Intelligent riveting equipment

Abstract

The intelligent riveting equipment is composed of a riveting mechanism, a riveting quality detection system and an intelligent processing system, wherein the riveting quality detection system and the intelligent processing system are arranged on the riveting mechanism. The riveting mechanism is composed of a riveting device and a gas-liquid power conversion device of a separated structure. The riveting quality detection system comprises a riveting displacement detection system and a riveting force detection system; and the intelligent processing system is in control connection with the riveting mechanism and the riveting quality detection system. According to the riveting equipment, intelligent detection of a riveting tool with compressed air as a power source is achieved, the riveting equipment has the functions of adjusting installation parameters, storing various parameter information in the riveting process, automatically detecting and judging the riveting quality, prompting riveting error information and the like, and potential safety hazards caused by human negligence are effectively avoided; the riveting equipment meets the requirements of various riveting products; the unfavorable conditions such as poor result repeatability are avoided, potential safety hazards are reduced, under the condition that the using function of an original riveting tool is not changed, riveting equipment is simpler to operate, and the working condition of a system can be detected in real time.

Description

Technical Field

[0001] The present invention belongs to the field of riveting and fastening technology, in particular to the field of riveting and fastening equipment design and manufacturing technology, and particularly relates to an intelligent rivet fastening connection equipment and its automatic monitoring technology, belongs to the riveting category (B21J), and specifically is an intelligent riveting equipment. Background Art

[0002] Carbon fiber subway vehicles involve the connection of multiple types of materials such as carbon fiber composite materials (CFRP), glassy carbon composite materials, aluminum alloys, titanium alloys, stainless steel, carbon steel, and structural steel. In carbon fiber subway vehicles, the assembly between composite / composite homogeneous or composite / metal heterogeneous parts needs to be achieved through point connection technology, and riveting is an important connection technology between composite / composite or composite / metal. At present, carbon fiber composite trains are mainly connected and assembled by riveting. There are many types, specifications, and quantities of rivets. The material categories and thickness combinations of riveting are diverse. Different rivets and different riveting combinations are affected by factors such as assembly gap, hole making state, and riveting parameters; riveting operations have many links and complex working conditions. The quality of riveted joints is also easily affected by factors such as working environment and construction conditions, resulting in fluctuations. Secondly, traditional riveting quality control mainly relies on manual measurement and detection, which not only has unfavorable conditions such as low detection efficiency and poor result repeatability, but also has delayed inspection results and untimely feedback of quality results, which has an adverse impact on the reliability of riveting quality and causes serious safety hazards. Therefore, it is very important to monitor the riveting process and detect the working status of the system in real time to achieve quality control.

[0003] Chinese patent application 201510939835.8 Intelligent riveting monitoring method and system discloses an intelligent riveting monitoring method and system. Its structure and monitoring method include: a pull wire, a draw rod or a laser displacement sensor is installed on the riveter oil cylinder, and the body and the pull wire are fixed on the oil cylinder and the piston respectively. A piezoelectric pressure sensor is provided between the oil outlet of the hydraulic pump and the oil inlet pipe of the riveter; or a through-type shaft pressure sensor is installed on the head of the riveter. A camera device is provided on the surface of the oil cylinder. A microcomputer processor is also provided. The electrical signal ends of the sensor, camera, etc. are all connected to the microcomputer; and the outlet is connected to the alarm. After the rivet is pre-installed and inserted, the riveter is started. The camera image is collected, and the microcomputer online recognition program is used to determine the riveting position point. After riveting, the displacement and pressure measurement data are input. Determine whether the displacement, riveting force and position point are qualified; if yes, the data is stored; if not, an alarm is issued. Automatic recognition of riveting position, quality, system failure and fault prompt is realized. Although this application has preliminarily solved the functions of automatic identification of riveting positions, quality monitoring, system failures, fault prompts, etc., its automatic identification of riveting positions has low accuracy. The installation of displacement sensors, pressure sensors, cameras and microcomputers on the riveter increases the weight of the riveter itself, which brings a burden to the user. At the same time, the monitoring system has a low degree of intelligence and only monitors hydraulically powered riveting tools. Summary of the invention

