Integrated punch forming die for automobile door frame

Abstract

The automobile door frame integrated punch forming die comprises a punching die, a first clamping groove is formed in the outer edge of the punching die, a supporting frame is connected into the first clamping groove in a clamped mode, and vent grooves are formed in the four sides of the upper end of the supporting frame. Through combined arrangement of the first connector and the heating wire, during use, air is sprayed out through the vent groove, an air film is formed between the stamping die and a steel plate, the steel plate does not make direct contact with the stamping die, and therefore no friction exists between the steel plate and the stamping die, and the stamping die is prevented from being abraded; the forming quality of the automobile door frame and the service life of the stamping die are guaranteed, gas is heated through the heating wire, the steel plate is heated through flowing of airflow on the steel plate, the steel plate can be bent more easily under stress, integrated stamping forming is facilitated, the machining efficiency is improved, and the mode is low in cost and easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of automobile door frame production, in particular to an integrated stamping mold for an automobile door frame. Background Art

[0002] Stamping is a forming method that uses a press and a die to apply external force to plates, strips, tubes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining a workpiece (stamping part) of the desired shape and size.

[0003] In the prior art, for example, Chinese patent CN107159814A discloses an automatic punching production line for inner and outer panels of automobile door frames, comprising a loading platform, a first punch press, a flipping platform, a second punch press and a robotic arm, wherein the robotic arm crosses the first punch press and the second punch press, and is used to move the inner and outer panel workpieces from the loading platform to the first punch press, the flipping platform and the second punch press in sequence; the flipping platform is provided between the first punch press and the second punch press, and is used to flip the workpiece removed by the robotic arm from the first punch press by 180°, so that the robotic arm can move the flipped workpiece to the second punch press.

[0004] However, in the prior art, when producing automobile door frames, the unwinding steel plates are straightened and then conveyed to a stamping machine through conveying equipment, and the plates are stamped into shape by stamping to form automobile door frames. The steel plates are conveyed by conveying equipment on both sides of the stamping die to move the steel plates. During the movement, there is friction between the steel plates and the surface of the die, resulting in depressions on the surface of the stamping die due to friction during long-term processing, thereby affecting the processing and production, and causing the quality of the stamped automobile door frames to be poor. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated stamping and forming die for automobile door frames, so as to solve the problem that the automobile door frames proposed in the above-mentioned background technology are produced by straightening the unwinding steel plates, conveying them to a stamping machine through conveying equipment, and stamping the plates to form automobile door frames. The steel plates are conveyed by conveying equipment on both sides of the stamping die to move the steel plates. During the movement, there is friction between the steel plates and the surface of the die, resulting in depressions on the surface of the stamping die due to friction during long-term processing, thereby affecting the processing and production, and causing the quality of the stamped automobile door frames to be poor.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated stamping mold for automobile door frames, comprising a stamping mold, a No. 1 card slot is provided at the outer edge of the stamping mold, a support frame is clamped inside the No. 1 card slot, ventilation grooves are provided on the four sides of the upper end of the support frame, heating wires are fixedly connected to the four side edges at the outer edge of the upper end of the stamping mold, a miter box is fixedly connected to the middle and lower parts of the four side faces of the support frame, a No. 1 connecting port is fixedly connected to the middle of one side of the miter box, a connecting cavity is provided at the middle and lower parts of the four side faces of the support frame, the miter box is connected to the connecting cavity, a stamping cavity is provided at the upper end of the stamping mold, the No. 1 connecting port is used to connect to an air pump, and through the combination of the No. 1 connecting port and the heating wire, when in use, through the connecting port The gas is sprayed out from the air groove to form a thin air film between the stamping die and the steel plate, so that the steel plate and the stamping die are not in direct contact, so that there is no friction between the steel plate and the stamping die, and the wear of the stamping die is avoided, thereby ensuring the forming quality of the automobile door frame and the service life of the stamping die. The gas is heated by the heating wire, and the steel plate is heated by the flow of airflow on the steel plate, so that the steel plate can be more easily bent under force, which is convenient for integrated stamping and improving processing efficiency. This method is low in cost and simple to use. The support frame is set up and separated from the stamping die. When it is damaged or bumped and needs to be replaced, the cost is low and the replacement is relatively simple. Because the support frame is not a necessary component for stamping, low-cost materials can be selected for production to reduce replacement and maintenance costs.

