Adaptive clamping system and method

Abstract

The present invention discloses an adaptive clamping system, including a clamping device, a pressure stabilizing device and a control module, wherein the control module is communicatively connected with the clamping device and the pressure stabilizing device; wherein the clamping device includes a clamping cylinder and a rotary joint arranged at the top of the clamping cylinder, and the clamping cylinder includes a cylinder body and a piston body; the rotary joint includes a rotating body and a shell, a first air passage is arranged in the piston body, and a second air passage is arranged in the piston body, the clamping device clamps the object and monitors the air pressure signal in real time, and the control module is used to control the action of the pressure stabilizing device according to the air pressure signal, adjust the air pressure of the clamping device, ensure that the clamping force between the clamping device and the object is constant, and realize adaptive clamping of the object. The present invention also discloses a corresponding clamping method. The present invention realizes adaptive clamping adjustment of the object, and effectively solves the problem of failure of the vertical clamping force due to friction and wear of the gear end face.

Description

Technical Field

[0001] The present invention belongs to the technical field of fastening equipment, and more specifically, relates to an adaptive clamping system and method. Background Art

[0002] The pinion on the screw press is a component that has both high-speed rotation and friction and slipping functions. At present, most of them use a clamping device composed of disc springs and locking nuts to clamp the pinion, in which the disc spring is located between the locking nut and the pinion. Its working principle is to compress the disc spring by adjusting the height position of the locking nut on the motor shaft, and then to clamp the pinion. When the compression amount of the disc spring is adjusted to the right position, the position of the locking nut is also fixed.

[0003] However, during the operation of the press, the pinion gear will rub and wear against the slipping mechanism due to frequent forward and reverse rotation, which will reduce the effective thickness of the pinion gear, eventually increasing the distance between the locking nut and the end face of the pinion gear, causing the disc spring to relax and causing the effective clamping force applied to the pinion gear to decay rapidly, thus bringing huge safety hazards to the normal operation of the press. In addition, the press needs to be shut down regularly to replace the disc spring, which affects the working efficiency of the screw press. Summary of the invention

[0004] In response to the above defects or improvement needs of the prior art, the present invention provides an adaptive clamping system and method, in which a clamping device clamps an object and monitors its air pressure signal in real time, and transmits the air pressure signal to a control module. The control module adjusts the pressure stabilizing device in real time according to the collected air pressure data until the clamping force between the clamping device and the object is constant, thereby realizing adaptive clamping adjustment of the object.

[0005] In order to achieve the above-mentioned object, according to one aspect of the present invention, an adaptive clamping system is provided, comprising a clamping device, a voltage stabilizing device and a control module, wherein the control module is in communication connection with the clamping device and the voltage stabilizing device; wherein:

[0006] The clamping device comprises a clamping cylinder and a rotary joint arranged at the top of the clamping cylinder, wherein the clamping cylinder comprises a cylinder body and a piston body, wherein the piston body is sleeved on the motor shaft and can rotate with the motor shaft; the rotary joint comprises a rotating body and a shell, wherein the rotating body is fixedly connected to the piston body, and the shell is connected to the pressure stabilizing device through a pipe joint;

[0007] The piston body is provided with a first air passage, the pressure stabilizing device is connected with the air inlet chamber through the first air passage, and the air pressure in the air inlet chamber is regulated by the coordinated action of the control module and the pressure stabilizing device;

[0008] A second air passage is provided in the piston body, and the exhaust chamber is connected to the outside through the second air passage;

[0009] The clamping device clamps the object and monitors the air pressure signal in real time. The control module is used to control the action of the pressure stabilizing device according to the air pressure signal, adjust the air pressure of the clamping device, ensure that the clamping force between the clamping device and the object is constant, and realize adaptive clamping of the object.

[0010] Furthermore, the piston body includes a piston and a piston end cover, and the first air channel and the second air channel are matched with the piston body structure. The upper end of the piston end cover is connected to the rotary joint, and the lower end is fixed to the piston.

[0011] Furthermore, the cylinder body is one-stage, or a partition is added therein to form a two-stage or multi-stage cylinder body structure, the two-stage cylinder body structure includes an upper cylinder barrel and a lower cylinder barrel, and the corresponding piston body includes an upper piston and a lower piston, and the air intake chamber and the exhaust chamber are divided into two-stage chambers by the partition.

