Continuous punch forming die for machining and manufacturing vehicle engine hood

Abstract

The continuous punch forming die for machining and manufacturing the vehicle engine hood comprises a mounting base and a limiting sleeve fixedly connected to the mounting base, a mounting frame and a top plate are arranged at the top of the limiting sleeve, and an upper die and two sets of lower dies are mounted on the top plate and the mounting frame correspondingly; the deviating sides of the upper mold and the lower mold are connected with mounting plates through tension springs, and the mounting plates are provided with oil coating type demolding assemblies and linkage type supporting assemblies; the two sets of lower dies are alternately matched with the upper die, continuous and rapid punch forming of the vehicle engine hood is achieved so that the machining efficiency can be improved, in combination with the oiling type demolding assembly, comprehensive oil spraying lubricating treatment of the die forming face is achieved, efficient lubricating protection is achieved on the engine hood and the die, a feeding plate is adsorbed and positioned, and the machining efficiency of the vehicle engine hood is improved. And then the linkage type supporting assembly is combined, stable rigid supporting is provided for the lower mold, and automatic demolding treatment of the engine hood can be assisted.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping forming, and particularly to a continuous stamping forming die for manufacturing a vehicle hood. Background Art

[0002] In the automotive manufacturing industry, as an important part of the vehicle body, the manufacturing process of the vehicle hood has a crucial impact on product quality and production efficiency. The hood usually has a complex shape and large size, so it faces many challenges during the stamping forming process, such as defects like cracking easily occurring during stamping, which not only affects the appearance and performance of the product, but also increases production costs and scrap rates.

[0003] For example, a stamping device for a vehicle hood with a publication number of CN212168799U in the prior art is a split lower die combined with a lifting limit block, which causes the left lower die and the right lower die to deflect. Although it can achieve automatic demolding, the step-by-step stamping method of feeding, stamping, and blanking makes it impossible to perform feeding and blanking synchronously during the stamping process, and thus it is difficult to further shorten the stamping cycle to improve processing efficiency.

[0004] In addition, during the stamping process, due to the lack of effective lubrication measures, the friction between the sheet and the die is large, which not only easily scratches the sheet and affects the quality of the finished product, but also accelerates the wear of the die, thereby reducing the service life of the die. Summary of the Invention

[0005] The purpose of the present invention is to provide a continuous stamping forming die for manufacturing a vehicle hood to solve the above-mentioned technical defects.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A continuous stamping forming die for manufacturing a vehicle hood includes a mounting base and a limit sleeve fixedly connected to the mounting base. An installation frame and a top plate are sequentially arranged on the top of the limit sleeve from bottom to top. An upper die and two groups of lower dies are respectively installed on the top plate and the installation frame. The opposite sides of the upper die and the lower die are connected to an installation plate through a tension spring, and an oiling type demolding component is arranged on the installation plate.

[0007] The oiling type demolding component includes a plurality of ejector rods rotatably connected to the installation plate. The upper die and the lower die are slidably connected to the corresponding ejector rods. A plurality of rotating disks are installed on the ejector rods, and oil injection ports are formed in the rotating disks. A negative pressure suction cup is embedded and installed at the top of the ejector rod on the lower die, and a linkage type support component is arranged on the installation frame.

[0008] Preferably, a movable plate is slidably connected inside the limit sleeve, and an electric push rod is fixedly installed between the movable plate and the limit sleeve. An activity column is connected between the movable plate and the top plate, and a first guiding pin is symmetrically and fixedly connected to the outer wall of the activity column.

[0009] Preferably, a rotating sleeve rotatably connected to the limit sleeve is fixedly connected to the mounting frame. A vertical groove for sliding the corresponding first guiding pin is formed on the inner side wall of the rotating sleeve, and a triangular groove is communicated between the tops of the vertical grooves.

[0010] Preferably, a limiting groove is formed on the outer side wall of the rotating sleeve. A spring piece is fixedly connected to the top of the limit sleeve, and a convex part adapted to the limiting groove is provided on the spring piece.

[0011] Preferably, an oil inlet cavity penetrating through one end of the top push rod is formed inside the top push rod. An installation groove for rotatably installing the corresponding rotating disc and a movable groove communicated with the installation groove are formed through the annular side wall of the oil inlet cavity. An L-shaped rod is slidably connected in the movable groove. A second guiding pin is eccentrically and fixedly connected to one side of the rotating disc. A notch for sliding the second guiding pin is formed on the L-shaped rod.

