Locating clamp for right-angle welding of section bar

Abstract

The utility model provides a section bar right-angle welding positioning clamp which comprises a base, two positioning plates are arranged on the base, a gap is formed between the positioning plates, two clamping assemblies are further arranged on the base, each clamping assembly comprises a mounting plate, a clamping block and a cam, the mounting plates are arranged far away from the ends, close to each other, of the positioning plates, and the clamping blocks are arranged on the mounting plates. The included angle between the moving direction of the clamping block and the upper surface of the base is an acute angle, one end of the clamping block is provided with two positioning faces perpendicular to each other, one positioning face is parallel to the upper surface of the base, the other positioning face is parallel to the face, close to the clamping assembly, of the positioning plate, and the cam abuts against the clamping block and drives the clamping block to be close to the positioning plate. The clamping assembly further comprises a tension spring, and the tension spring drives the clamping block to be close to the cam. The technical problems that due to obstruction of welding tool parts, the operation space is small, and welding operation is inconvenient are solved, and the technical effects that the operation space of operators is enlarged, and the operators can conveniently operate welding equipment to conduct welding operation are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of profile processing, in particular to a profile right-angle welding positioning fixture. Background Art

[0002] Guardrail is a device used to protect personal safety and equipment in residential, highway, commercial areas, public places and other places. It is generally welded from multiple metal profiles, and during the guardrail processing process, it is usually necessary to weld two profiles into a right angle.

[0003] The Chinese utility model patent with the publication number CN210587817U discloses a 90° right-angle positioning welding tool, including a rectangular plate, a square tube A, a square tube B, a square tube C, a threaded screw and a hexagonal nut. Two square tubes A are provided to form a 90° right angle fixed on the rectangular plate, two square tubes B are connected with a square tube C to form a right-angle tripod, and the two right-angled square tubes B of the tripod are kept horizontally parallel to the two fixed square tubes A, and a square tube C is horizontally fixed on the bottom edge of the rectangular plate. A threaded hole is provided at the center position, and the hexagonal nut is fixed together with the threaded screw and connected to the tripod through the threaded hole. The center position of the threaded hole and the tripod is on the center line of the two square tubes A at a right angle of 90°, and the distance between the hexagonal bolt and the horizontal plane of the lower end of the tripod can be adjusted by the hexagonal bolt. When the above 90° right-angle positioning welding tool is used, the two cut profiles are placed between the square tube A2 and the tripod, and the profiles can be fixed by turning the hexagonal bolt to press the profiles. The clamping is convenient and the positioning is accurate.

[0004] During the use of the 90° right-angle positioning welding tooling disclosed in the above utility model patent, the welding point of the two profiles is located between the square tube A and the square tube B, and the square tube A and the square tube B are respectively in close contact with the profiles, resulting in a small space for operators to operate during the welding process, which is inconvenient for operators to operate welding equipment such as welding guns to perform welding operations. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a right-angle welding positioning fixture for profiles, which solves the problem in the prior art that the working space is small and the welding operation is inconvenient due to the obstruction of welding tooling parts.

[0006] According to an embodiment of the utility model, a profile right-angle welding positioning fixture includes a base, two mutually perpendicular positioning plates are provided on the base, and there is a gap between the ends of the positioning plates that are close to each other. The base is also provided with two clamping assemblies, and the two clamping assemblies are respectively arranged with a one-to-one correspondence and a gap with the two positioning plates. The clamping assembly includes a mounting plate fixed to the base, a clamping block movably arranged on the mounting plate, and a cam rotatably arranged on the mounting plate. The mounting plate is arranged away from the end of the positioning plates that are close to each other, the moving direction of the clamping block is an acute angle with the upper surface of the base, and the end of the clamping block close to the positioning plate has two mutually perpendicular positioning surfaces, one of which is parallel to the upper surface of the base, and the other is parallel to a side of the positioning plate close to the clamping assembly, the cam abuts against the clamping block and drives the clamping block close to the positioning plate, and the clamping assembly also includes a tension spring, and the opposite ends of the tension spring in the expansion and contraction direction respectively cooperate with the mounting plate and the clamping block and drive the clamping block close to the cam.

