A welding device for forming a bearing metal bushing

Abstract

The application discloses a welding device for bearing metal bushing forming and relates to the technical field of welding, and aims to solve the technical problem of bearing metal bushing welding deformation, comprising a machine case, a welding mechanism, a support box body, an integrated seat, an inner lining mechanism and a driving mechanism. Through the structural design of the inner lining mechanism, the closed annular lining formed by the plurality of inner lining strips A and the plurality of inner lining strips B provides continuous and uniform circumferential rigid support for the inner wall of the thin-wall bushing body, through the design of the cooling flow channel, the water return ring groove and the water supply ring groove, the cooling flow channel adjacent to the welding heat source is communicated with the maximum width section during the welding process, the communication cross-sectional area of the inlet or outlet of the cooling flow channel and the annular groove reaches the maximum, the cooling liquid flow through the inner lining strip is increased to the maximum, the targeted strengthening cooling of the thin-wall bushing is realized, the thin-wall bushing welding deformation is inhibited, and the technical problem of bearing metal bushing welding deformation is solved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically, to a welding apparatus for forming bearing metal bushings. Background Technology

[0002] Oil film bearings are core precision components of transmission systems in major equipment. Their operational stability and lifespan directly depend on the manufacturing precision of the bearing bushing. Some bearing metal bushings adopt a split design, that is, the thin-walled bushing body and the heavy connecting plate need to be welded together by an annular weld.

[0003] Currently, the tooling commonly used in this welding process mainly addresses the geometric positioning problem. The core design of these tools is to ensure the alignment accuracy and relative position of the sleeve and the connecting plate before welding. During welding, the thin-walled area undergoes plastic deformation at high temperatures due to the decrease in the material's yield strength, resulting in the bushing becoming out of round, twisted, or having excessive waviness. Post-weld correction is extremely difficult and often leads to the direct scrapping of precision workpieces. In view of this, we propose a welding device for forming bearing metal bushings. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device for forming bearing metal bushings, so as to solve the technical problem of easy deformation during welding of bearing metal bushings.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a welding device for forming bearing metal bushings, comprising a housing, a welding mechanism disposed within the housing, a support box disposed on one side of the welding mechanism, an integrated seat disposed on the support box, and an inner lining mechanism disposed on the integrated seat; the inner lining mechanism comprises a plurality of inner lining strips A and a plurality of inner lining strips B arranged in a ring-shaped, equally spaced structure, the plurality of inner lining strips A and B being arranged alternately, the inner lining strips B having a fan-shaped structure, and the plurality of inner lining strips A and B being able to move back and forth in a centripetal direction, when the plurality of inner lining strips A and B... When B is at the eccentric end, the plurality of inner lining strips A and B form a closed annular inner lining; the integrated base is provided with a return water annular groove and a supply water annular groove, the radial width of the return water annular groove and the supply water annular groove are not uniform, the radial width is the largest in the flow channel section corresponding to the fixed welding heat source position, and the radial width of the other sections is smaller than the maximum width; both inner lining strips A and B are provided with cooling flow channels, the water inlet end of the cooling flow channel is connected to the supply water annular groove, and the cooling flow channel is connected to the return water annular groove; the integrated base is provided with a drive mechanism for driving the plurality of inner lining strips A and B to move and rotate. This invention, through structural design of the inner liner mechanism, provides continuous and uniform circumferential rigid support to the inner wall of the thin-walled bushing body during the welding process of the bearing metal bushing by a closed annular inner liner formed by several inner liner strips A and B, effectively suppressing thermal stress deformation during welding and maintaining the roundness of the bushing's inner hole. By designing cooling channels on both inner liner strips A and B, the thin-walled bushing can be cooled during welding, reducing its deformation. Due to the low temperature at the welding point of the thin-walled bushing... The design of the return water ring groove and the supply water ring groove is optimized to maximize the cross-sectional area of ​​the cooling channel connected to the maximum width section near the welding heat source. This maximizes the flow rate of coolant flowing through the inner liner, rapidly dissipating heat from the welding joint of the thin-walled bushing. This effectively suppresses the temperature rise and welding thermal deformation of the workpiece in this local area, achieving targeted enhanced cooling of the thin-walled bushing. This further reduces the deformation of the thin-walled bushing and solves the technical problem of easy deformation during the welding of bearing metal bushings.

[0006] Preferably, the top of the integrated base has a rotating groove A, the bottom of the rotating groove A has a movable groove, one side of the integrated base has a water supply hole communicating with the water supply ring groove and a return water hole communicating with the return water ring groove in an upper and lower structure, the bottom of the movable groove has a rotating groove B, the bottom of the rotating groove B has an installation cavity A, one side of the rotating groove B has a limiting slide groove, and the eccentric side of the limiting slide groove has an installation cavity B.

