A continuous precision stamping automatic riveting forming device and a forming method

Abstract

The application discloses a kind of continuous precision stamping automatic riveting forming device, comprising: base platform, machine body shell, annular conveying line, rivet installation mechanism, stamping mechanism, first feeding disc, installation module, second feeding disc, discharge pipe, three-axis clamping module and control module;Rivet installation mechanism is set in the top of the base platform and is located at the outer side left end of annular conveying line;Stamping mechanism is set in the top of the base platform and is located at the outer side right end of annular conveying line;Installation module is set in the outer side of the annular conveying line and is located below the discharge port of first feeding disc.This continuous precision stamping automatic riveting forming device can realize automatic installation of rivet nut during stamping and riveting process, accurately install rivet nut to workpiece hole position inside, and ensure the stability of rivet nut during installation and movement, with high installation precision, to avoid affecting the subsequent stamping and riveting processing effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining, in particular to a continuous precision stamping automatic riveting forming device and a forming method. BACKGROUND

[0002] The riveting machine is a new type of riveting equipment developed on the basis of cold rolling principle, which refers to mechanical equipment that can rivet objects with rivets. The equipment is compact in structure, stable in performance, easy and safe to operate. The riveting machine mainly completes assembly through rotation and pressure, and is mainly used in riveting occasions requiring rivets (hollow rivets, hollow rivets, solid rivets, etc.). Commonly seen are pneumatic, oil pressure and electric, single head and double head, etc. The common types mainly include automatic riveting machine and spin riveting machine, which is divided into pneumatic spin riveting machine and hydraulic spin riveting machine, mainly used for riveting solid rivets or larger hollow rivets.

[0003] The prior art field of the utility model relates to stamping riveting forming technology, and discloses a continuous precision stamping automatic riveting forming device, which solves the problems of slow riveting efficiency, inconvenient operation and low safety of manual placement of products in the prior art. It comprises a machine box, and the machine box is connected with a workbench at the upper end. The utility model realizes continuous operation and high work efficiency, and is convenient to operate. The new type of workpiece placement does not need to be placed manually under the riveting head. Only need to be placed in other workstations relative to the riveting head on the rotating table, effectively avoiding hand injury caused by the riveting head. The second motor drives the cam to rotate, so that the roller rolls along the outer wall of the cam, and the stop rod moves up and down and is inserted into the clamping groove to limit the rotating table, so that the rotating table can be fixed during stamping and riveting, and the riveting is precise.

[0004] However, the rivet nut installation of the device still needs to be manually calibrated, positioned and installed by the workers, and the accuracy of the installation cannot be guaranteed during the rivet nut installation process, and the installed rivet nut cannot keep vertical with the workpiece, thereby affecting the subsequent stamping and riveting processing effect. SUMMARY

[0005] The present application aims to provide a continuous precision stamping automatic riveting forming device and a forming method to at least solve the problem that the rivet nut installation of the prior art still needs to be manually calibrated, positioned and installed by the workers, and the accuracy of the installation cannot be guaranteed during the rivet nut installation process, and the installed rivet nut cannot keep vertical with the workpiece, thereby affecting the subsequent stamping and riveting processing effect.

[0006] To achieve the above object, the present application provides the following technical scheme: a continuous precision stamping automatic riveting forming device, comprising: a base platform, a machine body shell, an annular conveying line, a rivet mounting mechanism, a stamping mechanism, a first feeding disc, a mounting module, a second feeding disc, a discharge pipe, a three-axis clamping module and a control module;

[0007] The machine body shell is arranged on the top of the base platform along the left-right direction; the annular conveying line is mounted on the top end of the base platform along the left-right direction; the rivet mounting mechanism is arranged on the top end of the base platform and located at the outer left end of the annular conveying line; the stamping mechanism is arranged on the top end of the base platform and located at the outer right end of the annular conveying line, the first feeding disc is arranged on the top end of the base platform and located in front of the left side of the annular conveying line; the mounting module is arranged outside the annular conveying line and below the discharge port of the first feeding disc; the second feeding disc is arranged on the top end of the base platform and located behind the rivet mounting mechanism; the discharge pipe is arranged on the top end of the base platform and located at the right rear of the annular conveying line, the discharge port of the discharge pipe extends outside from the opening on the outer side of the machine body shell; the three-axis clamping module is arranged on the top of the base platform and located at the feeding port position of the discharge pipe; the control module is mounted on the outer wall of the machine body shell, and the control module is electrically connected with the annular conveying line, the first feeding disc, the mounting module, the second feeding disc and the three-axis clamping module respectively.

