Car door stamping die facilitating discharging

Abstract

The vehicle door stamping die comprises a machine frame arranged on a base plate, a lifting plate connected with a lifting mechanism is arranged in the machine frame, a male die is arranged at the bottom of the lifting plate, a female die is arranged below the male die, the female die comprises a die groove, and an ejection opening is formed in the bottom of the die groove. A movable plate in sliding connection with the base plate is spliced in the ejection opening, an ejection part is arranged below the movable plate, the ejection part comprises a plurality of rollers movably connected into the mounting frame, and a second air cylinder with the stroke end connected with the mounting frame is mounted on the base plate. According to the utility model, through the arrangement of the female die, the electric push rod and the top extension piece, the vehicle door and the die groove are convenient to disassemble, the contact area between the top extension piece and the surface of the vehicle door is enlarged, and the pressure of unit area is reduced under the condition of keeping the same pressure, so that the surface of the vehicle door is effectively prevented from being damaged; and the vehicle door forming quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle door molding, in particular to a vehicle door stamping die which is convenient for unloading. Background Art

[0002] A car door stamping die is a press-forming method that uses a die mounted on a press to apply pressure to the material at room temperature, causing it to separate or plastically deform, thereby producing the desired car door. An existing patent (Announcement No.: CN220574500U) discloses a car door panel stamping die with an ejection mechanism. This utility model employs ejector pins that move upward, applying an upward force to the stamped door, thereby separating it from the die and improving the die's unloading efficiency. However, in practice, even if the ejector pins are evenly distributed, the effective surface area of the ejector pin tips is relatively small. Under the same pressure, the smaller the effective area, the greater the pressure per unit area. This can easily damage the surface of the newly formed car door, hindering practical application. To address this issue, we have proposed a car door stamping die that facilitates unloading. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a vehicle door stamping die which is convenient for unloading.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A car door stamping die that is convenient for unloading is designed, comprising a frame arranged on a base plate, a lifting plate connected to a lifting mechanism provided in the frame, a punch provided at the bottom of the lifting plate, a die provided below the punch, the die including a die groove with a top outlet provided at the bottom, the die groove being erected on the base plate through a mounting plate (17), a movable plate slidably connected to the base plate being assembled in the top outlet, a top extension member provided below the movable plate, the top extension member including a plurality of rollers movably connected to the mounting frame, and a cylinder 2 connected to the mounting frame at a stroke end being mounted on the base plate.

[0006] In the above solution, the lifting mechanism includes a cylinder 1 installed on the top of the frame, the stroke end of the cylinder 1 is connected to the lifting plate, and a lifting rod that movably penetrates the frame is fixed on the top of the lifting plate.

[0007] In the above solution, a support plate is fixed to the side of the base plate, an assembly frame is fixed to the bottom of the movable plate, and an electric push rod with a stroke end detachably connected to the assembly frame is installed on the support plate.

[0008] In the above solution, the end of the electric push rod is sleeved with a mounting cylinder, a docking cylinder is fixed on the assembly frame, and electromagnets are fixed inside the docking cylinder and outside the mounting cylinder, and adjacent electromagnets carry opposite magnetism.

[0009] In the above solution, support rods are symmetrically fixed to the bottom of the assembly frame, pulleys are installed at the bottom ends of the support rods, and sliding grooves matching the pulleys are opened on the base plate.

[0010] In the above solution, a splicing block is fixed to the inner wall of the top outlet, and a splicing groove cooperating with the splicing block is provided on the side wall of the movable plate.

[0011] In the above solution, elastic telescopic rods fixed to the mounting frame are provided on both sides of the second cylinder, and the elastic telescopic rods include a sleeve with a movable rod arranged therein, and a spring is connected between the bottom of the movable rod and the sleeve.

[0012] The advantages and beneficial effects of the present invention are as follows: by arranging a die, an electric push rod and a top extension, the car door will remain in the die after being stamped and formed, actually in the mold groove, and by controlling the length of the electric push rod to shorten, the movable plate is moved horizontally and separated from the top outlet, so that the bottom of the car door is directly exposed from the mold groove, and at this time, by controlling the extension of the second piston rod of the cylinder, the roller is gradually raised upward along with the mounting frame, and the car door can be moved upward and separated from the mold groove by applying an upward force to the car door. Compared with the existing technology, it is not only convenient to disassemble the car door and the mold groove, but also expands the contact area between the top extension and the car door surface, and then reduces the pressure per unit area while maintaining the same pressure, thereby effectively preventing damage to the surface of the car door, which is beneficial to improving the quality of car door molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is a schematic structural diagram of a vehicle door stamping die that is easy to unload, as proposed by the present invention;

[0015] Figure 2 This is a schematic diagram of the specific structure of a female die of a vehicle door stamping die that is easy to unload, as proposed by the present invention;

[0016] Figure 3 This is a structural schematic diagram of a top extension piece of a vehicle door stamping die that is convenient for unloading, proposed by the present invention;

[0017] Figure 4 The utility model is a structural schematic diagram of an elastic telescopic rod of a vehicle door stamping die for facilitating unloading.

