Glasses intelligent wire feeding welding equipment

Abstract

The present invention relates to automated welding equipment, in particular to an intelligent wire feeding welding equipment for glasses used for welding the components of eyeglass frames. The equipment includes a welding jig; a wire feeding device: arranged on both sides of the welding jig, including a wire coil mounting bracket and a wire conveying assembly located next to the wire coil mounting bracket; a spot welding device: arranged on both sides of the wire jig, including a spot welding assembly for pulling the wire and spot welding and a bearing for the spot welding assembly; a welding heating device: arranged on both sides of the welding jig, including a high-frequency welding head and a heating wire connected to the high-frequency welding head and extending to the welding position. The present invention can automatically clamp the frame assembly to be processed, automatically convey the welding wire and realize spot welding, and the welding wire conveyed each time and the welding position can be highly uniform, which not only improves the efficiency of batch welding operations, but also effectively ensures the consistency of the welding points of batch welded products, and ensures the output and quality of mass production.

Description

Technical Field

[0001] The invention relates to automated welding equipment, in particular to glasses intelligent welding wire feeding welding equipment used for welding parts of glasses frames. Background Art

[0002] In the production and manufacturing of glasses, the main manufacturing processes are centered around the production of frames, among which welding is an important step in the processing of frames, especially the welding between the frames and the bridge of the nose. Because the frames on both sides and the bridge of the nose in the middle are separate components before welding, in order to maintain the stability of the components during welding, some special welding jigs are generally designed, and then welding is performed with a handheld welding gun. This method has high requirements on the operating skills and stability of the operator. It is difficult to maintain consistent welding quality among different personnel. In mass production, the consistency of the product is difficult to control. At the same time, this type of processing has low processing efficiency and high scrap rate, which reduces the output and quality of the product. Summary of the invention

[0003] The invention provides an intelligent welding wire feeding equipment for glasses, which can automatically complete the welding of the glasses frame and improve the output and quality of the products.

[0004] The device includes,

[0005] Welding jig: used to carry and fix the frame and nose bridge of the glasses to be welded;

[0006] Welding wire feeding device: It is arranged on both sides of the welding fixture, and is used to install the welding wire coil and output the welding wire from the welding wire coil. The welding wire feeding device on each side includes a welding wire coil mounting bracket and a welding wire conveying assembly located next to the welding wire coil mounting bracket;

[0007] Spot welding device: It is arranged on both sides of the welding wire fixture, and is used to pull the welding wire delivered by the welding wire feeding device to the welding position and perform spot welding. The spot welding device on each side includes a spot welding assembly for pulling the welding wire and performing spot welding, and a spot welding adjustment assembly for carrying the spot welding assembly and adjusting the spot welding position;

[0008] Welding heating device: It is installed on both sides of the welding fixture and is used to heat the welding wire at the spot welding point. The welding heating device on each side includes a high-frequency welding head and a heating wire connected to the high-frequency welding head and extending to the welding position.

[0009] Preferably, the welding jig includes a jig base located at the bottom, a jig support seat located on the jig base, and a frame mold corresponding to the welded frame installed on the upper part of the jig support seat; a clamp is provided on the frame mold at a position corresponding to each frame, and a middle pressure plate is provided on the frame mold at a position corresponding to the bridge of the nose, and the middle pressure plate is connected to a clamping cylinder installed on the jig base.

[0010] Preferably, the welding wire conveying assembly includes a fixed base plate, a transmission box is provided on the fixed base plate, and a servo motor is provided on the back of the transmission box; a driving wheel connected to the servo motor and two driven wheels connected to the driving wheel are provided in the transmission box; a driving wheel connected to the driven wheel shaft and a pressure wheel located above the driving wheel are provided on the outer side of the front cover of the transmission box; the welding wire coil mounting bracket is fixed on the fixed base plate.

[0011] Preferably, the pressure wheel is installed on a rotating arm, one end of the rotating arm is installed on the fixed base plate through a rotating shaft, and the other end of the rotating arm is installed on the fixed base plate through an adjusting nut; a mounting seat is respectively provided on the outer side of the two driving wheels and between the two driving wheels, each mounting seat is provided with a wire feeding core tube for the welding wire to pass through, and a guide block is provided on the outside of the mounting seat outside the two driving wheels.