[0007] Preferably, the connecting cavity and the miter box are both of inclined design, which can make the ejected gas fully contact with the heating wire, thereby ensuring the heating effect of the gas and thus ensuring the heating effect of the steel plate.

[0008] Preferably, the four corners inside the support frame are fixedly connected with extension blocks, a mounting groove is provided inside the extension block, a No. 1 threaded hole is provided at the upper end of the stamping die, a fixing bolt is installed between the mounting groove and the No. 1 threaded hole, and the extension block is provided to ensure the strength of the support frame to avoid bending of the support frame due to excessive force during installation.

[0009] Preferably, a No. 1 sealing ring is fixedly connected to the upper end of the No. 1 slot, a No. 2 slot is provided at the upper end of the stamping die, and the inner edge of the support frame overlaps the No. 2 slot.

[0010] Preferably, a No. 2 sealing ring is fixedly connected to the upper surface of the No. 2 card slot. The arrangement of the No. 1 sealing ring and the No. 2 sealing ring can, on the one hand, ensure that the gas does not flow out from the side and ensure the gas pressure of the vent groove; on the other hand, provide a buffer space for the support frame. When the upper surface of the support frame is not horizontal, the impact of the upper mold seat can move the support frame downward, squeezing the No. 1 sealing ring and the No. 2 sealing ring to avoid damage to the support frame. When movement of the support frame is observed during stamping, it means that it is not installed properly, prompting employees to readjust and install it.

[0011] Preferably, loading cavities are provided on both sides of the middle part of one side of the upper end of the stamping die, and both ends of the loading cavity are fixedly connected to limiting sliding rods.

[0012] Preferably, an assembly frame is provided inside the loading cavity, and both ends of the assembly frame are slidably connected to the limiting sliding rod. An oiling roller is rotatably connected inside the assembly frame. Through the setting of the oiling roller, oil can be applied to the surface of the steel plate, thereby promoting sliding between the steel plate and the stamping cavity, which is convenient for demolding on the one hand, and can reduce friction and wear on the other hand.

[0013] Preferably, an oil cavity is provided inside the assembly frame, the outer edge of the oil coating roller is located inside the assembly frame, and a No. 2 connection port is fixedly connected to the lower end of the assembly frame, and the No. 2 connection port is communicated with the oil cavity.

[0014] Preferably, a spring is fixedly connected between the lower end of the assembly frame and the lower end of the loading chamber, a connecting inner groove is opened at the middle lower end of the loading chamber, and the No. 2 connecting port is located inside the connecting inner groove. The spring is set to ensure that the oiling roller can contact the surface of the steel plate, and can also ensure that the oiling roller can move into the loading chamber during stamping, thereby avoiding damage to the oiling roller and the assembly frame.

[0015] Preferably, side grooves are provided on both sides of the middle part of one side of the stamping die, the connecting inner groove is connected with the side grooves, a ventilation cavity is provided in the middle part of one side of the stamping die, the ventilation cavity is located between the two loading cavities, and No. 2 threaded holes are provided on both sides of the upper end of the assembly frame. The ventilation cavity is provided, and the gas sprayed from the ventilation groove can assist the flow of oil and facilitate the flow of oil to the surface of the steel plate. The side grooves and the connecting inner grooves are provided to ensure that during stamping, the pipeline connected to the No. 2 connecting port has sufficient moving space to avoid damage to the pipeline.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, through the combination of the No. 1 connection port and the heating wire, when in use, gas is sprayed through the ventilation groove to form a layer of air film between the stamping die and the steel plate, so that the steel plate and the stamping die are not in direct contact, so that there is no friction between the steel plate and the stamping die, and the wear of the stamping die is avoided, thereby ensuring the molding quality of the automobile door frame and the service life of the stamping die. The gas is heated by the heating wire, and the steel plate is heated by the flow of airflow on the steel plate, so that the steel plate can be more easily bent under force, which is convenient for integrated stamping and improving processing efficiency. The method is low in cost and simple to use. The support frame is separated from the stamping die. When it is damaged or bumped and needs to be replaced, the cost is low and the replacement is simple. Because the support frame is not a necessary component for stamping, a low-cost material can be selected for production to reduce the replacement and maintenance costs. The miter box adopts an inclined design, which can make the sprayed gas fully contact with the heating wire, thereby ensuring the heating effect of the gas and the heating effect of the steel plate.

