Pressing die suitable for different frame longitudinal beams

Abstract

The utility model relates to the field of vehicle frame longitudinal beam forming, and particularly discloses a vehicle frame longitudinal beam pressing die. Comprising an upper die unit, a lower die unit and die holders, the adjacent die holders are detachably connected, and U-shaped cavities are formed in the die holders; the upper die unit comprises a cover plate and at least two core dies, and the two core dies are sequentially distributed in the length direction of the U-shaped cavity and detachably connected with the cover plate; the lower die unit comprises at least two first inserts and at least two second inserts, the first inserts and the second inserts are located on the two sides of the core die respectively, all the first inserts are sequentially distributed in the length direction of the U-shaped cavity, all the second inserts are sequentially distributed in the length direction of the U-shaped cavity, and the first inserts and the second inserts are detachably connected with the die base. According to the pressing die suitable for the different frame longitudinal beams, the die development cost can be reduced, and the development period can be shortened.

Description

Technical Field

[0001] The utility model relates to the field of vehicle frame longitudinal beam forming, in particular to a vehicle frame longitudinal beam pressing die. Background Art

[0002] The frame is the base of the entire vehicle. Most of the components and assemblies on the vehicle, such as the engine, transmission system, suspension, steering, cab, cargo box and related control mechanisms, are fixed in place by the frame. The function of the frame is to support and connect the various parts of the vehicle and bear various loads from inside and outside the vehicle. In particular, the commercial vehicle frame is the basis for the commercial vehicle to carry loads. The frame needs to be designed with different widths, lengths and belly heights according to the vehicle design load to carry the load.

[0003] However, the frame of commercial vehicles is usually long. Although there is a longitudinal beam pressing mold disclosed in the patent with application number CN201720233087.6, which is shown in that a first die base, a second die base, a punch and a die are provided, the punch is provided on the first die base, the die is provided on the second die base, the die includes a first die segment, a second die segment and a third die segment, the second die segment is provided between the first and third die segments, the first and third die segments are straight segments, the third die segment includes a first bend, a second bend, a first concave portion and a second concave portion, the first and second bends are provided with a protruding portion, the first and second concave portions are provided with a concave portion, and the concave portion is triangular. The above patent divides the pressing mold into multiple die segments along the length direction of the longitudinal beam, which can reduce the length of each part of the mold when developing and manufacturing the mold, thereby reducing a certain degree of manufacturing difficulty. However, in the case of a long frame, the total length of the mold is still large, requiring more materials and a longer time to manufacture, which will undoubtedly increase the cost of mold manufacturing and lead to a longer development cycle. Utility Model Content

[0004] The utility model aims to provide a pressing die suitable for different frame longitudinal beams, so as to reduce the cost of die development and shorten the development cycle.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pressing die suitable for different frame longitudinal beams, comprising an upper die unit, a lower die unit and a die base, adjacent die bases are detachably connected, a U-shaped cavity is arranged in the die base, and each die base is provided with an opening on the side wall facing the adjacent die base, which is used for the U-shaped cavities of adjacent die bases to communicate; the upper die unit comprises a cover plate and at least two core molds, the cover plate is transversely arranged above the die base, the two core molds are sequentially distributed along the length direction of the U-shaped cavity and are detachably connected to the cover plate; the lower die unit comprises at least two first inserts and at least two second inserts, the first inserts and the second inserts are respectively located on both sides of the core mold, and all the first inserts are sequentially distributed along the length direction of the U-shaped cavity, all the second inserts are sequentially distributed along the length direction of the U-shaped cavity, and the first inserts and the second inserts are detachably connected to the die base;

[0006] A cavity is jointly formed between the first insert block and the core mold and between the second insert block and the core mold, and the width of the U-shaped cavity is greater than the sum of the widths of the first insert block, the second insert block, the core mold, and the cavity.

