Trial-production automobile thermal forming die with circulating water cooling structure
Technical Field
The utility model relates to a thermoforming mould especially relates to a trial-production car thermoforming mould with circulating water cooling structure.
Background
In the trial-manufacture automotive industry, the thermoforming process generally comprises: and (2) feeding the plate into a heating furnace, heating for 300s to heat the plate to 920-950 ℃, taking the plate out of a hearth, quickly placing the plate into a die, quickly dropping and stamping the plate in the die for 3-5s by using a press, cooling and quenching the plate in the die, taking out the part, placing a laser cutting tool for trimming, detecting and delivering. In general, the thermoforming principle is the same, the mould practice is different, and the obvious difference appears in mould structure, cost and process.
The cooling mode basically adopts natural cooling of the mould, watering cooling of the mould, air cooling and the like, and also has a method of cooling water in a weight-reducing cavity of the mould; with the cooling methods, the temperature of the die is higher and higher along with the time, so that the appearance of the part is poor, and the formability and the precision of the part are reduced; the cooling time is prolonged, the production efficiency is low, and continuous stamping cannot be met; the specific disadvantages are as follows:
sprinkling water for cooling: water residue exists on the die, so that the temperature change of the plate is different, the performance is different and the plate is unstable when the die is quenched; and the time efficiency is not very high, the mold will still rise quickly after a while.
Air cooling: the time is long, the efficiency is slow, the temperature of the die still rises quickly in summer, and the quenching speed of the plate in the die is also slow.
Water is filled in the weight-reducing cavity of the mold: the die can actually realize cooling and can also quench the plate in the die, but the die is limited by the technical scheme, because the lower vehicle body part is not subjected to cold stamping and then hot stamping, the part of the lower vehicle body is difficult to realize, the mode can not be applied to all parts of hot forming, and in addition, the actual temperature change of the die can not be judged.
The method of arranging the precise water channel like a mass production mould is also adopted, but the design period is longer and the manufacturing cost is high. Therefore, the prior art has yet to be improved.
Disclosure of Invention
The utility model aims to solve the technical problem that a trial-production car thermoforming mould with circulating water cooling structure is provided, deploys simple and easy water course, through water circulative cooling, makes the mould temperature rise slowly, keeps a lower value, and the hot stamping sheet material rapid cooling of being convenient for quenches.
The technical scheme that the utility model adopts for solving the above technical problems is to provide a trial-manufacture automobile thermal forming mould with a circulating water cooling structure, which comprises an upper mould and a lower mould matched with the upper mould, wherein cooling cavities are arranged in the upper mould and the lower mould, the upper mould is provided with an upper mould backing plate, and the upper mould backing plate seals the cooling cavities of the upper mould; the lower die is provided with a lower die base plate, and the lower die base plate seals a cooling cavity of the lower die; the side of going up mould and lower mould all is equipped with water injection hole and apopore, water injection hole and apopore form the cooling water course with cooling die cavity intercommunication.
Furthermore, the upper die is provided with a sealing groove on the contact surface with the upper die base plate, and a sealing glue is arranged in the sealing groove.
Furthermore, a sealing groove is formed in the contact surface of the lower die and the lower die base plate, and a sealing glue is arranged in the sealing groove.
Furthermore, a reinforcing rib is arranged in the cooling cavity, the cooling cavity is divided into a plurality of cooling grooves by the reinforcing rib, the reinforcing rib is provided with a through hole, and the cooling grooves are communicated through the through hole.
Furthermore, the upper die is fixedly installed through an upper die base plate, and the lower die is fixedly installed through a lower die base plate.
Furthermore, the water injection hole and the water outlet hole are respectively arranged at the opposite corners of the upper die/the lower die.
Furthermore, the water injection hole is connected with a water injection valve, the water outlet hole is connected with a water outlet valve, and the water injection valve and the water outlet valve are connected to a water circulation system.
