Device capable of adjusting preheating of longitudinal seam welding outer opening

Abstract

The invention discloses an adjustable longitudinal seam welding outer opening preheating device which comprises a bottom plate, a clamp, a supporting frame, inserting holes formed in the front portion and the rear portion of the bottom plate, a threaded shaft arranged at the bottom end of the supporting frame, and a limiting nut in threaded connection with the outer surface, located above the bottom plate, of the threaded shaft. Sliding grooves are formed in the two sides of the top end of the supporting frame, and the sliding mechanism is slidably connected to the upper portion of the supporting frame. The height of the supporting frame is changed by rotating the limiting nut to adjust the length of the supporting frame penetrating into the lower portion of the bottom plate so as to adapt to barrels of different diameters, the heating mechanism is started, the lead shaft rotates to drive the heating mechanism to reciprocate along the weld joint, and in the movement process, the rotating gear works to drive the heating mechanism to swing, so that the heating effect is improved. And the electromagnetic telescopic rod follows to make length compensation, and the swing amplitude of the rotating gear is changed by limiting the width of an area needing to be heated, so that cylinder welding seams with different diameters can be fully preheated.

Description

Technical Field

[0001] The invention relates to the field of welding, in particular to a device capable of adjusting the preheating of an outer opening of longitudinal seam welding. Background Art

[0002] Welding preheating is a process measure to heat the entire or part of the weldment before welding. The selection of preheating temperature usually depends on factors such as the material, thickness, structural rigidity and welding material of the weldment. The preheating width of cylindrical workpiece welding depends on the diameter and thickness of the cylinder.

[0003] After searching, a longitudinal weld preheating device for a cylinder (CN 217344118 U) is disclosed. It includes a support seat, a gas delivery rack, a plurality of first nozzles and a plurality of second nozzles. The gas delivery rack is installed on the support seat, and has a first gas channel extending along a first direction, a second gas channel extending along the first direction and an air inlet for connecting the combustible gas. The first gas channel and the second gas channel are arranged at intervals along a second direction perpendicular to the first direction. The air inlet is connected to the first gas channel and the second gas channel respectively. A plurality of first nozzles are installed at intervals along the first direction on the side of the gas delivery rack away from the support seat, and are connected to the first gas channel. A plurality of second nozzles are installed at intervals along the first direction on the side of the gas delivery rack away from the bracket, and are connected to the second gas channel.

[0004] The technical solution in this application can improve the convenience of preheating operation and preheating effect, but the device is preheated by spraying combustion gas through multiple nozzles. The length of the preheating device is limited by the number of nozzles, and the heating needs to be suspended after the temperature reaches the specified temperature during the preheating process. It is difficult to control the ignition and extinguishing of multiple nozzles. The device cannot adapt to the welding preheating of cylinders with different diameters. Summary of the invention

[0005] The purpose of the present invention is to provide a device capable of adjusting the preheating of the outer opening of longitudinal seam welding, which has the characteristic of being suitable for the preheating of welding of cylinders with different diameters.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for preheating the outer opening of an adjustable longitudinal seam welding, comprising a base plate, a clamp, which is symmetrically arranged above the base plate and moves from both sides to the middle at the same time, a support frame, and plug holes are arranged at the front and back of the base plate, a threaded shaft is arranged at the bottom end of the support frame, and the threaded shaft is located on the outer surface above the base plate and is threadedly connected to a limiting nut, slide grooves are arranged on both sides of the top of the support frame, a sliding mechanism is slidably connected to the top of the support frame, a moving mechanism is fixedly installed on both sides of the support frame and drives the sliding mechanism to reciprocate, and a heating mechanism is fixedly installed below the sliding mechanism and follows the sliding mechanism to reciprocate.

[0007] In order to prevent the sliding mechanism from detaching from the support frame during sliding, a device for preheating the outer opening of an adjustable longitudinal seam welding is preferably provided in which the sliding mechanism includes a sliding plate, the sliding plate is slidably connected to the top of the support frame, and limit blocks are fixedly installed on both sides of the bottom end of the sliding plate.

