Bottom shell riveting production line

Abstract

The present invention discloses a bottom shell riveting production line, comprising a feeding machine, a plurality of riveting workstations arranged in series, and a discharging machine. The internal thread diameters of the rivet nuts supplied by at least some of the riveting workstations are different. Each riveting workstation comprises a riveting machine, two riveting assemblies arranged above the riveting machine, and the two riveting assemblies are driven by three-axis driving modules respectively. Each riveting assembly comprises a riveting gun, a CCD visual camera, and a feeding group arranged on at least one side of the riveting gun. The internal thread diameters of the rivet nuts supplied by more than two feeding groups are the same but the models are different. Each feeding group comprises a two-axis moving module, a pair of clamping claws, a feeding pipe, and a vibration plate. The vibration plate feeds the upper feeding pipe through a blowing assembly. Any two-axis moving module can drive the clamping claw to move the rivet nut at the lower end of the feeding pipe to dock with the lower end riveting rod of the riveting gun. The present invention can improve riveting efficiency and reduce riveting costs.

Description

Technical Field

[0001] The invention relates to bottom shell processing equipment, in particular to a bottom shell riveting production line. Background Art

[0002] For electronic bottom shells, different types of rivet nuts need to be riveted at different locations. For example, an electronic bottom shell needs to be equipped with more than three different specifications of rivet nuts. Depending on the shape of the electronic bottom shell, the number of rivet nuts of more than three specifications is different, and the number is relatively large. At present, a rivet gun only rivets rivets one specification of rivet nut material. It is necessary to complete all the rivet nuts of the first specification on a rivet device, and then move it to the second rivet device to rivet the rivet nuts of the second specification, until more than three rivet nuts are all riveted to form the required bottom shell product. This method requires transportation between different rivet devices, resulting in low rivet efficiency for a single electronic bottom shell; and a rivet gun can only provide one type of rivet nut, resulting in more rivet equipment required and higher costs. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide a bottom shell riveting production line that takes into account riveting efficiency and reduces riveting processing costs.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a bottom shell rivet production line, including a feeder, a rivet workstation, and a discharging machine distributed in the X-axis direction, wherein the rivet workstations are provided in plurality and are arranged in series, and the internal thread diameters of the rivet nuts supplied by at least some of the rivet workstations are different, and each of the rivet workstations includes a riveting machine, two rivet assemblies arranged above the riveting machine, and the two rivet assemblies are driven by three-axis drive modules respectively, and each of the rivet assemblies includes a rivet gun, a CCD visual camera, and a feeding group arranged on at least one side of the rivet gun, and when the feeding group is More than two, the internal thread diameters of the rivet nuts supplied by more than two feeding groups are the same but different models, each feeding group includes a two-axis moving module, a pair of clamping claws, a feeding pipe and a vibration plate, the vibration plate feeds the feeding pipe through a blowing assembly, the pair of clamping claws are located below the lower end of the feeding pipe, the two-axis moving module drives the clamping claws to rise and fall and translate, any one of the two-axis moving modules can drive the corresponding pair of clamping claws to move the rivet nut at the lower end of the feeding pipe to a state where it is docked with the lower end rivet rod of the rivet gun, and the CCD visual camera is fixed on the feeding group.

[0005] Preferably, each of the two-axis moving modules includes a first lifting cylinder, a clamping cylinder, and a translation cylinder driving the first lifting cylinder to translate. The clamping cylinder is horizontally arranged and driven to lift by the first lifting cylinder. The pair of clamping claws are installed on the clamping claw cylinder; the pair of clamping claws includes two clamping claws, and the facing ends of the two clamping claws are provided with a plurality of longitudinal protrusions. An upper support platform is fixed to the upper end surface of the cylinder body of the clamping claw cylinder, and a conical support hole is opened on the upper support platform. A lower support platform is fixed to the lower end surface of the cylinder body of the clamping claw cylinder, and a support groove is provided on the lower support platform. The conical support hole and the support groove are used to support the upper and lower ends of the rivet nut clamped in the pair of clamping claws, and a shooting sensor is provided between the two clamping claws.

[0006] Preferably, each of the rivet assemblies further comprises: a photoelectric sensor for detecting whether the rivet rod at the lower end of the rivet gun is broken or whether there is a rivet nut on the rivet rod; a laser displacement sensor for detecting the height of the rivet nut after riveting, and then determining whether there is a gap between the rivet nut and the surface of the bottom shell workpiece.

[0007] Preferably, the feeding machine, riveting machine and discharging machine all adopt two groups of roller lines; a riveting lifting frame is arranged between the two groups of roller lines of the riveting machine, and a plurality of riveting support frames are arranged on the upper end surface of the riveting lifting frame, and the riveting lifting frame is driven by a riveting lifting cylinder to switch back and forth between a state higher or lower than the two groups of roller lines of the riveting machine; a discharging lifting frame is arranged between the two groups of roller lines of the discharging machine, and a plurality of discharging support frames are arranged on the upper end surface of the discharging lifting frame, and the discharging lifting frame is driven by a discharging lifting cylinder to switch back and forth between a state higher or lower than the two groups of roller lines of the discharging machine.

[0008] Preferably, the riveting machine is provided with riveting side positioning components located on both sides of the travel track of the bottom shell workpiece, and each of the riveting side positioning components includes: a riveting translation frame, which is slidably set on the riveting machine through multiple sets of guide rails; multiple sets of first riveting unpowered roller groups vertically arranged on the riveting translation frame, and the rollers of each set of the first riveting unpowered roller groups can rotate around their own central axes; at least one first riveting drive cylinder, which is fixedly set on the riveting machine, and the telescopic shaft of the first riveting drive cylinder is connected and fixed to the riveting translation frame to drive multiple sets of the first riveting unpowered roller groups to move toward or away from the bottom shell workpiece on the riveting machine; multiple riveting pressing parts are arranged on the riveting translation frame, which are driven to rise and fall and rotate by the riveting rotating cylinders respectively, and then position the upper surface of the bottom shell workpiece.