[0012] Preferably, an auxiliary sleeve is arranged outside the top push rod, and the auxiliary sleeve is fixedly connected to the mounting plate through a support rod. A wavy groove is formed on the inner side wall of the auxiliary sleeve. A third guiding pin slidably connected to the wavy groove is fixedly connected to the L-shaped rod.

[0013] Preferably, a secondary sprocket is fixedly installed on the top push rod. A motor is fixedly installed on the mounting plate, and a main sprocket is installed on the output shaft of the motor. The main sprocket is connected to a plurality of secondary sprockets through a chain drive.

[0014] Preferably, a second oil injection pipe is arranged on the mounting plate, and the second oil injection pipe is communicated with the corresponding top push rod through a rotary joint. A storage oil tank is fixedly installed on both the mounting frame and the top plate, and an oil suction pump is installed in the storage liquid tank. The liquid outlet of the oil suction pump is communicated with the second oil injection pipe through a first oil injection pipe.

[0015] Preferably, the linkage support assembly includes a U-shaped frame fixedly connected to the bottom of the mounting frame, and a fixed frame is fixedly connected to the U-shaped frame. A slider is slidably connected in the fixed frame, and a push rod is hinged between the slider and the corresponding mounting plate. A support rod is fixedly connected to the bottom of the slider, and a ball is rotatably embedded at the bottom of the support rod. An arc-shaped guiding block is fixedly connected to the top of the mounting seat.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) In the process of driving the upper die to rise and fall by the movable column, the present invention promotes the intermittent rotation of the mounting frame by means of the cooperation of the guiding pin 1 with the vertical groove and the triangular groove, causing the two lower dies to alternately cooperate with the upper die for stamping and forming. While stamping and forming the vehicle engine hood, it can synchronously perform loading and unloading processes, thus realizing continuous and rapid stamping and forming, and further improving the processing efficiency. In addition, through the negative pressure suction cup at the top of the ejector rod in the lower die, accurate positioning of the fed sheet can be achieved, ensuring the accurate stamping effect when the upper die contacts the lower die for stamping and forming.

[0018] (2) The present invention also injects lubricating oil into the ejector rod and then sprays it out through the oil injection ports on multiple rotating disks. Combining with the rotation of the ejector rod, it can lubricate the forming surfaces of the upper die and the lower die, avoiding scratches on the formed vehicle engine hood and extending the service life of the die. In addition, by means of the rotation of the ejector rod, combined with the guiding pin 3 and the wave groove, and the L-shaped rod and the guiding pin 2, the rotating disk rotates and deflects forward and backward at the same time, continuously changing the oil injection angle, thus further optimizing the comprehensive oil injection lubrication treatment of the forming surfaces of the upper die and the lower die and further improving the stamping lubrication effect.

[0019] (3) During stamping, the present invention provides stable rigid support for the lower die through the support rod combined with the slider and the fixed frame, effectively preventing deformation and damage of the mounting frame and further improving the service life of the device. When the upper die rises and resets after stamping, the automatic demoulding of the upper die and the vehicle engine hood is realized through the pulling spring combined with the ejector rod. When the vehicle engine hood rotates with the lower die, combined with the guiding of the arc-shaped guiding block to the support rod, the slider moves and drives the push rod to drive the corresponding ejector rod to rise, pushing the vehicle engine hood out of the lower die, providing convenience for rapid auxiliary unloading. Brief Description of the Drawings

[0020] The following further describes the present invention with reference to the drawings;

[0021] Figure 1 is the structural schematic diagram of the present invention;

[0022] Figure 2 is the matching schematic diagram of the oiling type demoulding component and the linkage type supporting component of the present invention;

[0023] Figure 3 is the installation schematic diagram of the movable column of the present invention;

[0024] Figure 4 is the structural schematic diagram of the linkage type supporting component of the present invention;

[0025] Figure 5 is the disassembly schematic diagram of the lower die and the mounting plate of the present invention;

[0026] Figure 6It is a schematic installation diagram of the oiling type demoulding component of the present invention on the mounting plate;

[0027] Figure 7 It is a schematic structural diagram of the oiling type demoulding component of the present invention;

[0028] Figure 8 It is a schematic disassembled diagram of the rotating disk and the L-shaped rod of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the auxiliary sleeve of the present invention.