[0008] In order to be able to drive the sliding mechanism to move, as a preferred device for preheating the outer mouth of an adjustable longitudinal seam welding according to the present invention, the moving mechanism includes a fixed plate, which is fixedly installed on both sides of the support frame, and a motor is fixedly installed in the middle of one of the fixed plates, and a lead shaft is fixedly installed at the output end of the motor, the lead shaft is rotatably connected to the fixed plate at the other end, and a lead sleeve is provided on the outer surface of the lead shaft, and the lead sleeve is fixedly connected to the sliding plate.

[0009] In order to be able to drive the sliding mechanism to move, as a preferred device for preheating the outer mouth of an adjustable longitudinal seam welding according to the present invention, the moving mechanism includes two symmetrically arranged motors, the two motors are fixedly mounted on both sides of a support frame, the output end of the motor is unidirectionally meshed with a winding wheel, the outer surface of the winding wheel is wound with a traction rope, a reversing wheel is arranged on the outer side of the support frame, and the traction rope passes around the reversing wheel and is fixedly connected to the sliding plate.

[0010] In order to adapt to the different preheating widths of welding cylinders with different diameters, as a preferred device for preheating the outer mouth of an adjustable longitudinal seam welding of the present invention, the sliding mechanism also includes a power source, a power gear is fixedly installed on the output end of the power source, the front end of the sliding plate is rotatably connected to a rotating gear, the rotating gear is meshed with the power gear, the front end of the rotating gear is fixedly installed with an electromagnetic telescopic rod, the free end of the electromagnetic telescopic rod is fixedly installed with a connecting frame, and the heating mechanism is fixedly installed below the connecting frame.

[0011] In order to preheat the weld, as a preferred device for preheating the outer opening of an adjustable longitudinal seam welding according to the present invention, the heating mechanism includes an electric heating block, and the electric heating block is fixedly installed below the connecting frame.

[0012] In order to preheat the weld, as a preferred device for preheating the outer opening of an adjustable longitudinal seam welding according to the present invention, the heating mechanism includes a gas nozzle, and the gas nozzle is fixedly installed below the connecting frame.

[0013] In order to detect the temperature and adjust the temperature of the heating mechanism during the preheating process, as a preferred device for preheating the outer opening of an adjustable longitudinal seam welding, support plates are fixedly installed on both sides of the connecting frame, and a temperature detection mechanism is fixedly installed on the bottom end of the support plate.

[0014] In order to avoid deformation during preheating of the cylinder, a device for preheating the outer opening of an adjustable longitudinal seam welding is preferably provided in the present invention, further comprising two symmetrically arranged cross beams, G-clamps being fixedly installed at both ends of the cross beams, the clamping portion of the G-clamp being slidably connected to the main body, the main body of the G-clamp being threadedly connected with a threaded rod for adjusting the sliding of the clamping portion, a connecting plate being fixedly installed on the outer side of the G-clamp, a through hole being provided in the middle portion of the connecting plate, the same steel wire passing through the through holes of the connecting plates on both sides, a stud being fixedly installed at one end of the steel wire, a fastening nut being threadedly connected to the outer surface of the stud, a sleeve being fixedly installed at the end of the steel wire away from the stud, the steel wire being fixedly connected to the sleeve in the middle portion of the sleeve and being bent on the side away from the stud and then sleeved inside the sleeve, a wedge block being sleeved inside the bent portion of the steel wire.

[0015] In order to be able to adapt to the clamping and tightening of cylinders of different diameters, as a device for preheating the outer opening of an adjustable longitudinal seam welding according to the present invention, the diameter of the sleeve is larger than the diameter of the through hole, the diameter of the stud is smaller than the diameter of the through hole, and the diameter of the fastening nut is larger than the diameter of the through hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adjusts the length of the support frame penetrating below the bottom plate by rotating the limit nut to change the height of the support frame to adapt to cylinders of different diameters, starts the heating mechanism, and drives the heating mechanism to reciprocate along the weld by rotating the lead shaft. During the movement, the rotating gear drives the heating mechanism to swing, and the electromagnetic telescopic rod follows to make length compensation. The swing amplitude of the rotating gear is changed by limiting the width of the heating area to be heated, so that the cylinder welds of different diameters can be fully preheated.