[0012] Preferably, the spot welding adjustment assembly includes an XYZ base plate and an XYZ assembly mounted on the XYZ base plate, a free guide arm that can adjust the extension direction is connected to the XYZ assembly, the free guide arm has a connecting end and a free end, the connecting end of the free guide arm is movably connected to the XYZ assembly, and the spot welding assembly includes a cylinder fixing seat connected to the free end of the free guide arm, a spot welding cylinder mounted on the cylinder fixing seat, a guide fixing block fixed on the movable part of the spot welding cylinder, and a guide needle mounted on the guide fixing block.

[0013] Preferably, the XYZ assembly includes an XY slide mounted on the XYZ base plate and a Z slide mounted on the XY slide, a Z-direction plate is provided on the side of the Z slide, and a connecting end mounting column perpendicular to the Z-direction plate is provided on the Z-direction plate; the free guide arm is a multi-section movable structure, the connecting end of the free guide arm is rotatably mounted on the connecting end mounting column, a free end mounting column is provided on the cylinder fixing seat, and the free end of the free guide arm is rotatably mounted on the free end mounting column.

[0014] Preferably, the welding and heating devices each have a slide mounting plate, and the high-frequency welding head is mounted on the XYZ axis slide mounting plate via a slide.

[0015] Preferably, the jig base and the slide mounting plate are both installed on a horizontal work surface, a frame is provided below the work surface, and a welding delivery group bracket is provided on the work surface. The welding delivery group bracket includes side brackets vertically standing on the work surface on both sides and an upper bracket horizontally installed between the tops of the side brackets on both sides, and the fixed bottom plates of the welding wire delivery devices on both sides are vertically fixed to the sides of the upper bracket.

[0016] Preferably, the welding group bracket is provided with infrared sensing devices located on both sides of the welding fixture, and the infrared sensing device on each side includes a movable arm connected to the welding group bracket and extending toward the welding position, and a sensing component installed at the free end of the movable arm.

[0017] Preferably, an exhaust gas intake pipe is provided on the work surface, and the exhaust gas intake pipe extends from above the welding fixture to below the work surface. A cooling assembly is also provided next to the welding fixture, and the cooling assembly includes a cooling pipe fixing seat and a cooling pipe installed on the cooling pipe fixing seat.

[0018] The intelligent wire feeding welding equipment for glasses of the present invention can automatically clamp the frame components to be processed, automatically feed the welding wire and realize spot welding, and the welding wire and welding position fed each time can be highly uniform, which not only improves the efficiency of batch welding operations, but also effectively ensures the consistency of welding points of batch welded products, and ensures the output and quality of mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a welding assembly according to a first embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of a welding jig according to a first embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the welding wire feeding device according to the first embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of the transmission box of the welding wire feeding device according to the first embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the outer structure of the front cover of the welding wire feeding device according to the first embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of a spot welding device according to a first embodiment of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a welding heating device according to the first embodiment of the present invention.

[0026] Figure 8 is a schematic diagram of the overall structure of the second embodiment of the present invention; DETAILED DESCRIPTION

[0027] like Figure 1-Figure 7 As shown, the glasses intelligent welding wire feeding device of the first embodiment of the present invention comprises:

[0028] Welding fixture 1: used to carry and fix the frame and nose bridge of the glasses frame a to be welded;

[0029] The welding wire feeding device 2 is arranged on both sides of the welding fixture 1, and is used to install the welding wire coil 21 and output the welding wire from the welding wire coil 21. The welding wire feeding device 2 on both sides includes a welding wire coil mounting bracket 22 and a welding wire conveying assembly 23 located next to the welding wire coil mounting bracket 22;

[0030] Spot welding device 3: arranged on both sides of the welding wire fixture 1, used to pull the welding wire delivered by the welding wire feeding device 2 to the welding position and perform spot welding, including a spot welding assembly 31 for pulling the welding wire and performing spot welding and a spot welding adjustment assembly 32 for carrying the spot welding assembly and adjusting the spot welding position;

[0031] The welding heating device 4 is arranged on both sides of the welding fixture and is used to heat the welding wire at the spot welding position. It includes a high-frequency welding head 41 and a heating wire 42 connected to the high-frequency welding head 41 and extending to the welding position.

