An intelligent control fixture device and control system for automated production line

Abstract

The present invention discloses an intelligent control fixture device and control system for an automated production line. The control system includes a numerical control device, an air circuit control device and an intelligent control fixture device. The control fixture is installed on a workbench inside a housing of the numerical control device, and the air circuit control device is installed on the outside of the housing; the air circuit control device connects the intelligent control fixture and the numerical control device; the numerical control device controls the air circuit control device to output a corresponding working air pressure according to a preset working mode, and the working air pressure is transmitted to a corresponding channel inside the intelligent control fixture. The intelligent control fixture performs control detection set by the working mode according to the working air pressure in the corresponding channel, and the air circuit control device feeds back the detection result to the numerical control device. The intelligent control fixture can be linked and detected with the air circuit control device and the numerical control device; the problem that the existing fixture device cannot be linked and tested with other devices is solved.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and in particular to an intelligent control fixture device and a control system for an automated production line. Background Art

[0002] With the development of industrial automation production, fixtures are a key part of ensuring quality and efficiency. However, due to the ever-changing parts produced, no fixture can be applied to all parts. Each fixture supplier needs to design fixtures that are suitable for the company's products. However, the existing fixtures only have the functions of positioning and clamping products, and cannot be linked and inspected with other equipment, which cannot meet the needs of automated production.

[0003] Therefore the prior art still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an intelligent control fixture device and a control system for an automated production line, so as to solve the problem that the existing fixture device cannot be linked and detected with other equipment.

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

[0006] An intelligent control fixture device for an automated production line comprises a fixture base, a zero-point positioning device, a rivet and a support plate; the fixture base is fixed on a workbench of a numerical control device, the zero-point positioning device is correspondingly installed in a mounting groove of the fixture base, the rivet is fixed to the bottom surface of the support plate, the position of the rivet is opposite to a centering hole of the zero-point positioning device, the rivet is correspondingly inserted into the centering hole, the zero-point positioning device is clamped between the fixture base and the support plate, a plurality of passages composed of a plurality of air pipes are arranged in the fixture base, one end of each passage is connected to the zero-point positioning device, and the other end of each passage is connected to an air path control device via an external air pipe.

[0007] In the intelligent control fixture device for the automated production line, the passage includes a piston clamping detection passage, a central air blowing cleaning passage, a fixture opening passage, an airtight detection passage, a clamping pressurization passage, and a piston release detection passage;

[0008] Six transmission ports are correspondingly arranged on one side of the fixture base, the input end of each passage is connected to the corresponding transmission port, the output end of each passage is connected to the corresponding port of zero point positioning, and the air path control device is connected to the six transmission ports through an air pipe.

[0009] In the intelligent control fixture device for the automated production line, a positioning key is provided on the back of the fixture base, and the positioning key of the fixture base is inserted into a positioning grid on the workbench for positioning.

[0010] In the intelligent control fixture device for the automated production line, a mounting hole penetrating the fixture base is also provided on the back of the fixture base, the mounting hole is aligned with the screw hole on the workbench, and screws are screwed into the mounting hole and the screw hole for screwing and fixing.

[0011] In the intelligent control fixture device for the automated production line, the surface of the zero-point positioning device has a first screw hole, and the surrounding of the mounting groove has a second screw hole adapted to the first screw hole. The bottom of the zero-point positioning device is placed in the mounting groove, and the first screw hole and the second screw hole are aligned and then screwed in to fix them.

[0012] In the intelligent control fixture device for the automated production line, a movable sheet is arranged on one side of each first screw hole, one end of the movable sheet is fixed to the fixture base through a fulcrum, and the other end of the movable sheet rotates around the fulcrum to cover the first screw hole.

[0013] In the intelligent control fixture device for the automated production line, a central through hole is provided at the center of the mounting groove, and the central through hole is connected to the central air blowing cleaning passage in the fixture base.

[0014] In the intelligent control fixture device for the automated production line, the gas circuit control device includes a gas circuit control base plate, on which are installed a first pressure detection switch, a second pressure detection switch, a third pressure detection switch, a first two-position two-way solenoid valve, a second two-position two-way solenoid valve, a third two-position two-way solenoid valve, a fourth two-position two-way solenoid valve, a three-position five-way solenoid valve, a first pressure reducing valve, a second pressure reducing valve, a third pressure reducing valve, a first flow valve, a second flow valve and a third flow valve;

[0015] The air inlet of the three-position five-way solenoid valve is connected to the air source, the first air outlet of the three-position five-way solenoid valve is connected to the clamping and boosting port of the zero point positioning through the clamping and boosting passage, the second air outlet of the three-position five-way solenoid valve is connected to the opening fixture port of the zero point positioning through the opening fixture passage, and the control end of the three-position five-way solenoid valve is connected to the numerical control device;