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

[0008] 1. All the first insert blocks, second insert blocks, and core molds in this solution press and form the vehicle frame longitudinal beam, and the length of the longitudinal beam can be changed by the number of the installed first insert blocks, second insert blocks, and core molds; adjusting the first insert block and the second insert block along the width of the U-shaped cavity can change the width of the cavity, so that longitudinal beams with different spans can be pressed. That is, after determining the parameters of the longitudinal beam, select the appropriate number of first insert blocks, second insert blocks, and core molds according to the parameters for assembly to obtain molds for pressing different lengths and widths, and there is no need to manufacture new molds, effectively shortening the development cycle. The repeated use of structures such as the first insert block, the second insert block, and the core mold can also reduce the cost of mold development.

[0009] 2. Even if the shape and size of a certain part of the longitudinal beam are too different from the shape and size of the cavity formed by the existing first insert block, second insert block, and core mold and cannot be assembled with the existing first insert block, second insert block, and core mold, only the first insert block, second insert block, and core mold corresponding to this different part need to be remanufactured, and the existing first insert block, second insert block, and core mold can still be used for the assembly of other parts. Compared with remanufacturing the entire mold, locally manufacturing a certain part can also reduce the cost of mold development.

[0010] 3. The first insert block, second insert block, and core mold in this solution are all located in the U-shaped cavity. At this time, the mold base can position the first insert block, second insert block, and core mold to prevent the first insert block, second insert block, and core mold from shifting during the pressing process of the longitudinal beam, improving the qualification rate of the longitudinal beam.

[0011] Furthermore, the lower die unit further includes a backing plate, the backing plate is located below the core mold, and two opposite side walls of the backing plate are respectively abutted against the first insert block and the second insert block.

[0012] The beneficial effects of this solution are as follows: The backing plate in this solution forms the bottom side wall of the cavity. Even if the distance adjusted by the first insert block and the second insert block is too large, resulting in the mounting holes on the mold base for installing the first insert block and the second insert block being between the first insert block and the second insert block, the backing plate in this solution can block the mounting holes to ensure that the longitudinal beam can be pressed.

[0013] Furthermore, there are at least two backing plates, and all the backing plates are sequentially distributed along the length direction of the U-shaped cavity.

[0014] The beneficial effects of this solution are as follows: Different lengths of cavities can be formed by installing different numbers of backing plates.

[0015] Furthermore, the backing plate is detachably connected to the die holder.

[0016] The beneficial effect of this solution is that this solution further avoids the displacement of the backing plate.

[0017] Furthermore, a lower reinforcement plate is provided at the connection position of adjacent die holders, and the lower reinforcement plate is detachably connected to the adjacent two die holders at the same time.

[0018] The beneficial effect of this solution is that the reinforcement plate can improve the connection strength between the two die holders, avoid relative displacement of adjacent die holders during the pressing process, thereby avoiding the displacement of the first insert block and the second insert block, and avoiding defective products of the longitudinal beam due to the change of the cavity shape.

[0019] Furthermore, at least two cover plates are provided on the upper die unit, and an upper reinforcement plate is provided at the connection position of the two cover plates, and the upper reinforcement plate is detachably connected to the adjacent two cover plates at the same time.

[0020] The beneficial effect of this solution is that the longer core mold can be connected by installing different numbers of cover plates, and the upper reinforcement plate can further improve the connection strength between adjacent two cover plates.

[0021] Furthermore, a groove for accommodating the upper reinforcement plate is provided on the cover plate.

[0022] The beneficial effect of this solution is that after the upper reinforcement plate is located in the groove, it will not bulge upward and will not interfere with structures such as hydraulic equipment above the cover plate. At the same time, it is convenient to quickly determine the installation position of the upper reinforcement plate.

[0023] Furthermore, the cover plate includes a plate body and a pressing block, the pressing block is detachably connected to the plate body, the core mold is detachably connected to the pressing block, and the length of the plate body is a non-integer multiple of the length of the pressing block.

