Blanking die of steel plate for automobile stamping sheet metal part

Abstract

The utility model discloses a steel plate blanking die for automobile stamping sheet metal parts, which comprises a base, an upper die, a lower die and a material supporting frame, the base is fixed on a workbench, the lower die is mounted on the base, the upper die is positioned above the lower die, the material supporting frame is arranged between the upper die and the lower die and is used for supporting a steel plate, the upper die is provided with an upper arc-shaped cutter, and the lower die is provided with a lower arc-shaped cutter. A lower arc cutter is arranged on the lower die, a plurality of elastic supporting mechanisms are arranged on the lower die at intervals, the upper die is installed on the elastic supporting mechanisms, when the elastic supporting mechanisms are in an initial state, the upper die and the lower die are in a die splitting state, and when the upper die is pressed by a press to move downwards by a preset distance, the upper die and the lower die are in a die closing state. A flexible buffering mechanism is arranged on the upper surface of the material supporting frame. The blanking die has the advantages that when the size of a steel plate is changed, the blanking die can be rapidly replaced, the stroke of a press can be shortened, the production takt is improved, and the production efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blanking die, especially an automobile plate blanking die. BACKGROUND

[0002] With the improvement of people's living quality, more and more people prefer to travel by car, and the demand for cars is increasing. People's requirements for cars are also increasing, and the problem of faster and faster car upgrades is increasingly prominent. Reducing manufacturing costs and improving production efficiency have become the survival of many automobile parts manufacturers.

[0003] In the production process of automobile stamping sheet metal parts, the material is cut, drawn, trimmed, shaped, punched and other processes under the action of the die and the machine tool, and finally shaped into various shaped parts. The blanking process is a production process that cuts the coil steel plate into small pieces of the required size, usually using blanking equipment. The existing blanking equipment is usually an automatic device, mainly including a PLC controller, a feeding device, a blanking die and a discharging device. The feeding device inputs the coil steel plate to the preset cutting position of the blanking die in turn, the blanking die cuts the steel plate delivered to the preset cutting position to obtain small pieces of the required size, the feeding device outputs the small pieces of the steel plate to the discharging device, the discharging device delivers the small pieces of the steel plate delivered to it to the stacking place for packaging, and the PLC controller controls the cooperative work of the feeding device, the blanking die and the discharging device.

[0004] The existing blanking die mainly includes a base, an upper die, a lower die and a material supporting frame. The base is fixed on the workbench, the lower die is fixed on the base, the upper die is located above the lower die and is fixed on the press, and the material supporting frame is arranged between the upper die and the lower die to support the steel plate. The upper die has an upper arc-shaped cutter, and the lower die has a lower arc-shaped cutter. When the steel plate is delivered to the preset cutting position of the blanking die, the press drives the upper die to descend, so that the upper arc-shaped cutter and the lower arc-shaped cutter cut the steel plate to obtain the steel plate of the required size.

[0005] In order to ensure the smooth feeding of the feeding device and avoid the steel plate being scratched by the lower arc-shaped cutter during the transmission process, the current material supporting frame is designed to be able to lift, in the initial state, the upper die and the lower die are in the mold opening state, the material supporting frame is flat with the feeding device and the discharging device, the lower arc-shaped cutter is located at the internal gap of the material supporting frame and is lower than the material supporting frame, when the feeding device feeds according to the preset frequency under the control of the PLC controller, the PLC controller controls the material supporting frame to descend by a preset distance every time the feeding device feeds once, so that the lower arc-shaped cutter stretches from the internal gap of the material supporting frame to above the material supporting frame, every time the steel plate is sent to the preset cutting position in the blanking die, the PLC controller controls the press to drive the upper die to descend by a preset distance and close with the lower die, at this time, the upper die and the lower die are in the mold closing state, the steel plate is pressed downward, the upper arc-shaped cutter and the lower arc-shaped cutter cut the steel plate upward and downward to obtain small steel plates, at this time, the PLC controller controls the press to drive the upper die to ascend by a preset distance and separate from the lower die, then controls the material supporting frame to ascend by a preset distance so that the upper steel plate is separated from the lower arc-shaped cutter, and then controls the feeding device to convey the small steel plates to the discharging device to complete a blanking, and the cycle is repeated.

[0006] However, the existing blanking die has the following problems: 1. Since the size of the steel plate to be cut is not necessarily, and the blanking die is only for a certain size of steel plate, when the size of the steel plate is changed, the blanking die also needs to be replaced, but on the one hand, since the upper die is installed on the press, the technical requirements for the disassembly and assembly personnel are high, and it is difficult to complete the timely replacement of the blanking die; 2. Since the moving space of the material supporting frame needs to be reserved between the upper die and the lower die, the stroke of the press is long, the production rhythm is slow, and the efficiency is low. SUMMARY

[0007] The technical problem to be solved by the utility model is to provide a blanking die for steel plates of automobile stamping sheet metal parts, which can quickly complete the replacement of the blanking die when the size of the steel plate is changed, shorten the stroke of the press, improve the production rhythm, and has high production efficiency.

[0008] The utility model adopts the technical scheme that a blanking die for steel plates of automobile stamping sheet metal parts, including base, upper die, lower die and material supporting frame, the base is fixed on the workbench, the lower die is installed in the base, the upper die is located above the lower die, the material supporting frame is arranged between the upper die and the lower die and is used for supporting the steel plate, the upper die is provided with an upper arc-shaped cutter, the lower die is provided with a lower arc-shaped cutter, a plurality of elastic supporting mechanisms are arranged on the lower die at intervals, the upper die is installed on the plurality of elastic supporting mechanisms, when the elastic supporting mechanisms are in the initial state, the upper die and the lower die are in the mold opening state, when the upper die is downwardly moved by a preset distance under the press, the upper die and the lower die are in the mold closing state, and the upper surface of the material supporting frame is provided with a flexible buffer mechanism.

[0009] Compared with the prior art, the utility model has the advantages that through setting flexible buffering mechanism on the upper surface of the material supporting frame and setting multiple elastic supporting mechanisms on the lower mould, in the initial state, the upper mould and the lower mould are in the mould opening state, the flexible buffering mechanism is higher than the lower arc-shaped cutter, when the steel plate is conveyed to the blanking die, the steel plate directly contacts with the flexible buffering mechanism and is supported by the flexible buffering mechanism, then the press machine presses the upper mould, in the process of downward movement of the upper mould, the multiple elastic supporting mechanisms are compressed, the flexible buffering mechanism is also pressed and deformed, when the upper mould moves downward to the mould closing state with the lower mould, one time of steel plate cutting is completed, at this time, the press machine moves upward and resets, the multiple elastic supporting mechanisms rebound and reset to drive the upper mould to reset, the flexible buffering mechanism restores to the original state, at this time, the cut steel plate can be sent out, thus, the utility model utilizes the deformation characteristics of the flexible buffering mechanism to realize the contact between the steel plate and the lower arc-shaped cutter during cutting and the separation between the steel plate and the lower arc-shaped cutter during conveying, does not need to control the lifting of the material supporting frame additionally, thereby does not need to reserve the lifting space of the material supporting frame, can shorten the stroke of the press machine, improves the production rhythm and has higher production efficiency, in addition, since the lower mould is installed on the upper mould, the blanking die can be directly removed integrally from the workbench, thereby when the size of the steel plate is replaced, the blanking die can be quickly replaced.

[0010] Further, each elastic supporting mechanism is a nitrogen spring.

[0011] Further, the flexible buffering mechanism comprises multiple tufts of bristles distributed on the upper surface of the material supporting frame.

[0012] Further, multiple positioning pins are arranged on the base, and the lower mould bottom is provided with multiple positioning grooves matched with the multiple positioning pins one by one.

[0013] Further, a guiding mechanism for guiding the steel plate to enter between the upper mould and the lower mould is further installed on the base, and the guiding mechanism is also provided with flexible buffering mechanism.

[0014] Further, the guiding mechanism can adjust the guiding width to be suitable for guiding steel plates of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the blanking die for the steel plate of the automobile stamping sheet metal part of the utility model;

[0016] Figure 2 It is an exploded view of the blanking die for the steel plate of the automobile stamping sheet metal part of the utility model;

[0017] Figure 3 It is a partial perspective view of the blanking die for the steel plate of the automobile stamping sheet metal part of the utility model;

[0018] Figure 4 Figure 1 is a perspective view of the lower die of the blanking die for the automobile stamping sheet metal part steel plate of the utility model. DETAILED DESCRIPTION

[0019] The utility model will be described in further detail below in combination with the embodiment of the drawings.

[0020] Embodiment one: as shown in Figure 1 and Figure 2 A kind of blanking die for the automobile stamping sheet metal part steel plate, including pedestal 1, upper die 2, lower die 3 and material supporting frame 4, pedestal 1 is fixed on workbench, lower die 3 is installed in pedestal 1, upper die 2 is located above lower die 3, material supporting frame 4 is arranged between upper die 2 and lower die 3, for supporting steel plate, upper die 2 has upper arc-shaped cutter, lower die 3 has lower arc-shaped cutter 7, lower die 3 is spaced apart and is provided with multiple elastic support mechanisms 5, upper die 2 is installed on multiple elastic support mechanisms 5, when elastic support mechanism 5 is in initial state, upper die 2 and lower die 3 are in mold opening state, when upper die 2 is pressed by press and moves downward by pre-set distance, upper die 2 and lower die 3 are in mold closing state, the upper surface of material supporting frame 4 is provided with first flexible buffer mechanism 6.

[0021] In the embodiment, by being provided with first flexible buffer mechanism 6 on the upper surface of material supporting frame 4 and being provided with multiple elastic support mechanisms 5 on lower die 3, in initial state, upper die 2 and lower die 3 are in mold opening state, first flexible buffer mechanism 6 is higher than lower arc-shaped cutter 7, when steel plate is transported to blanking die, steel plate is directly contacted with first flexible buffer mechanism 6, is supported by first flexible buffer mechanism 6, then, press presses upper die 2, in the process that upper die 2 moves downward, multiple elastic support mechanisms 5 are compressed, first flexible buffer mechanism 6 is also pressed and deformed, when upper die 2 moves downward to be in mold closing state with lower die 3, complete once steel plate cutting, at this time, press moves upward and resets, multiple elastic support mechanisms 5 rebound and reset to drive upper die 2 to reset, first flexible buffer mechanism 6 restores original shape, at this time, the steel plate of cutting can be sent out, whereby, the utility model utilizes the deformation characteristics of first flexible buffer mechanism 6 to realize the contact of steel plate and lower arc-shaped cutter 7 when cutting, the separation of steel plate and lower arc-shaped cutter 7 when conveying, does not need to control material supporting frame 4 to lift additionally, so as not to reserve material supporting frame 4 lifting space, can shorten press stroke, improve production rhythm, production efficiency is higher, in addition, since lower die 3 is installed on upper die 2, can be directly removed blanking die from workbench as a whole, whereby when steel plate size is replaced, blanking die replacement can be quickly completed.

[0022] Embodiment two: this embodiment is basically same as embodiment one, the difference lies in: in the embodiment, each elastic support mechanism 5 is nitrogen spring.

[0023] In this embodiment, the bottom end of the nitrogen spring is fixed on the lower die 3, and the upper die 2 is fixed on the top end of the nitrogen spring, so as to realize the installation of the upper die 2, the nitrogen spring and the lower die 3. Since the upper die 2 and the lower die 3 are connected through the nitrogen spring, and the nitrogen spring also positions the upper die 2 and the lower die 3, when the blanking die is replaced later, the upper die 2 does not need to be disassembled on the press, and the position of the upper die 2 and the lower die 3 does not need to be repositioned during installation.

[0024] Embodiment three: this embodiment is basically the same as embodiment one, the difference is that in this embodiment, the first flexible buffering mechanism 6 includes a plurality of clusters of bristles distributed on the upper surface of the material supporting frame 4.

[0025] In this embodiment, the bristles with lower cost are used to realize contact with the steel plate and support the steel plate, and the plurality of clusters of bristles are sufficient to deform when supporting the steel plate sent into the blanking die, deform under the pressure of the upper die 2 to make the steel plate move downward and contact the lower arc-shaped cutter 7, realize cutting of the steel plate, after the upper die 2 resets, the plurality of clusters of bristles also reset, and the steel plate moves upward and separates from the lower arc-shaped cutter 7 again, avoiding scratching of the steel plate when it is transported out by the lower arc-shaped cutter 7.

[0026] Embodiment four: this embodiment is basically the same as embodiment one, the difference is that in this embodiment, as shown in Figure 3 and Figure 4 a plurality of positioning pins 8 are arranged on the base 1, and a plurality of positioning grooves 9 corresponding to the plurality of positioning pins 8 are arranged on the bottom of the lower die 3.

[0027] In this embodiment, when the lower die 3 is installed, the plurality of positioning grooves 9 are aligned with the plurality of positioning pins 8 one by one, the lower die 3 is supported by the base 1 when it moves downward, at this time, the plurality of positioning pins 8 are inserted into the plurality of positioning grooves 9 one by one, and positioning is realized, when the blanking die is replaced, only the upper die 2 and the lower die 3 need to be replaced, and thus the base 1 can realize sharing of a plurality of blanking dies, which on the one hand further reduces the difficulty of replacing the blanking die, and on the other hand also reduces the cost of the blanking die.

[0028] Embodiment five: this embodiment is basically the same as embodiment four, the difference is that in this embodiment, the base 1 is also provided with a guide mechanism 10 for guiding the steel plate to enter between the upper die 2 and the lower die 3, and a second flexible buffering mechanism 11 is arranged on the guide mechanism 10.

[0029] In this embodiment, the guide mechanism 10 is realized by using the width adjusting device mature in the current industry, and the second flexible buffering mechanism 11 is realized by using the plurality of clusters of bristles with lower cost, so as to avoid scratches caused by hard contact between the steel plate and the guide mechanism 10 when the steel plate moves in the guide mechanism 10.

[0030] In the embodiment, the steel plate is guided by the guide mechanism 10, so that the steel plate can enter between the upper die 2 and the lower die 3 according to a preset path, and the cutting precision is ensured.

[0031] Embodiment six: the embodiment is basically the same as embodiment five, the difference lies in that: in the embodiment, the guide mechanism 10 can adjust the guide width to be suitable for guiding different sizes of steel plates.

[0032] In the embodiment, the guide mechanism 10 can be adjusted in width to be suitable for guiding different sizes of steel plates, so that when the blanking die is replaced, the guide mechanism 10 and the base 1 can be shared between different specifications of blanking dies, and the replacement time and cost are saved.

[0033] In summary, the blanking die for the steel plate of the automobile stamping sheet metal part of the utility model can quickly complete the replacement of the blanking die when the size of the steel plate is replaced, can shorten the press stroke, improve the production rhythm, has high production efficiency, and has a wide application prospect in the automobile manufacturing industry.

Claims

1. A blanking die for a steel sheet for a press-formed panel of an automobile, comprising a base, an upper die, a lower die and a material support, said base being fixed to a worktable, said lower die being mounted on said base, said upper die being located above said lower die, said material support being arranged between said upper die and said lower die for supporting a steel sheet, said upper die having an upper arc-shaped cutter thereon, said lower die having a lower arc-shaped cutter thereon, characterized in that The lower die is provided with a plurality of elastic supporting mechanisms, the upper die is installed on the elastic supporting mechanisms, when the elastic supporting mechanisms are in an initial state, the upper die and the lower die are in a mold opening state, when the upper die is pressed downward by a predetermined distance, the upper die and the lower die are in a mold closing state, and the upper surface of the material supporting frame is provided with a flexible buffering mechanism.

2. The blanking die for a steel sheet for an automobile press-formed panel according to claim 1, characterized by Each elastic supporting mechanism is a nitrogen spring.

3. The blanking die for a steel sheet for an automobile press-formed panel according to claim 1, characterized in that The flexible buffering mechanism comprises a plurality of brush tufts distributed on the upper surface of the material supporting frame.

4. The blanking die for a steel sheet for an automobile press-formed panel according to claim 1, characterized in that A plurality of positioning pins are arranged on the base, and a plurality of positioning grooves corresponding to the positioning pins are arranged on the bottom of the lower die.

5. The blanking die for a steel sheet for an automobile press-formed panel according to claim 4, characterized in that A guiding mechanism for guiding the steel plate into the space between the upper die and the lower die is further installed on the base, and the guiding mechanism is also provided with a flexible buffering mechanism.

6. A blanking die for a steel sheet for an automobile stamping part according to claim 5, characterized in that The guiding mechanism can adjust the guiding width to be suitable for guiding steel plates of different sizes.

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