[0016] The air inlet of the first two-position two-way solenoid valve is connected to the air source, the air outlet of the first two-position two-way solenoid valve is connected to the central through hole of the zero point positioning through the central air blowing cleaning passage, and the control end of the first two-position two-way solenoid valve is connected to the numerical control device;

[0017] The air inlet of the second two-position two-way solenoid valve is connected to the air source, and the air outlet of the second two-position two-way solenoid valve is connected to the clamping detection port of the zero point positioning through the first flow valve, the first pressure reducing valve, the first pressure detection switch, and the piston clamping detection passage in sequence; the communication end of the second two-position two-way solenoid valve, the communication end of the first flow valve, the communication end of the first pressure reducing valve, and the communication end of the first pressure detection switch are all connected to the numerical control device;

[0018] The air inlet of the third two-position two-way solenoid valve is connected to the air source, and the air outlet of the third two-position two-way solenoid valve is connected to the release detection port of the zero point positioning through the second flow valve, the second pressure reducing valve, the second pressure detection switch, and the piston release detection passage in sequence; the communication end of the third two-position two-way solenoid valve, the communication end of the second flow valve, the communication end of the second pressure reducing valve, and the communication end of the second pressure detection switch are all connected to the numerical control device;

[0019] The air inlet of the fourth two-position two-way solenoid valve is connected to the air source, and the air outlet of the fourth two-position two-way solenoid valve is connected to the airtight detection port for zero point positioning through the third flow valve, the third pressure reducing valve, the third pressure detection switch, and the airtight detection passage in sequence; the communication end of the fourth two-position two-way solenoid valve, the communication end of the third flow valve, the communication end of the third pressure reducing valve, and the communication end of the third pressure detection switch are all connected to the CNC device.

[0020] A control system for an automated production line, comprising a numerical control device, an air circuit control device and the intelligent control fixture device for the automated production line, wherein the control fixture is mounted on a workbench inside a housing of the numerical control device, and the air circuit control device is mounted on the outside of the housing; the air circuit control device connects the intelligent control fixture and the numerical control device;

[0021] The numerical control equipment controls the air circuit control device to output the corresponding working air pressure according to the preset working mode. The working air pressure is transmitted to the corresponding channel inside the intelligent control fixture. The intelligent control fixture performs the control detection set by the working mode according to the working air pressure in the corresponding channel, and the air circuit control device feeds back the detection result to the numerical control equipment.

[0022] In the control system for the automated production line, the working modes include a central air blowing cleaning mode, a clamp opening mode, a clamping and pressurizing mode, a piston clamping detection mode, an airtight detection mode, and a piston loosening detection mode.

[0023] Compared with the prior art, the present invention provides an intelligent control fixture device and control system for an automated production line, the control system comprising a numerical control device, an air circuit control device and an intelligent control fixture device, the control fixture is installed on a workbench inside the housing of the numerical control device, and the air circuit control device is installed on the outside of the housing; the air circuit control device connects the intelligent control fixture and the numerical control device; the numerical control device controls the air circuit control device to output the corresponding working air pressure according to a preset working mode, the working air pressure is transmitted to the corresponding channel inside the intelligent control fixture, the intelligent control fixture performs the control detection set by the working mode according to the working air pressure in the corresponding channel, and the air circuit control device feeds back the detection result to the numerical control device. The intelligent control fixture can be linked and detected with the air circuit control device and the numerical control device; it solves the problem that the existing fixture device cannot be linked and tested with other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a control system provided by the present invention.

[0025] Figure 2 This is a schematic structural diagram of the intelligent control fixture device provided by the present invention.

[0026] Figure 3 A schematic diagram of the bottom surface of a fixture base in the intelligent control fixture device provided by the present invention.

[0027] Figure 4 A schematic diagram of the front side of a fixture base in the intelligent control fixture device provided by the present invention.

[0028] Figure 5 A schematic diagram of six passages in the clamp base provided by the present invention.