[0018] 2. In the present invention, support plates are fixedly installed on both sides of the connecting frame, and a temperature detection mechanism is fixedly installed on the bottom end of the support plate. By arranging the temperature detection mechanism at both ends of the support plate, the temperature of the workpiece before the moving direction is detected, and the heating degree of the heating mechanism is adjusted, so that the preheating temperature can always be kept within an appropriate range.

[0019] 3. The present invention has two cross beams, both ends of which are fixedly installed with G-shaped clamps, the clamping part of the G-shaped clamp is slidably connected to the main body, the main body of the G-shaped clamp is threadedly connected with a threaded rod for adjusting the sliding of the clamping part, the clamping part of the G-shaped clamp is provided with a slider, the main body is provided with a slide groove, the threaded rod is rotatably connected to the clamping part, the clamping part of the G-shaped clamp is provided with a clamping device that can be adjusted up and down, a connecting plate is fixedly installed on the outer side of the G-shaped clamp, a through hole is provided in the middle of the connecting plate, and the two G-shaped clamps are tightened by steel wire. Through such a setting, the G-shaped clamp can be fixed to the outer side of the heating area of ​​the cylinder with different diameters to limit the cylinder and avoid deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the bottom plate connection of the present invention;

[0022] Figure 3 It is a schematic diagram of the clamp of the present invention;

[0023] Figure 4 This is a schematic diagram of the crossbeam connection of the present invention;

[0024] Figure 5 This is a schematic diagram of steel wire connection of the present invention;

[0025] Figure 6 This is a schematic diagram of the lead shaft connection of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection of the support frame of the present invention;

[0027] Figure 8 It is a schematic diagram of the connection of the winding wheel of the present invention;

[0028] Fig. 9 This is a schematic diagram of the connection of the electromagnetic telescopic rod of the present invention;

[0029] Fig.10 It is a schematic diagram of the gas nozzle connection of the present invention.

[0030] In the figure: 1, bottom plate; 2, fixture; 3, support frame; 301, plug hole; 302, threaded shaft; 303, limit nut; 304, slide groove; 4, sliding mechanism; 5, moving mechanism; 6, heating mechanism; 401, sliding plate; 402, limit block; 403, power source; 404, power gear; 405, rotating gear; 406, electromagnetic telescopic rod; 407, connecting frame; 408, support plate; 409, temperature detection Measuring mechanism; 501, fixing plate; 502, motor; 503, lead shaft; 504, lead sleeve; 505, motor; 506, winding wheel; 507, traction rope; 508, reversing wheel; 601, electric heating block; 602, gas nozzle; 7, crossbeam; 8, G-shaped clamp; 9, threaded rod; 10, connecting plate; 11, through hole; 12, steel wire; 13, stud; 14, fastening nut; 15, sleeve; 16, wedge block. DETAILED DESCRIPTION

[0031] See also Figures 1 to 10, a device for preheating the outer mouth of adjustable longitudinal seam welding, comprising a base plate 1, a clamp 2, which is symmetrically arranged above the base plate 1 and moves from both sides to the middle at the same time, the clamp 2 comprises a clamping plate, and the clamping plate is controlled to move by a hydraulic telescopic rod, or it can be controlled to move by an electromagnetic telescopic member, a support frame 3, a plug-in hole 301 is arranged at the front and rear of the base plate 1, a threaded shaft 302 is arranged at the bottom end of the support frame 3, a support leg is arranged at the bottom end of the base plate 1, and the length of the support leg is greater than the length of the threaded shaft 302, and the outer surface of the threaded shaft 302 is threadedly connected to a limiting nut 303 above the base plate 1, and slide grooves 304 are arranged on both sides of the top of the support frame 3, a sliding mechanism 4 is slidably connected to the top of the support frame 3, a moving mechanism 5 is fixedly installed on both sides of the support frame 3 and drives the sliding mechanism 4 to move back and forth, and a heating mechanism 6 is fixedly installed below the sliding mechanism 4 and follows the sliding mechanism 4 to reciprocate.

[0032] In this embodiment:

[0033] As a technical optimization solution of the present invention, the sliding mechanism 4 includes a sliding plate 401, which is slidably connected to the top of the support frame 3, and limit blocks 402 are fixedly installed on both sides of the bottom end of the sliding plate 401. The function of the sliding plate 401 is to carry objects, and the function of the limit blocks 402 is to limit the sliding direction of the sliding plate 401. Through such a setting, it can be ensured that the sliding plate 401 only slides along the limited direction.

[0034] In this embodiment:

[0035] As a technical optimization solution of the present invention, the moving mechanism 5 includes a fixed plate 501, which is fixedly installed on both sides of the support frame 3, wherein a motor 502 is fixedly installed in the middle of one of the fixed plates 501, and a lead shaft 503 is fixedly installed at the output end of the motor 502, the lead shaft 503 is rotatably connected to the fixed plate 501 at the other end, and a lead sleeve 504 is provided on the outer surface of the lead shaft 503, and the lead sleeve 504 is fixedly connected to the sliding plate 401, and the lead sleeve 504 can be driven to move by the rotation of the lead shaft 503, and the lead sleeve 504 can move the sliding plate 401, and precise position adjustment can be performed through such a setting.

[0036] In this embodiment:

[0037] As a technical optimization solution of the present invention, the moving mechanism 5 includes two symmetrically arranged motors 505, and the two motors 505 are fixedly installed on both sides of the support frame 3. The output end of the motor 505 is unidirectionally meshed with a winding wheel 506, and the output end of the motor 505 is fixedly installed with a one-way ratchet. The winding wheel 506 is provided with a gear sleeve that is unidirectionally meshed with the one-way ratchet. The winding wheel 506 is rotatably connected to the support frame 3 through a fixed frame. A traction rope 507 is wound around the outer surface of the winding wheel 506, and a reversing wheel 508 is provided on the outer side of the support frame 3. By alternately starting the motor 505, the sliding plate 401 can be reciprocated and pulled, and the traction rope 507 bypasses the reversing wheel 508 and is fixedly connected to the sliding plate 401. Such an arrangement can be suitable for long-distance movement.

[0038] In this embodiment:

[0039] As a technical optimization solution of the present invention, the sliding mechanism 4 also includes a power source 403, and a power gear 404 is fixedly installed at the output end of the power source 403. The front end of the sliding plate 401 is rotatably connected to a rotating gear 405, and the rotating gear 405 is meshed with the power gear 404. The front end of the rotating gear 405 is fixedly installed with an electromagnetic telescopic rod 406, and the free end of the electromagnetic telescopic rod 406 is fixedly installed with a connecting frame 407. The heating mechanism 6 is fixedly installed below the connecting frame 407. Through such an arrangement, the power gear 404 can drive the rotating gear 405 to swing, thereby enabling the heating mechanism 6 to swing. Since the preheating widths of cylinders with different diameters are different, different preheating widths can be adapted by changing the swing amplitude.

[0040] In this embodiment:

[0041] As a technical optimization solution of the present invention, the heating mechanism 6 includes an electric heating block 601, which is fixedly installed below the connecting frame 407. A resistance wire is arranged inside the electric heating block 601, and preheating is achieved by energizing the resistance wire.

[0042] In this embodiment:

[0043] As a technical optimization solution of the present invention, the heating mechanism 6 includes a gas nozzle 602, which is fixedly installed below the connecting frame 407, and the gas nozzle 602 achieves preheating through burning gas.

[0044] In this embodiment:

[0045] As a technical optimization solution of the present invention, support plates 408 are fixedly installed on both sides of the connecting frame 407, and a temperature detection mechanism 409 is fixedly installed on the bottom end of the support plate 408. By arranging the temperature detection mechanism 409 at both ends of the support plate 408, the heating degree of the heating mechanism 6 is adjusted by detecting the temperature of the workpiece before the moving direction, so that the preheating temperature can always be kept within an appropriate range, such as changing the current of the electric heating block 601 to achieve a change in the heat generation, or changing the jet volume of the gas nozzle 602 to change the heat generated by combustion.

