Welding equipment and welding method

Abstract

The welding equipment comprises a welding mechanism, a welding driving mechanism and a to-be-welded object driving mechanism, the welding mechanism comprises a welding gun with a welding head, and the welding head faces the inner wall side, where a connecting opening is located, of a second to-be-welded object when the welding gun stretches into the second to-be-welded object; the welding driving mechanism is connected with the welding mechanism so as to be used for driving the welding mechanism to move in the first direction and driving the welding mechanism to move in the second direction perpendicular to the first direction; the to-be-welded object driving mechanism is used for driving the second to-be-welded object provided with the first to-be-welded object to move, and the moving path is matched with the shape of the internal welding seam. The welding equipment can perfectly solve the welding problem of an internal welding seam when an inner hole of a welding object of the first to-be-welded object is a small hole, the welding efficiency and quality of a product are greatly improved, the welding seam is smooth, the welding precision is greatly improved, and the probability of welding failure is reduced; the invention further provides a welding method.

Description

Technical Field

[0001] The invention relates to the field of welding, and in particular to a welding device and a welding method. Background Art

[0002] In the production of a barrel for aging red wine, the barrel is usually composed of an upper barrel and a lower barrel, which are assembled and welded together, and a band barrel hoop is provided at the joint of the upper and lower barrel halves, and a flange seat is provided at the joint of the band barrel hoop. The flange seat has an inner hole for installing a wine spear for drawing wine. Since the inner hole of the flange seat is usually very small, generally 47 mm, the arm of a manual hand-held welding gun cannot penetrate into the interior of the barrel to weld and seal between the flange seat and the inner wall of the barrel, and welding observation cannot be performed. If a robot holding a welding gun is used for welding, the same problem also exists, and welding cannot be performed. Therefore, the prior art usually only performs external welding and sealing, but it will have a certain impact on the overall sealing effect of the barrel. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a welding device, which can perfectly solve the welding problem of the internal welding seam formed between the first object to be welded and the second object to be welded when the inner hole of the welding object of the first object to be welded is a small hole, and greatly improves the welding efficiency and quality of the product, the smoothness of the weld, greatly improves the welding accuracy, and reduces the probability of welding failure; the present invention also provides a welding method.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A welding device, used for welding an internal welding seam formed at a connection between a first object to be welded and a connection opening of a second object to be welded, comprising:

[0006] A welding mechanism, comprising a welding gun having a welding head, wherein one end of the welding gun is capable of extending through an inner hole of a first object to be welded into a second object to be welded, and the welding head is arranged such that the connection opening side faces the second object to be welded when the welding gun extends through the inner hole of the welded object into the second object to be welded;

[0007] A welding drive mechanism connected to the welding mechanism to drive the welding mechanism to move along a first direction and to drive the welding mechanism to move along a second direction perpendicular to the first direction;

[0008] and a welding object driving mechanism, which is used to drive the second welding object mounted with the first welding object to move, and the movement path of the second welding object mounted with the first welding object driven by the welding object driving mechanism matches the shape of the internal welding seam. For example, if the internal welding seam is circular, the movement path of the second welding object mounted with the first welding object driven by the welding object driving mechanism is circular, i.e., rotating; if the internal welding seam is square, the movement path of the second welding object mounted with the first welding object driven by the welding object driving mechanism is square;

[0009] Alternatively, the object-to-be-welded driving mechanism drives the second object to be welded with the first object to be welded to move, and the welding driving mechanism drives the welding mechanism to move so that the path of the welding head relative to the second object to be welded matches the shape of the internal weld seam. For example, if the internal weld seam is a square, the welding driving mechanism drives the welding mechanism to move to match one side of the internal weld seam, and the object-to-be-welded driving mechanism drives the second object to be welded with the first object to be welded to rotate, so that the welding head can align with the adjacent sides in the internal weld seam and move, and the cycle is repeated to achieve a trajectory that matches the shape of the internal weld seam. Of course, there are many other combinations, and the rotation of the second object to be welded and the translation of the welding mechanism can be combined into multiple paths.

[0010] By adopting the above technical solution, the operator can first install the first object to be welded to the connecting opening of the second object to be welded, and then weld and seal the external welds of the first object to be welded and the second object to be welded to realize the external welding work; after completion, the second object to be welded with the first object to be welded installed is placed in the welding equipment, and the second object to be welded with the first object to be welded installed is located in the first direction of the welding mechanism, and the inner hole of the welding object of the first object to be welded is opposite to the end of the welding mechanism provided with a welding gun; at this time, the welding driving mechanism drives the welding mechanism to move along the first direction so that the end of the welding mechanism provided with a welding gun extends into the interior of the second object to be welded through the inner hole of the welding object of the first object to be welded; the welding driving mechanism then drives the welding mechanism to move along the second direction so that the welding head of the welding gun is aligned with the internal welding seam at that location; then the objects to be welded The driving mechanism drives the second object to be welded with the first object to be welded to move. Since the movement path of the second object to be welded with the first object to be welded matches the shape of the internal weld seam, the welding head of the welding gun moves along the internal weld seam relative to the second object to be welded, so that the welding gun welds the internal weld seam at that location. Alternatively, the object to be welded driving mechanism drives the second object to be welded with the first object to be welded to move, and at the same time, the welding driving mechanism drives the welding mechanism to move, so that the welding gun welds the internal weld seam at that location. Finally, the welding driving mechanism drives the welding mechanism to reset, so as to weld the internal weld seam generated when the first object to be welded is installed at that location. If the second object to be welded has multiple first objects to be welded installed, the operator can operate the second object to be welded, and the above operation is repeated to weld all the internal weld seams.

[0011] The above technical solution perfectly solves the welding problem of the internal welding seam formed between the first object to be welded and the second object to be welded when the inner hole of the welding object of the first object to be welded is a small hole, and greatly improves the welding efficiency and quality of the product, the smoothness of the weld, greatly improves the welding accuracy, and reduces the probability of welding failure.

[0012] Further, the welding mechanism includes a supporting connection member, the supporting connection member includes a first supporting connection section and a second supporting connection section, the first supporting connection section is extended along the first direction, and its two ends are respectively formed as a first supporting end and a second supporting end, the welding gun is arranged on one side of the second supporting end, and the two sides of the second supporting connection section are respectively connected to the second supporting end and the welding gun, and the welding head of the welding gun in the second supporting connection section is arranged toward the first supporting end; in the second direction, the distance from the side of the welding gun away from the second supporting end to the side of the second supporting end away from the welding gun is less than or equal to the aperture diameter of the inner hole of the welding object of the first object to be welded.

[0013] By adopting the above technical solution, the welding mechanism is more reasonable and the size of one end of the welding mechanism provided with the welding gun can be reduced. Specifically, in the second direction, the distance from the side of the welding gun away from the second support end to the side of the second support end away from the welding gun can be 40 mm.

[0014] Furthermore, the above technical solution can realize that when the welding gun extends into the second object to be welded through the connecting opening, the welding head faces the inner wall side of the second object to be welded where the connecting opening is located.

[0015] Furthermore, the welding gun is an argon arc welding gun, the supporting connecting piece is hollow to form a vent pipe, and the second supporting connecting section of the supporting connecting piece is connected and communicated with the air inlet of the welding gun.

[0016] By adopting the above technical solution, the welding mechanism is more suitable and the structure is more integrated and simplified, so that it can better pass through the inner hole of the first object to be welded and extend into the interior of the second object to be welded.

[0017] Further, the welding drive mechanism includes a welding connection and fixing structure for connecting and fixing the welding mechanism, the welding connection structure includes a first connection and fixing block and a second connection and fixing block, the first connection and fixing block and the second connection and fixing block are arranged opposite to each other, and the two are detachably connected, the first connection and fixing block is recessed on one side of the second connection and fixing block and is provided with a first connection and fixing groove matching the first supporting connection section, and the second connection and fixing block is recessed on one side of the first connection and fixing block and is provided with a second connection and fixing groove matching the first supporting connection section.

[0018] By adopting the above technical solution, the first supporting connection section is clamped by the cooperation of the first connecting and fixing block and the second connecting and fixing block, thereby realizing the connection between the welding drive mechanism and the welding mechanism;

[0019] The detachable connection between the first connection fixing block and the second connection fixing block enables the welding connection fixing structure to release the welding mechanism, that is, the welding mechanism can be separated from the welding drive mechanism, thereby realizing daily maintenance and equipment replacement; specifically, the first connection fixing block and the second connection fixing block are detachably connected by bolts.

[0020] Further, the welding drive mechanism includes a first welding drive module for driving the welding mechanism to move along the first direction, and a second welding drive module for driving the welding mechanism to move along the second direction.

[0021] The adoption of the above technical solution makes the welding drive mechanism more reasonable.

[0022] Further, the first welding driving module includes a first sliding driving member and a first sliding connecting member, and the first sliding driving member is used to drive the first sliding connecting member to slide along the first direction;

[0023] The second welding driving module includes a second sliding driving member and a second sliding connecting member, wherein the second sliding driving member is used to drive the second sliding connecting member to slide along the second direction;

[0024] The second welding drive module is arranged on the first sliding connection and slides synchronously with the first sliding connection, and the second sliding connection is connected to the welding mechanism; or the first welding drive module is arranged on the second sliding connection and slides synchronously with the second sliding connection, and the first sliding connection is connected to the welding mechanism.