[0018] In the figure: base plate 1, frame 2, lifting plate 3, cylinder 1 4, lifting rod 5, punch 6, die 7, mold groove 71, ejector outlet 72, movable plate 73, splicing block 74, splicing groove 75, ejector 8, mounting frame 81, roller 82, cylinder 2 83, elastic telescopic rod 84, sleeve 841, movable rod 842, spring 843, electric push rod 9, assembly frame 10, mounting tube 11, docking tube 12, electromagnet 13, support rod 14, pulley 15, sliding groove 16, mounting plate 17, support plate 18. DETAILED DESCRIPTION

[0019] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] See also Figure 1-4 , the utility model provides a technical solution: a car door stamping die that is easy to unload, comprising a frame 2 arranged on a base plate 1, a lifting plate 3 connected to a lifting mechanism is provided in the frame 2;

[0021] Furthermore, the lifting mechanism includes a cylinder 4 mounted upside down on the top of the frame 2, the stroke end of the cylinder 4 is connected to the lifting plate 3, the piston rod of the cylinder 4 is connected to the center of the top of the lifting plate 3, and a lifting rod 5 that movably penetrates the frame 2 is vertically fixed on the top of the lifting plate 3. The lifting rod 5 is located at the four corners of the lifting plate 3, and a socket that cooperates with the lifting rod 5 is opened on the top of the frame 2. A limiting handle with a radius larger than the socket is provided on the top of the lifting rod 5 to prevent the lifting rod 5 from detaching from the frame 2. The use of the lifting rod 5 can not only provide sufficient support for the lifting plate 3, but also further limit the moving trajectory of the lifting plate 3, thereby making the lifting plate 3 move vertically up and down;

[0022] A male mold 6 is mounted at the bottom of the lifting plate 3, and a female mold 7 is mounted below the male mold 6. The female mold 7 includes a mold groove 71 with a top outlet 72 at the bottom. The top outlet 72 has an area smaller than the vehicle door. The mold groove 71 is supported on the base plate 1 by a mounting plate 17. The mounting plate 17 is used to reserve sufficient space between the mold groove 71 and the base plate 1 to accommodate the extension member 8 described below. A movable plate 73 is assembled in the top outlet 72 and is slidably connected to the base plate 1.

[0023] Specifically, when the lifting plate 3 moves downward under the action of the cylinder 1 4, the punch 6 and the die 7 are closed, thereby stamping the door. At this time, the door is located in the die 7. By pulling the moving plate 73 out of the die groove 71, the bottom of the door can be exposed from the top outlet 72.

[0024] Furthermore, a support plate 18 is fixed to the side of the base plate 1, an assembly rack 10 is fixed to the bottom of the movable plate 73, and an electric push rod 9 is mounted on the support plate 18, which is detachably connected to the assembly rack 10 at the stroke end; by controlling the piston rod of the electric push rod 9 to shorten, the assembly rack 10 can drive the movable plate 73 to be withdrawn from the mold groove 71;

[0025] Furthermore, the end of the electric push rod 9 is sleeved with a mounting cylinder 11, and a docking cylinder 12 is fixed on the assembly frame 10. Electromagnets 13 are fixed inside the docking cylinder 12 and outside the mounting cylinder 11. Adjacent electromagnets 13 carry opposite magnetism, wherein the electromagnets 13 and the docking cylinder 12 fit together.

[0026] Specifically, such as Figure 2 As shown, the mounting cylinder 11 can be threadedly connected to the end piston rod of the electric push rod 9, or can be fixed to the end piston rod of the electric push rod 9. When the electromagnet 13 on the mounting cylinder 11 is inserted into the docking cylinder 12, the magnetic adsorption force between adjacent electromagnets 13 is utilized to stably connect the electric push rod 9 and the assembly frame 10. If the electric push rod 9 and the assembly frame 10 need to be disassembled, it is only necessary to cut off the power to the electromagnet 13 to make the electromagnet 13 lose its magnetism, so as to separate the electric push rod 9 and the assembly frame 10, thereby facilitating disassembly.

[0027] Furthermore, support rods 14 are symmetrically fixed to the bottom of the assembly frame 10, and pulleys 15 are installed at the bottom ends of the support rods 14. Sliding grooves 16 that match the pulleys 15 are opened on the base plate 1. The pulleys 15 and the sliding grooves 16 can not only provide support for the movable plate 73, but also enable the movable plate 73 to move smoothly on the base plate 1.

