Handheld profile welding positioner

Abstract

The utility model provides a handheld profile welding positioner which is characterized in that the handheld profile welding positioner is composed of an L-shaped frame and magnet sets embedded in the two right-angle sides of the L-shaped frame respectively, each magnet set is composed of a cuboid magnet, a semi-cylinder iron block, an inner aluminum pipe, an outer aluminum pipe and a magnetic force conduction block, each cuboid magnet is arranged on a center shaft of the corresponding magnet set, and each semi-cylinder iron block is arranged on the center shaft of the corresponding magnet set. The left side face and the right side face are tightly attached to semi-cylindrical iron blocks respectively, the semi-cylindrical iron blocks are fixed in an inner aluminum pipe, an outer aluminum pipe is nested outside the inner aluminum pipe, the inner aluminum pipe can rotate in the outer aluminum pipe, the left side and the right side of the outer aluminum pipe are each provided with a magnetic conduction block in an adhesive mode, and the width of the magnetic conduction blocks is larger than that of the right-angle side of the L-shaped frame. After the magnet set is embedded in the right-angle side of the L-shaped frame, the side edge of the magnetic force conduction block is exposed out of the right-angle side of the L-shaped frame and used for attracting a workpiece to be welded. According to the utility model, the structure of the positioner is simplified, the influence of magnetic force between the magnetic blocks is avoided, the service life is prolonged, and the positioner can be used for cylindrical welding parts.

Description

Technical Field

[0001] The utility model relates to the technical field of welding and fixing jigs, in particular to a handheld profile welding positioner. Background Art

[0002] When welding two separate materials together, it is usually necessary to use a positioner to first position the two materials so that they are in contact, and then weld the welding points. The commonly used positioner is a magnetic positioner. For example, the utility model patent with the authorization announcement number CN212350915 and the name of a magnetic welding positioner discloses a magnetic positioner. However, this positioner has the following disadvantages:

[0003] (1) This positioner requires a mounting base to install and fix the magnetic block, and the mounting base is divided into upper and lower parts. There is a rotating magnetic block in the middle. By rotating the rotating magnetic block, all the magnets on the same side of the upper and lower parts have the same magnetic pole orientation, thereby realizing the switch. This method makes the internal structure of the positioner complex and the manufacturing cost high.

[0004] (2) This positioner needs to set magnetic isolation grooves on the mounting base to solve the problem of the mutual influence of the magnetic forces of the fixed magnetic blocks in the upper and lower parts. However, the magnetic isolation grooves do not solve the problem of the mutual influence of the magnetic forces between the central rotating magnetic block and the upper and lower fixed magnetic blocks, reducing the service life of the magnets.

[0005] (3) The working surface of a common welding and fixing device is a long strip magnet, which is only suitable for planar welding assistance and cannot be applied to cylindrical workpieces.

[0006] (4) A common welding and fixing device has no handle, making it inconvenient and inflexible to pick up and use. Summary of the Invention

[0007] In order to simplify the structure of the positioner, reduce the manufacturing cost, avoid the magnetic influence between the magnetic blocks, extend the service life, and make the positioner suitable for cylindrical workpieces and easy to take, the utility model provides a handheld profile welding positioner, which is characterized by comprising an L-shaped frame and two magnet groups respectively embedded in the two right-angled sides of the L-shaped frame, the magnet group is composed of a rectangular magnet, a semi-cylindrical iron block, an inner aluminum tube, an outer aluminum tube and a magnetic conduction block, the rectangular magnet is arranged on the central axis of the magnet group, and the left side and the right side of the rectangular magnet are respectively tightly fitted with one of the semi-cylindrical iron blocks, The semi-cylindrical iron block is fixedly nested inside the inner aluminum tube, and the rectangular magnet, semi-cylindrical iron block and inner aluminum tube form a whole; the outer aluminum tube is nested on the outer side of the inner aluminum tube, and the inner aluminum tube can rotate inside the outer aluminum tube. An iron magnetic conduction block is bonded to each of the left and right sides of the outer aluminum tube, and the width of the magnetic conduction block is greater than the width of the right-angled side of the L-shaped frame. After the magnet group is embedded in the right-angled side of the L-shaped frame, the side of the magnetic conduction block is exposed to the right-angled side of the L-shaped frame, and the middle cavity of the exposed part of the magnetic conduction block is used to adsorb the workpiece to be welded.