[0025] Specifically, the first sliding driving member adopts a cylinder, and the extension direction of the driving rod of the first sliding driving member is the first direction; or the first sliding driving member adopts a servo motor, and its output shaft drives the first screw rod extending along the first direction to rotate, and the first sliding connecting member is threadedly matched with the first screw rod;

[0026] The second sliding drive member adopts a cylinder, and the extension direction of the driving rod of the second sliding drive member is the second direction; or the second sliding drive member adopts a servo motor, and its output shaft drives the second screw rod extending along the second direction to rotate, and the second sliding connector is threadedly matched with the second screw rod.

[0027] By adopting the above technical solution, the welding drive mechanism can reliably and stably realize the movement of the welding mechanism in the first direction and the second direction;

[0028] When the first sliding drive member and / or the second sliding drive member adopts a servo motor, the control of the movement of the welding mechanism is more precise, so that the welding device can adapt to internal welding seams of more shapes. Preferably, the first sliding drive member adopts a cylinder and the second sliding drive member adopts a servo motor;

[0029] The second welding driving module is arranged on the first sliding connection member and slides synchronously with the first sliding connection member. When the second sliding connection member is connected to the welding mechanism, when the first sliding driving member drives the first sliding connection member to slide along the first direction, the second welding driving module will be synchronously driven to slide along the first direction. The first sliding connection member is connected to the welding mechanism, that is, the welding mechanism is driven to slide in the first direction; when the second sliding driving member drives the second sliding connection member to slide along the second direction, the welding mechanism is synchronously driven to slide in the second direction, that is, the welding mechanism is driven to slide in the second direction. The above technical solution is simple, reliable, and stable in operation.

[0030] The first welding driving module is arranged on the second sliding connection member and slides synchronously with the second sliding connection member. The same is true when the first sliding connection member is connected to the welding mechanism.

[0031] Further, the first welding driving module includes a first slide rail and a first slider, the first slide rail is extended along the first direction, the first slider is slidably arranged on the first slide rail, and the first sliding connector is arranged on the first slider;

[0032] The second welding driving module includes a second slide rail and a second slider. The second slide rail is extended along the second direction. The second slider is slidably arranged on the second slide rail. The second sliding connector is arranged on the second slider.

[0033] By adopting the above technical solution, the cooperation between the first slide rail and the first slider can guide the sliding of the first sliding connector, and can make the sliding of the first sliding connector more stable, reliable and smooth; the cooperation between the second slide rail and the second slider can guide the sliding of the second sliding connector, and can make the sliding of the second sliding connector more stable, reliable and smooth.

[0034] Further, the welding device includes a first limiter and a second limiter, the first limiter and the second limiter are respectively located on both sides of the first sliding connection member in the first direction, and the first limiter and the second limiter are arranged at a distance in the first direction to limit the movement range of the first sliding connection member in the first direction;

[0035] The welding equipment includes a third limiter and a fourth limiter, wherein the third limiter and the fourth limiter are respectively located on both sides of the second sliding connection member in the second direction, and the third limiter and the fourth limiter are arranged at a distance in the second direction to limit the movement range of the second sliding connection member in the second direction.

[0036] By adopting the above technical solution, the first sliding connection member will abut against the first limiting member during the sliding process, thereby limiting the sliding of the first sliding connection member in this direction; the first sliding connection member will abut against the second limiting member during the sliding process in the opposite direction, thereby limiting the sliding of the first sliding connection member in this direction, thereby achieving the first limiting member and the second limiting member cooperating to achieve the sliding range of the first sliding connection member in the first direction; that is, when the first sliding connection member abuts against the first limiting member, it can limit the depth of one end of the welding mechanism provided with a welding gun extending into the second object to be welded, effectively control the distance between the welding head and the internal welding seam, and ensure the stability of the welding arc and the full protection of argon gas; when the second sliding connection member abuts against the second limiting member, it can ensure that one end of the welding mechanism provided with a welding gun completely welds the first object and the second object to be welded;

[0037] During the sliding process, the second sliding connector will abut against the third limiting member to limit the sliding of the second sliding connector in this direction. During the sliding process in the opposite direction, the second sliding connector will abut against the fourth limiting member to limit the sliding of the second sliding connector in this direction, thereby realizing the cooperation between the third limiting member and the fourth limiting member to achieve the sliding range of the second sliding connector in the second direction; that is, when the second sliding connector abuts against the third limiting member, it can ensure that the welding head can be opposite to the internal welding seam; when the second sliding connector abuts against the fourth limiting member, it can ensure that the welding head can be opposite to the inner hole of the welding object of the first object to be welded, so as to ensure that the end of the welding mechanism provided with a welding gun can safely withdraw from the first welding object and the second object to be welded.

[0038] Further, the first limiting member and the second limiting member are adjustable so as to be able to move closer to or further away from each other, and the third limiting member and the fourth limiting member are adjustable so as to be able to move closer to or further away from each other.

[0039] By adopting the above technical solution, the settings of the first limit member, the second limit member, the third limit member and the fourth limit member are more reasonable, and the operator can adjust them according to actual welding requirements, that is, the movement range of the welding mechanism in the first direction and the second direction can be adjusted, making the welding equipment more practical and reasonable.

[0040] Further, the first sliding connection member is provided with a first limiting fixing plate and a second limiting fixing plate on both sides in the first direction, the first limiting member and the second limiting member are screws, the first fixing plate is provided with a first adjusting screw hole matching the first limiting member, the first limiting member is thread-adjustably arranged in the first adjusting screw hole, the second fixing plate is provided with a second adjusting screw hole matching the second limiting member, the second limiting member is thread-adjustably arranged in the second adjusting screw hole;

[0041] The second sliding connection member is respectively provided with a third limit fixing plate and a fourth limit fixing plate on both sides in the second direction, the third limit member and the fourth limit member are screwed, the third fixing plate is provided with a third adjusting screw hole matching the third limit member, the third limit member is threadably adjusted in the third adjusting screw hole, the fourth fixing plate is provided with a fourth adjusting screw hole matching the fourth limit member, the fourth limit member is threadably adjusted in the fourth adjusting screw hole.

[0042] With the above technical solution, the first position-limiting member can be thread-adjustably arranged in the first adjusting screw hole to achieve adjustment of its proximity to or distance from the second position-limiting member, and the adjustment accuracy of the first position-limiting member can be ensured; the second position-limiting member can be thread-adjustably arranged in the second adjusting screw hole to achieve adjustment of its proximity to or distance from the first position-limiting member, and the adjustment accuracy of the second position-limiting member can be ensured;

[0043] The third position-limiting member is thread-adjustably arranged in the third adjusting screw hole to achieve adjustment of its proximity to and distance from the fourth position-limiting member, and the adjustment accuracy of the third position-limiting member can be ensured; the fourth position-limiting member is thread-adjustably arranged in the fourth adjusting screw hole to achieve adjustment of its proximity to and distance from the third position-limiting member, and the adjustment accuracy of the fourth position-limiting member can be ensured;

[0044] The above technical solution is reasonably designed and easy to operate. The operator only needs to rotate the first limit member, the second limit member, the third limit member and the fourth limit member to achieve corresponding adjustments.

[0045] Furthermore, the object to be welded driving mechanism includes an object to be welded driving component and an object to be welded carrying platform, the object to be welded carrying platform is used to carry and place the second object to be welded with the first object to be welded installed, the object to be welded driving component is used to drive the object to be welded carrying platform to move, and the movement path of the object to be welded driving component to drive the object to be welded carrying platform to move matches the shape of the internal welding seam.

[0046] By adopting the above technical solution, the operator places the second object to be welded with the first object to be welded installed on the object to be welded carrying platform. At this time, the object to be welded driving component drives the object to be welded carrying platform to move, which can drive the second object to be welded with the first object to be welded installed to move synchronously; the above technical solution is simple and reasonable.

[0047] Furthermore, the internal welding seam is circular, and the object-to-be-welded driving mechanism drives the second object to be welded with the first object to be welded mounted thereon to rotate around the central axis of the internal welding seam, that is, the object-to-be-welded driving assembly drives the object-to-be-welded carrying platform to rotate around the central axis of the internal welding seam.

[0048] The adoption of the above technical solution makes the driving mechanism of the object to be welded more reasonable.

[0049] Further, the object to be welded driving assembly includes an object to be welded driving member and a carrying platform connecting shaft, the carrying platform connecting shaft is arranged on the carrying platform of the object to be welded, when the second object to be welded with the first object to be welded mounted thereon is placed on the carrying platform of the object to be welded and the connecting opening faces the side of the carrying platform of the object to be welded, the axis of the carrying platform connecting shaft is colinear with the central axis of the internal welding seam formed by the connecting opening, the carrying platform connecting shaft sleeve is provided with a first rotating driving gear, and the first rotating driving gear is synchronously rotationally connected with the carrying platform connecting shaft, the rotating output shaft sleeve of the object to be welded driving member is provided with a second rotating driving gear, and the second rotating driving gear is synchronously rotationally connected with the rotating output shaft of the object to be welded driving member, and the first rotating driving gear is meshed with the second rotating gear.

[0050] With the above technical solution, the rotation output shaft of the object-to-be-welded driving member rotates synchronously to rotate the second rotation driving gear. Since the second rotation gear is meshed with the first rotation gear, the second rotation gear rotates and synchronously drives the bearing platform connecting shaft to rotate, thereby driving the bearing platform of the object-to-be-welded to rotate.

