CN-224222542-U - Gap-adjustable hot forming flat plate die

CN224222542UCN 224222542 UCN224222542 UCN 224222542UCN-224222542-U

Abstract

The utility model discloses a gap-adjustable hot forming flat plate die which comprises an upper die and a lower die, wherein the upper die is provided with an upper die holder and an upper insert, the lower die is provided with a lower die holder and a lower insert, the upper insert and the lower insert are respectively connected with the upper die holder and the lower die holder through bolts, the lower die is also provided with a lower movable block and an adjusting gasket, the lower insert is divided into a high side part and a low side part, the high side part is higher than the low side part, and the lower movable block and the adjusting gasket are detachably and sequentially arranged on the upper part of the low side part from top to bottom. The gap-adjustable hot forming flat plate die not only can realize flat plate hot forming of the equal-thickness high-strength steel plate, but also can realize flat plate hot forming of different-thickness laser splice welding plates with different thickness differences for early process fumbling, and can realize hot forming on the same die without separately manufacturing corresponding dies and frequently changing the dies, thereby having wide application range, reducing production cost and die changing frequency and improving production efficiency.

Inventors

ZHOU JUN
WANG KAI
YU PENG
CHEN XIAOXU

Assignees

国汽轻量化(江苏)汽车技术有限公司

Dates

Publication Date: 20260512
Application Date: 20250516

Claims (6)

1. The hot forming flat plate die with adjustable gap comprises an upper die and a lower die, wherein the upper die is provided with an upper die holder and an upper insert, the lower die is provided with a lower die holder and a lower insert, the upper insert and the lower insert are respectively connected with the upper die holder and the lower die holder through first bolts, the hot forming flat plate die is characterized in that, The lower die is further provided with a lower movable block and an adjusting gasket, the lower insert is divided into a high side part and a low side part, the high side part is higher than the low side part, and the lower movable block and the adjusting gasket are detachably and sequentially installed on the upper part of the low side part from top to bottom.
2. The gap-adjustable thermoforming platen die of claim 1 wherein a groove is provided in the upper surface at the interface of the high side portion and the low side portion.
3. The gap-adjustable thermoforming platen die of claim 1 wherein the lower movable block and the adjustment shim are mounted on top of the lower side portion by a second bolt.
4. The gap-adjustable thermoforming flat sheet die as claimed in claim 1, wherein straight holes are respectively formed at four corners of a lower portion of the upper insert and four corners of an upper portion of the lower insert to correspond to each other, and two straight holes corresponding to a lower side portion of the lower insert and through holes having the same diameter are respectively formed at the lower movable block and the adjustment pad, and positioning pins are respectively inserted into the corresponding straight holes and through holes at each corner.
5. The gap-adjustable thermoforming plate mold of claim 1, wherein vertical plunger holes are respectively machined in the upper portion of the high side portion of the lower insert and the lower movable block, each plunger hole having a plunger inserted therein.
6. The gap-adjustable thermoforming flat sheet die of claim 1, wherein side threaded holes are respectively provided in the sides of the upper die base and the lower die base, and a third bolt is installed in the side threaded holes.

Description

Gap-adjustable hot forming flat plate die Technical Field The utility model relates to the technical field of hot forming of high-strength steel flat plates for early process fumbling, in particular to a gap-adjustable hot forming flat plate die for unequal-thickness high-strength steel laser tailor-welded blanks. Background Thermoforming techniques have found wide application and in the course of fumbling with thermoforming process parameters, sheet thermoforming trials are very important, where thermoforming sheet molds are the key device to ensure trial quality. At present, in the traditional hot forming flat plate die technology, the molded surfaces of the dies are flat, and flat plate hot forming of the equal-thickness high-strength steel plate can only be realized for early technological fumbling. However, with the development of thermoforming technology, laser tailor welded blanks of unequal thickness are increasingly being used. The unequal-thickness laser welding plate is formed by connecting two or more high-strength steel plates with different thicknesses together in a laser welding mode, and the traditional hot forming flat plate die cannot meet the process fumbling requirement of the unequal-thickness laser welding plate due to the characteristic that the molded surface of the traditional hot forming flat plate die is a plane (besides the process fumbling of the plate, the process fumbling is also required for welding seams of the laser welding). Meanwhile, as the high-strength steel plates with different thicknesses are welded together, the thickness differences of the plates among the laser welding plates with different thicknesses are different, if the corresponding hot forming flat plate dies are respectively manufactured for the laser welding plates with different thicknesses, the production cost is increased, and the production efficiency is reduced due to frequent die replacement. Therefore, how to realize the flat plate thermoforming of the laser tailor-welded blanks with different thickness differences is used for early process searching, so as to overcome the defects of limited application and the like of the traditional thermoforming flat plate die, and the flat plate thermoforming method is an urgent problem to be solved in the field. In view of the foregoing, there is a need in the art for a hot forming flat mold capable of realizing flat hot forming of laser tailor welded blanks with different thickness differences for advanced process investigation, so as to reduce production cost and improve production efficiency. Disclosure of utility model In view of the above, an object of the embodiments of the present utility model is to provide a gap-adjustable hot forming flat die, which can solve the problems of limited application and the like of the existing hot forming flat die, and realize flat hot forming of laser tailor-welded blanks with different thickness differences for early process fumbling, thereby reducing production cost and improving production efficiency. In view of the above object, an aspect of the embodiments of the present utility model provides a gap-adjustable thermoforming flat mold, comprising an upper mold and a lower mold, the upper mold is provided with an upper mold base and an upper insert, the lower mold is provided with a lower mold base and a lower insert, the upper insert and the lower insert are respectively connected with the upper mold base and the lower mold base through first bolts, The lower die is further provided with a lower movable block and an adjusting gasket, the lower insert is divided into a high side part and a low side part, the high side part is higher than the low side part, and the lower movable block and the adjusting gasket are detachably and sequentially installed on the upper part of the low side part from top to bottom. The above-described gap-adjustable thermoforming flat sheet die is preferably provided with grooves on the upper surface at the interface of the high side portion and the low side portion. The above-described gap-adjustable thermoforming flat mold, preferably, the lower movable block and the adjustment washer are mounted on the upper portion of the lower side portion by a second bolt. In the above-mentioned gap-adjustable thermoforming flat plate mold, preferably, straight holes are respectively formed at four corners of the lower portion of the upper insert and four corners of the upper portion of the lower insert in correspondence with each other, and two straight holes corresponding to the lower side portion of the lower insert and through holes having the same diameter are respectively formed at the lower movable block and the adjustment pad, and positioning pins are respectively inserted into the corresponding straight holes and through holes at each corner. In the above-described gap-adjustable thermoforming flat mold, preferably, vertical plunger holes are respectively formed in the upper portion of the hig