CN117324767A - Lamp bead spot welding equipment - Google Patents

Lamp bead spot welding equipment Download PDF

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Publication number
CN117324767A
CN117324767A CN202311191513.0A CN202311191513A CN117324767A CN 117324767 A CN117324767 A CN 117324767A CN 202311191513 A CN202311191513 A CN 202311191513A CN 117324767 A CN117324767 A CN 117324767A
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CN
China
Prior art keywords
spot welding
lamp bead
arc
ring
welding
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Granted
Application number
CN202311191513.0A
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Chinese (zh)
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CN117324767B (en
Inventor
夏绪红
唐平平
向承东
胡盛松
李严政
黄滨
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Chongqing Aofang Auto Parts Co ltd
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Chongqing Aofang Auto Parts Co ltd
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Priority to CN202311191513.0A priority Critical patent/CN117324767B/en
Publication of CN117324767A publication Critical patent/CN117324767A/en
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Publication of CN117324767B publication Critical patent/CN117324767B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • B23K26/21Bonding by welding
    • B23K26/22Spot welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70Auxiliary operations or equipment
    • B23K26/702Auxiliary equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/36Electric or electronic devices

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

The invention belongs to the technical field of LED lamp bead welding, and discloses lamp bead spot welding equipment which comprises a feeding mechanism and a welding mechanism which are matched with each other; the feeding mechanism comprises a hydraulic lifting cylinder, a guide sleeve and a clamp which are sequentially connected from top to bottom, a radial guide groove is formed in the bottom of the guide sleeve in a penetrating mode, arc-shaped sliding grooves are formed in two sides of the radial guide groove, the clamp comprises two clamping jaws which are symmetrically arranged, and the two clamping jaws are in sliding fit with the arc-shaped sliding grooves; the welding mechanism comprises a mounting seat, a laser spot welding head connected to the bottom of the mounting seat and an electric telescopic rod fixed to one side of the mounting seat through a connecting rod, and the electric telescopic rod can be inserted into the radial guide groove from the upper side of the clamp when retracting to the shortest. In conclusion, the automatic feeding, positioning and welding of the lamp beads and the substrate can be effectively realized by utilizing the mutual matching of the feeding mechanism and the welding mechanism, and the automatic welding device is full-automatic in mechanical operation, accurate in positioning and high in welding efficiency.

Description

Lamp bead spot welding equipment
Technical Field
The invention belongs to the technical field of LED lamp bead welding, and particularly relates to lamp bead spot welding equipment.
Background
Automotive lamps generally comprise a substrate, LED beads welded on the substrate, a lens, a lamp shade and other structures. Wherein the LED lamp pearl is when the welding, for the luminous direction of adaptation lamps and lanterns difference and luminous homogeneity, each LED lamp pearl can weld on the base plate with the mode of different declination, however traditional welding operation is mostly based on manual observation adjusts the location declination of each LED lamp pearl, troublesome operation to still there is the relatively poor defect of LED lamp pearl welding positioning accuracy, based on this, proposes a lamp pearl spot welding equipment that can full-automatic accurate location in this application.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a spot welding device for lamp beads.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a spot welding device for lamp beads of a lamp comprises a feeding mechanism and a welding mechanism which are matched with each other;
the feeding mechanism comprises a hydraulic lifting cylinder, a guide sleeve and a clamp which are sequentially connected from top to bottom, a radial guide groove is formed in the bottom of the guide sleeve in a penetrating mode, arc-shaped sliding grooves are formed in two sides of the radial guide groove, the clamp comprises two clamping jaws which are symmetrically arranged, and the two clamping jaws are in sliding fit with the arc-shaped sliding grooves;
the welding mechanism comprises a mounting seat, a laser spot welding head connected to the bottom of the mounting seat and an electric telescopic rod fixed to one side of the mounting seat through a connecting rod, and the electric telescopic rod can be inserted into the radial guide groove from the upper side of the clamp when retracting to the shortest.