[0051] Specifically, the inner ring of the first rotating gear is recessed with a first gear limiting groove, and correspondingly, the supporting platform connecting shaft is recessed with a second gear limiting groove opposite to the first gear limiting groove at the place where the first rotating gear is installed, and a first gear limiting block is inserted into the first gear limiting groove and the second gear limiting groove to achieve synchronous rotation of the two; the inner ring of the second rotating gear is recessed with a third gear limiting groove, and correspondingly, the rotating output shaft of the driving member of the object to be welded is recessed with a fourth rotation limiting groove opposite to the third gear limiting groove at the place where the second rotating gear is installed, and a second gear limiting block is inserted into the third gear limiting groove and the fourth gear limiting groove to achieve synchronous rotation of the two; the driving member of the object to be welded adopts a motor.

[0052] Further, the supporting platform for the objects to be welded includes a supporting platform body, a positioning plate, and a plurality of supporting members, wherein the positioning plate is arranged on the supporting platform body, and the positioning plate is recessed to form a positioning groove that matches the portion of the first object to be welded that protrudes from the second object to be welded, and the plurality of supporting members are arranged on the supporting platform body and around the positioning plate, and the height of the supporting members matches the distance from the supporting platform body at which the supporting members are located to the outer wall of the second object to be welded.

[0053] The adoption of the above technical solution makes the supporting platform for the objects to be welded more reasonable. The setting of the positioning plate can facilitate the operator to position the second object to be welded with the first object to be welded installed on the supporting platform body. The setting of several supporting members can make the second object to be welded with the first object to be welded installed stably and reliably placed on the supporting platform body; specifically, four supporting members are provided.

[0054] Furthermore, the second object to be welded is a cylindrical structure, the support member includes a caster and a caster bracket, the caster bracket is arranged on the bearing platform body, the caster is rotatably arranged on the caster bracket, and the rotation axis of the caster is parallel to the axis of the second object to be welded.

[0055] The above technical solution is adopted to facilitate the operator to rotate the second object to be welded, which is convenient for actual operation; for example, if multiple first objects to be welded need to be installed on the second object to be welded, after the internal welding seam formed by a first object to be welded is welded, the operator can lift the second object to be welded so that the first object to be welded at this location is disengaged from the positioning groove, and after rotating it to a certain angle, the second object to be welded can be put down. At this time, the operator can rely on the casters to rotate the second object to be welded to the next first object to be welded, and lift the second object to be welded so that the first object to be welded at this location is placed in the positioning groove.

[0056] Furthermore, the object-to-be-welded carrying platform is penetrated by a first welding matching through-hole through which one end of the welding mechanism provided with a welding gun can pass, and when the second object to be welded with the first object to be welded mounted thereon is placed on the object-to-be-welded carrying platform and the connecting opening is facing the object-to-be-welded carrying platform side, the first welding matching through-hole is opposite to the welding object inner hole of the first object to be welded; the carrying platform connecting axis is penetrated by a second welding matching through-hole at a position relative to the first welding matching through-hole, and the second welding matching through-hole can accommodate one end of the welding mechanism provided with a welding gun, and at least one end of the welding mechanism provided with a welding gun can be telescopically arranged in the first welding matching through-hole and the second welding matching through-hole, and the axial direction of the first welding matching through-hole and the second welding matching through-hole is the first direction.

[0057] The adoption of the above technical solution makes the welding equipment more reasonable.

[0058] Furthermore, the welding equipment includes a base frame, the base frame includes a substrate, the supporting platform for the object to be welded is located on one side of the substrate, the substrate is provided with a connecting shaft mating hole, and the substrate is provided with a bearing seat at the connecting shaft mating hole, the supporting platform connecting shaft is passed through the bearing seat, and a bearing is provided between the outer wall of the supporting platform connecting shaft and the bearing seat.

[0059] By adopting the above technical solution, the base frame provides an installation support foundation for other mechanisms of the welding equipment; the setting of the bearing can reduce the friction force of the rotation of the bearing platform connecting shaft and make the rotation of the bearing platform connecting shaft more stable;

[0060] Specifically, the bearing includes a first bearing and a second bearing, the first bearing is arranged closer to the substrate than the second bearing, a spacer sleeve is arranged between the first bearing and the second bearing, the first bearing adopts a tapered roller bearing, and the second bearing adopts a deep groove ball bearing;

[0061] The first rotating gear is located on the side of the second bearing away from the first bearing, and a spacer sleeve is arranged between the first rotating gear and the second bearing, and a limiting nut is arranged on the side of the first rotating gear away from the second bearing of the supporting platform connecting shaft, and two limiting nuts are arranged to realize the installation of the first bearing, the second bearing and the first rotating gear.

[0062] Furthermore, the welding drive mechanism and the object-to-be-welded drive member are arranged on the base frame.

[0063] The above technical solution makes the welding device more reasonable; specifically, the welding device includes a welding drive connecting plate, and the welding drive connecting plate is fixedly arranged on the base plate;

[0064] The second welding drive module is arranged on the first sliding connection member and slides synchronously with the first sliding connection member. When the second sliding connection member is connected to the welding mechanism, the first sliding drive member is installed on the welding drive connecting plate through the first drive mounting bracket, the first slide rail is fixedly arranged on the welding drive connecting plate, the first limit fixing plate and the second limit fixing plate are fixedly arranged on the welding drive connecting plate, the second sliding drive member is installed on the first sliding connection member through the second drive mounting bracket, and the third limit fixing plate and the fourth limit fixing plate are arranged on the first sliding connection member; further, the three limit fixing plates form the second drive mounting bracket;

[0065] The first welding drive module is arranged on the second sliding connection and slides synchronously with the second sliding connection. When the first sliding connection is connected to the welding mechanism, the second sliding drive member is installed on the welding drive connecting plate through the second drive mounting bracket, the second slide rail is fixedly arranged on the welding drive connecting plate, the third limit fixing plate and the fourth limit fixing plate are fixedly arranged on the welding drive connecting plate, the first sliding drive member is installed on the second sliding connection through the first drive mounting bracket, and the first limit fixing plate and the second limit fixing plate are arranged on the second sliding connection; further, the three limit fixing plates form the second drive mounting bracket.

[0066] Furthermore, the base frame includes a plurality of base frame legs, and the plurality of base frame legs are arranged on a side of the base plate away from the supporting platform of the object to be welded.

[0067] The above technical solution makes the welding equipment more reasonable; specifically, the base frame is provided with four legs, which are respectively located at the four corners of the base plate.

[0068] A welding method, using the above welding equipment, the specific steps are as follows:

[0069] S1, preparing objects to be welded, after the first object to be welded is installed to the connection opening of the second object to be welded, welding and sealing the external welds of the first object to be welded and the second object to be welded;

[0070] S2, placing the second object to be welded with the first object to be welded mounted thereon in the welding device, and the second object to be welded with the first object to be welded mounted thereon is located in the first direction of the welding mechanism, and the inner hole of the welding object of the first object to be welded is opposite to an end of the welding mechanism where a welding gun is provided;

[0071] S3, the welding drive mechanism drives the welding mechanism to move along the first direction so that one end of the welding mechanism provided with a welding gun extends into the interior of the second object to be welded through the inner hole of the first object to be welded;

[0072] S4, the welding drive mechanism drives the welding mechanism to move along the second direction so that the welding head of the welding gun is aligned with the internal welding seam;

[0073] S5, the object-to-be-welded driving mechanism drives the second object-to-be-welded with the first object-to-be-welded to move, or the object-to-be-welded driving mechanism drives the second object-to-be-welded with the first object-to-be-welded to move, and at the same time, the welding driving mechanism drives the welding mechanism to move, so that the welding gun welds the internal weld at that location;

[0074] S6, the welding drive mechanism drives the welding mechanism to reset.

[0075] The above technical solution perfectly solves the welding problem of the internal welding seam formed between the first object to be welded and the second object to be welded when the inner hole of the first object to be welded is a small hole, and greatly improves the welding efficiency and quality of the product, the smoothness of the weld, the welding accuracy, and the probability of welding failure.

[0076] Specifically, in S1, the first object to be welded is a flange seat, and the second object to be welded is a barrel body; the barrel body is an upper barrel half and a lower barrel half assembled and welded, and a band barrel hoop is provided at the joint of the upper and lower barrel halves;

[0077] If the second object to be welded is mounted with a plurality of first objects to be welded, the operator may loop through the above steps S1 to S6 to weld the internal weld seams formed by mounting all the first objects to be welded to the second object to be welded.

[0078] Compared with the prior art, the present invention has the following beneficial effects:

[0079] (1) The welding equipment and welding method of the present invention can perfectly solve the welding problem of the internal welding seam formed between the first object to be welded and the second object to be welded when the inner hole of the welding object of the first object to be welded is a small hole, and greatly improve the welding efficiency and quality of the product, the smoothness of the weld, the welding accuracy, and the probability of welding failure.

