A drawing die for the upper part of an automobile rail

Abstract

The utility model discloses a kind of drawing die for the upper part of automobile longitudinal beam, including die body, the die body is composed of upper die assembly and lower die assembly, the upper die assembly is set on the lower die assembly, insert block assembly is installed between the upper die assembly and the lower die assembly;The insert block assembly adopts combined structure, including the upper die insert block of installation in the bottom of the upper die assembly and the lower die insert block of installation in the top of the lower die assembly, the upper die insert block is matched with the lower die insert block;The structure of the upper die insert block and the lower die insert block is same, and it includes symmetrical two side edges and a connecting edge, two the side edge is connected by the connecting edge.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, and in particular to a drawing die for the upper part of automobile longitudinal beams. Background Technology

[0002] Drawing dies are the most critical and important process equipment in the stamping production of automotive body panels. Their function is to shape flat blanks into workpieces with stable three-dimensional spatial shapes through plastic deformation. As a key structural component of the car body frame, the upper part of the automotive longitudinal beam is usually complex and often uses high-strength steel plates, which puts higher demands on the drawing dies.

[0003] Currently, most drawing dies for the upper part of longitudinal beams adopt an integral structure. The die base is usually made of cast iron, which is a low-cost material. Even after surface flame hardening, its overall hardness is limited. In automated mass production, stamping equipment has a high number of strokes, with a monthly output of tens of thousands of pieces. When dealing with high-strength steel plates and complex-shaped upper parts of longitudinal beams, the sheet metal flows violently in the die blanking surface, drawing beads, and die fillet, generating huge friction and pressure. The wear resistance of integral cast iron dies is insufficient, causing wear and scratches to appear on their working surfaces quickly. Once scratches appear on the die, they will further scratch the workpiece surface, affecting product quality and even causing workpiece necking and cracking. At the same time, the die blanking surface will also fail due to excessive wear, disrupting the precise sheet metal flow control and easily causing defects such as wrinkling or cracking.

[0004] For integral molds, repairing localized wear is extremely difficult. It often requires taking the entire mold off the production line for large-area welding and reprocessing, resulting in long repair cycles and high costs, which seriously affect production efficiency and cost control. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a drawing die for the upper part of the longitudinal beam of an automobile, which can be used for partial replacement of inserts.

[0006] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: a drawing die for the upper part of an automobile longitudinal beam is provided, comprising a die body, wherein the die body is composed of an upper die assembly and a lower die assembly, the upper die assembly is disposed on the lower die assembly, and an insert assembly is installed between the upper die assembly and the lower die assembly; The insert assembly adopts a combined structure, including an upper mold insert installed at the bottom of the upper mold assembly and a lower mold insert installed at the top of the lower mold assembly, wherein the upper mold insert and the lower mold insert cooperate with each other; The upper mold insert and the lower mold insert have the same structure, both including two symmetrical sides and a connecting edge, and the two sides are connected by the connecting edge.

[0007] In a preferred embodiment of this utility model, both the side edge and the connecting edge are composed of several inserts, and the inserts are connected to the mold body by bolts.

[0008] In a preferred embodiment of the present invention, the upper mold assembly includes an upper mold base and an upper template, the upper template is installed at the bottom of the upper mold base, and the upper mold insert surrounds the upper template.

[0009] In a preferred embodiment of the present invention, the lower mold assembly includes a lower mold base, a pad, and a lower template. The lower template and the pad are both installed on the top of the lower mold base. The pad has an inner hole that mates with the lower template. The lower mold insert is installed on the pad and surrounds the lower template.

[0010] In a preferred embodiment of this utility model, a buffer plate is installed at the bottom of the lower mold base, and the buffer plate is connected to the pad plate through a plurality of buffer pillars, the plurality of buffer pillars passing through the lower mold base.

[0011] In a preferred embodiment of this utility model, the pad is provided with U-shaped blocks on both sides, the top opening of the U-shaped blocks cooperates with the guide blocks on both sides of the upper mold base, and the bottom of the U-shaped blocks cooperates with the guide grooves on both sides of the lower mold base.

[0012] The beneficial effects of this utility model are: This utility model provides a drawing die for the upper part of the longitudinal beam of an automobile. The drawing die adopts a combined structure, which enables partial replacement of inserts, greatly reducing the maintenance cycle and maintenance cost, thereby ensuring production efficiency. Attached Figure Description

[0013] Figure 1 This is a perspective view of a drawing die used on the upper part of a car longitudinal beam.

[0014] Figure 2 This is an exploded view of a drawing die used for the upper part of a car longitudinal beam.

[0015] Figure 3 This is a perspective view of the upper die insert in a drawing die used on the upper part of an automobile longitudinal beam.

[0016] Figure 4 This is a perspective view of a lower die insert in a drawing die used for the upper part of an automobile longitudinal beam.