[0046] In this embodiment:

[0047] As a technical optimization scheme of the present invention, it also includes two symmetrically arranged cross beams 7, G-shaped clamps 8 are fixedly installed at both ends of the cross beams 7, the clamping part of the G-shaped clamp 8 is slidably connected to the main body, the main body of the G-shaped clamp 8 is threadedly connected with a threaded rod 9 for adjusting the sliding of the clamping part, the clamping part of the G-shaped clamp 8 is provided with a slider, the main body is provided with a limit groove, the threaded rod 9 is rotatably connected to the clamping part, the clamping part of the G-shaped clamp 8 is provided with a clamping device that can be adjusted up and down, the outer side of the G-shaped clamp 8 is fixedly installed with a connecting plate 10, and the middle part of the connecting plate 10 is provided with a through hole 11. Through such an arrangement, the G-shaped clamp 8 can be fixed on the outside of the heating area of ​​the cylinder with different diameters.

[0048] The same steel wire 12 passes through the through hole 11 of the connecting plates 10 on both sides, and a stud 13 is fixedly installed at one end of the steel wire 12, and a fastening nut 14 is threadedly connected to the outer surface of the stud 13. A sleeve 15 is fixedly installed at the end of the steel wire 12 away from the stud 13. The steel wire 12 is fixedly connected to the sleeve 15 at the middle part of the sleeve 15 and is sleeved inside the sleeve 15 after being bent on the side away from the stud 13. A wedge block 16 is sleeved inside the bent part of the steel wire 12. After the stud 13 passes through the two through holes 11, the fastening nut 14 is rotated to achieve one side limitation, and the wedge block 16 is inserted into the inner side of the bent part of the steel wire 12. The sleeve 15 is squeezed to contact the connecting plate 10. Continuing to squeeze can tighten the connecting plates 10 at both ends. Due to the different installation positions of the cylindrical G-shaped clamps 8 of different diameters, the two connecting plates 10 cannot remain parallel. Through such an arrangement, the two connecting plates 10 can always be tightened to the center position.

[0049] In this embodiment:

[0050] As a technical optimization solution of the present invention, the diameter of the sleeve 15 is larger than the diameter of the through hole 11, the diameter of the stud 13 is smaller than the diameter of the through hole 11, and the diameter of the fastening nut 14 is larger than the diameter of the through hole 11. Through such an arrangement, the connecting plate 10 can be tightened, so that the weld of the cylinder will not change width after being heated.

[0051] Working principle: fix the cylinder weld upwards on the top of the base plate 1 through the clamp 2, and fix the G-shaped clamp 8 on the outside of the cylinder preheating zone, tighten the cylinder through the steel wire 12, and adjust the length of the support frame 3 to penetrate under the base plate 1 by rotating the limit nut 303 to change the height of the support frame 3 to adapt to cylinders of different diameters, start the heating mechanism 6, and drive the heating mechanism 6 to reciprocate along the weld by rotating the lead shaft 503. During the movement, the rotating gear 405 drives the heating mechanism 6 to swing, and the electromagnetic telescopic rod 406 follows to make length compensation. The swing amplitude of the rotating gear 405 is changed by limiting the width of the heating area, so that the cylinder welds of different diameters can be fully preheated.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for preheating the outer opening of an adjustable longitudinal seam welding, comprising a bottom plate (1), characterized in that: Also includes: The clamp (2) is symmetrically arranged above the bottom plate (1) and moves from both sides to the middle at the same time; The support frame (3) is provided with plug holes (301) at the front and rear of the bottom plate (1), a threaded shaft (302) is provided at the bottom end of the support frame (3), the threaded shaft (302) is located on the outer surface above the bottom plate (1) and is threadedly connected to a limit nut (303), and sliding grooves (304) are provided on both sides of the top end of the support frame (3); A sliding mechanism (4) is slidably connected above the support frame (3); A moving mechanism (5) is fixedly mounted on both sides of the support frame (3) and drives the sliding mechanism (4) to move back and forth; The heating mechanism (6) is fixedly mounted below the sliding mechanism (4) and reciprocates along with the sliding mechanism (4).

2. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 1, characterized in that: The sliding mechanism (4) comprises a sliding plate (401), the sliding plate (401) is slidably connected above the support frame (3), and limiting blocks (402) are fixedly installed on both sides of the bottom end of the sliding plate (401).

3. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 2, characterized in that: The moving mechanism (5) comprises a fixed plate (501), the fixed plate (501) being fixedly mounted on both sides of the support frame (3), a motor (502) being fixedly mounted in the middle of one of the fixed plates (501), a lead shaft (503) being fixedly mounted at the output end of the motor (502), the lead shaft (503) being rotatably connected to the fixed plate (501) at the other end, a lead sleeve (504) being provided on the outer surface of the lead shaft (503), and the lead sleeve (504) being fixedly connected to the sliding plate (401).

4. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 2, characterized in that: The moving mechanism (5) comprises two symmetrically arranged motors (505), the two motors (505) are fixedly mounted on both sides of the support frame (3), the output end of the motor (505) is unidirectionally meshed with a winding wheel (506), the outer surface of the winding wheel (506) is wound with a traction rope (507), a reversing wheel (508) is arranged on the outer side of the support frame (3), and the traction rope (507) passes around the reversing wheel (508) and is fixedly connected to the sliding plate (401).

5. A device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 3 or 4, characterized in that: The sliding mechanism (4) further comprises a power source (403), the output end of the power source (403) is fixedly mounted with a power gear (404), the front end of the sliding plate (401) is rotatably connected with a rotating gear (405), the rotating gear (405) is meshed with the power gear (404), the front end of the rotating gear (405) is fixedly mounted with an electromagnetic telescopic rod (406), the free end of the electromagnetic telescopic rod (406) is fixedly mounted with a connecting frame (407), and the heating mechanism (6) is fixedly mounted below the connecting frame (407).

6. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 5, characterized in that: The heating mechanism (6) comprises an electric heating block (601), and the electric heating block (601) is fixedly installed below the connecting frame (407).

7. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 5, characterized in that: The heating mechanism (6) comprises a gas nozzle (602), and the gas nozzle (602) is fixedly installed below the connecting frame (407).

8. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 6 or 7, characterized in that: Support plates (408) are fixedly mounted on both sides of the connecting frame (407), and a temperature detection mechanism (409) is fixedly mounted on the bottom end of the support plate (408).

9. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 8, characterized in that: It also comprises two symmetrically arranged cross beams (7), two ends of the cross beam (7) are fixedly mounted with G-shaped clamps (8), a clamping portion of the G-shaped clamp (8) is slidably connected to a body, a threaded rod (9) for adjusting the sliding of the clamping portion is threadedly connected to the body of the G-shaped clamp (8), a connecting plate (10) is fixedly mounted on the outer side of the G-shaped clamp (8), and a through hole (11) is provided in the middle of the connecting plate (10); The through holes (11) of the two connecting plates (10) on one side pass through the same steel wire (12), a stud (13) is fixedly installed at one end of the steel wire (12), a fastening nut (14) is threadedly connected to the outer surface of the stud (13), a sleeve (15) is fixedly installed at the end of the steel wire (12) away from the stud (13), the steel wire (12) is fixedly connected to the sleeve (15) at the middle part of the sleeve (15) and is bent at the side away from the stud (13) and then sleeved inside the sleeve (15), and a wedge block (16) is sleeved inside the bent part of the steel wire (12).

10. The device for preheating the outer opening of an adjustable longitudinal seam welding according to claim 9, characterized in that: The diameter of the sleeve (15) is larger than the diameter of the through hole (11), the diameter of the stud (13) is smaller than the diameter of the through hole (11), and the diameter of the fastening nut (14) is larger than the diameter of the through hole (11).

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