[0008] Preferably, in order to realize the automatic installation of rivet nuts and realize the installation of rivet nuts in multiple workpiece installation holes, the rivet installation mechanism comprises: a mounting seat, a slot block, a guide pipe, a baffle module, a first electric push rod, a clamping groove seat, a first lifting module, an air pump, a slot hole and a rivet moving assembly; the mounting seat is arranged below the annular conveying line in the front-rear direction; the slot block is arranged at the top end of the mounting seat and on the inner side of the annular conveying line in the front-rear direction; the guide pipe is arranged at the discharge port position of the second feeding disc in the front-rear direction, and the bottom end of the guide pipe extends into the top end rear opening of the slot block; the baffle module is arranged at the rear top end of the slot block in the front-rear direction, the telescopic end of the baffle module extends into the rear side of the inner cavity of the slot block, and the baffle module is electrically connected with the control module; the first electric push rod is arranged at the front top end of the mounting seat in the front-rear direction, the telescopic end of the first electric push rod extends into the inner side of the mounting seat, and the first electric push rod is electrically connected with the control module; the clamping groove seat is inserted into the inner side of the slot block in the front-rear direction, the front side of the clamping groove seat extends out of the front side opening of the slot block and is fixedly connected with the telescopic end of the first electric push rod; the first lifting module is arranged at the inner side front end of the mounting seat in the up-down direction, and the first lifting module is electrically connected with the control module; the air pump is installed at the top of the lifting end of the first lifting module, and the air pump is electrically connected with the control module; the slot hole is opened at the up-down two sides front end of the slot block, and the inner side of the slot hole communicates with the inner cavity of the slot block; the rivet moving assembly is arranged below the lifting end of the first lifting module.

[0009] Preferably, in order to realize the installation of rivet nuts and make the movement more stable to ensure the accuracy after installation, the rivet moving assembly comprises: a rivet moving assembly shell, a micro electric push rod, a lifting seat, an airtight valve head and an air bag; the rivet moving assembly shell is arranged at the bottom of the lifting end of the first lifting module in the up-down direction, and the rivet moving assembly shell is adaptively inserted into the inner cavity of the top slot hole; the micro electric push rod is arranged in the inner cavity of the rivet moving assembly shell in the up-down direction, and the micro electric push rod is electrically connected with the control module; the lifting seat is arranged at the lifting end of the micro electric push rod; the airtight valve head is arranged below the lifting seat, the air inlet of the airtight valve head can be connected with the air pump through the airtight pipe; and the air bag is installed below the air outlet of the airtight valve head.

[0010] Preferably, in order to realize the stamping operation of the rivet nut, the stamping mechanism comprises a base, a shell, a second lifting module, a continuous stamping assembly, a second electric push rod and a deformation limiting assembly; the base is arranged at the inner bottom end of the annular conveying line; the shell is arranged at the top end of the base; the second lifting module is arranged at the inner top end front side of the shell in the up-down direction, and the second lifting module and the control module are electrically connected; the continuous stamping assembly is arranged at the lifting end of the second lifting module; the second electric push rod is arranged at the front side of the base in the front-rear direction, and the second electric push rod and the control module are electrically connected; and the deformation limiting assembly is arranged at the telescopic end of the second electric push rod.

[0011] Preferably, in order to realize the continuous and accurate stamping of the rivet nut, the continuous stamping assembly comprises a continuous stamping shell, a bottom plate, a limiting spring rod, a top plate, a micro motor, a slot seat, a moving seat, an eccentric wheel, a mounting seat, a first connecting rod, a connecting seat, a connecting frame and a pressing head; the continuous stamping shell is installed at the lifting end of the second lifting module in the up-down direction; the bottom plate is arranged below the inner cavity of the continuous stamping shell; the number of the limiting spring rods is three, and the three limiting spring rods are arranged at the top end of the bottom plate at an interval of one hundred and twenty degrees in the circumferential direction; the top plate is inserted at the top of the three limiting spring rods; the micro motor is installed in the inner cavity of the continuous stamping shell, and the micro motor and the control module are electrically connected; the slot seat is arranged at the top of the inner cavity of the continuous stamping shell; the moving seat is inserted in the inner cavity of the slot seat, and the bottom of the moving seat is fixedly connected with the top end of the top plate; the eccentric wheel is rotatably connected in the inner cavity of the moving seat through a bearing, and the shaft center of the eccentric wheel is fixedly connected with the output end of the micro motor; the number of the mounting seats is three, and the three mounting seats are arranged at the bottom middle part of the top plate at an interval of one hundred and twenty degrees in the circumferential direction; the number of the first connecting rods is three, and one end of the three first connecting rods is rotatably connected with the bottom end of the three mounting seats through a pin shaft; the number of the connecting seats is three, one end of the connecting seat is rotatably connected with the other end of the three first connecting rods through a pin shaft, the three connecting seats are adaptively inserted with the outer side limiting slots of the bottom plate and extend out of the lower surface of the continuous stamping shell; the connecting frame is rotatably connected with the inner side of the three connecting seats through a pin shaft; and the pressing head is arranged at the bottom end of the connecting frame in the up-down direction.

