CN113314915B - Automatic detection device and method for welding strength of copper-aluminum transition flat plate and parallel groove clamp - Google Patents
Automatic detection device and method for welding strength of copper-aluminum transition flat plate and parallel groove clamp Download PDFInfo
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- CN113314915B CN113314915B CN202110579082.XA CN202110579082A CN113314915B CN 113314915 B CN113314915 B CN 113314915B CN 202110579082 A CN202110579082 A CN 202110579082A CN 113314915 B CN113314915 B CN 113314915B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Abstract
The invention discloses an automatic detection device and method for welding strength of copper-aluminum transition flat plates and parallel groove clamps, and the automatic detection device comprises a feeding mechanism, a detection workbench, a discharging mechanism and a controller, wherein the feeding mechanism comprises a first rack and a first belt transmission assembly, and the discharging mechanism comprises a second rack and a second belt transmission assembly; the detection workbench comprises a bearing seat, the middle part of the bearing seat is provided with a guide groove along the length direction, the bearing seat is provided with a portal frame, and the top of the portal frame is provided with a pressing mechanism; the first rack is provided with a pushing assembly used for moving the workpiece on the first belt transmission assembly to the bearing seat, the second rack is provided with a position detection device used for detecting the degree of surface bending of the pressed workpiece on the bearing seat, and the feeding mechanism, the discharging mechanism, the pressing mechanism, the pushing assembly and the position detection device are all electrically connected with the controller. The invention can automatically detect the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp, and has the advantages of high efficiency and high precision.
Description
Technical Field
The invention belongs to the technical field of welding of copper-aluminum transition flat plates and parallel groove clamps, and particularly relates to an automatic detection device and method for welding strength of the copper-aluminum transition flat plates and the parallel groove clamps.
Background
The copper-aluminum transition flat plate and the parallel groove clamp are mainly used for transition between high-voltage grade 10kV and above electrical equipment wiring boards, and in the using process, due to improper installation method, poor welding quality and wire swinging, the welding surface can be broken, and power transmission faults are caused.
How to detect the welding quality of a product becomes a technical problem in the industry, the detection method adopted in the current production is a method that a detector confirms according to the welding appearance or manually breaks by means of a clamp, the efficiency is low, and the deviation of the detection result is extremely large due to the influence of personnel factors.
Therefore, there is a need in the market for an automatic detection device and method for the welding strength of copper-aluminum transition flat plate and parallel groove clamp to solve the above problems.
Disclosure of Invention
The invention aims to provide an automatic detection device and method for welding strength of a copper-aluminum transition flat plate and a parallel groove clamp.
In order to achieve the purpose, the invention provides the following technical scheme: the automatic detection device for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp comprises a feeding mechanism, a detection workbench, a discharging mechanism and a controller, wherein the feeding mechanism comprises a first rack and a first belt transmission assembly arranged on the first rack, the discharging mechanism comprises a second rack and a second belt transmission assembly arranged on the second rack, and a qualified product collecting box and a defective product collecting box are respectively arranged below the front end and the rear end of the second rack; the detection workbench comprises a bearing seat arranged between a first rack and a second rack, the middle part of the bearing seat is provided with a guide groove along the length direction, the bearing seat is also provided with a portal frame, and the top of the portal frame is provided with a pressing mechanism at a position right above the guide groove; the automatic workpiece pushing device is characterized in that a pushing assembly used for moving a workpiece on a first belt transmission assembly to a bearing seat is installed on one side, away from a detection workbench, of the first rack, a position detection device used for detecting the degree of surface bending of the workpiece after being pressed on the bearing seat is installed on one side, away from the detection workbench, of the second rack, and the feeding mechanism, the discharging mechanism, the pressing mechanism, the pushing assembly and the position detection device are all electrically connected with the controller.
By adopting the technical scheme, when the workpiece pushing device is used, a workpiece is placed on the first belt transmission assembly of the feeding mechanism for transmission, and the workpiece is pushed to the bearing seat in the detection workbench through the pushing assembly; the pressing mechanism acts on the welding position of the workpiece according to preset pressure and keeps loading for 10-30 s; the position detection device records two actual deformation quantities before and after the workpiece bears pressure and feeds the recording result back to the controller; the pressing mechanism resets, and a pushing assembly on the feeding mechanism pushes the workpiece out to a second belt transmission assembly of the discharging mechanism; the controller calculates according to a built-in mathematical model formula through the recorded actual deformation, and if the workpiece is a qualified product after calculation, the controller controls the second belt transmission assembly to operate in the forward direction, and the second belt transmission assembly conveys the workpiece to a qualified product collection box; and after calculation, if the workpiece is an unqualified product, the controller controls the second belt transmission assembly to reversely rotate, and the second belt transmission assembly conveys the workpiece to the defective product collection box. Therefore, the equipment can automatically detect the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp, and has the advantages of high efficiency and high precision.