[0004] The present invention discloses an intelligent riveting device in view of the deficiencies of the prior art. The purpose of the present invention is to strengthen the quality inspection of riveted joints, improve the inspection efficiency, avoid unfavorable conditions such as poor result repeatability, reduce safety hazards, and enable the riveting tool to achieve single-button control without changing the original riveting tool function, and have the function of real-time detection of the system working status.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The intelligent riveting equipment is characterized by: it is composed of a riveting mechanism and a configured riveting quality detection system and an intelligent processing system; the riveting mechanism is composed of a riveter and a gas-liquid power conversion device of a separation structure;

[0007] The pneumatic-liquid power conversion device of the riveter and its separation structure comprises: the gun head and the gun head valve block of the riveter are directly connected with the working handle; the electromagnetic reversing valve button is arranged on the working handle; the gun head valve block is used to seal the lower end surface of the gun head and is provided with an oil channel communicating with the oil channel of the gun head; the cylinder valve block is used to seal the upper end surface of the cylinder handle and is provided with an oil channel communicating with the oil channel of the cylinder handle; one end of the lengthened oil pipe with adjustable length is connected with the oil channel of the working handle, and the other end is connected with the corresponding quick-connect connector installed on the joint valve block; the cylinder valve block is fixed on the cylinder handle, one end is connected with the joint valve block pipeline, and the other end is connected with the sensor pipeline of the displacement detection device; the plunger control cylinder is connected with the electromagnetic reversing valve through a pipeline; the plunger control cylinder is connected with the air source connector on the joint valve block through a pipeline; the external air supply source supplies air through an air source connector to provide hydraulic riveting power for the hydraulic mechanism of the riveter;

[0008] The riveting quality detection system includes a riveting displacement detection system and a riveting force detection system; the riveting displacement detection system obtains riveting displacement data through the sensor detection of the displacement detection device, and the sensor of the displacement detection device is connected to the joint valve block through a pipeline; the riveting force detection system obtains riveting force data through the pressure sensor detection;

[0009] The intelligent processing system is controlled and connected with the riveting mechanism and the riveting quality detection system.

[0010] Further, the displacement detection device includes a pulse sensor or a flow sensor; the pulse sensor or the flow sensor is installed between the oil return port of the gas-liquid power conversion device and the pressure oil outlet of the riveting device, or between the oil outlet of the gas-liquid power conversion device and the pressure oil inlet of the riveting device.

[0011] Another displacement detection device may also be a displacement sensor, which is installed at the head of the riveter or the piston of the riveter.

[0012] The intelligent processing system of the present invention includes an industrial computer; the industrial computer obtains the real-time displacement data of the riveting displacement detection system, forms and stores the real-time displacement data with time as the horizontal axis and displacement as the vertical axis, and compares the real-time displacement data with the standard to make a quality judgment, stores the qualified data, and gives an alarm prompt for unqualified data; the industrial computer obtains the real-time riveting force data of the riveting force detection system, forms and stores the real-time riveting force data with time as the horizontal axis and the riveting force as the vertical axis, and compares the real-time riveting force data with the standard to make a quality judgment, stores the qualified data, and gives an alarm prompt for unqualified data.

[0013] One end of the electromagnetic reversing valve of the present invention is connected to the air source connector on the connector valve block through a pipeline, and the opening and closing of the electromagnetic reversing valve is controlled by a button on the handle.

[0014] The air intake pipes of all gas-liquid power conversion devices of the present invention are connected to the air source connector on the connector valve block as the power source, and are connected to the electromagnetic reversing valve while passing through the cylinder base valve block. The gas is controlled by opening and closing the button on the working handle and connected to the plunger control cylinder through the reversing valve.

[0015] The joint valve block of the present invention is provided with a pressure sensor which is connected to the oil inlet passage of the joint valve block.

[0016] The electric signal line controlling the connection between the intelligent processing system of the present invention and the riveting mechanism and the riveting quality detection system is embedded in the handle together with two extended oil pipes. One end of the electric signal line is connected to the electromagnetic reversing valve button on the working handle, and the other end is connected to the industrial computer to control the action of the electromagnetic reversing valve.

[0017] The gun head valve block of the present invention is provided with a high-pressure valve body and a return valve body inside, respectively, and is closely connected with the inlet and outlet oil passages inside the gun head.