[0012] Preferably, in order to realize the stable deformation of the rivet nut during the force deformation process, prevent the position deviation of the rivet nut after the force deformation, and further affect the machining precision, the deformation limiting assembly comprises a deformation limiting assembly shell, a through hole, a limiting sliding groove base, a limiting sliding groove base, a limiting seat, a limiting sliding groove top, a lead screw lifting module and a second connecting rod; the deformation limiting assembly shell is installed along the front and back directions at the telescopic end of the second electric push rod; the through hole is opened at the top of the inner cavity of the deformation limiting assembly shell; the limiting sliding groove base is installed at the bottom end of the inner cavity of the deformation limiting assembly shell, and the outer side of the limiting sliding groove base is provided with a slot at intervals of 120 degrees in the circumferential direction; the number of the limiting seats is three, and the three limiting seats are inserted into the inner cavity of the slot on the outer side of the limiting sliding groove base; the limiting sliding groove top is installed at the top of the limiting sliding groove base, and the outer side of the limiting sliding groove top is provided with a clamping groove adapted for insertion of the top of the three limiting seats at intervals of 120 degrees in the circumferential direction; the lead screw lifting module is installed at the inner side of the limiting sliding groove base along the up and down directions, and the lead screw lifting module is electrically connected with the control module; the number of the second connecting rods is three, and the three second connecting rods are respectively connected with the moving end of the lead screw lifting module through pin shaft rotation at intervals of 120 degrees in the circumferential direction, and the other ends of the three second connecting rods are respectively connected with the inner side of the three limiting seats through pin shaft rotation.

[0013] Compared with the prior art, the beneficial effects of the present application are:

[0014] 1. The annular conveying line drives the internal mold to move circumferentially, the first feeding disc carries the riveting workpiece in the internal mold to the corresponding position of the installation module, the installation module installs the riveting workpiece in the first feeding disc in the internal mold of the annular conveying line, the second feeding disc conveys the rivet to the inside of the guide pipe and enters the inside of the clamping groove seat along the guide pipe and is clamped and fixed, the baffle module makes the internal baffle intermittently close the bottom of the second feeding disc, the first electric push rod drives the clamping groove seat to move forward in the inner cavity of the slot block to the inside of the slot hole, the micro electric push rod drives the lifting seat to move downward, inserts the air bag into the inner cavity of the rivet nut, and the air pump expands the air bag in the inner cavity of the rivet nut to fix the rivet nut, and the first lifting module drives the rivet moving assembly to move downward, and the rivet moving assembly pushes the rivet nut to be inserted into the inner cavity of the workpiece from the inside of the clamping groove seat to bend and sink the installation of the rivet:

[0015] 2, the second electric push rod drives the deformation limiting assembly to insert into the inside of the mold and be located below the rivet nut, the bottom of the rivet nut is expanded and deformed to be located inside the limiting seat, the second lifting module is elongated to drive the continuous stamping assembly to move to the position above the rivet nut of the workpiece, the miniature motor drives the eccentric wheel to eccentrically rotate inside the moving seat, so that the eccentric wheel reciprocates under the rotation force of the moving seat and the limiting action of the slot seat, and the moving seat drives the top plate to reciprocate up and down under the limiting action of the limiting spring rod, the top plate drives the mounting seat to drive the connecting frame to move downward to press the rivet nut in the riveting workpiece under the cooperation of the first connecting rod and the connecting seat, the rivet nut is deformed in the riveting workpiece, at the same time, the screw lifting module drives the moving end to move downward, and drives under the cooperation of the second connecting rod; under the limiting action of the limiting sliding groove top seat and the limiting sliding groove bottom seat, it moves outward synchronously with the expansion of the rivet nut, so as to limit the rivet nut during the deformation process;

[0016] Thus, the rivet nut can be automatically installed during the stamping and riveting process, the rivet nut can be accurately installed in the workpiece hole, and the stability of the rivet nut during installation and movement can be ensured, the installation precision is high, and the influence of subsequent stamping and riveting processing effect is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure of the present application is shown in the figure;

[0018] Figure 2 The explosion diagram of Figure 1

[0019] Figure 3 The rivet installation mechanism explosion diagram of Figure 2

[0020] Figure 4 The rivet moving assembly explosion diagram of Figure 3

[0021] Figure 5 The stamping mechanism explosion diagram of Figure 2

[0022] Figure 6 The continuous stamping assembly explosion diagram of Figure 5

[0023] Figure 7 The deformation limiting assembly explosion diagram of Figure 5

[0024] ​​​​​​In the figure: 1, base platform, 2, machine body shell, 3, annular conveying line, 4, rivet mounting mechanism, 41, mounting seat, 42, slot block, 43, guide pipe, 44, baffle module, 45, first electric push rod, 46, clamping groove seat, 47, first lifting module, 48, air pump, 49, slot hole, 5, rivet moving assembly, 51, rivet moving assembly shell, 52, micro electric push rod, 53, lifting seat, 54, air-tight valve head, 55, air bag, 6, stamping mechanism, 61, base, 62, shell, 63, second lifting module, 64, second electric push rod, 7, continuous stamping assembly, 71, continuous stamping shell, 72, bottom plate, 73, limit spring rod, 74, top plate, 75, micro motor, 76, slot seat, 77, moving seat, 78, eccentric wheel, 79, mounting seat, 710, first connecting rod, 711, connecting seat, 712, connecting frame, 713, pressing head, 8, deformation limiting assembly, 81, deformation limiting assembly shell, 82, through hole, 83, limit sliding groove base, 84, limit seat, 85, limit sliding groove top seat, 86, lead screw lifting module, 87, second connecting rod, 9, first feeding disc, 10, mounting module, 11, second feeding disc, 12, discharge pipe, 13, three-axis clamping module, 14, control module. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0026] Please refer to Figures 1-7The application provides a technical scheme: a continuous precision stamping automatic riveting forming device, which comprises a base platform 1, a machine body shell 2, an annular conveying line 3, a rivet mounting mechanism 4, a stamping mechanism 6, a first feeding disc 9, a mounting module 10, a second feeding disc 11, a discharging pipe 12, a three-axis clamping module 13 and a control module 14; the machine body shell 2 is arranged on the top of the base platform 1 along the left-right direction; the annular conveying line 3 is arranged at the top end of the base platform 1 along the left-right direction, the annular conveying line 3 can be controlled through the control module 14, and a plurality of molds are arranged in the annular conveying line 3 in a circumferential direction; the rivet mounting mechanism 4 is arranged at the top end of the base platform 1 and located at the outer left end of the annular conveying line 3; the stamping mechanism 6 is arranged at the top end of the base platform 1 and located at the outer right end of the annular conveying line 3; the first feeding disc 9 is arranged at the top end of the base platform 1 and located in front of the left side of the annular conveying line 3, the first feeding disc 9 can be controlled through the control module 14, the first feeding disc 9 is filled with riveting workpieces in advance, and the riveting workpieces in the first feeding disc 9 are carried to the corresponding position of the mounting module 10; the mounting module 10 is arranged outside the annular conveying line 3 and below the discharge port of the first feeding disc 9, the mounting module 10 can be controlled through the control module 14, and the mounting module 10 can clamp and mount the riveting workpieces in the molds in the annular conveying line 3; the second feeding disc 11 is arranged at the top end of the base platform 1 and located behind the rivet mounting mechanism 4, the second feeding disc 11 can be controlled through the control module 14, the second feeding disc 11 is filled with rivet nuts in advance, and the rivet nuts in the second feeding disc 11 are transported to the inner side of the conveying pipe 43; the discharging pipe 12 is arranged at the top end of the base platform 1 and located at the right rear of the annular conveying line 3, and the discharge port of the discharging pipe 12 extends outside from the outer opening of the machine body shell 2; the three-axis clamping module 13 is arranged at the top of the base platform 1 and located at the feeding port position of the discharging pipe 12, the three-axis clamping module 13 can be controlled through the control module 14, the three-axis clamping module 13 can move and place the riveting workpieces in the annular conveying line 3 after being disassembled to the discharging pipe 12, and then the riveting workpieces are transported to the outside through the discharging pipe 12 for centralized processing; the control module 14 is arranged on the outer wall of the machine body shell 2, the control module 14 is electrically connected with the annular conveying line 3, the first feeding disc 9, the mounting module 10, the second feeding disc 11 and the three-axis clamping module 13 respectively, and a logic program can be installed and edited in the control module 14 to replace manual operation of workers.

[0027] As a preferred scheme, further, Figure 3As shown, the rivet mounting mechanism 4 comprises: a mounting base 41, a slot block 42, a guide pipe 43, a baffle module 44, a first electric push rod 45, a clamping groove seat 46, a first lifting module 47, an air pump 48, a slot hole 49 and a rivet moving assembly 5; the mounting base 41 is arranged below the annular conveying line 3 in the front-rear direction; the slot block 42 is arranged at the top end of the mounting base 41 and located on the inner side of the annular conveying line 3 in the front-rear direction; the guide pipe 43 is arranged at the discharge port position of the second feeding disc 11 in the front-rear direction, and the bottom end of the guide pipe 43 extends into the top end rear opening of the slot block 42; the baffle module 44 is arranged at the rear top end of the slot block 42 in the front-rear direction, the telescopic end of the baffle module 44 extends into the rear side of the inner cavity of the slot block 42, the baffle module 44 is electrically connected with the control module 14, the baffle module 44 can be controlled by the control module 14, and the baffle module 44 makes the internal baffle thereof intermittent closed by elongation and shortening of itself, so as to realize orderly discharging; the first electric push rod 45 is arranged at the front top end of the mounting base 41 in the front-rear direction, the telescopic end of the first electric push rod 45 extends into the inner side of the mounting base 41, the first electric push rod 45 is electrically connected with the control module 14, the first electric push rod 45 can be controlled by the control module 14, and the first electric push rod 45 drives the clamping groove seat 46 to move forward and backward in the inner cavity of the slot block 42 by elongation and shortening of itself; the clamping groove seat 46 is inserted into the inner side of the slot block 42 in the front-rear direction, the front side of the clamping groove seat 46 extends out of the front opening of the slot block 42 and is fixedly connected with the telescopic end of the first electric push rod 45; the first lifting module 47 is arranged at the inner side front end of the mounting base 41 in the up-down direction, the first lifting module 47 is electrically connected with the control module 14, the first lifting module 47 can be controlled by the control module 14, and the first lifting module 47 drives the rivet moving assembly 5 to move up and down by elongation and shortening of itself; the air pump 48 is installed at the top of the lifting end of the first lifting module 47, the air pump 48 is electrically connected with the control module 14, the air pump 48 can be controlled by the control module 14, and the air pump 48 injects air into the air bag 55 through the air-tight pipe; the slot hole 49 is arranged at the up-down two sides front end of the slot block 42, the inner side of the slot hole 49 communicates with the inner cavity of the slot block 42; and the rivet moving assembly 5 is arranged below the lifting end of the first lifting module 47.