The invention is further provided with two mounting cavities symmetrically arranged on the upper end surface of the bearing seat, a plurality of driving rollers are uniformly mounted in the mounting cavities along the length direction through rotating shafts, and the tops of the driving rollers are higher than the top surface of the bearing seat.
Through adopting above-mentioned technical scheme, can make the work piece avoid its surface by the fish tail when shifting on the load seat, can play the effect of protection work piece, can play the effect of supplementary work piece displacement again, make its motion on the load seat easier.
The invention is further arranged in such a way that a first driving motor and a second driving motor are respectively arranged at one side of the installation cavity close to the first rack and one side of the installation cavity close to the second rack, a motor shaft of the first driving motor is connected with a first friction roller, a plurality of first friction convex parts are uniformly distributed at the peripheral side of the first friction roller, a motor shaft of the second driving motor is connected with a second friction roller, a plurality of second friction convex parts are uniformly distributed at the peripheral side of the second friction roller, and the tops of the first friction roller and the second friction roller are higher than the top surface of the bearing seat.
Through adopting above-mentioned technical scheme, not only can order about the work piece displacement to pushing down the detection position under the mechanism, can order about the work piece displacement to the second in addition after detecting the completion and take the transmission assembly on, also reduced the requirement to the stroke of top push mechanism simultaneously, greatly reduced manufacturing cost and assembly degree of difficulty.
The invention is further arranged in that a supporting frame is arranged between the first rack and the second rack, the force bearing seat is arranged on the supporting frame, a material guide rail for connecting the first rack and the force bearing seat is arranged on one side of the first rack close to the detection workbench, and the tail end of the material guide rail is flush with the upper end face of the force bearing seat; the height that highly is less than the load seat top surface of second frame top surface, the exit end of load seat is installed and is used for connecting the mounting bracket of load seat and second frame, rotate by high to low on the mounting bracket and be provided with first guide roll and a plurality of second guide roll, the slope of formation between first guide roll and the adjacent second guide roll is greater than the slope of formation between a plurality of second guide rolls.
Through adopting above-mentioned technical scheme, the support frame can promote the steadiness of testing workbench installation, and work piece accessible guide track is carried to the load seat on by first area transmission unit, and work piece accessible first guide roll and second guide roll are carried to the second by the load seat on the transmission unit, and the slope design between first guide roll and the adjacent second guide roll provides a bigger initial acceleration of work piece, makes it smooth along the second guide roll slide to the second area transmission unit on.
The invention is further provided with two groups of pressure detection components symmetrically arranged on two sides of the portal frame, each pressure detection component comprises a third driving motor, a screw rod, a sliding block and two pressure sensors, a guide seat is arranged on the side part of the portal frame, a guide groove which is communicated with the inside and the outside and is matched with the sliding block is formed in the guide seat, a dovetail sliding groove is formed in the side part of the sliding block along the length direction, and a guide convex part matched with the dovetail sliding groove is formed in the inner wall of the guide groove; the outer end of guide holder is equipped with the motor mounting panel, third driving motor installs on the motor mounting panel, and third driving motor's motor shaft is connected with the lead screw, be equipped with the screw with lead screw matched with on the slider, two pressure sensor install on the interior terminal surface of slider.
Through adopting above-mentioned technical scheme, pressure measurement subassembly is used for detecting the work piece that thickness is bigger and the deflection is littleer, combines position detection device can detect the welding strength of work piece more accurately.
The invention is further arranged in that the pressing mechanism comprises a hydraulic cylinder arranged on the portal frame, a pressing base is arranged on the extending end of the hydraulic cylinder, the bottom of the pressing base is in a conical shape with a large top and a small bottom, a connecting groove is formed in the end of the pressing base, a pressing head is inserted into the connecting groove, the pressing head is made of elastic materials, and a chamfer is arranged on the edge of the outer end of the pressing head.
Through adopting above-mentioned technical scheme, can exert stable holding down force to the welding position of work piece, the production of work piece surface indentation can be avoided in the design of pressure head elastic material, and the pressure head also makes its later maintenance more convenient with the direct grafting complex relation of holding down the base.
The invention is further provided with a guide assembly, a monitoring assembly and a correcting assembly which are arranged on a first rack along the transmission direction of a first belt transmission assembly, wherein the guide assembly comprises fixed seats symmetrically arranged on two sides of the first rack, each fixed seat comprises two L-shaped clamping blocks, a compensation gap is arranged between the two L-shaped clamping blocks, a semicircular clamping groove is formed in one side of each L-shaped clamping block corresponding to the compensation gap, each semicircular clamping groove forms an inserting hole, a supporting rod is inserted in each inserting hole, the two L-shaped clamping blocks are connected through a connecting bolt, the supporting rods are clamped by the two L-shaped clamping blocks when the connecting bolts are screwed, guide plates are connected to the inner ends of the supporting rods, a guide channel is formed between the two guide plates, and the width of the guide channel is firstly reduced and then is unchanged along the transmission direction of a workpiece; the monitoring assembly comprises a first bracket, and a CCD (charge coupled device) vision camera for detecting whether the workpiece is righted is arranged on the first bracket; the straightening assembly comprises a second support, a first electric sliding table is arranged on the second support, a first mounting plate is arranged on the extending end of the first electric sliding table, a fourth driving motor is mounted on the first mounting plate, a motor shaft of the fourth driving motor is connected with a second mounting plate, and a pneumatic sucker for sucking a workpiece is connected onto the second mounting plate.
