Automobile door panel stamping device

Abstract

The application relates to the field of automobile manufacturing and discloses an automobile door plate stamping device, which is internally provided with a support assembly for assisting door plate raw material forming and demolding. According to the scheme, a diaphragm is installed in the lower die, and before stamping, a gas charging device is operated to inflate the diaphragm to make it swell, so that the door plate raw material is attached to the diaphragm, and the diaphragm also plays a supporting role on the door plate raw material, thereby avoiding the door plate raw material from being deformed due to gravity at the center, and improving the stamping precision to a certain extent. In the process of being deformed by stamping, the upper and lower surfaces of the door plate raw material can be supported to obtain part of stress, so that tensile cracks are avoided at the bending deformation position of the door plate raw material in the stamping process, the quality of the stamping part is improved, and in the process of being deformed, the door plate raw material is always fully attached to the diaphragm. The diaphragm and the upper die can provide sufficient and uniform clamping force for the door plate raw material, the diaphragm is prevented from deviating, and the machining precision is further improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile manufacturing, in particular to an automobile door panel punching device. Background Art

[0002] In automobile production, stamping equipment is a technology that must be used in the production process of automobile door panels. Its main function is to stamp specific steel plates into door panel parts that meet the requirements and ensure their precision and quality.

[0003] Stamping equipment is generally composed of three main parts: hydraulic equipment, control equipment and mold. The hydraulic equipment provides power for the work, and the mold is used to shape the product.

[0004] During the door panel stamping process, the upper and lower molds are closed to press the door panel material into shape. During the deformation of the door panel material, the outer material of the bending point will be over-stretched, which may form cracks here, affecting the surface finish of the product and reducing product quality. Therefore, we proposed an automobile door panel stamping device to solve the problem. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] In response to the problems existing in the prior art, the purpose of the present invention is to provide a car door panel stamping device. This solution installs a diaphragm in the lower die. Before stamping, the inflation device works to inflate the diaphragm to make it expand. The diaphragm is inflated and expands to fill the die groove of the lower die. After the door panel raw material is placed, the door panel raw material can be fitted with the diaphragm. The diaphragm also supports the door panel raw material, preventing the door panel raw material from sagging and deforming at the center under the action of gravity, thereby improving the accuracy of the stamping process to a certain extent. During the process of being stamped and deformed, the upper and lower surfaces of the door panel raw material can be supported and a part of the stress can be obtained, thereby avoiding tensile cracks at the bending and deformation of the door panel raw material during the stamping process, which is useful for improving the quality of the stamped parts. At the same time, during the deformation process of the door panel raw material, it is always fully fitted with the diaphragm. The cooperation between the diaphragm and the upper die can provide sufficient and uniform clamping force to the door panel raw material, thereby avoiding the deviation of the diaphragm, further improving the processing accuracy. After the door panel raw material is shaped, air is inflated into the diaphragm again to expand it and lift the formed door panel out, realizing automatic demoulding, which is more convenient to use.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A car door panel stamping device includes a frame, in which a power device, a control device and a shaping device are installed. The shaping device includes a lower mold and an upper mold. A positioning component is provided between the lower mold and the upper mold to assist in positioning the door panel raw material. A support component is provided inside the lower mold to assist in forming and demolding the door panel raw material. A contraction control component is provided inside the support component to control the supporting force of the support component according to the material of the door panel raw material.

[0010] Furthermore, the positioning assembly includes a sliding groove opened on the top of the lower mold, and the sliding groove is distributed in an array along the edge of the lower mold groove. The interior of the sliding groove is slidably connected to a spring slide rod for positioning the door panel raw material, and the bottom of the upper mold is fixedly connected to a top slide rod corresponding to the spring slide rod.

[0011] Furthermore, the supporting assembly includes a diaphragm fixedly laid on the bottom wall of the lower mold groove, the bottom wall of the lower mold is equipped with an air blowing device, a connecting chamber is opened inside the lower mold, an air supply assembly is arranged between the connecting chamber and the diaphragm, an auxiliary assembly is arranged below, and the air blowing device is connected to the connecting chamber.

[0012] The top of described supporting plate is provided with a groove for accommodating the top plate, and the top surface of top plate is flush with the bottom wall of lower mold groove, and the diaphragm covers above the top plate. The interior of support slide is provided with a connecting hole, and the connecting hole is provided with an external hole connected with the connecting hole, and one end of the external hole extends to the outside of the side wall of the top plate, and the outer side of the support slide is provided with a docking hole that penetrates into the interior of the connecting hole, and the interior of the mounting hole is provided with an internal connecting hole that penetrates into the interior of the connecting chamber, and the internal connecting hole corresponds to the docking hole in the vertical direction and is displaced horizontally up and down, and a fixing component is provided inside the support slide.

[0013] Furthermore, the surfaces where the top plate and the matching groove are fitted are inclined, and the opening of the external channel is fitted with the outer contour of the outer inclined surface of the top plate.

[0014] Furthermore, the fixing assembly includes a sliding mounting groove extending from the bottom wall of the supporting slide rod to the inside of the docking channel, the sliding mounting groove is internally slidably connected to a sliding partition that blocks the docking channel, the outer side of the supporting slide rod is provided with a receiving hole extending into the inside of the sliding mounting groove, the inside of the receiving hole is slidably connected to a card rod, a push spring is installed between the card rod and the receiving hole, the inner wall of the mounting channel is provided with a card hole for receiving the card rod, the part of the card rod entering the card hole is arranged in an arc shape, a limiting groove is provided on the surface of the sliding partition, one end of the card rod is rotatably connected to a limiting rod inserted in the limiting groove, and one end of the card rod is fixedly connected to a limiting block that limits the limiting rod from deflecting upward.