[0032] During operation, the two eyeglass frames and the nose bridge to be welded as one are placed on the welding jig 1 and fixed, and the welding wire feeding device 2 continuously unwinds and feeds the welding wire from the welding wire roll 21. Since there is a welding point on each side of the eyeglass frames and the nose bridge on the left and right sides, a welding wire feeding device 2 is respectively arranged on both sides of the welding jig 1 to supply the welding wire. The welding wire feeding device 2 on each side feeds the welding wire to the spot welding device 3. After the components of the eyeglass frame a are placed, the spot welding adjustment component 32 is first adjusted to align the spot welding component with the welding point. During operation, the spot welding component feeds the welding wire to the welding point position, and the welding heating device 4 heats the welding wire sent to the welding point position, so that it welds the welding point between the eyeglass frame and the nose bridge.

[0033] In the technical solution of this embodiment, the frame assembly is self-clamped, and then the welding wire is automatically supplied by the welding wire feeding device 2. The electric welding device 3 and the welding heating device 4 cooperate to achieve welding. The whole process does not require human participation. After setting the delivery volume and heating temperature of each device, it is only necessary to manually remove the welded frame after the welding is completed and place the frame assembly to be welded. Therefore, each welding action can be accurately controlled, which not only improves the efficiency but also ensures the quality of mass production.

[0034] Among them, the welding fixture 1 is required to be able to stably fix the frame and the bridge of the nose before welding, which can be achieved by clamping, pressing and other structures; the welding wire feeding device 2 mainly completes the unwinding and conveying of the welding wire, and the welding wire conveying component 23 is a power device for continuously conveying the welding wire to the welding point. In the electric welding device 3, the spot welding adjustment component 32 is a structure that can adjust the spot welding component 31 to the position of the welding point and keep it in this position. It can be electrically adjusted or manually adjusted. Since there are many models of glasses and the positions of the welding points are different and irregular, manual adjustment is preferably used in this embodiment, which is easier and faster to position. When welding a batch of frames of the same model, it is only necessary to adjust the position once at the beginning.

[0035] In this embodiment, the welding jig 1 includes a jig base 101 located at the bottom, a jig support seat 102 located on the jig base 101, and a frame mold 103 corresponding to the welded frame installed on the upper part of the jig support seat 102; a clamping clamp 104 is provided on the frame mold 103 corresponding to the position of each frame, and a middle pressure plate 105 is provided on the frame mold 103 corresponding to the bridge of the nose, and the middle pressure plate 105 is connected to a clamping cylinder 106 installed on the jig base 101.

[0036] The jig base 101 and the jig support seat 102 are used as the overall support of the welding jig 1, the frame mold 103 is used to support the frame and the bridge of the nose, different frames use different frame molds 103 according to different shapes and curvatures, and the clamping clamps 104 are responsible for fixing the frames on both sides. Since the frame has a full frame or a half frame, each clamping clamp 104 has multiple pressing plates to press different parts of the frame to maintain the stability of the frame. The bridge of the nose is separately clamped by a medium pressure plate 105 in conjunction with a pressing cylinder 106.

[0037] In this embodiment, the welding wire conveying assembly 23 includes a fixed base plate 231, a transmission box 232 is provided on the fixed base plate 231, and a servo motor 233 is provided on the back of the transmission box 232; a driving wheel 234 connected to the servo motor 233 and two driven wheels 235 connected to the driving wheel 234 are provided in the transmission box 232; a driving wheel 237 connected to the driven wheel shaft 235 and a pressure wheel 238 located above the driving wheel 237 are provided on the outer side of the front cover 236 of the transmission box 232; the welding wire roll mounting bracket 22 is fixed on the fixed base plate 231.

[0038] In the initial state, the welding wire is pulled out from the welding wire coil and passed through the driving wheel 237 and the pressing wheel 238. With the driving of the servo motor 233, the driving wheel 237 drives the welding wire therein to move, thereby achieving the purpose of conveying the welding wire.

[0039] In order to accurately and smoothly convey the welding wire, the pressure between the pressure wheel 238 and the driving wheel 237 is required to be moderate. In this embodiment, the pressure wheel 238 is installed on a rotating arm 239, one end of the rotating arm 239 is installed on the fixed base plate 231 through a rotating shaft 2310, and the other end of the rotating arm 239 is installed on the fixed base plate 231 through an adjusting nut 2311. By adjusting the adjusting nut 2311, the distance between the pressure wheel 238 and the driving wheel 237 can be adjusted, thereby adjusting the appropriate tightness; in order to maintain the stability of the wire supply and prevent the wire from shaking, a mounting seat 2312 is respectively provided on the outer side of the two driving wheels 237 and between the two driving wheels 237, each mounting seat 2312 is provided with a wire feeding core tube 2313 for the welding wire to pass through, and a guide block 2314 is provided on the outside of the mounting seat outside the two driving wheels 237.