[0028] As a preferred solution, further, as Figure 4As shown, the rivet moving assembly 5 comprises; a rivet moving assembly shell 51, a micro electric push rod 52, a lifting seat 53, a gas-tight valve head 54 and a gas bag 55; the rivet moving assembly shell 51 is arranged at the bottom of the lifting end of the first lifting module 47 in the up-down direction, and the rivet moving assembly shell 51 is adaptively inserted into the inner cavity of the top slot hole 49; the micro electric push rod 52 is arranged in the inner cavity of the rivet moving assembly shell 51 in the up-down direction, and the micro electric push rod 52 is electrically connected with the control module 14, so that the micro electric push rod 52 can be controlled to elongate or shorten by the control module 14; the lifting seat 53 is arranged at the lifting end of the micro electric push rod 52; the gas-tight valve head 54 is arranged below the lifting seat 53, and the gas inlet of the gas-tight valve head 54 can be connected with the air pump 48 through the gas-tight tube; the gas bag 55 is installed below the gas outlet of the gas-tight valve head 54, and the gas bag 55 is fixed to the rivet nut by expanding in the inner cavity of the rivet nut.

[0029] As a preferred solution, further, as shown in Figure 5 As shown, the stamping mechanism 6 comprises; a base 61, a shell 62, a second lifting module 63, a continuous stamping assembly 7, a second electric push rod 64 and a deformation limiting assembly 8; the base 61 is arranged at the inner bottom end of the annular conveying line 3; the shell 62 is arranged at the top end of the base 61; the second lifting module 63 is arranged at the inner top end of the shell 62 in the up-down direction, and the second lifting module 63 is electrically connected with the control module 14, so that the second electric push rod 64 can be controlled to elongate or shorten by the control module 14 to drive the continuous stamping assembly 7 to move to a specified position; the continuous stamping assembly 7 is arranged at the lifting end of the second lifting module 63; the second electric push rod 64 is arranged at the front side of the base 61 in the front-back direction, and the second electric push rod 64 is electrically connected with the control module 14, so that the second electric push rod 64 can be controlled to elongate or shorten by the control module 14; the deformation limiting assembly 8 is arranged at the telescopic end of the second electric push rod 64.

[0030] As a preferred solution, further, as shown in Figure 6As shown, the continuous punching assembly 7 comprises a continuous punching shell 71, a bottom plate 72, a limiting spring rod 73, a top plate 74, a micro motor 75, a slot seat 76, a moving seat 77, an eccentric wheel 78, a mounting seat 79, a first connecting rod 710, a connecting seat 711, a connecting frame 712 and a pressing head 713. The continuous punching shell 71 is installed on the lifting end of the second lifting module 63 in the up-down direction. The bottom plate 72 is arranged below the inner cavity of the continuous punching shell 71. The number of the limiting spring rods 73 is three, and the three limiting spring rods 73 are arranged at the top end of the bottom plate 72 at an interval of one hundred and twenty degrees in the circumferential direction. The inner side of the limiting spring rod 73 is provided with a spring, and the top plate 74 can move up and down on the outer side of the limiting spring rod 73. The top plate 74 is inserted at the top of the three limiting spring rods 73. The micro motor 75 is installed in the inner cavity of the continuous punching shell 71. The micro motor 75 and the control module 14 are electrically connected, and the micro motor 75 can be controlled and driven by the control module 14 to eccentrically rotate the eccentric wheel 78 inside the moving seat 77. The slot seat 76 is arranged at the top of the inner cavity of the continuous punching shell 71, and the slot seat 76 can limit the moving seat 77 to move up and down. The moving seat 77 is inserted into the inner cavity of the slot seat 76, and the bottom of the moving seat 77 is fixedly connected with the top end of the top plate 74. The eccentric wheel 78 is rotatably connected to the inner cavity of the moving seat 77 through a bearing, and the shaft center of the eccentric wheel 78 is fixedly connected with the output end of the micro motor 75. The eccentric wheel 78 eccentrically rotates to drive the moving seat 77 to synchronously eccentrically move. The number of the mounting seats 79 is three, and the three mounting seats 79 are arranged at the bottom middle part of the top plate 74 at an interval of one hundred and twenty degrees in the circumferential direction. The number of the first connecting rods 710 is three, and one end of the three first connecting rods 710 is rotatably connected to the bottom end of the three mounting seats 79 through a pin shaft. The number of the connecting seats 711 is three, and one end of the connecting seat 711 is rotatably connected with the other end of the three first connecting rods 710 through a pin shaft. The three connecting seats 711 are adaptively inserted into the limiting grooves outside the bottom plate 72 and extend out of the lower surface of the continuous punching shell 71. The connecting seat 711 can move up and down in the inner cavity of the limiting groove outside the bottom plate 72. The connecting frame 712 is rotatably connected to the inner side of the three connecting seats 711 through a pin shaft. The pressing head 713 is arranged at the bottom end of the connecting frame 712 in the up-down direction.

