CN111482809A

CN111482809A - Hot stamping steel

Info

Publication number: CN111482809A
Application number: CN202010184686.XA
Authority: CN
Inventors: 阎勇; 杨胜; 张家俊
Original assignee: 阎勇
Current assignee: Shenzhen I want Mold Technology Co.,Ltd.
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-08-04
Anticipated expiration: 2040-03-17
Also published as: CN111482809B

Abstract

The invention belongs to the technical field of steel processing, and particularly relates to hot stamping steel, which comprises a body; the body is processed by using a hot stamping die, the hot stamping die comprises a forming structure, a stamping structure and a pressure plate, and a forming groove corresponding to the characteristic shape of the finished body is formed in the forming structure; the top of the stamping structure is provided with a cutting module, the cutting module comprises a cutting groove, the bottom end of the cutting groove is provided with a pneumatic push rod, and the top of the pneumatic push rod is connected with a cutting knife; according to the invention, the precutting structure is arranged on the hot stamping die, so that the heated steel body forms precutting marks at the position needing to be cut before quenching and hardening, the steel can be conveniently and quickly cut only by using a common cutting device, the production cost of the hot stamping steel is greatly reduced, and the durability and the service life of the cutting device are increased.

Description

Hot stamping steel

Technical Field

The invention belongs to the technical field of steel processing, and particularly relates to hot stamping steel.

Background

In the automobile parts, the steel parts also account for an important part, and under the demand for high-strength and light and thin steel, how to cut the high-strength steel by using a cutting technology without using expensive cutting equipment becomes an important subject for reducing the cost; in view of the demand of the die for hot stamping steel, particularly for thin and high-strength steel in the automobile industry, the strength of the cooled product is increased, and the general equipment for cutting steel is not suitable for cutting such product, but expensive laser cutting equipment is used for cutting, which not only has high technical requirements, but also increases the production cost of hot stamping steel during cutting.

In view of the above, the invention provides a hot stamping steel, and the precut structure is arranged on the hot stamping die, so that the heated steel body forms precut traces at the position needing to be cut before quenching and hardening, the steel can be conveniently and quickly cut only by using a common cutting device, the production cost of the hot stamping steel is greatly reduced, and the durability and the service life of the cutting device are increased.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the hot stamping steel, the precutting structure is arranged on the hot stamping die, so that the heated steel body forms precutting marks at the positions needing to be cut before quenching and hardening, the steel can be conveniently and quickly cut only by using a common cutting device, the production cost of the hot stamping steel is greatly reduced, and the durability and the service life of the cutting device are increased.

The technical scheme adopted by the invention for solving the technical problems is as follows: a hot stamped steel product comprising a body; the body is processed by using a hot stamping die, the hot stamping die comprises a forming structure, a stamping structure and a pressure plate, a forming groove corresponding to the characteristic shape of the finished product of the body is arranged in the forming structure, and the forming groove is matched with the bottom end of the stamping structure and can enable the body to be stamped into the characteristic shape of the finished product; the material pressing plates are symmetrically arranged on two sides of the stamping structure and can press the body on the upper surface of the forming structure, the top of the stamping structure outside the material pressing plates is provided with a cutting module, the cutting module comprises cutting grooves arranged on the top of the stamping mechanism, the bottom ends inside the cutting grooves are provided with pneumatic push rods, the tops of the pneumatic push rods are connected with cutting knives, the cross section shapes of the cutting knives are triangular, the positions of the cutting knives correspond to the positions of the body to be cut, and the cutting knives can pre-cut the body which is subjected to stamping forming and is not quenched; the hot stamping die is provided with a controller, and the controller is used for controlling the automatic operation of the die; in operation, for the die for hot stamping steel, especially in the automobile industry, the demand for thin and high-strength steel is gradually increased, and in the case that the strength of the cooled product is increased, the general equipment for cutting steel is not suitable for cutting such product, but expensive laser cutting equipment is used for cutting, so that the technical requirement is high, and the production cost of hot stamping steel during cutting is increased; when the hot stamping steel is produced, firstly, a steel body to be stamped is heated at high temperature to be in a state with lower tensile strength, then the body is placed on the upper surface of a forming structure, the position to be stamped corresponds to a forming groove and the stamping structure, then the body between the forming groove and the stamping structure is driven to realize stamping forming through the stamping structure moving towards the inside of the forming groove, in the process, a cutting knife is always positioned in a cutting groove, then before the heated body is quenched and hardened, a controller controls a pneumatic push rod to drive the cutting knife to move upwards so that the cutting knife is extruded at the position to be cut on the bottom surface of the body and forms a triangular precutting trace, then the body is immediately quenched and hardened, and at the moment, the thickness of the finished surface of the high-strength steel at the precutting trace is thinner than the thickness which is not precutting, at the moment, the steel can be conveniently and quickly cut only by using a common cutting device, so that the production cost is greatly reduced, and the durability and the service life of the cutting device are increased.

