Automobile seat pipe bending flattening die

Abstract

The utility model provides a kind of automobile seat bent pipe flattening die, including lower die base, lower die base is provided with lower die and upper die for placing bent pipe, upper die is embedded with flattening punch, lower die base is provided with lift plate for driving upper die to move up and down, upper die is connected with lift plate by lifting structure, the lower surface of flattening punch is provided with material running groove, the depth of material running groove gradually deepens from both ends to middle, lifting structure includes multiple lifting cylinders and limit posts being arranged below lift plate, connecting assembly for connecting lift plate and upper die is arranged below lift plate;By being provided with material running groove on flattening punch, bent pipe portion can run material into material running groove on flattening punch during flattening, so as to avoid that bent pipe after flattening runs too much material downwards, which causes the recess to be too deep, affects the strength of bent pipe, and can avoid that too much material running in recess causes the assembly of bent pipe after cutting round hole and other accessories to be unqualified, and the number of inferior seats increases.

Description

Technical Field

[0001] This utility model relates to the field of stamping forming technology, and in particular to a flattening mold for bending car seat tubes. Background Technology

[0002] Automotive seat frames (such as backrest beams, seat cushion frames, headrest rods, etc.) typically use bent metal tubing (such as steel pipes or square tubes) as core structural components. To meet strength requirements (such as impact resistance and weight support), lightweight requirements (reducing the overall vehicle weight), and ease of assembly (welding or connecting with other components), specific parts of the bent tubing need to be flattened (locally extruding round / square tubes into a flat shape).

[0003] During the flattening process, because the flattening punch is flat, the material can only flow downwards in the middle area of ​​the bent tube, resulting in an excessively deep groove after flattening. This excessive groove reduces the structural strength, and when the corresponding parts are installed after laser-cutting round holes in the groove, the assembly is substandard, increasing the number of inferior seats and affecting the pass rate. Utility Model Content

[0004] The present invention aims to provide a flattening mold for automotive seat bending tubes, which avoids excessively deep grooves after flattening during the tube flattening process, thereby improving the strength of the flattened tube.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a flattening mold for automotive seat bending tubes, including a lower mold base, on which a lower mold and an upper mold for placing the bending tube are provided, a flattening punch is embedded in the upper mold, a lifting plate for driving the upper mold to move up and down is provided on the lower mold base, the upper mold and the lifting plate are connected by a lifting structure, a material feeding groove is provided on the lower surface of the flattening punch, the depth of the material feeding groove gradually increases from both ends to the middle, the lifting structure includes multiple lifting cylinders and limit pins provided below the lifting plate, and a connecting component for connecting the lifting plate and the upper mold is provided below the lifting plate.

[0006] As a preferred embodiment of the above solution, the lower mold base is provided with a positioning groove for placing the bent pipe.

[0007] More preferably, the connecting assembly includes a first connecting plate and a second connecting plate bolted to the lifting plate, a plurality of guide posts are provided between the first connecting plate and the second connecting plate, and a connecting bolt is also provided between the second connecting plate and the first connecting plate. The flattening punch is embedded in the first connecting plate and the second connecting plate, and its lower end extends out of the upper mold to contact the bending pipe.

[0008] More preferably, the flattening punch has a support lug on its side that is connected to the first connecting plate and the second connecting plate by bolts.

[0009] The beneficial effects of this utility model are as follows: By setting a feeding groove on the flattening punch, the bent tube part can feed into the feeding groove on the flattening punch during the flattening process, thereby avoiding excessive material feeding downwards after flattening, which would cause the groove to be too deep and affect the strength of the bent tube. It can also prevent excessive material feeding into the groove from causing unqualified assembly with other parts after the bent tube is cut into the round hole, which would lead to the breakage of the seat frame. A limiting post is set on the lifting plate to prevent the lifting plate from rising or falling too far, which would affect the flattening of the bent tube. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0011] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0012] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 3 .

[0013] Figure 4 This is a schematic diagram of the material feeding trough in this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figures 1-4 As shown, a flattening mold for a car seat bend tube includes a lower mold base 1, a lower mold 2 for placing the bend tube and an upper mold 3 on the lower mold base 1, a flattening punch 4 embedded in the upper mold 3, a lifting plate 5 for driving the upper mold 3 to move up and down on the lower mold base 1, the upper mold 3 and the lifting plate 5 are connected by a lifting structure, a material feeding groove 14 is provided on the lower surface of the flattening punch 4, the depth of the material feeding groove 14 gradually increases from both ends to the middle, the lifting structure includes multiple lifting cylinders 6 and limit posts 7 arranged below the lifting plate 5, and a connecting component for connecting the lifting plate 5 and the upper mold 3 is arranged below the lifting plate 5.