[0029] Figure 6 A schematic diagram of the connection between the air path control device and the zero point positioning provided by the present invention. DETAILED DESCRIPTION

[0030] The present invention provides an intelligent control fixture device and control system for an automated production line. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Please also see Figures 1 to 4, a control system for an automated production line provided in this embodiment includes an intelligent control fixture 710, a numerical control device 720 and an air circuit control device 730; the control fixture 710 is installed on a workbench 740 inside the housing of the numerical control device 720, and the air circuit control device 730 is installed (screwed and fixed) on the outside of the housing; the air circuit control device 730 connects the intelligent control fixture 710 and the numerical control device 720. The numerical control device 720 (internal controller, such as PLC (programmable logic controller)) controls the air circuit control device 730 to output the corresponding working air pressure according to the preset working mode, and the working air pressure is transmitted to the corresponding channel air circuit inside the intelligent control fixture 710, and the intelligent control fixture 710 performs the control detection set by the working mode according to the working air pressure in the corresponding channel, and one channel performs one control detection, and the air circuit control device 730 feeds back the detection result to the numerical control device 720. In this way, the intelligent control fixture 710 can be linked and tested with the air circuit control device 730 and the numerical control device 720, which solves the problem that the existing fixture device only has the function of positioning and clamping the product and cannot be linked and tested with other equipment.

[0032] Among them, the working modes include 1 functional mode (central air blowing cleaning mode), 2 control modes (opening fixture mode and clamping pressurization mode) and 3 detection modes (piston clamping detection mode, airtight detection mode and piston release detection mode). The size, duration, and interruption time of the working air pressure output in different modes are set according to the functional requirements. The piston clamping detection air circuit, central air blowing cleaning air circuit, opening fixture air circuit, airtight detection air circuit, clamping pressurization air circuit and piston release detection air circuit are formed between the CNC equipment, the air circuit control device and the intelligent control fixture device.

[0033] When the working air pressure of the piston clamping detection enters the piston clamping detection air circuit, the intelligent control fixture 710 clamps the product according to the working air pressure, and the clamping force and clamping time are set by the piston clamping detection mode. The air circuit control device 730 is connected to an external air source. After the air source is input, the corresponding working air pressure is generated through the control of the air circuit control device 730 and the duration of the working air pressure is controlled. By analogy, the working principles of other working air pressures are obtained.

[0034] Since the numerical control device 720 is electrically connected (line connected) to the air circuit control device 730, the intelligent control fixture 710 is air-connected to the air circuit control device 730, and the air circuit control device 730 is installed on the outside of the numerical control device 720, corresponding line holes and air circuit holes can be opened on the casing of the numerical control device 720 to facilitate the entry and exit of the lines and air circuits.

[0035] It is important to understand that Figure 1Schematic diagram of the installation position of the intelligent control fixture 710, the numerical control device 720 and the gas circuit control device 730, the structures of the three are simplified, and the actual structures of the numerical control device 720 and the gas circuit control device 730 are not limited; the structure of the intelligent control fixture 710 is as shown in FIG. Figure 2 and Figure 3 As shown, the length, width, shape, size, etc. can also be changed according to needs during specific implementation.

[0036] Please also read Figure 2 and Figure 3 The intelligent control fixture 710 includes a fixture base 1, two zero-point positioning devices 2, two rivets 3 and a support plate 4; the fixture base 1 is fixed on the workbench of the numerical control device, the two zero-point positioning devices 2 are correspondingly installed in the two mounting grooves 6 of the fixture base 1, the two rivets 3 are fixed on the bottom surface of the support plate 4, the positions of the two rivets 3 are opposite to the centering holes 7 of the two zero-point positioning devices 2, and the two rivets 3 are correspondingly inserted into the two centering holes 7 (such as Figure 2 The zero point positioning device 2 is shown on the left side, and the zero point positioning device 2 is sandwiched between the fixture base 1 and the support plate 4. The fixture base 1 is provided with 6 passages composed of a plurality of air pipes, one end of each passage is connected to the zero point positioning device 2, and the other end of each passage is connected to the air path control device 730 through an external air pipe. The product is placed on the surface of the support plate 4.

[0037] Among them, the number of zero-point positioning 2 is the same as the number of rivets 3 and the number of mounting slots 6, and is set to 2 here. The number can be increased or decreased according to demand during specific implementation (such as setting it to 1 to reduce costs and setting it to 3 to ensure stability).

[0038] Please also read Figure 4 , Figure 5 and Figure 6 The number of paths is related to the working mode. As many paths as there are working modes, Figure 5As shown, the passages in the intelligent control fixture 710 are correspondingly set to piston clamping detection passage 100 (red air pipe can be used), central blowing cleaning passage 200 (grey air pipe can be used), opening fixture passage 300 (green air pipe can be used), airtight detection passage 400 (red air pipe can be used), clamping pressurization passage 500 (yellow air pipe can be used) and piston release detection passage 600 (orange air pipe can be used), and different passages are distinguished by air pipes of different colors. Six transmission ports are correspondingly set on one side of the fixture base 1, and the input end of each passage is connected to the corresponding transmission port, and the output end of each passage is connected to the corresponding port of zero point positioning 2. The air path control device is connected to the six transmission ports through the air pipe, so that the working air pressure can be input into the corresponding passage, and the zero point positioning is controlled by the air path control device to realize the functions of opening, clamping, blowing and three kinds of detection. In order to facilitate the connection, the passage label 800 can be silk-screened or affixed on the surface of the fixture base 1 (located above the 6 transmission ports).