[0030] Legend:

[0031] 1. Mounting seat; 11. Limiting sleeve; 12. Mounting frame; 13. Top plate; 14. Upper mold; 15. Lower mold; 16. Tension spring; 17. Mounting plate; 18. Electric push rod; 19. Movable column; 110. Guide pin 1; 111. Rotating sleeve; 112. Vertical groove; 113. Triangular groove; 114. Limiting groove; 115. Spring piece;

[0032] 2. Oiling type demoulding component; 21. Top push rod; 22. Rotating disk; 23. Oil injection port; 24. Negative pressure suction cup; 25. L-shaped rod; 26. Guide pin 2; 27. Auxiliary sleeve; 28. Wavy groove; 29. Guide pin 3;

[0033] 3. Linkage support component; 31. U-shaped frame; 32. Fixed frame; 33. Slide block; 34. Push rod; 35. Support rod; 36. Arc guide block. Detailed implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0035] Embodiment 1: Please refer to Figures 1-9 As shown, for the problem in the prior art that it is difficult to perform efficient and precise anti-injury rapid stamping forming on the vehicle engine hood, the following solutions can be adopted;

[0036] In this embodiment, a continuous stamping forming die for manufacturing a vehicle engine hood includes a mounting seat 1 and a limiting sleeve 11 fixedly connected to the mounting seat 1. An mounting frame 12 and a top plate 13 are sequentially arranged on the top of the limiting sleeve 11 from bottom to top, and an upper mold 14 and two groups of lower molds 15 are respectively installed on the top plate 13 and the mounting frame 12;

[0037] That is, by alternately matching two groups of lower dies 15 with the upper die 14 for stamping and forming, while stamping and forming the vehicle engine hood, it is possible to synchronously handle loading and unloading, thereby achieving continuous and rapid stamping and forming, and further improving the processing efficiency. Both the back sides of the upper die 14 and the lower die 15 are connected with mounting plates 17 through tension springs 16, and an oiling type demolding assembly 2 is arranged on the mounting plates 17;

[0038] The oiling type demolding assembly 2 includes a plurality of ejector rods 21 rotatably connected to the mounting plate 17. The upper die 14 and the lower die 15 are slidably connected to the corresponding ejector rods 21. A plurality of rotating disks 22 are installed on the ejector rods 21, and oil injection ports 23 are formed in the rotating disks 22. The end of the ejector rod 21 penetrates to the forming surface of the die under the elastic stretching action of the tension spring 16. The rotating disk 22 is placed at the end of the side wall of the ejector rod 21, so that lubricating oil can be sprayed onto the forming surface of the die, avoiding stamping and scratching of the formed vehicle engine hood and extending the service life of the die;

[0039] A negative pressure suction cup 24 is embedded and installed at the top of the ejector rod 21 on the lower die 15. Through the negative pressure suction cup 24 at the top of the ejector rod 21 in the lower die 15, precise positioning processing of the feeding plate can be achieved. When the upper die 14 and the lower die 15 are in contact and stamping and forming, the precise effect of stamping and forming can be ensured. The feeding manipulator grabs the plate and places it on the lower die 15 on one side of the upper die 14. During the placement process, the plate contacts the tops of a plurality of ejector rods 21 on the lower die 15, and the placed plate is positioned and adsorbed through the negative pressure suction cup 24. A linkage type support assembly 3 is arranged on the mounting frame 12.

[0040] An activity plate is slidably connected inside the limit sleeve 11, and an electric push rod 18 is fixedly installed between the activity plate and the limit sleeve 11. The activity plate cooperates with the limit sleeve 11 to avoid the problem of reducing the service life of the electric push rod 18 due to the deflection force of the activity column 19. A connection between the activity plate and the top plate 13 is provided with an activity column 19. The electric push rod 18 drives the activity plate to carry the activity column 19 to lift and lower, realizing the contact and cooperation between the upper die 14 and the lower die 15 to complete the stamping and forming of the vehicle engine hood, and guiding pins one 110 are symmetrically fixed on the outer wall of the activity column 19.