The utility model discloses contrast prior art has following beneficial effect: the utility model provides a trial-production car thermoforming mould with circulating water cooling structure has following advantage: 1. the simple water channel is arranged, the design period is short compared with a precise water channel, and the manufacturing cost is reduced; 2. the simple water channel is suitable for molds of various parts and meets the requirement of part diversity; 3. the flow type water injection mode is adopted, water is changed circularly to cool, the cooling effect is good, the temperature of the die rises slowly, a lower temperature value is kept, and the function and the quality of the thermal forming die can be realized as the same as those of mass production; 4. the continuous stamping is realized, the efficiency is improved, the application of small-batch production is met, and the time cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a trial-manufacture automobile thermal forming mold with a circulating water cooling structure according to the present invention;
fig. 2 is the schematic diagram of the upper die structure of the present invention.
In the figure:
1. an upper die base plate; 2. an upper die; 3. a water injection hole; 4. a water outlet hole; 5. a lower die; 6. a lower die base plate; 7. cooling the cavity; 8. reinforcing ribs; 9. a through hole; 10. sealing the groove.
Detailed Description
The invention is further described with reference to the following figures and examples.
Fig. 1 is the utility model discloses trial-manufacture car thermoforming mould structure schematic diagram with circulating water cooling structure.
Referring to fig. 1, the trial-manufacture automobile thermal forming mold with the circulating water cooling structure provided by the utility model comprises an upper mold 2 and a lower mold 5 matched with the upper mold, wherein both the upper mold 2 and the lower mold 5 are provided with cooling cavities 7, the upper mold 2 is provided with an upper mold liner plate 1, and the upper mold liner plate 1 seals the cooling cavities 7 of the upper mold 2; the lower die 5 is provided with a lower die base plate 6, and the lower die base plate 6 seals a cooling cavity 7 of the lower die 5; go up the side of mould 2 and lower mould 5 and all be equipped with water injection hole 3 and apopore 4, water injection hole 3 and apopore 4 communicate with cooling die cavity 7 and form the cooling water course.
Referring to fig. 2, in the trial-manufacture automobile thermal forming mold with the circulating water cooling structure provided by the present invention, a sealing groove 10 is formed on a contact surface of the upper mold 2 and the upper mold base plate 1, and a sealant is arranged in the sealing groove 10; the lower die 5 is provided with a sealing groove 10 on the contact surface with the lower die base plate 6, and a sealant is arranged in the sealing groove 10, so that the sealing effect is ensured, and the cooling water is prevented from seeping.
With continuing reference to fig. 2, the cooling cavity 7 of the trial-manufacture automobile thermal forming mold with the circulating water cooling structure provided by the utility model is provided with the reinforcing ribs 8, so as to ensure the strength of the mold and the stamping effect; the strengthening rib 8 is separated cooling die cavity 7 for a plurality of cooling bath, the strengthening rib 8 is equipped with through-hole 9, and is a plurality of the cooling bath passes through-hole 9 intercommunication, guarantees the evenly distributed of cooling water, guarantees the cooling effect.
Specifically, the upper die 2 is fixedly installed through the upper die base plate 1, and the lower die 5 is fixedly installed through the lower die base plate 6, so that the die is fastened and clamped conveniently.
Preferably, water injection hole 3 and apopore 4 set up respectively in the relative corner of last mould 2/lower mould 3, let the cooling water fully flow through cooling die cavity 7, and the cooling is effectual.
Specifically, water injection hole 3 is connected with the water injection valve, apopore 4 is connected with the outlet valve, water injection valve and outlet valve are connected to water circulating system, and the temperature of cooling is controlled through the flow of control cooling water.
In summary, the trial-manufacture automobile thermal forming mold with the circulating water cooling structure provided by the utility model has the advantages that the simple water channel is arranged, the design period is short relative to the precise water channel, and the manufacturing cost is reduced; the simple water channel is suitable for molds of various parts and meets the requirement of part diversity; the flow type water injection mode is adopted, water is changed circularly to cool, the cooling effect is good, the temperature of the die rises slowly, a lower temperature value is kept, and the function and the quality of the thermal forming die can be realized as the same as those of mass production; the continuous stamping is realized, the efficiency is improved, the application of small-batch production is met, and the time cost is reduced.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.