[0007] Preferably, both the return water ring groove and the supply water ring groove are located at the bottom of the rotating groove A. The movable groove, the return water ring groove, and the supply water ring groove are arranged in an inner-outer structure. At the bottom of the rotating groove A, relative to the positions of the return water ring groove and the supply water ring groove, there are grooves A, B, and C arranged in an inner-outer structure. Sealing rings A, B, and C are respectively embedded in grooves A, B, and C. The opposite ends of sealing rings A and B are adapted to the two ends of the return water ring groove, and the opposite ends of sealing rings B and C are adapted to the two ends of the supply water ring groove.

[0008] Preferably, the lining mechanism further includes a rotating ring, which is rotatably mounted on the rotating groove A. An inner ring is fixedly provided at the bottom end of the rotating ring. The top ends of the sealing ring A, the sealing ring B, and the sealing ring C are all movably engaged with the bottom end of the inner ring. The top end of the rotating ring extends out of the rotating groove A and is fixedly provided with a bearing ring.

[0009] Preferably, the inner ring has a plurality of return water through holes communicating with the return water ring groove and a plurality of supply water through holes communicating with the supply water ring groove in an annular and equally spaced structure. Sliding grooves A are provided on both sides of the supply water through holes, and a plurality of sliding grooves B are provided on the inner edge surface of the inner ring relative to the positions of the plurality of supply water through holes.

[0010] Preferably, the inner edge of the bearing ring has a plurality of movable holes A in an annular, equally spaced structure. A centripetal shaft is movably connected to each movable hole A. A spring groove is provided at the eccentric end of the centripetal shaft. The spring groove and the movable hole A are elastically connected by a spring A. The sum of the number of the plurality of inner lining strips A and the plurality of inner lining strips B is equal to the number of the plurality of centripetal shafts. The centripetal shaft is fixedly connected at its centripetal end to the corresponding eccentric end of the inner lining strip A or inner lining strip B.

[0011] Preferably, both the inner lining strip A and the inner lining strip B are provided with U-shaped cooling grooves, and the two ends of the U-shaped cooling grooves are respectively connected to a return water adaptation groove and a supply water adaptation groove; the bottom end of the return water adaptation groove is connected to a folded hose A, and the bottom ends of several folded hoses A are respectively connected to the top ends of several return water through holes; the bottom end of the supply water adaptation groove is connected to a folded hose B, and the bottom ends of several folded hoses B are respectively connected to the top ends of several supply water through holes; the cooling channel is composed of the supply water through holes, the folded hoses B, the supply water adaptation groove, the U-shaped cooling groove, the return water adaptation groove, the folded hoses A, and the return water through holes; both sides of the bottom end of the inner lining strip A and the inner lining strip B are fixed with supporting slide plates, and the bottom ends of several supporting slide plates are respectively slidably connected to several sliding grooves A; a sliding guide groove A is provided on the centripetal side of the bottom end of the inner lining strip A, and a sliding guide groove B is provided on the centripetal side of the bottom end of the inner lining strip B.

[0012] Preferably, the driving mechanism includes a column disposed within the movable groove. The bottom end of the column is fixed with a plurality of guide plates A and a plurality of guide plates B in an annular, equally spaced structure. The guide plates A and B are arranged alternately. The guide plates A are respectively in movable engagement with a plurality of sliding guide grooves A, and the guide plates B are respectively in movable engagement with a plurality of sliding guide grooves B. The sliding grooves B are slidably connected to the corresponding guide plate A or guide plate B. The length of the guide plate B is greater than the length of the guide plate A.

[0013] Preferably, the driving mechanism further includes a motor A and a ring block. The motor A is fixedly mounted on the mounting cavity A. The ring block is rotatably mounted on the rotating groove B. A lead screw A is rotatably connected to the ring block. The lead screw A is threadedly connected to the column. The bottom end of the lead screw A passes through the mounting cavity A and is fixedly connected to the output shaft of the motor A. The top of the ring block has a plurality of slide rods fixedly mounted in an annular, equally spaced structure. The slide rods are slidably connected to the column. A movable hole B is opened on the surface of the ring block. A limiting shaft is movably connected to the movable hole B. The limiting shaft is movably engaged with the limiting groove. The limiting shaft and the movable hole B are elastically connected by a spring B.

[0014] Preferably, the driving mechanism further includes an adjusting block and a motor B. The adjusting block is slidably disposed on the limiting groove. The centripetal end of the adjusting block has an arc surface structure adapted to the rotating groove B. The eccentric end of the adjusting block is threadedly connected to a lead screw B. The motor B is fixedly disposed on the mounting cavity B. The eccentric end of the lead screw B passes through the mounting cavity B and is fixedly connected to the output shaft of the motor B.