Preferably, sliding grooves are symmetrically formed in the top ends of the side walls of the cutting grooves on the two sides of the cutting knife, sliding plates are arranged in the sliding grooves, the top surfaces of the sliding plates are flush with the top surface of the stamping structure, one end, far away from the cutting knife, of each sliding plate is connected with the side surface of the inner end of each sliding groove through a spring, and an inclined extrusion surface is arranged at one end, close to the cutting knife, of each sliding plate; during operation, two slides under initial condition carry out the shutoff to the cutting groove notch under the effect of spring, when pneumatic putter drives the cutting knife upward movement and cuts steel, the slope side of cutting knife both sides extrudees two squeeze face on the slide of top both sides this moment, make the slide to the inside slip of spout of both sides and no longer carry out the shutoff to the cutting groove notch under the effect of cutting knife, thereby make the cutting knife follow cutting groove inside roll-off and work smoothly, reduce the long-time exposed damage that produces in the external world of cutting knife, after work and reset are accomplished to the cutting knife, two slides reset and carry out the protection that lasts to the cutting knife under the effect of spring this moment, the effectual life and the operating mass that have strengthened the cutting knife.

Preferably, the limiting plate protruding towards one side of the cutting knife is arranged on the stamping structure at the top of the sliding groove, the sliding plate is L-shaped and matched with the limiting plate, and the sliding plate can freely slide in the sliding groove at the bottom end of the limiting plate, when the hot stamping device works, the cutting knife moves upwards to generate an upward acting force on the sliding plate, so that the sliding plate can extrude steel at the top and generate an indentation, at the moment, the limiting plate is arranged at the top of the sliding groove, so that the bottom surface of the limiting plate can apply an opposite acting force on the stressed sliding plate, the extrusion force of the sliding plate on the steel at the top is effectively reduced, and the production quality of the hot stamping steel is effectively.

Preferably, each sliding plate consists of a fixed block at the inner end and an adjusting block at the outer end, an adjusting bolt is rotatably connected to the end surface, close to the fixed block, of the adjusting block, and the other end of the adjusting bolt is in threaded connection with the end surface of the fixed block; the bottom end of the pneumatic push rod is provided with a sliding sleeve, and the sliding sleeve is connected to the sliding rod in a sliding manner; the during operation, when the position of steel cutting needs the adjustment, make adjusting bolt drive the regulating block of opposite side for the fixed block moves through twisting adjusting bolt this moment, thereby make the slide length that fixed block and regulating block constitute obtain effectual regulation, drive the cutting knife at top through removing the sliding sleeve afterwards and carry out relative motion, thereby make cutting knife and slide adjust to the position that needs the cutting on the steel, and then make hot stamping die can adapt to the cutting needs of different steel, the practicality and the suitability of mould have been strengthened greatly.

Preferably, the number of the cutting modules on two sides of the forming groove is at least three, and the distribution positions of the cutting modules correspond to the cutting positions of different stamping steel bodies; during operation, though the cutting ability of the different positions of steel is increased through the structure that sets up slide and cutting knife bottom installation, the adjustment distance of cutting knife is limited, can't adapt to the cutting position adjustment on the steel is wider, this moment through the quantity and the distribution position that set up the cutting module for the cutting knife in groups can carry out more extensively and effectual regulation to the cutting position of different steel, thereby has further strengthened hot stamping die's suitability.

Preferably, the sliding rods on one side of the forming groove are connected with each other to form an integral body, the positions of the sliding rods corresponding to the sliding sleeves are arranged in a ball screw form, and the outer ends of the sliding rods are connected with a motor; the during operation, when the position of cutting knife is adjusted to needs, the controller drives the slide bar through control motor and rotates this moment to make the sliding sleeve of ball screw department slide and drive the cutting knife and move to the position department that steel needs the cutting, reduce artifical sliding sleeve and carry out the time and energy wasting and fix a position inaccurate that leads to when the position was reconciled to the cutting knife, strengthened the cutting efficiency and the precision of cutting knife greatly, thereby further improved the production quality of hot stamping steel.

The invention has the following beneficial effects:

1. according to the invention, the precutting structure is arranged on the hot stamping die, so that the heated steel body forms precutting marks at the position needing to be cut before quenching and hardening, the steel can be conveniently and quickly cut only by using a common cutting device, the production cost of the hot stamping steel is greatly reduced, and the durability and the service life of the cutting device are increased.

