Rotary body external welding and internal supporting welding tool and method

Abstract

The welding tool comprises a support, a bottom plate, a rotating disc and a telescopic supporting frame, the support is vertically installed on the bottom plate, the rotating disc is installed at the front end of the support and used for installing a shell, and the telescopic supporting frame comprises a supporting beam, a pull rod, a movable connecting rod set and a supporting plate. The bottom of the supporting beam is installed in the center of the rotating disc, the movable connecting rod set is installed at the front end of the supporting beam, the supporting plates are installed at the upper position and the lower position of the movable connecting rod set, and the pull rod penetrates through the middle of the supporting beam to be connected with the movable connecting rod set. The supporting plate is used for supporting the supporting part in the shell of the to-be-embedded and welded part, the device has the advantages of being convenient and rapid to operate and small in preheating and cooling amplitude of the part, meanwhile, the pull rod is adopted for driving, and the shell is convenient to assemble and disassemble.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical processing, and particularly relates to a rotary body external welding internal supporting welding tool and method. BACKGROUND

[0002] In the process of mechanical processing welding, sometimes small parts need to be welded inside the barrel-shaped parts. When welding the embedded parts inside the parts, since the parts to be welded are small disc-shaped parts, and preheating is required, the fixing and welding process is extremely inconvenient. It is necessary to tighten the embedded parts inside the welding part to prevent welding from being skewed, and the overall preheating welding temperature is relatively high. The existing technology basically uses a jack to fix the position, which causes the following problems in the welding process: 1. Each internal support needs to use a jack manually, which is time-consuming and labor-consuming, and the jack needs to be twisted frequently, and there are fixed positioning and jack positioning error problems, and the preheating temperature is high, which has the risk of scalding.

[0003] 2. Using a manual jack to operate individually wastes time and causes the preheating temperature to drop. The jack itself is a large block of metal material, has strong heat conductivity, causes the welding time to be long, and the temperature of the jack itself rises with long-time use, which affects the lubricity, and the high temperature of the top is also easy to cause scalding.

[0004] Therefore, the present application needs a scheme to solve the above technical problems in the welding process. SUMMARY

[0005] In order to overcome the above-mentioned deficiencies, the inventor of the present application has made long-term exploration and attempts, and has made repeated experiments and efforts, and has constantly reformed and innovated, and has proposed a rotary body external welding internal supporting welding tool and method, which fixes the parts to be welded, has the advantages of convenient and fast operation, small preheating and cooling range of parts, and adopts a pull rod drive, and the installation and disassembly of the shell are relatively convenient, and a rotating disc is arranged, and when the workpiece is put in, the clamp can be adjusted to rotate to make the welded part perpendicular to the ground, which is convenient for welding alignment, and the workpiece can also be rotated during welding to facilitate the welding personnel to operate welding.

[0006] The technical scheme adopted by the present application to achieve the above-mentioned purpose is: a rotary body external welding internal support welding tool is provided. The tool comprises a support, a bottom plate, a rotating disc, and a telescopic support frame. The support is vertically installed on the bottom plate, and the front end of the support is installed with the rotating disc for installing a shell. The telescopic support frame comprises a support beam, a pull rod, a movable connecting rod group, and a support plate. The bottom of the support beam is installed at the center of the rotating disc. The movable connecting rod group is installed at the front end of the support beam. The upper and lower positions of the movable connecting rod group are both installed with the support plate. The pull rod passes through the movable connecting rod group and is connected to the movable connecting rod group in the middle of the support beam. The pull rod drives the movable connecting rod group to move, thereby driving the radial expansion and contraction of the support plate. The support plate is used to form a support in the shell for the parts to be internally embedded and welded.

[0007] According to the further preferred technical scheme of the rotary body external welding internal support welding tool, the rotating disc comprises a rotating shaft, a locking plate, a pad, a rotating disc, and a fixing bolt. The rotating disc is supported on the rotating shaft and the distance is adjusted by the locking plate and the pad. An arc-shaped groove is arranged at the edge of the rotating disc, and the fixing bolt is installed in the arc-shaped groove. The front end of the fixing bolt is fixed in the hole in the pad and the locking plate. The fixing bolt is tightened to fix the rotating disc. Positioning support blocks are arranged on the shell mounting surface of the rotating disc for the installation and positioning of the shell.

