CN112620447B

CN112620447B - Automobile stamping steel plate die convenient to separate and manufacturing process thereof

Info

Publication number: CN112620447B
Application number: CN202011398615.6A
Authority: CN
Inventors: 林卫腾; 曾伟明
Original assignee: Guangdong Topzone Tooling Co ltd
Current assignee: Guangdong Topzone Tooling Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2022-10-14
Anticipated expiration: 2040-12-02
Also published as: CN112620447A

Abstract

The invention discloses an automobile stamping steel plate die convenient to separate, which comprises a female die fixing seat, a female die, a male die and a male die fixing seat, wherein the female die is fixedly connected to the bottom of the female die fixing seat, and the automobile stamping steel plate die convenient to separate is manufactured. Through separation hydraulic push rod, split type die fixing base and split type die, steel sheet card that adds the hot state after the punching press finishes drives through separation hydraulic push rod on the die, separate die fixing base and die, thereby make first separation seat and second separation seat drive left die and right die of die, make slight separation between left die and the right die, thereby make the more convenient separation from stamping die of steel sheet of card on the die, cooperate the inside cooling module of terrace die in addition, before the punching press steel sheet finishes not separating after dashing, accessible cooling module cools off the steel sheet, thereby make the steel sheet take place the shrink of certain degree, also be favorable to the drawing of patterns of steel sheet.

Description

Automobile stamping steel plate die convenient to separate and manufacturing process thereof

Technical Field

The invention belongs to the technical field of automobile stamping steel plate dies, and particularly relates to an automobile stamping steel plate die convenient to separate and a manufacturing process thereof.

Background

Compared with the common steel plate, the high-strength steel plate has higher yield strength and tensile strength, meets the requirements of improving the safety performance and the collision performance of the automobile, but has lower hardening index, thickness anisotropy index and elongation rate, so that the forming precision of the high-strength steel plate is much lower than that of the common steel plate, and along with the increase of the strength, the high-strength steel plate is more difficult to form under the traditional cold stamping process condition, thereby causing the poor problems of wrinkling, cracking, rebounding, difficult size control and the like of the plate in the forming process, and simultaneously, the die is seriously worn, so that the service life of the die is greatly reduced. Therefore, the original cold stamping forming process can not meet the requirements of the automobile industry on technology and production development, and a novel hot stamping forming technology for high-strength steel plates is promoted. The technology is that a high-strength steel plate is heated to a certain temperature at a high temperature to be fully austenitized, and then is rapidly transferred into a hot stamping die, rapid forming is carried out by utilizing the characteristics of extensibility, plasticity increase and yield strength reduction of the plate in a high-temperature state, meanwhile, rapid quenching and cooling of the plate are realized by utilizing a cooling system arranged in the die, and then an ultrahigh-strength part with uniform martensite structure, good shape and size precision and strength of more than 1500MPa is obtained. Compared with the traditional cold stamping technology, the hot stamping forming technology is a complex forming technology which combines plate forming and quenching cooling.

In actual hot stamping steel sheet production process, because the steel sheet is in heating state then expend with heat and contract with cold, the possibility of card in the die can appear in the back steel sheet that the punching press finishes, then need extra supplementary drawing of patterns this time, need extra supplementary efficiency that then can influence steel sheet stamping, for the separation drawing of patterns that the punching press steel sheet processing finishes, further improve stamping processing's work efficiency, therefore we need propose a car punching press steel sheet mould and manufacturing process convenient to separate.

Disclosure of Invention

The invention aims to solve the defects in the prior art, the split type female die fixing seat and the split type female die are separated, a steel plate in a heating state is clamped on the female die after stamping is finished and is driven by the split hydraulic push rod to separate the female die fixing seat from the female die, so that the first separating seat and the second separating seat drive the left female die and the right female die of the female die to slightly separate the left female die and the right female die, the steel plate clamped on the female die is more conveniently separated from a stamping die, and the steel plate can be cooled by the cooling assembly before being separated after the stamping of the steel plate is finished by matching with the cooling assembly in the male die.