[0007] Furthermore, the clamping assembly also includes a matching first threaded rod and a first locking nut, the mounting plate is provided with a first threaded hole matching the first threaded rod, and the cam is provided with a through hole for the first threaded rod to pass through, the first locking nut abuts against the cam and presses the cam onto the mounting plate.

[0008] Furthermore, a first connecting ring is provided at one end of the tension spring close to the cam, and the first connecting ring is sleeved on the first threaded rod.

[0009] Furthermore, a connecting rod is provided at one end of the clamping block close to the cam, a second connecting ring is provided at one end of the tension spring away from the first connecting ring, and the second connecting ring is sleeved on the connecting rod.

[0010] Furthermore, a rotating handle is provided on the cam, and the rotating handle is located on a side of the cam away from the clamping block.

[0011] Furthermore, the clamping assembly also includes a matching second threaded rod and a second locking nut, the mounting plate is provided with a second threaded hole matching the second threaded rod, and the clamping block is provided with a waist-shaped hole for the second threaded rod to pass through, the second locking nut abuts against the clamping block and presses the clamping block onto the mounting plate.

[0012] Furthermore, the clamping block is provided with a guide groove spaced apart from the waist-shaped hole, the length direction of the guide groove is parallel to the length direction of the waist-shaped hole and consistent with the moving direction of the clamping block, and the mounting plate is provided with a guide pin extending into the guide groove and abutting against the inner wall of the guide groove.

[0013] Furthermore, buffer pads are respectively provided on the positioning surfaces, and the buffer pads are protruded toward the upper surface close to the base or toward a side of the positioning plate close to the clamping assembly.

[0014] Furthermore, the positioning plate is provided with a plurality of first mounting holes at intervals, and the base is provided with a plurality of third threaded holes aligned one by one with the first mounting holes.

[0015] Furthermore, the mounting plate is provided with a plurality of second mounting holes at intervals, and the base is provided with a plurality of fourth threaded holes aligned one by one with the second mounting holes.

[0016] Compared with the prior art, the utility model has the following beneficial effects: by adopting the positioning plate and the clamping assembly arranged on the base, the two profiles to be welded are clamped respectively, and after the two profiles to be welded are placed in a right-angle shape on the base, the two profiles are respectively fitted with the two positioning plates, and the connection point of the two profiles is located in the interval between the two positioning plates. After the profiles are placed, the cams on the mounting plates are respectively rotated to push the clamping blocks close to the profiles, so that the two positioning surfaces of the clamping blocks are respectively fitted with the profiles and the profiles are pressed against the base and the positioning plates to fix the position of the profiles, ensuring that the position of the profiles on the base remains stable during the welding process, and the mounting plate is arranged away from the ends where the two positioning plates are close to each other, so that there is sufficient space around the connection point of the two profiles for the operator to perform welding operations, and it is avoided that the parts of the profile right-angle welding positioning fixture are too close to the profile connection point to hinder the operator from operating the welding equipment. It solves the technical problem that the working space is small and it is inconvenient to perform welding operations due to the obstruction of welding tooling parts, and produces the technical effect of increasing the operating space of the operator and facilitating the operator to operate the welding equipment for welding operations, and the clamping operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a profile right-angle welding positioning fixture according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic structural diagram of a clamping assembly in a profile right-angle welding positioning fixture according to an embodiment of the utility model;

[0019] Figure 3 It is a partial exploded view of a clamping assembly in a profile right-angle welding positioning fixture according to an embodiment of the utility model;

[0020] Figure 4 The present invention is a schematic structural diagram of a clamping block in a right-angle welding positioning fixture for profiles according to an embodiment of the present invention.

[0021] In the above drawings: 1. base; 2. positioning plate; 21. first mounting hole; 3. mounting plate; 31. first threaded hole; 32. second threaded hole; 33. guide pin; 34. second mounting hole; 4. clamping block; 41. positioning surface; 42. connecting rod; 43. waist-shaped hole; 44. guide groove; 45. buffer pad; 5. cam; 51. through hole; 52. rotating handle; 6. tension spring; 61. first connecting ring; 62. second connecting ring; 7. first threaded rod; 72. first locking nut; 8. second threaded rod; 81. second locking nut. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 1 to 4 As shown, the embodiment of the utility model provides a profile right-angle welding positioning fixture, which is used to clamp two profiles to be welded and keep the two profiles perpendicular to each other, so as to facilitate welding the two profiles into a right-angle shape.

