Laser Welding Head Structure, Welding Device for Glass Substrate Carrier, and Welding Process

Abstract

The present invention belongs to the technical field of welding, and particularly relates to a device for laser welding, and more particularly to a laser welding head structure, a welding device for a glass substrate carrier, and a welding process. Among them, the laser welding head structure includes: a welding torch body and a wire guiding assembly. Among them, the wire guiding assembly includes: a rotating bracket and a telescopic wire guiding tube. One end of the telescopic wire guiding tube passes through the rotating bracket and is connected to the rotating bracket, and the other end is arranged towards the nozzle of the welding torch body. After each welding is completed, by extending the telescopic wire guiding tube, the welding slag remaining on the surface of the welding wire is removed, ensuring that the thickness of the welding wire is consistent, and thus ensuring the stability of the weld seam. After the welding slag is removed, the welding wire is covered by the telescopic wire guiding tube to prevent oxidation on the surface of the welding wire, ensuring the consistency of the material of the melted welding wire during subsequent welding, and thus ensuring the stability of the weld seam during the welding of the glass substrate carrier and reducing scratches on the glass substrate.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, and specifically relates to a welding device, and more particularly to a laser welding head structure, a welding device for a glass substrate carrier, and a welding process. Background Art

[0002] The plasma-detected handheld laser welding gun is a device that combines laser welding technology and plasma monitoring technology. It is widely used in the field of precision welding, especially in the welding of glass substrate carriers. Glass substrates have high requirements for welding technology due to their high light transmittance, brittleness and surface finish requirements. During the welding process, it is necessary to ensure that the weld is uniform and free of oxidation, and to avoid residual welding slag that may cause scratches on the substrate, which poses a severe challenge to the stability and accuracy of the welding equipment.

[0003] However, in the prior art, when welding glass substrate carriers, handheld laser welding guns that have just started plasma detection often have unstable welds. Specifically, the melting amount of the welding wire fluctuates in the initial welding stage, the weld structure is coarse, and the grain size is uneven, resulting in a decrease in the mechanical properties of the welding part (such as insufficient tensile strength). At the same time, the spattered welding slag is easy to adhere to the surface of the welding wire, causing the end of the welding wire to be uneven in thickness after solidification. In subsequent welding, the uneven thickness of the welding wire will lead to inconsistent melting amount, aggravating the irregularity of the weld morphology. In addition, the welding wire is easily oxidized when exposed to the air, and the oxide layer forms inclusions during welding, further weakening the strength of the weld. For glass substrates, the above problems are particularly prominent - uneven welds will produce local stress concentration and increase the risk of substrate cracking; and residual welding slag or detachment of the oxide layer may scratch the brittle glass surface, seriously affecting the product yield. The prior art usually adopts the method of cutting off the contaminated welding wire, but in the high-frequency intermittent welding of glass substrate carriers, this will lead to a surge in the amount of welding wire waste, significantly raising production costs.

[0004] Therefore, how to effectively remove welding slag, maintain welding wire consistency and prevent oxidation without damaging the glass substrate, so as to ensure the stability of the weld during the start and stop stages of welding is a technical problem that needs to be solved urgently.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a laser welding head structure, a welding device for a glass substrate carrier, and a welding process.

[0007] In a first aspect, an embodiment of the present disclosure provides a laser welding head structure, comprising:

[0008] Welding gun body;

[0009] A wire guiding assembly is arranged below the welding torch body;

[0010] Wherein, the wire guiding assembly includes:

[0011] A rotating bracket which is rotatably connected to the welding torch body;

[0012] A telescopic wire guiding tube, one end of which passes through the rotating bracket and is connected to the rotating bracket, and the other end is arranged towards the nozzle of the welding torch body;

[0013] During welding, the telescopic wire guiding tube is in a contracted state to expose the welding wire; and after welding is completed, the telescopic wire guiding tube is in an extended state to remove the welding slag remaining on the surface of the welding wire, and at the same time, cover the welding wire.