[0017] The components in the attached diagram are labeled as follows: 1. Upper mold base; 2. Upper mold insert; 3. Lower mold plate; 4. Lower mold insert; 5. Pad plate; 6. Lower mold base; 7. Buffer plate; 8. Buffer column; 9. U-shaped block; 10. Guide block; 11. Guide groove; 12. Insert. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0019] according to Figures 1 to 4 A drawing die for the upper part of an automotive longitudinal beam includes a die body, which is composed of an upper die assembly and a lower die assembly. The upper die assembly is disposed on the lower die assembly, and an insert assembly is installed between the upper die assembly and the lower die assembly. The insert assembly adopts a combined structure, including an upper die insert 2 installed at the bottom of the upper die assembly and a lower die insert 4 installed at the top of the lower die assembly. The upper die insert 2 and the lower die insert 4 cooperate to enable partial replacement of the insert 12, which greatly reduces the maintenance cycle and maintenance cost, thereby ensuring production efficiency.

[0020] The upper mold insert 2 and the lower mold insert 4 have the same structure, both including symmetrical two sides and a connecting edge. The two sides are connected by the connecting edge to form an opening. The opening provides space for the insert to deform elastically. During the pressing process, the insert can slightly contract under the action of external force, so as to smoothly enter the mounting hole. After reaching the position, it relies on its elasticity to open and form a tight fit with the hole wall to achieve firm fixation. When disassembling, lubricating oil can be injected from this opening or a special tool can be used to make it contract, making it easy to eject.

[0021] Both the side and the connecting edge are composed of several inserts 12. The inserts 12 are connected to the mold body by bolts. The inserts 12 are made of high-hardness material, which greatly improves the wear resistance and anti-burring ability, greatly extends the overall life of the mold, and can adapt to higher-intensity production rhythms.

[0022] When the insert 12 wears down to the point of affecting product quality, there is no need to shut down the entire mold for repair; only the corresponding insert 12 needs to be replaced. This greatly shortens the repair time, reduces production downtime losses, and lowers long-term maintenance costs.

[0023] The upper mold assembly includes an upper mold base 1 and an upper template. The upper template is installed at the bottom of the upper mold base 1, and the upper mold insert 2 surrounds the upper template.

[0024] The lower mold assembly includes a lower mold base 6, a pad 5, and a lower template 3. The lower template 3 and the pad 5 are both installed on the top of the lower mold base 6. The pad 5 has an inner hole that mates with the lower template 3. The lower mold insert 4 is installed on the pad 5 and surrounds the lower template 3.

[0025] A buffer plate 7 is installed at the bottom of the lower mold base 6. The buffer plate 7 is connected to the pad plate 5 through a number of buffer pillars 8. The buffer pillars 8 penetrate the lower mold base 6. The buffer plate 7, as a transition piece with high hardness and a flat surface, disperses the concentrated force applied by the buffer pillars 8 into a larger and more uniform force distribution, thereby protecting the more expensive lower mold base 6 from damage.

[0026] The pad 5 is provided with U-shaped blocks 9 on both sides. The top opening of the U-shaped block 9 cooperates with the guide blocks 10 on both sides of the upper mold base 1, and the bottom of the U-shaped block 9 cooperates with the guide grooves 11 on both sides of the lower mold base 6. This can provide precise guidance for the upper mold assembly and the lower mold assembly, avoid minor misalignment, and thus play a protective role.

[0027] Compared with the prior art, the present invention provides a drawing die for the upper part of the longitudinal beam of an automobile. The drawing die adopts a combined structure, which enables partial replacement of inserts, greatly reducing the maintenance cycle and maintenance cost, thereby ensuring production efficiency.

[0028] In the description of this utility model, it should be noted that all components are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional test methods. The terms "upper", "lower", "left", "right", "inner" and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A drawing die for the upper part of an automotive longitudinal beam, comprising a die body, the die body being composed of an upper die assembly and a lower die assembly, the upper die assembly being disposed on the lower die assembly, characterized in that: An insert assembly is installed between the upper mold assembly and the lower mold assembly; The insert assembly adopts a combined structure, including an upper mold insert installed at the bottom of the upper mold assembly and a lower mold insert installed at the top of the lower mold assembly, wherein the upper mold insert and the lower mold insert cooperate with each other; The upper mold insert and the lower mold insert have the same structure, both including two symmetrical sides and a connecting edge, and the two sides are connected by the connecting edge.

2. The drawing die for the upper part of an automobile longitudinal beam according to claim 1, characterized in that, Both the side and the connecting edge are composed of several inserts, which are connected to the mold body by bolts.

3. The drawing die for the upper part of an automobile longitudinal beam according to claim 1, characterized in that, The upper mold assembly includes an upper mold base and an upper mold template. The upper mold template is installed at the bottom of the upper mold base, and the upper mold insert surrounds the upper mold template.

4. The drawing die for the upper part of an automobile longitudinal beam according to claim 3, characterized in that, The lower mold assembly includes a lower mold base, a pad, and a lower mold template. The lower mold template and the pad are both installed on the top of the lower mold base. The pad has an inner hole that mates with the lower mold template. The lower mold insert is installed on the pad and surrounds the lower mold template.

5. A drawing die for the upper part of an automobile longitudinal beam according to claim 4, characterized in that, A buffer plate is installed at the bottom of the lower mold base. The buffer plate is connected to the pad plate through a number of buffer pillars, and the number of buffer pillars penetrate the lower mold base.

6. The drawing die for the upper part of an automobile longitudinal beam according to claim 5, characterized in that, The pad is provided with U-shaped blocks on both sides. The top opening of the U-shaped block is matched with the guide blocks on both sides of the upper mold base, and the bottom of the U-shaped block is matched with the guide grooves on both sides of the lower mold base.

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