Die for synchronous hot stamping of coated board and bare board

Abstract

The utility model relates to the technical field of metal processing, in particular to a die for synchronous hot stamping of a coated plate and a bare plate, which comprises a lower die and an upper die corresponding to the lower die, the lower die comprises a die holder, a bare plate male die and a coated plate male die, and the bare plate male die and the coated plate male die are arranged above the die holder. A partition plate is arranged between the bare board male die and the coated board male die, and the top end of the partition plate is higher than the highest point of the molded surface of the bare board male die. Through the mode that the partition plate is arranged between the bare board male die and the coated board male die, the probability that oxide skin on the surface of bare board base metal enters the surface of the coated board male die in the production process of the bare board hot stamping part can be effectively reduced, damage of the oxide skin of the bare board to the coated board hot stamping part and the coated board male die is reduced, and the production efficiency of the coated board hot stamping part is improved. And the quality and the cost can be effectively controlled, mixed hot stamping of the bare board hot stamping part and the coated board hot stamping part is achieved, the die opening cost is effectively saved, the technological process of the hot stamping part is simplified, and the production efficiency of the hot stamping part is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal processing technical field especially relates to a mould for coating plate and bare plate synchronous hot stamping. BACKGROUND

[0002] In the hot stamping process, according to the different process requirements, the base material usually adopts bare plate (steel plate without plating layer / coating layer) and coating plate (steel plate with plating layer / coating layer on the surface), and the produced stamping parts are bare plate hot stamping parts and coating plate hot stamping parts respectively, due to the different gas atmosphere and dew point in the required heating furnace, the important defects of the two kinds of parts are respectively caused by oxidation scale and hydrogen embrittlement, and the two kinds of parts cannot be produced simultaneously.

[0003] In the prior art, when producing bare plate hot stamping parts and coating plate hot stamping parts, the base material is usually heated separately, and separate molds are used for processing, so the production efficiency is low, and the mold cost is high.

[0004] In the Chinese patent document with publication number CN118162532A, a method for hot stamping silicon aluminum coating plate and bare plate common production is disclosed, which proposes a technical scheme of mixing heating of coating plate and bare plate in a heating furnace, to solve the problem of low efficiency when different types of base materials need to be heated separately, and to solve the problem of simultaneous production of stamping base materials before being sent into the hot stamping mold, although the production efficiency of hot stamping parts has been improved to a certain extent, the problem of increasing mold opening cost and low production efficiency caused by the need to open the mold separately and use separate molds for processing when producing bare plate hot stamping parts and coating plate hot stamping parts has not been solved, and in the prior art, if mixed production is used, the oxidation scale generated during the processing of bare plate hot stamping parts will enter the coating plate mold cavity, causing poor quality of the coating plate hot stamping parts, and also causing the abrasion of the coating plate mold, resulting in increased mold maintenance cost, therefore, it is impossible to use one mold to produce bare plate hot stamping parts and coating plate hot stamping parts simultaneously, and further improvement is needed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a mold for coating plate and bare plate synchronous hot stamping, which integrates the production of bare plate hot stamping parts and coating plate hot stamping parts on the same mold, reduces the mold opening cost of hot stamping parts, and improves the production efficiency of hot stamping parts.

[0006] To solve the above technical problems, the embodiment of the utility model provides a technical scheme as follows:

[0007] A mold for coating plate and bare plate synchronous hot stamping, comprising a lower mold and an upper mold corresponding to the lower mold, the lower mold comprising a mold base, a bare plate punch and a coating plate punch arranged above the mold base, a partition plate arranged between the bare plate punch and the coating plate punch, and the top end of the partition plate being higher than the highest point of the profile of the bare plate punch.

[0008] Further, the convex model surface of the coated plate is higher than the convex model surface of the bare plate.

[0009] Further, the top end of the partition plate is higher than the highest point of the model surface of the coated plate convex die.