2. According to the invention, the sliding plate and the sliding groove are arranged at the top of the cutting groove, so that the notches of the cutting groove are sealed by the two sliding plates under the action of the spring, the damage caused by the fact that the cutting knife is exposed outside for a long time is reduced, and the service life and the working quality of the cutting knife are effectively enhanced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of a hot stamping die according to the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic structural view of a hot stamping die according to the present invention;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at C in FIG. 4;

in the figure: the device comprises a body 1, a hot stamping die 2, a forming structure 3, a forming groove 31, a stamping structure 4, a pressure plate 5, a cutting module 6, a cutting groove 61, a pneumatic push rod 62, a cutting knife 63, a sliding groove 64, a limiting plate 65, a sliding sleeve 66, a sliding rod 67, a motor 68, a sliding plate 7, a spring 71, a squeezing surface 72, a fixed block 73, an adjusting block 74 and an adjusting bolt 75.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.

As shown in fig. 1 to 5, a hot-stamped steel material according to the present invention includes a body 1; the body 1 is processed by using a hot stamping die 2, the hot stamping die 2 comprises a forming structure 3, a stamping structure 4 and a pressure plate 5, a forming groove 31 corresponding to the characteristic shape of the finished product of the body 1 is arranged in the forming structure 3, and the forming groove 31 is matched with the bottom end of the stamping structure 4 and can enable the body 1 to be stamped into the characteristic shape of the finished product; the material pressing plates 5 are symmetrically arranged on two sides of the stamping structure 4 and can press the body 1 on the upper surface of the forming structure 3, the cutting modules 6 are arranged on the top of the stamping structure 4 on the outer side of the material pressing plates 5, each cutting module 6 comprises a cutting groove 61 arranged on the top of the stamping mechanism, pneumatic push rods 62 are arranged at the bottom ends of the inner portions of the cutting grooves 61, the tops of the pneumatic push rods 62 are connected with cutting knives 63, the cross sections of the cutting knives 63 are triangular, the positions of the cutting knives 63 correspond to the positions of the body 1 to be cut, and the cutting knives 63 can pre-cut the body 1 which is subjected to stamping forming and is not quenched; the hot stamping die 2 is provided with a controller, and the controller is used for controlling the automatic operation of the die; in operation, for the die for hot stamping steel, especially in the automobile industry, the demand for thin and high-strength steel is gradually increased, and in the case that the strength of the cooled product is increased, the general equipment for cutting steel is not suitable for cutting such product, but expensive laser cutting equipment is used for cutting, so that the technical requirement is high, and the production cost of hot stamping steel during cutting is increased; when the hot stamping steel product is produced, firstly, a steel product body 1 to be stamped is heated at a high temperature to a state with lower tensile strength, then the body 1 is placed on the upper surface of a forming structure 3, the position to be stamped corresponds to a forming groove 31 and a stamping structure 4, then the stamping structure 4 moves towards the inside of the forming groove 31 and drives the body 1 between the forming groove and the stamping structure to realize stamping forming, in the process, a cutting knife 63 is always positioned in a cutting groove 61, then before the heated body 1 is quenched and hardened, a controller controls a pneumatic push rod 62 to drive the cutting knife 63 to move upwards so that the cutting knife 63 extrudes at the position to be cut on the bottom surface of the body 1 and forms a triangular pre-cutting mark, then the body 1 is immediately quenched and hardened, at the moment, the thickness of the surface of a finished product of the high-strength steel product at the pre-cutting mark is thinner than the thickness which is not pre-cut, at the moment, the steel can be conveniently and quickly cut only by using a common cutting device, so that the production cost is greatly reduced, and the durability and the service life of the cutting device are increased.

As an embodiment of the present invention, sliding grooves 64 are symmetrically arranged at the top ends of the side walls of the cutting groove 61 at both sides of the cutting knife 63, sliding plates 7 are arranged inside the sliding grooves 64, the top surface of the sliding plate 7 is flush with the top surface of the stamping structure 4, a spring 71 is connected between one end of the sliding plate 7 far away from the cutting knife 63 and the side surface of the inner end of the sliding groove 64, and an inclined squeezing surface 72 is arranged at one end of the sliding plate 7 close to the cutting knife 63; during operation, two slides 7 under initial condition are shutoff to cutting groove 61 notch under spring 71's effect, when pneumatic putter 62 drives cutting knife 63 upward movement and cuts steel, the slope side of cutting knife 63 both sides extrudees two squeeze face 72 on the top both sides slide 7 this moment, make slide 7 slide to the spout 64 inside of both sides under the effect of cutting knife 63 and no longer carry out the shutoff to cutting groove 61 notch, thereby make cutting knife 63 follow cutting groove 61 inside roll-off and work smoothly, reduce the long-time damage that exposes in the external world and produce of cutting knife 63, accomplish work and the back that resets as cutting knife 63, two slides 7 reset and carry out the protection that lasts to cutting knife 63 under spring 71's effect this moment, the effectual life and the operating mass that has strengthened cutting knife 63.