In order to achieve the purpose, the invention provides the following technical scheme: the automobile stamping steel plate die convenient to separate comprises a female die fixing seat, a female die, a male die and a male die fixing seat, wherein the female die is fixedly connected to the bottom of the female die fixing seat, the male die is fixedly connected to the upper portion of the male die fixing seat, the female die fixing seat and the female die are arranged right above the male die and the male die fixing seat, the female die fixing seat comprises a first separating seat and a second separating seat, the upper portions of the first separating seat and the second separating seat are respectively and fixedly connected with a first base and a second base, a separating hydraulic push rod is fixedly connected to the second base, and a piston rod of the female die fixing seat of the separating hydraulic push rod is fixedly connected to the first base;

the die sets up to the die dismantled of constituteing by left die and right die, the position sleeve is installed in the inboard embedding of first separation seat of die fixing base, the location inner tube is installed in the inboard embedding of second separation seat of die fixing base, the location inner tube slides and pegs graft in position sleeve, and sets up the spacing bulge loop that is used for preventing to fix a position the inner tube and drops in the position sleeve, be provided with the butt joint groove of stepping down between first separation seat, second separation seat and the die.

Preferably, a cooling medium circulation pipe and a cooling medium conveying pipe are inserted into the male die fixing seat, and a water inlet and a water outlet of the cooling medium conveying pipe are arranged on the side portion of one side of the male die fixing seat.

Preferably, the front face of the first separation seat of the female die fixing seat is inserted with a first tube seat in a sliding manner, the front face of the second separation seat of the female die fixing seat is inserted with a second tube seat in a sliding manner, the positioning sleeve is fixedly connected inside the first tube seat, and the positioning inner tube is fixedly connected inside the second tube seat.

Preferably, the inner bottoms of the first pipe seat and the second pipe seat are integrally formed with a fixed base, and the positioning sleeve and the positioning inner pipe are fixedly connected to the inner parts of the first pipe seat and the second pipe seat through the fixed base.

Preferably, the upper parts of the first separating seat and the second separating seat of the female die fixing seat are both provided with locking bolts in a threaded manner, the upper parts of the first tube seat and the second tube seat are fixedly connected with bolt fixing seats, and the locking bolts are arranged on the upper parts of the bolt fixing seats in a threaded manner.

Preferably, the upper portion of bolt fixing base is seted up and is used for cooperating the internal thread hole of locking bolt, the counter sink has all been seted up on the first separation seat of die fixing base and the second separation seat, locking bolt runs through counter sink screw thread and installs on bolt fixing base.

Preferably, the first separating seat and the second separating seat are respectively provided with a plugging groove for plugging the first tube seat and the second tube seat, and the first separating seat and the second separating seat are respectively provided with a fixing seat slot for plugging the bolt fixing seat.

Preferably, the equal fixedly connected with reference column in outside portion of die left side die and right die, the outside portion of first separation seat and second separation seat all is provided with the constant head tank, die left side die and right die all cooperate the bottom of constant head tank fixed connection at first separation seat and second separation seat through the reference column.

The invention also provides a manufacturing process of the automobile stamping steel plate die convenient to separate, which comprises the following steps:

s1, heating a steel plate material with stamping to austenitizing temperature, preserving heat for a period of time, and quickly placing the steel plate material on a pressing position of a male die;

s2, the press machine drives the female die fixing seat and the female die to descend until the female die and the male die enable the steel plate to be completely punched and formed, cooling media are introduced into a cooling medium circulation pipe and a cooling medium conveying pipe of the male die to cool and quench the steel plate, and the introduction of the cooling media is stopped after the temperature of the steel plate reaches;

and S3, slightly separating the first separating seat and the second separating seat of the female die fixing seat by the hydraulic separating push rod so as to assist the steel sheet to be demoulded from the female die and the male die, and then driving the female die fixing seat and the female die to move upwards by the press machine to complete the punch forming of the steel sheet.