[0010] Further, the bare plate convex die and the coated plate convex die are provided with a plurality of air blowing devices.

[0011] Further, the air blowing device is provided with an air pipe nozzle, and the air pipe nozzle is made of copper pipe.

[0012] Further, the surface of the bare plate convex die and the coated plate convex die is provided with a wear-resistant coating.

[0013] Further, the wear-resistant coating is processed by PVD process.

[0014] Further, the wear-resistant coating is processed by laser cladding process.

[0015] Further, a guide device is vertically fixed above the die holder, and the guide device is a guide column or a guide sleeve.

[0016] Compared with the prior art, the die for synchronous hot stamping of coated plates and bare plates provided by the utility model is characterized in that the bare plate convex die and the coated plate convex die are arranged on the same die holder, the production of the bare plate hot stamping part and the coated plate hot stamping part is integrated on the same die, and the bare plate convex die and the coated plate convex die are arranged in the mode of being provided with a partition plate therebetween, so that the probability of the surface oxide scale of the bare plate hot stamping part entering the surface of the coated plate convex die in the production process of the bare plate hot stamping part by the bare plate convex die can be effectively reduced, the quality and cost can be effectively controlled, the mixed hot stamping of the bare plate hot stamping part and the coated plate hot stamping part is realized, the die opening cost can be effectively saved by arranging the bare plate convex die and the coated plate convex die on the same die holder, the process flow of the hot stamping part is simplified, and the production efficiency of the hot stamping part is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these example are not intended to limit the embodiments, the elements with the same reference numerals in the figures represent similar elements, unless otherwise specified, the figures in the drawings do not constitute a proportional limit.

[0018] Figure 1 is a three-dimensional structure schematic diagram of the die for synchronous hot stamping of coated plates and bare plates in the utility model embodiment;

[0019] Figure 2 is a three-dimensional structure schematic diagram of the lower die;

[0020] Figure 3is the lower mold main view for the embodiment of the utility model;

[0021] Figure 4 is attached Figure 2 the local part A enlarged view.

[0022] Mark explanation: 10, lower mold;20, upper mold;1, mold base;2, bare board punch;3, coating plate punch;4, blowing device;41, air pipe nozzle;5, baffle;6, guide device. Specific implementation

[0023] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following will be combined with the drawings to the each embodiment of the utility model detailedly described.The ordinary skill in the art can understand that, in each embodiment of the utility model, in order to make the reader better understanding of the present application and proposed many technical details.But, even without these technical details and based on the various changes and modifications of each embodiment, the technical scheme claimed by each claim of the present application can be realized.

[0024] As Figures 1-4 The utility model discloses an embodiment relates to a kind of mould for coating plate and bare plate synchronous hot stamping, including lower mold 10 and the upper mold 20 corresponding with the lower mold 10 setting, the lower mold 10 includes mold base 1, and bare board punch 2 and coating plate punch 3 are set to the upper of mold base 1, bare board punch 2 and coating plate punch 3 between being equipped with baffle 5, the top end of baffle 5 is higher than the highest point of the profile of bare board punch 2.Bare board punch 2 is used for the processing of bare plate hot stamping piece, and coating plate punch 3 is used for the processing of coating plate hot stamping piece.By bare board punch 2 and coating plate punch 3 are set on the same mold base 1, and by the way that bare board punch 2 and coating plate punch 3 between being equipped with baffle 5, the probability that its bare plate base material surface oxide scale enters the surface of coating plate punch 3 during using bare board punch 2 to produce bare plate hot stamping piece can be effectively reduced, bare plate oxide scale is reduced to coating plate hot stamping piece itself and its coating plate punch 3 The damage of bare plate oxide scale, quality and cost can be effectively controlled, realize the mixed hot stamping of bare plate hot stamping piece and coating plate hot stamping piece, by bare board punch 2 and coating plate punch 3 are set on the same mold base 1, can effectively save the cost of opening mould, simplify the process flow of hot stamping piece, improve the production efficiency of hot stamping piece.