Preferably, the clamping jaw comprises an arc-shaped plate in sliding connection with the arc-shaped chute, a fixed seat and a movable seat, wherein the fixed seat and the movable seat are matched with the bottom of the arc-shaped plate, two groups of rotating rods which are parallel to each other are rotationally connected between the fixed seat and the movable seat, a clamping plate positioned below the fixed seat is fixed on one side of the movable seat, and a driving rod capable of being lifted is further connected on the movable seat in a sliding manner.
Preferably, the feeding mechanism further comprises a lifting ring coaxially assembled with the guide sleeve, the driving rods of the two clamping jaws are connected with the lifting ring through elastic telescopic rods,
or the driving rods of the two clamping jaws are connected through an arc-shaped rod, and the arc-shaped rod is connected with the lifting ring through an elastic telescopic rod.
Preferably, the center of guide pin bushing top department fixedly connected with center post, just the outside coaxial cover of center post is equipped with the stop collar, stop collar surface mounting has the spiral guide rail, just set up on the lift ring can with spiral guide rail sliding fit's spiral guide slot.
Preferably, a connecting seat is fixed between the bottom of the hydraulic lifting cylinder and the top of the central column, a gear shaft is rotatably installed between the connecting seat and the guide sleeve, and the gear shaft is positioned on one side of the central column and is meshed and connected with the inner wall of the limit sleeve.
Preferably, the outside symmetry sliding connection of guide pin bushing has two pinion racks down, and two pinion racks down are located radial guide slot's both sides respectively, and two pinion racks down can mesh respectively and compress tightly in two arc tops.
Preferably, a limiting ring is fixed outside the guide sleeve, and the limiting ring is positioned above the radial guide groove; the limiting ring is provided with two groups of elastic telescopic rods in a sliding penetrating mode, the tops of the two groups of elastic telescopic rods are connected with an upper toothed ring, the bottoms of the two groups of elastic telescopic rods are connected with two lower toothed plates respectively, the upper toothed ring is arranged outside the guide sleeve in a sliding sleeved mode, and a limiting spring is connected between the upper toothed ring and the limiting ring.
Preferably, the lamp bead spot welding device further comprises a base arranged below the feeding mechanism and the welding mechanism, and a negative suction area for sucking and fixing the substrate and a feeding area for supporting the lamp beads are arranged on the base.
Preferably, at least one feeding table is installed in the feeding area in a damping rotation mode, and the lamp beads are supported at the top of the feeding table in a negative suction mode.
Preferably, the lamp bead spot welding device further comprises first moving guide rails respectively arranged on two sides of the base, the two groups of first moving guide rails are slidably connected with second moving guide rails, the feeding mechanism and the welding mechanism are slidably connected to the second moving guide rails, and the radial guide grooves are parallel to the second moving guide rails.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, by utilizing the mutual matching of the feeding mechanism and the welding mechanism, the automatic feeding, positioning and welding of the lamp beads and the substrate can be effectively realized, and the full-automatic mechanical operation and positioning are accurate and the welding efficiency is high.
(2) The feeding mechanism comprises a guide sleeve provided with a radial guide groove and a clamp capable of rotating around the guide sleeve, and the welding mechanism comprises an electric telescopic rod capable of being inserted into the radial guide groove, so that the clamping limit of the lamp beads can be realized by matching with the electric telescopic rod after the automatic feeding and positioning of the feeding mechanism are completed, the stability during welding is effectively improved, and meanwhile, the mutual interference between the clamp and a laser spot welding head can be avoided.
(3) The fixture is of a quadrilateral structure consisting of a fixed seat, a movable seat and two groups of rotating rods, the movable seat is further connected with a driving rod for driving the quadrilateral structure to swing in a sliding manner, the driving rod is matched with the lifting ring, and the lifting ring sequentially slides outside the guide sleeve and the limit sleeve provided with the spiral guide rail, so that the rotation and swing clamping of the integral fixture can be sequentially performed based on the lifting of the lifting ring, and the integral structure is assembled more reasonably.