[0041] A rotating sleeve 111 rotatably connected to the limit sleeve 11 is fixedly connected to the mounting frame 12, and a vertical groove 112 for sliding with the corresponding guiding pin one 110 is formed on the inner side wall of the rotating sleeve 111, and a triangular groove 113 is communicated between the tops of the vertical grooves 112. During the process of driving the upper die 14 to lift and lower by the activity column 19, with the cooperation of the guiding pin one 110 with the vertical groove 112 and the triangular groove 113, the mounting frame 12 is intermittently rotated, so that two groups of lower dies 15 alternately cooperate with the upper die 14 for stamping and forming;

[0042] During the upward movement of the movable column 19, the guiding pin 110 on the movable column 19 is urged to enter the triangular groove 113 from the vertical groove 112. Through the guiding of the triangular groove 113 on the guiding pin 110, the mounting bracket 12 is caused to deflect once. Then, following the downward movement of the movable column 19, the guiding pin 110 is guided again by the triangular groove 113, causing the mounting bracket 12 to deflect twice. The guiding pin 110 enters the adjacent vertical groove 112, driving the lower mold 15 with the plate placed thereon to move directly below the upper mold 14, causing the upper mold 14 and the lower mold 15 to be accurately docked.

[0043] A limiting groove 114 is formed on the outer side wall of the rotating sleeve 111. A spring piece 115 is fixedly connected to the top of the limiting sleeve 11, and a protruding portion adapted to the limiting groove 114 is provided on the spring piece 115. After the mounting bracket 12 deflects once, the protruding portion on the spring piece 115 engages with the limiting groove 114 on the rotating sleeve 111, restricting the rotation of the mounting bracket 12. This prevents the movable column 19 from undergoing a reset deflection during the downward movement driven by the electric push rod 18, which would cause the guiding pin 110 to return to the vertical groove 112, resulting in the problem that the lifting movable column 19 is difficult to efficiently cause the mounting bracket 12 to deflect. When the movable column 19 moves downward, the spring piece 115 is forced to deform, and the limiting groove 114 and the protruding portion are separated.

[0044] An oil inlet cavity penetrating one end of the top push rod 21 is formed inside the top push rod 21 for injecting lubricating oil into the oil injection ports 23 on the plurality of rotating discs 22. An installation groove for rotatably mounting the corresponding rotating disc 22 and a movable groove communicating with the installation groove are formed through the annular side wall of the oil inlet cavity. An L-shaped rod 25 is slidably connected in the movable groove. A guiding pin 26 is eccentrically fixed to one side of the rotating disc 22. A notch for the guiding pin 26 to slide is formed on the L-shaped rod 25.

[0045] Through the reciprocating lifting movement of the L-shaped rod 25 and then through the notch and the guiding pin 26, the rotating disc 22 is caused to rotate circumferentially while undergoing forward and reverse deflection, performing a comprehensive oil injection lubrication treatment on the forming surface of the upper mold 14. The initial angles of the plurality of rotating discs 22 are different, that is, the orientation angles of the oil injection ports 23 are different. When the rotating disc 22 rotates circumferentially while undergoing forward and reverse deflection, the oil injection paths are different, further increasing the range of oil injection lubrication. When the rotating disc 22 deflects, the lubricating oil ejected from the oil injection port 23 cannot be sprayed outside the lower mold 15 to avoid polluting the surrounding environment.

[0046] An auxiliary sleeve 27 is provided outside the top push rod 21, and the auxiliary sleeve 27 is fixedly connected to the mounting plate 17 through a support rod. A wave groove 28 is formed on the inner side wall of the auxiliary sleeve 27. A guiding pin 29 that slides with the wave groove 28 is fixedly connected to the L-shaped rod 25. Through the rotation of the top push rod 21 and the guiding of the guiding pin 29 by the wave groove 28 on the auxiliary sleeve 27, the L-shaped rod 25 is caused to reciprocate up and down.

[0047] A sub-sprocket is fixedly installed on the top push rod 21, and a motor is fixedly installed on the mounting plate 17. A main sprocket is installed on the output shaft of the motor. The main sprocket and multiple sub-sprockets are connected by chain drive. The motor drives the main sprocket to rotate, and the chain and the sub-sprocket drive the multiple top push rods 21 on the upper mold 14 to rotate, so as to perform a comprehensive oil spraying and lubrication treatment on the mold forming surface.

[0048] A second oil injection pipe is provided on the mounting plate 17, and the second oil injection pipe is communicated with the corresponding top push rod 21 through a rotary joint. An oil storage tank is fixedly installed on both the mounting frame 12 and the top plate 13, and an oil suction pump is installed in the liquid storage tank. The liquid outlet of the oil suction pump is communicated with the second oil injection pipe through a first oil injection pipe. The oil suction pump extracts the lubricating oil in the oil storage tank and injects it into the oil inlet cavity in the multiple top push rods 21 through the first oil injection pipe, the second oil injection pipe and the rotary joint, and then sprays it out through the oil spraying ports 23 on the multiple rotating disks 22. Combined with the motor driving the multiple top push rods 21 to rotate, a comprehensive oil spraying and lubrication treatment is performed on the mold forming surface.