[0017] 2. In the present invention, the extension block is provided to ensure the strength of the support frame to avoid bending the support frame due to excessive force during installation. The No. 1 sealing ring and the No. 2 sealing ring are provided to ensure that the gas does not flow out from the side and the gas pressure of the vent groove is ensured. On the other hand, a buffer space is provided for the support frame. When the upper surface of the support frame is not level, the impact of the upper die seat can move the support frame downward to squeeze the No. 1 sealing ring and the No. 2 sealing ring to avoid damage to the support frame. When the support frame is observed to move during stamping, it means that it is not installed properly, which prompts the employee to readjust and install it.

[0018] 3. In the present invention, by setting the oiling roller, oil can be applied to the surface of the steel plate, thereby promoting the sliding between the steel plate and the stamping cavity, which is convenient for demoulding on the one hand, and can reduce friction and wear on the other hand. The spring is set to ensure that the oiling roller can contact the surface of the steel plate, and can also ensure that the oiling roller can move into the loading cavity during stamping to avoid damage to the oiling roller and the assembly frame. The ventilation cavity is set, and the gas sprayed from the ventilation groove can help the flow of oil, which facilitates the flow of oil to the surface of the steel plate. The side extension groove and the connecting inner groove are set to ensure that the pipeline connected to the No. 2 connecting port has sufficient moving space during stamping to avoid damage to the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the integrated stamping die for the automobile door frame of the present invention is shown in FIG. Figure 1 ; Figure 2 The three-dimensional structure of the integrated stamping die for the automobile door frame of the present invention is shown in FIG. Figure 2 ; Figure 3This is an exploded view of an integrated stamping die for an automobile door frame according to the present invention; Figure 4 It is a schematic diagram of the internal structure of a stamping die in an integrated stamping die for an automobile door frame of the present invention; Figure 5 This is a stamping die for an integrated automobile door frame. Figure 4 A schematic diagram of the enlarged structure of the middle A area; Figure 6 It is a schematic diagram of the three-dimensional structure of a support frame in an integrated stamping and forming die for an automobile door frame according to the present invention; Figure 7 This is an exploded view of the connection state of the assembly frame and the oiling roller in the integrated stamping and forming die of the automobile door frame of the present invention; Figure 8 This is a stamping die for an integrated automobile door frame. Figure 7 Schematic diagram of the enlarged structure of area B in the middle.

[0020] In the figure: 1. Stamping die; 2. Support frame; 3. Miter box; 4. No. 1 connection port; 5. Stamping cavity; 6. Mounting slot; 7. Fixing bolt; 8. Ventilation slot; 9. Oiling roller; 10. Ventilation cavity; 11. Side extension slot; 12. Heating wire; 13. No. 1 card slot; 14. No. 2 card slot; 15. No. 1 sealing ring; 16. No. 2 sealing ring; 17. Loading cavity; 18. Connecting inner groove; 19. Limiting slide bar; 20. No. 1 threaded hole; 21. Extension block; 22. Connecting cavity; 23. Assembly frame; 24. Spring; 25. Oil cavity; 26. No. 2 connection port; 27. No. 2 threaded hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1 - Figure 6As shown: an integrated stamping mold for an automobile door frame, comprising a stamping mold 1, a No. 1 card slot 13 is provided at the outer edge of the stamping mold 1, a support frame 2 is clamped inside the No. 1 card slot 13, ventilation grooves 8 are provided on the four sides of the upper end of the support frame 2, heating wires 12 are fixedly connected to the four side edges at the outer edge of the upper end of the stamping mold 1, a miter box 3 is fixedly connected to the middle and lower parts of the four side faces of the support frame 2, a No. 1 connecting port 4 is fixedly connected to the middle of one side of the miter box 3, a connecting cavity 22 is provided at the lower parts of the middle parts of the four side faces of the support frame 2, the miter box 3 is connected to the connecting cavity 22, a stamping cavity 5 is provided at the upper end of the stamping mold 1, the connecting cavity 22 and the miter box 3 are both inclined designs, and the No. 1 connecting port 4 is used to connect to an air pump.