[0025] In one embodiment, a die for simultaneous hot stamping of coated sheet and bare sheet is disclosed, comprising a die seat 1, and a bare sheet punch 2 and a coated sheet punch 3 arranged above the die seat 1, the coated sheet punch 3 has a higher profile than the bare sheet punch 2. Preferably, the coated sheet punch 3 has a higher profile than the bare sheet punch 2 by 50-150 mm, the top end of the partition 5 is higher than the highest point of the profile of the coated sheet punch 3. By arranging the coated sheet punch 3 to have a higher profile than the bare sheet punch 2, the probability of the bare sheet scale falling onto the surface of the coated sheet punch 3 is further reduced.

[0026] In one exemplary embodiment, a die for simultaneous hot stamping of coated sheet and bare sheet is disclosed, the die seat 1 is provided with a coated sheet punch 3 and two bare sheet punches 2, the coated sheet punch 3 is arranged across the bare sheet punches 2, i.e. the two bare sheet punches 2 are arranged on the two sides of the coated sheet punch 3, and a partition 5 is arranged between the bare sheet punch 2 and the coated sheet punch 3. By arranging multiple punches, the production efficiency of the hot stamped part can be effectively improved, and the cost of opening the die is reduced. In other embodiments, the die seat 1 is provided with one or more coated sheet punches 3 and one or more bare sheet punches 2, and a partition 5 is arranged between the bare sheet punch 2 and the coated sheet punch 3. By arranging the partition 5, the damage of the bare sheet scale to the coated sheet hot stamped part itself and the coated sheet punch 3 is reduced. By integrating one or more coated sheet punches 3 and one or more bare sheet punches 2, the production process can be more effectively coordinated, the hot working die can be arranged, the cost of opening the die can be effectively reduced, and the production efficiency of the hot stamped part can be further improved. By integrating one coated sheet punch 3 and two bare sheet punches 2, compared with the prior art, the cost of opening a pair of dies is saved, the die cost is reduced by 50%, the overall die changing time is reduced by 50%, the storage space of the die is saved, the coated sheet hot stamped part and the bare sheet hot stamped part are balanced in terms of punching frequency, which is beneficial to the saving of equipment and the improvement of production efficiency, and the production cost is reduced.

[0027] In one embodiment, a die for simultaneous hot stamping of coated sheet and bare sheet is disclosed, comprising a die seat 1, and a bare sheet punch 2 and a coated sheet punch 3 arranged above the die seat 1, the bare sheet punch 2 and the coated sheet punch 3 are provided with a plurality of air blowing devices 4. By the air blowing devices 4, the detached scale can be further blown away from the punch, and the damage of the scale adhered to the punch to the die and the quality of the hot stamped part is reduced. Preferably, the air blowing device 4 is provided with an air pipe nozzle 41, and the air pipe nozzle 41 is made of copper pipe. Since copper has good corrosion resistance and pressure resistance, the copper pipe as the material of the air pipe nozzle can not only ensure the stability and safety of gas delivery, but also reduce the long-term use cost.

[0028] In one embodiment, a die for synchronous hot stamping of coated and bare plates comprises a die seat 1, and a bare plate punch 2 and a coated plate punch 3 arranged above the die seat 1, in order to increase the die durability, reduce the maintenance frequency, and reduce the maintenance cost, all the punches are surface treated, that is, wear-resistant coatings are arranged on the surfaces of the bare plate punch 2 and the coated plate punch 3 to increase the surface hardness and wear resistance. The wear-resistant coatings can be processed by a PVD (Physical Vapor Deposition) process or a laser cladding process. By arranging the wear-resistant coatings, the hardness and wear resistance of the die are effectively increased, the probability of oxide scale adhesion or embedding into the bare plate punch 2 and the coated plate punch 3 is prevented to a certain extent, and the surface quality of the hot stamped part is effectively improved.

