Automobile cross beam pressing die

Abstract

The application discloses a kind of automobile beam pressing mould, including upper die assembly and lower die assembly, the lower die assembly includes sequentially fixed connection from bottom to top lower die seat, lower die cushion table and lower die table, the top end central position of lower die table is fixed with lower female die by bolting, double-inclined groove self-resetting correction structure is symmetrically arranged on the lower die table left and right sides of lower female die, double-inclined groove self-resetting correction structure is embedded with gas type blowing piece structure, the outer wall of the side of lower die table is also provided with mold site induction mechanism, the cavity for the activity of double-inclined groove self-resetting correction structure is provided between lower female die, lower die table.The application is only needed to perform extensive feeding and final pick-up when using, two key nodes of positioning and demolding are automatically completed by mold itself through mechanical and pneumatic logic automation, both retain the flexible flexibility of manual feeding, avoid high investment and complex debugging of executing component, reduce the dependence of production line on operator experience and labor intensity.

Description

Technical Field

[0001] This invention relates to the field of pressing mold technology, specifically to a pressing mold for automobile crossbeams. Background Technology

[0002] As a key skeletal component of the vehicle chassis, the crossbeam of an automobile forms a closed ring frame by connecting the left and right longitudinal beams laterally, which improves the rigidity of the whole vehicle in terms of torsion and bending and ensures the stability of the driving posture. At present, the crossbeam is widely formed by cold stamping of steel plate. The blank is cut into a sheet with a specified outline, and then under the drive of the press, the upper die punch and the lower die die violently extrude the blank, causing the metal to plastically flow and conform to the die surface. Then, the trimming is completed in sequence to remove the wavy flash, punching is completed to make mounting and weight reduction holes, and finally the springback distortion is eliminated by flanging and shaping. During the stamping operation, the sheet metal is supported with both hands and placed into the lower die positioning pin. After confirming that it is in place, the double start buttons on both sides of the control panel must be pressed simultaneously. This safety design forces both hands to stay away from the danger zone. The press then completes one stamping cycle with a rapid descent, slow pressurization, and rapid return. After the return stroke, the operator uses a suction cup or a special part-removing hook to remove the forming beam and place it on a fixture or conveyor belt. During this process, the operator needs to manually position and adjust the position of the sheet metal on the lower die. If there is even a slight deviation, the width of the sheet metal flowing into the die cavity radius on the left and right sides will differ, resulting in material on the wider side... The material is subjected to excessive compression due to excess material on the excess side and excessive stretching due to insufficient material on the narrow side. The strain paths of the metal on both sides are completely different, and the corresponding cold work hardening degree and residual stress distribution are also significantly asymmetrical. After the press unloads and returns, the elastic recovery on both sides is inconsistent, resulting in a low product qualification rate. If an electric centering mechanism is used, it is difficult to integrate it into the opening and closing action of the stamping die. Moreover, during subsequent material removal, the crossbeam and the die form a friction self-lock due to the extremely high contact pressure. The operator needs to use tools to pry it out. During operation, it is very easy to leave indentations and scratches on the side wall, and it will greatly increase the part removal time. Summary of the Invention