(4) The stop collar is established to hollow structure, and the inside tooth axle that can order about this stop collar rotatory that is equipped with of stop collar, can adjust the pay-off deflection of lamp pearl based on the lift of lift ring at the stop collar outside and the rotation of stop collar self from this, and then satisfies the location demand of the different welding deflection of each lamp pearl on the base plate in a flexible way.
(5) The elastic compression structure matched with the clamp is further arranged outside the guide sleeve, so that the integral clamp can be stably positioned at the current angle when the lifting ring is lifted outside the guide sleeve, and the feeding and positioning accuracy of the lamp beads is further improved.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of a feed mechanism according to the present invention;
FIG. 3 is an exploded view of the feed mechanism of the present invention;
fig. 4 is an enlarged view at a in fig. 3;
FIGS. 5-6 are schematic views illustrating the cooperation of the fixture and the lifting ring according to the present invention;
FIG. 7 is a schematic view of a jaw structure according to the present invention;
FIG. 8 is a schematic view of the cooperation of the arcuate plate, the driving rod and the lifting ring in the present invention;
FIG. 9 is a schematic view of a guide sleeve according to the present invention;
FIG. 10 is a plan schematic view of a clamp according to the present invention;
FIG. 11 is a plan schematic view of the clamp engaging the guide sleeve in accordance with the present invention;
FIG. 12 is a perspective view of a welding mechanism according to the present invention;
in the figure: a base-100; a feeding table-101; a feeding mechanism-200; a hydraulic lift cylinder-201; guide sleeve-202; stop collar-2021; upper toothed ring-2022; lower toothed plate-2023; a clamp-203; arc-shaped plate-2031; a fixed seat-2032; movable base-2033; a rotating rod-2034; splint-2035; a drive rod-2036; radial guide slots-204; lifting ring-205; center post-206; limit sleeve-207; a connecting seat-208; a tooth shaft-209; a welding mechanism-300; a mounting base-301; a laser spot welding head-302; an electric telescopic rod-303; a first moving rail-400; and a second moving rail-500.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the lamp bead spot welding device provided by the invention mainly comprises the following structure:
a base 100;
first moving guide rails 400 symmetrically disposed at both sides of the base 100;
a second moving rail 500 slidably coupled between the two sets of first moving rails 400;
the feeding mechanism 200 and the welding mechanism 300 are slidably connected to the second moving rail 500.
The base 100 is provided with a suction area a for sucking and fixing the substrate and a loading area b for supporting the lamp beads; the cooperation of the first moving rail 400 and the second moving rail 500 enables the feeding mechanism 200 and the welding mechanism 300 to move in any direction in the horizontal plane, thereby facilitating the spot welding fixation of a plurality of lamp beads on the substrate.
With continued reference to fig. 1, at least one loading table 101 is installed in the loading area a in a damping rotation manner, the lamp beads are supported on the top of the loading table 101 in a negative suction manner, and the loading deflection angles of the lamp beads can be flexibly adjusted based on the rotation of the loading table 101, so that each lamp bead can be accurately positioned on the substrate at different preset deflection angles.
In an embodiment of the present invention, referring to fig. 2 and 3, referring to the feeding mechanism 200, the feeding mechanism 200 includes a lifting ring 205, a hydraulic lifting cylinder 201, a connecting seat 208, a central column 206, a guide sleeve 202 and a clamp 203 sequentially connected from top to bottom, wherein the hydraulic lifting cylinder 201 is directly connected to the second moving rail 500, the diameter of the central column 206 is smaller than that of the guide sleeve 202, a limiting sleeve 207 is coaxially sleeved outside the central column 206, the outer diameter of the limiting sleeve 207 is equal to that of the guide sleeve 202, and the lifting ring 205 is lifted outside the limiting sleeve 207 and the guide sleeve 202. In addition, the surface of the limit sleeve 207 is fixed with a spiral guide rail, and the lifting ring 205 is provided with a spiral guide groove which can be in sliding fit with the spiral guide rail, so that the lifting ring 205 can synchronously rotate around the central shaft of the guide sleeve 202 when the outside of the limit sleeve 207 is lifted, and the lifting ring 205 does not rotate when the outside of the guide sleeve 202 is lifted.