[0040] In this embodiment, the spot welding adjustment assembly 32 includes an XYZ base plate 321 and an XYZ assembly mounted on the XYZ base plate 321. A free guide arm 322 that can adjust the extension direction is connected to the XYZ assembly. The free guide arm 322 has a connecting end 3221 and a free end 3222. The connecting end 3221 of the free guide arm 322 is movably connected to the XYZ assembly. The free end 3222 of the free guide arm 322 is connected to a cylinder fixing seat 323. A spot welding cylinder 324 is connected to the cylinder fixing seat 323. A guide fixing block 325 is fixed to the movable part of the spot welding cylinder 324. A guide pin 326 is installed on the guide fixing block 325. The spot welding cylinder 324 extends out during welding, so that the welding wire exposed at the front end of the guide pin 326 extends to the welding position and reaches the heating position of the welding heating device 4 at the same time, so as to achieve welding.

[0041] In this embodiment, the XYZ assembly includes an XY slide 327 installed on the XYZ base 321 plate and a Z slide 328 installed on the XY slide 327. A Z-direction plate 329 is provided on the side of the Z slide 328, and a connecting end mounting column 3210 perpendicular to the Z-direction plate 329 is provided on the Z-direction plate 329; the free guide arm 322 is a multi-section movable structure, and the connecting end 3221 of the free guide arm 322 can be rotatably mounted on the connecting end mounting column 3210, and a free end mounting column 3211 is provided on the cylinder fixing seat 323, and the free end 3222 of the free guide arm 322 can be rotatably mounted on the free end mounting column 3211.

[0042] In order to enable the welding heating device 4 to adapt to the heating needs of different welding points, in this embodiment, the welding heating device 4 on each side has a slide mounting plate 43, and the high-frequency welding head 41 is mounted on the XYZ axis slide mounting plate 43 through a slide 44. By adjusting the slide 44, the position of the end of the heating wire 42 of the welding heating device 4 can be adjusted to meet the adjustment requirements of the welding position. In order to suppress vibration and reduce noise, the slide mounting plate 43 can be fixed with a pressing block 45.

[0043] In actual production, welding work often needs to be carried out in a sealed environment due to high temperature, waste gas generation and other reasons. Therefore, a second embodiment is further proposed based on the above first embodiment.

[0044] like Figure 8 Combination Figure 7As shown, in the second embodiment, the jig base 101 and the slide mounting plate 43 are both installed on a horizontal work surface 5, a frame 6 is provided below the work surface 5, a welding delivery group bracket 7 is provided on the work surface 5, the welding delivery group bracket 7 includes side brackets 71 vertically standing on the work surface on both sides and an upper bracket 72 horizontally installed between the tops of the side brackets on both sides, and the welding wire conveying assembly 23 includes a fixed bottom plate 231 fixed to the side of the upper bracket 72.

[0045] In this embodiment, the welding group bracket 7 is provided with infrared sensing devices 8 located on both sides of the welding fixture. The infrared sensing device 8 on each side includes a movable arm 81 connected to the welding group bracket and extending toward the welding position, and a sensing component 82 installed at the free end of the movable arm.

[0046] In this embodiment, a waste gas suction pipe 8 is provided on the work surface 5, and the waste gas suction pipe 9 extends from the top of the weldment fixture to the bottom of the work surface 5. The waste gas generated during welding is sucked and processed through the waste gas suction pipe 36. A cooling assembly 10 is also provided next to the welding fixture 1. The cooling assembly 10 includes a cooling pipe fixing seat 1001 and a cooling pipe 1002 installed on the cooling pipe fixing seat. The cooling pipe 1002 can be cooled by nitrogen. The electric control box 11 is installed on the welding group bracket 7 to control the coordinated work of the whole machine.