[0009] Preferably, the riveting machine is provided with end positioning components located at the front and rear ends of the path of the bottom shell workpiece, and each of the end positioning components includes: a riveting translation plate, which is slidably arranged on the riveting machine through multiple sets of guide rails; a second riveting drive cylinder, which is fixedly arranged on the riveting machine, and the telescopic shaft of the second riveting drive cylinder is connected and fixed to the riveting translation plate to drive the riveting translation plate to move toward or away from the riveting machine; a linkage shaft, which is rotatably arranged on the riveting translation plate; a plurality of second riveted unpowered rollers, which are fixed on the linkage shaft, and the plurality of second riveted unpowered rollers can rotate around their own central axes; a linkage cylinder, whose tail is rotatably connected to the riveting translation plate, and the end of the telescopic shaft of the linkage cylinder is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the linkage shaft; the linkage cylinder can drive the linkage shaft to rotate 90°, thereby forcing the plurality of second riveted unpowered rollers to switch back and forth between a vertical state and a horizontal state.

[0010] Preferably, the three-axis drive module includes: a servo motor fixed on the riveting machine; two transmission shafts in the Y-axis direction, both of which are rotatably arranged on the riveting machine, the servo motor is connected to the ends of the two transmission shafts facing each other through a first commutator, driving the two transmission shafts to rotate around their own central axes, and multiple groups of support guide wheels are arranged on the riveting machine, each group of support guide wheels includes two support guide wheels, and the two support guide wheels are respectively tangent to the transmission shafts; two lead screws in the X-axis direction, the opposite ends of the two transmission shafts are respectively connected to one end of the two lead screws through a second commutator, driving the two lead screws to rotate around their own central axes; two sliders are respectively slidably arranged on the riveting machine and respectively matched with the two lead screw threads; a gantry, with both ends fixed on the two sliders; a Y-axis linear module fixed on the gantry; a Z-axis drive module installed on the Y-axis linear module, and the rivet assembly is fixed on the Z-axis drive module.

[0011] Preferably, the discharging platform is provided with discharging side positioning components located on both sides of the travel trajectory of the bottom shell workpiece, and each discharging side positioning component includes: a discharging translation frame, which is slidably arranged on the discharging platform through multiple sets of guide rails; multiple sets of first discharging unpowered roller groups vertically arranged on the discharging translation frame, and the rollers of each set of the first discharging unpowered roller groups can rotate around their own central axes; at least one first discharging driving cylinder is fixedly arranged on the discharging platform, and the telescopic shaft of the first discharging driving cylinder is connected and fixed to the discharging translation frame to drive multiple sets of the first discharging unpowered roller groups to move toward or away from the bottom shell workpiece on the discharging platform; multiple discharging clamping members are arranged on the discharging translation frame, and are driven to lift and rotate by the discharging rotating cylinder respectively, so as to position the upper surface of the bottom shell workpiece.

[0012] Preferably, the discharging machine platform is provided with a front positioning component and a rear moving positioning component located at the front and rear ends of the path track of the bottom shell workpiece; the front positioning component includes a plurality of groups of second discharging unpowered roller groups vertically arranged at the discharging end of the discharging machine platform, and the rollers of each group of the second discharging unpowered roller groups can rotate around their own central axes; the rear moving positioning component includes: a discharging translation plate, which is slidably arranged at the feeding end of the discharging machine platform; a second discharging driving cylinder, which is fixed on the discharging machine platform, and drives the discharging translation plate to move back and forth in the direction of approaching or moving away from the second discharging unpowered roller group; a lifting plate, which is slidably arranged on the front side of the discharging translation plate; a third discharging unpowered roller group, which is vertically arranged on the front side of the lifting plate, and the rollers of each group of the third discharging unpowered roller group can rotate around its own central axis; a second lifting cylinder, which is fixed on the discharging translation plate, drives the lifting plate to rise and fall, and then forces the third discharging unpowered roller group to descend below the bottom shell workpiece or rise to one side of the bottom shell workpiece.

[0013] Preferably, a plurality of precision positioning components are also provided on the discharging machine platform, and each of the precision positioning components comprises: a positioning pin, which matches the positioning hole at the bottom of the bottom shell workpiece; a precision positioning lifting cylinder, which is fixedly installed on the discharging machine platform, and drives the positioning pin to be inserted into the positioning hole.

[0014] The bottom shell riveting production line of the present invention has the following beneficial effects:

[0015] First, by connecting multiple riveting workstations in series, the transportation process is eliminated. The bottom shell workpiece riveted by the previous riveting workstation directly enters the next riveting workstation, which reduces the transportation time and improves the riveting processing efficiency.