[0039] According to the finishing cutting force and product structure, the preferred material of the fixture base 1 is AL6061-T6 (a heat-treated corrosion-resistant alloy) to facilitate fixture manufacturing and reduce costs. Two positioning keys 5 are provided on the back of the fixture base 1. When the fixture base 1 is fixed to the workbench, the positioning keys 5 of the fixture base 1 are inserted into the positioning grid (or positioning groove) on the workbench for positioning.

[0040] The back of the fixture base 1 is also provided with three mounting holes 8 penetrating the fixture base 1, which are aligned with the screw holes on the workbench, and screwing screws into the mounting holes and the screw holes can achieve screw connection and fixation. It should be understood that the numerical control device 720 in this embodiment is a CNC (computer numerical control) device, which can adjust Figure 3 The distance between the mounting holes can be adapted to various different CNC devices. This embodiment takes the CNC device 720 of FANUC α-D21MiB as an example.

[0041] The zero point positioning 2 adopts the zero point positioning system of the SCHUNK series of quick-change fixtures, and the model is preferably NSE PLUS 138, which is a prior art. This embodiment adds a detection function on the basis of using its existing functions. The surface of the zero point positioning 2 has a first screw hole 9, and the surface of the fixture base 1 and the surrounding of the mounting groove 6 have a second screw hole adapted to the first screw hole. After aligning the first screw hole 9 and the second screw hole, screw in the screw, and the zero point positioning 2 can be screwed and fixed on the fixture base 1, and the bottom of the zero point positioning 2 is placed in the mounting groove 6.

[0042] A central through hole 10 is provided at the center of the mounting groove 6, and the central through hole 10 is connected to the central air blowing cleaning passage in the fixture base. The working air pressure enters the fixture base through the corresponding air passage and is output from the central through hole 10 to the zero point positioning 2. In special circumstances (such as power outages) when there is no air pressure input, the two piston rods inside the zero point positioning 2 are in an inward clamping state by default, and the pull nail 3 is self-locked by the pressure of the internal spring (to ensure that the fixture can still be stable and reliable in the event of a sudden loss of working air pressure). When the working air pressure is turned on (0.5MPa), the two piston rods are loosened outward, and the air pressure overcomes the force of the spring to loosen the pull nail, and the pull nail can be freely removed at this time.

[0043] In order to prevent impurities from contaminating the zero point positioning 2, a movable sheet 11 can be set on one side of each first screw hole 9, one end of the movable sheet 11 is fixed to the fixture base 1 through a fulcrum, and the other end of the movable sheet can rotate around the fulcrum to cover the first screw hole 9.

[0044] The gas circuit control device 730 includes an air circuit control base plate 23, on which are installed three pressure detection switches (respectively a first pressure detection switch 12, a second pressure detection switch 13, and a third pressure detection switch 14; the models are preferably the ISE30A series of SMC (a manufacturer of pneumatic and automation components), such as ISE30A-01-P-LB), four two-position two-way solenoid valves (respectively a first two-position two-way solenoid valve 15, a second two-position two-way solenoid valve 16, a third two-position two-way solenoid valve 17, and a fourth two-position two-way solenoid valve 18; the models are preferably VT307-5DZ1-01 of SMC), a three-position five-way solenoid valve 19 (the model is preferably SY5320-5LZD-01 of SMC), and three pressure reducing valves (respectively a first pressure reducing valve 20, a second pressure reducing valve 21, and a third pressure reducing valve 22; the models are preferably: SMC AR20-02G-A) and three flow valves (the first flow valve 24, the second flow valve 25, and the third flow valve 26; the models are preferably SMC's AS1002F-06).

[0045] Among them, Figure 5 As shown, the three-position five-way solenoid valve 19 is connected to the corresponding port of the zero point positioning 2, forming an air path for opening the clamp and a clamping pressurization air path; specifically: the air inlet of the three-position five-way solenoid valve 19 ( Figure 5The first pin of the three-position five-way solenoid valve 19 is connected to the air source (providing working air pressure), the first air outlet (pin 2) of the three-position five-way solenoid valve 19 is connected to the transmission port of the clamping boost passage through the air pipe, the output end of the clamping boost passage is connected to the clamping boost port A of the zero point positioning 2, the second air outlet (pin 4) of the three-position five-way solenoid valve 19 is connected to the transmission port of the opening fixture passage through the air pipe, the output end of the opening fixture passage is connected to the opening fixture port B of the zero point positioning 2, and the control end of the three-position five-way solenoid valve 19 is connected to the controller in the CNC device 720 (specifically the corresponding extended IO address pin).

[0046] When entering the clamp opening mode, the numerical control device 720 outputs an opening signal to control the air inlet of the three-position five-way solenoid valve 19 to be connected to the second air outlet, and the working air pressure (0.6MPa) for opening the clamp is transmitted to the clamp opening port B through the three-position five-way solenoid valve 19, and the zero point positioning 2 is controlled to release the pull nail 3, thereby opening the clamp. When entering the clamping and pressurizing mode, the numerical control device 720 outputs a clamping signal to control the air inlet of the three-position five-way solenoid valve 19 to be connected to the first air outlet, and the working air pressure for clamping and pressurizing is transmitted to the clamping and pressurizing port A through the three-position five-way solenoid valve 19, and the zero point positioning 2 is controlled to clamp the pull nail 3, thereby clamping the clamp.

[0047] The first two-position two-way solenoid valve 15 is connected to the corresponding port of the zero point positioning 2 to form a central air blowing cleaning air path; specifically: the air inlet (pin 1) of the first two-position two-way solenoid valve 15 is connected to the air source (providing working air pressure), the air outlet (pin 2) of the first two-position two-way solenoid valve 15 is connected to the transmission port of the central air blowing cleaning path through the air pipe, the output end of the central air blowing cleaning path is connected to the central through hole 10 of the zero point positioning 2, and the control end of the first two-position two-way solenoid valve 15 is connected to the controller in the numerical control device 720. The air outlet of the first two-position two-way solenoid valve 15 is usually connected to the suspended pin 3, and the air inlet and the air outlet are connected after power is turned on.

[0048] When entering the center air blowing cleaning mode, the CNC device 720 outputs a blowing signal to control the first two-position two-way solenoid valve 15 to be energized, so that its air inlet and air outlet are connected, and the working air pressure used for air blowing cleaning is transmitted to the center through hole 10 through the first two-position two-way solenoid valve 15, controlling the zero point positioning 2 to blow air to clean the rivet 3.

[0049] The second two-position two-way solenoid valve 16, the first flow valve 24, the first pressure reducing valve 20, the first pressure detection switch 12 are connected to the corresponding ports of the zero point positioning 2 to form a piston clamping detection air circuit; specifically: the air inlet (pin 1) of the second two-position two-way solenoid valve 16 is connected to the air source (providing working air pressure), the air outlet (pin 2) of the second two-position two-way solenoid valve 16 is connected to the inlet of the first flow valve 24, the outlet of the first flow valve 24 is connected to the inlet of the first pressure reducing valve 20, the outlet of the first pressure reducing valve 20 is connected to the input end of the first pressure detection switch 12, the output end of the first pressure detection switch 12 is connected to the transmission port of the piston clamping detection passage through the air pipe, and the output end of the piston clamping detection passage is connected to the clamping detection port C of the zero point positioning 2; the communication end of the second two-position two-way solenoid valve 16, the communication end of the first flow valve 24, the communication end of the first pressure reducing valve 20, and the communication end of the first pressure detection switch 12 are all connected to the controller in the numerical control device 720.

[0050] When entering the piston clamping detection mode, the numerical control device 720 outputs a clamping detection signal to control the second two-position two-way solenoid valve 16 to be energized, so that its air inlet is connected to the air outlet, and the working air pressure (0.2MPa) used for clamping is transmitted to the clamping detection port C through the second two-position two-way solenoid valve 16, the first flow valve 24, the first pressure reducing valve 20, and the first pressure detection switch 12 in sequence, and the zero point positioning 2 clamps the rivet 3. The numerical control device 720 controls the first flow valve 24 to adjust the flow rate, controls the first pressure reducing valve 20 to adjust the pressure, and the first pressure detection switch 12 feeds back the detected pressure value to the numerical control device 720, and the numerical control device 720 can determine whether the piston is clamped and the clamping force, thereby realizing the piston clamping detection.

[0051] The third two-position two-way solenoid valve 17, the second flow valve 25, the second pressure reducing valve 21, and the second pressure detection switch 13 are connected to the corresponding ports of the zero point positioning 2 to form a piston release detection air circuit; specifically: the air inlet (pin 1) of the third two-position two-way solenoid valve 17 is connected to the air source (providing working air pressure), the air outlet (pin 2) of the third two-position two-way solenoid valve 17 is connected to the inlet of the second flow valve 25, the outlet of the second flow valve 25 is connected to the inlet of the second pressure reducing valve 21, the outlet of the second pressure reducing valve 21 is connected to the input end of the second pressure detection switch 13, the output end of the second pressure detection switch 13 is connected to the transmission port of the piston release detection path through the air pipe, and the output end of the piston release detection path is connected to the release detection port D of the zero point positioning 2; the communication end of the third two-position two-way solenoid valve 17, the communication end of the second flow valve 25, the communication end of the second pressure reducing valve 21, and the communication end of the second pressure detection switch 13 are all connected to the controller in the numerical control device 720.

[0052] When entering the piston release detection mode, the numerical control device 720 outputs a release detection signal to control the third two-position two-way solenoid valve 17 to be energized, so that its air inlet and air outlet are connected, and the working air pressure for release is transmitted to the release detection port D through the third two-position two-way solenoid valve 17, the second flow valve 25, the second pressure reducing valve 21, and the second pressure detection switch 13 in sequence. When the working air pressure (0.2MPa) is input, the two piston rods inside the zero point positioning 2 are released outward, and at the same time, the air pressure overcomes the force of the spring to release the rivet. The numerical control device 720 adjusts the flow rate by controlling the second flow valve 25 and the pressure by controlling the second pressure reducing valve 21, and pre-debugs various parameters before work. The second pressure detection switch 13 feeds back the detected pressure value to the numerical control device 720, and the numerical control device 720 can determine whether the piston is released, thereby realizing the piston release detection.

[0053] The fourth two-position two-way solenoid valve 18, the third flow valve 26, the third pressure reducing valve 22, and the third pressure detection switch 14 are connected to the corresponding ports of the zero point positioning 2 to form an airtight detection air circuit; specifically: the air inlet (pin 1) of the fourth two-position two-way solenoid valve 18 is connected to the air source (providing working air pressure), the air outlet (pin 2) of the fourth two-position two-way solenoid valve 18 is connected to the inlet of the third flow valve 26, the outlet of the third flow valve 26 is connected to the inlet of the third pressure reducing valve 22, the outlet of the third pressure reducing valve 22 is connected to the input end of the third pressure detection switch 14, the output end of the third pressure detection switch 14 is connected to the transmission port of the airtight detection path through the air pipe, and the output end of the airtight detection path is connected to the four airtight detection ports E of the zero point positioning 2; the communication end of the fourth two-position two-way solenoid valve 18, the communication end of the third flow valve 26, the communication end of the third pressure reducing valve 22, and the communication end of the third pressure detection switch 14 are all connected to the controller in the numerical control device 720.

[0054] When entering the airtight detection mode, the CNC device 720 outputs an airtight detection signal to control the fourth two-position two-way solenoid valve 18 to be energized, so that its air inlet and air outlet are connected, and the working air pressure used for airtight detection is transmitted to the four airtight detection ports E in turn through the fourth two-position two-way solenoid valve 18, the third flow valve 26, the third pressure reducing valve 22, and the third pressure detection switch 14, and the working air pressure (0.2MPa) is input into the zero point positioning 2; when the seal is good, the pressure value on the airtight detection air circuit 400 detected by the third pressure detection switch 14 is greater than the set value (such as 0.4MPa). If there is a leak, the pressure value is lower than the set value, and a low pressure alarm occurs. The third pressure detection switch 14 feeds back the detected pressure value to the CNC device 720, and the CNC device 720 can determine whether there is a leak, thereby realizing airtight detection and stopping work when there is a leak.

[0055] The controller (PLC, which stores the work flow or detection process) in the CNC device 720 is used to control the on and off of the four two-position two-way solenoid valves, thereby opening and closing the corresponding air circuits; the corresponding detection results are fed back to the CNC device through three pressure detection switches, thereby realizing one functional mode (center air blowing cleaning mode), two control modes (opening the clamp mode and clamping boost mode) and three detection modes (piston clamping detection mode, airtight detection mode and piston loosening detection mode); thereby realizing the linkage and detection of the intelligent control clamp device and the CNC device, satisfying the automatic control of the tooling fixture on the automated production line, and ensuring the parts processing accuracy and production efficiency, meeting the actual production requirements.

[0056] Preferably, a filter 27 (preferably model: SMC AW30-03G-A) is added to the input end of the air source, and the filter 27 is used to filter the air impurities in the air source of the input working air pressure to prevent air impurities from affecting the zero point positioning 2.

[0057] In this embodiment, the installation process of the intelligent control fixture 710 is as follows:

[0058] 1. First, insert the positioning key 5 of the fixture base 1 into the positioning grid on the workbench for positioning, screw the screws into the mounting holes 8 for screwing and fixing, and perform plane calibration.

[0059] 2. Install the zero point positioning 2 into the installation slot 6 of the fixture base 1, align the first screw hole 9 on the zero point positioning 2 with the second screw hole on the fixture base 1, and then screw in the screw to screw the zero point positioning 2 onto the fixture base 1. Turn the movable piece 11 to cover the first screw hole 9. After installation, use a meter to confirm the flatness.

[0060] 3. Fix two rivets 3 on the bottom surface of the support plate 4. When the support plate 4 covers the fixture base 1, the two rivets 3 are inserted into the corresponding centering holes 7.

[0061] The installation process of the gas path control device is as follows:

[0062] 1. First, fix the pneumatic components (i.e., 1 filter, 3 pressure detection switches, 4 2-position 2-way solenoid valves, 1 3-position 5-way solenoid valve, 3 pressure reducing valves and 3 flow valves) on the air circuit control base plate 23, and then fix the air circuit control base plate 23 to the side of the CNC equipment.

[0063] 2. According to Figure 6 As shown in the connection relationship, air pipes are used to connect the various pneumatic components and the corresponding pneumatic components to the zero point positioning and ensure the joints are sealed; data cables are used to electrically connect the pneumatic components to the controller of the numerical control device 720.

[0064] 3. Connect the output ends of the six gas circuits of the gas circuit control board to the corresponding ports on the side of the fixture base 1 through gas pipes, and connect them to the six gas circuits inside the fixture base 1 to ensure that the joints are sealed.

[0065] After installation, before use, debugging is required. Adjust each pressure regulating valve to the set data, set the upper and lower limits of each pressure detection switch signal trigger, open and close the zero point positioning piston switch by executing the signal command output by the PLC; determine whether the feedback pressure value is normal, and readjust the parameters if there is any abnormality.

[0066] To sum up, the intelligent control fixture device and control system for an automated production line provided by the present invention can not only position and clamp products, but also be linked and inspected with CNC equipment, thereby meeting production needs, while reducing the operating intensity of workers and ensuring safety and reliability in the automated production process.

[0067] The division of the above functional modules is only for illustration. In practical applications, the above functions can be assigned to different functional modules as needed, that is, divided into different functional modules to complete all or part of the functions described above.

[0068] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. An intelligent control fixture device for an automated production line, characterized in that: It includes a fixture base, a zero-point positioning device, a rivet and a support plate; the fixture base is fixed on the workbench of the numerical control device, the zero-point positioning device is correspondingly installed in the mounting groove of the fixture base, the rivet is fixed on the bottom surface of the support plate, the position of the rivet is opposite to the centering hole of the zero-point positioning device, the rivet is correspondingly inserted into the centering hole, the zero-point positioning device is clamped between the fixture base and the support plate, and a plurality of passages composed of a plurality of air pipes are arranged in the fixture base, one end of each passage is connected to the zero-point positioning device, and the other end of each passage is connected to the air path control device through an external air pipe; The gas circuit control device comprises a gas circuit control base plate, and a three-position five-way solenoid valve is installed on the gas circuit control base plate; The air inlet of the three-position five-way solenoid valve is connected to the air source, the first air outlet of the three-position five-way solenoid valve is connected to the clamping and boosting port of the zero point positioning through the clamping and boosting passage, the second air outlet of the three-position five-way solenoid valve is connected to the opening fixture port of the zero point positioning through the opening fixture passage, and the control end of the three-position five-way solenoid valve is connected to the numerical control device; The numerical control device controls the air inlet of the three-position five-way solenoid valve to be connected to the second air outlet, and the working air pressure for opening the fixture is transmitted to the opening port of the fixture through the three-position five-way solenoid valve, and the zero-point positioning is controlled to release the pull nail; the numerical control device controls the air inlet of the three-position five-way solenoid valve to be connected to the first air outlet, and the working air pressure for clamping and pressurizing is transmitted to the clamping and pressurizing port through the three-position five-way solenoid valve, and the zero-point positioning is controlled to clamp the pull nail; The gas circuit control bottom plate is also equipped with a first pressure detection switch, a second pressure detection switch, a third pressure detection switch, a first two-position two-way solenoid valve, a second two-position two-way solenoid valve, a third two-position two-way solenoid valve, a fourth two-position two-way solenoid valve, a first pressure reducing valve, a second pressure reducing valve, a third pressure reducing valve, a first flow valve, a second flow valve and a third flow valve; The air inlet of the first two-position two-way solenoid valve is connected to the air source, the air outlet of the first two-position two-way solenoid valve is connected to the central through hole of the zero point positioning through the central air blowing cleaning passage, and the control end of the first two-position two-way solenoid valve is connected to the numerical control device; The air inlet of the second two-position two-way solenoid valve is connected to the air source, and the air outlet of the second two-position two-way solenoid valve is connected to the clamping detection port of the zero point positioning through the first flow valve, the first pressure reducing valve, the first pressure detection switch, and the piston clamping detection passage in sequence; the communication end of the second two-position two-way solenoid valve, the communication end of the first flow valve, the communication end of the first pressure reducing valve, and the communication end of the first pressure detection switch are all connected to the numerical control device; The air inlet of the third two-position two-way solenoid valve is connected to the air source, and the air outlet of the third two-position two-way solenoid valve is connected to the release detection port of the zero point positioning through the second flow valve, the second pressure reducing valve, the second pressure detection switch, and the piston release detection passage in sequence; the communication end of the third two-position two-way solenoid valve, the communication end of the second flow valve, the communication end of the second pressure reducing valve, and the communication end of the second pressure detection switch are all connected to the numerical control device; The air inlet of the fourth two-position two-way solenoid valve is connected to the air source, and the air outlet of the fourth two-position two-way solenoid valve is connected to the airtight detection port for zero point positioning through the third flow valve, the third pressure reducing valve, the third pressure detection switch, and the airtight detection passage in sequence; the communication end of the fourth two-position two-way solenoid valve, the communication end of the third flow valve, the communication end of the third pressure reducing valve, and the communication end of the third pressure detection switch are all connected to the CNC device.

2. The intelligent control fixture device for an automated production line according to claim 1, characterized in that: The passages include a piston clamping detection passage, a center air blowing cleaning passage, a clamp opening passage, an airtight detection passage, a clamping pressurization passage, and a piston release detection passage; Six transmission ports are correspondingly arranged on one side of the fixture base, the input end of each passage is connected to the corresponding transmission port, the output end of each passage is connected to the corresponding port of zero point positioning, and the air path control device is connected to the six transmission ports through an air pipe.

3. The intelligent control fixture device for an automated production line according to claim 1, characterized in that: A positioning key is provided on the back of the clamp base, and the positioning key of the clamp base is inserted into the positioning grid on the workbench for positioning.

4. The intelligent control fixture device for an automated production line according to claim 1, characterized in that: The back of the clamp base is also provided with a mounting hole which penetrates the clamp base, the mounting hole is aligned with the screw hole on the workbench, and screws are screwed into the mounting hole and the screw hole for screwing and fixing.

5. The intelligent control fixture device for an automated production line according to claim 1, characterized in that: The surface of the zero point positioning device has a first screw hole, and the surrounding of the mounting groove has a second screw hole adapted to the first screw hole. The bottom of the zero point positioning device is placed in the mounting groove, and the first screw hole and the second screw hole are aligned and screwed in to fix them.

6. The intelligent control fixture device for an automated production line according to claim 5, characterized in that: A movable sheet is arranged on one side of each first screw hole, one end of the movable sheet is fixed on the clamp base through a fulcrum, and the other end of the movable sheet rotates around the fulcrum to cover the first screw hole.

7. The intelligent control fixture device for an automated production line according to claim 2, characterized in that: A central through hole is provided at the center of the installation groove, and the central through hole is communicated with a central air blowing cleaning passage in the fixture base.

8. A control system for an automated production line, characterized in that: It comprises a numerical control device, an air circuit control device and an intelligent control fixture device for an automated production line as claimed in any one of claims 1 to 7, wherein the intelligent control fixture is mounted on a workbench inside a housing of the numerical control device, and the air circuit control device is mounted on the outside of the housing; the air circuit control device connects the intelligent control fixture and the numerical control device; The numerical control equipment controls the air circuit control device to output the corresponding working air pressure according to the preset working mode. The working air pressure is transmitted to the corresponding channel inside the intelligent control fixture. The intelligent control fixture performs the control detection set by the working mode according to the working air pressure in the corresponding channel, and the air circuit control device feeds back the detection result to the numerical control equipment.

9. The control system for an automated production line according to claim 8, characterized in that: The working modes include a central air blowing cleaning mode, a clamp opening mode, a clamping and pressurizing mode, a piston clamping detection mode, an airtight detection mode and a piston loosening detection mode.

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