[0029] In one embodiment, a die for synchronous hot stamping of coated and bare plates comprises a die seat 1, and a bare plate punch 2 and a coated plate punch 3 arranged above the die seat 1, in order to increase the die durability, reduce the maintenance frequency, and reduce the maintenance cost, all the punches are surface treated, that is, wear-resistant coatings are arranged on the surfaces of the bare plate punch 2 and the coated plate punch 3 to increase the surface hardness and wear resistance. The wear-resistant coatings can be processed by a PVD (Physical Vapor Deposition) process or a laser cladding process. By arranging the wear-resistant coatings, the hardness and wear resistance of the die are effectively increased, the probability of oxide scale adhesion or embedding into the bare plate punch 2 and the coated plate punch 3 is prevented to a certain extent, and the surface quality of the hot stamped part is effectively improved.

[0030] The die for synchronous hot stamping of coated and bare plates provided by the utility model has the advantages that, compared with the prior art, the bare plate punch and the coated plate punch are arranged on the same die seat, the production of the bare plate hot stamped part and the coated plate hot stamped part is integrated on the same die, and the bare plate punch and the coated plate punch are arranged in a way that a partition plate is arranged between the bare plate punch and the coated plate punch, so that the probability of the surface oxide scale of the bare plate punch entering the surface of the coated plate punch during the production of the bare plate hot stamped part by the bare plate punch is effectively reduced, the quality and cost can be effectively controlled, mixed hot stamping of the bare plate hot stamped part and the coated plate hot stamped part is realized, the die opening cost is effectively saved by arranging the bare plate punch and the coated plate punch on the same die seat, the process flow of the hot stamped part is simplified, and the production efficiency of the hot stamped part is improved.

[0031] Those skilled in the art can understand that the above embodiments are specific embodiments for implementing the utility model, and various changes can be made in form and details in actual application without departing from the spirit and scope of the utility model.

Claims

1. A die for simultaneous hot stamping of coated and bare sheets, characterized in that, The mould comprises a lower mould (10) and an upper mould (20) arranged correspondingly to the lower mould (10), the lower mould (10) comprises a mould base (1), a bare board punch (2) and a coating board punch (3) arranged above the mould base (1), a partition plate (5) is arranged between the bare board punch (2) and the coating board punch (3), and the top end of the partition plate (5) is higher than the highest point of the profile of the bare board punch (2).

2. The die for simultaneous hot stamping of coated and bare sheets according to claim 1, characterized in that, The profile of the coating board punch (3) is higher than the profile of the bare board punch (2).

3. The die for simultaneous hot stamping of coated and bare sheets according to claim 2, characterized in that, The top end of the partition plate (5) is higher than the highest point of the profile of the coating board punch (3).

4. The die for simultaneous hot stamping of coated and bare sheets according to claim 1, characterized in that, A plurality of air blowing devices (4) are arranged around the bare board punch (2) and the coating board punch (3).

5. The die for simultaneous hot stamping of coated and bare sheets according to claim 4, characterized in that, The air blowing device (4) is provided with an air pipe nozzle (41) made of copper pipe.

6. The die for simultaneous hot stamping of coated and bare sheets according to claim 1, characterized in that, The surface of the bare board punch (2) and the coating board punch (3) is provided with a wear-resistant coating.

7. The die for simultaneous hot stamping of coated and bare sheets according to claim 6, characterized in that The wear-resistant coating is processed by PVD process.

8. The die for simultaneous hot stamping of coated and bare sheets according to claim 6, characterized in that, The wear-resistant coating is processed by laser cladding process.

9. A die for simultaneous hot stamping of coated and bare sheets according to any of claims 1-8, characterized in that, A guide device (6) is vertically fixed above the mould base (1), and the guide device (6) is a guide column or a guide sleeve.

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