[0018] The working process of the present invention is:

[0019] After starting the intelligent riveting tool, press the solenoid reversing valve button on the working handle to control the solenoid reversing valve to open, and then control the single-acting cylinder to extend, push the reversing valve plunger downward, so that the piston rodless chamber in the cylinder base is inlet, and the booster piston is pushed upward, so that the hydraulic oil is pressurized and pushed out, and after passing through the extended oil pipe and the gun head valve block, it enters the original gun head oil inlet chamber, pushes the piston and claws in the original gun head to apply tension to the rivet, and the cylinder and anvil assembly apply thrust to the collar, so that the rivet and the collar are relatively displaced and the riveted parts are tightened. In this process, the pressure sensor and pulse sensor collect the original The hydraulic oil pressure and oil flow information in the oil inlet cavity or oil inlet of the gun head or the extended oil pipe or the oil outlet of the gas-liquid power conversion device are uploaded to the industrial computer to calculate the instant riveting force and riveting displacement, and the real-time data corresponding to the riveting displacement value and the riveting force value at the same time are obtained to generate the riveting force and riveting displacement relationship curve, which is compared and analyzed with the standard qualified curve stored in the system to complete the judgment of the riveting quality. The standard qualified curve is set as the standard value range, and the record within the standard value range is qualified, otherwise it is recorded as unqualified and an alarm prompt message is issued. After the riveting is in place, the button on the handle is released to switch the electromagnetic reversing valve, and then the single-acting cylinder is controlled to retreat, and the reversing valve plunger is pushed upward, so that the piston in the cylinder base has a rod cavity to enter the air, and the booster piston is pushed downward. At the same time, the gun head valve block acts, the hydraulic oil returns, and the piston and claws in the original gun head are reset to complete a riveting cycle.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] 1. The intelligent riveting tool developed by the present invention realizes intelligent detection of riveting tools with compressed air as the power source. It has the functions of adjusting installation parameters, storing various parameter information in the riveting process, automatically detecting and judging the riveting quality, and prompting riveting error information, which effectively avoids the safety hazards caused by human negligence.

[0022] 2. The present invention uses pressure sensors and pulse sensors to achieve accurate and reliable real-time collection of riveting displacement data and riveting force data. This method has a simple structure and is easy to install, which greatly simplifies the structure of the riveter and reduces the weight of the riveter, making it easier for operators to use.

[0023] 3. The intelligent riveting tool developed by the present invention realizes the traceability of rivet installation by storing and detecting the data during the riveting installation of the pneumatic riveting tool.

[0024] 4. The intelligent riveting tool developed by the present invention can be used not only for pull-off blind rivet type fasteners, but also for non-pull-off short-tail rivets, repeatable rivets and other product types to meet the needs of various products.

[0025] 5. The intelligent riveting tool developed by the present invention realizes the control of the operation of the pneumatic riveting tool by a single button without changing the original use function of the pneumatic riveting tool, and has the function of real-time detection of the working status of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Pneumatic riveting tool for prototypes;

[0027] Figure 2 The intelligent riveting tool of the present invention;

[0028] Figure 3 It is a flow chart of the intelligent riveting tool monitoring method;

[0029] Figure 4 This is the judgment rule diagram of the riveting quality inspection system;

[0030] Figure 5 Schematic diagram of the monitoring method.

[0031] The description of the accompanying drawings is as follows: 1 high-pressure valve body, 2 return valve body, 3 original button, 4 crank arm, 5 original air source interface, 6 original reversing valve plunger, 7 gun head; 8 gun head valve block, 9 working handle, 10 quick plug connector, 11 connector valve block, 12 pressure sensor, 13 pulse sensor or flow sensor, 14 cylinder valve block, 15 cylinder handle, 16 reversing valve plunger, 17 plunger control cylinder mounting seat, 18 solenoid reversing valve, 19 air source connector, 20 extended oil pipe, 21 solenoid reversing valve button, 22 air source, 23 intelligent processing system, 24 alarm, 25a to 25e signal and power transmission diagram, 26 control cylinder pipeline, 27 cylinder. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0033] As shown in the figure, the intelligent riveting equipment of the present invention is composed of a riveting mechanism and a configured riveting quality detection system and an intelligent processing system; the riveting mechanism is composed of a riveter and a gas-liquid power conversion device of a separation structure.