[0008] According to the further preferred technical scheme of the rotary body external welding internal support welding tool, the number of support blocks is three or four. The support blocks are arranged around the center of the rotating disc and correspond to the internal shape of the shell. The rotating disc is used to adjust the rotating disc when the shell is offset, so that the welded parts are perpendicular to the ground, facilitating welding alignment. When welding, rotating the workpiece facilitates the operation of the welder.

[0009] According to the further preferred technical scheme of the rotary body external welding internal support welding tool, the total arc of the arc-shaped groove is 40°. The position of the arc-shaped groove exceeds the to-be-installed shell to avoid obstruction.

[0010] According to the further preferred technical scheme of the rotary body external welding internal support welding tool, the rotating shaft is installed on the support through a deep groove ball bearing, and the rotating disc is fixedly connected to the rotating shaft to realize rotation.

[0011] According to the further preferred technical scheme of the rotary body external welding internal support welding tool, the movable connecting rod group comprises a connecting plate and a connecting rod. The left connecting plate is fixed on the support beam, and the right connecting plate is fixedly installed on the pull rod and driven by the pull rod to move left and right. The upper ends of the left and right connecting plates are respectively connected to the lower part of the upper support plate through two connecting rods. The lower ends of the left and right connecting plates are respectively connected to the upper part of the lower support plate through two connecting rods. Both ends of all the connecting rods are rotatably installed.

[0012] Further, the pull rod is provided with a protruding section as a limiting protrusion between the left connecting plate and the right connecting plate, so as to limit the distance between the left connecting plate and the right connecting plate.

[0013] Further, the lower part of the support plate is provided with a mounting protrusion, the two ends of the mounting protrusion are provided with mounting holes, the connecting rod is arc-shaped and has an opening, a bolt penetrating through the opening of the connecting rod is arranged in the mounting hole to realize rotary mounting, and a sleeve is arranged between the connecting rods arranged on the left connecting plate and the right connecting plate to control the distance between the connecting rods.

[0014] A rotary body welding method comprises the following steps: S1, installing a part to be inlaid welded into a shell, then aligning the bottom of the shell with a rotating disc, and positioning the shell by using a supporting block to realize preliminary mounting of the shell; S2, rotating the pull rod to drive the telescopic supporting frame to expand to form support for the part to be inlaid welded; S3, loosening a fixing bolt, rotating the rotating disc to rotate the welded part vertically to the ground, and tightening the fixing bolt to lock the rotating disc; and S4, welding, and after the welding is completed, rotating the pull rod to drive the movable connecting rod set to move to drive the support plate to contract radially, so as to facilitate the removal of the shell.

[0015] Further, in step S1, the part to be inlaid welded and the shell need to be preheated before preliminary installation.

[0016] Compared with the prior art, the technical scheme of the present application has the following advantages / benefits: 1. The present application has the advantages of convenient and fast operation, small preheating and cooling range of the part, and convenient installation and dismounting of the shell.

[0017] 2. The rotating disc is arranged, so that when the workpiece is placed in the shell, the clamp can be rotated to adjust the welded part to be vertical to the ground, so as to facilitate welding alignment and rotation of the workpiece during welding to facilitate welding operation of the welding personnel. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1It is a structure schematic view of a rotary body outer welding inner support welding tool of the present application.

[0020] Figure 2 It is a rotating disc structure schematic view of a rotary body outer welding inner support welding tool of the present application.

[0021] Figure 3 It is a top view of a rotary body outer welding inner support welding tool of the present application.

[0022] Figure 4 It is Figure 3 Sectional view at A-A in the figure The marks in the figure are respectively: 1. support 2. bottom plate 3. rotating disc 301. rotating shaft 302. locking plate 303. cushion block 304. rotating disc 3041. arc-shaped groove 305. fixed bolt 306. deep groove ball bearing 4. telescopic support frame 401. support beam 402. pull rod 4021. limiting protrusion 403. movable connecting rod set 4031. left connecting plate 4032. right connecting plate 4033. connecting rod 404. support plate 4041. mounting protrusion 5. support block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application. Therefore, the detailed description of the embodiments of the present application provided below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0024] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it can not be further defined and explained in the subsequent drawings.

[0025] Example 1: As Figure 1The application discloses a rotary body outer welding inner supporting welding tool. The tool comprises a support 1, a bottom plate 2, a rotating disc 3 and a telescopic supporting frame 4. The support 1 is vertically installed on the bottom plate 2, the rotating disc 3 is installed at the front end of the support 1 and used for installing a shell, the telescopic supporting frame 4 comprises a supporting beam 401, a pull rod 402, a movable connecting rod set 403 and a supporting plate 404. The supporting beam 401 is installed at the center of the rotating disc 3, the movable connecting rod set 403 is installed at the front end of the supporting beam 401, the upper and lower positions of the movable connecting rod set 403 are both installed with the supporting plate 404, the pull rod 402 passes through the movable connecting rod set 403 and is connected with the movable connecting rod set 403 in the middle of the supporting beam 401, the pull rod 402 drives the movable connecting rod set 403 to move, thereby driving the radial expansion and contraction of the supporting plate 404, and the supporting plate 404 is used for supporting the parts to be inlaid welded in the shell. In the application, the pull rod 402 is a screw rod, rotating the screw rod drives the right connecting rod to contract the upper and lower supporting plates 404 to move upwards and downwards respectively, the upper end abuts against the top of the welded part, and the lower end abuts against the inner wall of the female part, so that the welded part can be tightly abutted against the inside, and the outside welding is facilitated. Of course, the pull rod 402 is only in the form of a screw rod, the screw rod can be used to realize stepless adjustment after rotation, and the expanded fixed state does not need to be maintained by external force, the stroke can be controlled by the number of rotation circles of the screw rod to set the supporting force, however, the pull rod 402 can also be realized by adopting a gas cylinder to realize the fixed state, at this time, the pull rod 402 can be a smooth rod, at this time, the supporting force is controlled by the stroke, which is equivalent to the pressure of the gas cylinder, and the end of the screw rod beyond the support 1 is provided with a power source such as a motor or a gas cylinder. In the application, the form of the telescopic supporting frame 4 does not necessarily adopt the structure shown in the drawings, and other structures capable of realizing supporting and relaxing can also be adopted, such as an X-shaped supporting structure. In the application, the upper and lower supporting plates 404 are in contact with the inner surface of the cylindrical shell, in order to facilitate the close contact with the inner wall of the shell, the supporting plates 404 can be provided with an arc shape matched with the inner wall, meanwhile, in order to better realize the heat preservation capacity of the welded part after preheating, the supporting plates 404 can be made of non-metallic materials with low heat conductivity or provided with a coating to realize the heat insulation capacity, such as ceramic materials or Teflon plates, as long as the supporting strength and the heat insulation capacity can be realized.

[0026] The rotating disc 3 comprises a rotating shaft 301, a locking plate 302, a cushion block 303, a rotating disc 304 and a fixing bolt 305. The rotating disc 304 is supported on the support 1 through the rotating shaft 301 and the distance is adjusted through the locking plate 302 and the cushion block 303. An arc-shaped groove 3041 is arranged at the edge position of the rotating disc 304, the fixing bolt 305 is arranged in the arc-shaped groove 3041, the front end of the fixing bolt 305 is fixed in the hole in the cushion block 303 and the locking plate 302, the fixing bolt 305 is tightened to fix the rotating disc 304, and a positioning supporting block 5 is arranged on the shell mounting surface of the rotating disc 3 and used for the installation and positioning of the shell.

[0027] The number of the support blocks 5 is three or four, which are arranged around the center of the rotating disc 304 and correspond to the shape of the inside of the shell, and the rotating disc 3 is used to adjust the rotating disc 3 when the shell is offset, so that the welded parts are perpendicular to the ground, facilitating welding alignment, and the rotating workpiece facilitates welding personnel operation during welding. The support blocks 5 are aimed at the rotary body in the present application, which are arranged in a ring around the center of the rotating disc 304. The support beam 401 is installed at the center of the rotating disc 304. The two ends of the support beam 401 are connected to the positions of other components, and triangular reinforcing plates are provided at the positions to increase the structural strength.