[0016] Secondly, the internal thread diameters of the rivet nuts of at least some of the rivet workstations are different, so that the rivet nuts of at least some of the rivet workstations are of different types, and then different types of rivet nuts can be riveted on one line, further improving the processing efficiency of rivets;

[0017] Third, one riveting machine is equipped with two riveting assemblies, which improves the riveting efficiency of a single riveting workstation;

[0018] Fourthly, the feeding group is arranged on at least one side of the rivet gun. One rivet gun is equipped with at least one feeding group. Multiple feeding groups can supply rivet nuts with the same internal thread diameter but different models to the rivet gun, thereby reducing equipment investment and lowering production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view of this embodiment;

[0020] Figure 2This is a three-dimensional diagram of the riveting workstation of this embodiment;

[0021] Figure 3 A three-dimensional view of the rivet assembly of this embodiment at a first angle;

[0022] Figure 4 A three-dimensional view of the rivet assembly of this embodiment at a second angle;

[0023] Figure 5 It is a partial three-dimensional diagram of the feeding group of this embodiment;

[0024] Figure 6 for Figure 5 Exploded diagram of

[0025] Figure 7 It is a partial three-dimensional diagram of the riveting workstation of this embodiment;

[0026] Figure 8 It is a three-dimensional diagram of the riveted jacking frame of this embodiment;

[0027] Fig. 9 It is a three-dimensional diagram of the riveting side positioning components on both sides of this embodiment;

[0028] Fig.10 is a three-dimensional diagram of the end positioning components at both ends of this embodiment;

[0029] Fig.11 An exploded view of the cooperation between the linkage shaft and the connecting rod in this embodiment;

[0030] Fig.12 This is a three-dimensional diagram of the discharging machine of this embodiment;

[0031] Fig.13 This is a three-dimensional diagram of the discharge lifting frame of this embodiment;

[0032] Fig.14 is a three-dimensional diagram of the rear mobile positioning assembly of this embodiment;

[0033] Fig.15 It is a partial stereoscopic view of the discharging machine of this embodiment.

[0034] In the attached drawings: 100, feeding machine; 200, riveting workstation; 210, riveting machine; 220, riveting assembly; 221, riveting gun; 221a, riveting rod; 222, CCD visual camera; 223, feeding group; 223a, clamping claw; 223b, feeding pipe; 223c, first lifting cylinder; 223d, translation cylinder; 223e, clamping claw cylinder; 223f, longitudinal protrusion; 223g, upper support platform; 223h, conical support hole; 223i, lower support platform; 223j, support groove; 223k, vibration plate; 223m, through-beam sensor; 224, photoelectric sensor; 225, laser displacement sensor; 230, three-axis drive module; 231, servo motor; 232, transmission shaft; 232a, support guide wheel; 233, first commutator; 234, Z-axis drive module; 235, lead screw; 236, second commutator; 237, slider; 238, gantry; 239, Y-axis linear module; 240, riveted lifting frame; 241, riveted support frame; 242, riveted lifting cylinder; 250, riveted side positioning assembly; 251, riveted translation frame ; 252, first riveted unpowered roller group; 253, first riveted driving cylinder; 254, riveted rotating cylinder; 255, riveted pressing piece; 260, end positioning assembly; 261, riveted translation plate; 262, second riveted driving cylinder; 263, linkage shaft; 264, second riveted unpowered roller; 265, linkage cylinder; 266, connecting rod; 267, rectangular slot; 268, rectangular connecting slot; 300, discharging machine; 310, discharging lifting frame; 311, discharging support frame; 312, discharging lifting cylinder; 320, discharging Side positioning assembly; 321, discharging translation frame; 322, first discharging non-powered roller group; 323, first discharging driving cylinder; 324, discharging rotating cylinder; 330, rear moving positioning assembly; 331, discharging translation plate; 332, second discharging driving cylinder; 333, lifting plate; 334, third discharging non-powered roller group; 335, second lifting cylinder; 340, front positioning assembly; 341, second discharging non-powered roller group; 350, precision positioning assembly; 351, positioning pin; 352, precision positioning lifting cylinder; 400, bottom shell workpiece. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0036] See also Figure 1As shown, this embodiment discloses a bottom shell rivet production line, including a feeder 100, a rivet workstation 200, and a discharging machine 300 distributed in the X-axis direction. There are four rivet workstations 200, which are arranged in series. The internal thread diameters of the rivet nuts provided by three of the rivet workstations 200 are different, and the type of the rivet nuts provided by the remaining rivet workstation 200 is completely consistent with that of one of the rivet workstations 200. Figure 2 As shown, each rivet workstation 200 includes a riveting machine 210, two rivet assemblies 220 arranged above the riveting machine 210, and the two rivet assemblies 220 are driven by a three-axis drive module 230 respectively. Each rivet assembly 220 includes a rivet gun 221, a CCD visual camera 222, and a feeding group 223 arranged on at least one side of the rivet gun 221. When there are more than two feeding groups 223, the rivet nuts provided by the more than two feeding groups 223 have the same internal thread diameter and different models. The different models in this embodiment refer to: the total length, cap diameter, cap thickness and other parameters of the rivet nut are different. For example, two M6 rivet nuts can be provided, but the total length, cap diameter and cap thickness of the two M6 rivet nuts are different.

[0037] like Figure 2 , Figure 3 As shown, each feeding group 223 includes a two-axis moving module, a pair of clamping claws 223a, a feeding pipe 223b and a vibration plate 223k. The vibration plate 223k feeds the feeding pipe 223b through a blowing assembly. The pair of clamping claws 223a are located below the lower end of the feeding pipe 223b. The two-axis moving module drives the clamping claws 223a to rise and fall and translate. Any two-axis moving module can drive the corresponding pair of clamping claws 223a to move the rivet nut at the lower end of the feeding pipe 223b to a state where it is docked with the rivet rod 221a at the lower end of the rivet gun 221. The CCD visual camera 222 is fixed on the feeding group 223.

[0038] like Figure 3 , Figure 4 As shown, each two-axis moving module includes a first lifting cylinder 223c, a clamping cylinder 223e, and a translation cylinder 223d that drives the first lifting cylinder 223c to translate. The clamping cylinder 223e is horizontally arranged and driven to move up and down by the first lifting cylinder 223c. A pair of clamping claws 223a are installed on the clamping cylinder 223e.