[0080] (2) The welding equipment and welding method of the present invention are reasonably designed. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0082] Figure 1 It is a schematic diagram of the three-dimensional structure of the welding equipment of the present invention;

[0083] Figure 2 This is a schematic diagram of welding operation of the welding equipment of the present invention;

[0084] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0085] Figure 4 It is a schematic diagram of the three-dimensional structure of the welding equipment of the present invention from another angle (excluding the base frame support feet);

[0086] Figure 5 It is a structural schematic diagram of a welding mechanism and a welding driving mechanism in the welding equipment of the present invention;

[0087] Figure 6 It is a structural schematic diagram of a welding mechanism and a driving mechanism for an object to be welded in the welding equipment of the present invention;

[0088] Figure 7 It is a structural schematic diagram of the second sliding drive member in the welding equipment of the present invention using a servo motor;

[0089] The names of the components corresponding to the reference numerals in the figure are: 1. welding mechanism; 101. welding gun; 1011. welding head; 102. supporting connecting member; 1021. first supporting connecting section; 1021-1. first supporting end; 1021-2. second supporting end; 1022. second supporting connecting section; 2. welding driving mechanism; 201. welding connecting fixing structure; 2011. first connecting fixing block; 2011-1. first connecting fixing groove; 2012. second connecting fixing block; 2012-1. second connecting fixing groove; 202. first welding driving module; 2021. first Sliding drive member; 2022, first sliding connection member; 2023, first slide rail; 2024, first slider; 203, second welding drive module; 2031, second sliding drive member; 2032, second sliding connection member; 2033, second slide rail; 2034, second slider; 2035, second screw rod; 3, object to be welded driving mechanism; 301, object to be welded driving assembly; 3011, object to be welded driving member; 3011-1, rotating output shaft; 3011-2, fourth gear limiting groove; 3012, bearing platform connecting shaft; 3012-1, second welding matching perforation; 3012-2, second gear limiting groove; 3013, first rotary drive gear; 3013-1, first gear limiting groove; 3014, second rotary drive gear; 3014-1, third gear limiting groove; 302, support platform for objects to be welded; 3021, support platform body; 3022, positioning plate; 3022-1, positioning groove; 3023, support member; 3023-1, caster; 3023-2, caster bracket; 3024, first welding matching perforation; 4, first limiting member; 5, second limiting member; 6, third limiting member; 7, fourth limiting member; 8, first Limiting fixing plate; 801, first adjusting screw hole; 9, second limiting fixing plate; 901, second adjusting screw hole; 10, third limiting fixing plate; 1001, third adjusting screw hole; 11, fourth limiting fixing plate; 1101, fourth adjusting screw hole; 12, base frame; 1201, base plate; 12011, connecting shaft matching hole; 1202, base frame support foot; 13, bearing seat; 14, bearing; 1401, first bearing; 1402, second bearing; 15, spacer sleeve; 16, limiting nut; 17, welding drive connecting plate; 18, first drive mounting bracket; 19, second drive mounting bracket;

[0090] 100, first object to be welded; 100-1, inner hole of welded object; 200, second object to be welded; 200-1, connecting opening; 200-2, upper half barrel; 200-3, lower half barrel; 200-4, band barrel hoop; 300, internal welding seam. DETAILED DESCRIPTION

[0091] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0092] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0093] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0094] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0095] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0096] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0098] See also Figures 1 to 6 The present invention provides a welding device for welding an internal welding seam 300 formed at a connection between a first object to be welded 100 and a connection opening 200-1 of a second object to be welded 200, comprising:

[0099] A welding mechanism 1, comprising a welding gun 101 having a welding head 1011, wherein the welding mechanism 1 is provided with one end of the welding gun 101 capable of extending into the interior of a second object to be welded 200 through a welding object inner hole 100-1 of a first object to be welded 100, wherein the welding head 1011 is provided with a connection opening 200-1 side facing the second object to be welded 200 when the welding gun 101 extends into the interior of the second object to be welded 200 through the welding object inner hole 100-1;

[0100] A welding drive mechanism 2, connected to the welding mechanism 1 to drive the welding mechanism 1 to move along a first direction, and to drive the welding mechanism 1 to move along a second direction perpendicular to the first direction;

[0101] and a welding object driving mechanism 3, which is used to drive the second welding object 200 mounted with the first welding object 100 to move, and the movement path of the second welding object 200 mounted with the first welding object 100 driven by the welding object driving mechanism 3 matches the shape of the internal welding seam 300. For example, if the internal welding seam 300 is circular, the movement path of the second welding object 200 mounted with the first welding object 100 driven by the welding object driving mechanism 3 is circular, i.e., rotating; if the internal welding seam 300 is square, the movement path of the second welding object 200 mounted with the first welding object 100 driven by the welding object driving mechanism 3 is square;

[0102] Alternatively, the object-to-be-welded driving mechanism 3 drives the second object to be welded 200 installed with the first object to be welded 100 to move, and the welding driving mechanism 2 drives the welding mechanism 1 to move so that the path of the welding head 1011 relative to the second object to be welded 200 matches the shape of the internal welding seam 300. For example, if the internal welding seam 300 is a square, the welding driving mechanism 2 drives the welding mechanism 1 to move to match one side of the internal welding seam 300, and the object-to-be-welded driving mechanism 3 drives the second object to be welded 200 installed with the first object to be welded 100 to rotate, so that the welding head 1011 can align with the adjacent sides in the internal welding seam 300 and move, and the cycle is repeated to achieve a trajectory that matches the shape of the internal welding seam 300. Of course, there are many other combinations. The rotation of the second object to be welded 200 and the translation of the welding mechanism 1 can be combined into a variety of paths.

[0103] By adopting the above technical solution, the operator can first install the first object to be welded 100 to the connection opening 200-1 of the second object to be welded 200, and then weld and seal the external welds of the first object to be welded 100 and the second object to be welded 200 to achieve external welding work; after completion, the second object to be welded 200 with the first object to be welded 100 installed is placed in the welding device, and the second object to be welded 200 with the first object to be welded 100 installed is located in the first direction of the welding mechanism 1, and the welding of the first object to be welded 100 is sealed. The inner hole 100-1 of the first object to be welded 100 is opposite to the end of the welding mechanism 1 provided with a welding gun 101; at this time, the welding drive mechanism 2 drives the welding mechanism 1 to move along the first direction so that the end of the welding mechanism 1 provided with the welding gun 101 passes through the inner hole 100-1 of the first object to be welded 100 and extends into the interior of the second object to be welded 200; the welding drive mechanism 2 then drives the welding mechanism 1 to move along the second direction so that the welding head 1011 of the welding gun 101 is aligned with the internal welding seam 300 there; then the objects to be welded The object driving mechanism 3 drives the second object to be welded 200 on which the first object to be welded 100 is mounted to move. Since the movement path of the second object to be welded 200 on which the first object to be welded 100 is mounted matches the shape of the internal weld seam 300, the welding head 1011 of the welding gun 101 moves along the internal weld seam 300 relative to the second object to be welded 200, so that the welding gun 101 welds the internal weld seam 300 at that location, or the object driving mechanism 3 drives the second object to be welded 200 on which the first object to be welded 100 is mounted to move. The object to be welded 200 moves, and at the same time, the welding drive mechanism 2 drives the welding mechanism 1 to move, so that the welding gun 101 welds the internal welding seam 300 at that location; finally, the welding drive mechanism 2 drives the welding mechanism 1 to reset, so as to weld the internal welding seam 300 generated when the first object to be welded 100 is installed at that location; if the second object to be welded 200 is installed with multiple first objects to be welded 100, the operator can operate the second object to be welded 200, and the above operations are repeated to weld all the internal welding seams 300;

[0104] The above technical solution perfectly solves the welding problem of the internal welding seam 300 formed between the first object to be welded 100 and the second object to be welded 200 when the inner hole 100-1 of the welding object is a small hole, and greatly improves the welding efficiency and quality of the product, the smoothness of the weld, the welding accuracy, and the probability of welding failure.

[0105] Further, the welding mechanism 1 includes a supporting connecting member 102, the supporting connecting member 102 includes a first supporting connecting section 1021 and a second supporting connecting section 1022, the first supporting connecting section 1021 is extended along the first direction, and its two ends are respectively formed as a first supporting end 1021-1 and a second supporting end 1021-2, the welding gun 101 is arranged on one side of the second supporting end 1021-2, and the two sides of the second supporting connecting section 1022 are respectively connected to the second supporting end 1021-2 and the welding gun 101, and the welding head 1011 of the welding gun 101 of the second supporting connecting section 1022 is arranged toward the first supporting end 1021-1; in the second direction, the distance from the side of the welding gun 101 away from the second supporting end 1021-2 to the side of the second supporting end 1021-2 away from the welding gun 101 is less than or equal to the aperture of the welding object inner hole 100-1 of the first object to be welded 100.

[0106] By adopting the above technical solution, the welding mechanism 1 is more reasonable, and the size of the end of the welding mechanism 1 provided with the welding gun 101 can be reduced. Specifically, in the second direction, the distance from the side of the welding gun 101 away from the second support end 1021-2 to the side of the second support end 1021-2 away from the welding gun 101 can be 40 mm.

[0107] Moreover, the above technical solution can realize that when the welding head 1011 extends into the second object to be welded 200 through the connecting opening 200 - 1 , it faces the inner wall side of the second object to be welded 200 where the connecting opening 200 - 1 is located.

[0108] Furthermore, the welding gun 101 is a argon arc welding gun 101 , the supporting connector 102 is hollow to form a vent pipe, and the second supporting connecting section 1022 of the supporting connector 102 is connected to and communicated with the air inlet of the welding gun 101 .

[0109] By adopting the above technical solution, the welding mechanism 1 is more suitable and the structure is more integrated and simplified, so that it can better pass through the welding object inner hole 100 - 1 of the first object to be welded 100 and extend into the interior of the second object to be welded 200 .

