Hot forming part production method of hot stamping production line
By installing water tanks and limiting columns on the thermoforming production line, the problems of complex and costly modification of existing hot bath processes have been solved, achieving high positioning accuracy and production stability of the billet in hot water, and reducing equipment costs and control complexity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-03-24
AI Technical Summary
The hot bath process modification of existing thermoforming production lines is complex and costly, making it impossible to achieve low-cost modification on traditional production lines without changing molds.
The conveyor rollers at the discharge port of the roller hearth furnace are removed from the hot forming production line. A water tank is installed and equipped with a lifting bracket and a limiting column. The billet is lifted by the lifting bracket and positioned by the limiting column to achieve the projection and positioning of the billet in the water tank. Finally, the billet is picked up by a robot for forming and quenching.
It achieves high positioning accuracy of billets in hot water and stable production cycle, reduces equipment costs and control complexity, and the modification is simple and does not increase process time.
Smart Images
Figure CN121718677A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of steel smelting production line, and particularly relates to a hot forming part production method of hot stamping production line. BACKGROUND
[0002] Hot forming high-strength steel parts are widely used due to their excellent mechanical properties and formability. The existing traditional hot forming production line mainly produces aluminum-silicon coated hot forming steel and bare plate hot forming steel, and the production steps are roller hearth heating, mechanical hand transfer and press forming.
[0003] Patent publication number (113751410 A) proposes a new high-strength steel hot bath forming process. The process immerses the plate into boiling water, uses the bubbles generated between the boiling water and the hot plate to uniformly and controllably remove the surface oxide layer, and accurately controls the forming temperature of the plate. Although this patent proposes a hot bath process, it does not provide a low-cost modification scheme suitable for traditional production lines without replacing the mold. Therefore, it is necessary to design a hot forming part production method of hot stamping production line to solve the problems of complex modification process and high modification cost of the existing hot bath process. SUMMARY
[0004] In view of the problems in the prior art, the purpose of the present application is to provide a hot forming part production method of hot stamping production line, which modifies the existing hot forming production line, so that the mass-produced mold can meet the hot bath condition and reduce the modification cost, and has very high application value.
[0005] The technical scheme adopted by the present application to solve its technical problems is: a hot forming part production method of hot stamping production line, comprising the following steps:
[0006] S1, hot bath modification: removing the conveying roller at the frontmost of the roller hearth discharge port, and installing a water tank below the removed conveying roller;
[0007] S2, installing a lifting bracket in the water tank, the lifting bracket holds and lifts the blank, and a limiting column is installed on the lifting bracket;
[0008] S3, the hot forming steel blank is heated to austenitization in the furnace, and then transported to the furnace opening by the conveying roller;
[0009] S4, the conveying roller group accelerates, the high-temperature blank is thrown forward, and after being stopped by the front limiting column, the outwardly inclined side limiting column positions the falling blank;
[0010] S5, the lifting bracket is raised upward, the blank is ejected out of the water surface, the blank is grabbed by the mechanical hand and transferred to the forming mold in the press for forming and quenching.
[0011] Specifically, the water tank in step S1 is used to hold an aqueous solution at a temperature higher than 80°C. The water tank is equipped with an electric heater and a temperature sensor, and the outer wall of the water tank is lined with insulation cotton.
[0012] Specifically, in step S2, the limiting posts are arranged in a row in front of the billet movement and a row behind the billet movement. The top of the limiting posts in front of the billet movement is higher than the billet, and the limiting posts behind the billet movement are inclined outward.
[0013] Specifically, the number and installation position of the limiting posts are adjusted according to the shape of the blank. Multiple sets of threaded holes are distributed on the lifting bracket. A single-hole flange is provided at the bottom of the limiting post. The limiting post is installed in any threaded hole and can rotate.
[0014] Specifically, the top of the limiting post is equipped with a buffer structure, and the angle between the limiting post and the water surface is 70°-90°.
[0015] Specifically, the entire billet is immersed in the aqueous solution for 1-8 seconds in step S4.
[0016] The present invention has the following beneficial effects:
[0017] The hot stamping production line designed in this invention provides a method for producing hot-formed parts. By partially modifying the existing hot forming production line, the process of immersing the blank in hot water is realized. The modification is simple and low-cost, and compared with the traditional hot stamping process, it does not increase the process time.
[0018] The hot stamping production line designed in this invention provides a method for producing thermoformed parts. It utilizes the existing roller conveyor power to achieve automatic blank throwing, eliminating the need for additional transfer robots and greatly reducing equipment costs and control complexity.
[0019] The hot stamping production line designed in this invention provides a method for producing thermoformed parts. By cooperating with the limiting column and the lifting bracket, the positioning accuracy of the blank in hot water is ensured, which facilitates the subsequent gripping by the robot and improves the stability of the production cycle. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the billet arrival state in the hot stamping production line for the production of thermoformed parts.
[0021] Figure 2 This is a schematic diagram of the billet being accelerated out during the production of thermoformed parts in a hot stamping production line.
[0022] Figure 3 This is a schematic diagram of the process for producing thermoformed parts in a hot stamping production line, showing the blank immersed in an aqueous solution.
[0023] Figure 4 This is a structural diagram of the blank and the limiting post.
[0024] Figure 5 This is a schematic diagram of the structure of the front limiting post for the movement of the billet.