By adopting the technical scheme, the direction of the welding line of the product can be ensured to be vertical to the moving direction of the first belt transmission assembly, so that the welding line position can be accurately acted by the pressing mechanism when the first belt transmission assembly is ejected out to the bearing seat.
The pushing assembly comprises a second electric sliding table arranged on the first frame, a third mounting plate is arranged on the extending end of the second electric sliding table, a cushion pad is arranged on the third mounting plate, a circular groove is formed in the cushion pad, and an infrared sensor is arranged on the third mounting plate and positioned in the circular groove.
Through adopting above-mentioned technical scheme, not only can accurately push away the work piece to the load seat on, the blotter plays the cushioning effect moreover, can avoid the work piece surface to receive the rigidity striking and produce the damage.
The invention also provides an automatic detection method for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp, which comprises the following steps:
(1) placing the workpiece on a first belt transmission assembly of a feeding mechanism for transmission, and pushing the workpiece to a bearing seat in a detection workbench through a pushing assembly;
(2) the input ends of the pressure sensors on the two groups of pressure detection assemblies are respectively abutted to two sides of the workpiece, and after each pressure sensor is tightly attached to the workpiece, the numerical value displayed by the pressure sensor is reset;
(3) the pressing mechanism acts on the welding position of the workpiece according to preset pressure and keeps loading for 10-30 s;
(4) the position detection device records two actual deformation quantities before and after the workpiece bears pressure and feeds the recording results back to the controller, and meanwhile, the four pressure probes feed the pressure data measured by the four pressure probes back to the controller;
(5) the pushing assembly on the feeding mechanism pushes the workpiece out to the second belt transmission assembly of the discharging mechanism;
(6) the controller calculates according to a built-in mathematical model formula through the recorded pressure data and the actual deformation, and if the workpiece is a qualified product after calculation, the controller controls the second belt transmission assembly to operate in the forward direction, and the second belt transmission assembly conveys the workpiece to a qualified product collection box; and after calculation, if the workpiece is an unqualified product, the controller controls the second belt transmission assembly to reversely rotate, and the second belt transmission assembly conveys the workpiece to the defective product collection box.
By adopting the technical scheme, the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp can be automatically detected, and the automatic detection device has the advantages of high efficiency and high precision.
The invention is further configured that the mathematical model formula in the step (6) is as follows:
P=0.0001SHL；
in the formula:
p-set pressure in bar;
s is the area of the contact surface of the pressure head, and the unit is mm;
h-weld thickness, unit mm;
l is the length of the weld joint in mm;
and comparing the set pressure calculated according to the formula with the actual pressure obtained by calculating the recorded pressure data and the actual deformation, wherein if the actual pressure is greater than the set pressure, the product is unqualified, and if the actual pressure is not greater than the set pressure, the product is qualified.
By adopting the technical scheme, the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp can be accurately detected.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a schematic view of a first viewing direction structure of the inspection station according to the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of a second viewing direction of the inspection station according to the present invention;
FIG. 5 is a schematic view of the construction of the guide assembly of the present invention;
FIG. 6 is a schematic structural view of a monitoring assembly according to the present invention;
FIG. 7 is a schematic structural view of a centering assembly of the present invention;
FIG. 8 is a schematic view of the pushing assembly of the present invention.