[0012] Furthermore, the cylinder body comprises an upper cylinder cover, a cylinder barrel and a lower cylinder cover, and the upper cylinder cover and the lower cylinder cover are respectively arranged at two ends of the cylinder barrel and are fixedly connected by locking bolts.

[0013] Furthermore, the rotary joint comprises an inner tube, one end of which is connected to the pressure stabilizing device, and the other end of which passes through the rotary joint and is connected to the first airway.

[0014] Furthermore, an air pressure sensor is provided in the rotary joint.

[0015] Furthermore, a expansion sleeve is provided between the piston body and the motor shaft.

[0016] According to another aspect of the present invention, an adaptive compaction method is provided, which is implemented by applying the system, and includes the following steps:

[0017] S100: The system starts to take in air and monitors the intake pressure signal;

[0018] S200: The control module determines whether the pressure is constant according to the intake pressure signal;

[0019] S300: If the air pressure value is less than the set threshold, the control module controls the pressure stabilizing device to operate, the booster valve opens, and the air pressure in the system is compensated to maintain the air pressure in the cylinder constant, thereby maintaining the clamping force constant;

[0020] S400: If the air pressure value is greater than the set threshold, the control module controls the pressure stabilizing device to operate, the overflow valve opens, and a portion of the gas in the system is discharged to maintain a constant air pressure in the cylinder, thereby maintaining a constant clamping force.

[0021] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0022] 1. In the adaptive clamping system of the present invention, the clamping device clamps the object and monitors its air pressure signal in real time, and transmits the air pressure signal to the control module. The control module adjusts the action of the pressure stabilizing device in real time according to the air pressure information until the clamping force between the clamping device and the object is constant, thereby realizing adaptive clamping adjustment of the object.

[0023] 2. The adaptive clamping system of the present invention adopts a cylinder output working mode. As long as the air pressure of the high-pressure gas connected is ensured to be constant, the vertical clamping force on the gear can be guaranteed to be constant, which effectively solves the problem of vertical clamping force failure due to friction and wear on the gear end face, and greatly improves the safety and stability of the screw press operation.

[0024] 3. The adaptive clamping system of the present invention adopts a working mode of a hollow piston and a piston-stationary cylinder movement, which ingeniously realizes the functions of fixing the pneumatic clamping device and the vertical clamping gear. It has a simple structure and is easy to process and disassemble.

[0025] 4. The adaptive clamping system of the present invention is designed with a multi-cavity force-enhancing structure. When the air pressure of the incoming gas and the diameter of the clamped gear are limited, the clamping force can be easily increased by several times, thus meeting the working requirements of large clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a first embodiment of an adaptive clamping system of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a second embodiment of an adaptive clamping system of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of a rotary joint in an embodiment of the invention;

[0029] Figure 4 4 is a flow chart of the adaptive compaction method in an embodiment of the present invention.

[0030] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-rotating joint, 2-piston end cover, 3-locking bolt, 4-upper cylinder head, 5-cylinder barrel, 6-exhaust chamber, 7-expansion sleeve, 8-intake chamber, 9-lower cylinder head, 10-piston, 11-gear, 12-motor shaft, 13-upper cylinder barrel, 14-lower cylinder barrel, 15-upper piston, 16-partition, 17-lower piston, 18-first air duct, 19-second air duct, 101-rotating body, 102-housing, 103-air pressure sensor, 104-inner tube. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Embodiment 1 of the present invention provides an adaptive clamping system, including a control module, a clamping device and a pressure stabilizing device, wherein the control module is communicatively connected with the pressure stabilizing device and the clamping device, the clamping device clamps the object and monitors its air pressure signal in real time, and transmits the air pressure signal to the control module, and the control module regulates the action of the pressure stabilizing device in real time according to the air pressure information until the clamping force between the clamping device and the object is constant, thereby realizing adaptive clamping adjustment of the object.

