A positioning device having an internal cavity shape

Abstract

This invention discloses a positioning device with an internal cavity shape, comprising: a first positioning plate, a second positioning plate, a third positioning plate, and a fourth positioning plate. The first positioning plate is connected to the third and fourth positioning plates at both ends, and the second positioning plate is also connected to the third and fourth positioning plates at both ends. The second positioning plate is disposed on one side of the first positioning plate. A cavity is formed within the area enclosed by the first, second, third, and fourth positioning plates, and the cavity has a structure that is wider at the top and narrower at the bottom. A first elastic element is disposed between the first, third, and fourth positioning plates, and a second elastic element is disposed between the second, third, and fourth positioning plates. Multiple positioning holes are provided on each of the first, second, third, and fourth positioning plates. This invention can solve the problems of large welding errors and low efficiency in existing parts with internal cavity structures.

Description

Technical Field

[0001] This invention relates to a positioning device, and more particularly to a positioning device having an internal cavity shape. Background Technology

[0002] In the machining process, for parts with internal cavity structures, such as gearbox housings and motor housings, welding is usually done by welding two parts together before welding the next part. This welding method will increase the error between parts and make it difficult to ensure that the machining error falls within the tolerance range, which can easily cause the workpiece to be scrapped and will also affect the machining efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a positioning device with an internal cavity shape in order to solve the problems of large welding errors and low efficiency of existing parts with internal cavity structures.

[0004] To achieve the above objectives, the present invention provides a positioning device with an internal cavity shape, comprising: a first positioning plate, a second positioning plate, a third positioning plate, and a fourth positioning plate. The first positioning plate has its two ends connected to the third and fourth positioning plates, and the second positioning plate has its two ends connected to the third and fourth positioning plates, respectively. The second positioning plate is disposed on one side of the first positioning plate. A cavity is provided within the area enclosed by the first, second, third, and fourth positioning plates. The cavity has a structure that is wider at the top and narrower at the bottom. A first elastic element is provided between the first, third, and fourth positioning plates, and a second elastic element is provided between the second, third, and fourth positioning plates. Multiple positioning holes are provided on each of the first, second, third, and fourth positioning plates.

[0005] As a further description of the above technical solution:

[0006] The third positioning plate and the fourth positioning plate are detachably connected to the first positioning plate, and the third positioning plate and the fourth positioning plate are detachably connected to the second positioning plate.

[0007] As a further description of the above technical solution:

[0008] The first positioning plate has locking blocks at both ends, and the third and fourth positioning plates are provided with locking slots. The locking blocks are inserted into the locking slots. The first positioning plate and the second positioning plate have the same structure.

[0009] As a further description of the above technical solution:

[0010] Both the first elastic element and the second elastic element are provided with a first through hole, the size of which is adapted to the size of the card block.

[0011] As a further description of the above technical solution:

[0012] The first positioning plate is a rectangular plate, and a second through hole is provided on the first positioning plate.

[0013] As a further description of the above technical solution:

[0014] Both the third positioning plate and the fourth positioning plate are equipped with handles.

[0015] As a further description of the above technical solution:

[0016] The third positioning plate and the fourth positioning plate are respectively provided with a third through hole.

[0017] As a further description of the above technical solution:

[0018] Both the first elastic element and the second elastic element are elastic rubber pads.

[0019] As a further description of the above technical solution:

[0020] A fifth positioning plate is provided between the third positioning plate and the fourth positioning plate, and the fifth positioning plate abuts against the side of the first positioning plate.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] 1. In this invention, a first positioning plate, a second positioning plate, a third positioning plate, and a fourth positioning plate are set up. These four positioning plates form a shape that matches the finished part. During welding, the sheet metal that makes up the part is attached to the corresponding positioning plate. A positioning pin is inserted through the hole on the sheet metal to complete the positioning of the sheet metal. Welding is then performed. Finally, the positioning pin is removed, and the entire device is pulled out. This allows for fast and accurate positioning, and the operation is simple and convenient.