[0034] The riveter is used to fix the riveted parts by extruding rivets, wherein the gun head and gun head valve block of the riveter are directly connected to the working handle; the electromagnetic reversing valve button is arranged on the working handle; the gun head valve block and the cylinder valve block are used to seal the lower end surface of the gun head and the upper end surface of the cylinder handle, and the internal oil passages of both are connected to the oil passages of the gun head and the cylinder handle; one end of the extended oil pipe is connected to the oil passage of the working handle, and the other end is connected to the corresponding quick-connect connector installed on the joint valve block; the pulse sensor of the displacement detection device is connected to the joint valve block through a pipeline; the cylinder valve block is fixed on the cylinder handle, one end is connected to the joint valve block pipeline, and the other end is connected to the pulse sensor pipeline; the plunger control cylinder is connected to the electromagnetic reversing valve through a pipeline; the plunger control cylinder is directly connected to the plunger control cylinder mounting seat, and is connected to the air source connector on the joint valve block through a pipeline.

[0035] The gas-liquid power conversion device is used to provide hydraulic riveting power to the riveter. It uses gas as the power source and converts the gas power into more stable, more load-bearing, and less compressible hydraulic power through a mechanical structure, thereby better providing riveting power for the riveter.

[0036] The riveting quality detection system is subdivided into a riveting displacement detection system and a riveting force detection system; the riveting displacement detection system detects the riveting displacement through a pulse sensor, uploads the instantaneous flow data of each riveting position to the intelligent processing system in the form of pulses, converts it into instantaneous displacement data, and performs real-time detection. The riveting force detection system detects the riveting force through a pressure sensor, uploads the instantaneous pressure data of each riveting position to the intelligent processing system, converts it into instantaneous riveting force data, and performs real-time detection.

[0037] The intelligent processing system includes an industrial computer, which obtains the real-time displacement data of the riveting displacement detection system, forms and stores the real-time displacement data in sequence with time as the horizontal axis and displacement as the vertical axis, and compares the real-time displacement data with the standard to make a quality judgment, stores qualified data, and gives an alarm prompt for unqualified data; the industrial computer obtains the real-time riveting force data of the riveting force detection system, forms and stores the real-time riveting force data in sequence with time as the horizontal axis and riveting force as the vertical axis, and compares the real-time riveting force data with the standard to make a quality judgment, stores qualified data, and gives an alarm prompt for unqualified data.

[0038] One end of the solenoid reversing valve is connected to the air source connector on the joint valve block through a pipeline. The solenoid reversing valve is controlled to open by the button on the handle, thereby controlling the extension of the single-acting cylinder, pushing the reversing valve plunger to move, so that the rodless chamber of the piston in the cylinder base is filled with air, pushing the booster piston downward.

[0039] The joint valve block, the pulse sensor, the electromagnetic reversing valve, the original cylinder handle and the cylinder are uniformly installed and fixed on a box body which is separated from the gun head structure.

[0040] The displacement detection device adopts a pulse sensor, a flow sensor or a displacement sensor. Among them, the displacement detection device is a pulse sensor or a flow sensor installed between the oil return port of the gas-liquid power conversion device and the pressure oil outlet of the riveter, or installed between the oil outlet of the gas-liquid power conversion device and the pressure oil inlet of the riveter; the specific principle is: the pulse sensor or the flow sensor obtains the flow value during the riveting process, and then obtains the volume of liquid entering the piston oil chamber through integral conversion. According to the incompressibility of the hydraulic oil, the displacement value of the rivet gun piston can be converted, that is, the riveting displacement. Or, the displacement sensor is installed on the riveter gun head or the rivet gun piston. By detecting the riveting displacement information of the gun head or the piston, the displacement sensor directly obtains the displacement value of the rivet gun piston.

[0041] The gas circuits are integrated into a box with a separate structure. The air intake pipeline is connected to the air source connector on the connector valve block as a power source, and is connected to the electromagnetic reversing valve while passing through the cylinder base valve block. By pressing the button on the working handle, the control gas is connected to the plunger control cylinder through the reversing valve.

[0042] A pressure sensor is installed on the joint valve block, which is directly connected to the oil inlet channel of the joint valve block. A pulse sensor or flow sensor connected to the working oil is installed, or a displacement sensor is installed at the riveting gun head or the rivet gun piston to control the back-end program or detect the working status of the equipment.

[0043] The riveting force detection device is a pressure sensor installed between the oil outlet of the gas-liquid power conversion device and the pressure oil inlet of the riveter. It detects the riveting oil pressure and obtains the riveting force, or directly obtains the riveting force through a force sensor located on the oil cylinder or piston.