[0110] Further, the welding drive mechanism 2 includes a welding connection fixing structure 201 for connecting and fixing the welding mechanism 1, and the welding connection structure includes a first connection fixing block 2011 and a second connection fixing block 2012, the first connection fixing block 2011 and the second connection fixing block 2012 are arranged opposite to each other, and the two are detachably connected, and the first connection fixing block 2011 is recessed on one side of the second connection fixing block 2012 and is provided with a first connection fixing groove 2011-1 matching the first supporting connection section 1021, and the second connection fixing block 2012 is recessed on one side of the first connection fixing block 2011 and is provided with a second connection fixing groove 2012-1 matching the first supporting connection section 1021.

[0111] By adopting the above technical solution, the first connecting and fixing block 2011 and the second connecting and fixing block 2012 cooperate to clamp the first supporting and connecting section 1021, thereby realizing the connection between the welding driving mechanism 2 and the welding mechanism 1;

[0112] The detachable connection between the first connection fixing block 2011 and the second connection fixing block 2012 enables the welding connection fixing structure 201 to release the welding mechanism 1, that is, the welding mechanism 1 can be separated from the welding drive mechanism 2, thereby realizing daily maintenance and equipment replacement; specifically, the first connection fixing block 2011 and the second connection fixing block 2012 are detachably connected by bolts.

[0113] Furthermore, the welding drive mechanism 2 includes a first welding drive module 202 for driving the welding mechanism 1 to move along the first direction, and a second welding drive module 203 for driving the welding mechanism 1 to move along the second direction.

[0114] The above technical solution makes the welding drive mechanism 2 more reasonable.

[0115] Further, the first welding driving module 202 includes a first sliding driving member 2021 and a first sliding connecting member 2022, wherein the first sliding driving member 2021 is used to drive the first sliding connecting member 2022 to slide along the first direction;

[0116] The second welding driving module 203 includes a second sliding driving member 2031 and a second sliding connecting member 2032, wherein the second sliding driving member 2031 is used to drive the second sliding connecting member 2032 to slide along the second direction;

[0117] The second welding drive module 203 is arranged on the first sliding connection 2022 and slides synchronously with the first sliding connection 2022, and the second sliding connection 2032 is connected to the welding mechanism 1; or the first welding drive module 202 is arranged on the second sliding connection 2032 and slides synchronously with the second sliding connection 2032, and the first sliding connection 2022 is connected to the welding mechanism 1.

[0118] Specifically, the first sliding driving member 2021 adopts a cylinder, and the extension direction of the driving rod of the first sliding driving member 2021 is the first direction; or the first sliding driving member 2021 adopts a servo motor, and its output shaft drives the first screw extending along the first direction to rotate, and the first sliding connecting member 2022 is threadedly matched with the first screw;

[0119] The second sliding drive member 2031 adopts a cylinder, and the extension direction of the driving rod of the second sliding drive member 2031 is the second direction; or the second sliding drive member 2031 adopts a servo motor, and its output shaft drives the second screw rod 2035 extending along the second direction to rotate, and the second sliding connector 2032 is threadedly matched with the second screw rod 2035.

[0120] By adopting the above technical solution, the welding drive mechanism 2 can reliably and stably realize the movement of the welding mechanism 1 in the first direction and the second direction;

[0121] When the first sliding drive member 2021 and / or the second sliding drive member 2031 adopts a servo motor, the control of the movement of the welding mechanism 1 is more precise, so that the welding device can adapt to internal welding seams 300 of more shapes. Preferably, the first sliding drive member 2021 adopts a cylinder, and the second sliding drive member 2031 adopts a servo motor;

[0122] The second welding driving module 203 is arranged on the first sliding connection member 2022 and slides synchronously with the first sliding connection member 2022. When the second sliding connection member 2032 is connected to the welding mechanism 1, when the first sliding driving member 2021 drives the first sliding connection member 2022 to slide along the first direction, it will synchronously drive the second welding driving module 203 to slide along the first direction, and the first sliding connection member 2022 is connected to the welding mechanism 1, that is, the welding mechanism 1 is driven to slide in the first direction; when the second sliding driving member 2031 drives the second sliding connection member 2032 to slide along the second direction, it will synchronously drive the welding mechanism 1 to slide in the second direction, that is, the welding mechanism 1 is driven to slide in the second direction; the above technical solution is simple, reliable, and stable in operation;

[0123] The first welding driving module 202 is disposed on the second sliding connection member 2032 and slides synchronously with the second sliding connection member 2032 . The same is true when the first sliding connection member 2022 is connected to the welding mechanism 1 .

[0124] Further, the first welding driving module 202 includes a first slide rail 2023 and a first slider 2024, the first slide rail 2023 is extended along the first direction, the first slider 2024 can be slidably arranged on the first slide rail 2023, and the first sliding connector 2022 is arranged on the first slider 2024;

[0125] The second welding driving module 203 includes a second slide rail 2033 and a second slider 2034 . The second slide rail 2033 is extended along the second direction. The second slider 2034 can be slidably arranged on the second slide rail 2033 . The second sliding connector 2032 is arranged on the second slider 2034 .

[0126] By adopting the above technical solution, the cooperation between the first slide rail 2023 and the first slider 2024 can guide the sliding of the first sliding connector 2022, and can make the sliding of the first sliding connector 2022 more stable, reliable and smooth; the cooperation between the second slide rail 2033 and the second slider 2034 can guide the sliding of the second sliding connector 2032, and can make the sliding of the second sliding connector 2032 more stable, reliable and smooth.

[0127] Further, the welding device includes a first limiter 4 and a second limiter 5, the first limiter 4 and the second limiter 5 are respectively located on both sides of the first sliding connection member 2022 in the first direction, and the first limiter 4 and the second limiter 5 are arranged at a distance in the first direction to limit the movement range of the first sliding connection member 2022 in the first direction;

[0128] The welding equipment includes a third limit member 6 and a fourth limit member 7, and the third limit member 6 and the fourth limit member 7 are respectively located on both sides of the second sliding connection member 2032 in the second direction, and the third limit member 6 and the fourth limit member 7 are set at a distance in the second direction to limit the movement range of the second sliding connection member 2032 in the second direction.

[0129] By adopting the above technical solution, the first sliding connector 2022 will abut against the first limiting member 4 during the sliding process, thereby limiting the sliding of the first sliding connector 2022 in this direction. The first sliding connector 2022 will abut against the second limiting member 5 during the sliding process in the opposite direction, thereby limiting the sliding of the first sliding connector 2022 in this direction, thereby realizing the cooperation between the first limiting member and the second limiting member to achieve the sliding range of the first sliding connector 2022 in the first direction; that is, when the first sliding connector 2022 abuts against the first limiting member 4, it can limit the depth of the end of the welding mechanism 1 provided with the welding gun 101 extending into the second object to be welded 200, effectively control the distance between the welding head 1011 and the internal welding seam 300, and ensure the stability of the welding arc and the full protection of the argon gas; when the second sliding connector 2032 abuts against the second limiting member 5, it can ensure that the end of the welding mechanism 1 provided with the welding gun 101 completely welds the first object and the second object to be welded 200;

[0130] During the sliding process, the second sliding connector 2032 will abut against the third limiting member 6 to limit the sliding of the second sliding connector 2032 in this direction. During the sliding process of the second sliding connector 2032 in the opposite direction, it will abut against the fourth limiting member 7 to limit the sliding of the second sliding connector 2032 in this direction, thereby realizing the cooperation between the third limiting member and the fourth limiting member to realize the sliding range of the second sliding connector 2032 in the second direction; that is, when the second sliding connector 2032 abuts against the third limiting member 6, it can ensure that the welding head 1011 can be opposite to the internal welding seam 300; when the second sliding connector 2032 abuts against the fourth limiting member 7, it can ensure that the welding head 1011 can be opposite to the welding inner hole 100-1 of the first object to be welded 100, so as to ensure that the end of the welding mechanism 1 provided with the welding gun 101 can safely withdraw from the first weld and the second object to be welded 200.

[0131] Further, the first limiting member 4 and the second limiting member 5 are adjustable so as to be able to move closer to or further away from each other, and the third limiting member 6 and the fourth limiting member 7 are adjustable so as to be able to move closer to or further away from each other.

[0132] By adopting the above technical solution, the settings of the first limit member 4, the second limit member 5, the third limit member 6 and the fourth limit member 7 are more reasonable, and the operator can adjust them according to actual welding requirements, that is, the movement range of the welding mechanism 1 in the first direction and the second direction can be adjusted, making the welding equipment more practical and reasonable.

[0133] Further, the first sliding connection member 2022 is provided with a first limit fixing plate 8 and a second limit fixing plate 9 on both sides in the first direction, the first limit member 4 and the second limit member 5 are screws, the first fixing plate is provided with a first adjustment screw hole 801 matching the first limit member 4, the first limit member 4 can be threadedly adjusted in the first adjustment screw hole 801, the second fixing plate is provided with a second adjustment screw hole 901 matching the second limit member 5, the second limit member 5 can be threadedly adjusted in the second adjustment screw hole 901;

[0134] The second sliding connection member 2032 is respectively provided with a third limiting fixing plate 10 and a fourth limiting fixing plate 11 on both sides in the second direction, the third limiting member 6 and the fourth limiting member 7 are screws, the third fixing plate is provided with a third adjusting screw hole 1001 matching the third limiting member 6, the third limiting member 6 can be threadedly adjusted in the third adjusting screw hole 1001, the fourth fixing plate is provided with a fourth adjusting screw hole 1101 matching the fourth limiting member 7, the fourth limiting member 7 can be threadedly adjusted in the fourth adjusting screw hole 1101.