[0031] As a preferred solution, further, as Figure 7As shown, the deformation limiting assembly 8 comprises a deformation limiting assembly shell 81, a through hole 82, a limiting sliding groove base 83, a limiting sliding groove base 83, a limiting seat 84, a limiting sliding groove top base 85, a lead screw lifting module 86 and a second connecting rod 87; the deformation limiting assembly shell 81 is installed along the front-rear direction at the telescopic end of the second electric push rod 64; the through hole 82 is opened at the top of the inner cavity of the deformation limiting assembly shell 81; the limiting sliding groove base 83 is installed at the bottom end of the inner cavity of the deformation limiting assembly shell 81, and the outer side of the limiting sliding groove base 83 is opened with a slot at intervals of 120 degrees in the circumferential direction; the number of limiting seats 84 is three, the three limiting seats 84 are inserted into the inner cavity of the outer side slot of the limiting sliding groove base 83, and the inner side top end of the limiting seat 84 is provided with a clamping groove frame which can play a limiting role in the deformation process of the rivet nut; the limiting sliding groove top base 85 is installed at the top end of the limiting sliding groove base 83, and the outer side of the limiting sliding groove top base 85 is opened with a clamping groove adapted for insertion at the top of the three limiting seats 84 at intervals of 120 degrees in the circumferential direction, and the limiting seat 84 can move in and out of the inner cavity of the clamping groove of the limiting sliding groove top base 85; the lead screw lifting module 86 is installed along the up-down direction at the inner side of the limiting sliding groove base 83, the lead screw lifting module 86 and the control module 14 are electrically connected, the lead screw lifting module 86 is internally provided with a motor, a lead screw and a lead screw nut, the lead screw nut is driven to move in the up-down direction as an upgrade end, and the lead screw lifting module 86 can control and drive the eccentric wheel 78 to eccentrically rotate in the inner side of the moving seat 77 through the control module 14; the number of the second connecting rods 87 is three, the three second connecting rods 87 are respectively connected through pin shafts at the moving end of the lead screw lifting module 86 at intervals of 120 degrees in the circumferential direction, and the other end of the three second connecting rods 87 is respectively connected through pin shafts with the inner side of the three limiting seats 84.

[0032] A forming method of a continuous precision stamping automatic riveting forming device, specifically as follows:

[0033] Before use, the staff preloads the riveting workpiece inside the first feeding tray 9, preloads the rivet nut inside the second feeding tray 11, and the staff operates the control module 14 to start the annular conveying line 3, the first feeding tray 9, the mounting module 10, the second feeding tray 11, the baffle module 44, the first electric push rod 45, the first lifting module 47, the micro electric push rod 52 and the air pump 48 in turn. The annular conveying line 3 starts to drive the internal mold to move circumferentially. The first feeding tray 9 carries the riveting workpiece inside itself to the corresponding position of the mounting module 10. The mounting module 10 installs the riveting workpiece inside the first feeding tray 9 in the internal mold of the annular conveying line 3. The second feeding tray 11 conveys the internal rivet to the inside of the guide pipe 43 and enters the clamping groove seat 46 inside along the guide pipe 43 and is clamped and fixed. The baffle module 44 makes the internal baffles intermittently close the bottom of the second feeding tray 11 by elongating and shortening itself, so as to realize orderly discharging. The first electric push rod 45 is shortened to drive the clamping groove seat 46 to move forward in the inner cavity of the slot block 42 to the inside of the slot hole 49. The micro electric push rod 52 is elongated to drive the lifting seat 53 to move downward in the inner cavity of the rivet moving assembly shell 51, and make the air bag 55 insert into the inner cavity of the rivet nut. The air pump 48 injects air into the inner cavity of the air bag 55 through the air-tight tube to make it expand in the inner cavity of the rivet nut to fix the rivet nut. The first lifting module 47 is elongated to drive the rivet moving assembly 5 to move downward, and make the rivet moving assembly 5 push the rivet nut to insert into the inner cavity of the workpiece through the inner cavity of the lower slot hole 49 from the inside of the clamping groove seat 46.

[0034] After the rivet is installed, the workpiece is conveyed to the stamping mechanism 6. The staff controls the control module 14 to start the second electric push rod 64, the second lifting module 63, the micro motor 75 and the screw lifting module 86 in turn. The second electric push rod 64 is elongated to drive the deformation limiting assembly 8 to insert into the inside of the mold and be located below the rivet nut, so that the bottom of the rivet nut is deformed and expanded to be located inside the limiting seat 84. The second lifting module 63 is elongated to drive the continuous stamping assembly 7 to move above the rivet nut position of the workpiece. The micro motor 75 drives the eccentric wheel 78 to rotate eccentrically inside the moving seat 77, and then makes the eccentric wheel 78 reciprocate under the rotation force of the moving seat 77 and the limiting action of the slot seat 76, and makes the moving seat 77 drive the top plate 74 to reciprocate upward and downward under the limiting action of the limiting spring rod 73, and makes the top plate 74 drive the mounting seat 79 to drive the connecting frame 712 to move downward to press the rivet nut in the riveting workpiece under the cooperation of the first connecting rod 710 and the connecting seat 711. The rivet nut is deformed in the riveting workpiece, and at the same time, the screw lifting module 86 drives the moving end to move downward, and drives the limiting seat 84 under the cooperation of the second connecting rod 87 and the limiting action of the limiting sliding groove top seat 85 and the limiting sliding groove bottom seat 83 to move outward to limit the deformation of the rivet nut.