[0015] The beneficial effects of this invention are:

[0016] 1. Through the structural design of the inner liner mechanism, the present invention provides continuous and uniform circumferential rigid support to the inner wall of the thin-walled bushing body by a closed annular inner liner formed by several inner liner strips A and several inner liner strips B during the welding process of the bearing metal bushing, suppressing thermal stress deformation during the welding process and maintaining the roundness of the bushing inner hole.

[0017] By designing cooling channels on both inner liner A and inner liner B, the thin-walled bushing can be cooled by the inner liner A and inner liner B during the welding process, thereby reducing the deformation of the thin-walled bushing.

[0018] Because the temperature is highest at the weld joint of the thin-walled bushing, further design of the return water annular groove and the supply water annular groove allows the cooling channel adjacent to the welding heat source to be connected to the widest section. The cross-sectional area of ​​the connection between the inlet or outlet of the cooling channel and the annular groove is maximized, thereby maximizing the flow rate of coolant flowing through the inner liner. This quickly removes heat from the weld joint of the thin-walled bushing, effectively suppressing the temperature rise and welding thermal deformation of the workpiece in this local area. This achieves targeted enhanced cooling of the thin-walled bushing, further reducing the deformation of the thin-walled bushing and solving the technical problem of easy deformation during welding of bearing metal bushings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a partial structural schematic diagram of the present invention.

[0021] Figure 3 This is a cross-sectional structural diagram of the integrated base, liner mechanism, and drive mechanism of the present invention.

[0022] Figure 4 This is a cross-sectional structural diagram of the integrated base of the present invention.

[0023] Figure 5 for Figure 4 An enlarged schematic diagram of the structure of part A.

[0024] Figure 6 This is a schematic diagram showing the disassembled structure of the lining mechanism and the drive mechanism of the present invention.

[0025] Figure 7 This is a partial structural cross-sectional schematic diagram of the lining mechanism of the present invention.

[0026] Figure 8 This is a cross-sectional schematic diagram of the lining mechanism of the present invention.

[0027] Figure 9 This is a schematic diagram showing the disassembled structure of the inner lining strip A and inner lining strip B of the present invention.

[0028] Figure 10 This is a schematic diagram of the disassembled structure of the drive mechanism of the present invention.

[0029] Figure 11 This is a partial structural cross-sectional schematic diagram of the drive mechanism of the present invention.

[0030] Explanation of the labels in the diagram:

[0031] 1. Chassis; 2. Welding mechanism; 3. Support housing; 4. Integrated base; 5. Inner lining mechanism; 6. Drive mechanism;

[0032] 40. Mounting cavity B; 41. Rotary groove A; 42. Movable groove; 43. Return water ring groove; 44. Supply water ring groove; 45. Supply water hole; 46. Return water hole; 47. Rotary groove B; 48. Mounting cavity A; 49. Limiting slide groove;

[0033] 441. Sealing ring A; 442. Sealing ring B; 443. Sealing ring C;

[0034] 51. Liner strip A; 52. Liner strip B; 53. Swivel; 54. Inner ring; 55. Bearing ring;

[0035] 501. U-shaped cooling tank; 502. Return water adaptation tank; 503. Supply water adaptation tank; 504. Folded hose A; 505. Folded hose B; 506. Support slide plate; 507. Sliding guide groove A; 508. Sliding guide groove B;

[0036] 541. Return water through hole; 542. Supply water through hole; 543. Slide A; 544. Slide B;

[0037] 551. Movable hole A; 552. Centripetal shaft; 553. Spring groove; 554. Spring A;

[0038] 60. Column; 61. Motor A; 62. Ring block; 63. Lead screw A; 64. Slide rod; 65. Adjusting block; 66. Lead screw B; 67. Motor B;

[0039] 601. Guide plate A; 602. Guide plate B;

[0040] 621. Movable hole B; 622. Limiting shaft; 623. Spring B. Detailed Implementation

[0041] like Figures 1 to 11 As shown, the present invention relates to a welding device for forming bearing metal bushings, comprising a housing 1, a welding mechanism 2 disposed inside the housing 1, a support box 3 disposed on one side of the welding mechanism 2, an integrated seat 4 disposed on the support box 3, and an inner liner mechanism 5 disposed on the integrated seat 4.