[0135] By adopting the above technical solution, the first limiter 4 can be thread-adjustably arranged in the first adjusting screw hole 801 to achieve adjustment of its proximity to or distance from the second limiter 5, and the adjustment accuracy of the first limiter 4 can be ensured; the second limiter 5 can be thread-adjustably arranged in the second adjusting screw hole 901 to achieve adjustment of its proximity to or distance from the first limiter 4, and the adjustment accuracy of the second limiter 5 can be ensured;

[0136] The third position-limiting member 6 is thread-adjustably arranged in the third adjusting screw hole 1001 to achieve adjustment of its proximity to or distance from the fourth position-limiting member 7, and the adjustment accuracy of the third position-limiting member 6 can be ensured; the fourth position-limiting member 7 is thread-adjustably arranged in the fourth adjusting screw hole 1101 to achieve adjustment of its proximity to or distance from the third position-limiting member 6, and the adjustment accuracy of the fourth position-limiting member 7 can be ensured;

[0137] The above technical solution is reasonably designed and easy to operate. The operator only needs to rotate the first limit member 4, the second limit member 5, the third limit member 6 and the fourth limit member 7 to achieve corresponding adjustment.

[0138] Furthermore, the object to be welded driving mechanism 3 includes an object to be welded driving component 301 and an object to be welded carrying platform 302, wherein the object to be welded carrying platform 302 is used to carry and place the second object to be welded 200 on which the first object to be welded 100 is installed, and the object to be welded driving component 301 is used to drive the object to be welded carrying platform 302 to move, and the movement path of the object to be welded driving component 301 to drive the object to be welded carrying platform 302 to move matches the shape of the internal welding seam 300.

[0139] By adopting the above technical solution, the operator places the second object to be welded 200 installed with the first object to be welded 100 on the object to be welded carrying platform 302. At this time, the object to be welded driving component 301 drives the object to be welded carrying platform 302 to move, which can drive the second object to be welded 200 installed with the first object to be welded 100 to move synchronously; the above technical solution is simple and reasonable.

[0140] Furthermore, the internal welding seam 300 is circular, and the object-to-be-welded driving mechanism 3 drives the second object-to-be-welded 200 mounted with the first object-to-be-welded 100 to rotate around the central axis of the internal welding seam 300, that is, the object-to-be-welded driving assembly 301 drives the object-to-be-welded supporting platform 302 to rotate around the central axis of the internal welding seam 300.

[0141] The above technical solution makes the object-to-be-welded driving mechanism 3 more reasonable.

[0142] Furthermore, the object-to-be-welded driving assembly 301 includes an object-to-be-welded driving member 3011 and a carrying platform connecting shaft 3012, wherein the carrying platform connecting shaft 3012 is disposed on the object-to-be-welded carrying platform 302, and when the second object-to-be-welded 200 mounted with the first object-to-be-welded 100 is placed on the object-to-be-welded carrying platform 302 and the connecting opening 200-1 faces the side of the object-to-be-welded carrying platform 302, the axis of the carrying platform connecting shaft 3012 and the center of the internal welding seam 300 formed by the connecting opening 200-1 are aligned with each other. The central axis lines are collinear, the supporting platform connecting shaft 3012 is sleeved with a first rotating driving gear 3013, and the first rotating driving gear 3013 is synchronously rotatably connected with the supporting platform connecting shaft 3012, the rotating output shaft 3011-1 of the object to be welded driving member 3011 is sleeved with a second rotating driving gear 3014, and the second rotating driving gear 3014 is synchronously rotatably connected with the rotating output shaft 3011-1 of the object to be welded driving member 3011, and the first rotating driving gear 3013 is meshed with the second rotating gear.

[0143] By adopting the above technical solution, the rotation output shaft 3011-1 of the object-to-be-welded driving member 3011 rotates synchronously to rotate the second rotation driving gear 3014. Since the second rotation gear is meshed with the first rotation gear, the second rotation gear rotates and synchronously drives the bearing platform connecting shaft 3012 to rotate, thereby driving the object-to-be-welded bearing platform 302 to rotate.

[0144] Specifically, the inner ring of the first rotating gear is recessed with a first gear limiting groove 3013-1, and correspondingly, the supporting platform connecting shaft 3012 is recessed with a second gear limiting groove 3012-2 opposite to the first gear limiting groove 3013-1 at the place where the first rotating gear is installed, and a first gear limiting block is inserted into the first gear limiting groove 3013-1 and the second gear limiting groove 3012-2 to achieve synchronous rotation of the two; the inner ring of the second rotating gear is recessed with a third gear limiting groove 3014-1, and correspondingly, the rotating output shaft 3011-1 of the driving member 3011 for the object to be welded is recessed with a fourth rotating limiting groove opposite to the third gear limiting groove 3014-1 at the place where the second rotating gear is installed, and a second gear limiting block is inserted into the third gear limiting groove 3014-1 and the fourth gear limiting groove 3011-2 to achieve synchronous rotation of the two; the driving member 3011 for the object to be welded adopts a motor.

[0145] Furthermore, the object-to-be-welded supporting platform 302 includes a supporting platform body 3021, a positioning plate 3022, and a plurality of supporting members 3023. The positioning plate 3022 is arranged on the supporting platform body 3021, and the positioning plate 3022 is recessed to form a positioning groove 3022-1 that matches the portion of the first object to be welded 100 that protrudes from the second object to be welded 200. The plurality of supporting members 3023 are arranged on the supporting platform body 3021 and around the positioning plate 3022. The height of the supporting member 3023 matches the distance from the supporting platform body 3021 at which the supporting member is located to the outer wall of the second object to be welded 200.

[0146] By adopting the above technical scheme, the support platform 302 for the objects to be welded is more reasonable. The setting of the positioning plate 3022 can facilitate the operator to position the second object to be welded 200 installed with the first object to be welded 100 on the support platform body 3021. The setting of the plurality of support members 3023 can enable the second object to be welded 200 installed with the first object to be welded 100 to be stably and reliably placed on the support platform body 3021. Specifically, four support members 3023 are provided.

[0147] Furthermore, the second object to be welded 200 has a cylindrical structure, and the support member 3023 includes a caster 3023-1 and a caster bracket 3023-2, the caster bracket 3023-2 is arranged on the supporting platform body 3021, the caster 3023-1 is rotatably arranged on the caster bracket 3023-2, and the rotation axis of the caster 3023-1 is parallel to the axis of the second object to be welded 200.

[0148] The above technical solution is adopted to facilitate the operator to rotate the second object to be welded 200, which is convenient for actual operation; for example, if multiple first objects to be welded 100 need to be installed on the second object to be welded 200, after the internal welding seam 300 formed by a first object to be welded 100 is welded, the operator can lift the second object to be welded 200 so that the first object to be welded 100 at this location is separated from the positioning groove 3022-1, and after rotating it to a certain angle, the second object to be welded 200 can be put down. At this time, the operator can rely on the casters 3023-1 to rotate the second object to be welded 200 to the next first object to be welded 100, and lift the second object to be welded 200 so that the first object to be welded 100 at this location is placed in the positioning groove 3022-1.

[0149] Furthermore, the object-to-be-welded carrying platform 302 is penetrated with a first welding matching through-hole 3024 through which one end of the welding mechanism 1 provided with a welding gun 101 can pass, and when the second object-to-be-welded 200 mounted with the first object-to-be-welded 100 is placed on the object-to-be-welded carrying platform 302 and the connecting opening 200-1 faces the side of the object-to-be-welded carrying platform 302, the first welding matching through-hole 3024 is opposite to the inner hole 100-1 of the welding object of the first object-to-be-welded 100; the carrying platform connecting shaft 3012 is at A second welding cooperation through-hole 3012-1 is provided at a position opposite to the first welding cooperation through-hole 3024, and the second welding cooperation through-hole 3012-1 can accommodate one end of the welding mechanism 1 provided with a welding gun 101. The welding mechanism 1 is provided with at least one end of the welding gun 101 which can be telescopically arranged in the first welding cooperation through-hole 3024 and the second welding cooperation through-hole 3012-1, and the axial direction of the first welding cooperation through-hole 3024 and the second welding cooperation through-hole 3012-1 is a first direction.

[0150] The adoption of the above technical solution makes the welding equipment more reasonable.

[0151] Furthermore, the welding equipment includes a base frame 12, the base frame 12 includes a substrate 1201, the platform 302 for carrying the object to be welded is located on one side of the substrate 1201, the substrate 1201 is provided with a connecting shaft mating hole 12011, and the substrate 1201 is provided with a bearing seat 13 at the connecting shaft mating hole 12011, the supporting platform connecting shaft 3012 is passed through the bearing seat 13, and a bearing 14 is provided between the outer wall of the supporting platform connecting shaft 3012 and the bearing seat 13.

[0152] By adopting the above technical solution, the base frame 12 provides an installation support foundation for other mechanisms of the welding equipment; the setting of the bearing 14 can reduce the friction force of the rotation of the bearing platform connecting shaft 3012, and make the rotation of the bearing platform connecting shaft 3012 more stable;

[0153] Specifically, the bearing 14 includes a first bearing 1401 and a second bearing 1402. The first bearing 1401 is arranged closer to the substrate 1201 than the second bearing 1402. A spacer sleeve 15 is arranged between the first bearing 1401 and the second bearing 1402. The first bearing 1401 adopts a tapered roller bearing, and the second bearing 1402 adopts a deep groove ball bearing.