[0039] like Figure 5 , Figure 6As shown, a pair of clamping claws 223a includes two clamping claws 223a, and the facing ends of the two clamping claws 223a are provided with a plurality of longitudinal protrusions 223f, an upper support platform 223g is fixed to the upper end surface of the cylinder body of the clamping claw cylinder 223e, and a conical support hole 223h is opened on the upper support platform 223g, and a lower support platform 223i is fixed to the lower end surface of the cylinder body of the clamping claw cylinder 223e, and a support groove 223j is arranged on the lower support platform 223i, and the conical support hole 223h and the support groove 223j are used to support the upper and lower ends of the rivet nut clamped in the pair of clamping claws 223a, and a counter-shooting sensor 223m is arranged between the two clamping claws 223a.

[0040] like Figure 3 , Figure 4 As shown, each rivet assembly 220 further includes: a photoelectric sensor 224 for detecting whether the rivet rod at the lower end of the rivet gun 221 is broken or whether there is a rivet nut on the rivet rod; a laser displacement sensor 225. Since the bottom shell workpiece 400 after riveting will be deformed and warped, the laser displacement sensor 225 is used to detect the height of the rivet nut after riveting, and then determine whether there is a gap between the rivet nut and the surface of the bottom shell workpiece 400. The photoelectric sensor 224 is fixed on one side of the rivet gun 221, and the laser displacement sensor 225 is fixed on the bracket of the two-axis moving module.

[0041] like Figure 1 As shown, the feeder 100, the riveting machine 210, and the discharging machine 300 all use two sets of roller lines, which are connected end to end. Specifically, the two sets of roller lines of the feeder 100 are connected to the two sets of roller lines of the first riveting machine 210, the two sets of roller lines of every two adjacent riveting machines 210 are connected end to end, and the two sets of roller lines of the last riveting machine 210 are connected to the two sets of roller lines of the discharging machine 300.

[0042] like Figure 7 , Figure 8 As shown, a riveting lifting frame 240 is arranged between the two groups of roller lines of the riveting machine 210, and a plurality of riveting support frames 241 are arranged on the upper end surface of the riveting lifting frame 240. The riveting lifting frame 240 is driven by a riveting lifting cylinder 242 to switch back and forth between the states above or below the two groups of roller lines of the riveting machine 210.

[0043] like Fig.12 , Fig.13 As shown, a discharging lifting frame 310 is arranged between the two groups of roller lines of the discharging machine platform 300, and a plurality of discharging support frames 311 are arranged on the upper end surface of the discharging lifting frame 310. The discharging lifting frame 310 is driven by a discharging lifting cylinder 312 to switch back and forth between the state above or below the two groups of roller lines of the discharging machine platform 300.

[0044] The riveting machine 210 is provided with riveting side positioning components 250 located on both sides of the path of the bottom shell workpiece 400. Fig. 9 As shown, each riveting side positioning assembly 250 includes: a riveting translation frame 251, which is slidably arranged on the riveting machine 210 through multiple sets of guide rails; multiple sets of first riveting unpowered roller groups 252 are vertically arranged on the riveting translation frame 251, and the rollers of each set of first riveting unpowered roller groups 252 can rotate around their own central axes; at least one first riveting drive cylinder 253, which is fixedly arranged on the riveting machine 210, and the telescopic shaft of the first riveting drive cylinder 253 is connected and fixed to the riveting translation frame 251, so as to drive multiple sets of first riveting unpowered roller groups 252 to move toward or away from the bottom shell workpiece 400 on the riveting machine 210; multiple riveting pressing members 255, which are arranged on the riveting translation frame 251, and are driven to rise and fall and rotate by the riveting rotating cylinder 254 respectively, so as to position the upper surface of the bottom shell workpiece 400.

[0045] The riveting machine 210 is provided with an end positioning assembly 260 located at the front and rear ends of the path of the bottom shell workpiece 400. Fig.10 , Fig.11 As shown, each end positioning assembly 260 includes: a riveting translation plate 261, which is slidably arranged on the riveting machine 210 through a plurality of guide rails; a second riveting driving cylinder 262, which is fixedly arranged on the riveting machine 210, and the telescopic shaft of the second riveting driving cylinder 262 is connected and fixed to the riveting translation plate 261, so as to drive the riveting translation plate 261 to move toward or away from the riveting machine 210; a linkage shaft 263, which is rotatably arranged on the riveting translation plate 261; and a plurality of second riveting unpowered rollers 264. , fixed on the linkage shaft 263, multiple second riveted unpowered rollers 264 can rotate around their own central axes; the linkage cylinder 265, its tail is rotatably connected to the riveted translation plate 261, the end of the telescopic shaft of the linkage cylinder 265 is rotatably connected to one end of the connecting rod 266, and the other end of the connecting rod 266 is fixedly connected to the linkage shaft 263; the linkage cylinder 265 can drive the linkage shaft 263 to rotate 90°, thereby forcing the multiple second riveted unpowered rollers 264 to switch back and forth between the vertical state and the horizontal state.

[0046] like Fig.11 As shown, in addition to being fixed to the linkage shaft 263 by bolts, the other end of the connecting rod 266 is provided with a rectangular slot 267, and the linkage shaft 263 is correspondingly provided with a rectangular connecting slot 268. When connecting, the rectangular slot 267 is aligned with the rectangular connecting slot 268, and then fixed by bolts. The coordination of the rectangular slot 267 and the rectangular connecting slot 268 can improve the stability of the connection between the connecting rod 266 and the linkage shaft 263.