[0023] 2. In this invention, by providing a first elastic element between the first positioning plate and the third and fourth positioning plates, and a second elastic element between the second positioning plate and the third and fourth positioning plates, the first and second elastic elements can provide deformation space when the first, second, third, and fourth positioning plates expand due to heat during long-term use. This prevents the structure formed by the first, second, third, and fourth positioning plates from bulging and deforming, thereby improving the welding quality of the product. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a positioning device with an internal cavity shape.

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0027] Figure 3 This is a schematic diagram of the connection structure between the first positioning plate and the third positioning plate in a positioning device with an internal cavity shape.

[0028] Legend:

[0029] 1. First positioning plate; 2. Second positioning plate; 3. Third positioning plate; 4. Fourth positioning plate; 5. Cavity; 6. First elastic element; 7. Second elastic element; 8. Positioning hole; 9. Locking block; 10. Locking groove; 11. First through hole; 12. Second through hole; 13. Handle; 14. Third through hole; 15. Fifth positioning plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example 1:

[0036] Please see Figure 1-3 This invention provides a positioning device with an internal cavity shape, comprising: a first positioning plate 1, a second positioning plate 2, a third positioning plate 3, and a fourth positioning plate 4. The two ends of the first positioning plate 1 are respectively connected to the third positioning plate 3 and the fourth positioning plate 4. The two ends of the second positioning plate 2 are also respectively connected to the third positioning plate 3 and the fourth positioning plate 4. The second positioning plate 2 is disposed on one side of the first positioning plate 1. A cavity 5 is provided within the area enclosed by the first positioning plate 1, the second positioning plate 2, the third positioning plate 3, and the fourth positioning plate 4. The cavity 5 has a structure that is wider at the top and narrower at the bottom. A first elastic element 6 is provided between the first positioning plate 1, the third positioning plate 3, and the fourth positioning plate 4. A second elastic element 7 is provided between the second positioning plate 2, the third positioning plate 3, and the fourth positioning plate 4. Multiple positioning holes 8 are provided on each of the first positioning plate 1, the second positioning plate 2, the third positioning plate 3, and the fourth positioning plate 4.

[0037] Specifically, the third positioning plate 3 and the fourth positioning plate 4 are detachably connected to the first positioning plate 1, and the third positioning plate 3 and the fourth positioning plate 4 are detachably connected to the second positioning plate 2.

[0038] Specifically, both the third positioning plate 3 and the fourth positioning plate 4 are provided with handles 13. This makes it easy to carry the entire device by hand.

[0039] Specifically, a fifth positioning plate 15 is provided between the third positioning plate 3 and the fourth positioning plate 4, and the fifth positioning plate 15 abuts against the side of the first positioning plate 1. This makes the entire device more stable.

[0040] In summary, due to the adoption of the above technical solution, the beneficial effects of this invention are as follows: By setting the first, second, third, and fourth positioning plates, these plates form a shape that matches the finished part. During welding, the sheet metal constituting the part is attached to the corresponding positioning plate. A positioning pin is inserted through the hole on the sheet metal into the positioning hole to complete the positioning of the sheet metal. Welding is then performed, and finally, the positioning pin is removed, and the entire device is pulled out. This achieves rapid and accurate positioning, and the operation is simple and convenient. By setting a first elastic element between the first, third, and fourth positioning plates, and a second elastic element between the second, third, and fourth positioning plates, the first and second elastic elements can provide deformation space when the first, second, third, and fourth positioning plates expand due to heat during long-term use. This prevents the structure formed by the first, second, third, and fourth positioning plates from bulging and deforming, thereby improving the welding quality of the product.

[0041] Example 2:

[0042] See Figure 1-3 The figure shows a positioning device with an internal cavity shape provided by Embodiment 2 of the present invention. This embodiment further improves upon the previous embodiment by providing the following technical solution: The first positioning plate 1 has locking blocks 9 at both ends, and the third positioning plate 3 and the fourth positioning plate 4 each have locking slots 10. The locking blocks 9 are inserted into the locking slots 10. The first positioning plate 1 and the second positioning plate 2 have the same structure. The first and second positioning plates are detachably connected by locking blocks that engage with the corresponding locking slots on the third and fourth positioning plates, making assembly and disassembly convenient and facilitating storage when not in use.