[0154] The first rotating gear is located on the side of the second bearing 1402 away from the first bearing 1401, and a spacer sleeve 15 is arranged between the first rotating gear and the second bearing 1402. The supporting platform connecting shaft 3012 is provided with a limiting nut 16 on the side of the first rotating gear away from the second bearing 1402, and two limiting nuts 16 are arranged to realize the installation of the first bearing 1401, the second bearing 1402 and the first rotating gear.

[0155] Furthermore, the welding driving mechanism 2 and the object-to-be-welded driving member 3011 are arranged on the base frame 12 .

[0156] The above technical solution makes the welding device more reasonable; specifically, the welding device includes a welding drive connecting plate 17, and the welding drive connecting plate 17 is fixedly arranged on the substrate 1201;

[0157] The second welding drive module 203 is arranged on the first sliding connection member 2022 and slides synchronously with the first sliding connection member 2022. When the second sliding connection member 2032 is connected to the welding mechanism 1, the first sliding drive member 2021 is installed on the welding drive connecting plate 17 through the first drive mounting bracket 18, the first slide rail 2023 is fixedly arranged on the welding drive connecting plate 17, the first limit fixing plate 8 and the second limit fixing plate 9 are fixedly arranged on the welding drive connecting plate 17, the second sliding drive member 2031 is installed on the first sliding connection member 2022 through the second drive mounting bracket 19, and the third limit fixing plate 10 and the fourth limit fixing plate 11 are arranged on the first sliding connection member 2022; further, the three limit fixing plates are formed as the second drive mounting bracket 19;

[0158] The first welding drive module 202 is arranged on the second sliding connection 2032 and slides synchronously with the second sliding connection 2032. When the first sliding connection 2022 is connected to the welding mechanism 1, the second sliding drive 2031 is installed on the welding drive connecting plate 17 through the second drive mounting bracket 19, the second slide rail 2033 is fixedly arranged on the welding drive connecting plate 17, the third limit fixing plate 10 and the fourth limit fixing plate 11 are fixedly arranged on the welding drive connecting plate 17, the first sliding drive 2021 is installed on the second sliding connection 2032 through the first drive mounting bracket 18, the first limit fixing plate 8 and the second limit fixing plate 9 are arranged on the second sliding connection 2032; further, the three limit fixing plates are formed as the second drive mounting bracket 19.

[0159] Furthermore, the base frame 12 includes a plurality of base frame legs 1202 , and the plurality of base frame legs 1202 are arranged on a side of the base plate 1201 away from the to-be-welded object carrying platform 302 .

[0160] The above technical solution makes the welding equipment more reasonable; specifically, four base legs 1202 are provided and are respectively located at the four corners of the base plate 1201 .

[0161] See also Figures 1 to 6 A welding method, using the above welding equipment, has the following specific steps:

[0162] S1, preparing objects to be welded, after the first object to be welded 100 is mounted to the connection opening 200-1 of the second object to be welded 200, welding and sealing the outer welds of the first object to be welded 100 and the second object to be welded 200;

[0163] S2, placing the second object to be welded 200 with the first object to be welded 100 installed in the welding device, and the second object to be welded 200 with the first object to be welded 100 installed is located in the first direction of the welding mechanism 1, and the welding object inner hole 100-1 of the first object to be welded 100 is opposite to the end of the welding mechanism 1 provided with the welding gun 101;

[0164] S3, the welding drive mechanism 2 drives the welding mechanism 1 to move along the first direction so that one end of the welding mechanism 1 provided with the welding gun 101 extends into the interior of the second object to be welded 200 through the inner hole 100-1 of the first object to be welded 100;

[0165] S4, the welding drive mechanism 2 drives the welding mechanism 1 to move along the second direction so that the welding head 1011 of the welding gun 101 is aligned with the internal welding seam 300;

[0166] S5, the object-to-be-welded driving mechanism 3 drives the second object-to-be-welded 200 mounted with the first object-to-be-welded 100 to move, or the object-to-be-welded driving mechanism 3 drives the second object-to-be-welded 200 mounted with the first object-to-be-welded 100 to move, and at the same time, the welding driving mechanism 2 drives the welding mechanism 1 to move, so that the welding gun 101 welds the internal welding seam 300 at the location;

[0167] S6, the welding drive mechanism 2 drives the welding mechanism 1 to reset.

[0168] The above technical solution perfectly solves the welding problem of the internal welding seam 300 formed between the first object to be welded 100 and the second object to be welded 200 when the inner hole 100-1 of the first object to be welded 100 is a small hole, and greatly improves the welding efficiency and quality of the product, the flatness of the weld, the welding accuracy, and the probability of welding failure.

[0169] Specifically, in S1, the first object to be welded 100 is a flange seat, and the second object to be welded 200 is a barrel body; the barrel body is a combination and welding of an upper half barrel 200-2 and a lower half barrel 200-3, and a belt-shaped barrel hoop 200-4 is provided at the joint of the upper and lower half barrels 200-3;

[0170] If the second object to be welded 200 is mounted with a plurality of first objects to be welded 100 , the operator may loop through the above steps S1 to S6 to weld the internal weld seams 300 formed by mounting all the first objects to be welded 100 to the second object to be welded 200 .

[0171] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0172] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A welding device, characterized in that: When a first object to be welded (100) is mounted on a connecting opening (200-1) of a second object to be welded (200), welding is performed on an internal welding seam (300) formed at the connection between the two objects, comprising: A welding mechanism (1), comprising a welding gun (101) having a welding head (1011), wherein the welding mechanism (1) is provided with one end of the welding gun (101) capable of extending into the interior of a second object to be welded (200) through an inner hole (100-1) of a first object to be welded (100), and the welding head (1011) is provided with a connection opening (200-1) side facing the second object to be welded (200) when the welding gun (101) extends into the interior of the second object to be welded (200) through the inner hole (100-1) of the welding object; A welding drive mechanism (2) connected to the welding mechanism (1) for driving the welding mechanism (1) to move along a first direction, and for driving the welding mechanism (1) to move along a second direction perpendicular to the first direction; and a welding object driving mechanism (3) for driving a second welding object (200) mounted with a first welding object (100) to move, wherein the movement path of the second welding object (200) mounted with the first welding object (100) driven by the welding object driving mechanism (3) matches the shape of an internal welding seam (300), or the movement of the second welding object (200) mounted with the first welding object (100) driven by the welding object driving mechanism (3) matches the movement of the welding mechanism (1) driven by the welding driving mechanism (2) so that the movement path of the welding head (1011) relative to the second welding object (200) matches the shape of an internal welding seam (300).

2. The welding device according to claim 1, characterized in that: The welding mechanism (1) comprises a supporting connection member (102), wherein the supporting connection member (102) comprises a first supporting connection section (1021) and a second supporting connection section (1022), wherein the first supporting connection section (1021) is extended along the first direction, and its two ends are respectively formed as a first supporting end (1021-1) and a second supporting end (1021-2), wherein the welding gun (101) is arranged on one side of the second supporting end (1021-2), and the second supporting connection section (102 2) are respectively connected to the second support end (1021-2) and the welding gun (101), and the welding head (1011) of the welding gun (101) is arranged toward the first support end (1021-1); in the second direction, the distance from the side of the welding gun (101) away from the second support end (1021-2) to the side of the second support end (1021-2) away from the welding gun (101) is less than or equal to the aperture of the inner hole (100-1) of the first object to be welded (100); The welding gun (101) is an argon arc welding gun (101), the supporting connection piece (102) is hollow to form a vent pipe, and the second supporting connection section (1022) of the supporting connection piece (102) is connected to and communicates with the air inlet of the welding gun (101); The welding drive mechanism (2) comprises a welding connection fixing structure (201) for connecting and fixing the welding mechanism (1), the welding connection structure comprising a first connection fixing block (2011) and a second connection fixing block (2012), the first connection fixing block (2011) and the second connection fixing block (2012) being arranged opposite to each other and being detachably connected, a first connection fixing groove (2011-1) matching the first supporting connection section (1021) being recessed on one side of the first connection fixing block (2011) facing the second connection fixing block (2012), and a second connection fixing groove (2012-1) matching the first supporting connection section (1021) being recessed on one side of the second connection fixing block (2012) facing the first connection fixing block (2011).

3. The welding device according to claim 1, characterized in that: The welding drive mechanism (2) comprises a first welding drive module (202) for driving the welding mechanism (1) to move along the first direction, and a second welding drive module (203) for driving the welding mechanism (1) to move along the second direction; The first welding driving module (202) comprises a first sliding driving member (2021) and a first sliding connecting member (2022), wherein the first sliding driving member (2021) is used to drive the first sliding connecting member (2022) to slide along the first direction; The second welding driving module (203) comprises a second sliding driving member (2031) and a second sliding connecting member (2032), wherein the second sliding driving member (2031) is used to drive the second sliding connecting member (2032) to slide along the second direction; The second welding drive module (203) is arranged on the first sliding connection (2022) and slides synchronously with the first sliding connection (2022), and the second sliding connection (2032) is connected to the welding mechanism (1); or the first welding drive module (202) is arranged on the second sliding connection (2032) and slides synchronously with the second sliding connection (2032), and the first sliding connection (2022) is connected to the welding mechanism (1).