[0003] The purpose of this invention is to provide an automotive crossbeam pressing mold. After the metal sheet is placed on the lower concave mold surface and roughly positioned, an external hydraulic device drives the upper pressing mold to descend and close. During the mold closing process, the symmetrically arranged inclined pins on both sides of the upper mold are respectively inserted into the corresponding double inclined groove self-resetting correction structure of the lower mold. The left and right mechanisms move synchronously, pushing the sheet to automatically center and limit its position, and then completing the stamping. After the upper mold returns to the initial position, the mold position sensing mechanism detects whether the mold opening is in place. After confirming that it is in place, the pneumatic blowing structure is activated, using compressed air to break the vacuum adsorption in the lower concave mold cavity, and at the same time blowing the workpiece upward, so that it can smoothly detach from the concave mold and be ejected, making it easy to pick up the material, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automotive crossbeam pressing mold, comprising an upper mold assembly and a lower mold assembly: The lower mold assembly includes a lower mold base, a lower mold pad, and a lower mold platform, which are fixedly connected from bottom to top. A lower die is bolted to the center of the top of the lower mold platform. A double-sloping-groove self-resetting correction structure is symmetrically provided on the lower mold platforms on both sides of the lower die. A pneumatic blowing structure is embedded in the double-sloping-groove self-resetting correction structure. A mold position sensing mechanism is also provided on one outer wall of the lower mold platform. A cavity is provided between the lower die and the lower mold platform for the double-sloping-groove self-resetting correction structure to move. The upper mold assembly includes an upper mold base for connecting to hydraulic equipment, an upper mold platform fixed below the upper mold base, and an upper pressing mold fixed at the center of the bottom end of the upper mold platform. Two inclined pins are symmetrically fixed at the bottom ends of the upper mold platforms on both the left and right sides of the upper pressing mold. The two inclined pins on each side correspond to the positions of the double inclined groove self-resetting correction structure on the same side and the number of them are matched.

[0005] Preferably, the double-sloping-groove self-resetting correction structure includes a slide table slidably mounted on the top of the lower mold table, two sloping-hole grooves formed on the slide table and corresponding one-to-one with the positions of two sloping pins on the same side, and an elastic reset member disposed on the outside of the slide table. The elastic reset member is used to drive the slide table to slide and reset outward when the mold is opened. A clamping block is bolted to the top of the slide table through a keyway.

[0006] Preferably, the elastic reset component includes a guide plate fixed on one side of the outer wall of the lower mold table, a T-shaped rod slidably installed inside the guide plate, and a helical spring disposed on the outside of the guide plate and fitted on the T-shaped rod, with one end of the helical spring fixedly connected to the slide table.

[0007] Preferably, the bottom end of the lower die is integrally formed with two bottom protrusions, and a spacer is provided between the two bottom protrusions to accommodate the slide and allow the slide to slide.

[0008] Preferably, two insert pins are symmetrically installed at the bottom end of the lower die, and the lower die platform has positioning holes for inserting the insert pins inside. Two internal threaded hole platforms are installed on the outer wall of the bottom protrusion, and the internal threaded hole platforms are bolted to the lower die platform.

[0009] Preferably, the entrance of the inclined slot is provided with a flared guide surface that matches the lower end of the inclined pin, which is used to guide the inclined pin into the inclined slot in the early stage of mold closing and to prevent rigid impact.

[0010] Preferably, the mold position sensing mechanism includes a recessed portion disposed on the outer wall of one side of the lower mold platform, a laser rangefinder sensor mounted in the recessed portion via a bracket, and a sensing block mounted at the bottom edge of the upper mold platform and facing the laser rangefinder sensor.

[0011] Preferably, the upper surface of the lower die is engraved with a cross-shaped reference mark for assisting in visual rough positioning of the sheet metal, and the center of the cross-shaped reference mark is on the same vertical projection line as the center of the lower die.

[0012] Preferably, the pneumatic blow-out structure includes an air inlet pipe installed on the outer wall of one side of the slide, an exhaust hole opened in the slide and connected to the outlet end of the air inlet pipe, and an L-shaped air passage set inside the lower die, the upper end of the L-shaped air passage penetrating the lower die.