[0008] The inner aluminum tube and the outer aluminum tube are both thin aluminum tubes and will not shield the magnetic lines of force.

[0009] Inclined surfaces are arranged on the opposite inner side surfaces of the exposed parts of the two magnetic conduction blocks, and the two opposite inclined surfaces form an "eight"-shaped clamping portion, which is used to adsorb the cylindrical workpiece to be welded.

[0010] The length of the inner aluminum tube is the same as that of the rectangular magnet, and the length of the semi-cylindrical iron block is greater than the total length of the rectangular magnet, that is, the length of the semi-cylindrical iron block is greater than the length of the inner aluminum tube, the bottoms of the two semi-cylindrical iron blocks are flush with the bottoms of the rectangular magnet and the bottoms of the inner aluminum tube, the tops of the two semi-cylindrical iron blocks protrude from the tops of the rectangular magnet and the tops of the inner aluminum tube, a groove is formed between the tops of the two semi-cylindrical iron blocks, and the groove extends out from the top of the inner aluminum tube and is exposed.

[0011] A rotating shaft is inserted into the groove, and rotating the rotating shaft can drive the rectangular magnet, the semi-cylindrical iron block and the inner aluminum tube to rotate as a whole in the outer aluminum tube.

[0012] The rotating shaft is divided into a rotating block at the bottom and a cylindrical shaft at the top. The rotating block is embedded in the groove. An upper cover is fixedly provided on the top of the outer aluminum tube. After the cylindrical shaft passes through the circular hole in the center of the upper cover, a rotating switch is fixedly provided on the top. Turning the rotating switch can drive the rotating shaft to rotate.

[0013] The bottom of the outer aluminum tube is closed by a rear cover.

[0014] Reinforcing ribs are provided at the inner included angle of the two right-angled sides of the L-shaped frame.

[0015] The ends of the two right-angled sides of the L-shaped frame are connected by a handle. The two ends of the handle are respectively welded to the ends of the two right-angled sides of the L-shaped frame, and anti-slip threads are provided on the handle.

[0016] An elastic pin is provided on one side of the rotary switch to fix the rotary switch on the top of the cylindrical shaft.

[0017] The rectangular parallelepiped magnet is composed of two or more magnets connected radially.

[0018] The utility model has the following advantages:

[0019] 1. Streamline the internal structure, reduce the number of magnets, and save costs.

[0020] 2. Solve the problem that the central rotating magnet and the surrounding fixed magnets of the existing products are affected, and extend the service life of the magnets.

[0021] 3. The externally exposed parts of the two magnetic conduction blocks and the inner aluminum tube form an "eight" shape structure, increasing the adsorption angle and enabling the adsorption of circular workpieces.

[0022] 4. The magnetic conduction blocks are externally exposed, expanding the adsorption surface and enhancing the adsorption force on the workpiece.

[0023] 5. The aluminum alloy frame is injection-molded, and the two right-angled sides are further fixed by reinforcing ribs. The reinforcing ribs enhance the strength of the aluminum alloy frame, resist deformation and cracking, and are integrated with the aluminum alloy frame.

[0024] 6. The newly designed handle can adsorb small workpieces on the welding positioner, take away the welding fixture and the workpiece together, which is convenient to use, and the handle has threads and has an anti-slip function. Brief Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the split structure of the magnet group of the utility model.

[0026] Figure 2 It is the front view of the assembled utility model.

[0027] Figure 3 It is the left view of the assembled utility model.

[0028] Figure 4 It is the cross-sectional schematic diagram of the assembled magnet group of the utility model.

[0029] Figure 5 This is a schematic diagram of magnetic field lines when the magnetic force of the magnet group of the present utility model is turned on.

[0030] Figure 6 This is a schematic diagram of magnetic field lines when the magnetic force of the magnet group of the present utility model is turned off.