[0014] In an optional embodiment, the telescopic wire guiding tube includes:

[0015] A telescopic part, a fixed part and a resetting member;

[0016] The fixed part is arranged to penetrate through the rotating bracket and is fixedly connected to the rotating bracket;

[0017] The telescopic part is sleeved on the fixed part and is elastically connected to the fixed part through the resetting member.

[0018] In an optional embodiment, the resetting member is a reset spring;

[0019] The telescopic part is elastically connected to the fixed part through the reset spring;

[0020] The welding torch body is further provided with a clamping member;

[0021] Before welding, press the telescopic part and compress the reset spring, and engage the top of the telescopic part with the clamping member to complete the fixation of the telescopic part;

[0022] After welding is completed, release the engagement between the telescopic part and the clamping member, and the telescopic part quickly extends under the action of the reset spring to remove the welding slag remaining on the surface of the welding wire.

[0023] In an optional embodiment, an arc-shaped limiting block extends downward from the bottom of the clamping member;

[0024] A limiting platform is arranged at the top of the telescopic part;

[0025] Before welding, press the telescopic part to engage the limiting platform of the telescopic part with the arc-shaped limiting block;

[0026] After welding is completed, rotate the rotating bracket so that the limiting platform of the telescopic part is disengaged from the arc-shaped limiting block.

[0027] In an alternative embodiment, a spiral chute is provided on the inner wall of the telescopic part;

[0028] A slider matching with the spiral chute is provided on the outer wall of the fixed part;

[0029] After welding is completed, the telescopic part extends out in a rotating manner under the drive of the reset member to remove the welding slag remaining on the surface of the welding wire.

[0030] In an alternative embodiment, the reset member includes a fixed ring, a rotating ring and a reset spring;

[0031] The fixed ring is sleeved on the outer wall of the fixed part and is fixedly connected to the fixed part;

[0032] The rotating ring is sleeved on the outer wall of the telescopic part and is rotatably arranged in the card slot of the telescopic part;

[0033] Both ends of the reset spring are respectively arranged on the fixed ring and the rotating ring.

[0034] In an alternative embodiment, the top of the telescopic part is conical;

[0035] And a scraping surface is provided at the top of the telescopic part.

[0036] In an alternative embodiment, the telescopic wire guide tube includes:

[0037] A telescopic part, a fixed part and a reset spring;

[0038] The telescopic part is sleeved on the fixed part, and a spiral chute is arranged inside the telescopic part;

[0039] A slider matching with the spiral chute is provided on the outer wall of the fixed part, that is, under the push of the reset spring, the telescopic part extends out in a rotating manner;

[0040] After welding is completed, the telescopic part extends out in a rotating manner under the drive of the reset spring to remove the welding slag remaining on the surface of the welding wire.

[0041] In a second aspect, an embodiment of the present disclosure further provides a welding device for a glass substrate carrier, which includes the laser welding head structure as described above.

[0042] In a third aspect, an embodiment of the present disclosure further provides a welding process for a glass substrate carrier applied to the laser welding head structure as described above, and the welding process includes:

[0043] Step S1, compress the telescopic wire guide tube to expose the welding wire.

[0044] Step S2, adjust the position of the rotating bracket so that the telescopic wire guide tube is in a compressed state, and align the end of the welding wire with the nozzle of the welding torch body.

[0045] Step S3, start welding the glass substrate carrier.

[0046] Step S4, after welding is completed, adjust the position of the rotating bracket to release the compression state of the telescopic wire guide tube.

[0047] Step S5, repeatedly stretch and contract the compressed telescopic wire guide tube until the welding slag remaining on the surface of the welding wire is completely removed.

[0048] Step S6, completely cover the welding wire with the telescopic wire guide tube to prevent the surface of the welding wire from being oxidized.

[0049] In an alternative embodiment, in step S5, the telescopic wire guide tube pops out in a rotating manner to remove the welding slag remaining on the surface of the welding wire.