[0023] In the present invention, through the combination of the No. 1 connection port 4 and the heating wire 12, when in use, gas is sprayed through the ventilation groove 8, so that a layer of air film is formed between the stamping die 1 and the steel plate, so that the steel plate and the stamping die 1 are not in direct contact, so that there is no friction between the steel plate and the stamping die 1, and the wear of the stamping die 1 is avoided, thereby ensuring the molding quality of the automobile door frame and the service life of the stamping die 1. The gas is heated by the heating wire 12, and the steel plate is heated by the flow of the airflow on the steel plate, so that the steel plate can be more easily bent under force, which is convenient for integrated stamping and forming, and the processing efficiency is improved. The method is low in cost and simple to use. The support frame 2 is set to be separated from the stamping die 1. When it is damaged or bumped and needs to be replaced, the cost is low and the replacement is simple. Because the support frame 2 is not a necessary component for stamping, a low-cost material can be selected for production to reduce the replacement and maintenance costs. The miter box 3 adopts an inclined design, which can make the sprayed gas fully contact with the heating wire 12, thereby ensuring the heating effect of the gas, thereby ensuring the heating effect of the steel plate.

[0024] Embodiment 2: Figure 1 - Figure 6 As shown, the four corners inside the support frame 2 are fixedly connected with extension blocks 21, and a mounting groove 6 is provided inside the extension block 21. A No. 1 threaded hole 20 is provided at the upper end of the stamping die 1, and a fixing bolt 7 is installed between the mounting groove 6 and the No. 1 threaded hole 20. A No. 1 sealing ring 15 is fixedly connected to the upper end of the No. 1 slot 13. A No. 2 slot 14 is provided at the upper end of the stamping die 1. The inner edge of the support frame 2 overlaps with the No. 2 slot 14, and a No. 2 sealing ring 16 is fixedly connected to the upper surface of the No. 2 slot 14.

[0025] In the present invention, the extension block 21 is provided to ensure the strength of the support frame 2 to avoid bending the support frame 2 due to excessive force during installation. The No. 1 sealing ring 15 and the No. 2 sealing ring 16 are provided to ensure that the gas does not flow out from the side and ensure the gas pressure of the vent groove 8. On the other hand, a buffer space is provided for the support frame 2. When the upper surface of the support frame 2 is not horizontal, the impact of the upper mold seat can move the support frame 2 downward to squeeze the No. 1 sealing ring 15 and the No. 2 sealing ring 16 to avoid damage to the support frame 2. When it is observed that the support frame 2 moves during stamping, it means that it is not installed properly, and the employee is prompted to readjust and install it.

[0026] Embodiment 3: According to Figure 1 - Figure 8 As shown, a loading cavity 17 is provided on both sides of the middle part of one side of the upper end of the stamping die 1, and both ends of the loading cavity 17 are fixedly connected to the limit slide bar 19, and an assembly frame 23 is provided inside the loading cavity 17, and both ends of the assembly frame 23 are slidably connected to the limit slide bar 19, and the assembly frame 23 is rotatably connected to the oiling roller 9, and an oil cavity 25 is provided inside the assembly frame 23, and the outer edge of the oiling roller 9 is located in the assembly frame 23, and the lower end of the assembly frame 23 is fixedly connected to the second connection port 26, and the second connection port 26 is communicated with the oil cavity 25, and the lower end of the assembly frame 23 is connected to the loading cavity 1 A spring 24 is fixedly connected between the lower ends of 7, a connecting inner groove 18 is opened at the lower end of the middle of the loading cavity 17, and the No. 2 connecting port 26 is located inside the connecting inner groove 18. Side grooves 11 are opened on both sides of the middle of one side of the stamping die 1, and the connecting inner groove 18 is connected with the side groove 11. A ventilation cavity 10 is opened in the middle of one side of the stamping die 1, and the ventilation cavity 10 is located between the two loading cavities 17. No. 2 threaded holes 27 are opened on both sides of the upper end of the assembly frame 23, and the No. 2 connecting port 26 is used to connect with the oil supply equipment, and the pipeline is arranged in the connecting inner groove 18 and the side groove 11.

[0027] In the present invention, by setting the oiling roller 9, oil can be applied to the surface of the steel plate, thereby promoting the sliding between the steel plate and the stamping cavity 5, which is convenient for demoulding on the one hand, and can reduce friction and wear on the other hand. The spring 24 is set to ensure that the oiling roller 9 can contact the surface of the steel plate, and can also ensure that the oiling roller 9 can move into the loading cavity 17 during stamping, avoiding damage to the oiling roller 9 and the assembly frame 23. The ventilation cavity 10 is set, and the gas sprayed from the ventilation groove 8 can assist the flow of oil and facilitate the flow of oil to the surface of the steel plate. The side extension groove 11 and the connecting inner groove 18 are set to ensure that the pipeline connected to the No. 2 connecting port 26 has sufficient moving space during stamping to avoid damage to the pipeline.