According to one embodiment of the invention, the limiting plate 65 protruding towards one side of the cutting knife 63 is arranged on the stamping structure 4 at the top of the sliding groove 64, the shape of the sliding plate 7 is set to be L shape matched with the limiting plate 65, and the sliding plate 7 can freely slide in the sliding groove 64 at the bottom end of the limiting plate 65. during operation, an upward acting force can be generated on the sliding plate 7 due to the upward movement of the cutting knife 63, so that the sliding plate 7 can extrude the steel at the top and generate an indentation, at the moment, the limiting plate 65 is arranged at the top of the sliding groove 64, so that the bottom surface of the limiting plate 65 can apply an opposite acting force to the stressed sliding plate 7, the extrusion force of the sliding plate 7 on the steel at the top can be effectively reduced, and the production quality of.

As an embodiment of the present invention, each of the sliding plates 7 is composed of a fixed block 73 at the inner end and an adjusting block 74 at the outer end, an adjusting bolt 75 is rotatably connected to an end surface of the adjusting block 74 close to the fixed block 73, and the other end of the adjusting bolt 75 is in threaded connection with the end surface of the fixed block 73; the bottom end of the pneumatic push rod 62 is provided with a sliding sleeve 66, and the sliding sleeve 66 is connected to a sliding rod 67 in a sliding manner; the during operation, when the position of steel cutting needs the adjustment, make adjusting bolt 75 drive the regulating block 74 of opposite side for fixed block 73 moves through twisting adjusting bolt 75 this moment, thereby make fixed block 73 and slide 7 length that regulating block 74 is constituteed obtain effectual regulation, drive the cutting knife 63 at top through removing sliding sleeve 66 afterwards and carry out relative motion, thereby make cutting knife 63 and slide 7 adjust to the position that needs the cutting on the steel, and then make hot stamping die 2 can adapt to the cutting needs of different steel, the practicality and the suitability of mould have been strengthened greatly.

As an embodiment of the present invention, the number of the cutting modules 6 on both sides of the forming groove 31 is at least three, and the distribution positions of the cutting modules 6 correspond to the cutting positions of different stamped steel bodies 1; during operation, though the cutting ability of the different positions of steel is increased through the structure that sets up slide 7 and cutting knife 63 bottom installation, but cutting knife 63's adjustment distance is limited, can't adapt to the cutting position adjustment on the steel is wider, this moment through the quantity and the distribution position that set up cutting module 6 for unitized cutting knife 63 can carry out more extensively and effectual regulation to the cutting position of different steel, thereby has further strengthened hot stamping die 2's suitability.

As an embodiment of the present invention, the sliding rods 67 on one side of the forming groove 31 are connected with each other and formed into a single body, and the positions of the sliding rods 67 corresponding to the sliding sleeves 66 are provided in the form of ball screws, while the outer ends of the sliding rods 67 are connected with the motor 68; the during operation, when the position to cutting knife 63 needs to be adjusted, the controller drives slide bar 67 through control motor 68 and rotates this moment, thereby make sliding sleeve 66 of ball screw department slide and drive cutting knife 63 and move to the position department that steel needs the cutting, reduce artifical sliding sleeve 66 and carry out the time and energy wasting and fix a position inaccurate that leads to when the position is reconciled to cutting knife 63, the cutting efficiency and the precision of cutting knife 63 have been strengthened greatly, thereby the production quality of hot stamping steel has further been improved.

During working, firstly, the steel body 1 to be punched is heated at high temperature to a state with lower tensile strength, then the body 1 is placed on the upper surface of the forming structure 3, the position to be punched corresponds to the forming groove 31 and the punching structure 4, then the punching structure 4 moves towards the inside of the forming groove 31 and drives the body 1 between the forming groove and the forming groove to realize punching forming, in the process, the cutting knife 63 is always positioned in the cutting groove 61, then before the heated body 1 is quenched and hardened, the controller controls the pneumatic push rod 62 to drive the cutting knife 63 to move upwards, so that the cutting knife 63 extrudes at the position to be cut on the bottom surface of the body 1 and forms a triangular precut trace, then the body 1 is immediately quenched and hardened, and at the moment, the thickness of the finished surface of the high-strength steel at the precut trace is thinner than the thickness which is not precut, at the moment, the steel can be conveniently and quickly cut only by using a common cutting device, so that the production cost is greatly reduced, and the durability and the service life of the cutting device are improved; meanwhile, the sliding plates 7 and the sliding grooves 64 are arranged at the tops of the cutting grooves 61, so that the notches of the cutting grooves 61 are sealed by the two sliding plates 7 under the action of the springs 71, the damage caused by the fact that the cutting knife 63 is exposed outside for a long time is reduced, and the service life and the working quality of the cutting knife 63 are effectively prolonged; and when the position of steel cutting needs the adjustment, make adjusting bolt 75 drive the regulating block 74 of opposite side for fixed block 73 moves through twisting adjusting bolt 75 this moment, thereby make fixed block 73 and slide 7 length that regulating block 74 constitutes obtain effectual regulation, drive slide bar 67 through motor 68 afterwards and rotate, thereby make the sliding sleeve 66 of ball screw department slide, and then make cutting knife 63 and slide 7 adjust the position that needs the cutting to steel, make hot stamping die 2 can adapt to the cutting needs of different steel, hot stamping die 2's practicality and suitability have been strengthened greatly.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A hot-stamped steel material comprising a body (1); the method is characterized in that: the body (1) is processed by using a hot stamping die (2), the hot stamping die (2) comprises a forming structure (3), a stamping structure (4) and a pressure plate (5), a forming groove (31) corresponding to the characteristic shape of the finished product of the body (1) is formed in the forming structure (3), and the forming groove (31) is matched with the bottom end of the stamping structure (4) and can enable the body (1) to be stamped into the characteristic shape of the finished product; the material pressing plates (5) are symmetrically arranged on two sides of the stamping structure (4) and can press the body (1) on the upper surface of the forming structure (3), the cutting module (6) is arranged at the top of the stamping structure (4) on the outer side of the material pressing plates (5), the cutting module (6) comprises a cutting groove (61) arranged at the top of the stamping mechanism, pneumatic push rods (62) are arranged at the bottom ends of the inner parts of the cutting groove (61), a cutting knife (63) is connected to the top of each pneumatic push rod (62), the cross section of each cutting knife (63) is triangular, the position of each cutting knife (63) corresponds to the position of the body (1) to be cut, and the cutting knife (63) can pre-cut the body (1) which is subjected to stamping forming and is not quenched; and the hot stamping die (2) is provided with a controller, and the controller is used for controlling the automatic operation of the die.

2. A hot-stamped steel product according to claim 1, characterised in that: the cutting groove (61) lateral wall top symmetry of cutting knife (63) both sides is provided with spout (64), spout (64) inside all is equipped with gliding slide (7), slide (7) top surface and stamping structure (4) top surface flush mutually, link to each other with spring (71) between the one end that cut knife (63) were kept away from in slide (7) and spout (64) inner side, the one end that slide (7) are close to cut knife (63) is provided with extrusion face (72) of slope.

3. A hot-stamped steel product according to claim 2, characterized in that the stamping structure (4) at the top of the runner (64) is provided with a limit plate (65) projecting towards the side of the cutting knife (63), the slider (7) is shaped like L cooperating with the limit plate (65), and the slider (7) is able to slide freely in the runner (64) at the bottom end of the limit plate (65).

4. A hot-stamped steel product according to claim 3, characterised in that: the sliding plate (7) is composed of a fixed block (73) at the inner end and an adjusting block (74) at the outer end, an adjusting bolt (75) is rotatably connected to the end face, close to the fixed block (73), of the adjusting block (74), and the other end of the adjusting bolt (75) is in threaded connection with the end face of the fixed block (73); the bottom end of the pneumatic push rod (62) is provided with a sliding sleeve (66), and the sliding sleeve (66) is connected to the sliding rod (67) in a sliding mode.

5. A hot-stamped steel product according to claim 1, characterised in that: the number of the cutting modules (6) on two sides of the forming groove (31) is at least three, and the distribution positions of the cutting modules (6) correspond to the cutting positions of different stamping steel bodies (1).

6. A hot-stamped steel product according to claim 5, characterised in that: the sliding rods (67) at one side of the forming groove (31) are connected with each other and form a whole, the positions of the sliding rods (67) corresponding to the sliding sleeves (66) are arranged in a ball screw mode, and the outer ends of the sliding rods (67) are connected with a motor (68).