[0031] Reference numerals in the drawings:

[0032] L-shaped frame; 2. Magnet group; 3. Cuboid magnet; 4. Semi-cylindrical iron block; 5. Inner aluminum tube; 6. Outer aluminum tube; 7. Magnetic conduction block; 8. "Eight"-shaped clamping part; 9. Groove; 10. Rotating shaft; 11. Rotating chuck; 12. Cylindrical shaft;

[0033] 13. Upper cover; 14. Rotary switch; 15. Rear cover; 16. Reinforcing rib; 17. Handle; 18. Elastic pin. Detailed implementation manners

[0034] As Figures 1 to 6 shown, the present utility model provides a handheld profile welding positioner, which is characterized in that it is composed of an L-shaped frame 1 and two magnet groups 2 respectively embedded inside the two right-angle sides of the L-shaped frame 1. The magnet group 2 is composed of a cuboid magnet 3, a semi-cylindrical iron block 4, an inner aluminum tube 5, an outer aluminum tube 6 and a magnetic conduction block 7. The cuboid magnet 3 is arranged on the central axis of the magnet group 2. One semi-cylindrical iron block 4 is tightly attached to each of the left side and the right side of the cuboid magnet 3. The semi-cylindrical iron block 4 is fixedly nested inside the inner aluminum tube 5. The cuboid magnet 3, the semi-cylindrical iron block 4 and the inner aluminum tube 5 form a whole. The outer aluminum tube 6 is nested outside the inner aluminum tube 5. Utilizing the characteristic that aluminum does not have magnetic conductivity, the inner aluminum tube 5 can rotate inside the outer aluminum tube 6. One magnetic conduction block 7 made of iron is bonded to each of the left and right sides of the outer aluminum tube 6. The width of the magnetic conduction block 7 is greater than the width of the right-angle side of the L-shaped frame 1. After the magnet group 2 is embedded inside the right-angle side of the L-shaped frame 1, the side of the magnetic conduction block 7 is exposed outside the right-angle side of the L-shaped frame 1. The middle cavity of the exposed part of the magnetic conduction block 7 is used to adsorb the workpiece to be welded.

[0035] Both the inner aluminum tube 5 and the outer aluminum tube 6 are thin aluminum tubes and will not produce a shielding effect on magnetic field lines.

[0036] On the inner sides of the exposed parts of the two magnetic conduction blocks 7 facing each other, inclined surfaces are provided. The two opposite inclined surfaces form an "eight"-shaped clamping part 8, and the "eight"-shaped clamping part 8 is used to adsorb a cylindrical workpiece to be welded.

[0037] The length of the inner aluminum tube 5 is the same as the length of the cuboid magnet 3. The length of the semi-cylindrical iron block 4 is greater than the total length of the cuboid magnet 3, that is, the length of the semi-cylindrical iron block 4 is greater than the length of the inner aluminum tube 5. The bottoms of the two semi-cylindrical iron blocks 4 are flush with the bottom of the cuboid magnet 3 and the bottom of the inner aluminum tube 5. The tops of the two semi-cylindrical iron blocks 4 protrude from the top of the cuboid magnet 3 and the top of the inner aluminum tube 5. A groove 9 is formed between the tops of the two semi-cylindrical iron blocks 4, and the groove 9 extends out of the top of the inner aluminum tube 5 and is exposed.

[0038] A rotating shaft 10 is inserted into the groove 9. By rotating the rotating shaft 10, the cuboid magnet 3, the semi-cylindrical iron block 4 and the inner aluminum tube 5 as a whole can be driven to rotate in the outer aluminum tube 6.

[0039] The rotating shaft 10 is further divided into a rotating chuck 11 at the lower part and a cylindrical shaft 12 at the top. The rotating chuck 11 is embedded in the groove 9. A top cover 13 is fixedly arranged at the top of the outer aluminum tube 6. After the cylindrical shaft 12 passes through the circular hole in the center of the top cover 13, a rotary switch 14 is fixedly arranged at the top. By rotating the rotary switch 14, the rotating shaft 10 can be driven to rotate.

[0040] The bottom of the outer aluminum tube 6 is closed by a rear cover 15.

[0041] Reinforcing ribs 16 are arranged at the internal included angle of the two right-angled sides of the L-shaped frame 1.

[0042] The ends of the two right-angled sides of the L-shaped frame 1 are connected by a handle 17. The two ends of the handle 17 are respectively welded to the ends of the two right-angled sides of the L-shaped frame 1, and anti-slip threads are arranged on the handle 17.

[0043] An elastic pin 18 is arranged on one side of the rotary switch 14 to fix the rotary switch 14 at the top of the cylindrical shaft 12.

[0044] The cuboid magnet 3 is composed of two or more magnets radially connected.

[0045] In the present utility model, the cuboid magnet 3 is in the middle of the magnet group 2. Along the plane at the center of the magnet group 2, the magnet group 2 can be divided into NS two poles. The two semi-cylindrical iron blocks 4 are respectively installed on the NS sides of the magnet group. After rotating the rotary switch 14, the rotating shaft 10 drives the inner aluminum tube 5 inside the magnet group 2 to rotate inside the outer aluminum tube 6.

[0046] The theoretical basis of the present utility model is as follows:

[0047] A magnet always has a south pole and a north pole. A magnet can attract iron because of the magnetic field it possesses. The magnetic field of a magnet is described by magnetic induction lines. The magnetic induction lines of a magnet: outside, they go from N to S, and inside, they go from S to N; the magnetic induction lines of a magnet are a closed curve. When we analyze a rectangular magnet, its external magnetic induction lines emit from the N pole to the S pole, and inside, they "return" from the S pole to the N pole. The magnetic permeability of iron is greater than that of air, and the magnetic permeability of air is greater than that of aluminum. Iron will be affected by the magnet to generate a magnetic field while aluminum will not. The magnetic induction lines of the magnetic field formed by the influence on iron also go from N to S. Since the magnetic permeability of iron is stronger than that of aluminum, from the perspective of physical visualization, the magnetic force lines will preferentially pass through the iron with a large magnetic permeability (just like a car will choose a smooth road with a large vehicle-passing capacity). Therefore, the magnetic force lines passing through iron will become dense, while the magnetic force lines passing through aluminum will become sparse. When the magnetic force lines become sparse, the magnetic force becomes smaller, and vice versa, the magnetic force increases.

[0048] Based on the above theoretical knowledge, as Figure 5 shown, when the rotary switch 14 is rotated so that the N and S poles of the magnet group face the two magnetic conduction blocks 7 respectively, at this time, the magnetic force lines start from the N pole, pass through one side of the magnetic conduction block 7, and then reach the magnetic conduction block 7 on the other side. There is an external leakage part of the magnetic force lines, making the two magnetic conduction blocks 7 on both sides have suction force. In this case, the two magnetic conduction blocks 7 on both sides are affected by the magnet to generate a magnetic field. The magnetic force lines go from the N pole back to the S pole on the outside, generating a suction force, while the magnetic permeability of aluminum is low, and the magnetic force lines will not pass through the aluminum tube. The semi-circular iron block 4 conducts magnetic force and divides the north and south poles; taking advantage of the low magnetic permeability of aluminum, the inner aluminum tube 5 can drive the whole to rotate inside the outer aluminum tube 6; the magnetic conduction block 7 is affected by the magnet to generate a magnetic field, and the magnetic induction lines of the magnetic field leak out, making the magnetic adsorption surface have a suction force.

[0049] As Figure 6 shown, when the rotary switch 14 is rotated so that the magnet group rotates 90 degrees and the N and S poles both face the same magnetic conduction block 7, the magnetic force lines form a closed circuit in the two magnetic conduction blocks 7 respectively. At this time, due to the blockage of the inner aluminum tube 5 and the outer aluminum tube 6, there is no magnetic force line exposed, and the magnetic conduction blocks on both sides do not have suction force. In this case, since the magnetic permeability of iron is stronger than that of aluminum and air, the magnetic force lines will not go outside, but go inside the two magnetic conduction blocks 7 with strong magnetic permeability on both sides. The magnetic force lines do not leak out, making there be no magnetic force outside. At this time, the role of the magnetic conduction block 7 is to use its magnetic permeability to make the magnetic induction lines go inside the magnetic conduction block 7, not to make the magnetic field lines leak out, so that the magnetic adsorption surface has no suction force.