In the figure: 1. a feeding mechanism; 2. a detection workbench; 3. a discharging mechanism; 4. a controller; 5. a first frame; 6. a first belt transport assembly; 7. a second frame; 8. a second belt transport assembly; 9. a qualified product collecting box; 10. a defective product collection box; 11. a force bearing seat; 12. a guide groove; 13. a gantry; 14. a pressing mechanism; 15. a pushing assembly; 16. a position detection device; 17. a mounting cavity; 18. a driving roller; 19. a first drive motor; 20. a second drive motor; 21. a first rubbing roller; 22. a first friction projection; 23. a second rubbing roller; 24. a second friction projection; 25. a support frame; 26. a material guiding rail; 27. a mounting frame; 28. a first guide roller; 29. a second guide roller; 30. a pressure detection assembly; 31. a third drive motor; 32. a lead screw; 33. a slider; 34. a pressure sensor; 35. a guide seat; 36. a guide groove; 37. a dovetail chute; 38. a guide projection; 39. a motor mounting plate; 40. a screw hole; 41. a hydraulic cylinder; 42. pressing down the base; 43. connecting grooves; 44. a pressure head; 45. chamfering; 46. a guide assembly; 47. a monitoring component; 48. a straightening assembly; 49. a fixed seat; 50. an L-shaped clamping block; 51. compensating for the seam; 52. a semicircular clamping groove; 53. inserting holes; 54. a support bar; 55. a connecting bolt; 56. a guide plate; 57. a guide channel; 58. a first bracket; 59. a CCD vision camera; 60. a second bracket; 61. a first electric sliding table; 62. a first mounting plate; 63. a fourth drive motor; 64. a second mounting plate; 65. a pneumatic suction cup; 66. a second electric sliding table; 67. a third mounting plate; 68. a cushion pad; 69. a circular groove; 70. an infrared sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): the invention provides an automatic detection device for welding strength of a copper-aluminum transition flat plate and parallel groove clamp, which comprises a feeding mechanism 1, a detection workbench 2, a discharging mechanism 3 and a controller 4 as shown in attached figures 1-8, wherein the feeding mechanism 1 comprises a first rack 5 and a first belt transmission assembly 6 arranged on the first rack 5, the discharging mechanism 3 comprises a second rack 7 and a second belt transmission assembly 8 arranged on the second rack 7, a qualified product collecting box 9 and a defective product collecting box 10 are respectively arranged below the front end and the rear end of the second rack 7, the first belt transmission assembly 6 and the second belt transmission assembly 8 are respectively composed of a driving motor, a driving roller, a driven roller and a belt, the driving motor is used for driving the driving roller to rotate, and further transmission of the belt is realized; the detection workbench 2 comprises a bearing seat 11 arranged between a first rack 5 and a second rack 7, the middle part of the bearing seat 11 is provided with a guide groove 12 along the length direction, the width of the guide groove 12 is more than or equal to 10 times of the width of a welding seam of a workpiece, the width of the guide groove 12 is less than or equal to one half of the width of the workpiece, the bearing seat 11 is also provided with a portal frame 13, the top of the portal frame 13 is provided with a pressing mechanism 14 right above the guide groove 12, when the workpiece is conveyed to the bearing seat 11, the pressing mechanism 14 descends and acts on the welding position of the workpiece, and the welding position of the workpiece is positioned above the guide groove 12; the automatic feeding device is characterized in that a pushing assembly 15 used for moving a workpiece on a first belt transmission assembly 6 to a bearing seat 11 is installed on one side, far away from a detection workbench 2, of the first rack 5, a position detection device 16 used for detecting the degree of surface bending of the workpiece after being pressed on the bearing seat 11 is installed on one side, far away from the detection workbench 2, of the second rack 7, and the feeding mechanism 1, the discharging mechanism 3, the pressing mechanism 14, the pushing assembly 15 and the position detection device 16 are all electrically connected with the controller 4. When the device is used, a workpiece is placed on the first belt transmission assembly 6 of the feeding mechanism 1 for transmission, and the workpiece is pushed to the bearing seat 11 in the detection workbench 2 through the pushing assembly 15; the pressing mechanism 14 acts on the welding position of the workpiece according to preset pressure and keeps loading for 10-30 s; the position detection device 16 records two actual deformation quantities before and after the workpiece bears pressure and feeds the recording result back to the controller 4; the pressing mechanism 14 is reset, and the pushing assembly 15 on the feeding mechanism 1 pushes the workpiece out to the second belt transmission assembly 8 of the discharging mechanism 3; the controller 4 calculates according to a built-in mathematical model formula through the recorded actual deformation, and if the workpiece is a qualified product after calculation, the controller 4 controls the second belt transmission assembly 8 to operate in the forward direction, and the second belt transmission assembly 8 conveys the workpiece to a qualified product collection box 9; if the workpieces are unqualified products after calculation, the controller 4 controls the second belt transmission assembly 8 to reversely rotate, and the second belt transmission assembly 8 conveys the workpieces to the defective product collection box 10. Therefore, the equipment can automatically detect the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp, and has the advantages of high efficiency and high precision.
As shown in fig. 2, two mounting cavities 17 are symmetrically arranged on the upper end surface of the force bearing seat 11, a plurality of driving rollers 18 are uniformly mounted in the mounting cavities 17 along the length direction through rotating shafts, and the tops of the driving rollers 18 are higher than the top surface of the force bearing seat 11. The design can prevent the surface of the workpiece from being scratched when the workpiece moves on the bearing seat 11, not only can play a role of protecting the workpiece, but also can play a role of assisting the workpiece to move, so that the workpiece can move on the bearing seat 11 more easily.
As shown in fig. 2, a first driving motor 19 and a second driving motor 20 are respectively installed on one side of the installation cavity 17 close to the first frame 5 and one side of the installation cavity close to the second frame 7, the first driving motor 19 and the second driving motor 20 can be electrically connected with the controller 4, and then the controller 4 is used for controlling the operation of the first driving motor 19 and the second driving motor 20, a motor shaft of the first driving motor 19 is connected with a first friction roller 21, a plurality of first friction convex portions 22 are uniformly distributed on the peripheral side of the first friction roller 21, a motor shaft of the second driving motor 20 is connected with a second friction roller 23, a plurality of second friction convex portions 24 are uniformly distributed on the peripheral side of the second friction roller 23, and the tops of the first friction roller 21 and the second friction roller 23 are higher than the top surface of the force bearing seat 11. This design not only can order about the work piece displacement to pushing down the detection position under 14 of mechanism, can order about the work piece displacement to the second after the detection is accomplished and take transmission assembly 8 on moreover, has also reduced the requirement to pushing up the stroke of pushing mechanism simultaneously, greatly reduced manufacturing cost and assembly degree of difficulty.
