve of the utility model;

[0031] Figure 8 It is a cross-sectional schematic diagram of the clamping assembly of the utility model;

[0032] Fig. 9 It is a schematic diagram of the exploded structure of the first embodiment of the utility model.

[0033] The reference numerals and names in the figures are as follows:

[0034] 10 cylinder assembly; 11 outer cylinder cover; 12 main piston; 13 outer cylinder; 14 air inlet; 20 inner cylinder; 21 extension column; 22 push hole; 23 bypass hole; 24 push piston; 25 push down spring; 26 inner cylinder cover; 30 support assembly; 31 support shaft; 32 sleeve; 33 limit step; 34 upper spring; 35 spring guide column; 36 limit ring; 37 adjusting bolt; 40 clamp assembly; 41 cable nozzle; 42 elbow; 43 groove; 44 spring retaining ring; 45 cone sleeve; 46 return spring; 47 rolling steel ball; 48 steel ball retaining ring; 51 seal; 52 vent hole. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 9 In the embodiment of the utility model, a flexible support cylinder comprises a cylinder assembly 10, a support assembly 30 and a clamp assembly 40. The cylinder assembly 10 is provided with an outer cylinder 13, an inner cylinder 20, an outer cylinder cover 11 and a main piston 12. A cavity is provided inside the outer cylinder 13, and the main piston 12 can move in the cavity. The inner cylinder 20 and the outer cylinder cover 11 are respectively fixed to the openings at both ends of the cavity of the outer cylinder 13; the outer cylinder 13 is provided with an air inlet 14 for receiving an external high-pressure airflow, so as to work the main piston 12 to move it; the support assembly 30 is movably connected to the inside of the cylinder assembly 10 and can move a certain distance along the axial direction of the cylinder assembly 10; the clamp assembly 40 is sleeved on the outer periphery of the support assembly 30, one end of the main piston 12 abuts against the clamp assembly 40, and moves a certain distance under the drive of the external high-pressure airflow, thereby driving the clamp assembly 40 to move synchronously, so that it locks the support assembly 30, so that the support assembly 30 can support the external workpiece.

[0037] Specifically, the outer cylinder body portion of the cylinder is composed of related accessories in the prior art, so that it can utilize external high-pressure airflow to drive the main piston 12, so that it moves a certain distance inside the cylinder body, thereby forming a synchronous drive for the clamping assembly 40, so that after the cone sleeve 45 of the clamping assembly 40 moves a certain distance relative to the cable nozzle 41, it can clamp the cable nozzle 41, causing the cable nozzle 41 to undergo partial inward deformation, thereby forming a clamping and locking operation on the support shaft 31, so that the support shaft 31 can support the external workpiece.

[0038] Secondly, the support assembly 30, the clamping assembly and the main piston 12 are all installed in the internal cavity of the cylinder assembly 10. In addition, when forming a vertical support for an external workpiece, it can be divided into two cases. One is the case of downward pressure support, that is, the external workpiece is relatively heavy or has a relatively strong structure. A certain pressure can be applied to the support cylinder from top to bottom, so that the support shaft 31 of the support cylinder moves downward a certain distance and then is locked, thereby forming a support for the external workpiece.

[0039] The other is the case of top support, that is, the external workpiece is relatively light and cannot form pressure on the support shaft 31 from above, that is, it cannot press down to move the support shaft 31. Therefore, only the movement from bottom to top can be considered, and after the support shaft 31 moves up, it actively abuts against the external workpiece to form support at the bottom.

[0040] Therefore, the support cylinder needs to be set in two ways. In the first embodiment, the elastic force of the upper spring 34 can be used to keep the support shaft 31 in an upward state. Then, the weight of the external workpiece itself or the power of other external equipment is used to press the external workpiece onto the support shaft 31, and the support shaft 31 is pressed down and moves downward by a certain distance. After moving to a suitable preset distance, the external air pump and other equipment are started to provide high-pressure airflow to the cylinder, so that the high-pressure airflow works on the main piston 12 to move it downward by a certain distance, and at the same time drives the cone sleeve 45 to move downward by a certain distance, thereby holding the cable nozzle 41 tightly, causing the cable nozzle 41 to deform to a certain extent, and then locking the support shaft 31, so that the support shaft 31 can stably support the external workpiece.