The invention has the technical effects and advantages that: according to the automobile punching steel plate die convenient to separate, the hydraulic push rod, the split type female die fixing seat and the split type female die are separated, the steel plate in a heating state is clamped on the female die after punching is finished, the hydraulic push rod is separated to drive the female die fixing seat and the female die to be separated, so that the first separating seat and the second separating seat drive the left female die and the right female die of the female die, the left female die and the right female die are slightly separated, the steel plate clamped on the female die is more conveniently separated from the punching die, in addition, a cooling assembly in the male die is matched, the steel plate can be cooled through the cooling assembly before the steel plate is not separated after punching is finished, the steel plate is contracted to a certain degree, and demolding of the steel plate is facilitated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a female die holder and a female die according to the present invention;

FIG. 3 is a schematic view of the internal structure of the first socket and the first socket of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 5 is a flow chart of the manufacturing process of the automobile stamped steel plate die convenient for separation according to the present invention.

In the figure: 1. a female die fixing seat; 2. a female die; 3. a male die; 4. a male die fixing seat; 5. a cooling medium delivery pipe; 6. a cooling medium circulation pipe; 7. separating the hydraulic push rod; 8. butting the abdicating grooves; 9. a first base; 10. a second base; 11. inserting grooves; 12. positioning the inner tube; 13. positioning the sleeve; 14. a first stem; 15. a second stem; 16. a positioning column; 17. positioning a groove; 18. a fixed seat slot; 19. a first separating seat; 20. a second separating seat; 21. a countersunk hole; 22. locking the bolt; 23. a bolt fixing seat; 24. a limit convex ring; 25. and fixing the base.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1

A conveniently separated automobile stamping steel plate die comprises a female die fixing seat 1, a female die 2, a male die 3 and a male die fixing seat 4, wherein the female die 2 is fixedly connected to the bottom of the female die fixing seat 1, the male die 3 is fixedly connected to the upper portion of the male die fixing seat 4, the female die fixing seat 1 and the female die 2 are arranged right above the male die 3 and the male die fixing seat 4, the female die fixing seat 1 comprises a first separating seat 19 and a second separating seat 20, the upper portions of the first separating seat 19 and the second separating seat 20 are respectively and fixedly connected with a first base 9 and a second base 10, a separating hydraulic push rod 7 is fixedly connected to the second base 10, and a piston rod of the female die fixing seat 1 of the separating hydraulic push rod 7 is fixedly connected to the first base 9; through separation hydraulic push rod 7, split type die fixing base 1 and split type die 2, steel sheet card that adds the hot state after the punching press finishes drives through separation hydraulic push rod 7 when on die 2, separate die fixing base 1 and die 2, thereby make first separation seat 19 and second separation seat 20 drive the left die and the right die of die 2, make slight separation between left die and the right die, thereby make the more convenient separation from stamping die of steel sheet of card on die 2

Die 2 sets up to the die dismantled of constituteing by left die and right die, and the locating sleeve 13 is installed in the inboard embedding of 19 first separation seats of die fixing base 1, and location inner tube 12 is installed in the inboard embedding of 20 second separation seats of die fixing base 1, and location inner tube 12 slides and pegs graft in locating sleeve 13, and sets up the spacing bulge loop 24 that is used for preventing that location inner tube 12 from droing in the locating sleeve 13, and first separation seats 19, be provided with the butt joint groove 8 of stepping down between second separation seats 20 and the die 2.