[0028] The total arc of the arc-shaped groove 3041 is 40°, and the position of the arc-shaped groove 3041 exceeds the shell to be installed to avoid obstruction. The arc range can be adjusted according to actual needs. When necessary, rotation can be fixed by other similar structures, such as a latch, etc. If necessary, corresponding rotation scales can be provided. In order to realize the installation and positioning of the shell, the support block 5 or other positioning structure needs to play the role of a positioning block for the shell, so that the installation is more standardized.

[0029] The rotating shaft 301 is installed on the support 1 through the deep groove ball bearing 306, and the rotating disc 304 is fixedly connected to the rotating shaft 301 to realize rotation. The bearing is required to be able to bear the weight of the shell, so the deep groove ball bearing 306 is adopted to realize better bearing capacity. Of course, other bearings can be replaced as long as the weight bearing requirement is met.

[0030] The movable link set 403 includes connecting plates and connecting rods 4033. The left connecting plate 4031 is fixed on the support beam 401, and the right connecting plate 4032 is fixedly installed on the pull rod 402 and is driven to move left and right by the pull rod 402. The upper ends of the left connecting plate 4031 and the right connecting plate 4032 are respectively connected to the lower part of the upper support plate 404 through two connecting rods 4033. The lower ends of the left connecting plate 4031 and the right connecting plate 4032 are respectively connected to the upper part of the lower support plate 404 through two connecting rods 4033. Both ends of all connecting rods 4033 are rotatably installed. In the present application, one support plate 404 is connected with four connecting rods 4033, which are connected to the left and right connecting plates through the connecting rods 4033, so as to realize the movement of the connecting plates and drive the support plate 404 to expand or contract radially. The use of multiple connecting rods 4033 can ensure the stability and smoothness of the movement of the support plate 404.

[0031] The pull rod 402 is provided with a protruding section as a limiting protrusion 4021 between the left connecting plate 4031 and the right connecting plate 4032, which limits the minimum distance between the left connecting plate 4031 and the right connecting plate 4032, prevents the distance from being too large to cause damage to the shell, and the length of the limiting protrusion 4021 can be adjusted as needed.

[0032] The lower part of the support plate 404 is provided with a mounting protrusion 4041, the length of the mounting protrusion 4041 is matched with the length of the sleeve according to actual design, mounting holes are arranged at both ends of the mounting protrusion 4041, the connecting rod 4033 is arc-shaped and has an opening, a bolt passing through the opening of the connecting rod 4033 is arranged in the mounting hole to realize rotary mounting, and sleeves are arranged between the connecting rods 4033 mounted on the left connecting plate 4031 and the right connecting plate 4032 to control the spacing between the connecting rods 4033, and the length of the sleeve can be adjusted according to actual requirements.

[0033] The device can be made of Q235 steel except the deep groove ball bearing 306, the lead screw 402 and the lead screw nut.

[0034] Embodiment 2 A rotary body outer welding inner supporting welding method, the steps of which comprise: S1, installing a part to be inlaid welded into a shell, then aligning the bottom of the shell with a rotating disc 3, and positioning by using a supporting block 5 to realize preliminary mounting of the shell; S2, rotating a pull rod 402 to drive a telescopic supporting frame 4 to expand to support the part to be inlaid welded; S3, loosening a fixing bolt 305, rotating a rotating disc 304 to rotate to make the welded part perpendicular to the ground, and tightening the fixing bolt 305 to lock the rotating disc 304; S4, welding, and after the welding is completed, rotating the pull rod 402 to drive the movable connecting rod set 403 to move to drive the radial contraction of the support plate 404, so that the shell is conveniently taken out, and welding is performed from the outside, and the welding position and angle can be adjusted at any time by adjusting the rotating disc 3.

[0035] In step S1, the part to be inlaid welded and the shell need to be preheated before preliminary installation, and the preliminary installation of the part to be inlaid welded refers to installing it in the recessed position in the shell.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connecting", "fixed", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0039] The above is only the preferred embodiment of the present application, it should be pointed out that the above preferred embodiment should not be regarded as a limitation of the present application, the protection scope of the present application should be limited by the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the present application, a number of improvements and refinements can also be made, which should also be regarded as the protection scope of the present application.