[0013] Preferably, the central axis of the air intake pipe, the exhaust port, and the L-shaped air passage are all on the same horizontal plane, and the cross-sectional diameter of the exhaust port is greater than or equal to the cross-sectional diameter of the upper end of the L-shaped air passage.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By utilizing the mechanical cooperation between the inclined pin and the double inclined groove self-resetting correction structure when the upper pressing die descends, the positioning action and the mold closing action are integrated in sequence, eliminating the risk of the sheet metal center and the mold cavity center not coinciding due to manual positioning. At this time, the correction stroke and the mold closing depth are rigidly corresponding. The more the sheet metal position deviates, the greater the correction force, until it is completely pushed to the geometric center. This reduces the difference in compression and tension caused by uneven material distribution. Compared with the electric centering mechanism, the pure mechanical structure does not require an independent power source and electrical control logic. It is not affected by high-frequency vibration and oil mist corrosion in the stamping site. There is no risk that the electric push rod will not be able to retract in time within the mold closing window and will be damaged. It does not occupy additional mold closing height, is compatible with the existing press table, and has a low modification cost. 2. The pneumatic blowing structure is activated during the mold opening and return process. High-pressure airflow is sprayed upward from the double-sloping groove self-resetting correction structure and the lower die. A positive pressure air film is quickly established between the crossbeam and the lower die contact surface, instantly breaking the vacuum adsorption and overcoming friction self-locking with uniform upward air pressure lifting force, so that the workpiece is floated smoothly. After the upper die is fully returned to its original position, the crossbeam is naturally higher than the die end face. The operator or robot can directly grab it from above without obstruction, completely avoiding lateral rigid contact, eliminating the risk of scratches and deformation, and greatly reducing the time spent picking up the part. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a side view of the structure of the present invention; Figure 4 yes Figure 3 Sectional view at point AA; Figure 5 This is a three-dimensional structural diagram of the lower concave mold and the upper pressing mold of the present invention; Figure 6 yes Figure 3 A three-dimensional structural cross-sectional view of point AA; Figure 7 This is a three-dimensional structural diagram of the upper mold platform and upper pressing mold of the present invention in the assembled state; Figure 8 This is a three-dimensional structural diagram of the double-sloping-slot self-resetting correction structure of the present invention. Figure 1 ; Figure 9 This is a three-dimensional structural diagram of the double-sloping-slot self-resetting correction structure of the present invention. Figure 2 ; Figure 10 This is a three-dimensional structural diagram of the upper pressing mold of the present invention; Figure 11 yes Figure 3 A three-dimensional sectional view of the BB section; Figure 12 For the present invention Figure 11 Enlarged structural diagram at point A in the middle; Figure 13 This is a three-dimensional structural diagram of the pneumatic blow molding structure of the present invention in the assembled state of the upper pressing mold.

[0016] In the diagram: 1. Lower mold base; 2. Lower mold pad; 3. Lower mold platform; 301. Positioning hole; 4. Double oblique groove self-resetting correction structure; 401. Slide table; 402. Oblique hole groove; 403. Clamping block; 404. Guide plate; 405. T-shaped rod; 406. Helical spring; 5. Pneumatic blow-out structure; 501. Exhaust hole; 502. Air inlet pipe; 503. L-shaped air passage; 6. Lower concave mold; 601. Insert post; 602. Bottom protrusion; 603. Spacer; 604. Internal threaded hole platform; 7. Upper mold base; 8. Upper mold platform; 9. Upper pressing mold; 10. Oblique pin; 11. Mold position sensing mechanism; 1101. Inner recess; 1102. Laser rangefinder sensor; 1103. Sensing block; 12. Cavity. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described 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.