[0024] like Figure 1 and Figure 2 As shown, the right-angle welding positioning fixture for profiles includes a base 1, on which two positioning plates 2 are arranged, the two positioning plates 2 are perpendicular to each other and there is a gap between the ends of the two positioning plates 2 that are close to each other, and the base 1 is also provided with two clamping components, the two clamping components are arranged with a one-to-one correspondence with the two positioning plates 2, and the clamping components include a mounting plate 3 fixed to the base 1 and the mounting plate 3 is arranged away from the ends of the two positioning plates 2 that are close to each other, a movable clamping block 4 and a rotatable cam 5 are arranged on the mounting plate 3, and the angle between the moving direction of the clamping block 4 on the mounting plate 3 and the upper surface of the base 1 is It is an acute angle, and the end of the clamping block 4 close to the positioning plate 2 has two mutually perpendicular positioning surfaces 41, one of which is parallel to the upper surface of the base 1, and the other is parallel to the side of the positioning plate 2 close to the clamping assembly. The cam 5 abuts against the clamping block 4 and drives the clamping block 4 to move toward the positioning plate 2 when the cam 5 rotates. The clamping assembly also includes a tension spring 6, and the opposite ends of the tension spring 6 in the expansion and contraction direction are respectively matched with the mounting plate 3 and the clamping block 4. The elastic force provided by the tension spring 6 drives the clamping block 4 to approach the cam 5 and keep it abutting against the cam 5.

[0025] Specifically, the operating steps of the right-angle welding operation of the profile using the right-angle welding positioning fixture provided in this embodiment are as follows: first, the two profiles to be welded are placed in a right-angle shape on the base 1 and the two profiles are respectively fitted with the two positioning plates 2 one by one, and the connection between the two profiles is placed in the interval between the two positioning plates 2. After the profiles are placed, the cams 5 on the mounting plates 3 are respectively rotated so that the corresponding clamping blocks 4 are pushed by the cams 5 to approach the profiles until the two positioning surfaces 41 of the clamping blocks 4 are respectively fitted with the profiles, so as to press the profiles tightly against the base 1 and the positioning plates 2, the position of the profile can be fixed and the position of the profile on the base 1 can be ensured to remain stable during welding. At this time, the connection of the two profiles can be welded and fixed, and there is sufficient space around the connection of the two profiles for the operator to perform welding operations, which effectively avoids the parts of the profile right-angle welding positioning fixture being too close to the profile connection to hinder the operator from operating the welding equipment; after the two profiles are welded together, the cam 5 is rotated in the opposite direction so that the clamping block 4 is driven by the tension spring 6 to move away from the profile to release the clamping of the profile. At this time, the welded profile can be removed from the profile right-angle welding positioning fixture. The profile right-angle welding positioning fixture provided in this embodiment increases the operating space for operators when performing welding operations, facilitates operators to operate welding equipment such as welding guns for welding operations, and the clamping and disassembly operations of the profile right-angle welding positioning fixture are simple, and easy to use.

[0026] Please combine Figure 2 and Figure 3In this embodiment, the clamping assembly also includes a matching first threaded rod 7 and a first locking nut 72, the mounting plate 3 is provided with a first threaded hole 31 matching with the first threaded rod 7, and the cam 5 is provided with a through hole 51 for the first threaded rod 7 to pass through, the first locking nut 72 abuts against the cam 5 and presses the cam 5 onto the mounting plate 3. The first threaded rod 7 is installed on the mounting plate 3 by cooperating with the first threaded hole 31, and the cam 5 is provided with a through hole 51 cooperating with the first threaded rod 7, so that the cam 5 can rotate smoothly on the mounting plate 3. During the rotation of the cam 5, the distance between the center of the through hole 51 and the contact point between the cam 5 and the clamping block 4 increases or decreases with the movement of the cam 5, thereby driving the clamping block 4 to move on the mounting plate 3, and the first threaded rod 7 is provided with the first locking nut 72. The position of the cam 5 can be locked by rotating the first locking nut 72 so that the first locking nut 72 abuts against the cam 5 and presses the cam 5 against the mounting plate 3 to prevent the cam 5 from rotating unexpectedly during the welding operation. After the welding operation is completed, when the cam 5 needs to be rotated to remove the profile, the first locking nut 72 can be rotated in the opposite direction so that the first locking nut 72 is away from the cam 5. The operation is simple.

[0027] like Figure 3 and Figure 4 As shown, the first connecting ring 61 is provided at one end of the tension spring 6 close to the cam 5, and the first connecting ring 61 is sleeved on the first threaded rod 7. The first connecting ring 61 is provided at one end of the tension spring 6, and the first connecting ring 61 is sleeved on the first threaded rod 7 to fix one end of the tension spring 6 on the first threaded rod 7, thereby ensuring a stable connection between the tension spring 6 and the mounting plate 3.

[0028] In detail, the end of the clamping block 4 close to the cam 5 is provided with a connecting rod 42, and the end of the tension spring 6 away from the first connecting ring 61 is provided with a second connecting ring 62, and the second connecting ring 62 is sleeved on the connecting rod 42. By arranging the connecting rod 42 on the clamping block 4 and arranging the second connecting ring 62 matched with the connecting rod 42 on the tension spring 6, one end of the tension spring 6 is kept on the clamping block 4, so that the tension spring 6 is extended or shortened with the movement of the clamping block 4 during the movement of the clamping block 4, and the clamping block 4 is kept in contact with the cam 5.

[0029] Please refer to Figure 2The cam 5 is provided with a rotating handle 52, and the rotating handle 52 is located on the side of the cam 5 away from the clamping block 4. The rotating handle 52 is provided on the cam 5, and the cam 5 can be easily rotated and the rotating direction of the cam 5 can be controlled by operating the rotating handle 52, so as to adjust the moving stroke and moving direction of the clamping block 4, and facilitate the use of the profile right-angle welding positioning fixture.

[0030] Please combine Figure 3 and Figure 4 The clamping assembly also includes a matching second threaded rod 8 and a second locking nut 81. The mounting plate 3 is provided with a second threaded hole 32 matching with the second threaded rod 8, and the clamping block 4 is provided with a waist-shaped hole 43 for the second threaded rod 8 to pass through. The second locking nut 81 abuts against the clamping block 4 and presses the clamping block 4 onto the mounting plate 3. The second threaded hole 32 is provided on the mounting plate 3 for the installation of the second threaded rod 8, and the clamping block 4 is provided with a waist-shaped hole matching the second threaded rod 8. When the clamping block 4 moves on the mounting plate 3, the second threaded rod 8 slides in the waist-shaped hole and the abutment between the second threaded rod 8 and the inner wall of the waist-shaped hole limits the movement of the clamping block 4 on the mounting plate 3. After the clamping block 4 is moved to the position for clamping the profile, the second locking nut 81 is rotated so that the second locking nut 81 presses the clamping block 4 against the mounting plate 3, thereby locking the position of the clamping block 4 to prevent the clamping block 4 from loosening during the welding operation and causing the profile to shake accidentally. After the profile welding is completed, the second locking nut 81 is rotated in the opposite direction so that the second locking nut 81 is away from the clamping block 4, thereby releasing the lock on the clamping block 4, so as to facilitate the removal of the welded profile.

[0031] Specifically, the clamping block 4 is further provided with a guide groove 44 spaced apart from the waist-shaped hole 43, the length direction of the guide groove 44 is parallel to the length direction of the waist-shaped hole 43 and consistent with the moving direction of the clamping block 4, and the mounting plate 3 is provided with a guide pin 33 extending into the guide groove 44 and abutting against the inner wall of the guide groove 44. The guide groove 44 is provided on the clamping block 4, and the guide pin 33 matched with the guide groove 44 is provided on the mounting plate 3 to limit the moving direction of the clamping block 4 on the mounting plate 3, to prevent the clamping block 4 from deviating from the preset direction when moving, and the length direction of the guide groove 44 is parallel to the diagonal direction of the profile after being placed on the base 1, to ensure that the two positioning surfaces 41 on the clamping block 4 can respectively abut against the two surfaces of the profile, which is conducive to improving the stability of the position of the profile after being clamped.

[0032] like Figure 1 and Figure 4As shown, the positioning surfaces 41 are respectively provided with buffer pads 45, and the buffer pads 45 are protruding toward the upper surface close to the base 1 or the side of the positioning plate 2 close to the clamping assembly. The buffer pads 45 respectively provided on the two positioning surfaces 41 are made of elastic materials such as silicone or foam. When the positioning surfaces 41 abut against the profile, the buffer pads 45 are in direct contact with the profile to prevent the profile from being deformed after being squeezed by the clamping block 4 or being scratched by the clamping block 4, thereby improving product quality.

[0033] Please refer to Figure 1 The positioning plate 2 is provided with a plurality of first mounting holes 21 at intervals, and the base 1 is provided with a plurality of third threaded holes aligned with the first mounting holes 21. The positioning plate 2 can be fixed to the base 1 by bolts passing through the first mounting holes 21 and cooperating with the third threaded holes, thereby preventing the positioning plate 2 from loosening and keeping the two positioning plates 2 at a mutually perpendicular position, thereby preventing the positioning plate 2 from deviating and causing poor verticality of the two profiles after welding.

[0034] In detail, the mounting plate 3 is provided with a plurality of second mounting holes 34 at intervals, and the base 1 is provided with a plurality of fourth threaded holes aligned one by one with the second mounting holes 34. The mounting plate 3 can be mounted on the base 1 by passing bolts through the second mounting holes 34 and engaging with the fourth threaded holes, and the position of the mounting plate 3 on the base 1 is kept stable, ensuring that the overall structure of the profile right-angle welding positioning fixture is firm.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A profile right-angle welding positioning fixture, characterized in that: The cam abuts against the clamping block and drives the clamping block to approach the positioning plate. The clamping assembly also includes a tension spring, and the two opposite ends of the tension spring cooperate with the mounting plate and the clamping block to drive the clamping block to approach the positioning plate.

2. A profile right-angle welding positioning fixture as claimed in claim 1, characterized in that: The clamping assembly also includes a matching first threaded rod and a first locking nut. The mounting plate is provided with a first threaded hole matching the first threaded rod, and the cam is provided with a through hole for the first threaded rod to pass through. The first locking nut abuts against the cam and presses the cam onto the mounting plate.

3. A profile right-angle welding positioning fixture as claimed in claim 2, characterized in that: A first connecting ring is provided at one end of the tension spring close to the cam, and the first connecting ring is sleeved on the first threaded rod.

4. A profile right-angle welding positioning fixture as claimed in claim 3, characterized in that: A connecting rod is provided at one end of the clamping block close to the cam, and a second connecting ring is provided at one end of the tension spring away from the first connecting ring, and the second connecting ring is sleeved on the connecting rod.

5. A profile right-angle welding positioning fixture as claimed in claim 1, characterized in that: The cam is provided with a rotating handle, and the rotating handle is located at a side of the cam away from the clamping block.

6. A profile right-angle welding positioning fixture as claimed in claim 1, characterized in that: The clamping assembly also includes a matching second threaded rod and a second locking nut. The mounting plate is provided with a second threaded hole matching the second threaded rod, and the clamping block is provided with a waist-shaped hole for the second threaded rod to pass through. The second locking nut abuts against the clamping block and presses the clamping block onto the mounting plate.

7. A profile right-angle welding positioning fixture as claimed in claim 6, characterized in that: The clamping block is also provided with a guide groove spaced apart from the waist-shaped hole, the length direction of the guide groove is parallel to the length direction of the waist-shaped hole and consistent with the moving direction of the clamping block, and the mounting plate is provided with a guide pin extending into the guide groove and abutting against the inner wall of the guide groove.

8. A profile right-angle welding positioning fixture as claimed in claim 1, characterized in that: Buffer pads are respectively arranged on the positioning surfaces, and the buffer pads are protruded toward the upper surface close to the base or toward a side of the positioning plate close to the clamping assembly.

9. A profile right-angle welding positioning fixture as claimed in claim 1, characterized in that: The positioning plate is provided with a plurality of first mounting holes at intervals, and the base is provided with a plurality of third threaded holes aligned one by one with the first mounting holes.

10. A profile right-angle welding positioning fixture as claimed in claim 1, characterized in that: The mounting plate is provided with a plurality of second mounting holes at intervals, and the base is provided with a plurality of fourth threaded holes aligned one by one with the second mounting holes.

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