Claims

1. A rotary external welding and internal support welding fixture, characterized in that, It includes a bracket, a base plate, a rotating disk, and a telescopic support frame. The bracket is vertically mounted on the base plate. The rotating disk is installed at the front end of the bracket for mounting the housing. The telescopic support frame includes a support beam, a tie rod, a movable linkage assembly, and a support plate. The bottom of the support beam is installed at the center of the rotating disk. The movable linkage assembly is installed at the front end of the support beam. Support plates are installed at both the top and bottom of the movable linkage assembly. The tie rod passes through the movable linkage assembly and connects it in the middle of the support beam. The tie rod drives the movable linkage assembly to move, thereby causing the support plate to expand and contract radially. The support plate is used to form a support within the housing for the parts to be embedded and welded.

2. The rotary external welding and internal support welding fixture according to claim 1, characterized in that, The rotating disk includes a rotating shaft, a locking plate, a pad, a rotating disk, and fixing bolts. The rotating disk is mounted on a rotating shaft bracket and its distance is adjusted via the locking plate and the pad. An arc-shaped groove is provided at the edge of the rotating disk, and fixing bolts are installed in the arc-shaped groove. The front end of the fixing bolts is fixed in the holes in the pads and the locking plate. Tightening the fixing bolts fixes the rotating disk. A positioning support block is provided on the housing mounting surface of the rotating disk for the installation and positioning of the housing.

3. The rotary external welding and internal support welding fixture according to claim 2, characterized in that, The number of support blocks is three or four, arranged around the center of the rotating disk and corresponding to the internal shape of the shell. The rotating disk is used to adjust the rotating disk to make the welded parts perpendicular to the ground when the shell is offset, which facilitates welding alignment. Rotating the workpiece during welding makes it easier for the welding personnel to operate the welding.

4. The rotary external welding and internal support welding fixture according to claim 3, characterized in that, The total arc of the arc groove is 40°, and the position of the arc groove extends beyond the housing to be installed to avoid obstruction.

5. The rotary external welding and internal support welding fixture according to claim 2, characterized in that, The rotating shaft is mounted on the bracket via a deep groove ball bearing, and the rotating disk is fixedly connected to the rotating shaft to achieve rotation.

6. The rotary external welding internal support welding fixture according to claim 1, characterized in that, The movable linkage assembly includes a connecting plate and connecting rods. The left connecting plate is fixed on the support beam, and the right connecting plate is fixed on the tie rod and moved left and right by the tie rod. The upper ends of the left and right connecting plates are respectively connected to the lower part of the upper support plate through two connecting rods, and the lower ends of the left and right connecting plates are respectively connected to the upper part of the lower support plate through two connecting rods. Both ends of all connecting rods are rotatably installed.

7. The rotary external welding and internal support welding fixture according to claim 6, characterized in that, The pull rod has a protruding section between the left and right connecting plates as a limiting protrusion to restrict the distance between the left and right connecting plates.

8. The rotary external welding and internal support welding fixture according to claim 6, characterized in that, The lower part of the support plate is provided with a mounting protrusion, and the two ends of the mounting protrusion are provided with mounting holes. The connecting rod is arc-shaped and has an opening. A bolt passing through the opening of the connecting rod is provided in the mounting hole to achieve rotational installation. Sleeves are provided between the connecting rods installed on the left connecting plate and the right connecting plate respectively to control the spacing between the connecting rods.

9. A method for welding an external welded inner support to a rotating body, characterized in that, The steps include: S1, installing the part to be embedded and welded into the housing, then aligning the bottom of the housing with the rotating disk, and using the support block for positioning to achieve the initial mounting of the housing; S2, rotating the pull rod to cause the telescopic support frame to expand and support the part to be embedded and welded; S3, loosening the fixing bolts, rotating the rotating disk to make the part to be welded perpendicular to the ground, and tightening the fixing bolts to lock the rotating disk; S4, performing welding, and after welding, turning the pull rod, which drives the movable connecting rod assembly to move, thereby causing the support plate to retract radially, making it easy to remove the housing.

10. The method for welding an external rotating body support according to claim 9, characterized in that, In step S1, both the parts to be embedded and welded and the outer casing need to be preheated before initial installation.

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