[0044] The flow sensor, pressure sensor and pulse sensor of the present invention can obtain corresponding data stably, reliably and accurately without any improvement to the riveter. Compared with other structures, the structure of the riveting equipment can be simplified and the weight of the riveting tool can be reduced to a greater extent.

[0045] The oil circuit of the gun head is directly connected to one end of the extended oil pipe through the gun head valve block. After passing through the extended oil pipe, it is connected to the corresponding quick-connect connector installed on the connector valve block through the quick-connect connector at the other end of the extended oil pipe, and is connected to the original cylinder handle oil circuit through the pulse sensor and the cylinder valve block oil circuit.

[0046] The industrial computer is the core of the intelligent processing system, and has the functions of collecting, processing, analyzing, judging, storing and outputting the signals transmitted by the sensors. Various sensors can obtain the riveting displacement data and riveting force data through fixed program conversion, and the data are accurate and reliable.

[0047] The intelligent riveting equipment of the present invention is described below with a specific example.

[0048] like Figure 1 Shown, prototype pneumatic riveting tool.

[0049] like Figure 2 As shown, the intelligent riveting equipment includes: a gun head valve block 8, a working handle 9, an electromagnetic reversing valve button 21, an extended oil pipe 20, a quick-connect connector 10, a connector valve block 11, a pressure sensor 12, a pulse sensor 13, a reversing valve plunger 16, a plunger control cylinder mounting seat 17, a plunger control cylinder 27, an electromagnetic reversing valve 18, an air pipe assembly, a box body, a riveting quality detection system and an intelligent processing system 23.

[0050] The principle of intelligent riveting tools is as follows:

[0051] The gun head valve block 8 and the cylinder valve block 14 are used to seal the lower end surface of the original gun head 7 and the upper end surface of the original cylinder handle 15. The internal oil passages of both are connected to the oil passages of the original gun head 7 and the original cylinder handle 15. The oil passage of the cylinder valve block 14 is connected to the joint valve block 11 through the pulse sensor 13. The joint valve block 11 is equipped with a corresponding quick-connect connector 10, which is used in conjunction with one end of the extended oil pipe 20 with the quick-connect connector 10. The other end of the extended oil pipe 20 is directly connected to the gun head valve block 8, and finally the oil passage of the original gun head 7 is connected to the oil passage of the original cylinder handle 15 through the extended oil pipe 20.

[0052] All gas circuits are integrated into a box. The air inlet pipeline is connected to the air source connector 19 on the connector valve block 11, and is connected to the electromagnetic reversing valve 18 while passing through the cylinder base valve block. By pressing the electromagnetic reversing valve button 21 on the working handle 9, the gas is controlled to pass through the electromagnetic reversing valve 18 to connect to the plunger control cylinder 27, and at the same time, the opening and closing of the working cycle of the riveting quality detection system and the intelligent processing system 23 are controlled. This realizes the single-button control of the pneumatic riveting tool without changing the original pneumatic riveting tool function, and has the function of real-time detection of the system working status.

[0053] A pressure sensor 12 is installed on the joint valve block 11, and a pulse sensor 13 connected to the working oil is installed to control the back-end program or detect the working status of the equipment.

[0054] A reversing valve plunger 16 of a single-acting cylinder plunger is installed above the cylinder base. After the improvement, after starting the intelligent riveting tool, the riveting quality detection system and the intelligent processing system 23 are started, and enter the working cycle waiting state. The electromagnetic reversing valve button 21 on the working handle 9 is pressed to control the start of the riveting quality detection system and the intelligent processing system 23 working cycle, and at the same time control the electromagnetic reversing valve 18 to open, and then control the single-acting cylinder to extend, push the reversing valve plunger 16 downward, so that the rodless cavity of the piston in the cylinder base is inlet, and the booster piston is pushed upward, so that the hydraulic oil is pressurized and pushed out, and after passing through the extended oil pipe 20 and the gun head valve block 8, it enters the original gun head. 7 oil inlet chamber, push the piston and claw in the original gun head 7 to apply tension to the rivet, the oil cylinder and anvil assembly to apply thrust to the collar, so that the rivet and the collar are relatively displaced and the riveted parts are fastened. In this process, the pressure sensor 12 and the pulse sensor 13 collect the hydraulic oil pressure and oil flow information in the oil inlet chamber or oil inlet of the original gun head 7 or the extended oil pipe 20 or the oil outlet of the gas-liquid power conversion device in real time, upload it to the industrial computer, calculate the instant riveting force and riveting displacement, and the riveting force and riveting displacement collection and judgment system compares and analyzes the curve relationship generated by the riveting force and riveting displacement with the qualified curve stored in the system, so as to complete the judgment of the riveting quality. The standard qualified curve is set as the standard value range, and the records within the standard value range are qualified, otherwise they are recorded as unqualified and an alarm prompt message is issued. After riveting in place, release the electromagnetic reversing valve button 21, the riveting quality inspection system and the intelligent processing system 23 close the current working cycle, and enter the standby state for the next working cycle. At the same time, the electromagnetic reversing valve 18 switches, and then controls the single-acting cylinder to retreat, pushing the reversing valve plunger 16 upward, so that the piston in the cylinder base has air in the rod chamber, pushing the booster piston downward, and at the same time the gun head valve block 8 acts, the hydraulic oil returns, and the piston and claws in the original gun head 7 are reset to complete a riveting cycle.