[0047] like Figure 2As shown, the three-axis drive module 230 includes: a servo motor 231, which is fixed on the riveting machine 210; two transmission shafts 232 in the Y-axis direction, the central axes of the two transmission shafts 232 coincide, and the two transmission shafts 232 are both rotatably arranged on the riveting machine 210, and the servo motor 231 is connected to the ends of the two transmission shafts 232 facing each other through a first commutator 233, driving the two transmission shafts 232 to rotate around their own central axes, and the riveting machine 210 is provided with multiple groups of support guide wheels 232a, each group of support guide wheels 232a includes two support guide wheels 232a, and the two support guide wheels 232a are tangent to the transmission shaft 232 respectively; two X The screw rod 235 is axially oriented, and the opposite ends of the two transmission shafts 232 are connected to one end of the two screw rods 235 through the second commutator 236, respectively, to drive the two screw rods 235 to rotate around their own central axes; the two sliders 237 are respectively slidably set on the riveting machine 210, and are respectively threadedly matched with the two screw rods 235; the gantry 238 is fixed on the two sliders 237 at both ends; the Y-axis linear module 239 is fixed on the gantry 238; the Z-axis drive module 234, the Z-axis drive module 234 can be a cylinder or a linear module, which is installed on the Y-axis linear module 239, and the rivet assembly 220 is fixed on the Z-axis drive module 234.

[0048] like Fig.15 As shown, the discharging machine platform 300 is provided with discharging side positioning components 320 located on both sides of the path of the bottom shell workpiece 400, and each discharging side positioning component 320 includes: a discharging translation frame 321, which is slidably arranged on the discharging machine platform 300 through multiple sets of guide rails; multiple sets of first discharging unpowered roller groups 322 vertically arranged on the discharging translation frame 321, and the rollers of each set of first discharging unpowered roller groups 322 can rotate around their own central axes; at least one first discharging driving cylinder 323, which is fixedly arranged on the discharging machine platform 300, and the telescopic shaft of the first discharging driving cylinder 323 is connected and fixed to the discharging translation frame 321, so as to drive multiple sets of first discharging unpowered roller groups 322 to move toward or away from the bottom shell workpiece 400 on the discharging machine platform 300; multiple discharging clamping members, which are arranged on the discharging translation frame 321, are driven to lift and rotate by the discharging rotating cylinder 324, and then position the upper surface of the bottom shell workpiece 400.

[0049] like Fig.15 As shown, the discharging machine 300 is provided with a front positioning assembly 340 and a rear moving positioning assembly 330 located at the front and rear ends of the path of the bottom shell workpiece 400;

[0050] The front positioning assembly 340 includes a plurality of groups of second unpowered discharging roller groups 341 vertically arranged at the discharging end of the discharging machine 300, and the rollers of each group of second unpowered discharging roller groups 341 can rotate around their own central axis;

[0051] like Fig.14 As shown, the rear moving positioning assembly 330 includes: a discharging translation plate 331, which is slidably arranged at the feeding end of the discharging machine platform 300; a second discharging driving cylinder 332, which is fixed on the discharging machine platform 300, and drives the discharging translation plate 331 to move back and forth in the direction close to or away from the second discharging unpowered roller group 341; a lifting plate 333, which is slidably arranged on the front side of the discharging translation plate 331; a third discharging unpowered roller group 334, which is vertically arranged on the front side of the lifting plate 333, and the rollers of each group of the third discharging unpowered roller group 334 can rotate around their own central axis; a second lifting cylinder 335, which is fixed on the discharging translation plate 331, drives the lifting plate 333 to rise and fall, and then forces the third discharging unpowered roller group 334 to descend below the bottom shell workpiece 400 or rise to one side of the bottom shell workpiece 400.

[0052] like Fig.15 As shown, the discharging machine 300 is also provided with a plurality of precision positioning components 350. In this embodiment, two precision positioning components 350 are provided, which are respectively located at the front and rear ends of the discharging machine 300. Each precision positioning component 350 includes: a positioning pin 351, which matches the positioning hole at the bottom of the bottom shell workpiece 400; a precision positioning lifting cylinder 352, which is fixedly installed on the discharging machine 300, and the telescopic shaft end of the precision positioning lifting cylinder 352 is connected and fixed with the positioning pin 351, and drives the positioning pin 351 to insert into the positioning hole.

[0053] The working principle of this embodiment is:

[0054] The two sets of roller lines of the feeder 100 transport the bottom shell workpiece 400 to the first riveting workstation 200. The first riveting workstation 200 has two riveting assemblies 220. Each riveting assembly 220 is equipped with two feeding groups 223. The two feeding groups 223 supply two types of rivet nuts with the same internal thread diameter and different models to the riveting gun 221. When the two sets of roller lines of the riveting machine 210 receive the bottom shell workpiece 400, the second riveting unpowered roller 264 of the end positioning assembly 260 is in a horizontal state, lower than the two sets of roller lines of the riveting machine 210, so as to ensure that the bottom shell workpiece 400 can enter the riveting machine 210. After the two sets of roller lines of the riveting machine 210 transfer the bottom shell workpiece 400 to the top of the riveting lifting frame 240, the riveting lifting cylinder 242 drives the riveting support frame 241 to lift it above the two sets of roller lines of the riveting machine 210. The first riveting drive cylinders 253 of the two riveting side positioning assemblies 250 respectively drive the first riveting unpowered roller group 252 to move to both sides of the bottom shell workpiece 400 to achieve side positioning. While side positioning, the end positioning assemblies 260 at both ends act synchronously, and the second riveting drive cylinder 262 of each end positioning assembly 260 drives the second riveting unpowered roller 264 to move to both ends of the bottom shell workpiece 400. At the same time, the linkage cylinder 265 drives the linkage shaft 263 to rotate until the linkage shaft 263 drives the second riveting unpowered roller 264 to rotate to a vertical state. At this time, the second riveting unpowered roller 264 is pressed against the end of the bottom shell workpiece 400. Then, the riveting rotating cylinder 254 drives the riveting pressing member 255 to rotate to the top of the bottom shell workpiece 400 first, and then shrinks, and the riveting pressing member 255 presses the upper surface of the bottom shell workpiece 400. The bottom shell workpiece 400 is positioned by positioning on both sides, both ends and the upper end surface, and then the bottom shell workpiece 400 is riveted synchronously by two rivet assemblies 220. Each rivet assemblies 220 is driven by a three-axis driving module 230, one rivet assembly 220 is located above the front half of the bottom shell workpiece 400, responsible for the rivet holes of this part, and the other rivet assembly 220 is located above the back half of the bottom shell workpiece 400, responsible for the rivet holes of this part, and the two rivet assemblies 220 work synchronously.