[0049] Embodiment 2: Please refer to Figures 2-4 As shown, for the problem of automatic demoulding after stamping of the vehicle engine hood, the following solutions can be adopted;

[0050] In this embodiment, a continuous stamping and forming die for manufacturing a vehicle engine hood includes a mounting seat 1 and a limiting sleeve 11 fixedly connected to the mounting seat 1. An upper mounting frame 12 and a top plate 13 are sequentially arranged on the top of the limiting sleeve 11 from bottom to top. An upper mold 14 and two groups of lower molds 15 are respectively installed on the top plate 13 and the mounting frame 12. The back sides of the upper mold 14 and the lower mold 15 are both connected to a mounting plate 17 through a tension spring 16. When the upper mold 14 rises and resets after stamping, the upper mold 14 and the vehicle engine hood are automatically demoulded by the tension spring 16 combined with the top push rod 21, and an oiling type demoulding component 2 is arranged on the mounting plate 17;

[0051] The oiling type demoulding component 2 includes a plurality of top push rods 21 rotatably connected to the mounting plate 17. The distribution of the top push rods 21 should be located at the points of the same height of the vehicle engine hood after forming. After the stamping and forming are completed, with the upward movement of the top push rods 21, the vehicle engine hood can be driven to be smoothly demoulded, thereby avoiding problems such as material jamming or falling after demoulding;

[0052] The upper die 14 and the lower die 15 are slidably connected to the corresponding ejector rods 21. A plurality of rotating disks 22 are installed on the ejector rods 21, and oil injection ports 23 are provided in the rotating disks 22. A negative pressure suction cup 24 is embedded and installed at the top of the ejector rod 21 on the lower die 15. A linkage support assembly 3 is provided on the mounting frame 12. The loading manipulator grabs the plate and places it in contact with the tops of the plurality of ejector rods 21 on the lower die 15. The gravity of the plate pushes the ejector rod 21 to carry the mounting plate 17 downward and stretch the tension spring 16, causing the plate to automatically enter the lower die 15 in a buffered manner.

[0053] The linkage support assembly 3 includes a U-shaped frame 31 fixedly connected to the bottom of the mounting frame 12. A fixed frame 32 is fixedly connected to the U-shaped frame 31. A slider 33 is slidably connected in the fixed frame 32. A push rod 34 is hinged between the slider 33 and the corresponding mounting plate 17. A support rod 35 is fixedly connected to the bottom of the slider 33;

[0054] The movable column 19 drives the top plate 13 to move downward, causing the upper die 14 to move downward synchronously until the upper die 14 contacts and cooperates with the lower die 15 to stamp the plate into a vehicle engine hood. During stamping, the lower die 15 is rigidly and stably supported by the contact of the support rod 35 with the mounting seat 1 and the fixation of the horizontal height of the slider 33 in the fixed frame 32. Then, the vehicle engine hood is rigidly stamped and formed. A ball is rollingly embedded at the bottom of the support rod 35 to assist the movement of the support rod 35 on the top of the mounting seat 1;

[0055] An arc-shaped guiding block 36 is fixedly connected to the top of the mounting seat 1. After the vehicle engine hood is stamped and formed, the electric push rod 18 drives the upper die 14 to move upward. During the upward movement, the mounting frame 12 is caused to rotate again, placing the plate below the upper die 14 and the vehicle engine hood on the arc-shaped guiding block 36. During the rotation of the mounting frame 12, the support rod 35 contacts the arc-shaped guiding block 36, causing the support rod 35 to carry the slider 33 to move close to the limit sleeve 11 and pushing the corresponding mounting plate 17 to move upward through the push rod 34. The ejector rod 21 carries the vehicle engine hood to be demolded and discharged from the upper die 14, and the unloading process is combined with the loading manipulator;

[0056] During the process of moving the lower die 15 with the plate placed on it to directly below the upper die 14, and after the arc-shaped guiding block 36 is separated from the support rod 35, the gravity of the plate pushes the ejector rod 21 to carry the mounting plate 17 downward, causing the slider 33 to carry the support rod 35 to move away from the limit sleeve 11 through the hinged push rod 34, so that the plate automatically enters the lower die 15 synchronously during the movement.