As shown in fig. 4, a supporting frame 25 is arranged between the first frame 5 and the second frame 7, the force bearing seat 11 is arranged on the supporting frame 25, a material guiding rail 26 for connecting the first frame 5 and the force bearing seat 11 is installed on one side of the first frame 5 close to the detection workbench 2, and the tail end of the material guiding rail 26 is flush with the upper end face of the force bearing seat 11; the height of second frame 7 top surface is less than the height of bearing seat 11 top surface, the exit end of bearing seat 11 is installed and is used for connecting bearing seat 11 and second frame 7's mounting bracket 27, it is provided with first guide roll 28 and a plurality of second guide roll 29 to rotate from high to low on the mounting bracket 27, and the slope of formation between first guide roll 28 and the adjacent second guide roll 29 is greater than the slope of formation between a plurality of second guide roll 29. The support frame 25 can improve the mounting stability of the detection workbench 2, workpieces can be conveyed to the force bearing seat 11 from the first belt transmission assembly 6 through the material guide rail 26, the workpieces can be conveyed to the second belt transmission assembly 8 from the force bearing seat 11 through the first guide roller 28 and the second guide roller 29, and the slope design between the first guide roller 28 and the adjacent second guide roller 29 provides a larger initial acceleration of the workpieces, so that the workpieces can smoothly slide to the second belt transmission assembly 8 along the second guide roller 29.
As shown in fig. 2 and fig. 4, the equipment further includes two sets of pressure detection assemblies 30 symmetrically arranged on two sides of the gantry 13, each pressure detection assembly 30 includes a third driving motor 31, a lead screw 32, a slider 33 and two pressure sensors 34, a guide seat 35 is arranged on a side portion of the gantry 13, a guide groove 36 which is communicated with the inside and the outside and is matched with the slider 33 is formed in the guide seat 35, a dovetail sliding groove 37 is formed in the side portion of the slider 33 along the length direction, and a guide convex portion 38 matched with the dovetail sliding groove 37 is arranged on the inner wall of the guide groove 36; the outer end of guide holder 35 is equipped with motor mounting panel 39, third driving motor 31 is installed on motor mounting panel 39, and the motor shaft of third driving motor 31 is connected with lead screw 32, be equipped with on the slider 33 with lead screw 32 matched with screw 40, two pressure sensor 34 are installed on the interior terminal surface of slider 33, and after the work piece entered into the detection area on the load bearing seat 11, through third driving motor 31 drive lead screw 32 and rotate, lead screw 32 drives slider 33 and moves inwards, makes pressure sensor 34's probe and work piece side lower limb laminating, for ensuring that the test structure is accurate, fixed value should be selected at 10N ~1000N within range to pressure sensor 34's initial set pressure. The pressure detection assembly 30 is used for detecting workpieces with larger thickness and smaller deformation, and the combination position detection device 16 can detect the welding strength of the workpieces more accurately.
As shown in fig. 2 and fig. 3, the pressing mechanism 14 includes a hydraulic cylinder 41 disposed on the gantry 13, the hydraulic cylinder 41 can be electrically connected to the controller 4, and the controller 4 is further used to control the hydraulic cylinder 41, a pressing base 42 is disposed on an extending end of the hydraulic cylinder 41, a bottom of the pressing base 42 is in a tapered shape with a large top and a small bottom, a connecting groove 43 is disposed on an end of the pressing base 42, a pressing head 44 in a strip or round bar shape structure is inserted into the connecting groove 43, a length of the pressing head is greater than or equal to 20mm, a width of the pressing head is greater than or equal to 5mm, and the pressing head 44 is in surface contact with a surface of a workpiece during a test; the edge of the outer end of the pressure head 44 is provided with a chamfer 45, and the radius of the chamfer 45 is not less than 1 mm; the indenter 44 is made of an elastic material, and is made of plastic or other non-metallic materials, and the average hardness of the surface of the indenter should not be more than 50HV 0.1. This design can exert stable pushing down force to the welding position of work piece, and the production of work piece surface indentation can be avoided in the design of pressure head 44 elastic material, and the direct grafting complex relation of pressure head 44 and lower pressure base 42 also makes its later maintenance more convenient.
As shown in fig. 1, 5, 6, and 7, the apparatus further includes a guiding assembly 46, a monitoring assembly 47, and a straightening assembly 48 disposed on the first frame 5 along the transmission direction of the first belt transmission assembly 6, the monitoring assembly 47 and the straightening assembly 48 can be electrically connected to the controller 4, and the monitoring assembly 47 and the straightening assembly 48 can be controlled by the controller 4, the guiding assembly 46 includes fixing bases 49 symmetrically disposed on both sides of the first frame 5, the fixing bases 49 include two L-shaped clamping blocks 50, a compensation slit 51 is disposed between the two L-shaped clamping blocks 50, a semicircular clamping groove 52 is disposed on one side of the two L-shaped clamping blocks 50 corresponding to the compensation slit 51, the two semicircular clamping grooves 52 form an insertion hole 53, a support rod 54 is inserted into the insertion hole 53, the two L-shaped clamping blocks 50 are connected by a connecting bolt 55, and when the connecting bolt 55 is tightened, the two L-shaped clamping blocks 50 clamp the support rod 54, the inner end of the supporting rod 54 is connected with a guide plate 56, a guide channel 57 is formed between the two guide plates 56, and the width of the guide channel 57 is firstly reduced and then is unchanged along the conveying direction of the workpiece; the monitoring assembly 47 comprises a first bracket 58, and a CCD visual camera 59 for monitoring whether the workpiece is in a right position is mounted on the first bracket 58; the straightening assembly 48 comprises a second support 60, a first electric sliding table 61 is arranged on the second support 60, a first mounting plate 62 is arranged at the extending end of the first electric sliding table 61, a fourth driving motor 63 is arranged on the first mounting plate 62, a motor shaft of the fourth driving motor 63 is connected with a second mounting plate 64, and a pneumatic sucker 65 for sucking a workpiece is connected to the second mounting plate 64. The design can ensure that the direction of the welding seam of the product is perpendicular to the moving direction of the first belt transmission assembly 6, so that the welding seam position can be accurately acted by the pressing mechanism 14 when the product is ejected to the bearing seat 11.
As shown in fig. 8, the pushing assembly 15 includes a second electric sliding table 66 mounted on the first frame 5, a third mounting plate 67 is disposed on an extending end of the second electric sliding table 66, a cushion 68 is disposed on the third mounting plate 67, a circular groove 69 is disposed on the cushion 68, and an infrared sensor 70 is mounted at a position on the third mounting plate 67 located in the circular groove 69. The design can accurately push the workpiece to the bearing seat 11, and the cushion pad 68 plays a role in buffering, so that the surface of the workpiece can be prevented from being damaged due to rigid impact. In addition, a baffle is arranged on the first frame 5 and used for limiting the workpiece, so that the workpiece can be accurately stopped at a position to be pushed out.
The invention also provides an automatic detection method for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp, which comprises the following steps:
(1) placing the workpiece on a first belt transmission assembly of a feeding mechanism for transmission, and pushing the workpiece to a bearing seat in a detection workbench through a pushing assembly;
(2) the input ends of the pressure sensors on the two groups of pressure monitoring assemblies are respectively abutted to two sides of the workpiece, and after each pressure sensor is tightly attached to the workpiece, the numerical value displayed by the pressure sensor is reset;
(3) the pressing mechanism acts on the welding position of the workpiece according to preset pressure and keeps loading for 10-30 s;
(4) the position detection device records two actual deformation quantities before and after the workpiece bears pressure and feeds the recording results back to the controller, and meanwhile, the four pressure probes feed the pressure data measured by the four pressure probes back to the controller;
(5) the pushing assembly on the feeding mechanism pushes the workpiece out to the second belt transmission assembly of the discharging mechanism;
(6) the controller calculates according to a built-in mathematical model formula through the recorded pressure data and the actual deformation, and if the workpiece is a qualified product after calculation, the controller controls the second belt transmission assembly to operate in the forward direction, and the second belt transmission assembly conveys the workpiece to a qualified product collection box; after calculation, if the workpiece is an unqualified product, the controller controls the second belt transmission assembly to reversely rotate, and the second belt transmission assembly conveys the workpiece to a defective product collection box;
the mathematical model formula in the step (6) is as follows:
P=0.0001SHL；
in the formula:
p-set pressure in bar;
s is the area of the contact surface of the pressure head, and the unit is mm;
h-weld thickness, unit mm;
l is the length of the weld joint in mm;
and comparing the set pressure calculated according to the formula with the actual pressure obtained by calculating the recorded pressure data and the actual deformation, wherein if the actual pressure is greater than the set pressure, the product is unqualified, and if the actual pressure is not greater than the set pressure, the product is qualified.