4. The welding device according to claim 3, characterized in that: The first welding drive module (202) comprises a first slide rail (2023) and a first slider (2024); the first slide rail (2023) is extended along the first direction; the first slider (2024) is slidably arranged on the first slide rail (2023) along the first slide rail (2023); and the first sliding connection member (2022) is arranged on the first slider (2024); The second welding driving module (203) comprises a second slide rail (2033) and a second slider (2034); the second slide rail (2033) is extended along the second direction; the second slider (2034) is slidably arranged on the second slide rail (2033) along the second slide rail (2033); and the second sliding connection member (2032) is arranged on the second slider (2034); The first sliding driving member (2021) is a cylinder, and the extension direction of the driving rod of the first sliding driving member (2021) is the first direction; or the first sliding driving member (2021) is a servo motor, and its output shaft drives the first screw rod extending along the first direction to rotate, and the first sliding connecting member (2022) is threadedly matched with the first screw rod; The second sliding drive member (2031) adopts a cylinder, and the extension direction of the driving rod of the second sliding drive member (2031) is the second direction; or the second sliding drive member (2031) adopts a servo motor, and its output shaft drives the second screw rod (2035) extending along the second direction to rotate, and the second sliding connection member (2032) is threadedly matched with the second screw rod (2035).

5. The welding device according to claim 3, characterized in that: The first limiting member (4) and the second limiting member (5) are respectively located on two sides of the first sliding connection member (2022) in the first direction, and the first limiting member (4) and the second limiting member (5) are arranged at a distance in the first direction to limit the movement range of the first sliding connection member (2022) in the first direction; The welding device comprises a third limiting member (6) and a fourth limiting member (7), wherein the third limiting member (6) and the fourth limiting member (7) are respectively located on two sides of the second sliding connection member (2032) in the second direction, and the third limiting member (6) and the fourth limiting member (7) are arranged at a distance in the second direction to limit the movement range of the second sliding connection member (2032) in the second direction; The first limiting member (4) and the second limiting member (5) are adjustable so as to be able to move closer to or farther from each other, and the third limiting member (6) and the fourth limiting member (7) are adjustable so as to be able to move closer to or farther from each other; The first sliding connection member (2022) is provided with a first limit fixing plate (8) and a second limit fixing plate (9) on both sides in the first direction, the first limit member (4) and the second limit member (5) are screws, the first fixing plate is provided with a first adjustment screw hole (801) matching the first limit member (4), the first limit member (4) can be threadedly adjusted in the first adjustment screw hole (801), the second fixing plate is provided with a second adjustment screw hole (901) matching the second limit member (5), the second limit member (5) can be threadedly adjusted in the second adjustment screw hole (901); The second sliding connection member (2032) is provided with a third limiting fixing plate (10) and a fourth limiting fixing plate (11) on both sides in the second direction, respectively; the third limiting member (6) and the fourth limiting member (7) are screws; the third fixing plate is provided with a third adjusting screw hole (1001) matching the third limiting member (6); the third limiting member (6) is thread-adjustably arranged in the third adjusting screw hole (1001); the fourth fixing plate is provided with a fourth adjusting screw hole (1101) matching the fourth limiting member (7); the fourth limiting member (7) is thread-adjustably arranged in the fourth adjusting screw hole (1101).

6. The welding device according to claim 1, characterized in that: The object to be welded driving mechanism (3) comprises an object to be welded driving assembly (301) and an object to be welded carrying platform (302), wherein the object to be welded carrying platform (302) is used to carry and place a second object to be welded (200) on which a first object to be welded (100) is mounted, and the object to be welded driving assembly (301) is used to drive the object to be welded carrying platform (302) to move, and the movement path of the object to be welded driving assembly (301) to drive the object to be welded carrying platform (302) to move matches the shape of the internal welding seam (300).

7. The welding device according to claim 6, characterized in that: The internal welding seam (300) is circular, and the object-to-be-welded driving mechanism (3) drives the second object-to-be-welded (200) on which the first object-to-be-welded (100) is mounted to rotate around the central axis of the internal welding seam (300); The object to be welded driving assembly (301) comprises an object to be welded driving member (3011) and a bearing platform connecting shaft (3012), wherein the bearing platform connecting shaft (3012) is arranged on the object to be welded bearing platform (302), and when a second object to be welded (200) mounted with a first object to be welded (100) is placed on the object to be welded bearing platform (302) and the connecting opening (200-1) faces the side of the object to be welded bearing platform (302), the axis of the bearing platform connecting shaft (3012) and the center of the internal welding seam (300) formed by the connecting opening (200-1) are aligned with each other. The axes are colinear, the supporting platform connecting shaft (3012) is sleeved with a first rotating driving gear (3013), and the first rotating driving gear (3013) is synchronously rotatably connected with the supporting platform connecting shaft (3012), the rotating output shaft (3011-1) of the object to be welded driving member (3011) is sleeved with a second rotating driving gear (3014), and the second rotating driving gear (3014) is synchronously rotatably connected with the rotating output shaft (3011-1) of the object to be welded driving member (3011), and the first rotating driving gear (3013) is meshed with the second rotating gear.

8. The welding device according to claim 6, characterized in that: The object-to-be-welded carrying platform (302) comprises a carrying platform body (3021), a positioning plate (3022), and a plurality of supporting members (3023); the positioning plate (3022) is arranged on the carrying platform body (3021), and the positioning plate (3022) is recessed to form a positioning groove (3022-1) matching a portion of the first object to be welded (100) protruding from the second object to be welded (200); a plurality of supporting members (3023) are arranged on the carrying platform body (3021) and around the positioning plate (3022); the height of the supporting members (3023) matches the distance from the carrying platform body (3021) where the supporting members (3023) are located to the outer wall of the second object to be welded (200); The second object to be welded (200) is in a cylindrical structure, and the support member (3023) includes a caster (3023-1) and a caster bracket (3023-2), wherein the caster bracket (3023-2) is arranged on the supporting platform body (3021), and the caster (3023-1) is rotatably arranged on the caster bracket (3023-2), and the rotation axis of the caster (3023-1) is parallel to the axis of the second object to be welded (200).

9. The welding device according to claim 7, characterized in that: The object-to-be-welded carrying platform (302) is provided with a first welding matching through-hole (3024) through which one end of the welding mechanism (1) provided with a welding gun (101) can pass, and when the second object-to-be-welded (200) mounted with the first object-to-be-welded (100) is placed on the object-to-be-welded carrying platform (302) and the connecting opening (200-1) faces the object-to-be-welded carrying platform (302), the first welding matching through-hole (3024) is opposite to the inner hole (100-1) of the welding object of the first object-to-be-welded (100); the carrying platform connecting shaft (3012) is connected to the welding platform connecting shaft (3012) at the same time as the welding platform connecting shaft (3012). A second welding matching through-hole (3012-1) is provided at a position opposite to the first welding matching through-hole (3024), and the second welding matching through-hole (3012-1) is capable of accommodating one end of the welding mechanism (1) provided with a welding gun (101), and at least one end of the welding mechanism (1) provided with a welding gun (101) is telescopically arranged in the first welding matching through-hole (3024) and the second welding matching through-hole (3012-1), and the axial direction of the first welding matching through-hole (3024) and the second welding matching through-hole (3012-1) is a first direction; The welding equipment comprises a base frame (12), the base frame (12) comprises a substrate (1201), the object-to-be-welded carrying platform (302) is located on one side of the substrate (1201), the substrate (1201) is provided with a connecting shaft matching hole (12011), and the substrate (1201) is provided with a bearing seat (13) at the connecting shaft matching hole (12011), the carrying platform connecting shaft (3012) is passed through the bearing seat (13), and a bearing (14) is provided between the outer wall of the carrying platform connecting shaft (3012) and the bearing seat (13); The welding drive mechanism (2) and the object-to-be-welded drive member (3011) are arranged on the base frame (12); The base frame (12) comprises a plurality of base frame legs (1202), and the plurality of base frame legs (1202) are arranged on a side of the base plate (1201) away from the support platform (302) for the object to be welded.

10. A welding method, characterized in that: Using the welding equipment according to any one of claims 1 to 9, the specific steps are as follows: S1, preparing objects to be welded, after the first object to be welded (100) is mounted on the connection opening (200-1) of the second object to be welded (200), welding and sealing the external weld seams of the first object to be welded (100) and the second object to be welded (200); S2, placing a second object to be welded (200) mounted with the first object to be welded (100) in the welding device, wherein the second object to be welded (200) mounted with the first object to be welded (100) is located in a first direction of the welding mechanism (1), and the inner hole (100-1) of the first object to be welded (100) is opposite to an end of the welding mechanism (1) provided with a welding gun (101); S3, the welding drive mechanism (2) drives the welding mechanism (1) to move along the first direction so that one end of the welding mechanism (1) provided with a welding gun (101) extends through the inner hole (100-1) of the first object to be welded (100) into the interior of the second object to be welded (200); S4, the welding drive mechanism (2) drives the welding mechanism (1) to move along the second direction so that the welding head (1011) of the welding gun (101) is aligned with the internal welding seam (300) at that location; S5, the object-to-be-welded driving mechanism (3) drives the second object-to-be-welded (200) on which the first object-to-be-welded (100) is mounted to move, or the object-to-be-welded driving mechanism (3) drives the second object-to-be-welded (200) on which the first object-to-be-welded (100) is mounted to move, and at the same time the welding driving mechanism (2) drives the welding mechanism (1) to move, so that the welding gun (101) welds the internal welding seam (300) at that location; S6, the welding drive mechanism (2) drives the welding mechanism (1) to reset.

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