[0041] In the second embodiment, a push-down spring 25 can be added to keep the support shaft 31 in a downward contracted state in the initial state. Then, under the action of the external high-pressure airflow, the push piston 24 added inside the inner cylinder body 20 is worked to move the push piston 24 upward, thereby squeezing the push-down spring 25, causing the push-down spring 25 to contract a certain stroke, thereby releasing the downward push pulling force on the support shaft 31, so that the support shaft 31 can move upward a certain distance, thereby realizing upward abutment with the external workpiece. When the push piston 24 moves to the appropriate position, the upwardly moved support shaft 31 just abuts against the external workpiece. The appropriate position is preferably when the push piston 24 moves to the top of the inner cylinder body 20. At this time, the additional bypass air hole 23 is also connected with the push air hole 22, so that the external high-pressure airflow passes through the bypass air hole 23 and enters the cavity of the outer cylinder body 13, and drives the main piston 12 to move downward a certain distance, thereby also forming a downward driving force on the cone sleeve 45 to move downward a certain distance. Similarly, the cable nozzle 41 is held tightly, and the support shaft 31 is locked.

[0042] Finally, it should be noted that the corresponding part of the supporting cylinder can also be provided with a seal 51 in an existing product to achieve the corresponding airtight function. In addition, in order to make the main piston 12 move down smoothly, a corresponding air leakage hole 52 can also be provided on the inner cylinder body 20, so that the air in the lower part of the main piston 12 can be discharged from the air leakage hole 52 during the downward movement. The bottom of the air leakage hole 52 is provided with an internal thread interface, which can be conveniently connected to the air pipe to exhaust to the outside of the working environment, and can effectively prevent water, oil and other impurities from flowing back into the exhaust hole. In the second embodiment, since the push piston 24 is provided in the internal cavity of the inner cylinder body 20, it is also necessary to provide an inner cylinder cover 26 to block the cavity of the inner cylinder body 20.

[0043] like Figure 2 and Figure 7 As shown, preferably, an extension column 21 is provided at one end of the inner cylinder body 20 extending into the cavity of the outer cylinder body 13, and a sleeve 32 is provided at one end of the support shaft 31 extending into the cavity of the outer cylinder body 13. The sleeve 32 is sleeved on the extension column 21 and can slide along the axial direction of the extension column 21.

[0044] Specifically, in order to make the movement of the support shaft 31 in the cylinder body more stable, an extension column 21 can be set on the inner cylinder body 20, and a sleeve 32 can be set on the support shaft 31. The sleeve 32 can be relatively tightly sleeved on the extension column 21 for sliding, thereby increasing the movement stability of the support shaft 31.

[0045] In the first embodiment, if Figure 7 As shown, preferably, the support assembly 30 is provided with a support shaft 31 and an upper push spring 34, and the upper push spring 34 is installed in the internal cavity of the support shaft 31, one end of which abuts against the support shaft 31, and the other end abuts against the inner cylinder body 20, and the elastic force of the upper push spring 34 drives the support shaft 31 to be in an upward push state.

[0046] Specifically, in order to make the initial state of the support shaft 31 to be in an upwardly extended state, the upper push spring 34 can be used to push it to keep it in an upwardly springing state. The elastic force of the upper push spring 34 can be adjusted according to parameters such as the weight of the external workpiece, so that the external workpiece can smoothly press the support shaft 31 downward.

[0047] like Figure 2 , Figure 3 and Figure 7As shown, preferably, the support assembly 30 is also provided with a spring guide column 35, and the spring guide column 35 is slidably connected to the internal cavity of the support rod; one end of the spring guide column 35 is connected to the inner cylinder body 20, and the other end thereof extends into the internal cavity of the support shaft 31 and forms a limiting ring 36, and the support shaft 31 is provided with a limiting step 33 corresponding to the position of the limiting ring 36, and the limiting ring 36 cooperates with the limiting step 33 so that the spring guide column 35 forms a limiting effect on the support shaft 31.

[0048] Specifically, in order to limit the lifting distance of the support shaft 31, a spring guide column 35 can be provided, and the limit ring 36 and the limit step 33 can be used to limit the lifting distance of the support shaft 31. In addition, the support assembly 30 is also provided with an adjusting bolt 37, and the adjusting bolt 37 is adjustably fixed to one end of the support shaft 31 located outside the cylinder assembly 10, and one end of the lifting spring 34 abuts against the spring guide column 35, and the other end abuts against the adjusting bolt 37. The external workpiece can apply a certain pressure to the adjusting bolt 37, so that the lifting spring 34 is compressed and deformed, so that the support shaft 31 can move a certain distance toward the inside of the cylinder.