Claims (8)
1. Dull and stereotyped and parallel groove clamp welding strength's of copper aluminium transition automatic checkout device, its characterized in that: the device comprises a feeding mechanism (1), a detection workbench (2), a discharging mechanism (3) and a controller (4), wherein the feeding mechanism (1) comprises a first rack (5) and a first belt transmission assembly (6) arranged on the first rack (5), the discharging mechanism (3) comprises a second rack (7) and a second belt transmission assembly (8) arranged on the second rack (7), and a qualified product collecting box (9) and a defective product collecting box (10) are respectively arranged below the front end and the rear end of the second rack (7); the detection workbench (2) comprises a bearing seat (11) arranged between a first rack (5) and a second rack (7), a guide groove (12) is formed in the middle of the bearing seat (11) along the length direction, a portal frame (13) is further arranged on the bearing seat (11), and a pressing mechanism (14) is mounted at the position, located right above the guide groove (12), of the top of the portal frame (13); a pushing assembly (15) used for moving a workpiece on the first belt transmission assembly (6) to the bearing seat (11) is installed on one side, far away from the detection workbench (2), of the first rack (5), a position detection device (16) used for detecting the degree of surface bending of the workpiece on the bearing seat (11) after being pressed is installed on one side, far away from the detection workbench (2), of the second rack (7), and the feeding mechanism (1), the discharging mechanism (3), the pressing mechanism (14), the pushing assembly (15) and the position detection device (16) are all electrically connected with the controller (4); two mounting cavities (17) are symmetrically arranged on the upper end face of the bearing seat (11), a plurality of driving rollers (18) are uniformly mounted in the mounting cavities (17) along the length direction through rotating shafts, and the tops of the driving rollers (18) are higher than the top face of the bearing seat (11); one side that is close to first frame (5) in installation cavity (17) and one side that is close to second frame (7) install first driving motor (19) and second driving motor (20) respectively, the motor shaft of first driving motor (19) is connected with first friction roller (21), week side evenly distributed of first friction roller (21) has a plurality of first friction convex parts (22), the motor shaft of second driving motor (20) is connected with second friction roller (23), week side evenly distributed of second friction roller (23) has a plurality of second friction convex parts (24), the top of first friction roller (21) and second friction roller (23) all is higher than the top surface of load seat (11).
2. The automatic detection device for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp according to claim 1, characterized in that: a supporting frame (25) is arranged between the first rack (5) and the second rack (7), the bearing seat (11) is arranged on the supporting frame (25), a material guide rail (26) used for connecting the first rack (5) and the bearing seat (11) is installed on one side, close to the detection workbench (2), of the first rack (5), and the tail end of the material guide rail (26) is flush with the upper end face of the bearing seat (11); the height that highly is less than load seat (11) top surface of second frame (7) top surface, install mounting bracket (27) that are used for connecting load seat (11) and second frame (7) at the exit end of load seat (11), rotation is provided with first guide roll (28) and a plurality of second guide roll (29) on mounting bracket (27) from high to low, and the slope of formation between first guide roll (28) and adjacent second guide roll (29) is greater than the slope that forms between a plurality of second guide roll (29).
3. The automatic detection device for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp according to claim 1, characterized in that: the gantry crane is characterized by further comprising two groups of pressure detection assemblies (30) which are symmetrically arranged on two sides of the gantry frame (13), wherein each pressure detection assembly (30) comprises a third driving motor (31), a lead screw (32), a sliding block (33) and two pressure sensors (34), a guide seat (35) is arranged on the lateral part of the gantry frame (13), a guide groove (36) which is communicated with the inside and the outside and is matched with the sliding block (33) is formed in the guide seat (35), a dovetail sliding groove (37) is formed in the lateral part of the sliding block (33) along the length direction, and a guide convex part (38) matched with the dovetail sliding groove (37) is arranged on the inner wall of the guide groove (36); the outer end of guide holder (35) is equipped with motor mounting panel (39), third driving motor (31) are installed on motor mounting panel (39), and the motor shaft of third driving motor (31) is connected with lead screw (32), be equipped with on slider (33) with lead screw (32) matched with screw (40), two pressure sensor (34) are installed on the interior terminal surface of slider (33).
4. The automatic detection device for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp according to claim 1, characterized in that: the lower pressing mechanism (14) comprises a hydraulic cylinder (41) arranged on a portal frame (13), a lower pressing base (42) is arranged at the extending end of the hydraulic cylinder (41), the bottom of the lower pressing base (42) is in a big-end-up conical shape, a connecting groove (43) is formed in the end of the lower pressing base (42), a pressing head (44) is inserted into the connecting groove (43), the pressing head (44) is made of elastic materials, and a chamfer (45) is arranged at the edge of the outer end of the pressing head (44).
5. The automatic detection device for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp according to claim 1, characterized in that: the belt conveyor is characterized by further comprising a guide assembly (46), a monitoring assembly (47) and a straightening assembly (48) which are arranged on the first rack (5) along the conveying direction of the first belt conveying assembly (6), wherein the guide assembly (46) comprises fixing seats (49) which are symmetrically arranged on two sides of the first rack (5), each fixing seat (49) comprises two L-shaped clamping blocks (50), a compensation seam (51) is arranged between the two L-shaped clamping blocks (50), semicircular clamping grooves (52) are formed in one sides of the two L-shaped clamping blocks (50) corresponding to the compensation seam (51), an inserting hole (53) is formed by the two semicircular clamping grooves (52), a supporting rod (54) is inserted in the inserting hole (53), the two L-shaped clamping blocks (50) are connected through connecting bolts (55), when the connecting bolts (55) are screwed, the two L-shaped clamping blocks (50) clamp the supporting rod (54), and the inner end of the supporting rod (54) is connected with a guide plate (56), a guide channel (57) is formed between the two guide plates (56), and the width of the guide channel (57) is firstly reduced and then is not changed along the workpiece conveying direction; the monitoring assembly (47) comprises a first bracket (58), and a CCD (charge coupled device) vision camera (59) for monitoring whether the workpiece is aligned is mounted on the first bracket (58); the centering assembly (48) comprises a second support (60), a first electric sliding table (61) is arranged on the second support (60), a first mounting plate (62) is arranged on the extending end of the first electric sliding table (61), a fourth driving motor (63) is mounted on the first mounting plate (62), a motor shaft of the fourth driving motor (63) is connected with a second mounting plate (64), and a pneumatic sucker (65) used for sucking a workpiece is connected onto the second mounting plate (64).