[0024] The beneficial effect of this solution is that the pressing block in this solution can better fix the core mold. Secondly, the connection positions of adjacent plate bodies and the connection positions of adjacent pressing blocks are distributed in a staggered manner, so that the plate body can be better connected to the pressing block. And because the pressing block opposite to the connection positions of adjacent two plate bodies is connected to the adjacent two plate bodies at the same time, the pressing block can also improve the connection strength between the two plate bodies.

[0025] Furthermore, a positioning groove is provided at the top of the core mold, a positioning rod located in the positioning groove is provided on the pressing block, and the cross sections of the positioning rod and the positioning groove are polygonal.

[0026] The beneficial effect of this solution is that when installing the core mold, the cooperation of the positioning rod and the positioning groove can avoid the displacement of the core mold. And because the cross sections of the positioning groove and the positioning rod are polygonal, even if only one positioning rod is provided, the core mold can be prevented from rotating, and the positioning effect is better. Brief Description of the Drawings

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

[0028] Figure 2 is Figure 1 an exploded view of

[0029] Figure 3 is Figure 2 a top view of the lower die unit and the die base in

[0030] Figure 4 is Figure 2 an exploded view of the lower die unit in Specific embodiments

[0031] The following is a further detailed description through specific embodiments:

[0032] The reference numerals in the accompanying drawings of the specification include: plate body 1, groove 11, upper reinforcement plate 12, die base 2, lower reinforcement plate 21, U-shaped cavity 22, pressing block 3, positioning rod 31, core mold 4, positioning groove 41, vehicle frame longitudinal beam 5, backing plate 6, first insert block 7, and second insert block 8.

[0033] Embodiment

[0034] The embodiment is basically as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown. A pressing die applicable to different vehicle frame longitudinal beams includes an upper die unit, a lower die unit, and two die bases 2. The two die bases 2 are sequentially distributed along the length direction, and the ends of the two die bases 2 close to each other abut against each other. The two die bases 2 are detachably connected. Specifically, protrusions are integrally formed at the connection positions of the two die bases 2, and the protrusions on the same side of the two die bases 2 abut against each other and are connected by bolts; a lower reinforcement plate 21 is provided at the connection position of the two die bases 2, and the lower reinforcement plate 21 is connected to the protrusions of the two die bases 2 by bolts at the same time to improve the connection strength between the two die bases 2. A U-shaped cavity 22 with an upward opening is provided in the die base 2, and openings are provided on the side walls of the two die bases 2 close to each other, and the shape and size of the cross-section of the opening are the same as those of the cross-section of the U-shaped cavity 22, so that the U-shaped cavities 22 of the two die bases 2 are completely communicated.

[0035] The upper die unit includes two cover plates and a plurality of core molds 4. The cover plates include a plate body 1 and two pressing blocks 3. The two plate bodies 1 are sequentially distributed along the length of the U-shaped cavity 22. L-shaped grooves are provided at the tops of the plate bodies 1. The L-shaped grooves are located at one end of the plate body 1 close to the other plate body 1, and the two L-shaped grooves form a groove 11. An upper reinforcement plate 12 is provided in the groove 11. In this embodiment, the left and right ends of the upper reinforcement plate 12 are connected to the two plate bodies 1 by bolts respectively to connect the two plate bodies 1 into a whole.

[0036] In this embodiment, three pressing blocks 3 are used, and the three pressing blocks 3 are sequentially distributed along the length direction of the U-shaped cavity 22. In this embodiment, the length of the plate body 1 is a non-integer multiple of the length of the pressing block 3. Specifically, the length of the plate body 1 is slightly larger than 1.5 times the length of the pressing block 3. It is only necessary to ensure that the connection positions between adjacent pressing blocks 3 are offset from the connection positions between adjacent plate bodies 1. The pressing block 3 is installed at the bottom of the plate body 1 through bolts. Since both ends of the middle pressing block 3 are connected to adjacent two plate bodies 1 at the same time, the middle pressing block 3 can also improve the connection strength between the adjacent two plate bodies 1.

[0037] A plurality of core molds 4 are all located in the U-shaped cavity 22, and the plurality of core molds 4 are sequentially distributed along the length direction of the U-shaped cavity 22. Specifically, the shape of the core mold 4 in this embodiment is determined according to the shape of the vehicle frame longitudinal beam 5. The core mold 4 is connected to the pressing block 3 through bolts. A positioning rod 31 is installed at the bottom of the pressing block 3 through bolts, and a positioning groove 41 for accommodating the positioning rod 31 is provided at the top of the core mold 4. The cross sections of the positioning groove 41 and the positioning rod 31 in this embodiment are both rectangular, so that when the core mold 4 is attached to the pressing block 3, the core mold 4 is positioned by the matching positioning rod 31 and positioning groove 41, and the core mold 4 is prevented from shifting and rotating during the process of connecting the core mold 4 and the pressing block 3.

[0038] The lower die unit is lower than the pressing block 3. The lower die unit includes two backing plates 6, a plurality of first inserts 7 and a plurality of second inserts 8. Specifically, the number of the first inserts 7 and the second inserts 8 used is determined according to the length of the inserts and the length of the vehicle frame longitudinal beam 5. The two backing plates 6 are respectively located in the two U-shaped cavities 22 and extend along the length direction of the U-shaped cavity 22. The length of the backing plate 6 in this embodiment is equal to the length of the U-shaped cavity 22 where it is located, and the backing plate 6 is connected to the die base 2 through bolts. All the first inserts 7 are located on the front side of the backing plate 6, and all the first inserts 7 are sequentially distributed along the length direction of the U-shaped cavity 22; all the second inserts 8 are located on the rear side of the backing plate 6, and all the second inserts 8 are also sequentially distributed along the length direction of the U-shaped cavity 22. In this embodiment, adjacent first inserts 7 are abutted against each other, adjacent second inserts 8 are abutted against each other, and the side walls of the first inserts 7 and the second inserts 8 facing the backing plate 6 are abutted against the backing plate 6. All the first inserts 7 and the second inserts 8 are connected to the die base 2 through bolts. The core mold 4 is located between the first inserts 7 and the second inserts 8. At this time, a cavity is formed among the first inserts 7, the second inserts 8, the backing plate 6 and the core mold 4.

[0039] In this embodiment, the width of the U-shaped groove is greater than the sum of the thicknesses of the first insert block 7, the second insert block 8, and the width of the backing plate 6. Therefore, when it is necessary to press a frame longitudinal beam 5 with a larger width, a backing plate 6 with a larger width is used, the first insert block 7 and the second insert block 8 connected to the die base 2 are removed, and the first insert block 7 and the second insert block 8 are moved towards the side walls of the U-shaped groove, so that the reinstalled first insert block 7 and second insert block 8 can abut against the backing plate 6 with a larger width, thereby forming a cavity with a larger width for pressing the frame longitudinal beam 5 with a larger width.

[0040] The specific implementation process is as follows:

[0041] When pressing the frame longitudinal beam 5, the raw material is placed above the cavity. After the core die 4, the pressing block 3, and the plate body 1 move downward, the core die 4 presses the raw material into shape. During the development of the frame, after determining the parameters such as the shape, size, and width of the frame longitudinal beam 5, according to the shape, length, and width of each part of the longitudinal beam, a core die 4 with a suitable shape and length and a backing plate 6 with a suitable width are selected. At the same time, a suitable number of backing plates 6, first insert blocks 7, and second insert blocks 8 are selected to ensure that the backing plate 6, the first insert block 7, the second insert block 8, and the core die 4 can form a cavity that meets the shape, length, and width requirements of the frame longitudinal beam 5, without the need to remanufacture the entire pressing die.