[0033] Specifically, if Figure 1 As shown, in the first embodiment of the present invention, the clamping device includes a piston end cover 2, an upper end cover 4, a lower end cover 9, a cylinder barrel 5 and a piston 10. The upper end cover 4 and the lower end cover 9 are respectively arranged at both ends of the cylinder barrel 5, and are fixedly connected by locking bolts 3 to form a cylinder body. The upper end of the piston 10 is connected to the piston end cover 2 to form a piston body, which is fixed to the motor shaft 12 by a tightening sleeve 7 and can rotate with the motor shaft 12.

[0034] Preferably, the top of the piston 10 is connected to the piston end cover 2 through threads and a sealing ring, and a rotary joint 1 is provided on the top of the piston end cover 2, and the rotary joint 1 is connected to the pressure stabilizing device. In addition, a first air channel 18 is provided on one side of the piston end cover 2 and the piston rod of the piston 10, one end of the first air channel 18 is connected to the rotary joint 1, and the other end is connected to the air inlet chamber 8. The bottom of the lower end cover 9 is the gear 11 of the screw press, and the high-pressure gas enters the air inlet chamber 8 through the rotary joint 1 and the first air channel 18, thereby driving the upper cylinder cover 4, the cylinder barrel 5 and the lower cylinder cover 9 to move downward as a whole to press the gear 11.

[0035] In addition, if Figure 1 As shown, a second air passage 19 is provided on the other side of the piston end cover 2 and the piston rod of the piston 10 , one end of the second air passage 19 is connected to the atmosphere, and the other end is connected to the exhaust chamber 6 .

[0036] In order to further increase the clamping force between objects and adapt to more working conditions, such as Figure 2As shown, the second embodiment of the present invention provides another clamping device, whose basic structure is similar to that of the first embodiment. The core idea is to set a partition in the cylinder body to form a multi-stage cylinder structure. When the pressure in the cylinder body is constant, the effective area of ​​the piston is increased, thereby increasing the output force. Specifically, the difference from the first embodiment is that a partition 16 is set between the upper cylinder head 4 and the lower cylinder head 9, the upper cylinder barrel 13 and the lower cylinder barrel 14 are respectively placed on both sides of the partition 16, and the upper piston 15 and the lower piston 17 are respectively placed inside the upper cylinder barrel 13 and the lower cylinder barrel 14, together with the upper cylinder head 4, the lower cylinder head 9 and the partition 16, two air intake chambers 8 and two exhaust chambers 6 are formed, thus increasing the effective action area of ​​the cylinder piston, thereby increasing the vertical clamping force. The adaptive clamping system of the present invention is designed with a multi-cavity force-enhancing structure. When the air pressure of the high-pressure gas connected and the diameter of the clamped gear are limited, the clamping force can be easily doubled, which is suitable for a large clamping force working environment.

[0037] In addition, if Figure 3 As shown, the rotary joint 1 includes a rotating body 101 and a housing 102. The rotating body 101 is connected to the piston end cover 2 and can rotate therewith, while the housing 102 is fixed. An inner tube 104 is provided in the rotary joint 1, one end of which is connected to the pressure stabilizing device and the other end is connected to the first air channel 18. Since the housing 102 does not rotate with the rotating body 101, the entanglement problem of the inner tube 104 is effectively avoided.

[0038] Preferably, an air pressure sensor 103 is provided inside the rotary joint 1, and the air pressure sensor 103 is used to monitor the air pressure signal of the inner tube 104 in real time, and transmit the air pressure signal to the control module. The control module controls the operation of the pressure stabilizing device according to the air pressure signal, so that the air pressure in the cylinder is maintained constant, thereby ensuring that the vertical clamping force on the gear 11 is constant, effectively solving the problem of failure of the vertical clamping force due to friction and wear on the end face of the gear 11.

[0039] Preferably, in one embodiment of the present invention, the pressure stabilizing device includes a boost valve and a relief valve, and the gas pressure in the cylinder is regulated by controlling the opening and closing of the two valves.

[0040] like Figure 4 As shown, in an embodiment of the present invention, an adaptive compression method is provided, comprising the following steps:

[0041] S100: The system starts to take in air and monitors the intake pressure signal;

[0042] S200: The control module determines whether the pressure is constant according to the intake pressure signal;

[0043] S300: If the air pressure value is less than the set threshold, the control module controls the pressure stabilizing device to operate, the booster valve is opened, and the air pressure in the system is compensated to maintain the air pressure in the cylinder constant, thereby maintaining the clamping force constant;

[0044] S400: If the air pressure value is greater than the set threshold, the control module controls the pressure stabilizing device to operate, the overflow valve opens, and a portion of the gas in the system is discharged to maintain a constant air pressure in the cylinder, thereby maintaining a constant clamping force.

