Composite tool for assembling and welding roller shaft heads of forklifts

Abstract

The utility model relates to the technical field of manufacturing of parts of forklifts, in particular to a composite tool for assembling and welding a roller shaft head and a mounting plate of a forklift. The tool comprises a fixing plate, wherein a plurality of pin holes and threaded holes are formed in the fixing plate; the at least two positioning sleeves are vertically mounted on the fixing plate through positioning pins and screws; and the limiting plate is mounted in the fixing plate and the positioning sleeve through a positioning pin and a screw and is used for limiting the circumferential position of the roller shaft head. The method is characterized in that tool positioning is adopted to replace traditional sample plate positioning, rapid and accurate positioning and mounting of the roller shaft head and the mounting plate are achieved, meanwhile, shielding protection is conducted on the shaft head in the welding process, and the surface of the shaft head is prevented from being damaged by welding spatter. The tool has the advantages of being accurate and reliable in positioning, convenient to operate and high in efficiency, the assembling and welding quality and production efficiency of the forklift roller shaft head can be effectively improved, and the tool is suitable for assembling and welding operation of the forklift roller shaft head and particularly suitable for welding scenes needing high-precision positioning and shaft head surface protection.

Description

Technical Field

[0001] This utility model relates to the field of forklift parts manufacturing technology, specifically a composite tooling for welding forklift roller axle heads and mounting plates. Background Technology

[0002] Forklift roller axle heads are crucial components of forklifts, housing rollers that guide and provide lateral load during lifting. The positional and dimensional accuracy of these roller axle heads significantly impacts the overall performance of the forklift. Current technology employs template positioning for welding the forklift roller axle head to the mounting plate, followed by welding. This method fails to guarantee the required repeatability of component positions, is inefficient, and the welding process does not shield the axle head surface, leading to potential damage from welding spatter. Utility Model Content

[0003] In order to improve the welding efficiency and accuracy of welding forklift roller axle heads to mounting plates, this utility model provides a composite tooling for welding forklift roller axle heads, including a fixing plate with multiple pin holes and threaded holes.

[0004] At least two positioning sleeves are vertically mounted on the fixing plate by positioning pins and screws;

[0005] The limiting plate, installed inside the fixing plate and the positioning sleeve by positioning pins and screws, is used to limit the circumferential position of the roller shaft head.

[0006] In one embodiment, the limiting plate has a rectangular cross-sectional shape that matches the rectangular notch of the roller shaft head, thereby ensuring that the roller shaft head notch faces in a consistent direction.

[0007] In one embodiment, the pin holes on the fixing plate correspond one-to-one with the installation positions of the positioning sleeve, and the spacing of the pin holes matches the design position accuracy of the roller shaft head.

[0008] In one embodiment, the inner diameter of the positioning sleeve is adapted to the outer diameter of the roller shaft head.

[0009] In one embodiment, the inner wall of the positioning sleeve is magnetic.

[0010] In one embodiment, the inner hole of the positioning sleeve is interference-fitted with the roller shaft head.

[0011] In one embodiment, the surface of the fixing plate is provided with waist holes to reduce the overall weight of the composite tooling.

[0012] Beneficial effects:

[0013] This invention employs a positioning sleeve and a limiting plate to position the roller shaft head, accurately determining its spatial position on the fixed plate while ensuring consistent notch orientation between the two roller shaft heads. This solves the deviation problem inherent in traditional template positioning, effectively improving product assembly accuracy. Furthermore, the tooling enables rapid positioning and installation of the roller shaft head on the fixed plate, replacing the previously time-consuming manual template positioning and marking operations. This significantly shortens preparation time before welding, improves production efficiency, and meets the demands of modern production for high-efficiency operations. In addition, during welding, the tooling effectively shields and protects the shaft head, preventing welding spatter from damaging its surface, reducing rework due to surface damage, and improving product surface quality and service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the tooling of this utility model.

[0015] Figure 2 This is a schematic diagram of the tooling assembly structure of this utility model.

[0016] Figure 3 This is a schematic cross-sectional view of the tooling assembly of this utility model.

[0017] Figure 4 This is a schematic diagram illustrating the use of the tooling of this utility model.

[0018] Figure 5 This is a schematic diagram of the assembly of the roller shaft head and the shaft head fixing plate of this utility model.