[0055] The vibration plate 223k of the first feeding group 223 supplies type A of the first rivet nut to the corresponding feeding pipe 223b, and the vibration plate 223k of the second feeding group 223 supplies type B of the first rivet nut to the corresponding feeding pipe 223b. Since type A of the first rivet nut and type B of the first rivet nut share a rivet rod 221a, the internal thread diameters of the two are the same, but the models are different. When each rivet assembly 220 is working, the CCD visual camera 222 first captures the position of the first rivet hole, and the three-axis driving module 230 drives the rivet gun 221 of the rivet assembly 220 to move above the first rivet hole, and the No. 1 rivet nut A is moved to the lower end of the first feeding pipe 223b. At this time, a pair of clamping claws 223a are in an open state, and the No. 1 rivet nut A falls into the conical support hole 223h and the support groove 223j below. The clamping claw cylinder 223e drives a pair of clamping claws 223a to clamp the No. 1 rivet nut A positioned by the conical support hole 223h and the support groove 223j, and the two-axis moving module drives the No. 1 rivet nut A to the lower end of the rivet gun 221, and The rivet rod 221a is docked, and after the rivet rod 221a completes the material collection of the No. 1 rivet nut type A, the clamping claw cylinder 223e drives a pair of clamping claws 223a to loosen the No. 1 rivet nut type A, and the two-axis moving module drives a pair of clamping claws 223a to move downward until the conical support hole 223h is disengaged from the No. 1 rivet nut type A, and then resets to the bottom of the feeding pipe 223b. At this time, the riveting operation of one No. 1 rivet nut type A is completed, and this cycle is repeated until the number of No. 1 rivet nuts type A corresponding to the rivet assembly 220 are all riveted, and then the second feeding group 223 operates, and the working principle is the same as the first feeding group 223, until the number of No. 1 rivet nuts type B corresponding to the rivet assembly 220 are all riveted. Next, the riveting side positioning assembly 250 and the end positioning assembly 260 of the first riveting workstation 200 are reset, and the bottom shell workpiece 400 is released. At the same time, the riveting lifting cylinder 242 drives the riveting support frame 241 to descend to below the two sets of roller lines of the riveting machine 210, and the two sets of roller lines of the first riveting workstation 200 transfer the bottom shell workpiece 400 to the second riveting workstation 200.

[0056] The operating principle of the second riveting workstation 200 is basically the same as that of the first riveting workstation 200. The difference from the first riveting workstation 200 is that a rivet gun 221 is equipped with a feeding group 223, that is, if the number of rivet nuts No. 1 A type required for riveting is too large, the feeding group 223 of the second riveting workstation 200 continues to supply rivet nuts No. 1 A type, or other types of No. 2 rivet nuts. The internal thread diameter and model of the No. 2 rivet nut and the No. 1 rivet nut are different. After the riveting of the No. 1 rivet nut A type or the No. 2 rivet nut is completed, it is transferred to the third riveting workstation 200 by the two groups of roller lines of the second riveting workstation 200.

[0057] The third rivet workstation 200 has the same operating principle as the first rivet workstation 200, and also has a rivet gun 221 with two feeding groups 223. The difference from the first rivet workstation 200 is that each rivet gun 221 feeds the bottom shell workpiece 400 with No. 3 rivet nut type A and No. 3 rivet nut type B, which have the same internal thread diameter but different models. After the rivet of No. 3 rivet nut type A and No. 3 rivet nut type B is completed, the two roller lines of the third rivet workstation 200 transfer the bottom shell workpiece 400 to the fourth rivet workstation 200.

[0058] The fourth rivet workstation 200 has the same operating principle as the second rivet workstation 200, and also has a rivet gun 221 with a feeding group 223. The difference is that the rivet nuts fed can be the excessive number of No. 3 rivet nuts A or No. 3 rivet nuts B, or No. 4 rivet nuts. The internal thread diameter and model of No. 4 rivet nuts are different from those of No. 3 rivet nuts. After the rivet nuts of the rivet workstation 200 are riveted, the two roller lines of the fourth rivet workstation 200 transfer the bottom shell workpiece 400 to the unloading machine 300.

[0059] When the two groups of roller lines of the discharging machine platform 300 receive the bottom shell workpiece 400, the second lifting cylinder 335 of the rear moving positioning assembly 330 drives the third discharging unpowered roller group 334 to descend to below the bottom shell workpiece 400, so that the bottom shell workpiece 400 can be transferred to the two groups of roller lines of the discharging machine platform 300. When the bottom shell workpiece 400 is transferred to the top of the discharging lifting frame 310, the discharging lifting cylinder 312 drives the discharging support frame 311 to rise and lift the bottom shell workpiece 400; at this time, the second lifting cylinder 335 of the rear moving positioning assembly 330 drives the third discharging unpowered roller group 334 to rise until it is located on one side of the lifted bottom shell workpiece 400; then, the second discharging driving cylinder 332 drives the third discharging unpowered roller group 334 to the second discharging unpowered roller group The cylinder group 341 moves in the direction of the bottom shell workpiece 400, and the bottom shell workpiece 400 is moved toward the second unpowered discharge roller group 341 at the tail; at the same time, the first discharge driving cylinder 323 of the discharge side positioning assembly 320 on both sides drives the first unpowered discharge roller group 322 to move to both sides of the bottom shell workpiece 400 until the bottom shell workpiece 400 is clamped and positioned; then, the discharge rotating cylinder 324 drives the discharge clamping piece to press on the upper surface of both sides of the positioned bottom shell workpiece 400; then the fine positioning lifting cylinder 352 drives the positioning pin 351 to push up and insert it into the positioning hole at the bottom of the positioned bottom shell workpiece 400 for fine positioning, waiting to be grabbed by the robot; after the bottom shell workpiece 400 is grabbed, the rear moving positioning assembly 330, the discharge lifting frame 310, the discharge side positioning assembly 320, and the fine positioning assembly 350 are reset.