[0042] In embodiments of the present invention, such as Figure 3 and Figure 6As shown, the inner lining mechanism 5 includes several inner lining strips A51 and B52 arranged in a ring-shaped, equally spaced structure. The inner lining strips A51 and B52 are arranged alternately, with each inner lining strip B52 having a fan-shaped structure. All inner lining strips A51 and B52 can move back and forth in the centripetal direction. When all inner lining strips A51 and B52 are at their eccentric ends, they form a closed-loop annular inner lining. Through the structural design of the inner lining mechanism 5, this invention provides continuous and uniform circumferential rigid support to the inner wall of the thin-walled bushing body during the welding process of the bearing metal bushing. This effectively suppresses thermal stress deformation during welding and maintains the roundness of the bushing's inner hole.

[0043] In embodiments of the present invention, such as Figure 3 , Figure 4 and Figure 5 As shown, the integrated base 4 is provided with a return water ring groove 43 and a supply water ring groove 44. The radial widths of the return water ring groove 43 and the supply water ring groove 44 are not uniform. The radial width is the largest in the flow channel section corresponding to the fixed welding heat source position, and the radial width of the other sections is smaller than the maximum width. Cooling flow channels are provided on both the inner lining strip A51 and the inner lining strip B52. The water inlet end of the cooling flow channel is connected to the supply water ring groove 44, and the cooling flow channel is connected to the return water ring groove 43. The integrated base 4 is provided with a drive mechanism 6 for driving the movement and rotation of several inner lining strips A51 and several inner lining strips B52. This invention designs cooling channels on both inner liner strips A51 and B52, enabling them to cool the thin-walled bushing during welding and reducing its deformation. Furthermore, since the welding area of ​​the thin-walled bushing has the highest temperature, the invention further designs the return water annular groove 43 and the supply water annular groove 44. This connects the cooling channels near the welding heat source to the widest section, maximizing the cross-sectional area of ​​the connection between the inlet or outlet of the cooling channels and the annular groove. This maximizes the flow rate of coolant through the inner liner strip, rapidly dissipating heat from the welding area of ​​the thin-walled bushing and effectively suppressing temperature rise and welding thermal deformation in this localized area. This targeted and enhanced cooling of the thin-walled bushing further reduces its deformation and solves the technical problem of easy deformation during welding of bearing metal bushings.

[0044] In embodiments of the present invention, such as Figure 3 , Figure 4 and Figure 5As shown, the top of the integrated base 4 has a rotating groove A41, and the bottom of the rotating groove A41 has a movable groove 42. On one side of the integrated base 4, a water supply hole 45 communicating with the water supply ring groove 44 and a return water hole 46 communicating with the return water ring groove 43 are opened in sequence in an upper and lower structure. The bottom of the movable groove 42 has a rotating groove B47, and the bottom of the rotating groove B47 has an installation cavity A48. A limiting slide groove 49 is opened on one side of the rotating groove B47, and an installation cavity B40 is opened on the eccentric side of the limiting slide groove 49.

[0045] The support box 3 is equipped with a cooling mechanism. The water supply end of the cooling mechanism is connected to the water supply hole 45, and the water return end of the cooling mechanism is connected to the water return hole 46.

[0046] In embodiments of the present invention, such as Figure 4 and Figure 5 As shown, the return water ring groove 43 and the supply water ring groove 44 are both opened at the bottom of the rotating groove A41. The movable groove 42, the return water ring groove 43 and the supply water ring groove 44 are arranged in an inner and outer structure. At the bottom of the rotating groove A41, relative to the position of the return water ring groove 43 and the supply water ring groove 44, the grooves A, B and C are opened in an inner and outer structure respectively. Sealing rings A441, B442 and C443 are respectively embedded in the grooves A, B and C. The opposite ends of the sealing rings A441 and B442 are adapted to the two ends of the return water ring groove 43, and the opposite ends of the sealing rings B442 and C443 are adapted to the two ends of the supply water ring groove 44.

[0047] In embodiments of the present invention, such as Figure 6 As shown, the inner lining mechanism 5 also includes a rotating ring 53, which is rotatably mounted on the rotating groove A41. An inner ring 54 is fixedly provided at the bottom end of the rotating ring 53. The top ends of the sealing rings A441, B442 and C443 are all movably engaged with the bottom end of the inner ring 54. The top end of the rotating ring 53 extends out of the rotating groove A41 and is fixedly provided with a bearing ring 55.

[0048] In embodiments of the present invention, such as Figure 7 As shown, the inner ring 54 has a ring-shaped structure with equal spacing and several return water through holes 541 that communicate with the return water ring groove 43 and several supply water through holes 542 that communicate with the supply water ring groove 44. Sliding grooves A543 are provided on both sides of the supply water through holes 542, and several sliding grooves B544 are provided on the inner edge surface of the inner ring 54 relative to the positions of the several supply water through holes 542.