[0019] In the diagram: 1. Fixing plate; 2. Positioning sleeve; 3. Limiting plate; 4. Roller shaft head; 5. Shaft head fixing plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a welding composite tooling for a forklift roller axle head 4, including a fixed plate 1 with multiple pin holes and threaded holes; at least two positioning sleeves 2, which are vertically installed on the fixed plate 1 by positioning pins and screws; and a limiting plate 3, which is installed inside the fixed plate 1 and the positioning sleeves 2 by positioning pins and screws, for limiting the circumferential position of the roller axle head 4.

[0022] When using this fixture to weld the forklift roller axle heads 4, first insert the two roller axle heads 4 into the positioning sleeve 2 respectively. The rectangular opening of the roller axle head 4 will align with the lower end of the limiting plate 3, thereby accurately positioning the two roller axle heads 4, ensuring the spatial position of the roller axle heads 4 on the axle head fixing plate 5, and ensuring that the notches of the two roller axles face in the same direction.

[0023] One method is to make the positioning sleeve 2 magnetic by fixing a magnet to the end of its inner hole. When the roller shaft head 4 is inserted into the positioning sleeve 2, it will be attracted to the positioning sleeve 2 due to this magnetism, facilitating the transfer of the roller shaft head 4 after installation and positioning. Alternatively, the inner hole of the positioning sleeve 2 can be set to have an interference fit with the roller shaft head 4. This utilizes the clamping and frictional force between the positioning sleeve 2 and the side wall of the roller shaft head 4 to fix the roller shaft head 4 inside the positioning sleeve 2, thus facilitating its transfer.

[0024] Then, the two roller shaft heads 4, which have already been positioned, are transferred together with the tooling to the top of the shaft head fixing plate 5, and then inserted into the shaft head fixing plate 5 as a whole to complete the positioning action. Finally, the operator completes the welding of the roller shaft heads 4 and the shaft head fixing plate 5.

[0025] During the overall transfer of the tooling, a waist hole can be made on the surface of the fixing plate 1 to make the middle of the fixing plate 1 hollow. This makes it easier for people to hold the tooling and reduces the overall weight of the tooling as much as possible, thus reducing the labor intensity during the transfer process.

[0026] Since the roller shaft head 4 is located inside the positioning sleeve 2 and its outer surface is completely covered by the positioning sleeve 2, the tooling can shield and protect the roller shaft head 4 during the welding process, preventing welding spatter from damaging the shaft head surface.

[0027] After welding is completed, remove the tooling vertically upwards to complete the entire operation.

[0028] In summary, the composite tooling for assembling and welding for forklift roller axle heads 4 according to this utility model has the characteristics of accurate and reliable positioning, convenient operation, and high efficiency, and can effectively improve the welding quality and production efficiency of forklift roller axle heads 4.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite tooling for welding the axle heads of forklift rollers, characterized in that, include: A fixing plate (1) is provided with multiple pin holes and threaded holes; at least two positioning sleeves (2) are vertically installed on the fixing plate (1) by positioning pins and screws; a limiting plate (3) is installed inside the fixing plate (1) and the positioning sleeves (2) by positioning pins and screws, and is used to limit the circumferential position of the roller shaft head.

2. The composite tooling for welding forklift roller axle heads according to claim 1, characterized in that: The limiting plate (3) has a rectangular cross-sectional shape, which is adapted to the rectangular notch of the roller shaft head (4) to ensure that the notch of the roller shaft head (4) is oriented in a consistent manner.

3. The composite tooling for welding forklift roller axle heads according to claim 1, characterized in that: The pin holes on the fixing plate (1) correspond one-to-one with the installation positions of the positioning sleeve (2), and the spacing of the pin holes matches the design position accuracy of the roller shaft head (4).

4. The composite tooling for welding forklift roller axle heads according to claim 1, characterized in that: The inner diameter of the positioning sleeve (2) is adapted to the outer diameter of the roller shaft head (4).

5. The composite tooling for welding forklift roller axle heads according to claim 4, characterized in that: The inner wall of the positioning sleeve (2) is magnetic.

6. The composite tooling for welding forklift roller axle heads according to claim 1, characterized in that: The inner hole of the positioning sleeve (2) is interference-fitted with the roller shaft head (4).

7. The composite tooling for welding forklift roller axle heads according to claim 1, characterized in that: The surface of the fixing plate (1) is provided with waist holes to reduce the overall weight of the composite tooling.

Images