Positioning tool for welding screw head and circular tube

Abstract

The utility model discloses a positioning tool for welding a screw head and a round pipe. The positioning tool comprises an upper clamping plate, a lower clamping plate, a positioning core rod and a locking assembly. A set of force applying arms are arranged on the inner side of the upper clamping plate, the upper clamping plate is rotationally connected with the V-shaped lower clamping plate through a connecting lug plate, and a first locking arm of the upper clamping plate is connected with a second locking arm of the lower clamping plate through a locking assembly. A group of guide limiting blocks are fixed on two sides of the second locking arm of the lower clamping plate; a guide positioning sleeve is arranged on the upper clamping plate; the lower end of the positioning core rod is provided with a chamfer, and the upper surface of the round pipe is provided with a positioning hole welded to a screw head workpiece. And the positioning core rod penetrates through the guide positioning sleeve and is accurately positioned and connected with the positioning hole in the upper surface of the circular tube. The tool is simple in structure, easy to operate, convenient and fast to clamp and disassemble, simple, convenient and accurate to use, high in repeatability and low in manufacturing cost and maintenance cost, has quick locking and positioning functions, improves the assembling efficiency and quality of the screw head, reduces the cost and improves the welding quality.

Description

Technical Field

[0001] The utility model relates to the technical field of welding a wire head and a round tube, in particular to a positioning tool for welding a wire head and a round tube. Background Art

[0002] When welding a thread head to a round tube, creating a tee, the end face of the round tube is arc-shaped, while the end face where the thread head and the round tube are assembled is flat. Therefore, positioning the thread head's axis generally requires it to coincide with the center of the round tube and be parallel to the end face. Currently, manual positioning is used, requiring multiple adjustments to barely achieve the required assembly accuracy, but this is labor-intensive and inefficient. Summary of the Invention

[0003] In view of the above problems, the present invention provides a positioning tool for welding a wire head to a round tube to solve the technical problems existing in the background technology.

[0004] The utility model adopts the following technical solutions to achieve:

[0005] A positioning tool for welding a wire head to a round tube, comprising an upper clamping plate, a lower clamping plate and a locking assembly; a group of force arms are provided on the inner side of the upper clamping plate, one end of the upper clamping plate is rotatably connected to one end of the V-shaped lower clamping plate through a connecting ear plate, and one end of the upper clamping plate is provided with a first locking arm and is connected to one end of the lower clamping plate with a second locking arm through the locking assembly; a group of guide limit blocks are fixed on both sides of the second locking arm of the lower clamping plate to form a limit groove for limiting connection with the first locking arm of the upper clamping plate; a guide positioning sleeve is provided on the upper clamping plate; the lower end of the positioning core rod is provided with a chamfer, and the upper surface of the round tube is provided with a positioning hole for welding to the wire head workpiece; the positioning core rod passes through the guide positioning sleeve and is precisely positioned and connected to the positioning hole on the upper surface of the round tube.

[0006] Furthermore, the locking assembly includes a locking handle, a threaded rod, an adjusting nut, a locking fixing plate, a connecting plate and a bolt fixing assembly; the connecting plate is fixed to the end of the second locking arm, and a group of locking fixing plates are provided on the inner side of the connecting plate; the lower ends of the group of locking fixing plates are fixed to the two sides of the connecting plate through the bolt fixing assembly, and an adjusting nut is welded inside the upper end of a group of locking fixing plates; one end of the threaded rod is fixed with a locking handle, and the other end passes through the adjusting nut and is in contact and connected with the upper surface of the first locking arm provided between a group of locking fixing plates.

[0007] Furthermore, a set of fine-tuning nuts are provided on the screw rod of the bolt fixing assembly located inside the U-shaped connecting plate.

[0008] Furthermore, the lower clamping plate is provided with a connecting arm, which is rotatably connected to the upper clamping plate through a connecting ear plate and a rotating shaft passing through the connecting ear plate; a cotter pin is provided on the rotating shaft.

[0009] Furthermore, the upper clamping plate is an integrally formed structure, and a mounting hole for mounting the guide positioning sleeve is provided in the middle of the upper surface of the upper clamping plate.

[0010] Furthermore, the upper card plate is a split structure, including a left card plate and a right card plate; the left card plate and the right card plate are connected into a whole by welding a guide positioning sleeve in the middle.

[0011] Furthermore, the front end of the force-adding arm of the upper card plate is provided with a slot perpendicular to the surface of the upper card plate; the left connecting end of the upper card plate is provided with a connecting hole for connecting with the connecting ear plate; the inner wall of the V-shaped structure of the lower card plate is provided with a slot; and positioning strips are vertically provided in the slot of the force-adding arm and the slot of the lower card plate.

[0012] The beneficial effects of the utility model are as follows: the utility model has a simple structure, is easy to operate, has quick locking and positioning functions, is convenient and quick to clamp and disassemble, is simple and accurate to use, has high repeatability, has low cost and maintenance cost, improves the efficiency and quality of wire head assembly, reduces costs, and improves welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the bottom-up structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the integrated structure of the upper cardboard of the present utility model;

[0017] Figure 5 This is a schematic diagram of the split structure of the upper card plate of the utility model;

[0018] Figure 6 This is a schematic structural diagram of the lower card plate of the present utility model.