[0050] The beneficial effects of the present invention are as follows: The structure of the present laser welding head, the welding device for the glass substrate carrier, and the welding process are provided with a telescopic wire guide tube below the welding torch body. After each welding is completed, by extending the telescopic wire guide tube, the welding slag remaining on the surface of the welding wire is removed, ensuring that the thickness of the welding wire is consistent, and thus ensuring the stability of the weld seam. After the welding slag is removed, the welding wire is covered by the telescopic wire guide tube to prevent the surface of the welding wire from being oxidized, ensuring the consistency of the material of the melted welding wire during subsequent welding, and thus ensuring the stability of the weld seam during the welding of the glass substrate carrier and reducing scratches on the glass substrate.

[0051] Other features and advantages of the present invention will be described in the following specification, and, in part, will become apparent from the specification or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0052] To make the above objectives, features, and advantages of the present invention more clearly understood, specific preferred embodiments are hereby given, and in conjunction with the accompanying drawings, the following detailed description is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0054] Figure 1 Schematic structural diagram of the laser welding head structure provided by the embodiment of the present disclosure;

[0055] Figure 2 Partial structural schematic diagram of the laser welding head structure provided by the embodiment of the present disclosure;

[0056] Figure 3 Cross-sectional view of a partial structure of the laser welding head structure provided by the embodiment of the present disclosure;

[0057] Figure 4 Cross-sectional view of the telescopic part provided by the embodiment of the present disclosure;

[0058] Figure 5 Flow chart of the welding process of the glass substrate carrier applying the laser welding head structure provided by the embodiment of the present disclosure.

[0059] In the figure: 100, welding torch body; 110, nozzle; 120, clamping part; 121, arc-shaped limiting block; 130, welding torch handle; 140, connecting rod; 200, wire guiding assembly; 210, rotating bracket; 220, telescopic wire tube; 221, telescopic part; 2211, limiting platform; 2212, spiral chute; 2213, scraping surface; 2214, card slot; 222, fixing part; 2221, slider; 223, reset part; 2231, reset spring; 2232, fixing ring; 2233, rotating ring. Specific embodiments

[0060] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0061] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component can be directly formed on the second component, or a third component can be inserted between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0062] It has been found that during the operation of the welding torch in the prior art, welding slag splashes and adheres to the welding wire in the wire guide tube. After the welding slag solidifies on the welding wire, the thickness of the end of the welding wire becomes uneven. The uneven welding wire will cause different melting amounts of the welding wire at the beginning of welding, resulting in unstable weld seams. At the same time, the part of the welding wire exposed from the wire guide tube is always in contact with the air, which will cause oxidation of the surface of the welding wire, resulting in partial changes in the properties of the welding wire. During subsequent welding, the properties of the melted welding wire will be inconsistent, further affecting the stability of welding. For glass substrates, the above problems are particularly prominent - uneven weld seams will cause local stress concentration, increasing the risk of substrate cracking; while the remaining welding slag or the peeling of the oxide layer may scratch the brittle glass surface, seriously affecting the product yield. The prior art usually adopts the method of cutting off the contaminated welding wire, but in the high-frequency intermittent welding of the glass substrate carrier, this leads to a sharp increase in the waste amount of the welding wire, significantly increasing the production cost.

[0063] Based on the above research, the embodiments of the present disclosure provide a laser welding head structure, a welding device for a glass substrate carrier, and a welding process. By designing a simple mechanical structure to remove the welding slag on the surface of the welding wire, and at the same time, covering the welding wire to reduce the contact between the surface of the welding wire and the air, delaying the oxidation of the welding wire, thereby ensuring the stability of the weld seam during the welding of the glass substrate carrier and reducing the scratching of the glass substrate.

[0064] Regarding the defects existing in the above solutions, they are all the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article for the above problems should all be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0065] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0066] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0067] Please refer to Figure 1 and Figure 2 , the embodiments of the present disclosure provide a laser welding head structure, including the following structures:

[0068] The welding torch body 100 includes a welding torch handle 130, a connecting rod 140, and a nozzle 110. A laser transmission path is provided inside the welding torch handle 130, so that the laser passes through the connecting rod 140 and sprays out from the nozzle 110.