With continued reference to fig. 2 and 3, a radial guide groove 204 parallel to the second moving guide rail 500 is formed at the bottom of the guide sleeve 202, and arc-shaped sliding grooves are formed on two sides of the radial guide groove 204; the clamp 203 comprises two clamping jaws which are symmetrically arranged, and the two clamping jaws are in sliding fit with the arc-shaped sliding grooves.
Referring to fig. 7, the clamping jaw includes an arc plate 2031 slidably connected with the arc chute, and a fixed seat 2032 and a movable seat 2033 which are matched with the bottom of the arc plate 2031, two sets of rotating rods 2034 (which can form a swingable quadrilateral structure) parallel to each other are rotatably connected between the fixed seat 2032 and the movable seat 2033, a clamping plate 2035 located below the fixed seat 2032 is fixed on one side of the movable seat 2033, and a driving rod 2036 matched with the lifting ring 205 is also slidably connected on the movable seat 2033.
Specifically, regarding the manner in which the drive rod 2036 mates with the lift ring 205, the present invention provides two types of mating as shown in fig. 5, 6, and 8:
the driving rods 2036 of the two clamping jaws are connected with the lifting ring 205 through elastic telescopic rods;
and two driving rods 2036 of the clamping jaws are connected through arc-shaped rods, and the arc-shaped rods are connected with the lifting ring 205 through elastic telescopic rods.
The elastic telescopic rod is an existing telescopic rod, and specifically comprises an inner rod, an outer rod which are connected in a sliding manner, and a spring (not shown in the specific structural diagram) connected between the inner rod and the outer rod.
In the two matching ways, one of the two matching ways realizes symmetrical connection, but as can be seen from the principle shown in fig. 11, since the elastic telescopic rod connecting the driving rod 2036 and the lifting ring 205 will interfere with the radial guide groove 204, only two symmetrical elastic telescopic rods will result in a smaller rotatable angle of the clamp 203. Only one set of elastic telescopic rods is connected to the lifting ring 205, so that the angle at which the clamp 203 can rotate is relatively large.
Based on the above disclosed feeding mechanism 200, the specific feeding principle is as follows:
firstly, based on the cooperation of the first moving guide rail 400 and the second moving guide rail 500, the feeding mechanism 200 moves to the position right above any loading table 101 supporting the lamp beads; in particular, for the driving movement of the first moving rail 400 and the second moving rail 500, it is preferable to use a conventional linear driving structure such as a linear motor or a rotary screw.
Then, the hydraulic lifting cylinder 201 is utilized to drive the whole limiting sleeve 207, the guide sleeve 202 and the clamp 203 to descend until the bottom of the clamping plate 2035 abuts against the top of the feeding table 101, and the two clamping plates 2035 are respectively positioned on two sides of the lamp beads. (in the initial state, the lifting ring 205 is sleeved outside the limit sleeve 207, the elastic telescopic rod connected with the driving rod 2036 is in an extended state, and the two clamping jaws of the clamp 203 are in an open state)
Then, the lifting ring 205 is driven to descend (in the present invention, an electric lifting rod is connected between the lifting ring 205 and the arc plate 2031 for driving the lifting ring 205 to lift), at this time, the distance between the lifting ring 205 and the arc plate 2031 is shortened, the elastic telescopic rod connected to the driving rod 2036 is retracted, and the clamping plate 2035 abuts on the loading table 101, so that the whole clamp 203 is still kept in an open state. Meanwhile, in the process of descending the lifting ring 205, the lifting ring 205 is driven to rotate outside the limiting sleeve 207 due to the sliding fit of the spiral guide groove and the spiral guide rail, and the lifting ring 205 is connected with the driving rod 2036 and the integral clamp 203 through the elastic telescopic rod, so that the rotation of the lifting ring 205 can drive the integral clamp 203 to synchronously rotate, the bottom of the clamping plate 2035 is abutted against the top of the feeding table 101, and accordingly, the feeding table 101 can synchronously rotate based on the abutting friction between the clamping plate 2035 and the feeding table 101, and the positioning deflection angle of the lamp beads on the feeding table 101 is changed (in the process, the lifting ring 205 descends to the lowest position of the limiting sleeve 207, namely, the spiral guide groove and the spiral guide rail are in a critical separation state, and the elastic telescopic rod connected with the driving rod 2036 is retracted to the shortest state).