[0049] like Figure 1 , Figure 3 , Figure 4 and Figure 8 As shown, preferably, the clamping assembly 40 is provided with a cable nozzle 41, a cone sleeve 45 and a return spring 46. The side wall of the cable nozzle 41 is provided with a profile groove 43 that axially penetrates the peripheral wall. One end of the cable nozzle 41 abuts against the inner cylinder body 20, and the other end thereof extends into the internal cavity of the cone sleeve 45. One end of the cone sleeve 45 is sleeved on the outer periphery of the cable nozzle 41, and the other end thereof abuts against the main piston 12. One end of the return spring 46 abuts against the cable nozzle 41, and the other end thereof abuts against the cone sleeve 45. The inner wall of the cone sleeve 45 is provided with a tapered structure, or the outer periphery of the cable nozzle 41 is provided with a tapered structure. The outer periphery of the cable nozzle 41 is provided with a tapered structure with a gradually increasing diameter from top to bottom, and the inner wall of the cone sleeve 45 is provided with a tapered structure with a gradually increasing diameter from top to bottom.

[0050] Specifically, the main piston 12 is driven by the external high-pressure airflow to move downward, thereby driving the cone sleeve 45 to move downward synchronously, so that the cone structure of the cone sleeve 45 tightly embraces the outer periphery of the groove 43 of the cable mouth 41, and forces it to produce partial inward elastic deformation, so that the cable mouth 41 clamps the support assembly 30, so that the support assembly 30 can support the external workpiece. The reset spring 46 is used to push the cone sleeve 45 to move upward after the external high-pressure airflow stops driving, so that the cone sleeve 45 releases the outer periphery of the groove 43 of the cable mouth 41, and then the cable mouth 41 is in a relaxed state, releasing the locking of the support assembly 30, so that the support assembly 30 can move up and down. It can be understood that a corresponding spring retaining ring 44 is also provided at the position of the lower part of the cable mouth 41 abutting the spring, so as to form a resisting effect on the spring.

[0051] Secondly, preferably, a conical structure can be provided on both the conical sleeve 45 and the cable nozzle 41, and the conical structure of the conical sleeve 45 corresponds to the conical structure of the cable nozzle 41 and cooperates with each other, so that the conical sleeve 45 moves a certain distance from top to bottom, and can tightly embrace the outer periphery of the groove 43 of the cable nozzle 41, and force it to produce local inward elastic deformation, so that the cable nozzle 41 clamps the support assembly 30, so that the support assembly 30 can support the external workpiece.

[0052] like Figure 1 , Figure 4 , Figure 8 and Fig. 9 As shown, preferably, the clamping assembly 40 is also provided with a rolling steel ball 47 and a steel ball retaining ring 48. There are multiple rolling steel balls 47, which are evenly distributed in the gap between the cable mouth 41 and the cone sleeve 45, so as to reduce the contact friction between the cable mouth 41 and the cone sleeve 45; the steel ball retaining ring 48 is sleeved on the outer periphery of the cable mouth 41 and fixedly connected to the lower part of the cone sleeve 45, so as to block the rolling steel balls 47.

[0053] Specifically, in order to improve the relative movement smoothness between the cone sleeve 45 and the cable nozzle 41, a plurality of steel balls can be uniformly filled between the intervals between the two. In addition, an elbow 42 is also provided on the upper part of the cable nozzle 41 to block the rolling steel balls 47.

[0054] In the second embodiment, as shown in FIG. Figure 4 As shown, preferably, a push piston 24 and a push-down spring 25 are provided in the internal cavity of the inner cylinder body 20, the upper end of the push-down spring 25 abuts against the inner cylinder body 20, and the lower end thereof abuts against the push piston 24, and the elastic force thereof drives the push piston 24 to move downward in the internal cavity of the inner cylinder body 20; one end of the spring guide column 35 extends into the internal cavity of the inner cylinder body 20 and forms a fixed connection with the push piston 24, so that the downwardly moving push piston 24 drives the spring guide column 35 and the support shaft 31 to move downward synchronously.