[0018] Example 1, by Figures 1 to 5 The present invention includes a lower mold assembly comprising a lower mold base 1, a lower mold pad 2, and a lower mold table 3, which are fixedly connected from bottom to top. The lower mold base 1 and the lower mold pad 2 are heavy plates made of high-strength cast steel or forged steel, and the bottom surface is machined with a keyway that matches the positioning key of the press worktable. Through their huge rigidity and mass, they provide a reference for all lower mold components. A lower die 6 is bolted and fixed at the center of the top of the lower die platform 3. A double-sloping groove self-resetting correction structure 4 is symmetrically provided on the lower die platform 3 on both sides of the lower die 6. A pneumatic blowing structure 5 is embedded in the double-sloping groove self-resetting correction structure 4. A die position sensing mechanism 11 is also provided on one side of the outer wall of the lower die platform 3. A cavity 12 is provided between the lower die 6 and the lower die platform 3 for the double-sloping groove self-resetting correction structure 4 to move. The cavity 12 is reserved for the sliding of the slide table 401. The upper surface of the lower die 6 is engraved with cross-shaped reference marks to assist in visual rough positioning of the sheet metal. The center of the cross-shaped reference marks and the center of the lower die 6 are on the same vertical projection line. Operators can intuitively place the sheet metal according to the cross-shaped marks without repeated measurement and fine adjustment, which greatly shortens the single-piece loading time, is suitable for continuous batch production, and forms a fixed reference. The placement position of different operators and different shifts is consistent, reducing product dimensional defects caused by manual placement deviation. The upper mold assembly includes an upper mold base 7 for connecting hydraulic equipment, an upper mold platform 8 fixed below the upper mold base 7, and an upper pressing mold 9 fixed at the center of the bottom end of the upper mold platform 8. The lower mold base 1 and the lower mold pad 2 are heavy plates made of high-strength cast steel or forged steel. The bottom surface is machined with keyways that match the positioning keys of the press table. Through their huge rigidity and mass, they provide a reference for all lower mold components. Two inclined pins 10 are symmetrically fixed at the bottom ends of the upper mold platform 8 on both sides of the upper pressing mold 9. The two inclined pins 10 on each side correspond to the positions and numbers of the double inclined groove self-resetting correction structure 4 on the same side. There are four inclined pins 10 on each side, with two on each side, and the inclination angles are exactly the same. They are symmetrically fixed on both sides of the lower end of the upper mold table 8. Two pins on each side form a group to drive a double inclined slot self-resetting correction structure 4. They are inserted into the double inclined slot self-resetting correction structure 4 at the same time, and the vertical downward movement is accurately converted into horizontal thrust. The synchronous linkage of the four inclined pins 10 ensures that the displacement of the left and right double inclined slot self-resetting correction structures 4 is absolutely equal at any time, eliminating the off-center load caused by premature contact on one side. Moreover, the inclination angle design of the inclined pins 10 allows the small vertical stroke to be amplified into a sufficient horizontal correction displacement, so that the plate can be aligned even if the press stroke is short. The mold position sensing mechanism 11 includes a recess 1101 disposed on the outer wall of one side of the lower mold table 3, a laser range sensor 1102 mounted in the recess 1101 by a bracket, and a sensing block 1103 mounted at the bottom edge of the upper mold table 8 and facing the laser range sensor 1102. During the return stroke of the upper pressing mold 9, the sensing block 1103 moves with the upper mold table 8, and the laser range sensor 1102 continuously detects the distance between itself and the sensing block 1103. The distance increase signal is the unlocking condition for allowing air blowing, and the maximum distance value is the cycle signal for feeding material in the next cycle.