[0055] like Figure 3 As shown in the figure, the improved intelligent riveting tool collects real-time hydraulic oil pressure and oil flow information through force sensors, pressure sensors, and pulse sensors, and uploads it to the data acquisition system. The data acquisition system further uploads it to the intelligent processing system, converts the hydraulic oil pressure and oil flow information into real-time riveting force data and riveting displacement data according to a fixed program, and forms and stores the real-time riveting force data and riveting displacement data in the order of time as the horizontal axis and riveting force and riveting displacement as the vertical axis. At the same time, the real-time riveting force data and riveting displacement data are generated into a curve relationship diagram with riveting displacement as the horizontal axis and riveting force as the vertical axis, and compared and analyzed with the qualified curve stored in the system, so as to complete the judgment of the riveting quality. The standard qualified curve is set as the standard value range, and the records within the standard value range are qualified, otherwise they are recorded as unqualified and an alarm prompt message is issued.

[0056] like Figure 4As shown, the intelligent riveting tool generates a curve relationship diagram with riveting displacement as the horizontal axis and riveting force as the vertical axis from the real-time riveting force data and riveting displacement data. The riveting force and riveting displacement curve relationship diagram is generated and displayed in real time as the riveting progresses. After the riveting force and riveting displacement curve relationship diagram is generated, it is compared and analyzed with the qualified curve stored in the system to complete the judgment of the riveting quality. The standard qualified curve is set as the standard value range, and the records within the standard value range are qualified. The standard value range identification is divided into three aspects. First, it is detected whether the riveting force value of point C is less than the maximum riveting force setting value. Secondly, it is detected whether the values ​​of points A and B are located at the key point. Finally, it is determined whether the curve is in areas Ⅰ, Ⅱ, and Ⅲ. The three parameters are compared with the standard value range data in the system to judge the quality of the riveting process. The records within the standard value range are qualified, otherwise they are recorded as unqualified and an alarm prompt message is issued.

[0057] like Figure 5 As shown, the horizontal axis Y is the pressure value, the vertical axis is the displacement value, B1 and B2 are the standard value ranges set by the standard qualified curve, X1 is the qualified riveting data, and X2 is the unqualified riveting data. The riveting force and riveting displacement curve is qualified within the standard value range set by the B1 and B2 standard qualified curves.

[0058] Compared with the prototype pneumatic riveting tool, the intelligent riveting device of the embodiment of the present invention has the following functions and advantages: 1. It has the functions of adjusting installation parameters, storing various parameter information in the riveting process, automatically detecting and judging the riveting quality, and prompting riveting error information, which effectively avoids the safety hazards caused by human negligence; 2. The pressure sensor and pulse sensor adopted realize the accurate and reliable real-time collection of riveting displacement data and riveting force data, and this method has a simple structure and convenient installation, greatly simplifies the structure of the riveter and reduces the weight of the riveter, which is convenient for the operator to use; 3. The storage and detection of the data during the riveting installation of the pneumatic riveting tool are realized, and the traceability of the rivet installation is realized; 4. The intelligent riveting device and riveting method of the embodiment of the present invention can be used not only for pull-off blind riveting type fasteners, but also for non-pull-off short-tail rivets, repeatable rivets and other product types, meeting the needs of various products; 5. It realizes the single button control of the pneumatic riveting tool without changing the original pneumatic riveting tool use function, and has the function of real-time detection of the working status of the system.