[0016] There are two lifting cylinders 6, which are set on the left and right sides of the lifting plate 5 to ensure the stability of the lifting plate 5 when it is raised and lowered. Limiting posts 7 are set to limit the displacement distance of the lifting plate 5 to prevent excessive displacement from damaging the upper mold 3, the first connecting plate 9 and the second connecting plate 10.

[0017] The lower die base 1 is provided with a positioning groove 8 for placing the bent pipe. The positioning groove 8 includes a first positioning groove 8 and a second positioning groove 8. The first positioning groove 8 is arranged laterally on the lower die base 1, and the second positioning groove 8 is connected to the lower die base 1 through a connecting plate. It is used to place the bent pipe, thereby preventing the position of the bent pipe from shifting.

[0018] The connecting assembly includes a first connecting plate 9 and a second connecting plate 10 bolted to the lifting plate 5. Multiple guide posts 11 are provided between the first connecting plate 9 and the second connecting plate 10, and connecting bolts 12 are also provided between the second connecting plate 10 and the first connecting plate 9. A flattening punch 4 is embedded within the first connecting plate 9 and the second connecting plate 10, with its lower end extending out of the upper die 3 and contacting the bent pipe. The first connecting plate 9 and the second connecting plate 10 are connected by multiple guide posts 11 and connecting bolts 12, improving stability during the lifting process and preventing the flattening punch 4 from shifting.

[0019] The flattening punch 4 has a support lug 13 on its side, which is connected to the first connecting plate 9 and the second connecting plate 10 by bolts. The flattening punch 4 is embedded in the first connecting plate 9, the second connecting plate 10 and the upper mold 3, and is connected to the first connecting plate 9 and the second connecting plate 10 by the support lug 13, so as to ensure the stability of the flattening punch 4 during the bending and flattening process.

[0020] By setting a feeding groove 14 on the flattening punch 4, the bent tube can feed into the feeding groove 14 on the flattening punch 4 during the flattening process. This avoids excessive material feeding downwards after flattening, which would cause the groove to become too deep and affect the strength of the bent tube. It also avoids excessive material feeding into the groove, which could lead to poor assembly of the bent tube with other parts after the round hole is cut, causing the seat frame to break. A limiting post 7 is set on the lifting plate 5 to prevent the lifting plate 5 from rising or falling too far, which would affect the flattening of the bent tube.

[0021] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A flattening mold for automotive seat bending tubes, comprising a lower mold base (1), characterized in that: The lower die base (1) is provided with a lower die (2) and an upper die (3) for placing the bent pipe. The upper die (3) is fitted with a flattening punch (4). The lower die base (1) is provided with a lifting plate (5) for driving the upper die (3) to move up and down. The upper die (3) and the lifting plate (5) are connected by a lifting structure. The lower surface of the flattening punch (4) is provided with a feeding groove (14). The depth of the feeding groove (14) gradually increases from both ends to the middle. The lifting structure includes multiple lifting cylinders (6) and limit posts (7) provided below the lifting plate (5). A connecting component for connecting the lifting plate (5) and the upper die (3) is provided below the lifting plate (5).

2. The automobile seat bending tube flattening mold according to claim 1, characterized in that: The lower mold base (1) is provided with a positioning groove (8) for placing the bent pipe.

3. The automobile seat bending tube flattening mold according to claim 1, characterized in that: The connecting assembly includes a first connecting plate (9) and a second connecting plate (10) bolted to the lifting plate (5). A plurality of guide posts (11) are provided between the first connecting plate (9) and the second connecting plate (10). A connecting bolt (12) is also provided between the second connecting plate (10) and the first connecting plate (9). The flattening punch (4) is embedded in the first connecting plate (9) and the second connecting plate (10), and its lower end extends out of the upper mold (3) and contacts the bent pipe.

4. The automobile seat bending tube flattening mold according to claim 3, characterized in that: The flattening punch (4) has a support lug (13) on its side that is connected to the first connecting plate (9) and the second connecting plate (10) by bolts.

Images