[0060] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A bottom shell riveting production line, comprising a feeding machine (100), a riveting workstation (200), and a discharging machine (300) distributed in an X-axis direction, characterized in that: The rivet workstations (200) are provided in plurality and are arranged in series. The internal thread diameters of the rivet nuts provided by at least some of the rivet workstations (200) are different. Each of the rivet workstations (200) comprises a riveting machine (210), two rivet assemblies (220) arranged above the riveting machine (210), the two rivet assemblies (220) being driven by a three-axis driving module (230) respectively. Each of the rivet assemblies (220) comprises a rivet gun (221), a CCD visual camera (222), and a feeding group (223) arranged on at least one side of the rivet gun (221). When there are more than two feeding groups (223), the internal thread diameters of the rivet nuts provided by the more than two feeding groups (223) are the same and the models are different. Each of the feeding groups (223) comprises a two-axis moving module, a pair of clamping claws (223a), a feeding pipe (223b) and a vibration plate (223k), wherein the vibration plate (223k) feeds the feeding pipe (223b) through a blowing assembly, the pair of clamping claws (223a) are located below the lower end of the feeding pipe (223b), the two-axis moving module drives the clamping claws (223a) to rise and fall and translate, and any one of the two-axis moving modules can drive the corresponding pair of clamping claws (223a) to move the rivet nut at the lower end of the feeding pipe (223b) to a state where it is docked with the lower end rivet rod (221a) of the rivet gun (221), and the CCD visual camera (222) is fixed on the feeding group (223); The riveting machine (210) is provided with riveting side positioning components (250) located on both sides of the path of the bottom shell workpiece (400), and each of the riveting side positioning components (250) comprises: A riveting translation frame (251) is slidably arranged on the riveting machine table (210) via a plurality of guide rails; A plurality of first riveted unpowered roller groups (252) vertically arranged on the riveted translation frame (251), wherein the rollers of each first riveted unpowered roller group (252) can rotate around their own central axes; At least one first riveting drive cylinder (253) is fixedly arranged on the riveting machine (210), and the telescopic shaft of the first riveting drive cylinder (253) is connected and fixed to the riveting translation frame (251) to drive the plurality of first riveting unpowered roller groups (252) to move towards or away from the bottom shell workpiece (400) on the riveting machine (210); A plurality of riveting pressing members (255) are arranged on the riveting translation frame (251), and are respectively driven by the riveting rotating cylinder (254) to rise and fall and rotate, thereby positioning the upper surface of the bottom shell workpiece (400).

2. The bottom shell riveting production line according to claim 1 is characterized in that: Each of the two-axis moving modules comprises a first lifting cylinder (223c), a clamping claw cylinder (223e), and a translation cylinder (223d) for driving the first lifting cylinder (223c) to translate; the clamping claw cylinder (223e) is arranged horizontally and is driven to move up and down by the first lifting cylinder (223c); and the pair of clamping claws (223a) are mounted on the clamping claw cylinder (223e); A pair of the clamping claws (223a) comprises two clamping claws (223a), and the facing ends of the two clamping claws (223a) are provided with a plurality of longitudinal protrusions (223f); an upper support platform (223g) is fixed to the upper end surface of the cylinder body of the clamping claw cylinder (223e), and a conical support hole (223h) is provided on the upper support platform (223g); a lower support platform (223i) is fixed to the lower end surface of the cylinder body of the clamping claw cylinder (223e), and a support groove (223j) is provided on the lower support platform (223i); the conical support hole (223h) and the support groove (223j) are used to support the upper and lower ends of the rivet nut clamped in the pair of clamping claws (223a); and a counter-shooting sensor (223m) is provided between the two clamping claws (223a).

3. The bottom shell riveting production line according to claim 1 is characterized in that: Each of the pull rivet assemblies (220) further comprises: A photoelectric sensor (224) is used to detect whether the rivet rod at the lower end of the rivet gun (221) is broken or whether there is a rivet nut on the rivet rod; The laser displacement sensor (225) is used to detect the height of the rivet nut after riveting, and then determine whether there is a gap between the rivet nut and the surface of the bottom shell workpiece (400).

4. The bottom shell riveting production line according to claim 1 is characterized in that: The feeding machine (100), the riveting machine (210), and the discharging machine (300) all use two sets of roller lines; A riveting lifting frame (240) is arranged between the two groups of roller lines of the riveting machine (210), a plurality of riveting support frames (241) are arranged on the upper end surface of the riveting lifting frame (240), and the riveting lifting frame (240) is driven by a riveting lifting cylinder (242) to switch back and forth between a state above or below the two groups of roller lines of the riveting machine (210); A discharge lifting frame (310) is arranged between the two groups of roller lines of the discharge machine platform (300), and a plurality of discharge support frames (311) are arranged on the upper end surface of the discharge lifting frame (310). The discharge lifting frame (310) is driven by a discharge lifting cylinder (312) to switch back and forth between a state above or below the two groups of roller lines of the discharge machine platform (300).

5. The bottom shell riveting production line according to claim 1 is characterized in that: The riveting machine (210) is provided with end positioning components (260) located at the front and rear ends of the path of the bottom shell workpiece (400), and each of the end positioning components (260) comprises: A riveting translation plate (261) is slidably arranged on the riveting machine platform (210) via a plurality of guide rails; A second riveting drive cylinder (262) is fixedly arranged on the riveting machine (210), wherein the telescopic shaft of the second riveting drive cylinder (262) is connected and fixedly connected to the riveting translation plate (261) so as to drive the riveting translation plate (261) to move towards or away from the riveting machine (210); A linkage shaft (263) rotatably disposed on the riveted translation plate (261); A plurality of second riveted unpowered rollers (264) are fixed on the linkage shaft (263), and the plurality of second riveted unpowered rollers (264) are all capable of rotating around their own central axes; A linkage cylinder (265), the tail of which is rotatably connected to the riveted translation plate (261), the end of the telescopic shaft of the linkage cylinder (265) is rotatably connected to one end of a connecting rod (266), and the other end of the connecting rod (266) is fixedly connected to the linkage shaft (263); The linkage cylinder (265) can drive the linkage shaft (263) to rotate 90°, thereby forcing the plurality of second riveted unpowered rollers (264) to switch back and forth between a vertical state and a horizontal state.

6. The bottom shell riveting production line according to claim 1 is characterized in that: The three-axis driving module (230) comprises: A servo motor (231) fixed on the riveting machine (210); Two transmission shafts (232) extending in a Y-axis direction, the two transmission shafts (232) are both rotatably arranged on the riveting machine (210), the servo motor (231) is connected to the ends of the two transmission shafts (232) facing each other via a first commutator (233), and drives the two transmission shafts (232) to rotate around their own central axes, and the riveting machine (210) is provided with a plurality of groups of support guide wheels (232a), each group of support guide wheels (232a) includes two support guide wheels (232a), and the two support guide wheels (232a) are respectively tangent to the transmission shafts (232); Two screw rods (235) running in the X-axis direction, the opposite ends of the two transmission shafts (232) are respectively connected to one end of the two screw rods (235) through a second commutator (236), driving the two screw rods (235) to rotate around their own central axes; Two sliding blocks (237) are respectively slidably disposed on the riveting machine (210) and are respectively threadably engaged with the two screw rods (235); A gantry (238), both ends of which are fixed on the two slide blocks (237); A Y-axis linear module (239) fixed on the gantry (238); The Z-axis driving module (234) is mounted on the Y-axis linear module (239), and the rivet assembly (220) is fixed on the Z-axis driving module (234).

7. The bottom shell riveting production line according to claim 1 is characterized in that: The discharging machine platform (300) is provided with discharging side positioning components (320) located on both sides of the path of the bottom shell workpiece (400), and each discharging side positioning component (320) comprises: A discharging translation frame (321) is slidably arranged on the discharging machine platform (300) via a plurality of guide rails; A plurality of groups of first material discharging unpowered roller groups (322) vertically arranged on the material discharging translation frame (321), wherein the rollers of each group of the first material discharging unpowered roller groups (322) can rotate around their own central axes; At least one first discharging drive cylinder (323) is fixedly arranged on the discharging platform (300), and the telescopic shaft of the first discharging drive cylinder (323) is connected and fixed to the discharging translation frame (321) to drive multiple groups of the first discharging unpowered roller groups (322) to move towards or away from the bottom shell workpiece (400) on the discharging platform (300); A plurality of discharge pressing members are arranged on the discharge translation frame (321), and are driven to rise and fall and rotate by the discharge rotating cylinder (324) respectively, thereby positioning the upper surface of the bottom shell workpiece (400).

8. The bottom shell riveting production line according to claim 1 is characterized in that: The discharging machine platform (300) is provided with a front positioning component (340) and a rear moving positioning component (330) located at the front and rear ends of the path of the bottom shell workpiece (400); The front positioning assembly (340) comprises a plurality of groups of second unpowered discharge roller groups (341) vertically arranged at the discharge end of the discharge machine (300), and the rollers of each group of the second unpowered discharge roller groups (341) can rotate around their own central axes; The rear movement positioning assembly (330) comprises: A discharging translation plate (331) is slidably arranged at the feeding end of the discharging machine platform (300); A second discharge driving cylinder (332) is fixed on the discharge machine platform (300) and drives the discharge translation plate (331) to move back and forth in a direction close to or away from the second discharge unpowered roller group (341); A lifting plate (333) is slidably arranged on the front side of the discharging translation plate (331); A third unpowered discharge roller group (334) is vertically arranged on the front side of the lifting plate (333), and each roller of the third unpowered discharge roller group (334) can rotate around its own central axis; The second lifting cylinder (335) is fixed on the discharge translation plate (331) and drives the lifting plate (333) to rise and fall, thereby forcing the third discharge unpowered roller group (334) to descend to below the bottom shell workpiece (400) or to rise to one side of the bottom shell workpiece (400).

9. The bottom shell riveting production line according to claim 7, characterized in that: The discharging machine (300) is further provided with a plurality of precision positioning components (350), each of the precision positioning components (350) comprising: A positioning pin (351), wherein the positioning pin (351) matches a positioning hole at the bottom of the bottom shell workpiece (400); A precision positioning lifting cylinder (352), wherein the precision positioning lifting cylinder (352) is fixedly mounted on the discharge machine platform (300), and the precision positioning lifting cylinder (352) drives the positioning pin (351) to be inserted into the positioning hole.

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