Claims

1. Intelligent riveting equipment, characterized by: It is composed of a riveting mechanism and a configured riveting quality detection system and an intelligent processing system; the riveting mechanism is composed of a riveter and a gas-liquid power conversion device of a separate structure; The pneumatic-liquid power conversion device of the riveter and its separation structure comprises: the gun head and the gun head valve block of the riveter are directly connected with the working handle; the electromagnetic reversing valve button is arranged on the working handle; the gun head valve block is used to seal the lower end surface of the gun head and is provided with an oil channel communicating with the oil channel of the gun head; the cylinder valve block is used to seal the upper end surface of the cylinder handle and is provided with an oil channel communicating with the oil channel of the cylinder handle; one end of the lengthened oil pipe with adjustable length is connected with the oil channel of the working handle, and the other end is connected with the corresponding quick-connect connector installed on the joint valve block; the cylinder valve block is fixed on the cylinder handle, one end is connected with the joint valve block pipeline, and the other end is connected with the sensor pipeline of the displacement detection device; the plunger control cylinder is connected with the electromagnetic reversing valve through a pipeline; the plunger control cylinder is connected with the air source connector on the joint valve block through a pipeline; the external air supply source supplies air through an air source connector to provide hydraulic riveting power for the hydraulic mechanism of the riveter; The riveting quality detection system includes a riveting displacement detection system and a riveting force detection system; the riveting displacement detection system obtains riveting displacement data through the sensor detection of the displacement detection device, and the sensor of the displacement detection device is connected to the joint valve block through a pipeline; the riveting force detection system obtains riveting force data through the pressure sensor detection; The intelligent processing system is controlled and connected with the riveting mechanism and the riveting quality detection system.

2. The intelligent riveting equipment according to claim 1 is characterized in that: The displacement detection device includes a pulse sensor or a flow sensor; the pulse sensor or the flow sensor is installed between the oil return port of the gas-liquid power conversion device and the pressure oil outlet of the riveting device, or between the oil outlet of the gas-liquid power conversion device and the pressure oil inlet of the riveting device.

3. The intelligent riveting equipment according to claim 1 is characterized in that: The displacement detection device may also be a displacement sensor, and the displacement sensor is installed at the head of the riveter or the piston of the riveter.

4. The intelligent riveting equipment according to claim 1 is characterized in that: The intelligent processing system includes an industrial computer; the industrial computer obtains the real-time displacement data of the riveting displacement detection system, forms and stores the real-time displacement data with time as the horizontal axis and displacement as the vertical axis, and compares the real-time displacement data with the standard to make a quality judgment, stores qualified data, and gives an alarm prompt for unqualified data; The industrial computer obtains the real-time riveting force data of the riveting force detection system, forms and stores the real-time riveting force data with time as the horizontal axis and riveting force as the vertical axis, and compares the real-time riveting force data with the standard to make a quality judgment, stores qualified data, and issues an alarm for unqualified data.

5. The intelligent riveting equipment according to claim 1 is characterized in that: One end of the electromagnetic reversing valve is connected to the air source connector on the connector valve block through a pipeline, and the opening and closing of the electromagnetic reversing valve is controlled by a button on the handle.

6. The intelligent riveting equipment according to claim 1 is characterized in that: The air inlet pipes of all gas-liquid power conversion devices are connected to the air source connector on the joint valve block as the power source, and are connected to the electromagnetic reversing valve while passing through the cylinder base valve block. The gas is opened and closed by the button on the working handle to control the gas through the reversing valve and the plunger control cylinder.

7. The intelligent riveting equipment according to claim 1 is characterized in that: A pressure sensor is installed on the joint valve block and is connected to the oil inlet passage of the joint valve block.

8. The intelligent riveting equipment according to claim 1 is characterized in that: The electric signal line that controls and connects the intelligent processing system with the riveting mechanism and the riveting quality detection system is embedded in the handle together with two extended oil pipes. One end of the electric signal line is connected to the electromagnetic reversing valve button on the working handle, and the other end is connected to the industrial computer to control the action of the electromagnetic reversing valve.

9. The intelligent riveting equipment according to claim 1, characterized in that: The gun head valve block is provided with a high-pressure valve body and a return valve body respectively, and is closely connected with the inlet and outlet oil passages inside the gun head.

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