[0049] In embodiments of the present invention, such as Figure 7 As shown, the inner edge of the bearing ring 55 has a number of movable holes A551 in an annular, equally spaced structure. A centripetal shaft 552 is movably connected to the movable hole A551. A spring groove 553 is provided at the eccentric end of the centripetal shaft 552. The spring groove 553 and the movable hole A551 are elastically connected by a spring A554.

[0050] In embodiments of the present invention, such as Figure 8 and Figure 9 As shown, the sum of the number of inner lining strips A51 and B52 is equal to the number of centripetal shafts 552. The centripetal ends of the centripetal shafts 552 are fixedly connected to the eccentric ends of the corresponding inner lining strips A51 or B52. U-shaped cooling grooves 501 are provided inside both inner lining strips A51 and B52. A return water adaptation groove 502 and a supply water adaptation groove 503 are respectively connected to both ends of the U-shaped cooling groove 501. A folded flexible hose A is connected to the bottom end of the return water adaptation groove 502. 504, the bottom ends of several folded hoses A504 are respectively connected to the top ends of several return water through holes 541; the bottom end of the water supply adaptation tank 503 is connected to a folded hose B505, and the bottom ends of several folded hoses B505 are respectively connected to the top ends of several water supply through holes 542; the cooling channel is composed of water supply through holes 542, folded hoses B505, water supply adaptation tank 503, U-shaped cooling tank 501, return water adaptation tank 502, folded hoses A504 and return water through holes 541. With the above configuration, the cooling mechanism is activated, and the coolant enters the water supply ring tank 44 through the water supply hole 45, enters the U-shaped cooling tank 501 through the water supply through holes 542, folded hoses B505, and water supply adaptation tank 503, flows through the return water adaptation tank 502, folded hoses A504, return water through holes 541 and return water ring tank 43, and then flows out from the return water hole 46, forming a cooling cycle.

[0051] In embodiments of the present invention, such as Figure 7 and Figure 8 As shown, both sides of the bottom end of the inner lining strip A51 and the inner lining strip B52 are fixed with supporting slide plates 506, and the bottom ends of several supporting slide plates 506 are slidably connected to several sliding grooves A543 respectively; a sliding guide groove A507 is opened at the bottom end of the inner lining strip A51 on the centripetal side, and a sliding guide groove B508 is opened at the bottom end of the inner lining strip B52 on the centripetal side.

[0052] In embodiments of the present invention, such as Figure 10 As shown, the drive mechanism 6 includes a column 60, a motor A61, a ring block 62, an adjusting block 65, and a motor B67.

[0053] In embodiments of the present invention, such as Figure 6 and Figure 10As shown, the column 60 is located in the movable groove 42. The bottom end of the column 60 is fixed with a number of guide plates A601 and a number of guide plates B602 in a ring-shaped, equally spaced structure. The guide plates A601 and B602 are arranged alternately. The guide plates A601 are movably engaged with a number of sliding guide grooves A507, and the guide plates B602 are movably engaged with a number of sliding guide grooves B508. The sliding groove B544 is slidably connected to the corresponding guide plate A601 or guide plate B602. The length of the guide plate B602 is greater than the length of the guide plate A601. Through the above design, this invention enables the column 60, several guide plates A601, and several guide plates B602 to rise. The top inclined surface of guide plate B602 first contacts the bottom end of sliding guide groove B508, causing the inner liner B52 to drive the centrifugal shaft 552 to move along the eccentric direction. Spring A554 is compressed. When guide plate B602 completely slides into sliding guide groove B508, the inner liner B52 is in close contact with the inner surface of the thin-walled bushing. At this time, two adjacent inner liner B52 form a slide path adapted to inner liner A51. As the column 60, several guide plates A601, and several guide plates B602 continue to rise, guide plate B602 slides relative to sliding guide groove B508, while the position of inner liner B52 remains unchanged, until the top inclined surface of guide plate A601 contacts the bottom end of sliding guide groove A507. The inner lining strip A51 drives the centripetal shaft 552 to move along the eccentric direction, and the spring A554 is compressed. When the guide plate A601 slides completely into the sliding guide groove B508, the inner lining strip A51 slides into the slideway. Several inner lining strips A51 and several inner lining strips B52 form a closed annular inner lining. When the column 60, several guide plates A601 and several guide plates B602 descend, the guide plate A601 first disengages from the sliding guide groove A507. Under the elastic force of the spring A554, the inner lining strip A51 returns to its initial position. When the column 60, several guide plates A601 and several guide plates B602 continue to descend, until the guide plate B602 disengages from the sliding guide groove B508, the inner lining strip B52 returns to its initial position. At this time, the inner lining strip B52 is located on the eccentric side of the inner lining strip A51. Several inner lining strips A51 and several inner lining strips B52 form an inner and outer layer structure. In this state, it is convenient to install the thin-walled bushing. The connecting plate is placed on the bearing ring 55. When the column 60, several guide plates A601 and several guide plates B602 rotate, the inner lining mechanism 5 rotates synchronously, so that the thin-walled bushing and the connecting plate rotate relative to the welding mechanism 2, which facilitates welding.