[0019] In the figure: positioning mandrel 1; guide positioning sleeve 2; wire head workpiece 3; upper clamping plate 4; positioning bar 5; locking handle 6; threaded rod 7; adjusting nut 8; locking fixing plate 9; connecting plate 10; bolt fixing assembly 11; guide limit block 12; lower clamping plate 13; connecting ear plate 14; rotating shaft 15; force arm 16; cotter pin 17; fine-tuning nut 18; left clamping plate 41; right clamping plate 42; mounting hole 43; slot 44; connecting hole 45; first locking arm 46; connecting arm 131; second locking arm 132. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the preferred embodiment shown in the accompanying drawings.

[0021] Reference Figures 1 to 6 As shown, a positioning tool for welding a wire head to a round tube comprises an upper clamping plate 4, a lower clamping plate 13, a positioning core rod 1 and a locking assembly; a group of force arms 16 are provided on the inner side of the upper clamping plate 4, and one end of the upper clamping plate 4 is rotatably connected to one end of the V-shaped lower clamping plate 13 through a connecting ear plate 14, and one end of the upper clamping plate 4 is provided with a first locking arm 46 and is connected to one end of the lower clamping plate 13 provided with a second locking arm 132 through a locking assembly; a group of guide limit blocks 12 are fixed on both sides of the second locking arm 132 of the lower clamping plate 13 to form a limit groove for limiting connection with the first locking arm 46 of the upper clamping plate 4; a guide positioning sleeve 2 is provided on the upper clamping plate 4; the lower end of the positioning core rod 1 is provided with a chamfer, and the upper surface of the round tube is provided with a positioning hole for welding with the wire head workpiece 3; the positioning core rod 1 passes through the guide positioning sleeve 2 and is precisely positioned and connected to the positioning hole on the upper surface of the round tube. By placing the round tube in the middle of a clamp-type clamp formed by an upper clamping plate 4, a lower clamping plate 13 and a locking assembly, the round tube is pre-locked by the locking assembly, and then the positioning core rod 1 is pressed into the guide positioning sleeve 2. After the chamfer at the lower end of the positioning core rod 1 is precisely connected to the positioning hole on the upper surface of the round tube, the upper clamping plate 4 and the lower clamping plate 13 are pressed against the round tube by the locking assembly, the positioning core rod 1 is taken out, and the wire head workpiece 3 is pressed into the guide positioning sleeve 2. After the wire head workpiece 3 is connected to the positioning hole on the upper surface of the round tube, welding is performed. It has quick locking and positioning functions, high positioning accuracy, good welding effect, ensures the accuracy requirements of the wire head and the round tube after welding, improves welding efficiency, and reduces labor intensity.

[0022] As a preferred embodiment, Figures 1 to 3 As shown, the locking assembly includes a locking handle 6, a threaded rod 7, an adjusting nut 8, a locking fixing plate 9, a connecting plate 10 and a bolt fixing assembly 11; the connecting plate 10 is fixed to the end of the second locking arm 132, and a group of locking fixing plates 9 are provided on the inner side of the connecting plate 10; the lower ends of the group of locking fixing plates 9 are fixed to the two sides of the connecting plate 10 by the bolt fixing assembly 11, and an adjusting nut 8 is welded inside the upper end of a group of locking fixing plates 9; one end of the threaded rod 7 is fixed with the locking handle 6, and the other end passes through the adjusting nut 8 and is in contact and connected with the upper surface of the first locking arm 46 provided between the group of locking fixing plates 9. By rotating the locking handle 6, the threaded rod 7 is screwed into the adjusting nut 8, so that the lower end of the threaded rod 7 presses the first locking arm 46, and the locking handle 6 is continued to be rotated. The first locking arm 46 moves downward in the limit groove formed by a group of guide limit blocks 12, so that the axis of the guide positioning sleeve 2 coincides with the center of the circular tube and ensures that it is parallel to the end face of the circular tube, meeting the positioning accuracy requirements, and then the wire head workpiece 3 is pressed into the guide positioning sleeve 2, and accurately positioned and connected with the positioning hole on the surface of the circular tube, and then welding is performed to ensure the welding positioning accuracy.

[0023] As a preferred embodiment, Figure 2 and Figure 3 As shown, the bolt fixing assembly 11 is provided with a set of fine-tuning nuts 18 on the screw inside the U-shaped connecting plate 10, which facilitates fine-tuning of the first locking arm 46 and the second locking arm 132 according to the positioning accuracy of different round tubes and wire head workpieces 3, has better adaptability, and can be recycled and reused.

[0024] As a preferred embodiment, Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, the lower clamping plate 13 is provided with a connecting arm 131, and the connecting arm 131 is rotatably connected to the upper clamping plate 4 through a connecting ear plate 14 and a rotating shaft 15 passing through the connecting ear plate 14; a cotter pin 17 is provided on the rotating shaft 15.