A cooling medium circulation pipe 6 and a cooling medium conveying pipe 5 are inserted into the male die fixing seat 4, and a water inlet and a water outlet of the cooling medium conveying pipe 5 are arranged on the side portion of one side of the male die fixing seat 4. The front surface of a first separation seat 19 of the female die fixing seat 1 is inserted with a first tube seat 14 in a sliding mode, the front surface of a second separation seat 20 of the female die fixing seat 1 is inserted with a second tube seat 15 in a sliding mode, the positioning sleeve 13 is fixedly connected inside the first tube seat 14, and the positioning inner tube 12 is fixedly connected inside the second tube seat 15. The inside cooling module of cooperation terrace die 3, before the punching press steel sheet is gone out and is not separated after finishing, accessible cooling module cools off the steel sheet to make the steel sheet take place the shrink of certain degree, also be favorable to the drawing of patterns of steel sheet.

The inner bottom parts of the first pipe seat 14 and the second pipe seat 15 are integrally formed with a fixed base 25, and the positioning sleeve 13 and the positioning inner pipe 12 are fixedly connected to the inner parts of the first pipe seat 14 and the second pipe seat 15 through the fixed base 25. The locking bolts 22 are installed on the upper portions of the first separating seat 19 and the second separating seat 20 of the female die fixing seat 1 in a threaded mode, the bolt fixing seats 23 are fixedly connected to the upper portions of the first tube seat 14 and the second tube seat 15, and the locking bolts 22 are installed on the upper portions of the bolt fixing seats 23 in a threaded mode.

An inner threaded hole used for being matched with a locking bolt 22 is formed in the upper portion of the bolt fixing seat 23, counter bores 21 are formed in the first separating seat 19 and the second separating seat 20 of the female die fixing seat 1, and the locking bolt 22 penetrates through the counter bores 21 and is installed on the bolt fixing seat 23 in a threaded mode. The inserting groove 11 for inserting the first tube seat 14 and the second tube seat 15 is formed in the first separating seat 19 and the second separating seat 20, and the fixing seat inserting groove 18 for inserting the bolt fixing seat 23 is formed in the first separating seat 19 and the second separating seat 20.

The equal fixedly connected with reference column 16 in outside portion of 2 left dies of die and right die, the outside portion of first separation seat 19 and second separation seat 20 all is provided with

constant head tank

17, and 2 left dies of die and right die all cooperate constant head tank 17 fixed connection through reference column 16 in the bottom of first separation seat 19 and second separation seat 20.

s2, the press machine drives the female die fixing seat and the female die to move downwards until the female die and the male die enable the steel plate to be completely punched and formed, cooling media are introduced into a cooling medium circulation pipe and a cooling medium conveying pipe of the male die to cool and quench the steel plate, and the introduction of the cooling media is stopped after the temperature of the steel plate reaches;

and S3, slightly separating the first separating seat and the second separating seat of the female die fixing seat by the separating hydraulic push rod so as to assist the steel plate to be demoulded from the female die and the male die, and then driving the female die fixing seat and the female die to move upwards by the press machine to complete the punch forming of the steel plate.

In conclusion: according to the automobile steel plate stamping die convenient to separate, the hydraulic push rod 7, the split type female die fixing seat 1 and the split type female die 2 are separated, a steel plate in a heating state is clamped on the female die 2 after stamping is finished, the hydraulic push rod 7 is separated to drive, the female die fixing seat 1 is separated from the female die 2, the first separating seat 19 and the second separating seat 20 drive the left female die and the right female die of the female die 2, the left female die and the right female die are slightly separated, the steel plate clamped on the female die 2 can be conveniently separated from the stamping die, a cooling assembly in the male die 3 is matched, the steel plate can be cooled through the cooling assembly before the steel plate is not separated after stamping is finished, and therefore the steel plate is shrunk to a certain degree, and demolding of the steel plate is facilitated.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions and improvements to part of the technical features of the foregoing embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automobile punching press steel sheet mould convenient to separation, includes die fixing base (1), die (2), terrace die (3) and terrace die fixing base (4), die (2) fixed connection is in the bottom of die fixing base (1), terrace die (3) fixed connection is on the upper portion of terrace die fixing base (4), die fixing base (1) and die (2) set up directly over terrace die (3) and terrace die fixing base (4), its characterized in that: the die fixing seat (1) comprises a first separating seat (19) and a second separating seat (20), the upper parts of the first separating seat (19) and the second separating seat (20) are respectively and fixedly connected with a first base (9) and a second base (10), a separating hydraulic push rod (7) is fixedly connected to the second base (10), and a piston rod of the separating hydraulic push rod (7) is fixedly connected to the first base (9);