6. The automatic detection device for the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp according to claim 1, characterized in that: push up push away subassembly (15) including installing second electronic slip table (66) on first frame (5), the end that stretches out of second electronic slip table (66) is equipped with third mounting panel (67), is equipped with blotter (68) on third mounting panel (67), round groove (69) have been seted up on blotter (68), infrared sensor (70) are installed to the position that lies in round groove (69) on third mounting panel (67).
7. The method for automatically detecting the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp according to any one of claims 1 to 6, which is characterized in that: the method comprises the following steps:
(1) placing the workpiece on a first belt transmission assembly of a feeding mechanism for transmission, and pushing the workpiece to a bearing seat in a detection workbench through a pushing assembly;
(2) the input ends of the pressure sensors on the two groups of pressure monitoring assemblies are respectively abutted to two sides of the workpiece, and after each pressure sensor is tightly attached to the workpiece, the numerical value displayed by the pressure sensor is reset;
(3) the pressing mechanism acts on the welding position of the workpiece according to preset pressure and keeps loading for 10-30 s;
(4) the position detection device records two actual deformation quantities before and after the workpiece bears pressure and feeds the recording results back to the controller, and meanwhile, the four pressure probes feed the pressure data measured by the four pressure probes back to the controller;
(5) the pushing assembly on the feeding mechanism pushes the workpiece out to the second belt transmission assembly of the discharging mechanism;
(6) the controller calculates according to a built-in mathematical model formula through the recorded pressure data and the actual deformation, and if the workpiece is a qualified product after calculation, the controller controls the second belt transmission assembly to operate in the forward direction, and the second belt transmission assembly conveys the workpiece to a qualified product collection box; and after calculation, if the workpiece is an unqualified product, the controller controls the second belt transmission assembly to reversely rotate, and the second belt transmission assembly conveys the workpiece to the defective product collection box.
8. The method for automatically detecting the welding strength of the copper-aluminum transition flat plate and the parallel groove clamp according to claim 7, is characterized in that: the mathematical model formula in the step (6) is as follows:
P=0.0001SHL；
in the formula:
p-set pressure in bar;
s is the area of the contact surface of the pressure head, and the unit is mm;
h-weld thickness, unit mm;
l is the length of the weld joint in mm;
and comparing the set pressure calculated according to the formula with the actual pressure obtained by calculating the recorded pressure data and the actual deformation, wherein if the actual pressure is greater than the set pressure, the product is unqualified, and if the actual pressure is not greater than the set pressure, the product is qualified.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016065728A1 (en) * | 2014-10-31 | 2016-05-06 | 山东华芯半导体有限公司 | Method for detecting welding strength of chip bonding wire |
| CN207636467U (en) * | 2018-01-05 | 2018-07-20 | 惠州市时达创马达有限公司 | A kind of lead weld strength automatic detection device |
| CN109746195A (en) * | 2018-12-04 | 2019-05-14 | 深圳市联得自动化装备股份有限公司 | automatic detection device |
| CN110817241A (en) * | 2019-11-18 | 2020-02-21 | 湖北中纬幸和自动化设备科技有限公司 | Detection apparatus for PCB board |
| CN212410323U (en) * | 2020-06-11 | 2021-01-26 | 东莞宜安科技股份有限公司 | Detection equipment |
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2021
- 2021-05-26 CN CN202110579082.XA patent/CN113314915B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016065728A1 (en) * | 2014-10-31 | 2016-05-06 | 山东华芯半导体有限公司 | Method for detecting welding strength of chip bonding wire |
| CN207636467U (en) * | 2018-01-05 | 2018-07-20 | 惠州市时达创马达有限公司 | A kind of lead weld strength automatic detection device |
| CN109746195A (en) * | 2018-12-04 | 2019-05-14 | 深圳市联得自动化装备股份有限公司 | automatic detection device |
| CN110817241A (en) * | 2019-11-18 | 2020-02-21 | 湖北中纬幸和自动化设备科技有限公司 | Detection apparatus for PCB board |
| CN212410323U (en) * | 2020-06-11 | 2021-01-26 | 东莞宜安科技股份有限公司 | Detection equipment |
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