[0069] The wire guiding assembly 200 is disposed below the welding torch body 100. The wire guiding assembly 200 is connected to an external wire feeding assembly, so as to continuously feed a welding wire to the wire guiding assembly 200, and guide the welding wire through the wire guiding assembly 200 to send it below the nozzle 110.

[0070] Wherein, the wire guiding assembly 200 includes: a rotating bracket 210, which is rotatably connected to the welding torch body 100. By providing the rotating bracket 210, the position of welding wires with different thicknesses is adjusted to meet the welding requirements.

[0071] A telescopic wire guiding tube 220, one end of which passes through the rotating bracket 210 and is connected to the rotating bracket 210, and the other end is disposed towards the nozzle 110 of the welding torch body 100.

[0072] The fixed-length wire guiding tube in the related art is replaced with the telescopic wire guiding tube 220. During welding, the telescopic wire guiding tube 220 is in a contracted state to expose the welding wire; and after welding is completed, the telescopic wire guiding tube 220 is in an extended state to remove the welding slag remaining on the surface of the welding wire, and at the same time, cover the welding wire.

[0073] By providing the telescopic wire guiding tube 220 below the welding torch body 100, after each welding is completed, the telescopic wire guiding tube 220 is extended to remove the welding slag remaining on the surface of the welding wire, ensuring that the thickness of the welding wire is consistent. During subsequent welding, the welding wire with consistent thickness will ensure that the melting amount of the welding wire at each welding position is consistent, thereby ensuring the stability of the weld seam. After the welding slag is removed, the welding wire is covered by the telescopic wire guiding tube 220 to avoid oxidation on the surface of the welding wire, ensuring the consistency of the material of the melted welding wire during subsequent welding, thereby ensuring the stability of the weld seam during the welding of the glass substrate carrier and reducing scratches on the glass substrate.

[0074] Please refer to Figure 2 and Figure 3 The telescopic wire guiding tube 220 includes a telescopic part 221, a fixed part 222 and a reset part 223; after the fixed part 222 penetrates through the rotating bracket 210, it is fixedly connected to the rotating bracket 210; the telescopic part 221 is sleeved on the fixed part 222 and is elastically connected to the fixed part 222 through the reset part 223. In other embodiments, a structure in which the fixed part 222 is sleeved on the telescopic part 221 can be selected as long as the telescopic function of the telescopic wire guiding tube 220 can be realized. The reset part 223 is made of a material with certain elasticity, and a reset spring 2231, a reed, and other structures can be adopted.

[0075] In a preferred embodiment, the reset member 223 is a reset spring 2231; the telescopic portion 221 and the fixed portion 222 are elastically connected by the reset spring 2231; the welding torch body 100 is further provided with a clamping member 120;

[0076] Before welding, press the telescopic portion 221 and compress the reset spring 2231, and clamp the top of the telescopic portion 221 with the clamping member 120 to complete the fixation of the telescopic portion 221; after welding, release the clamping of the telescopic portion 221 and the clamping member 120, and the telescopic portion 221 quickly extends under the action of the reset spring 2231 to remove the welding slag remaining on the surface of the welding wire. Through the reset spring 2231, the extension of the telescopic portion 221 is accelerated, and the scraping force of the telescopic portion 221 is increased, so as to facilitate the removal of the welding slag on the surface of the welding wire.

[0077] Please continue to participate Figure 1 and Figure 2 , an arc-shaped limiting block 121 extends downward from the bottom of the clamping member 120; a limiting platform 2211 is arranged at the top of the telescopic portion 221.

[0078] Before welding, press the telescopic portion 221 so that the limiting platform 2211 of the telescopic portion 221 is clamped with the arc-shaped limiting block 121; after welding, rotate the rotating bracket 210 so that the limiting platform 2211 of the telescopic portion 221 is released from being clamped with the arc-shaped limiting block 121.