[0025] Figure 6 This is a schematic diagram of the inclined limiting column behind the billet after it moves.
[0026] In the diagram: 1-Roller hearth furnace; 2-Transfer roller; 3-Bill; 4-Water tank; 5-Lifting bracket; 6-Limiting column. Detailed Implementation
[0027] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0028] like Figures 1-6 As shown, a method for converting a hot stamping production line to a hot bath includes the following steps:
[0029] 1. Remove the conveyor roller 2 at the front of the discharge port of the roller hearth furnace 1, and install a water tank 4 below the original conveyor roller 2. The water tank 4 is used to hold an aqueous solution with a temperature higher than 80°C. The water tank 4 is equipped with an electric heater and a temperature sensor. The electric heater is a pipe-type electric heater, and the outside of the water tank wall is equipped with heat insulation cotton.
[0030] 2. A lifting bracket 5 with lifting function is installed in the water tank for holding and lifting the billet 3; the top of the lifting bracket 5 is connected to the cylinder rod of a pneumatic or hydraulic cylinder, and the cylinder body of the pneumatic or hydraulic cylinder is installed on the support frame on both sides above the water tank 4.
[0031] 3. Install limiting posts 6 on the lifting bracket 5 to restrict the movement of the billet 3. The number and installation position of the limiting posts 6 are adjusted according to the shape of the billet 3. The lifting bracket 5 has multiple sets of threaded holes, and the bottom of the limiting posts 6 is equipped with a single-hole flange, such as... Figure 1 As shown, the limiting post 6 is installed in any threaded hole and rotates.
[0032] The limiting posts 6 are arranged in a row in front of the billet movement and a row behind the billet movement. The top of the limiting posts 6 in front of the billet movement is higher than the billet 3, and the limiting posts 6 in the rear of the billet movement are inclined outward.
[0033] The top of the limiting post 6 is equipped with a buffer structure made of rubber to reduce scratches and impact on the blank.
[0034] The angle between the limiting column and the water surface is 70°-90°, which restricts the horizontal movement of the billet 3 while achieving a smooth "projection-positioning-falling" action.
[0035] In another embodiment, the limiting post 6 can be installed independently at the bottom of the water tank 4 without interfering with the lifting bracket 5.
[0036] A production process for thermoformed parts using the modified production line described above:
[0037] 1. After the hot-formed steel billet 3 is heated to austenitization in the furnace, it is transported to the furnace mouth of the roller hearth furnace 1 by the conveyor roller 2.
[0038] 2. The conveyor rollers accelerate, and the high-temperature billet 3 is thrown forward. After being blocked by the front limiting post 6, the outwardly tilted side limiting post 6 gradually positions the falling billet 3. The billet 3 is submerged in water for 1-8 seconds.
[0039] 3. The lifting bracket 5 rises upward, the billet 3 is pushed out of the water surface, the robotic arm grabs the billet, and transfers it to the forming mold in the press for forming and quenching.
[0040] This invention achieves the process of immersing the blank in hot water by partially modifying the existing thermoforming production line. The modification is simple and low-cost. Moreover, compared with the traditional hot stamping process, it does not increase the process time.
[0041] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.
[0042] The technologies, shapes, and structures not described in detail in this invention are all known technologies.
Claims
1. A method for producing hot-formed parts on a hot stamping production line, characterized in that, Includes the following steps: S1. Hot bath transformation: Remove the conveyor roller at the front of the discharge port of the roller hearth furnace and install a water tank below the removed conveyor roller; S2. A lifting bracket is installed in the water tank. The lifting bracket holds and lifts the billet. Limiting posts are installed on the lifting bracket. S3. After the hot-formed steel billet is heated to austenitization in the furnace, it is transported to the furnace mouth by conveyor rollers. S4. The conveyor roller group accelerates, and the high-temperature billet is thrown forward. After being blocked by the front limiting post, the outwardly inclined side limiting post positions the falling billet. S5. The lifting bracket rises upward, the billet is pushed out of the water, the robot grabs the billet and transfers it to the forming mold in the press for forming and quenching.
2. The method for producing hot-formed parts on a hot stamping production line according to claim 1, characterized in that, The water tank in step S1 is used to hold an aqueous solution at a temperature higher than 80°C. The water tank is equipped with an electric heater and a temperature sensor, and the outer wall of the water tank is lined with insulation cotton.
3. The method for producing hot-formed parts on a hot stamping production line according to claim 1, characterized in that, In step S2, the limiting posts are arranged in a row in front of the billet movement and a row behind the billet movement. The top of the limiting posts in front of the billet movement is higher than the billet, and the limiting posts behind the billet movement are inclined outward.
4. The method for producing hot-formed parts on a hot stamping production line according to claim 3, characterized in that, The number and installation position of the limiting posts are adjusted according to the shape of the blank. Multiple sets of threaded holes are distributed on the lifting bracket. A single-hole flange is provided at the bottom of the limiting post. The limiting post is installed in any threaded hole and can rotate.
5. The method for producing hot-formed parts on a hot stamping production line according to claim 3, characterized in that, The top of the limiting post is equipped with a buffer structure, and the angle between the limiting post and the water surface is 70°-90°.
6. The method for producing hot-formed parts on a hot stamping production line according to claim 1, characterized in that, The time for the entire billet to be immersed in the aqueous solution in step S4 is 1-8 seconds.