[0047] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Intelligent wire feeding welding equipment for glasses, characterized by: include, Welding jig: used to carry and fix the frame and nose bridge of the glasses to be welded; Welding wire feeding device: It is arranged on both sides of the welding fixture, used to install the welding wire coil and output the welding wire from the welding wire coil, including a welding wire coil mounting bracket and a welding wire conveying assembly located next to the welding wire coil mounting bracket; Spot welding device: It is arranged on both sides of the welding wire fixture, and is used to pull the welding wire delivered by the welding wire feeding device to the welding position and perform spot welding, including a spot welding assembly for pulling the welding wire and performing spot welding, and a spot welding adjustment assembly for carrying the spot welding assembly and adjusting the spot welding position; Welding heating device: installed on both sides of the welding fixture, used to heat the welding wire at the spot welding position, including a high-frequency welding head and a heating wire connected to the high-frequency welding head and extending to the welding position; The spot welding device includes an XYZ base plate and an XYZ component installed on the XYZ base plate. The XYZ component is connected to a free guide arm whose extension direction can be adjusted. The free guide arm has a connecting end and a free end. The connecting end of the free guide arm is movably connected to the XYZ component. The free end of the free guide arm is connected to a cylinder fixing seat. A spot welding cylinder is connected to the cylinder fixing seat. A guide fixing block is fixed on the movable part of the spot welding cylinder, and a guide pin is installed on the guide fixing block.

2. The glasses intelligent welding wire feeding device according to claim 1, characterized in that: The welding jig includes a jig base located at the bottom, a jig support base located on the jig base, and a frame mold corresponding to the welded frame installed on the upper part of the jig support base; a clamp is provided on the frame mold corresponding to the position of each frame, and a middle pressure plate is provided on the frame mold corresponding to the bridge of the nose, and the middle pressure plate is connected to a clamping cylinder installed on the jig base.

3. The glasses intelligent welding wire feeding device as claimed in claim 2, characterized in that: The welding wire conveying assembly on each side includes a fixed bottom plate, a transmission box is provided on the fixed bottom plate, and a servo motor is provided on the back of the transmission box; a driving wheel connected to the servo motor and two driven wheels connected to the driving wheel are provided in the transmission box; a driving wheel connected to the driven wheel shaft and a pressure wheel located above the driving wheel are provided on the outer side of the front cover of the transmission box; the welding wire coil mounting bracket is fixed on the fixed bottom plate.

4. The glasses intelligent welding wire feeding device as claimed in claim 3, characterized in that: The pressure wheel is installed on a rotating arm, one end of the rotating arm is installed on the fixed base plate through a rotating shaft, and the other end of the rotating arm is installed on the fixed base plate through an adjusting nut; a mounting seat is respectively provided on the outer side of the two driving wheels and between the two driving wheels, each mounting seat is provided with a wire feeding core tube for the welding wire to pass through, and a guide block is provided on the outside of the mounting seat outside the two driving wheels.

5. The glasses intelligent welding wire feeding device as claimed in claim 4, characterized in that: The XYZ assembly includes an XY slide mounted on the XYZ base plate and a Z slide mounted on the XY slide, a Z-direction plate is provided on the side of the Z slide, and a connecting end mounting column perpendicular to the Z-direction plate is provided on the Z-direction plate; the free guide arm is a multi-section movable structure, the connecting end of the free guide arm is rotatably mounted on the connecting end mounting column, a free end mounting column is provided on the cylinder fixing seat, and the free end of the free guide arm is rotatably mounted on the free end mounting column.

6. The glasses intelligent welding wire feeding device as claimed in claim 5, characterized in that: The welding heating device on each side has a slide mounting plate respectively, and the high-frequency welding head is mounted on the XYZ axis slide mounting plate through a slide.

7. The glasses intelligent welding wire feeding device as claimed in claim 6, characterized in that: The jig base and the slide mounting plate are both installed on a horizontal work surface, a frame is provided under the work surface, and a welding delivery group bracket is provided on the work surface. The welding delivery group bracket includes side brackets vertically standing on the work surface on both sides and an upper bracket horizontally installed between the tops of the side brackets on both sides. The fixed bottom plates of the welding wire delivery devices on both sides are vertically fixed to the sides of the upper bracket.

8. The glasses intelligent welding wire feeding device as claimed in claim 7, characterized in that: The welding group bracket is provided with infrared sensing devices located on both sides of the welding fixture. The infrared sensing device on each side includes a movable arm connected to the welding group bracket and extending toward the welding position, and a sensing component installed at the free end of the movable arm.

9. The glasses intelligent welding wire feeding device as claimed in claim 8, characterized in that: The workbench is provided with an exhaust gas suction pipe extending from above the welding fixture to below the workbench. A cooling assembly is also provided next to the welding fixture. The cooling assembly includes a cooling pipe fixing seat and a cooling pipe installed on the cooling pipe fixing seat.

Images