[0025] like Figure 4 As shown, the upper clamping plate 4 is an integrally formed structure, and a mounting hole 43 for mounting the guide positioning sleeve 2 is provided in the middle of the upper surface of the upper clamping plate 4. Figures 1 to 6 As shown, the front end of the force-adding arm 16 of the upper clamping plate 4 is provided with a slot 44 perpendicular to the surface of the upper clamping plate 4; the left connecting end of the upper clamping plate 4 is provided with a connecting hole 45 for connecting to the connecting ear plate 14; the inner wall of the V-shaped structure of the lower clamping plate 13 is provided with a slot 44; and the slots 44 of the force-adding arm 16 and the slots 44 of the lower clamping plate 13 are both vertically provided with positioning strips 5. For positioning welding of wire head workpieces 3 and round tubes of the same specifications, an upper clamping plate 4 with an integrally formed structure can be used. The integral molding structure more easily ensures higher positioning accuracy.

[0026] like Figure 5 As shown, the upper card plate 4 is a split structure, including a left card plate 41 and a right card plate 42; the left card plate 41 and the right card plate 42 are connected into a whole by welding the guide positioning sleeve 2 in the middle. Figures 1 to 6 As shown, the front end of the force-adding arm 16 of the upper clamping plate 4 is provided with a slot 44 perpendicular to the surface of the upper clamping plate 4; the left connecting end of the upper clamping plate 4 is provided with a connecting hole 45 for connecting to the connecting ear plate 14; the inner wall of the V-shaped structure of the lower clamping plate 13 is provided with a slot 44; the slot 44 of the force-adding arm 16 and the slot 44 of the lower clamping plate 13 are both vertically provided with a positioning bar 5, and the surface where the positioning bar 5 and the round tube are connected is set into an arc shape to improve the stability of the contact. For the positioning welding of wire head workpieces 3 and round tubes of different specifications, a split upper clamping plate 4 structure can be used, so that the guide positioning sleeve 2 of the corresponding specification can be replaced according to the size of the wire head workpiece 3 and directly welded for use, which is convenient for flexible adjustment and processing according to the actual size of the site.

[0027] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A positioning tool for welding a wire head to a round tube, comprising an upper clamping plate, a lower clamping plate, a positioning core rod and a locking assembly; characterized in that: A group of force arms are provided on the inner side of the upper clamping plate, and one end of the upper clamping plate is rotatably connected to one end of the V-shaped lower clamping plate through a connecting ear plate, and one end of the first locking arm provided on the upper clamping plate is connected to one end of the second locking arm provided on the lower clamping plate through a locking assembly; a group of guide limit blocks are fixed on both sides of the second locking arm of the lower clamping plate to form a limit groove for limiting connection with the first locking arm of the upper clamping plate; a guide positioning sleeve is provided on the upper clamping plate; the lower end of the positioning core rod is provided with a chamfer, and the upper surface of the round tube is provided with a positioning hole welded to the wire head workpiece; the positioning core rod passes through the guide positioning sleeve and is precisely positioned and connected to the positioning hole on the upper surface of the round tube.

2. A positioning tool for welding a wire head to a round tube according to claim 1, characterized in that: The locking assembly includes a locking handle, a threaded rod, an adjusting nut, a locking fixing plate, a connecting plate and a bolt fixing assembly; the connecting plate is fixed to the end of the second locking arm, and a group of locking fixing plates are provided on the inner side of the connecting plate; the lower ends of the group of locking fixing plates are fixed to the two sides of the connecting plate by the bolt fixing assembly, and an adjusting nut is welded inside the upper end of a group of locking fixing plates; one end of the threaded rod is fixed with a locking handle, and the other end passes through the adjusting nut and is in contact and connected with the upper surface of the first locking arm provided between the group of locking fixing plates.

3. A positioning tool for welding a wire head to a round tube according to claim 2, characterized in that: The bolt fixing assembly is provided with a set of fine-tuning nuts on the screw rod located inside the U-shaped connecting plate.

4. A positioning tool for welding a wire head to a round tube according to claim 1, characterized in that: The lower clamping plate is provided with a connecting arm, which is rotatably connected to the upper clamping plate through a connecting ear plate and a rotating shaft passing through the connecting ear plate; a cotter pin is provided on the rotating shaft.

5. A positioning tool for welding a wire head to a round tube according to claim 1, characterized in that: The upper clamping plate is an integrally formed structure, and a mounting hole for mounting a guide positioning sleeve is provided in the middle of the upper surface of the upper clamping plate.

6. A positioning tool for welding a wire head to a round tube according to claim 1, characterized in that: The upper clamping plate is a split structure, comprising a left clamping plate and a right clamping plate; the left clamping plate and the right clamping plate are connected into a whole by welding a guide positioning sleeve in the middle.

7. A positioning tool for welding a wire head to a round tube according to claim 5 or 6, characterized in that: The front end of the force-adding arm of the upper card plate is provided with a slot perpendicular to the surface of the upper card plate; the left connecting end of the upper card plate is provided with a connecting hole for connecting with the connecting ear plate; the inner wall of the V-shaped structure of the lower card plate is provided with a slot; the slot of the force-adding arm and the slot of the lower card plate are both vertically provided with positioning strips.

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