[0043] Example 3:

[0044] See Figure 1-3The figure shows a positioning device with an internal cavity shape provided by Embodiment 3 of the present invention. This embodiment further improves upon the above embodiments by providing the following technical solution: Both the first elastic member 6 and the second elastic member 7 are provided with a first through hole 11, the size of which is adapted to the size of the locking block 9. Through the provision of the first and second elastic members, during the use of this device, the first, second, third, and fourth positioning plates are prone to expansion and deformation due to heat. The first and second elastic members provide space for deformation, preventing the first and second positioning plates from expanding apart from the third and fourth positioning plates, thus maintaining the overall shape. Specifically, the first elastic member 6 and the second elastic member 7 are both elastic rubber gaskets.

[0045] Example 4:

[0046] See Figure 1-3 The figure shows a positioning device with an internal cavity shape provided by Embodiment 4 of the present invention. This embodiment further improves upon the above embodiments by providing the following technical solutions: The first positioning plate 1 is a rectangular plate, and a second through hole 12 is provided on the first positioning plate 1. The third positioning plate 3 and the fourth positioning plate 4 are respectively provided with third through holes 14. The second and third through holes can serve as thermal expansion notches, allowing the plate to undergo slight deformation when heated, thereby reducing thermal stress caused by restricted thermal expansion.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A positioning device having an internal cavity shape, characterized in that... It includes: a first positioning plate, a second positioning plate, a third positioning plate, and a fourth positioning plate. The two ends of the first positioning plate are respectively connected to the third positioning plate and the fourth positioning plate. The two ends of the second positioning plate are respectively connected to the third positioning plate and the fourth positioning plate. The second positioning plate is disposed on one side of the first positioning plate. A cavity is provided in the area enclosed by the first positioning plate, the second positioning plate, the third positioning plate, and the fourth positioning plate. The cavity has a structure that is wider at the top and narrower at the bottom. A first elastic element is provided between the first positioning plate and the third positioning plate and the fourth positioning plate. A second elastic element is provided between the second positioning plate and the third positioning plate and the fourth positioning plate. Multiple positioning holes are provided on the first positioning plate, the second positioning plate, the third positioning plate, and the fourth positioning plate.

2. A positioning device with an inner cavity shape according to claim 1, characterized in that... The third positioning plate and the fourth positioning plate are detachably connected to the first positioning plate, and the third positioning plate and the fourth positioning plate are detachably connected to the second positioning plate.

3. A positioning device with an internal cavity shape according to claim 2, characterized in that... The first positioning plate has locking blocks at both ends, and the third and fourth positioning plates are provided with slots. The locking blocks are inserted into the slots. The first positioning plate and the second positioning plate have the same structure.

4. A positioning device with an internal cavity shape according to claim 3, characterized in that... Both the first elastic element and the second elastic element are provided with a first through hole, the size of which is adapted to the size of the card block.

5. A positioning device with an internal cavity shape according to claim 1, characterized in that... The first positioning plate is a rectangular plate, and a second through hole is provided on the first positioning plate.

6. A positioning device with an internal cavity shape according to claim 1, characterized in that... Both the third positioning plate and the fourth positioning plate are provided with handles.

7. A positioning device with an internal cavity shape according to claim 1, characterized in that... The third positioning plate and the fourth positioning plate are respectively provided with a third through hole.

8. A positioning device with an internal cavity shape according to claim 1, characterized in that... Both the first elastic element and the second elastic element are elastic rubber pads.

9. A positioning device with an internal cavity shape according to claim 1, characterized in that... A fifth positioning plate is provided between the third positioning plate and the fourth positioning plate, and the fifth positioning plate abuts against the side of the first positioning plate.

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