[0079] It should be noted that the size of the clamping member 120 is selected according to the thickness of the welding wire, that is, each time the welding wire moves to the required position, the limiting platform 2211 of the telescopic portion 221 at this time just clamps with the arc-shaped limiting block 121 of the clamping member 120 to complete the limitation of the telescopic portion 221, so as to prevent the telescopic portion 221 from rebounding during welding.

[0080] Please refer to Figure 3 and Figure 4 , a spiral chute 2212 is arranged on the inner wall of the telescopic portion 221; a slider 2221 that cooperates with the spiral chute 2212 is arranged on the outer wall of the fixed portion 222.

[0081] It should be noted that the pitch of the spiral chute 2212 is sufficient to allow the slider 2221 to slide within the spiral chute 2212.

[0082] After welding, the telescopic portion 221 extends out in a rotating manner under the drive of the reset member 223 to remove the welding slag remaining on the surface of the welding wire. When the welding slag is reflected between the telescopic portion 221 and the welding wire, it is easy to bond the welding wire with the telescopic portion 221. By adopting a rotating manner and ejecting the telescopic portion 221, the bonded welding wire and the telescopic portion 221 can be quickly separated.

[0083] Please refer to Figure 3 and Figure 4 As shown, the reset member 223 includes a fixed ring 2232, a rotating ring 2233 and a reset spring 2231; the fixed ring 2232 is sleeved on the outer wall of the fixed portion 222 and fixedly connected to the fixed portion 222; the rotating ring 2233 is sleeved on the outer wall of the telescopic portion 221 and rotatably arranged in the card slot 2214 of the telescopic portion 221; both ends of the reset spring 2231 are respectively arranged on the fixed ring 2232 and the rotating ring 2233.

[0084] By sleeving the rotating ring 2233 in the card slot 2214 of the telescopic portion 221, when the telescopic portion 221 rotates, the rotating ring 2233 will not rotate accordingly.

[0085] In order to facilitate the scraping of the slag on the surface of the welding wire, in some embodiments, the top of the telescopic portion 221 is conical; and a scraping surface 2213 is provided at the top of the telescopic portion 221. By providing the scraping surface 2213, the ability of the telescopic portion 221 to remove the slag on the surface of the welding wire when extending is improved.

[0086] In other embodiments, the telescopic wire guide tube 220 includes: a telescopic portion 221, a fixed portion 222 and a reset spring 2231; the telescopic portion 221 is sleeved on the fixed portion 222, and a spiral chute 2212 is arranged inside the telescopic portion 221; a slider 2221 matching with the spiral chute 2212 is arranged on the outer wall of the fixed portion 222, that is, under the push of the reset spring 2231, the telescopic portion 221 extends out in a rotating manner; after welding is completed, the telescopic portion 221 extends out in a rotating manner under the drive of the reset spring 2231 to remove the slag remaining on the surface of the welding wire.

[0087] At least one embodiment also provides a welding device for a glass substrate carrier applied to the laser welding head structure as described above. By using the above laser welding head structure for the glass substrate carrier, after each welding is completed, by extending the telescopic wire guide tube, the slag remaining on the surface of the welding wire is removed, ensuring the uniform thickness of the welding wire, and thus ensuring the stability of the weld seam. After the slag is removed, the welding wire is covered by the telescopic wire guide tube to avoid oxidation on the surface of the welding wire, ensuring the consistency of the material of the melted welding wire during subsequent welding, and thus ensuring the stability of the weld seam during the welding of the glass substrate carrier and reducing scratches on the glass substrate.

