Thermal forming tool for curing tubular beam

Abstract

The utility model relates to the field of tubular beam bending, in particular to a curing tubular beam thermal forming tool which comprises a male die and a female die, a shaping supporting unit is arranged between the male die and the female die and comprises a flexible inhaul cable and a plurality of shaping blocks, the flexible inhaul cable sequentially penetrates through the shaping blocks, the cross section of the outer wall of each shaping block in the radial direction is round, and the outer wall of each shaping block is provided with a plurality of grooves. A gap is formed between every two adjacent shaping blocks; and the shaping block can be fixed with the flexible inhaul cable. According to the thermal forming tool for the solidified tubular beam, the problem that the tubular beam is concaved inwards when being bent is solved.

Description

Technical Field

[0001] The utility model relates to the field of pipe beam bending, and particularly relates to a hot forming tooling for curing pipe beams. Background Technique

[0002] Based on the requirements of vehicle lightweighting, some beams on vehicles usually adopt a tubular structure, namely pipe beams. Pipe beams usually have arc parts, and the straight pipes need to be processed through a bending process during processing. Currently, the conventional bending tooling is generally as shown in a bending tooling disclosed in the application number CN202122399241.6, which includes a female die, a male die, a baffle, a push plate and a wedge block; a pressing groove is formed through the top surface of the female die along the length direction; the male die is movably arranged above the pressing groove; the bottom surface of the male die is arranged to match the pressing groove, and the workpiece is bent and deformed by the cooperation of the male die and the pressing groove during processing.

[0003] However, when the straight pipe to be processed is bent, the arc part is prone to concave inward. If the degree of concave inward is too large, the accuracy of the arc part of the bent pipe beam will not meet the consistency requirements and become unqualified products. At this time, the unqualified products need to be repaired, which will undoubtedly reduce the forming efficiency of the pipe beam and increase the processing cost.

[0004] Currently, although there is a patent for a pipe bending device as shown in CN111283028A, an internal fixture is provided, and a plurality of soft blocks are arranged on the internal fixture. When bending, the internal fixture is placed into the pipe, and the soft blocks support the pipe from the inside of the pipe. However, the structure of the above internal fixture is complex and the manufacturing cost is high. Moreover, when the current male die and female die are used to form the pipe beam, due to the obstruction of the side wall of the die, the above internal fixture is difficult to be placed into the female die because it needs to be used in cooperation with the motor rod, so it is difficult to use. Content of the Utility Model

[0005] The utility model aims to provide a hot forming tooling for curing pipe beams to solve the problem of concave inward during pipe beam bending.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a hot forming tooling for curing pipe beams, including a male die and a female die, a shaping and supporting unit is arranged between the male die and the female die, the shaping and supporting unit includes a flexible cable and a plurality of shaping blocks, the flexible cable sequentially penetrates through the plurality of shaping blocks, the cross-section of the outer wall of the shaping block along the radial direction is circular, and a gap is arranged between adjacent shaping blocks; the shaping block can be fixed to the flexible cable.

[0007] The beneficial effects of this scheme are as follows:

[0008] 1. The outer diameter of the sizing block in this solution is slightly smaller than the inner diameter of the straight pipe to be processed, so that the sizing support unit can slide relative to the straight pipe after being placed in the straight pipe, and when the straight pipe is bent, space is reserved for the rotation of the sizing block. During the bending process, the sizing support unit is located inside the straight pipe to support the straight pipe, thus preventing the straight pipe from having excessive internal concavity. At the same time, several sizing blocks at the arc position formed after the straight pipe is bent rotate by a certain angle to jointly support this arc part, so the arc part will not have excessive internal concavity either, effectively improving the product qualification rate and the forming efficiency of the pipe beam.

[0009] 2. There is a gap between adjacent sizing blocks in this solution, and any sizing block can rotate by a certain angle without being blocked by adjacent sizing blocks. Therefore, the sizing support unit in this solution is still a flexible structure and can slide out of the formed pipe beam after the pipe beam is formed.

[0010] Furthermore, several positioning members are provided on the flexible cable, and the positioning members correspond to the sizing blocks one by one and are used to position the sizing blocks.

[0011] Furthermore, the positioning member includes two positioning blocks, both of which are detachably connected to the flexible cable, and the two positioning blocks are respectively located on both sides of the sizing block.

[0012] The beneficial effect of this solution is that since the positioning member is exposed outside the sizing block, when it is necessary to move the sizing block, the positioning member can be removed from the flexible cable, making the adjustment more convenient.

[0013] Furthermore, the positioning member is sleeve-shaped and sleeved on the flexible cable.