Then, the hydraulic lifting cylinder 201 is used to drive the integral clamp 203 to lift up, so that a certain gap is generated between the clamping plate 2035 and the rotated feeding table 101 (the feeding table 101 is set to be in damping rotation, so that the feeding table 101 can be stably positioned at the current angle after the clamp 203 stops rotating), meanwhile, the lifting ring 205 is continuously driven to descend (to descend outside the guide sleeve 202), at the moment, the spiral guide groove and the spiral guide rail are completely separated, and therefore, the lifting ring 205 only performs descending movement without autorotation, and the corresponding integral clamp 203 does not rotate. In addition, since the elastic telescopic rod connected to the driving rod 2036 is retracted to the shortest state, and a gap is formed between the clamping plate 2035 and the feeding table 101, the lifting ring 205 drives the driving rod 2036 to move down during the continuous descending process through the elastic telescopic rod, so as to drive the movable base 2033 to swing down, and as can be seen by combining the quadrilateral structure formed by the cooperation of the movable base 2033, the fixed base 2032 and the two sets of rotating rods 2034 and the principle shown in fig. 10, when the movable base 2033 swings down, the movable bases 2033 of the two sets of clamping jaws are also close to each other, so that the two clamping plates 2035 are close to each other, and clamp the lamp bead (specifically, the lamp bead 203after the angle adjustment is completed).
Finally, the lifting ring 205 is positioned at the current position, and the hydraulic lifting cylinder 201 is utilized to drive the whole clamp 203 and the lamp beads to lift, so that the material taking is completed. After the material is taken, the lamp beads are fed to the substrate in the negative suction area a based on the cooperation of the first movable guide rail 400 and the second movable guide rail 500.
To sum up, in the present embodiment, in order to flexibly adjust the feeding angle of the lamp beads, as shown in fig. 3 and 4, a toothed shaft 209 is preferably rotatably mounted between the connection seat 208 and the guide sleeve 202, the toothed shaft 209 is located at one side of the center post 206, and the toothed shaft 209 is engaged with the inner wall of the limit sleeve 207. The gear shaft 209 is specifically driven by a micro motor installed inside the connection seat 208, and the gear shaft 209 and the limit sleeve 207 can be effectively driven to rotate by utilizing the internal engagement between the gear shaft 209 and the limit sleeve 207. Specifically, taking the structure shown in fig. 5 as an example, assume that in the process that the lifting ring 205 moves from the top of the stop collar 207 to the bottom thereof, the lifting ring 205 can rotate 60 ° (clockwise), and the lamp beads are positioned on the loading table 101 at an initial position parallel to the radial guide grooves 204:
in the initial unadjusted state, when the lifting ring 205 is matched with the top of the limit sleeve 207, the connecting line of two groups of clamping jaws in the clamp 203 is perpendicular to the radial guide groove 204 (thereby ensuring that the two clamping plates 2035 can be symmetrically distributed on two sides of the lamp bead); in this state, when the lifting ring 205 descends to the bottom of the stop collar 207, the whole clamp 203 and the loading table 101 are driven to rotate clockwise by 60 °, i.e. the lamp bead positioning deflection angle is 60 °.
The rotation of the stop collar 207 is used for adjusting the angle of the positioning deflection angle: the miniature motor is utilized to drive the gear shaft 209, the gear shaft 209 drives the limit sleeve 207 to rotate (anticlockwise), under the condition that the limit sleeve 207 rotates 15 degrees, under the driving, the whole lifting ring 205 and the clamp 203 synchronously rotate anticlockwise by 15 degrees along with the rotation of the limit sleeve 207 as the lifting ring 205 and an electric lifting rod connected with the lifting ring are not started; after adjustment, the lifting ring 205 is driven to descend, so that the lifting ring 205 and the clamp 203 rotate clockwise for resetting, after the rotation resetting, the connecting lines of two groups of clamping jaws in the clamp 203 are still perpendicular to the radial guide groove 204, but the distance between the lifting ring 205 and the bottom of the limit sleeve 207 is reduced, in this state, when the lifting ring 205 descends to the bottom of the limit sleeve 207, only the whole clamp 203 and the feeding table 101 are driven to rotate clockwise by 45 degrees, namely, the lamp bead positioning deflection angle is 45 degrees.