[0028] The use method and working principle of this device: When in use, turn on the heating wire 12 and the air pump, and the oil pump supplies oil to allow the oil to enter the oil chamber 25. Through the movement of the steel plate, the oiling roller 9 will rotate together by friction, and the oiling roller 9 absorbs the oil in the oil chamber 25 and applies the oil to the surface of the steel plate. The gas ejected from the ventilation groove 8 and the ventilation cavity 10 is used to promote the flow of oil on the one hand, and on the other hand, there is a gap between the steel plate and the upper surface of the stamping die 1 to avoid direct contact between the steel plate and the stamping die 1. The heating wire 12 heats the airflow in the support frame 2, so that the airflow ejected from the ventilation groove 8 is a hot airflow, and the hot airflow heats the steel plate. After the steel plate moves to a suitable distance, the stamping equipment drives the upper die seat to stamp downward, and the steel plate is stamped through the stamping cavity 5 to form a car door frame. The stamped door frame is then taken out, and the steel plate continues to move for processing and production.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated stamping die for an automobile door frame, comprising a stamping die (1), characterized in that: The outer edge of the punching die (1) is provided with a No. 1 card slot (13), the interior of the No. 1 card slot (13) is carded with a support frame (2), the four sides of the upper end of the support frame (2) are provided with ventilation slots (8), the four side edges at the outer edge of the upper end of the punching die (1) are fixedly connected to heating wires (12), the middle and lower parts of the four side faces of the support frame (2) are fixedly connected to a miter box (3), the middle part of one side of the miter box (3) is fixedly connected to a No. 1 connection port (4), the middle and lower parts of the four side faces of the support frame (2) are provided with a connecting cavity (22), the miter box (3) is connected to the connecting cavity (22), and the upper end of the punching die (1) is provided with a punching cavity (5).

2. The automobile door frame integrated stamping die according to claim 1, characterized in that: The communicating cavity (22) and the miter box (3) are both of inclined design.

3. The automobile door frame integrated stamping die according to claim 1, characterized in that: The four corners inside the support frame (2) are fixedly connected to extension blocks (21), the extension block (21) has a mounting groove (6) extending therethrough, the upper end of the stamping die (1) has a No. 1 threaded hole (20), and a fixing bolt (7) is installed between the mounting groove (6) and the No. 1 threaded hole (20).

4. The automobile door frame integrated stamping die according to claim 1, characterized in that: The upper end of the No. 1 clamping groove (13) is fixedly connected to a No. 1 sealing ring (15), the upper end of the stamping die (1) is provided with a No. 2 clamping groove (14), and the inner edge of the support frame (2) overlaps the No. 2 clamping groove (14).

5. The automobile door frame integrated stamping die according to claim 4, characterized in that: A second sealing ring (16) is fixedly connected to the upper surface of the second clamping slot (14).

6. The automobile door frame integrated stamping die according to claim 1, characterized in that: A loading cavity (17) is provided on both sides of the middle portion of one side of the upper end of the punching die (1), and both ends of the loading cavity (17) are fixedly connected to a limiting sliding rod (19).

7. The automobile door frame integrated stamping die according to claim 6, characterized in that: An assembly rack (23) is arranged inside the loading chamber (17), both ends of the assembly rack (23) are slidably connected to the limiting sliding rod (19), and an oiling roller (9) is rotatably connected inside the assembly rack (23).

8. The automobile door frame integrated stamping die according to claim 7, characterized in that: An oil chamber (25) is provided inside the assembly frame (23), the outer edge of the oil coating roller (9) is located inside the assembly frame (23), and a second connection port (26) is fixedly connected to the lower end of the assembly frame (23), the second connection port (26) being in communication with the oil chamber (25).

9. The automobile door frame integrated stamping die according to claim 8, characterized in that: A spring (24) is fixedly connected between the lower end of the assembly frame (23) and the lower end of the loading chamber (17); a connecting inner groove (18) is provided at the middle lower end of the loading chamber (17); and the second connecting port (26) is located inside the connecting inner groove (18).

10. The integrated stamping die for automobile door frame according to claim 9, characterized in that: Side grooves (11) are provided on both sides of the middle of one side of the punching die (1), the connecting inner groove (18) is connected to the side grooves (11), a ventilation cavity (10) is provided on the middle of one side of the punching die (1), the ventilation cavity (10) is located between the two loading cavities (17), and No. 2 threaded holes (27) are provided on both sides of the upper end of the assembly frame (23).

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