[0055] Specifically, the elastic force of the push-down spring 25 can make the push piston 24 at the lower part of the inner cylinder 20, and the push piston 24 can make the spring guide column 35 synchronously in the downward position, and then through the cooperation of the limit ring 36 of the spring guide column 35 and the limit step 33 of the support shaft 31, the support shaft 31 can be pulled downward to be pressed into the outer cylinder 13. That is, the support shaft 31 of the support cylinder remains in a retracted state, and extends upward when needed, so that it can abut and support the external workpiece accordingly.

[0056] In addition, in this embodiment, a spring guide column 35 and a top spring 34 can still be provided, so that during the upward movement of the support shaft 31, the elastic force of the top spring 34 continues to form a top effect on the support shaft 31. When the support shaft 31 first abuts against the external workpiece during the upward movement, it can have a certain retraction ability, that is, the external workpiece can form a certain pressure on the top spring 34, so that the top spring 34 shrinks a certain amplitude, so that the initial flexible abutment can be formed on the external workpiece. When the abutment is in place, the corresponding main piston 12 is driven, so that the support shaft 31 is locked through the clamping assembly 40, thereby forming a stable support effect on the external workpiece.

[0057] like Figure 2 and Figure 3 As shown, preferably, the side wall of the inner cylinder 20 is also provided with a push hole 22, and the push hole 22 is connected with the air inlet 14 of the outer cylinder 13, so that the external high-pressure airflow enters the inner cylinder 20 to push the push piston 24 to move upward, thereby compressing the push-down spring 25, so that the spring guide column 35 and the support shaft 31 move upward synchronously. The side wall of the inner cylinder 20 is also provided with a bypass hole 23, and the bypass hole 23 is connected with the inner cavity of the outer cylinder 13 and the inner cylinder 20 respectively; when the push piston 24 moves upward to the top of the inner cylinder 20, the bypass hole 23 and the push hole 22 are connected, so that the external high-pressure airflow passes through the bypass hole 23 and enters the inner part of the outer cylinder 13, and drives the main piston 12 to move downward, thereby driving the clamping assembly 40 to lock the support assembly 30.

[0058] Specifically, in order to reduce the number of external air inlets 14 and the number of external ventilation pipes connected, a push hole 22 can be provided to communicate with the air inlet 14, so that the push piston 24 can be driven to operate. In addition, a bypass hole 23 can be provided to communicate with the push hole 22 by utilizing the space exposed after the push piston 24 moves, so that the high-pressure airflow passing through the push hole 22 continues to enter the cavity of the outer cylinder body 13 through the bypass hole 23, and then work is performed on the main piston 12, so that after the main piston 12 moves, the clamp assembly 40 is driven accordingly. The utility model creatively utilizes the bypass air hole 23 and the push air hole 22, thereby reducing the number of air inlets 14 and external air inlet pipes required, and can also utilize the push piston 24 to move upward to a suitable position, so that the bypass air hole 23 is connected with the push air hole 22, so that the main piston 12 moves at the right time, reducing the use of corresponding sensors, saving costs and improving efficiency.

[0059] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A flexible support cylinder, characterized in that: The invention comprises a cylinder assembly (10), a support assembly (30) and a clamping assembly (40); the cylinder assembly (10) is provided with an outer cylinder (13), an inner cylinder (20), an outer cylinder cover (11) and a main piston (12); a cavity is provided inside the outer cylinder (13), and the main piston (12) can move in the cavity; the inner cylinder (20) and the outer cylinder cover (11) are respectively fixed to openings at both ends of the cavity of the outer cylinder (13); the outer cylinder (13) is provided with an air inlet (14) for receiving an external high-pressure airflow, thereby Work is performed on the main piston (12) to move it; the support assembly (30) is movably connected to the inside of the cylinder assembly (10) and can move a certain distance along the axial direction of the cylinder assembly (10); the clamping assembly (40) is sleeved on the outer periphery of the support assembly (30); one end of the main piston (12) abuts against the clamping assembly (40) and moves a certain distance under the drive of the external high-pressure airflow, thereby driving the clamping assembly (40) to move synchronously, so that it locks the support assembly (30), so that the support assembly (30) can support the external workpiece.

2. A flexible support cylinder according to claim 1, characterized in that: An extension column (21) is arranged at one end of the inner cylinder body (20) extending into the cavity of the outer cylinder body (13), and a sleeve (32) is arranged at one end of the support shaft (31) extending into the cavity of the outer cylinder body (13). The sleeve (32) is sleeved on the extension column (21) and can slide along the axial direction of the extension column (21).