[0014] The beneficial effect of this solution is that when the diameter of the flexible cable is small, the positioning member in this solution can be better installed on the flexible cable and will not damage the flexible cable.

[0015] Furthermore, the positioning member is a flexible sleeve that can be bent and deformed, and the positioning member and the sizing block are distributed at intervals. The two ends of the positioning member respectively abut against the ends of two adjacent sizing blocks.

[0016] The beneficial effect of this solution is that when the flexible cable is bent, the flexible sleeve in this solution can be bent synchronously, facilitating bending and removal from the formed pipe beam.

[0017] Furthermore, the positioning member is located between the sizing block and the flexible cable.

[0018] The beneficial effect of this solution is that when the sizing block rotates by a large angle, the positioning member in this solution will not affect the rotation of the sizing block.

[0019] Furthermore, the sizing block is welded to the flexible cable.

[0020] The beneficial effects of this solution are as follows: The shaping block in this solution is easy to install and has a low installation cost.

[0021] Furthermore, the length of the shaping block is 8 - 10 mm.

[0022] The beneficial effects of this solution are as follows: The shaping block in this solution has a small length and can be bent better when supporting the arc part.

[0023] Furthermore, the gap between adjacent shaping blocks is greater than or equal to 5 - 10 mm.

[0024] The beneficial effects of this solution are as follows: While having a good supporting effect on the branch pipe, it ensures that the shaping block at the arc position can rotate.

[0025] Furthermore, the end of the flexible cable penetrates through the outermost shaping block and extends to the side of the outermost shaping block away from the adjacent shaping block.

[0026] The beneficial effects of this solution are as follows: When it is necessary to take out the shaping support unit, pulling the end of the flexible cable can quickly pull out the shaping support unit from the pipe beam, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of Embodiment 1 of the present utility model;

[0028] Figure 2 is Figure 1 an enlarged view of part A in

[0029] Figure 3 is a schematic diagram of the arc position during the processing of the pipe beam in Embodiment 1 of the present utility model;

[0030] Figure 4 is a partial cross-sectional view of the shaping support unit in Embodiment 2 of the present utility model;

[0031] Figure 5 is another implementation manner of the shaping unit in Embodiment 2 of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following is a further detailed description through specific embodiments:

[0033] The reference signs in the accompanying drawings of the specification include: female die 1, pressure groove 11, male die 2, heating module 3, pipe beam 4, flexible cable 5, U-shaped block 51, flexible sleeve 52, shaping block 6.

[0034] Embodiment 1

[0035] Embodiment 1 is basically as Figure 1 , Figure 2 and Figure 3As shown in the figure, a curing pipe beam hot forming tooling includes a punch 2, a die 1 and a shaping support unit. There is a pressing groove 11 with an upward opening on the die 1. The punch 2 is located above the die 1, and a protruding part matching the pressing groove 11 is provided at the bottom of the punch 2. The branch pipe is bent into a pipe beam 4 with an arc part through the cooperation of the punch 2 and the die 1. Heating modules 3 are provided at the bottom of the die 1 and the top of the punch 2. Specifically, in this embodiment, the heating module 3 uses electric heating tubes, and the branch pipe to be bent is heated by the heating module 3 during bending.

[0036] The shaping support unit includes a flexible cable 5 and several shaping blocks 6. Specifically, the flexible cable 5 uses a steel wire rope, and the shaping blocks 6 are cylinders. The flexible cable 5 sequentially passes through several shaping blocks 6. The end of the flexible cable 5 passes through the outermost shaping block 6 and extends to the outside of this shaping block 6. The flexible cable 5 is coaxially arranged with all the shaping blocks 6, and there is a gap between adjacent shaping blocks 6. The diameter of the shaping block 6 and the width of the gap between adjacent shaping blocks 6 in this embodiment are determined according to the inner diameter of the straight pipe to be processed and the bending angle of the arc part of the processed pipe beam 4: the diameter of the shaping block 6 is smaller than the inner diameter of the straight pipe, and it is ensured that the shaping support unit can pass through the qualified pipe beam 4 after bending. The length of the shaping block 6 in this embodiment is 8 mm, the outer diameter of the shaping block 6 is 2 mm smaller than the inner diameter of the straight pipe to be bent, and the width of the gap between adjacent shaping blocks 6 is 5 mm.

[0037] In actual implementation, the shaping support unit can also be divided into a straight part corresponding to the straight section of the pipe beam and an arc part corresponding to the arc section of the pipe beam. Among them, the width of the gap between adjacent shaping blocks 6 in the straight part is 5 mm, and the width of the gap between adjacent shaping blocks 6 in the arc part is 10 mm. By increasing the width of the gap between adjacent shaping blocks 6 in the arc part, it is ensured that the arc part can be smoothly bent when the bending angle of the arc part of the pipe beam is relatively large.

[0038] Secondly, the shaping block 6 can be directly welded and fixed to the flexible cable 5, but in this embodiment, several positioning parts are provided on the flexible cable 5. The positioning part includes two positioning blocks. The two positioning blocks are respectively located on both sides of the shaping block 6, and each positioning block includes two U-shaped parts. The two U-shaped parts are respectively located on both sides of the flexible cable 5 and are fixed by bolts.

[0039] The specific implementation process is as follows:

[0040] When processing the straight pipe, start the heating module 3, then place the shaping and supporting unit into the straight pipe to be bent, and then place the straight pipe into the groove 11. When bending, the punch 2 moves downward to cooperate with the groove, so that the straight pipe is bent into a pipe beam 4 with an arc shape. After bending, slide the punch 2 upward, take out the pipe beam 4 from the groove, and finally pull out the shaping and supporting unit from the pipe beam 4. During this process, the straight pipe to be bent is heated by the heating module 3. When the punch 2 cooperates with the die 1, the shaping block 6 is located inside the straight pipe to support the side wall of the straight pipe, so that the side wall of the straight pipe will not generate excessive inward depression. When the shaping block 6 located at the arc part of the pipe beam 4 is stressed, it rotates at a certain angle, so that the shaping and supporting unit at this part bends synchronously. When the shaping and supporting unit is taken out from the pipe beam 4, the shaping block 6 passing through the arc part rotates and slides out from the end of the pipe beam 4.

[0041] Embodiment 2

[0042] On the basis of Embodiment 1, as Figure 4 shown, the difference from Embodiment 1 is that the positioning member in this embodiment is a flexible sleeve 52 and is sleeved on the flexible cable 5. Specifically, the flexible sleeve 52 is made of rubber material. By clamping the flexible sleeve 52 between the shaping block 6 and the flexible cable 5, the gap between the shaping block 6 and the flexible cable 5 can be tightened, and the shaping block 6 and the flexible cable 5 can be fixed. Please refer to Figure 5 shown. In actual implementation, the flexible sleeve 52 can also be installed between two adjacent shaping blocks 6. At this time, the flexible sleeve 52 is fixed to the flexible cable 5 by friction, and the end of the flexible sleeve 52 positions the shaping block 6. When the flexible cable 5 bends, the flexible cable 5 bends synchronously. In addition, other structures and processing steps in this embodiment are the same as those in Embodiment 1, and will not be described in detail in this embodiment.

[0043] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. A hot forming tooling for solidifying pipe beams, comprising a male die and a female die, characterized in that: A shaping support unit is provided between the punch and the die. The shaping support unit includes a flexible cable and a number of shaping blocks. The flexible cable sequentially penetrates through the number of shaping blocks. The cross-section of the outer wall of the shaping block along the radial direction is circular, and there is a gap between adjacent shaping blocks; the shaping block can be fixed to the flexible cable.

2. The hot forming tooling for a cured pipe beam according to claim 1, wherein: A number of positioning members are provided on the flexible cable. The positioning members correspond to the shaping blocks one by one and are used to position the shaping blocks.

3. The hot forming tooling for a cured pipe beam according to claim 2, wherein: The positioning member includes two positioning blocks. Both of the two positioning blocks are detachably connected to the flexible cable, and the two positioning blocks are respectively located on both sides of the shaping block.

4. A curing pipe beam hot forming tooling according to claim 2, characterized in that: The positioning member is in a sleeve shape and is sleeved on the flexible cable.

5. A hot forming tooling for a cured pipe beam according to claim 4, characterized in that: The positioning member is a flexible sleeve that can be bent and deformed, and the positioning members and the shaping blocks are distributed at intervals. The two ends of the positioning member respectively abut against the ends of two adjacent shaping blocks.

6. The hot forming tooling for a cured pipe beam according to claim 4, wherein: The positioning member is located between the shaping block and the flexible cable.

7. A hot forming tooling for solidifying pipe beams according to claim 1, characterized in that: The shaping block is welded to the flexible cable.

8. The hot forming tooling for curing tubular beams according to claim 1, wherein: The length of the shaping block is 8 - 10 mm.

9. The hot forming tooling for a cured pipe beam according to claim 8, wherein: The gap between adjacent shaping blocks is 5 - 10 mm.

10. A curing pipe beam hot forming tooling according to claim 9, characterized in that: The end of the flexible cable penetrates through the outermost shaping block and extends to the side of the outermost shaping block away from the adjacent shaping block.

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