[0035] Therefore, the rivet nut can be automatically installed in the stamping and riveting process, the rivet nut is accurately installed into the workpiece hole, the stability of the rivet nut during installation and movement is ensured, the installation precision is high, and the subsequent stamping and riveting processing effect is avoided from being affected.

[0036] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A continuous precision stamping automatic rivet forming device, characterized by, The utility model relates to a rivet installation mechanism, rivet installation mechanism includes: Base platform (1); Machine body shell (2) are set up in the top of base platform (1) along left and right directions; Annular conveying line (3) are installed in the top of base platform (1) along left and right directions; Rivet installation mechanism (4) are set up in the top of base platform (1) and are located at the left end outside annular conveying line (3); Punching mechanism (6) are set up in the top of base platform (1) and are located at the right end outside annular conveying line (3); First feeding disc (9) are set up in the top of base platform (1) and are located at the left front of annular conveying line (3); Mounting module (10) are set up in the outside of annular conveying line (3) and are located below the discharge port of first feeding disc (9); Second feeding disc (11) are set up in the top of base platform (1) and are located behind rivet installation mechanism (4); Discharge pipe (12) are set up in the top of base platform (1) and are located at the right rear of annular conveying line (3), and the discharge port of discharge pipe (12) extends outside from the outside opening of machine body shell (2); Three-axis clamping module (13) are set up in the top of base platform (1) and are located at the feeding port position of discharge pipe (12); Control module (14) are installed on the outer wall of machine body shell (2), and control module (14) is electrically connected with annular conveying line (3), first feeding disc (9), mounting module (10), second feeding disc (11) and three-axis clamping module (13) respectively; The rivet installation mechanism (4) includes; Mounting seat (41) are set up in the below of annular conveying line (3) along front and back directions; Slot block (42) are set up in the top of mounting seat (41) along front and back directions and are located at the inside of annular conveying line (3); Conduit (43) are set up in the discharge port position of second feeding disc (11) along front and back directions, and the bottom end of conduit (43) extends into the top rear opening of slot block (42); Baffle module (44) are set up in the rear top end of slot block (42) along front and back directions, the telescopic end of baffle module (44) extends into the rear inside of slot block (42), and baffle module (44) is electrically connected with control module (14); First electric push rod (45) are set up in the front top end of mounting seat (41) along front and back directions, the telescopic end of first electric push rod (45) extends into the inside of mounting seat (41), and first electric push rod (45) is electrically connected with control module (14); Slot seat (46) are inserted in the inside of slot block (42) along front and back directions, the front side of slot seat (46) extends out the front opening of slot block (42) and is fixedly connected with the telescopic end of first electric push rod (45); First lifting module (47) are set up in the inside front end of mounting seat (41) along up and down directions, and first lifting module (47) is electrically connected with control module (14); Air pump (48) are installed on the lifting end top of first lifting module (47), and air pump (48) is electrically connected with control module (14); Slot holes (49) are arranged on the upper and lower sides of the front end of the slot block (42), and the inner side of the slot hole (49) is communicated with the inner cavity of the slot block (42); The rivet moving assembly (5) is arranged below the lifting end of the first lifting module (47); The rivet moving assembly (5) comprises; The rivet moving assembly shell (51) is arranged at the bottom of the lifting end of the first lifting module (47) in the up-down direction, and the rivet moving assembly shell (51) is adaptively connected with the inner cavity of the top slot hole (49); The micro electric push rod (52) is arranged in the inner cavity of the rivet moving assembly shell (51) in the up-down direction, and the micro electric push rod (52) is electrically connected with the control module (14); The lifting seat (53) is arranged at the lifting end of the micro electric push rod (52); The air-tight valve head (54) is arranged below the lifting seat (53), and the air inlet of the air-tight valve head (54) can be connected with the air pump (48) through the air-tight tube; The air bag (55) is installed below the air outlet of the air-tight valve head (54).

2. The apparatus according to claim 1, wherein: The stamping mechanism (6) comprises: The base (61) is arranged at the inner bottom end of the annular conveying line (3); The shell (62) is arranged at the top end of the base (61); The second lifting module (63) is arranged at the inner top front side of the shell (62) in the up-down direction, and the second lifting module (63) is electrically connected with the control module (14); The continuous stamping assembly (7) is arranged at the lifting end of the second lifting module (63); The second electric push rod (64) is arranged at the front side of the base (61) in the front-rear direction, and the second electric push rod (64) is electrically connected with the control module (14); The deformation limiting assembly (8) is arranged at the telescopic end of the second electric push rod (64).

3. The apparatus according to claim 2, wherein: The continuous stamping assembly (7) comprises: The continuous stamping shell (71) is installed at the lifting end of the second lifting module (63) in the up-down direction; The bottom plate (72) is arranged below the inner cavity of the continuous stamping shell (71); The limiting spring rod (73) is arranged at the top end of the bottom plate (72) in the circumferential direction at intervals of 120 degrees, and the number of the limiting spring rod (73) is three; The top plate (74) is inserted at the top of the three limiting spring rods (73); The micro electric machine (75) is installed in the inner cavity of the continuous stamping shell (71), and the micro electric machine (75) is electrically connected with the control module (14); The slot seat (76) is arranged at the top of the inner cavity of the continuous stamping shell (71); The moving seat (77) is inserted in the inner cavity of the slot seat (76), and the bottom of the moving seat (77) is fixedly connected with the top end of the top plate (74); The eccentric wheel (78) is rotatably connected in the inner cavity of the moving seat (77) through a bearing, and the shaft center of the eccentric wheel (78) is fixedly connected with the output end of the micro electric machine (75); The mounting seat (79) is arranged at the bottom middle part of the top plate (74) in the circumferential direction at intervals of 120 degrees, and the number of the mounting seat (79) is three. First connecting rod (710), the number of first connecting rod (710) is three, one end of three first connecting rod (710) is rotatably connected through the pin shaft at the bottom end of three mounting seat (79); Connecting seat (711), the number of connecting seat (711) is three, one end of connecting seat (711) is rotatably connected through the pin shaft at the other end of first connecting rod (710), three connecting seat (711) is inserted and connected with the outside limit slot of bottom plate (72) and extends out of the lower surface of continuous stamping shell (71); Connecting frame (712) is rotatably connected through the pin shaft at the inside of three connecting seat (711); Pressing head (713) is arranged at the bottom end of connecting frame (712) in the up-down direction.

4. The apparatus according to claim 3, wherein: The deformation limiting assembly (8) comprises; The deformation limiting assembly shell (81) is installed in the telescopic end of the second electric push rod (64) in the front-rear direction; The through hole (82) is opened in the inner cavity top of the deformation limiting assembly shell (81); The limit sliding groove base (83) is installed at the inner cavity bottom end of the deformation limiting assembly shell (81), and the outside of the limit sliding groove base (83) is opened with the insertion slot in the interval of one hundred and twenty degrees in the circumferential direction; The limit seat (84) is three, and the three limit seats (84) are inserted into the inner cavity of the outside insertion slot of the limit sliding groove base (83); The limit sliding groove top base (85) is installed at the top end of the limit sliding groove base (83), and the outside of the limit sliding groove top base (85) is opened with the clamping slot matched with the top of the three limit seats (84) in the interval of one hundred and twenty degrees in the circumferential direction; The screw rod lifting module (86) is installed at the inside of the limit sliding groove base (83) in the up-down direction, and the screw rod lifting module (86) and the control module (14) are electrically connected; The second connecting rod (87) is three, and the three second connecting rods (87) are rotatably connected through the pin shaft at the moving end of the screw rod lifting module (86) in the interval of one hundred and twenty degrees in the circumferential direction, and the other end of the three second connecting rods (87) is rotatably connected with the inside of the three limit seats (84) through the pin shaft.

5. The method of forming according to claim 4, wherein: The steps include: Step one: the annular conveying line (3) drives the internal mold to move in the circumferential direction, the first feeding disc (9) carries the riveting workpiece in the inside to the corresponding position of the installation module (10), and the installation module (10) installs the riveting workpiece in the first feeding disc (9) in the internal mold inside the annular conveying line (3); Step two: the second feeding disc (11) conveys the internal rivet to the inside of the guide pipe (43) and enters the clamping groove seat (46) inside along the guide pipe (43) and is clamped and fixed, and the baffle module (44) makes the inside baffle intermittently close the bottom of the second feeding disc (11), so as to realize the orderly discharge. Step three: the first electric push rod (45) drives the clamping groove seat (46) to move forward in the inner cavity of the insertion groove block (42) to the inside of the insertion groove hole (49), the micro electric push rod (52) drives the lifting seat (53) to drive the airtight valve head (54) to move downward, and the air bag (55) is inserted into the inner cavity of the rivet nut, the air pump (48) makes the air bag (55) expand in the inner cavity of the rivet nut to fix the rivet nut, so as to realize the stable butt joint of the rivet nut in the subsequent installation process; Step four: the first lifting module (47) drives the rivet moving assembly (5) to move downward, and the rivet moving assembly (5) pushes the rivet nut to be inserted into the inner cavity of the workpiece from the inside of the clamping groove seat (46), so as to complete the installation of the rivet; Step five: the second electric push rod (64) drives the deformation limiting assembly (8) to be inserted into the mold inside and located below the rivet nut, so that the bottom of the rivet nut is expanded and deformed to be located inside the limiting seat (84), the second lifting module (63) is elongated to drive the continuous stamping assembly (7) to move above the rivet nut position of the workpiece, and waits for stamping processing; Step six: the micro motor (75) drives the eccentric wheel (78) to eccentrically rotate inside the moving seat (77), so that the eccentric wheel (78) reciprocates under the rotation force of the moving seat (77) and the limiting action of the insertion groove seat (76), and the moving seat (77) drives the top plate (74) to reciprocate upward and downward under the limiting action of the limiting spring rod (73); Step seven: the top plate (74) drives the mounting seat (79) to drive the connecting frame (712) to drive the pressing head (713) to move downward to press the rivet nut in the riveting workpiece under the cooperation of the first connecting rod (710) and the connecting seat (711); Step eight: while the rivet nut is deformed in the riveting workpiece, the screw lifting module (86) drives the moving end to move downward, and drives the limiting seat (84) under the cooperation of the second connecting rod (87); under the limiting action of the limiting sliding groove top seat (85) and the limiting sliding groove bottom seat (83), it moves outward synchronously with the expansion of the rivet nut, so as to limit the rivet nut in the deformation process.

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