To sum up, in the present embodiment, in order to further ensure that the lifting ring 205 can be positioned at the current angle (only the descending movement is performed without performing autorotation) when the guide sleeve 202 descends outside, it is also preferable to refer to fig. 9 as follows: a limiting ring 2021 is fixed outside the guide sleeve 202, and the limiting ring 2021 is positioned above the radial guide groove 204; the limiting rings 2021 are slidably penetrated by two groups of elastic telescopic rods (the maximum length of each elastic telescopic rod is smaller than the axial length of the guide sleeve 202, the elastic force of the springs in the elastic telescopic rods is larger than the gravity of the lower toothed plate 2023), the tops of the two groups of elastic telescopic rods are jointly connected with an upper toothed ring 2022 which can be meshed with the lifting ring 205, the bottoms of the two groups of elastic telescopic rods are respectively connected with two lower toothed plates 2023 which can be meshed with and tightly press the two arc plates 2031, the two lower toothed plates 2023 are respectively positioned on two sides of the radial guide groove 204, the upper toothed ring 2022 and the lower toothed plates 2023 are both slidably sleeved outside the guide sleeve 202, and a limiting spring is connected between the upper toothed ring 2022 and the limiting rings 2021. Therefore, when the lifting ring 205 descends outside the guide sleeve 202, the bottom of the lifting ring 205 is meshed with the upper toothed ring 2022, and presses the upper toothed ring 2022 downward, the upper toothed ring 2022 synchronously presses down the limiting spring and the elastic telescopic rod connected with the limiting spring along with the downward movement of the lifting ring 205, the elastic telescopic rod is compressed, the bottom end of the elastic telescopic rod acts on the lower toothed plate 2023, so that the lower toothed plate 2023 has a downward movement tendency, is pressed down to be meshed on the arc plate 2031 of the clamp 203, and the lower toothed plate 2023 is only axially and slidably connected with the guide sleeve 202 and cannot rotate around the guide sleeve 202, so that when the lower toothed plate 2023 is meshed with the arc plate 2031, the arc plate 2031 and the integral clamp 203 cannot rotate around the guide sleeve 202, and therefore the lifting ring 205 and the clamp 203 can be stably positioned at the current angle, and the arrangement of the elastic telescopic rod and the limiting spring cannot interfere the descending of the lifting ring 205. Conversely, when the lifting ring 205 is lifted and reset to be matched with the limiting sleeve 207, the lower toothed plate 2023 is separated from the arc-shaped plate 2031 based on the rebound of the limiting spring and the pulling of the elastic telescopic rod, so that the lifting ring 205 and the clamp 203 can rotate around the guide sleeve 202 when the lifting ring 205 is lifted and lowered outside the limiting sleeve 207.
In an embodiment of the present invention, referring to fig. 12, as to the welding mechanism 300, the welding mechanism 300 includes a mounting base 301 and two lifting cylinders fixed to the bottom of the mounting base 301, the mounting base 301 is directly connected to the second moving rail 500, one lifting cylinder bottom is connected to the laser spot welding head 302, the other lifting cylinder bottom is connected to the electric telescopic rod 303 through a connecting rod, and the electric telescopic rod 303 is located on the side of the feeding mechanism 200.
In summary, the discharging principle of the feeding mechanism 200 and the welding mechanism 300 and the specific welding principle of the welding mechanism 300 are as follows:
after the material is taken, based on the cooperation of the first moving guide rail 400 and the second moving guide rail 500, the feeding mechanism 200 clamped with the lamp beads moves to the position right above the substrate, and the hydraulic lifting cylinder 201 is utilized to drive the integral clamp 203 to descend, so that the mounting surface at the bottom of the lamp beads is attached to the top of the substrate.