[0054] In embodiments of the present invention, such as Figure 10 and Figure 11As shown, motor A61 is fixed on mounting cavity A48, and ring block 62 is rotatably mounted on rotating groove B47. A lead screw A63 is rotatably connected to ring block 62. The lead screw A63 is threadedly connected to column body 60. The bottom end of lead screw A63 passes through mounting cavity A48 and is fixedly connected to the output shaft of motor A61. Several slide rods 64 are fixedly mounted on the top of ring block 62 in an annular, equally spaced structure. The slide rods 64 are slidably connected to column body 60. A movable hole B621 is opened on the surface of ring block 62. A limit shaft 622 is movably connected to movable hole B621. The limit shaft 622 is movably engaged with limit groove 49. The limit shaft 622 and movable hole B621 are elastically connected by spring B623.

[0055] In embodiments of the present invention, such as Figure 10 and Figure 11 As shown, the adjusting block 65 is slidably disposed on the limiting groove 49. The centripetal end of the adjusting block 65 has an arc surface structure that is adapted to the rotating groove B47. The eccentric end of the adjusting block 65 is threadedly connected to the lead screw B66. The motor B67 is fixedly disposed on the mounting cavity B40. The eccentric end of the lead screw B66 passes through the mounting cavity B40 and is fixedly connected to the output shaft of the motor B67. Through the above design, in the initial state, under the elastic force of spring B623, the limiting shaft 622 is inserted into the limiting groove 49. The end of the limiting groove 49 provides a limit for the limiting shaft 622, preventing the ring block 62 from rotating and the column 60 from rotating. The output shaft of motor A61 is controlled to rotate by an external control mechanism, and the lead screw A63 rotates to move the column 60, which is used to adjust the shape of the inner lining mechanism 5. The output shaft of motor B67 is controlled to rotate by an external control mechanism, causing the adjusting block 65 to slide relative to the limiting groove 49. The limiting shaft 622 slides into the movable hole B621, and spring B623 is compressed until the surface of the radial end of the adjusting block 65 engages with the rotating groove B47. The limiting shaft 622 is completely submerged in the movable hole B621. At this time, the output shaft of motor A61 is controlled to rotate by an external control mechanism, and the ring block 62 and the column 60 rotate, which is used to drive the inner lining mechanism 5 to rotate.

[0056] Working principle: This embodiment provides a welding device for forming bearing metal bushings. When using it, follow these steps:

[0057] S1. Clamping preparation:

[0058] The control motor A61 drives the lead screw A63 to rotate, causing the column 60, several guide plates A601 and several guide plates B602 to descend to the low position; under the action of the spring A554, the inner lining strip A51 and inner lining strip B52 are at the centripetal end, forming an inner and outer layer structure.

[0059] S2. Workpiece placement:

[0060] The thin-walled bushing body is fitted around the inner liner strip A51 and the inner liner strip B52, and the connecting plate is placed on the bearing ring 55;

[0061] S3, Inner lining tightening:

[0062] The control motor A61 drives the lead screw A63 to rotate in the opposite direction, causing the column 60 to lift the guide plate A601 and guide plate B602. The guide plate B602 first contacts and pushes the inner liner B52 to move in the eccentric direction, so that its outer surface is in close contact with the inner wall of the thin-walled bushing body. Then the guide plate A601 contacts and pushes the inner liner A51 to move in the eccentric direction, sliding into the slide rail formed by the gap between the adjacent inner liner B52, so that several inner liner A51 and several inner liner B52 form a closed annular inner liner, completing the rigid support and positioning of the workpiece.

[0063] S4. Unlocking the rotating mechanism: Control motor B67 drives lead screw B66 to rotate, causing adjusting block 65 to move centripetally along limiting slide groove 49 until its arc end engages with the surface of rotating groove B47, fully pressing limiting shaft 622 into movable hole B621, releasing the rotation limit of ring block 62.