3. A flexible support cylinder according to claim 1, characterized in that: The support assembly (30) is provided with a support shaft (31) and an upper push spring (34). The upper push spring (34) is installed in the internal cavity of the support shaft (31), one end of which abuts against the support shaft (31) and the other end abuts against the inner cylinder body (20). The elastic force of the upper push spring (34) drives the support shaft (31) to be in an upward push state.

4. A flexible support cylinder according to claim 3, characterized in that: The support assembly (30) is also provided with a spring guide column (35), and the spring guide column (35) is slidably connected to the internal cavity of the support rod; one end of the spring guide column (35) is connected to the inner cylinder body (20), and the other end thereof extends into the internal cavity of the support shaft (31) to form a limiting ring (36); the support shaft (31) is provided with a limiting step (33) corresponding to the position of the limiting ring (36), and the limiting ring (36) and the limiting step (33) cooperate with each other, so that the spring guide column (35) forms a limiting effect on the support shaft (31).

5. A flexible support cylinder according to claim 1, characterized in that: The clamping assembly (40) is provided with a cable nozzle (41), a cone sleeve (45) and a return spring (46); a side wall of the cable nozzle (41) is provided with a profile groove (43) which penetrates the peripheral wall along the axial direction; one end of the cable nozzle (41) abuts against the inner cylinder body (20), and the other end thereof extends into the internal cavity of the cone sleeve (45); one end of the cone sleeve (45) is sleeved on the outer periphery of the cable nozzle (41), and the other end thereof abuts against the main piston (12); one end of the return spring (46) abuts against the cable nozzle (41), and the other end thereof abuts against the cone sleeve (45); the inner wall of the cone sleeve (45) is provided with a cone structure, or the outer periphery of the cable nozzle (41) is provided with a cone structure.

6. A flexible support cylinder according to claim 5, characterized in that: The outer periphery of the cable nozzle (41) is provided with a tapered structure with a diameter gradually increasing from top to bottom, and the inner wall of the tapered sleeve (45) is provided with a tapered structure with a diameter gradually increasing from top to bottom.

7. A flexible support cylinder according to claim 5, characterized in that: The clamping assembly (40) is further provided with a rolling steel ball (47) and a steel ball retaining ring (48). A plurality of the rolling steel balls (47) are provided and are evenly distributed in the gap between the cable mouth (41) and the cone sleeve (45), thereby reducing the contact friction between the cable mouth (41) and the cone sleeve (45); the steel ball retaining ring (48) is sleeved on the outer periphery of the cable mouth (41) and is fixedly connected to the lower part of the cone sleeve (45), thereby blocking the rolling steel balls (47).

8. A flexible support cylinder according to claim 4, characterized in that: A push piston (24) and a push-down spring (25) are arranged in the internal cavity of the inner cylinder body (20); the upper end of the push-down spring (25) abuts against the inner cylinder body (20), and the lower end of the push-down spring (25) abuts against the push piston (24), and the elastic force of the push piston (24) drives the push piston (24) to move downward in the internal cavity of the inner cylinder body (20); one end of the spring guide column (35) extends into the internal cavity of the inner cylinder body (20) and forms a fixed connection with the push piston (24), so that the push piston (24) moving downward drives the spring guide column (35) and the support shaft (31) to move downward synchronously.

9. A flexible support cylinder according to claim 8, characterized in that: The side wall of the inner cylinder body (20) is also provided with a push air hole (22), and the push air hole (22) is connected to the air inlet (14) of the outer cylinder body (13), so that external high-pressure air flow enters the inner cylinder body (20) to push the push piston (24) to move upward, thereby compressing the push-down spring (25), so that the spring guide column (35) and the support shaft (31) move upward synchronously.

10. A flexible support cylinder according to claim 9, characterized in that: A bypass air hole (23) is also provided on the side wall of the inner cylinder body (20), and the bypass air hole (23) is connected to the inner cavity of the outer cylinder body (13) and the inner cylinder body (20) respectively; when the push piston (24) moves upward to the top of the inner cylinder body (20), the bypass air hole (23) and the push air hole (22) are connected, so that the external high-pressure air flow passes through the bypass air hole (23) into the inner part of the outer cylinder body (13), and drives the main piston (12) to move downward, thereby driving the clamping assembly (40) to lock the support assembly (30).

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