[0042] In actual implementation, if the length of the longitudinal beam is greater than the length of two U-shaped cavities, one or more third die bases 2 can be provided between the current two die bases 2. The connection method between adjacent two die bases 2 is the same. Openings with cross-sections exactly the same as the cross-section of the U-shaped cavity 22 are provided at both the left and right ends of the third die base 2, so that the U-shaped cavities 22 in the three die bases 2 form a cavity with a larger length. At the same time, more plate bodies 1 and pressing blocks 3 are selected to install a longer core die 4, so that a frame longitudinal beam 5 with a larger length can be pressed.

[0043] When it is difficult to assemble the shape, length, and width of a certain part of the frame cross beam by using the existing core die 4, the core die 4 corresponding to this part can be manufactured separately, without the need to remanufacture the entire die, effectively reducing costs and improving production efficiency.

[0044] The above are only the embodiments of the present invention. Common general technical solutions and / or characteristics in the solutions are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solutions of the present invention, several deformations and improvements can be made, which 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 subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A pressing die suitable for different frame longitudinal beams, characterized in that: It comprises an upper mold unit, a lower mold unit and a mold base, and adjacent mold bases are detachably connected. A U-shaped cavity is arranged in the mold base, and each mold base is provided with an opening on the side wall facing the adjacent mold base, so as to communicate the U-shaped cavities of adjacent mold bases; the upper mold unit comprises a cover plate and at least two core molds, the cover plate is transversely arranged above the mold base, and the two core molds are sequentially distributed along the length direction of the U-shaped cavity and are detachably connected to the cover plate; the lower mold unit comprises at least two first inserts and at least two second inserts, the first inserts and the second inserts are respectively located on both sides of the core mold, and all the first inserts are sequentially distributed along the length direction of the U-shaped cavity, and all the second inserts are sequentially distributed along the length direction of the U-shaped cavity, and the first inserts and the second inserts are detachably connected to the mold base; A cavity is formed between the first insert and the core mold, and between the second insert and the core mold. The width of the U-shaped cavity is greater than the sum of the width of the first insert, the width of the second insert, the width of the core mold and the width of the cavity.

2. A pressing die suitable for different frame longitudinal beams according to claim 1, characterized in that: The lower mold unit also includes a pad, which is located below the core mold, and two opposite side walls of the pad are respectively against the first insert and the second insert.

3. A pressing die suitable for different frame longitudinal beams according to claim 2, characterized in that: At least two pads are provided, and all the pads are distributed in sequence along the length direction of the U-shaped cavity.

4. A pressing die suitable for different frame longitudinal beams according to claim 2, characterized in that: The backing plate is detachably connected to the mold base.

5. The pressing die suitable for different frame longitudinal beams according to claim 1, characterized in that: A lower reinforcing plate is provided at the connection position of adjacent mold bases, and the lower reinforcing plate is detachably connected to the two adjacent mold bases at the same time.

6. A pressing die suitable for different frame longitudinal beams according to claim 1, characterized in that: The upper mold unit is also provided with at least two cover plates, and an upper reinforcing plate is provided at the connection position of the two cover plates, and the upper reinforcing plate is detachably connected to the two adjacent cover plates at the same time.

7. A pressing die suitable for different frame longitudinal beams according to claim 6, characterized in that: The cover plate is provided with a groove for accommodating the upper reinforcing plate.

8. The pressing die applicable to different frame longitudinal beams according to claim 1, characterized in that: The cover plate comprises a plate body and a pressing block, the pressing block is detachably connected to the plate body, the core mold is detachably connected to the pressing block, and the length of the plate body is a non-integer multiple of the length of the pressing block.

9. A pressing die suitable for different frame longitudinal beams according to claim 8, characterized in that: A positioning groove is arranged on the top of the core mold, and a positioning rod located in the positioning groove is arranged on the pressing block, and the cross sections of the positioning rod and the positioning groove are polygonal.

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