[0088] Please refer to Figure 5, at least one embodiment further provides a welding process for a glass substrate carrier applied to the laser welding head structure as described above. By providing a telescopic wire guide tube 220 below the welding torch body 100, after each welding is completed, the telescopic wire guide tube 220 is extended to remove the welding slag remaining on the surface of the welding wire, ensuring that the thickness of the welding wire is consistent. At the same time, to avoid the influence on the next welding after the welding slag melts again. After the welding slag is removed, the welding wire is covered by the telescopic wire guide tube 220 to prevent oxidation on the surface of the welding wire, thereby ensuring the stability of the weld seam during the welding of the glass substrate carrier and reducing scratches on the glass substrate.

[0089] Specifically, the welding process for the glass substrate carrier includes the following steps:

[0090] Step S1, compress the telescopic wire guide tube 220 to expose the welding wire.

[0091] Step S2, adjust the position of the rotating bracket 210 so that the telescopic wire guide tube 220 is in a compressed state, and align the end of the welding wire with the nozzle 110 of the welding torch body 100.

[0092] Step S3, start welding the glass substrate carrier.

[0093] Step S4, after welding is completed, adjust the position of the rotating bracket 210 to release the compressed state of the telescopic wire guide tube 220.

[0094] Step S5, repeatedly extend and retract the compressed telescopic wire guide tube 220 until the welding slag remaining on the surface of the welding wire is completely removed.

[0095] Among them, in order to avoid adhesion between the welding wire and the telescopic part 221, in this embodiment, the telescopic wire guide tube 220 pops out in a rotating manner to remove the welding slag remaining on the surface of the welding wire.

[0096] Step S6, completely cover the welding wire with the telescopic wire guide tube 220 to prevent oxidation on the surface of the welding wire.

[0097] In summary, the present invention provides a laser welding head structure, a welding device for a glass substrate carrier, and a welding process. The laser welding head structure includes: a welding torch body 100; a wire guiding assembly 200 disposed below the welding torch body 100. The wire guiding assembly 200 includes: a rotating bracket 210 rotatably connected to the welding torch body 100; a telescopic wire guiding tube 220, one end of which passes through the rotating bracket 210 and is connected to the rotating bracket 210, and the other end is disposed towards the nozzle 110 of the welding torch body 100. During welding, the telescopic wire guiding tube 220 is in a contracted state to expose the welding wire. After welding is completed, the telescopic wire guiding tube 220 is in an extended state to remove the welding slag remaining on the surface of the welding wire, and at the same time, cover the welding wire. By providing a telescopic wire guiding tube below the welding torch body, after each welding is completed, the telescopic wire guiding tube is extended to remove the welding slag remaining on the surface of the welding wire, ensuring that the thickness of the welding wire is consistent. During subsequent welding, the welding wire with a consistent thickness ensures that the melting amount of the welding wire at each welding position is consistent, thereby ensuring the stability of the weld seam. After the welding slag is removed, the welding wire is covered by the telescopic wire guiding tube to prevent oxidation of the surface of the welding wire, ensuring the consistency of the material of the melted welding wire during subsequent welding, thereby ensuring the stability of the weld seam during the welding of the glass substrate carrier and reducing scratches on the glass substrate.

[0098] Enlightened by the above ideal embodiments of the present invention, through the above description, relevant staff can make various changes and modifications within the scope not deviating from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A laser welding head structure, characterized in that, Comprising: A welding torch body (100); A wire guiding assembly (200), which is arranged below the welding torch body (100); Wherein, the wire guiding assembly (200) comprises: A rotating bracket (210), which is rotatably connected to the welding torch body (100); A telescopic wire conduit (220), one end of which passes through the rotating bracket (210) and is connected to the rotating bracket (210), and the other end is arranged towards the nozzle (110) of the welding torch body (100); During welding, the telescopic wire conduit (220) is in a contracted state to expose the welding wire; and after welding is completed, the telescopic wire conduit (220) is in an extended state to remove the welding slag remaining on the surface of the welding wire, and at the same time, cover the welding wire; The telescopic wire conduit (220) comprises: A telescopic part (221), a fixed part (222) and a reset part (223); The fixed part (222) is arranged to penetrate through the rotating bracket (210) and is fixedly connected to the rotating bracket (210); The telescopic part (221) is sleeved on the fixed part (222) and is elastically connected to the fixed part (222) through the reset part (223); The reset part (223) is a reset spring (2231); The telescopic part (221) is elastically connected to the fixed part (222) through the reset spring (2231); The welding torch body (100) is further provided with a clamping part (120); Before welding, press the telescopic part (221) and compress the reset spring (2231), and clamp the top of the telescopic part (221) with the clamping part (120) to complete the fixation of the telescopic part (221); After welding is completed, release the clamping between the telescopic part (221) and the clamping part (120), and the telescopic part (221) quickly extends under the action of the reset spring (2231) to remove the welding slag remaining on the surface of the welding wire.