[0050] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A handheld profile welding locator, characterized in that, It is composed of an L-shaped frame (1) and two magnet groups (2) respectively embedded inside the two right-angled sides of the L-shaped frame (1). The magnet group (2) is composed of a cuboid magnet (3), a semi-cylindrical iron block (4), an inner aluminum tube (5), an outer aluminum tube (6) and a magnetic conduction block (7). The cuboid magnet (3) is arranged on the central axis of the magnet group (2). One semi-cylindrical iron block (4) is closely attached to the left side and the right side of the cuboid magnet (3) respectively. The semi-cylindrical iron block (4) is fixedly nested inside the inner aluminum tube (5). The cuboid magnet (3), the semi-cylindrical iron block (4) and the inner aluminum tube (5) form a whole. The outer aluminum tube (6) is nested outside the inner aluminum tube (5). The inner aluminum tube (5) can rotate inside the outer aluminum tube (6). One magnetic conduction block (7) made of iron is bonded to each of the left and right sides of the outer aluminum tube (6). The width of the magnetic conduction block (7) is greater than the width of the right-angled side of the L-shaped frame (1). After the magnet group (2) is embedded inside the right-angled side of the L-shaped frame (1), the side of the magnetic conduction block (7) is exposed outside the right-angled side of the L-shaped frame (1). The middle cavity between the exposed parts of the two magnetic conduction blocks (7) is used to adsorb the workpiece to be welded.

2. The hand-held profile welding locator according to claim 1, characterized in that, On the inner sides of the exposed parts of the two magnetic conduction blocks (7) facing each other, inclined surfaces are provided. The two opposite inclined surfaces form a "V"-shaped clamping part (8). The "V"-shaped clamping part (8) is used to adsorb the cylindrical workpiece to be welded.

3. The handheld profile welding positioner according to claim 1, wherein, The length of the inner aluminum tube (5) is the same as the length of the cuboid magnet (3). The length of the semi-cylindrical iron block (4) is greater than the total length of the cuboid magnet (3), that is, the length of the semi-cylindrical iron block (4) is greater than the length of the inner aluminum tube (5). The bottoms of the two semi-cylindrical iron blocks (4) are flush with the bottom of the cuboid magnet (3) and the bottom of the inner aluminum tube (5). The tops of the two semi-cylindrical iron blocks (4) protrude above the top of the cuboid magnet (3) and the top of the inner aluminum tube (5). A groove (9) is formed between the tops of the two semi-cylindrical iron blocks (4). The groove (9) extends out and is exposed from the top of the inner aluminum tube (5).

4. The hand-held profile welding positioner according to claim 3, wherein A rotating shaft (10) is inserted into the groove (9). By rotating the rotating shaft (10), the whole of the cuboid magnet (3), the semi-cylindrical iron block (4) and the inner aluminum tube (5) can be driven to rotate in the outer aluminum tube (6).

5. The hand-held profile welding positioner according to claim 4, wherein, The rotating shaft (10) is further divided into a lower rotating clamping block (11) and an upper cylindrical shaft (12). The rotating clamping block (11) is embedded in the groove (9). An upper cover (13) is fixedly arranged at the top of the outer aluminum tube (6). After the cylindrical shaft (12) passes through the circular hole in the center of the upper cover (13), a rotating switch (14) is fixedly arranged at the top. By rotating the rotating switch (14), the rotating shaft (10) can be driven to rotate.

6. The hand-held profile welding locator according to claim 5, characterized in that, The bottom of the outer aluminum tube (6) is closed by a rear cover (15).

7. The hand-held profile welding positioner according to claim 1, characterized in that, At the inner included angle of the two right-angle sides of the L-shaped frame (1), a reinforcing rib (16) is provided.

8. The hand-held profile welding positioner according to claim 1, characterized in that, At the ends of the two right-angle sides of the L-shaped frame (1), they are connected by a handle (17). The two ends of the handle (17) are respectively welded to the ends of the two right-angle sides of the L-shaped frame (1), and anti-slip threads are provided on the handle (17).

9. The hand-held profile welding positioner according to claim 5, characterized in that On one side of the rotary switch (14), an elastic pin (18) is provided to fix the rotary switch (14) on the top of the cylindrical shaft (12).

10. The hand-held profile welding positioner according to claim 1, characterized in that, The rectangular parallelepiped magnet (3) is composed of two or more magnets radially connected.

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