[0057] Embodiment 3: Please refer to Figures 1-9 As shown, the present invention also proposes a method for using a continuous stamping and forming die for manufacturing a vehicle engine hood, including the following steps:

[0058] Step 1: The feeding manipulator grabs the sheet and places it on the lower die 15 above the arc-shaped guiding block 36. During the placement process, the top of the sheet contacts the tops of multiple ejector rods 21 on the lower die 15, and the placed sheet is positioned and adsorbed by the negative pressure suction cup 24.

[0059] Step 2: The electric push rod 18 drives the movable plate to carry the movable column 19 upward, causing the guiding pin one 110 on the movable column 19 to enter the triangular groove 113. Through the guidance of the triangular groove 113 on the guiding pin one 110, the mounting bracket 12 deflects once. The convex part on the spring piece 115 engages with the limiting groove 114 on the rotating sleeve 111 to limit the rotation of the mounting bracket 12. Then, the electric push rod 18 drives the movable column 19 to move downward, forcing the spring piece 115 to deform, and the limiting groove 114 separates from the convex part. Once again, through the guidance of the triangular groove 113 on the guiding pin one 110, the mounting bracket 12 deflects for the second time, driving the lower die 15 with the placed sheet to move directly below the upper die 14. During this process, the arc-shaped guiding block 36 separates from the support rod 35. The ejector rod 21 drives the mounting plate 17 to move downward by the gravity of the sheet and stretches the tension spring 16. The hinged push rod 34 causes the slider 33 to carry the support rod 35 away from the limit sleeve 11, and the sheet automatically enters the interior of the lower die 15.

[0060] Step 3: The movable column 19 drives the top plate 13 to move downward, causing the upper die 14 to move downward synchronously until the upper die 14 contacts and cooperates with the lower die 15 to stamp the sheet into a vehicle engine hood. During the stamping process, the support rod 35 contacts the mounting seat 1, and the horizontal height of the slider 33 in the fixed frame 32 is fixed to provide rigid and stable support for the lower die 15, thereby performing rigid stamping forming treatment on the vehicle engine hood.

[0061] Step 4: When the upper die 14 enters the lower die 15 and the upper ejector rod 21 above does not contact the sheet, the oil suction pump extracts the lubricating oil in the fuel tank and injects it into the oil inlet cavity in the multiple ejector rods 21 through the first injection pipe, the second injection pipe, and the rotary joint, and then sprays it out through the oil injection ports 23 on the multiple rotating disks 22. The motor on the upper die 14 drives the main sprocket to rotate, and the chain and the secondary sprocket drive the multiple ejector rods 21 on the upper die 14 to rotate. With the guidance of the wave groove 28 on the auxiliary sleeve 27 for the guiding pin three 29, the L-shaped rod 25 reciprocates up and down. Then, through the notch and the guiding pin two 26, the rotating disk 22 rotates in a circle and deflects forward and backward at the same time to perform a comprehensive oil spraying and lubrication treatment on the forming surface of the upper die 14.

[0062] Step Five: When performing stamping forming, place the sheet on another lower die 15 for positioning. After the stamping forming of the vehicle hood is completed, the electric push rod 18 drives the upper die 14 to move upward. During the upward movement, it prompts the mounting bracket 12 to rotate again, place the sheet under the upper die 14, and place the vehicle hood on the arc-shaped guiding block 36. During the rotation of the mounting bracket 12, the support rod 35 contacts the arc-shaped guiding block 36, prompting the support rod 35 to carry the slider 33 to move closer to the direction of the limit sleeve 11, and pushing the corresponding mounting plate 17 to move upward through the push rod 34. The top push rod 21 carries the vehicle hood to be demolded and discharged from the upper die 14, and combines with the loading manipulator for blanking treatment. Then repeat Step Four to perform a comprehensive oil spraying and lubrication treatment on the forming surface of the lower die 15, and then perform the loading treatment of the sheet through the loading manipulator, thereby completing the continuous stamping forming process of the vehicle hood.