Then, the lifting cylinder at the bottom of the mounting seat 301 is used for driving the electric telescopic rod 303 to descend to a position flush with the radial guide groove 204, and the mounting seat 301 is made to approach the feeding mechanism 200 based on the cooperation of the second moving guide rail 500, so that the electric telescopic rod 303 is inserted into the radial guide groove 204 from above the clamp 203, and the central axis of the electric telescopic rod 303 and the central axis of the guide sleeve 202 are ensured to be positioned on the same straight line. Referring specifically to the principle shown in fig. 11, the two driving rods 2036 are connected to the lifting ring 205 by two elastic telescopic rods or one elastic telescopic rod, and the dotted line range shown in fig. 11 is the rotatable range of the integral fixture 203, so that the elastic telescopic rods and the electric lifting rod are located on one side of the radial guide groove 204 (the port facing the welding mechanism 300), and the electric telescopic rod 303 is not interfered to be inserted into the radial guide groove 204.
Then, the electric telescopic rod 303 is started in the radial guide groove 204, so that the bottom of the electric telescopic rod 303 is pressed down on the top of the lamp bead, and stable matching of the lamp bead and the substrate is ensured. In this state, the lifting ring 205 is driven to lift up, the lifting ring 205 is lifted up outside the guide sleeve 202, so that the driving rod 2036 is pulled to lift up, and the clamping jaws of the two clamping jaws 203 swing back to be in an open state (the spring force of the elastic telescopic rod connected with the driving rod 2036 is larger than the gravity of the movable base 2033 and the clamping plate 2035 should be ensured), after the clamping jaw 203 is completely opened, the movable base 2033 cannot continue to swing up due to the limitation of the arc-shaped plate 2031, so that the driving rod 2036 cannot continue to move up, at this time, the lifting ring 205 is lifted up to the abutting of the limiting sleeve 207, then the lifting ring 205 continues to lift up, and the lifting ring 205 and the clamping jaw 203 are stopped to swing back when the sliding fit of the spiral guide groove and the spiral guide rail returns until the connecting line of the clamping jaw 203 is perpendicular to the radial guide groove 204, at this time, the radial guide groove 204 and the clamping jaw 203 are in a completely dislocated state, and the whole feeding mechanism 200 can be far away from the welding mechanism 300 based on the second moving guide rail 500, and the clamping jaw 203 cannot interfere with the elongated electric telescopic rod 303.
Finally, the lifting cylinder at the bottom of the mounting seat 301 is used for driving the laser spot welding head 302 to descend, and the lamp beads and the substrate are welded and fixed by laser. In the welding process, the lamp beads are tightly fixed on the substrate through the electric telescopic rods 303, so that the stability and positioning accuracy during welding are effectively ensured, the feeding mechanism 200 is far away from the welding device, the laser spot welding head 302 and the clamp 203 cannot interfere, and the weldable area between the lamp beads and the substrate is greatly expanded.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A lamp bead spot welding device is characterized in that: comprises a feeding mechanism (200) and a welding mechanism (300) which are matched with each other;
the feeding mechanism (200) comprises a hydraulic lifting cylinder (201), a guide sleeve (202) and a clamp (203) which are sequentially connected from top to bottom, a radial guide groove (204) is formed in the bottom of the guide sleeve (202) in a penetrating mode, arc-shaped sliding grooves are formed in two sides of the radial guide groove (204), the clamp (203) comprises two clamping jaws which are symmetrically arranged, and the two clamping jaws are in sliding fit with the arc-shaped sliding grooves;
the welding mechanism (300) comprises a mounting seat (301) and two lifting cylinders fixed at the bottom of the mounting seat (301), wherein the bottom of one lifting cylinder is connected with a laser spot welding head (302), the bottom of the other lifting cylinder is connected with an electric telescopic rod (303) through a connecting rod, and the electric telescopic rod (303) can be inserted into the radial guide groove (204) from the upper part of the clamp (203) when being retracted to the shortest time.
2. A lamp bead spot welding apparatus as defined in claim 1, wherein: the clamping jaw comprises an arc-shaped plate (2031) which is in sliding connection with the arc-shaped sliding groove, a fixed seat (2032) and a movable seat (2033) which are matched with the bottom of the arc-shaped plate (2031), two groups of rotating rods (2034) which are parallel to each other are rotationally connected between the fixed seat (2032) and the movable seat (2033), a clamping plate (2035) which is positioned below the fixed seat (2032) is fixed on one side of the movable seat (2033), and a driving rod (2036) which can be lifted is also in sliding connection with the movable seat (2033).
3. A lamp bead spot welding apparatus as defined in claim 2, wherein: the feeding mechanism (200) also comprises a lifting ring (205) coaxially assembled with the guide sleeve (202), the driving rods (2036) of the two clamping jaws are connected with the lifting ring (205) through elastic telescopic rods,
or the driving rods (2036) of the two clamping jaws are connected through arc-shaped rods, and the arc-shaped rods are connected with the lifting ring (205) through elastic telescopic rods.
4. A lamp bead spot welding apparatus according to claim 3, wherein: the center of guide pin bushing (202) top department fixedly connected with center post (206), just the outside coaxial sleeve of center post (206) is equipped with stop collar (207), stop collar (207) surface mounting has spiral guide rail, just offer on lift ring (205) can with spiral guide rail sliding fit's spiral guide slot.
5. A lamp bead spot welding apparatus as defined in claim 4, wherein: a connecting seat (208) is fixed between the bottom of the hydraulic lifting cylinder (201) and the top of the central column (206), a toothed shaft (209) is rotatably installed between the connecting seat (208) and the guide sleeve (202), and the toothed shaft (209) is positioned on one side of the central column (206) and is meshed with the inner wall of the limiting sleeve (207).
6. A lamp bead spot welding apparatus according to claim 3, 4 or 5, wherein: the guide sleeve (202) is symmetrically and slidingly connected with two lower toothed plates (2023) outside, the two lower toothed plates (2023) are respectively positioned on two sides of the radial guide groove (204), and the two lower toothed plates (2023) can be respectively meshed and pressed on the tops of the two arc-shaped plates (2031).
7. A lamp bead spot welding apparatus as defined in claim 6, wherein: a limiting ring (2021) is fixed outside the guide sleeve (202), and the limiting ring (2021) is positioned above the radial guide groove (204); the limiting rings (2021) are penetrated by two groups of elastic telescopic rods in a sliding manner, the tops of the two groups of elastic telescopic rods are connected with an upper toothed ring (2022) which can be meshed with the lifting ring (205) together, the bottoms of the two groups of elastic telescopic rods are connected with two lower toothed plates (2023) respectively, the upper toothed ring (2022) is sleeved outside the guide sleeve (202) in a sliding manner, and a limiting spring is connected between the upper toothed ring (2022) and the limiting rings (2021).
8. A lamp bead spot welding apparatus as defined in claim 1, wherein: the device further comprises a base (100) arranged below the feeding mechanism (200) and the welding mechanism (300), and a negative suction area for fixing the substrate in a negative suction mode and a feeding area for supporting the lamp beads are arranged on the base (100).
9. A lamp bead spot welding apparatus as defined in claim 8, wherein: at least one feeding table (101) is installed in the feeding area in a damping rotation mode, and the lamp beads are supported at the top of the feeding table (101) in a negative suction mode.
10. A lamp bead spot welding apparatus according to claim 8 or 9, wherein: the welding device is characterized by further comprising first movable guide rails (400) which are respectively arranged on two sides of the base (100), wherein two groups of first movable guide rails (400) are connected with second movable guide rails (500) in a sliding mode, the feeding mechanism (200) and the welding mechanism (300) are connected onto the second movable guide rails (500) in a sliding mode, and the radial guide grooves (204) are parallel to the second movable guide rails (500).
CN202311191513.0A 2023-09-15 2023-09-15 Lamp bead spot welding equipment Active CN117324767B (en)

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