[0019] Example 2, based on Example 1, is... Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The double-sloping groove self-resetting correction structure 4 includes a slide 401 slidably mounted on the top of the lower mold table 3, two inclined slots 402 formed on the slide 401 and corresponding one-to-one with the positions of the two inclined pins 10 on the same side, and an elastic reset member set on the outside of the slide 401. The elastic reset member is used to drive the slide 401 to slide and reset outward when the mold is opened. A clamping block 403 is bolted to the top of the slide 401 through a keyway. The elastic reset component includes a guide plate 404 fixed on the outer wall of one side of the lower mold table 3, a T-shaped rod 405 slidably installed inside the guide plate 404, and a helical spring 406 provided on the outside of the guide plate 404 and fitted on the T-shaped rod 405. One end of the helical spring 406 is fixedly connected to the slide table 401. The entrance of the inclined slot 402 is provided with a flared guide surface that matches the lower end of the inclined pin 10, which is used to guide the inclined pin 10 into the inclined slot 402 in the early stage of mold closing and to prevent rigid impact. When the mold is closed, the two inclined pins 10 on each side of the upper mold table 8 correspond to the two inclined slots 402 of a double inclined slot self-resetting correction structure 4. The inclined pins 10 press down with the upper mold base 7, the upper mold table 8 and the upper pressing mold 9. The vertical force is decomposed into a horizontal component through the inclined plane, which overcomes the elastic force of the helical spring 406 and drives the slide table 401, the clamping block 403, the T-shaped rod 405 and the pneumatic blowing structure 5 to move in the direction of the lower die 6. The clamping blocks 403 on both sides push the outer edge of the sheet metal so that its centerline is aligned with the center of the die cavity. When the upper mold table 8 returns, the inclined pin 10 gradually exits the inclined hole groove 402, and the helical spring 406 pushes the T-shaped rod 405, the slide table 401, and the clamping block 403 to reset and move outward, thereby releasing the restriction on the formed workpiece. The bottom end of the lower die 6 has two integrally formed bottom protrusions 602. A spacer 603 is provided between the two bottom protrusions 602 to accommodate the slide table 401 and allow the slide table 401 to slide. Two insert pins 601 are symmetrically installed at the bottom end of the lower die 6. The lower die table 3 has a positioning hole 301 inside for the insert pins 601 to be inserted. The symmetrical insert pins 601 on both sides cooperate with the positioning hole 301 to achieve rapid centering of the lower die 6 and the lower die table 3, reduce die offset, and ensure the dimensional accuracy of the product after stamping and pressing. Two internal threaded hole platforms 604 are installed on the outer wall of the bottom protrusions 602. The internal threaded hole platforms 604 are bolted to the lower die table 3. When the lower die 6 is installed with the lower die table 3, the two inserts 601 at the bottom of the lower die 6 are inserted into the positioning hole 301. Then, the internal thread hole platform 604 and the lower die table 3 are connected by bolts. At this time, the slide 401 is located in the space 603 between the two bottom protrusions 602 and slides with the bottom protrusions 602. Example 3, based on Example 2, by Figure 11 , Figure 12 and Figure 13 The pneumatic blow molding structure 5 includes an air inlet pipe 502 installed on the outer wall of one side of the slide table 401, an exhaust hole 501 opened in the slide table 401 and connected to the outlet end of the air inlet pipe 502, and an L-shaped air passage 503 set inside the lower die 6. The upper end of the L-shaped air passage 503 penetrates the lower die 6. The central axes of the air inlet pipe 502, the exhaust hole 501 and the L-shaped air passage 503 are all on the same horizontal plane. At this time, the airflow direction is without bending or deviation, and there are no turbulent dead angles. The air pressure is output stably throughout the process, avoiding uneven local air pressure, ensuring that the product is released from the mold synchronously, preventing deviation and jamming. Moreover, the cross-sectional diameter of the exhaust hole 501 is greater than or equal to the cross-sectional diameter of the upper end of the L-shaped air passage 503, and its airflow discharge resistance allows high-pressure gas to quickly rush out of the L-shaped air passage 503. The compressed air pressure connected to the intake pipe 502 can be set to 0.4-0.6 MPa for 0.5-1.5 seconds, which can effectively break the vacuum and lift the workpiece without the pressure being too high and blowing the workpiece away or tilting it. When the mold position sensing mechanism 11 detects the mold opening action, the solenoid valves connected to each air inlet pipe 502 open quickly. The blowing action overlaps with the mold opening return stroke, without occupying extra cycle time. Compressed air enters the slide table 401 along the air inlet pipe 502 and enters the L-shaped air passage 503 from the exhaust hole 501. The compressed air is ejected from the upper opening of the L-shaped air passage 503, thereby instantly forming a positive pressure air film between the workpiece and the lower die 6. This breaks the vacuum negative pressure, overcomes the frictional adhesion force, and lifts the workpiece with uniform upward air pressure, causing it to float and separate from the lower die 6.