die (2) set up to the die dismantled of constituteing by left die and right die, position sleeve (13) are installed in the inboard embedding of first separation seat (19) of die fixing base (1), location inner tube (12) are installed in the inboard embedding of second separation seat (20) of die fixing base (1), location inner tube (12) slide and peg graft in position sleeve (13), and set up spacing bulge loop (24) that are used for preventing to fix a position inner tube (12) and drop in position sleeve (13), be provided with between first separation seat (19), second separation seat (20) and die (2) and dock groove (8) of stepping down.

2. The easy-to-separate automobile stamped steel plate die set of claim 1, wherein: the cooling medium conveying pipe is characterized in that a cooling medium circulating pipe (6) and a cooling medium conveying pipe (5) are installed inside the male die fixing seat (4) in an inserted mode, and a water inlet and a water outlet of the cooling medium conveying pipe (5) are formed in the side portion of one side of the male die fixing seat (4).

3. The easy-to-separate automobile stamped steel plate die set of claim 1, wherein: the die is characterized in that a first separation seat (19) of the die fixing seat (1) is inserted with a first tube seat (14) in a front sliding mode, a second separation seat (20) of the die fixing seat (1) is inserted with a second tube seat (15) in a front sliding mode, a positioning sleeve (13) is fixedly connected to the inside of the first tube seat (14), and a positioning inner tube (12) is fixedly connected to the inside of the second tube seat (15).

4. The automobile stamped steel plate die convenient to separate of claim 3, wherein: the inner bottom of the first pipe seat (14) and the inner bottom of the second pipe seat (15) are integrally formed with a fixed base (25), and the positioning sleeve (13) and the positioning inner pipe (12) are fixedly connected to the inner portions of the first pipe seat (14) and the second pipe seat (15) through the fixed base (25).

5. The automobile stamped steel plate die convenient to separate of claim 4, wherein: locking bolt (22) are installed to the equal screw thread in upper portion of first separation seat (19) and second separation seat (20) of die fixing base (1), the upper portion fixedly connected with bolt fixing base (23) of first tube socket (14) and second tube socket (15), the upper portion at bolt fixing base (23) is installed to locking bolt (22) screw thread.

6. The automobile stamped steel plate die convenient to separate of claim 5, wherein: the internal thread hole that is used for cooperation locking bolt (22) is seted up on the upper portion of bolt fixing base (23), counter sink (21) have all been seted up on first separation base (19) and the second separation base (20) of die fixing base (1), locking bolt (22) run through counter sink (21) screw thread and install on bolt fixing base (23).

7. The automobile stamped steel plate die convenient to separate of claim 5, wherein: the bolt fixing device is characterized in that inserting grooves (11) used for inserting the first tube seat (14) and the second tube seat (15) are formed in the first separating seat (19) and the second separating seat (20), and fixing seat inserting grooves (18) used for inserting the bolt fixing seats (23) are formed in the first separating seat (19) and the second separating seat (20).

8. The automobile stamped steel plate die convenient to separate of claim 1, wherein: the equal fixedly connected with reference column (16) in outside portion of die (2) left side die and right die, the outside portion of first separation seat (19) and second separation seat (20) all is provided with constant head tank (17), die (2) left side die and right die all cooperate constant head tank (17) fixed connection through reference column (16) in the bottom of first separation seat (19) and second separation seat (20).

9. A manufacturing process using the easy-to-separate automobile stamped steel plate die of claim 1, wherein: the method comprises the following steps: