CN110711947A

CN110711947A - Rivet nut detection device integrating laser marking

Info

Publication number: CN110711947A
Application number: CN201911042342.9A
Authority: CN
Inventors: 徐萌; 程远; 袁玉荣
Original assignee: Nanjing Ying Nigema Industrial Automation Technology Co Ltd
Current assignee: Nanjing Ying Nigema Industrial Automation Technology Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-01-21

Abstract

The invention discloses a rivet nut detection device integrating laser marking. The device includes the frame, is equipped with positioning mechanism and rivet nut detection subassembly on the frame, and rivet nut detection subassembly is connected with the detection control ware respectively, the detection control ware is used for controlling rivet nut detection subassembly work to whether confirm a plurality of rivet nuts on the work piece qualified, the detection control ware is connected with the display screen, and the display screen is used for showing the testing result of work piece, still includes the laser marking subassembly, and the laser marking subassembly marks the mark operation to the work piece when rivet nut detects qualified. The invention solves the problem of low detection precision of the traditional detection sensor, ensures the reliability and stability of the detection result, is driven by the rodless cylinder, can simultaneously detect a plurality of positions by using one detection device, saves the cost, integrates the laser marking unit, can simultaneously complete the detection and marking work after manually operating a button once, and saves the working time.

Description

Rivet nut detection device integrating laser marking

Technical Field

The invention relates to the field of rivet nut detection devices, in particular to a rivet nut detection device integrating laser marking.

Background

At present, in the assembly of electromechanical and light industrial products such as automobiles, aviation, instruments, furniture, decorations and the like, in order to overcome the defects that a sheet metal and a thin pipe welded nut are easy to melt and tapping is easy to slide, and the like, the rivet nuts are increasingly used in the fields, the variety of the rivet nuts is also large, sometimes dozens or even hundreds of rivet nuts exist on one product, in the fields of batch production and automatic production, in order to prevent the situations of artificial rivet missing drawing and wrong drawing, rivet detection equipment is produced, in some special occasions such as narrow space and unable to use standard nuts, some special situations need to be made in a non-calibration mode to meet the assembly requirements of the products, at the moment, only one or two of the non-standard nuts have different sizes, the size deviation is within 2mm, but the traditional detection sensor cannot judge whether the wrong drawing occurs or not reliably, once the product is pulled by mistake, the product can not be assembled during assembly, so that the scrapping of parts and even products can be caused, and the risk of line stop of a production line can be caused, thereby causing waste.

Disclosure of Invention

The invention aims to provide a rivet nut detection device integrating laser marking, aiming at the defects in the prior art.

In order to achieve the purpose, the invention provides a rivet nut detection device integrating laser marking, which comprises a base, wherein a positioning mechanism and a rivet nut detection assembly are arranged on the base, the positioning mechanism is used for fixing a workpiece on the upper side of the base, the rivet nut detection assembly is used for detecting a plurality of rivet nuts on the workpiece, the rivet nut detection assembly is respectively connected with a detection controller, the detection controller is used for controlling the rivet nut detection assembly to work and determining whether the plurality of rivet nuts on the workpiece are qualified or not according to signals fed back by the rivet nut detection assemblies, the detection controller is connected with a display screen, the display screen is used for displaying a detection result of the workpiece, the rivet nut detection device further comprises a laser marking assembly, and the laser marking assembly marks the workpiece when the rivet nuts are qualified.

Further, positioning mechanism is including setting up the sliding table board at the seat platform of frame upside, sliding connection and frame upside, be connected with first driver part between sliding table board and the frame, sliding table board and frame upside are equipped with first locating plate and second locating plate respectively relatively, second locating plate rear side be equipped with the locating hole complex locating pin on the work piece, first driver part drive sliding table board makes first locating plate and second locating plate cooperation press from both sides tightly or loosen the work piece when the frame upside back-and-forth movement.

Further, the rivet nut detection assembly comprises a standard rivet nut detection assembly and a non-standard rivet nut detection assembly; the standard rivet nut detection assembly comprises a proximity sensor, the nonstandard rivet nut detection assembly comprises a camera and a light lamp arranged on one side of the camera, and the proximity sensor, the camera and the light lamp are respectively connected with the detection controller.

Further, standard rivet nut detection subassembly is including setting up a plurality of detection supports at the slip table board upside, be equipped with second driver part on the detection support, proximity sensor passes through the connecting plate and installs on second driver part, still be equipped with the sliding sleeve on the connecting plate, sliding connection has the gauge rod in the sliding sleeve, the front end of gauge rod corresponds with standard rivet nut position on the work piece, and is equipped with the spring between its front end and the sliding sleeve, the rear end of gauge rod is equipped with the plush copper, proximity sensor vertically sets up in the gauge rod interval, and its and plush copper just form the through-connection fit when right.

Further, the base comprises a frame and a seat plate arranged at the upper end of the frame, the nonstandard rivet nut detection assembly comprises a fixed nonstandard rivet nut detection assembly and a movable nonstandard rivet nut detection assembly, the fixed nonstandard rivet nut detection assembly comprises a first camera and a first lighting lamp which are fixed on the lower side of the seat plate, and the seat plate positioned on the upper sides of the first camera and the first lighting lamp is provided with an opening so that the first camera can penetrate through the opening to detect the nonstandard rivet nuts on the front lower side of the workpiece; the movable non-standard rivet nut detection assembly comprises a camera support, a second camera and a second lighting lamp, wherein the camera support is connected to the upper side of the sliding table plate in a sliding mode, the second camera and the second lighting lamp are arranged on the camera support, and the position of the camera support on the upper side of the sliding table plate is adjusted by a third driving part so as to detect all non-standard rivet nuts on the rear side of a workpiece.

Further, the third driving part is a rodless cylinder.

Further, the laser marking subassembly includes sliding connection at the slip platform frame of frame upside, installs at the laser of slip platform frame upside and marks the computer that mark head is connected, laser generator with laser and be connected with laser generator at the laser of slip platform frame upside, and the computer is connected with the display, be connected with the fourth drive part between slip platform frame and the frame, the computer is connected with the detection control ware to receive the start marking signal that the detection control ware provided, mark the completion back of beating, the computer is to the detection control ware feedback marking completion signal.

Furthermore, display screen and display all set up the back upside at the frame.

Further, the upside still is equipped with both hands operating button box before the frame, both hands operating button with be connected with the detection control ware, the detection control ware includes programmable controller.

Has the advantages that: 1. the integral structure platform is designed to be firm, impact-resistant and durable by adopting a steel structure.

2. The detection sensor is a common inductive sensor, is low in price, indirectly detects the rivet pulling state of a part of standard rivet nuts by means of the driving of the air cylinder and the linear guide rail, and the air cylinder and the linear guide rail can be in a return state when a workpiece is assembled and taken, so that the assembling and the taking of the workpiece are not influenced.

3. Judging the external dimension of the nut by taking a picture by a vision camera to judge whether the condition of wrong pulling occurs or not, wherein the precision can reach within 0.1mm, and one unit is driven by a rodless cylinder; the rivet pulling state of the rivet pulling nuts at a plurality of positions can be detected simultaneously, after detection is finished, the detection result can be recorded in a control system, and after detection is finished, the detection result can be displayed on a display screen. The other detection unit is fixed and is provided with a protection device to prevent the visual camera from being damaged.

4. The laser marking machine is fixed on a sliding table formed by linear slide rail sliding blocks, and can complete detection and marking work simultaneously after a button is manually operated once, so that the working time is saved. When the workpiece is loaded and unloaded, the air cylinder and the linear guide rail are in a return state, and the loading and unloading are not influenced. The laser marking unit is provided with a computer host and a display screen, marking contents can be edited through self-provided software, and the laser marking unit is convenient and quick.

5. The programmable controller is adopted, safety and reliability are realized, detection automation is realized, labor force is liberated, and the benchmark degree is higher.

Drawings

FIG. 1 is a schematic structural diagram of a rivet nut detection device integrated with laser marking;

FIG. 2 is a schematic perspective view of a rivet nut detection device integrated with laser marking;

FIG. 3 is an enlarged partial schematic view of area A of FIG. 2;

FIG. 4 is a schematic bottom view of an integrated laser marked blind rivet nut detection apparatus;

FIG. 5 is an enlarged partial schematic view of region B of FIG. 4;

FIG. 6 is a schematic structural view of a mobile non-standard blind rivet nut detection assembly.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 6, an embodiment of the present invention provides an integrated laser marking rivet nut detection apparatus, which includes a base 1, where a positioning mechanism 2 and a plurality of rivet nut detection assemblies 3 are disposed on the base 1, the positioning mechanism 2 is configured to fix a workpiece 20 on an upper side of the base 1, and the rivet nut detection assemblies 3 are configured to detect a plurality of rivet nuts on the workpiece 20, where the workpiece 20 is an automobile bumper, but is not limited to detecting the rivet nuts on the automobile bumper. The rivet nut detection assemblies 3 are respectively connected with the detection controller 30, the detection controller 30 preferably adopts a programmable controller, the detection controller 30 is used for controlling the rivet nut detection assemblies 3 to work, whether the rivet nuts on the workpiece 20 are qualified or not is determined according to signals fed back by the rivet nut detection assemblies 3, the detection controller 2 is connected with the display screen 4, and the display screen 4 is used for displaying the detection results of the workpiece 20, and the confirmation is facilitated if the rivet nuts are qualified or unqualified. The riveting device further comprises a laser marking assembly, and the laser marking assembly marks the workpiece 20 when the rivet nut is detected to be qualified.