[0045] Preferably, the control module can be implemented by an industrial computer or other types of controllers, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor calls the computer program in the memory, the steps provided in the above embodiment can be implemented. Of course, the electronic device can also include various necessary network interfaces, power supplies, and other components.

[0046] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0047] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0048] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. For ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0049] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

Claims

1. An adaptive clamping system, characterized in that: It includes a clamping device, a voltage stabilizing device and a control module, wherein the control module is in communication connection with the clamping device and the voltage stabilizing device; wherein, The clamping device comprises a clamping cylinder and a rotary joint arranged at the top of the clamping cylinder, wherein the clamping cylinder comprises a cylinder body and a piston body, wherein the piston body is sleeved on the motor shaft and can rotate with the motor shaft; the rotary joint comprises a rotating body and a shell, wherein the rotating body is fixedly connected to the piston body and rotates with the piston body, and the shell is connected to the pressure stabilizing device through a pipe joint and does not rotate with the rotating body; The cylinder body comprises an upper cylinder cover, a cylinder barrel and a lower cylinder cover, wherein the upper cylinder cover and the lower cylinder cover are respectively arranged at both ends of the cylinder barrel and are fixedly connected by locking bolts; The piston body comprises a piston and a piston end cover, wherein the upper end of the piston end cover is connected to the rotary joint, and the lower end is fixed to the piston; The piston end cover and one side of the piston rod of the piston are provided with a first air passage, the pressure stabilizing device is connected with the air inlet chamber through the first air passage, and the air pressure in the air inlet chamber is regulated by the coordinated action of the control module and the pressure stabilizing device; A second air passage is provided on the other side of the piston end cover and the piston rod of the piston, and the exhaust chamber is connected to the outside through the second air passage; The clamping device clamps the object and monitors the air pressure signal in real time. The control module is used to control the action of the pressure stabilizing device according to the air pressure signal, adjust the air pressure of the clamping device, ensure that the clamping force between the clamping device and the object is constant, and realize adaptive clamping of the object.

2. An adaptive clamping system according to claim 1, characterized in that: The cylinder body is one level.

3. The adaptive clamping system according to claim 1, characterized in that: A partition is added to the cylinder body to form a two-stage cylinder structure. The cylinder barrel of the two-stage cylinder structure includes an upper cylinder barrel and a lower cylinder barrel, and the corresponding piston body includes an upper piston and a lower piston. The air intake chamber and the exhaust chamber are divided into two-stage chambers by the partition.

4. The adaptive clamping system according to claim 1, characterized in that: A partition is added to the cylinder to form a multi-stage cylinder structure.

5. An adaptive clamping system according to any one of claims 1 to 4, characterized in that: The rotary joint comprises an inner tube, one end of which is communicated with the pressure stabilizing device, and the other end of which passes through the rotary joint and is communicated with the first airway.

6. An adaptive clamping system according to claim 5, characterized in that: An air pressure sensor is arranged inside the rotary joint.

7. An adaptive clamping system according to any one of claims 1 to 4, characterized in that: A expansion sleeve is arranged between the piston body and the motor shaft.

8. An adaptive clamping system according to any one of claims 1 to 4, characterized in that: The pressure stabilizing device comprises a pressure boosting valve and a relief valve.

9. An adaptive compaction method, characterized in that: The application is implemented according to the system described in any one of claims 1 to 8, comprising the following steps: S100: The system starts to take in air and monitors the intake pressure signal; S200: The control module determines whether the pressure is constant according to the intake pressure signal; S300: If the air pressure value is less than the set threshold, the control module controls the pressure stabilizing device to operate, the booster valve opens, and the air pressure in the system is compensated to maintain the air pressure in the cylinder constant, thereby maintaining the clamping force constant; S400: If the air pressure value is greater than the set threshold, the control module controls the pressure stabilizing device to operate, the overflow valve opens, and a portion of the gas in the system is discharged to maintain a constant air pressure in the cylinder, thereby maintaining a constant clamping force.

Images