[0064] S5. Welding and forming: Start the welding mechanism 2 and control the motor A61 to drive the lead screw A63 to rotate, which drives the ring block 62, column 60 and the entire inner lining mechanism 5 together with the workpiece to rotate at a uniform speed; During the welding process, when any inner lining strip A51 or inner lining strip B52 rotates to the maximum width section of its water supply adaptation groove 503 and water supply ring groove 44, the cooling flow of the inner lining strip automatically increases to the maximum, and strengthens the cooling of the inner wall area of ​​the thin-walled bushing facing the welding heat source;

[0065] S6. Rotation mechanism locking: After welding is completed, control motor B67 drives lead screw B66 to reverse, so that adjusting block 65 moves eccentrically to reset; under the action of spring B623, limit shaft 622 pops out and inserts into the end of limit slide groove 49, locking ring block 62.

[0066] S7. Unloading: Stop welding mechanism 2 and cooling mechanism, control motor A61 to reverse so that column 60 drops, inner liner A51 and inner liner B52 are reset under the action of spring A554, and the welded bearing metal bushing is removed.

[0067] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A welding apparatus for forming bearing metal bushings, comprising a housing (1), wherein a welding mechanism (2) is provided inside the housing (1), and a support housing (3) is provided on one side of the welding mechanism (2), characterized in that, The support box (3) is provided with an integrated base (4), and the integrated base (4) is provided with an inner lining mechanism (5). The inner lining mechanism (5) includes a plurality of inner lining strips A (51) and a plurality of inner lining strips B (52) arranged in a ring-shaped and equally spaced structure. The plurality of inner lining strips A (51) and the plurality of inner lining strips B (52) are arranged in an alternating manner. The inner lining strips B (52) have a fan-shaped structure. The plurality of inner lining strips A (51) and the plurality of inner lining strips B (52) can move back and forth in the centripetal direction. When the plurality of inner lining strips A (51) and the plurality of inner lining strips B (52) are both at the eccentric end, the plurality of inner lining strips A (51) and the plurality of inner lining strips B (52) form a closed ring-shaped inner lining. The integrated base (4) is provided with a return water ring groove (43) and a supply water ring groove (44). The radial width of the return water ring groove (43) and the supply water ring groove (44) is not uniform. The radial width is the largest in the flow channel section corresponding to the fixed welding heat source position, and the radial width of the other sections is smaller than the maximum width. Cooling channels are provided on both the inner lining strip A (51) and the inner lining strip B (52). The water inlet end of the cooling channel is connected to the water supply ring groove (44), and the cooling channel is connected to the water return ring groove (43). The integrated base (4) is provided with a drive mechanism (6) for driving the movement and rotation of a plurality of inner lining strips A (51) and a plurality of inner lining strips B (52).

2. The welding apparatus for forming bearing metal bushings according to claim 1, characterized in that, The top of the integrated base (4) is provided with a rotating groove A (41), and the bottom of the rotating groove A (41) is provided with a movable groove (42). The integrated base (4) has a water supply hole (45) communicating with the water supply ring groove (44) and a return water hole (46) communicating with the return water ring groove (43) in a vertical structure on one side. The bottom of the movable groove (42) is provided with a rotating groove B (47), and the bottom of the rotating groove B (47) is provided with an installation cavity A (48). The rotating groove B (47) has a limiting slide groove (49) on one side, and the eccentric side of the limiting slide groove (49) has an installation cavity B (40).

3. The welding apparatus for forming bearing metal bushings according to claim 2, characterized in that, The return water ring groove (43) and the supply water ring groove (44) are both opened at the bottom of the rotating groove A (41). The movable groove (42), the return water ring groove (43) and the supply water ring groove (44) are arranged in an inner and outer structure. The bottom of the rotating groove A (41) is provided with groove A, groove B and groove C in an inner and outer structure relative to the position of the return water ring groove (43) and the supply water ring groove (44). Sealing ring A (441), sealing ring B (442) and sealing ring C (443) are respectively embedded in groove A, groove B and groove C. The opposite ends of sealing ring A (441) and sealing ring B (442) are adapted to the two ends of the return water ring groove (43), and the opposite ends of sealing ring B (442) and sealing ring C (443) are adapted to the two ends of the supply water ring groove (44).

4. The welding apparatus for forming bearing metal bushings according to claim 3, characterized in that, The inner lining mechanism (5) also includes a rotating ring (53), which is rotatably mounted on the rotating groove A (41). An inner ring (54) is fixedly provided at the bottom end of the rotating ring (53). The top ends of the sealing ring A (441), the sealing ring B (442), and the sealing ring C (443) are all movably engaged with the bottom end of the inner ring (54). The top end of the rotating ring (53) extends out of the rotating groove A (41) and is fixedly provided with a bearing ring (55).