[0028] Furthermore, a splicing block 74 is fixed to the inner wall of the ejection outlet 72, and a splicing groove 75 is provided on the side wall of the movable plate 73 to cooperate with the splicing block 74. The splicing block 74 and the splicing groove 75 allow the movable plate 73 and the ejection outlet 72 to be spliced together, thereby increasing the contact area and improving the tightness of the connection between the movable plate 73 and the ejection outlet 72, thereby minimizing the gap in the mold groove 71 and improving the quality of the vehicle door molding.

[0029] A top extension 8 is provided below the movable plate 73. The top extension 8 includes a plurality of rollers 82 movably connected to a mounting frame 81. The two ends of the rollers 82 are movably connected to the mounting frame 81 via rotating shafts. A second cylinder 83 connected to the mounting frame 81 at its stroke end is vertically mounted on the base plate 1. The piston rod of the second cylinder 83 is connected to the bottom center of the mounting frame 81. The rollers 82 are in direct contact with the door surface, greatly increasing the contact area between the door surface and the top extension 8.

[0030] Furthermore, elastic telescopic rods 84 fixed to the mounting frame 81 are provided on both sides of the second cylinder 83. The elastic telescopic rods 84 include a sleeve 841 with a movable rod 842 therein. A spring 843 is connected between the bottom of the movable rod 842 and the sleeve 841. The top of the movable rod 842 is connected to the bottom of the mounting frame 81. The elastic telescopic rods 84 are used to coordinate the lifting and lowering of the mounting frame 81 and provide sufficient support for the mounting frame 81.

[0031] Specifically, by setting the die 7, the electric push rod 9 and the top extension 8, the car door will remain in the die 7 after being stamped and formed, and actually remain in the mold groove 71. By controlling the length of the electric push rod 9 to shorten, the movable plate 73 is moved horizontally and separated from the top outlet 72, so that the bottom of the car door is directly exposed to the mold groove 71. At this time, by controlling the extension of the piston rod of cylinder 2 83, the roller 82 is gradually raised upward along with the mounting frame 81, and the car door can be moved upward and separated from the mold groove 71 by applying an upward force to the car door. Compared with the existing technology, it is not only convenient to disassemble the car door and the mold groove 71, but also expands the contact area between the top extension 8 and the car door surface, and then reduces the pressure per unit area while maintaining the same pressure, thereby effectively preventing damage to the surface of the car door, which is beneficial to improving the quality of car door molding.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A door stamping die that is easy to unload, comprising a frame (2) arranged on a base plate (1), characterized in that: A lifting plate (3) connected to a lifting mechanism is provided in the frame (2); a convex mold (6) is provided at the bottom of the lifting plate (3); a concave mold (7) is provided below the convex mold (6); the concave mold (7) includes a mold groove (71) with a top outlet (72) at the bottom; the mold groove (71) is erected on the base plate (1) through a mounting plate (17); a movable plate (73) slidably connected to the base plate (1) is assembled in the top outlet (72); a top extension member (8) is provided below the movable plate (73); the top extension member (8) includes a plurality of rollers (82) movably connected to a mounting frame (81); and a second cylinder (83) is installed on the base plate (1) with a stroke end connected to the mounting frame (81).

2. A car door stamping die that is easy to unload according to claim 1, characterized in that: The lifting mechanism comprises a cylinder (4) mounted on the top of the frame (2); the stroke end of the cylinder (4) is connected to the lifting plate (3); and a lifting rod (5) movably penetrating the frame (2) is fixed on the top of the lifting plate (3).

3. The vehicle door stamping die that is easy to unload according to claim 1, characterized in that: A support plate (18) is fixed to the side of the base plate (1), an assembly frame (10) is fixed to the bottom of the movable plate (73), and an electric push rod (9) is installed on the support plate (18) and is detachably connected to the assembly frame (10) at its stroke end.

4. A car door stamping die that is easy to unload according to claim 3, characterized in that: The end of the stroke end of the electric push rod (9) is sleeved with a mounting cylinder (11), and a docking cylinder (12) is fixed on the assembly frame (10). Electromagnets (13) are fixed inside the docking cylinder (12) and outside the mounting cylinder (11), and adjacent electromagnets (13) carry opposite magnetism.

5. The vehicle door stamping die that is easy to unload according to claim 3, characterized in that: A support rod (14) is symmetrically fixed to the bottom of the assembly frame (10), a pulley (15) is installed at the bottom end of the support rod (14), and a sliding groove (16) matching the pulley (15) is opened on the base plate (1).

6. The vehicle door stamping die that is easy to unload according to claim 1, characterized in that: A splicing block (74) is fixed on the inner wall of the top outlet (72), and a splicing groove (75) matching with the splicing block (74) is provided on the side wall of the movable plate (73).

7. The vehicle door stamping die for easy unloading according to claim 1, characterized in that: Elastic telescopic rods (84) fixed to the mounting frame (81) are provided on both sides of the second cylinder (83). The elastic telescopic rods (84) include a sleeve (841) with a movable rod (842) therein, and a spring (843) is connected between the bottom of the movable rod (842) and the sleeve (841).

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