2. The laser welding head structure according to claim 1, wherein An arc-shaped limiting block (121) extends downward from the bottom of the clamping part (120); A limiting platform (2211) is arranged at the top of the telescopic part (221); Before welding, press the telescopic part (221) so that the limiting platform (2211) of the telescopic part (221) is clamped with the arc-shaped limiting block (121); After welding is completed, rotate the rotating bracket (210) so that the limiting platform (2211) of the telescopic part (221) is released from being clamped with the arc-shaped limiting block (121).

3. The laser welding head structure according to claim 1, wherein A spiral chute (2212) is arranged on the inner wall of the telescopic part (221); A slider (2221) matched with the spiral chute (2212) is arranged on the outer wall of the fixed part (222); After welding is completed, the telescopic part (221) extends out in a rotating manner under the drive of the reset part (223) to remove the welding slag remaining on the surface of the welding wire.

4. The laser welding head structure according to claim 3, wherein The reset member (223) includes a fixed ring (2232), a rotating ring (2233), and a reset spring (2231); The fixed ring (2232) is sleeved on the outer wall of the fixed part (222) and is fixedly connected to the fixed part (222); The rotating ring (2233) is sleeved on the outer wall of the telescopic part (221) and is rotatably arranged in the clamping groove (2214) of the telescopic part (221); Both ends of the reset spring (2231) are respectively arranged on the fixed ring (2232) and the rotating ring (2233).

5. The laser welding head structure according to claim 1, characterized in that The top of the telescopic part (221) is conical; And a scraping surface (2213) is arranged at the top of the telescopic part (221).

6. The laser welding head structure according to claim 1, characterized in that The telescopic wire guide tube (220) includes: A telescopic part (221), a fixed part (222), and a reset spring (2231); The telescopic part (221) is sleeved on the fixed part (222), and a spiral chute (2212) is arranged inside the telescopic part (221); A slider (2221) matching with the spiral chute (2212) is arranged on the outer wall of the fixed part (222), that is, under the push of the reset spring (2231), the telescopic part (221) extends out in a rotating manner; After welding is completed, the telescopic part (221) extends out in a rotating manner under the drive of the reset spring (2231) to remove the welding slag remaining on the surface of the welding wire.

7. A welding process for a glass substrate carrier applied to the laser welding head structure as described in claim 1, characterized in that, The welding process includes: Step S1, compress the telescopic wire guide tube (220) to expose the welding wire; Step S2, adjust the position of the rotating bracket (210) to make the telescopic wire guide tube (220) in a compressed state, and align the end of the welding wire with the nozzle (110) of the welding torch body (100); Step S3, start welding the glass substrate carrier; Step S4, after welding is completed, adjust the position of the rotating bracket (210) to release the compression state of the telescopic wire guide tube (220); Step S5, repeatedly extend and retract the compressed telescopic wire guide tube (220) until the welding slag remaining on the surface of the welding wire is completely removed; Step S6, completely cover the welding wire through the telescopic wire guide tube (220) to prevent the surface of the welding wire from being oxidized.

8. The welding process of the glass substrate carrier according to claim 7, characterized in that In the step S5, the telescopic wire guide tube (220) pops out in a rotating manner to remove the welding slag remaining on the surface of the welding wire.

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