[0063] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A continuous stamping and forming die for vehicle hood processing and manufacturing, comprising a mounting base (1), and a limit sleeve (11) fixedly connected to the mounting base (1), characterized in that, At the top of the limiting sleeve (11), an installation frame (12) and a top plate (13) are successively arranged from bottom to top. An upper mold (14) and two groups of lower molds (15) are respectively installed on the top plate (13) and the installation frame (12). On the opposite sides of the upper mold (14) and the lower mold (15), mounting plates (17) are connected through tension springs (16), and an oiling type demolding assembly (2) is arranged on the mounting plates (17). The oiling type demolding assembly (2) includes a plurality of ejector rods (21) rotatably connected to the mounting plates (17). The upper mold (14) and the lower mold (15) are slidably connected to the corresponding ejector rods (21). A plurality of rotating disks (22) are installed on the ejector rods (21), and oil injection ports (23) are formed in the rotating disks (22). A negative pressure suction cup (24) is embedded and installed at the top of the ejector rod (21) on the lower mold (15). A linkage type support assembly (3) is arranged on the installation frame (12).

2. The continuous stamping die for manufacturing a vehicle hood according to claim 1, characterized in that, An activity plate is slidably connected inside the limiting sleeve (11), and an electric push rod (18) is fixedly installed between the activity plate and the limiting sleeve (11). An activity column (19) is connected between the activity plate and the top plate (13), and a first guiding pin (110) is symmetrically fixed on the outer wall of the activity column (19).

3. The continuous stamping die for manufacturing a vehicle hood according to claim 2, characterized in that, A rotating sleeve (111) rotatably connected to the limiting sleeve (11) is fixedly connected to the installation frame (12). A vertical groove (112) for the first guiding pin (110) to slide is formed on the inner side wall of the rotating sleeve (111), and a triangular groove (113) is communicated between the tops of the vertical grooves (112).

4. A continuous stamping die for manufacturing a vehicle hood according to claim 3, characterized in that, A limiting groove (114) is formed on the outer side wall of the rotating sleeve (111). A spring piece (115) is fixedly connected to the top of the limiting sleeve (11), and a convex part adapted to the limiting groove (114) is arranged on the spring piece (115).

5. A continuous stamping die for manufacturing a vehicle hood according to claim 1, characterized in that, An oil inlet cavity penetrating through one end of the ejector rod (21) is formed inside the ejector rod (21). An installation groove for rotatably installing the corresponding rotating disk (22) and an activity groove communicated with the installation groove are formed through the annular side wall of the oil inlet cavity. An L-shaped rod (25) is slidably connected in the activity groove. A second guiding pin (26) is eccentrically fixed on one side of the rotating disk (22). A notch for the second guiding pin (26) to slide is formed on the L-shaped rod (25).

6. A continuous stamping and forming die for manufacturing a vehicle hood according to claim 5, characterized in that, An auxiliary sleeve (27) is arranged outside the ejector rod (21), and the auxiliary sleeve (27) is fixedly connected to the mounting plate (17) through a support rod. A wave groove (28) is formed on the inner side wall of the auxiliary sleeve (27). A third guiding pin (29) slidably connected to the wave groove (28) is fixedly connected to the L-shaped rod (25).

7. A continuous stamping die for manufacturing a vehicle hood according to claim 1, characterized in that, A secondary sprocket is fixedly installed on the ejector rod (21). A motor is fixedly installed on the mounting plate (17), and a main sprocket is installed on the output shaft of the motor. The main sprocket and a plurality of secondary sprockets are connected through a chain drive.

8. A continuous stamping and forming die for manufacturing a vehicle hood according to claim 1, characterized in that, The installation plate (17) is provided with a second oil injection pipe, and the second oil injection pipe is communicated with the corresponding ejector rod (21) through a rotary joint. The installation frame (12) and the top plate (13) are both fixedly installed with oil storage tanks, and an oil suction pump is installed in the liquid storage tank. The liquid outlet of the oil suction pump is communicated with the second oil injection pipe through a first oil injection pipe.

9. A continuous stamping and forming die for manufacturing a vehicle hood according to claim 1, characterized in that, The linkage support assembly (3) includes a U-shaped frame (31) fixedly connected to the bottom of the installation frame (12), and a fixed frame (32) is fixedly connected to the U-shaped frame (31). A slider (33) is slidably connected in the fixed frame (32), and a push rod (34) is hinged between the slider (33) and the corresponding installation plate (17). The bottom of the slider (33) is fixedly connected with a support rod (35), and a ball is rotatably embedded at the bottom of the support rod (35). The top of the installation seat (1) is fixedly connected with an arc-shaped guide block (36).

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