[0020] In this embodiment, the first step is to separate a single sheet of metal from the stack. Holding the sheet by both ends, the sheet is placed stably on the table of the lower die 6. The sheet is then roughly adjusted in its front-to-back and left-to-right position so that its geometric center roughly coincides with the cavity center of the lower die, with the error controlled within the acceptable visual range for the operator. At this point, the sheet is not yet fixed by any clamping elements and is in a free-floating state. Pressing the start buttons on both sides of the press control panel causes the external hydraulic press to drive the upper die base 7, upper die table 8, upper pressing die 9, and inclined pins 10 downwards. When the upper pressing die 9 descends to the preset contact height, its bottom surface approaches the upper surface of the sheet. Simultaneously, the lower ends of the two inclined pins 10 on each side of the upper die table 8 are inserted into the double inclined groove self-resetting correction structures 4 on the left and right sides of the lower die table 3. The vertical downward movement of the inclined pins 10 is controlled by the conversion of the inclined surfaces within the two double inclined groove self-resetting correction structures 4. The upper part generates a horizontal synchronous pushing force, which pushes the outer edge of the sheet metal towards the center at a uniform speed from both sides until the two sides of the sheet metal are completely in contact with the reference side of the lower die 6, realizing automatic centering and limiting. The correction action is carried out synchronously with the die closing stroke, and the pushing force gradually increases with the insertion depth of the inclined pin 10, ensuring that the sheet metal is forcibly locked in the ideal position before stretching and forming begins. The upper pressing die 9 continues to descend until the pressure ring contacts the edge of the sheet metal. The pressure ring applies a preset pressure force to prevent stretching and wrinkling. The punch head enters the die cavity and presses the sheet metal into the die cavity. The metal material deforms in the gap between the punch and die until the die closing is completed. The crossbeam is held and shaped under forming pressure. After the holding time ends, the hydraulic equipment drives the upper die base 7, upper die table 8, upper pressing die 9 and inclined pin 10 to return upward. The inclined pin 10 gradually exits from the double inclined groove self-resetting correction structure 4, releasing the limitation on the edge of the crossbeam and making room for demolding. As the lower die 6 continues to rise, the die position sensing mechanism 11 determines the die opening action. At this time, the control system immediately triggers the pneumatic blowing structure 5. The external air source delivers compressed air to the double inclined groove self-resetting correction structure 4 and the lower die 6. The high-pressure gas is ejected and forms a uniform positive pressure air film between the bottom surface of the crossbeam and the surface of the lower die 6. The air film quickly breaks the vacuum negative pressure state generated in the lower die 6 due to the tight fit of the crossbeam with the upward impact force. At the same time, it overcomes the adhesion resistance caused by high pressure contact friction and the tension of the stretching oil film during the molding process, and blows the crossbeam smoothly upward away from the die cavity, so that the workpiece floats up and partially exceeds the lower die 6, leaving a safe and sufficient grasping space for the operator or robot. The operator uses a special part-retrieving hook or hand suction cup to pick up the finished crossbeam that has floated up from above without obstruction and places it on the conveyor belt or inspection table for subsequent trimming, punching and other processes.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molding die for pressing an automotive crossbeam, comprising an upper die assembly and a lower die assembly, characterized in that: The lower mold assembly includes a lower mold base (1), a lower mold pad (2), and a lower mold platform (3) that are fixedly connected from bottom to top. A lower die (6) is bolted to the center of the top of the lower mold platform (3). A double-sloping groove self-resetting correction structure (4) is symmetrically provided on the lower mold platform (3) on both sides of the lower die (6). A pneumatic blowing structure (5) is embedded in the double-sloping groove self-resetting correction structure (4). A mold position sensing mechanism (11) is also provided on one side of the outer wall of the lower mold platform (3). A cavity (12) for the double-sloping groove self-resetting correction structure (4) to move is provided between the lower die (6) and the lower mold platform (3). The upper mold assembly includes an upper mold base (7) for connecting to a hydraulic device, an upper mold platform (8) fixed below the upper mold base (7), and an upper pressing mold (9) fixed at the center of the bottom end of the upper mold platform (8). Two inclined pins (10) are symmetrically fixed at the bottom ends of the upper mold platform (8) on both the left and right sides of the upper pressing mold (9). The two inclined pins (10) on each side correspond to the positions of the double inclined groove self-resetting correction structure (4) on the same side and the number of them matches.

2. The automobile crossbeam pressing mold according to claim 1, characterized in that: The double-sloping groove self-resetting correction structure (4) includes a slide (401) slidably mounted on the top of the lower mold plate (3), two inclined slots (402) opened on the slide (401) and corresponding one-to-one with the positions of the two inclined pins (10) on the same side, and an elastic reset member set on the outside of the slide (401). The elastic reset member is used to drive the slide (401) to slide and reset to the outside when the mold is opened. The top of the slide (401) is bolted with a clamping block (403) through a keyway.

3. The automobile crossbeam pressing mold according to claim 2, characterized in that: The elastic reset component includes a guide plate (404) fixed on the outer wall of one side of the lower mold table (3), a T-shaped rod (405) slidably installed inside the guide plate (404), and a helical spring (406) set on the outside of the guide plate (404) and fitted on the T-shaped rod (405). One end of the helical spring (406) is fixedly connected to the slide table (401).

4. The automobile crossbeam pressing mold according to claim 2, characterized in that: The bottom end of the lower die (6) is integrally formed with two bottom protrusions (602), and a spacer (603) is provided between the two bottom protrusions (602) for accommodating the slide (401) and allowing the slide (401) to slide.

5. The automobile crossbeam pressing mold according to claim 4, characterized in that: Two inserts (601) are symmetrically installed at the bottom end of the lower die (6). The lower die platform (3) is provided with positioning holes (301) for inserting the inserts (601). Two internal threaded hole platforms (604) are installed on the outer wall of the bottom protrusion (602). The internal threaded hole platforms (604) are bolted to the lower die platform (3).

6. The automobile crossbeam pressing mold according to claim 2, characterized in that: The entrance of the inclined slot (402) is provided with a flared guide surface that matches the lower end of the inclined pin (10) to guide the inclined pin (10) into the inclined slot (402) in the early stage of mold closing and to prevent rigid impact.

7. The automobile crossbeam pressing mold according to claim 2, characterized in that: The mold position sensing mechanism (11) includes an inner recess (1101) disposed on the outer wall of one side of the lower mold platform (3), a laser range sensor (1102) mounted in the inner recess (1101) by a bracket, and a sensing block (1103) mounted at the bottom edge of the upper mold platform (8) and facing the laser range sensor (1102).

8. The automobile crossbeam pressing mold according to claim 4, characterized in that: The upper surface of the lower die (6) is engraved with a cross-shaped reference mark for assisting the sheet metal in visual rough positioning. The center of the cross-shaped reference mark is on the same vertical projection line as the center of the lower die (6).

9. The automobile crossbeam pressing mold according to claim 4, characterized in that: The pneumatic blow-out structure (5) includes an air inlet pipe (502) installed on the outer wall of one side of the slide (401), an exhaust hole (501) opened in the slide (401) and connected to the outlet end of the air inlet pipe (502), and an L-shaped air passage (503) set inside the lower die (6), the upper end of the L-shaped air passage (503) penetrating the lower die (6).

10. The automobile crossbeam pressing mold according to claim 9, characterized in that: The central axes of the air intake pipe (502), the exhaust port (501) and the L-shaped air passage (503) are all on the same horizontal plane, and the cross-sectional diameter of the exhaust port (501) is greater than or equal to the upper cross-sectional diameter of the L-shaped air passage (503).

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