The positioning mechanism 2 of the embodiment of the present invention includes a seat 21, a slide table 22, a first driving member 23, and a plurality of positioning plates. Wherein, seat platform 21 is two, and two seat platforms 21 are all fixed in the upside of frame 1, and the both ends downside of work piece 20 is located the upside of two seat platforms 21 respectively. The slide plate 22 is slidably coupled to an upper side of the machine base 1 by a slide mechanism 25 so that the slide plate 22 can move back and forth on the machine base 1, and the slide plate 22 is coupled to a first driving member 23, and the first driving member 23 is preferably coupled between a rear portion of the slide plate 22 and the machine base 1. The positioning plates comprise a first positioning plate 26 and a second positioning plate 27 which are respectively arranged on the upper sides of the sliding table plate 22 and the machine base 1, and the first positioning plate 26 and the second positioning plate 27 are respectively and oppositely fixed on the upper sides of the sliding table plate 22 and the machine base 1. Furthermore, the distance between the first positioning plate 26 and the second positioning plate 27 can be adjusted along with the movement of the sliding table plate 22 on the upper side of the machine base 1, so as to clamp and release the workpiece 20, and when the first positioning plate 26 and the second positioning plate 27 are matched to clamp the workpiece 20, the second positioning plate 27 is fixed on the upper side of the machine base 1, so as to position the workpiece 20 in the front-back direction. A positioning pin 28 is arranged inside the second positioning plate 27, and the positioning pin 28 is inserted into a positioning hole on the workpiece 20, so as to laterally position the workpiece 20. In order to prevent the workpiece 20 from being damaged when the first positioning plate 26 and the second positioning plate 27 clamp the workpiece 20, a plurality of cushion blocks 29 are further arranged on the opposite side of the first positioning plate 26 and the second positioning plate 27, and the cushion blocks 29 are preferably made of 304 steel.

The blind rivet nut detection assembly 3 comprises a standard blind rivet nut detection assembly 31 and a non-standard blind rivet nut detection assembly 32. Wherein, standard rivet nut detection subassembly 31 includes proximity sensor 311, adopt proximity sensor 311 to detect standard rivet nut 201 on the work piece 20, non-standard rivet nut detection subassembly 32 includes the camera and sets up the light of beating in camera one side, the camera is through shooing the overall dimension who acquires non-standard rivet nut, proximity sensor 311, camera and light are connected with detection controller 20 respectively, and then give detection controller 20 with its signal transmission, judge by detection controller 20 whether there is the condition of wrong drawing to take place.

The standard rivet nut detection assembly 31 of the embodiment of the invention comprises a plurality of detection brackets 312 arranged on the upper side of a sliding table plate 22, a second driving part 313 is arranged on the detection brackets 312, a proximity sensor 311 is arranged on the second driving part 313 through a connecting plate 314, the second driving part 313 controls the proximity sensor 311 to be far away from or close to a workpiece, in order to avoid that the proximity sensor 311 directly detects the standard rivet nut 201 and is easy to collide, so that the proximity sensor 311 is damaged, a sliding sleeve 315 is also arranged on the connecting plate 314, a detection rod 316 is connected in the sliding sleeve 315 in a sliding way, the front end of the detection rod 316 corresponds to the position of the standard rivet nut 201 on the workpiece 20, a spring 317 is arranged between the front end of the detection rod 316 and the sliding sleeve 315, the rear end of the detection rod 316 is provided with a raised head 318, the proximity sensor 311 is arranged vertically to the detection rod 316, and the proximity sensor 311 keeps a certain interval, the spacing is less than the sensing distance of the proximity sensor 311. Under normal conditions, under the action of the spring 317, the nib 318 is adjacent to one side of the web 314, the proximity sensor 311 does not detect the nib 318, when the second driving member 313 drives the connecting plate 314 to approach the workpiece 2, and when the standard blind rivet nut 201 is disposed on the workpiece 2 at a position opposite to the detection rod 316, the detection rod 316 abuts against the standard blind rivet nut 201, and the detection rod 316 is continuously compressed to move forwards in the sliding sleeve 315 against the elastic force of the spring 317 until the raised head 318 is positioned at the opposite position of the proximity sensor 311, so as to form a conductive fit, after the proximity sensor 311 senses the raised head 318, a qualified signal of the standard blind rivet nut 201 is provided to the detection controller 30, when a missing blind rivet nut occurs there, the sensing rod 316 is not compressed and moves forward, the proximity sensor 311 senses that the nose 318 is not in its relative position, and will not provide a signal to the inspection controller 30 that the standard blind rivet nut 201 is acceptable.

The base 1 of the embodiment of the invention comprises a frame 101 and a seat plate 102 arranged at the upper end of the frame 101, wherein the non-standard blind rivet nut detection assembly 32 comprises two groups, namely a fixed non-standard blind rivet nut detection assembly and a movable non-standard blind rivet nut detection assembly, the fixed non-standard blind rivet nut detection assembly is fixed at the lower side of the seat plate 102, the fixed non-standard blind rivet nut detection assembly comprises a first camera 321 and a first lighting lamp 322, the seat plate 102 positioned at the upper sides of the first camera 321 and the first lighting lamp 322 is provided with an opening 103 so that the first camera 321 passes through the opening 103 to detect the non-standard blind rivet nuts 202 at the front lower side of the workpiece 20, the movable non-standard blind rivet nut detection assembly comprises a camera bracket 323 connected at the upper side of the slide plate 22 in a sliding manner, a second camera 324 and a second lighting lamp 325 arranged on the camera bracket 323, the camera bracket 323 is adjusted in position at the upper side of the slide plate 22 by a third driving component 326, when the second lighting lamp 324 and the second lighting lamp 325 move on the slide plate 22 along with the camera bracket 323, the camera bracket 324 and the camera bracket 325, the camera bracket 324 and the camera bracket 324 is provided with the camera to detect the non-standard rivet nuts 20, the second lighting lamp 324, the second lighting lamp 322 is provided to detect the non-standard rivet nuts 325, the second camera bracket 320, the second camera bracket 322, the second lighting lamp 324, the second lighting lamp 322, the second lighting lamp 324, the camera bracket 322, the second.

The laser marking assembly comprises a sliding table frame 5, a laser marking head 6, a laser generator 7 and a computer 8, wherein the sliding table frame 5 is connected to the upper side of a seat plate 102 of a machine base 1 in a sliding mode, the laser marking head 6 is installed on the upper side of the sliding table frame 5, the laser generator 7 is connected with the laser marking head 6, the computer 8 is connected with the display 9, marking contents can be edited and marking programs can be modified through the computer 8 and the display 9, and general marking contents comprise production dates, batch numbers, part numbers and the like. The fourth driving member 10 is connected to the slide stage 5, the fourth driving member 10 drives the slide stage 5 to move by the fourth driving member 10, and when it is detected that all the blind rivet nuts on the workpiece 20 are qualified, the detection controller 30 controls the fourth driving member 10 to operate, so that the laser marking head 6 moves to the operation area on the upper side of the workpiece 20. The computer 8 is connected with the detection controller 30, and after the laser marking head 6 is in place, a marking starting signal provided by the detection controller 30 is sent to the computer 8, so that the computer 8 controls the laser generator 7 and the laser marking head connection 6 to work. After the laser marking is completed, the computer 8 sends a marking completion signal to the detection controller 30, and the detection controller 30 controls the fourth driving part 10 to move the laser marking head 6 out of the upper side of the workpiece 20.

The first driving part 23, the second driving part 313, the third driving part 326 and the fourth driving part 10 according to the embodiment of the present invention may employ various linear driving mechanisms, such as a linear motor and a screw driving mechanism, and preferably employ an air cylinder. The first driving part 23, the second driving part 313, the third driving part 326 and the fourth driving part 10 are controlled to operate by the detection controller 30, respectively. Since the camera holder 323 has a large lateral displacement, in order to prevent the third driving part 326 from occupying a large lateral space, the third driving part 326 preferably uses a rodless cylinder, so that the camera holder 323 is directly slidably connected to the outside of the third driving part 326. The fourth driving member 10 is preferably disposed at a lower side of the seat plate 102, and a lower end of the carriage 5 is connected to the fourth driving member 10 through a bar-shaped opening 104 formed at the seat plate 102. Display screen 4 and display 9 all preferably set up the back upside at frame 1, are convenient for look over and do not influence the operation. The upper front side of the machine base 1 is also provided with a double-hand operation button box 11, the double-hand operation button box 11 is connected with the detection controller 30, and the detection starting and stopping instructions can be input through the double-hand operation button box 11.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to those of ordinary skill in the art. Without departing from the principle of the invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the scope of the invention.

Claims

1. The utility model provides an integrated laser marking's rivet nut detection device, a serial communication port, the test platform comprises a support, be equipped with positioning mechanism and rivet nut detection subassembly on the frame, positioning mechanism is used for fixing the frame upside with the work piece, rivet nut detection subassembly is used for detecting a plurality of rivet nuts on the work piece, rivet nut detection subassembly is connected with the detection control ware respectively, the detection control ware is used for controlling rivet nut detection subassembly work to whether a plurality of rivet nuts on the signal determination work piece that feeds back according to each rivet nut detection subassembly are qualified, the detection control ware is connected with the display screen, the display screen is used for showing the testing result of work piece, still includes the laser marking subassembly, the laser marking subassembly marks the mark operation to the work piece when rivet nut detects qualified.

2. The device for detecting the rivet nut integrated with the laser marking according to claim 1, wherein the positioning mechanism comprises a base, a sliding table plate, a first driving part and a second positioning plate, the base is arranged on the upper side of the base, the sliding table plate is connected with the base in a sliding mode, the first positioning plate and the second positioning plate are arranged on the upper side of the base respectively and oppositely, a positioning pin matched with the positioning hole in the workpiece is arranged on the rear side of the second positioning plate, and the first driving part drives the sliding table plate to enable the first positioning plate and the second positioning plate to be matched with the workpiece to clamp or loosen the workpiece when the sliding table plate moves back and forth on the upper side of the base.

3. The integrated laser marking rivet nut detection device of claim 1, wherein the rivet nut detection assembly includes a standard rivet nut detection assembly and a non-standard rivet nut detection assembly; the standard rivet nut detection assembly comprises a proximity sensor, the nonstandard rivet nut detection assembly comprises a camera and a light lamp arranged on one side of the camera, and the proximity sensor, the camera and the light lamp are respectively connected with the detection controller.

4. The integrated laser marking rivet nut detection device as claimed in claim 3, characterized in that, the standard rivet nut detection assembly comprises a plurality of detection supports arranged on the upper side of the sliding table plate, a second driving part is arranged on the detection supports, the proximity sensor is installed on the second driving part through a connecting plate, a sliding sleeve is further arranged on the connecting plate, a detection rod is connected in the sliding sleeve in a sliding mode, the front end of the detection rod corresponds to the standard rivet nut on the workpiece in position, a spring is arranged between the front end of the detection rod and the sliding sleeve, a raised head is arranged at the rear end of the detection rod, the proximity sensor is arranged at intervals vertical to the detection rod, and the proximity sensor and the raised head are in conduction fit when being right.

5. The detection device for the rivet nut with integrated laser marking according to claim 3, characterized in that the base comprises a frame and a seat plate arranged at the upper end of the frame, the detection assembly for the non-standard rivet nut comprises a fixed detection assembly for the non-standard rivet nut and a movable detection assembly for the non-standard rivet nut, the fixed detection assembly for the non-standard rivet nut comprises a first camera and a first lighting lamp which are fixed at the lower side of the seat plate, and the seat plate at the upper side of the first camera and the first lighting lamp is provided with an opening so that the first camera can pass through the opening to detect the non-standard rivet nut at the front lower side of the workpiece; the movable non-standard rivet nut detection assembly comprises a camera support, a second camera and a second lighting lamp, wherein the camera support is connected to the upper side of the sliding table plate in a sliding mode, the second camera and the second lighting lamp are arranged on the camera support, and the position of the camera support on the upper side of the sliding table plate is adjusted by a third driving part so as to detect all non-standard rivet nuts on the rear side of a workpiece.

6. The integrated laser marked blind rivet nut detecting device according to claim 5, wherein the third driving member is a rodless cylinder.

7. The detection device for the rivet nut integrating laser marking according to claim 1, wherein the laser marking assembly comprises a sliding table frame slidably connected to the upper side of the machine base, a laser marking head installed on the upper side of the sliding table frame, a laser generator connected with the laser marking head, and a computer connected with the laser generator, the computer is connected with a display, a fourth driving part is connected between the sliding table frame and the machine base, the computer is connected with the detection controller to receive a marking starting signal provided by the detection controller, and after marking is completed, the computer feeds back a marking completion signal to the detection controller.

8. The integrated laser marking rivet nut detection device as recited in claim 7, wherein the display screen and the display are both disposed on a rear upper side of the base.

9. The integrated laser marking rivet nut detection device as claimed in claim 1, wherein a two-hand operation button box is further arranged on the front upper side of the machine base, the two-hand operation buttons are connected with a detection controller, and the detection controller comprises a programmable controller.