5. The welding apparatus for forming bearing metal bushings according to claim 4, characterized in that, The inner ring (54) has a ring-shaped structure with equal spacing and a plurality of return water through holes (541) communicating with the return water ring groove (43) and a plurality of supply water through holes (542) communicating with the supply water ring groove (44). The supply water through holes (542) have sliding grooves A (543) on both sides. The inner edge of the inner ring (54) has a plurality of sliding grooves B (544) at the positions of the plurality of supply water through holes (542).

6. The welding apparatus for forming bearing metal bushings according to claim 5, characterized in that, The inner edge of the bearing ring (55) has a plurality of movable holes A (551) in an annular and equally spaced structure. A centripetal shaft (552) is movably connected to the movable hole A (551). A spring groove (553) is provided at the eccentric end of the centripetal shaft (552). The spring groove (553) and the movable hole A (551) are elastically connected by a spring A (554). The sum of the number of the plurality of inner lining strips A (51) and the plurality of inner lining strips B (52) is equal to the number of the plurality of centripetal shafts (552), and the centripetal end of the centripetal shaft (552) is fixedly connected to the eccentric end of the corresponding inner lining strip A (51) or inner lining strip B (52).

7. The welding apparatus for forming bearing metal bushings according to claim 6, characterized in that, Both the inner lining strip A (51) and the inner lining strip B (52) are provided with U-shaped cooling grooves (501), and the two ends of the U-shaped cooling grooves (501) are respectively connected to a return water adaptation groove (502) and a supply water adaptation groove (503). The bottom end of the return water adaptation tank (502) is connected to a folded hose A (504), and the bottom ends of several folded hoses A (504) are respectively connected to the top ends of several return water through holes (541); The bottom end of the water supply adaptation tank (503) is connected to a folded hose B (505), and the bottom ends of several folded hoses B (505) are respectively connected to the top ends of several water supply through holes (542); The cooling channel is composed of the water supply through hole (542), the folded hose B (505), the water supply adaptation tank (503), the U-shaped cooling tank (501), the return water adaptation tank (502), the folded hose A (504), and the return water through hole (541); Both sides of the bottom end of the inner lining strip A (51) and the inner lining strip B (52) are fixed with supporting slide plates (506), and the bottom ends of several supporting slide plates (506) are slidably connected to several sliding grooves A (543); The inner lining strip A (51) has a sliding guide groove A (507) at the bottom end on the inward side, and the inner lining strip B (52) has a sliding guide groove B (508) at the bottom end on the inward side.

8. The welding apparatus for forming bearing metal bushings according to claim 7, characterized in that, The driving mechanism (6) includes a column (60) which is disposed in the movable groove (42). The bottom end of the column (60) is fixed with a plurality of guide plates A (601) and a plurality of guide plates B (602) in an annular equidistant structure. The plurality of guide plates A (601) and the plurality of guide plates B (602) are arranged alternately. The plurality of guide plates A (601) are respectively in movable cooperation with a plurality of sliding guide grooves A (507). The plurality of guide plates B (602) are respectively in movable cooperation with a plurality of sliding guide grooves B (508). The sliding groove B (544) is slidably connected to the corresponding guide plate A (601) or guide plate B (602). The length of guide plate B (602) is greater than the length of guide plate A (601).

9. The welding apparatus for forming bearing metal bushings according to claim 8, characterized in that, The drive mechanism (6) further includes a motor A (61) and a ring block (62). The motor A (61) is fixed on the mounting cavity A (48), and the ring block (62) is rotatably mounted on the rotating groove B (47). A lead screw A (63) is rotatably connected to the ring block (62). The lead screw A (63) is threadedly connected to the column (60). The bottom end of the lead screw A (63) passes through the mounting cavity A (48) and is fixedly connected to the output shaft of the motor A (61). The top of the ring block (62) is fixed with a number of sliding rods (64) in an annular and equally spaced structure. The sliding rods (64) are slidably connected to the column (60). The surface of the ring block (62) is provided with a movable hole B (621). A limiting shaft (622) is movably connected to the movable hole B (621). The limiting shaft (622) is movably engaged with the limiting slide groove (49). The limiting shaft (622) and the movable hole B (621) are elastically connected by a spring B (623).

10. The welding apparatus for forming bearing metal bushings according to claim 9, characterized in that, The drive mechanism (6) further includes an adjusting block (65) and a motor B (67). The adjusting block (65) is slidably disposed on the limiting groove (49). The centripetal end of the adjusting block (65) has an arc surface structure adapted to the rotating groove B (47). The eccentric end of the adjusting block (65) is threadedly connected to a lead screw B (66). The motor B (67) is fixedly disposed on the mounting cavity B (40). The eccentric end of the lead screw B (66) passes through the mounting cavity B (40) and is fixedly connected to the output shaft of the motor B (67).

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