[0015] Furthermore, the contraction control component includes a connecting ring fixedly mounted on the top wall of the connecting chamber, the connecting ring is concentric with the mounting channel, and the annular contour covers the lower opening of the internal channel, the interior of the connecting ring is provided with an annular array of exhaust holes, the exhaust holes are T-shaped, and two of the openings are distributed on the upper and lower surfaces of the connecting ring, and the upper surface opening corresponds to the position of the internal channel, the other opening of the exhaust hole is located on the side of the connecting ring, and a one-way valve for controlling inflation is installed inside, the bottom of the connecting ring is provided with an exhaust ring groove covering the lower opening of the exhaust hole, the inner wall of the connecting chamber is fixedly connected to a pressure component that provides support force for the diaphragm, the upper part of the pressure component is fixedly connected to a sealing ring, the sealing ring is clamped in the exhaust ring groove, and the outside of the pressure component is provided with an adjustment component that controls the size of the support force provided by the pressure component.

[0016] Furthermore, the fixing assembly includes a mounting ring fixedly mounted on the inner wall of the connecting chamber, the mounting ring is concentric with the connecting ring, a pressure gas groove corresponding to the exhaust hole is opened on the top of the mounting ring, a piston rod extending to the top of the mounting ring and clamped with the sealing ring is slidably connected inside the pressure gas groove, and a reset spring is fixedly connected between the piston rod and the pressure gas groove.

[0017] Furthermore, the adjustment component includes an air storage tank provided inside the mounting ring, the air storage tank is connected to the atmosphere, the air storage tank is located below the pressure gas tank, and a through hole is provided between the two, and a rotating groove that cuts off the through hole is provided on the outside of the mounting ring, and a rotating gear disk is connected to the inside of the rotating groove, and a docking hole groove that penetrates up and down begins on the surface of the rotating gear disk, and the position of the docking hole groove corresponds to the through hole, and the docking hole groove is divided into groups, and the length of the docking hole groove in the same group increases in steps at a positive multiple of the diameter of the through hole, and a drive motor is fixedly connected to the connecting chamber, and the output end of the drive motor is fixedly connected to a gear that meshes with the rotating gear disk.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. This solution installs a diaphragm in the lower die. Before stamping, the air blowing device works to inflate the diaphragm to expand it. The diaphragm is inflated and expands to fill the die groove of the lower die. After the door panel raw material is placed, the door panel raw material can fit with the diaphragm. The diaphragm also supports the door panel raw material to prevent the door panel raw material from sagging and deforming at the center under the action of gravity, thereby improving the accuracy of the stamping process to a certain extent. In the process of being stamped and deformed, the upper and lower surfaces of the door panel raw material can be supported and a part of the stress can be obtained, thereby avoiding tensile cracks at the bending and deformation of the door panel raw material during the stamping process, which is useful for improving the quality of the stamped parts. At the same time, during the deformation process of the door panel raw material, it is always fully fitted with the diaphragm. The cooperation between the diaphragm and the upper die can provide sufficient and uniform clamping force to the door panel raw material, thereby avoiding the deviation of the diaphragm and further improving the processing accuracy. After the door panel raw material is shaped, air is inflated into the diaphragm again to expand it and lift the formed door panel to achieve automatic demoulding, which is more convenient to use.

[0021] 2. The door panel raw material is positioned by the positioning component. The restriction of the spring slide bar allows the door panel raw material and the die groove of the lower die to match accurately, making processing more convenient and improving the stamping accuracy of the product. In addition, the outer edge of the door panel raw material is always restricted during the stamping process, which can avoid the deviation of the door panel raw material due to uneven force during processing, further improving the accuracy of the stamping parts.

[0022] 3. By initially closing the docking channel, the support slide can obtain sufficient pushing force to move it to the designated position, avoiding the situation where the docking channel and the internal channel have not yet been fully docked, and a large amount of air flows away from the distribution of the partial docking between the two, resulting in the support slide always being unable to reach the designated position, and the internal channel and the docking channel always being unable to be fully docked, affecting the air flow rate and slowing down the expansion rate of the diaphragm. Such improvements are useful in improving work efficiency.

[0023] 4. By using compressed air to provide support for the diaphragm, the problems of high working pressure, poor anti-fatigue effect and short service life of traditional elastic supports are avoided, making it more durable and with low maintenance costs.

[0024] 5. The supporting force provided by the pressure component can be controlled by adjusting the number of sealed pressure gas grooves. The more sealed pressure gas grooves there are, the greater the supporting force provided by the pressure component. In this way, the supporting force of the diaphragm can be adjusted according to the material and punching strength of the door panel raw material, which is more convenient to use and avoids unnecessary loss of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the framework of the present invention;

[0026] Figure 2 is a schematic diagram of the shaping device of the present invention;

[0027] Figure 3 is a schematic diagram of the diaphragm of the present invention;

[0028] Figure 4 This is a schematic diagram of the interior of the lower mold of the present invention;

[0029] Figure 5 This is a schematic diagram of the bottom of the lower mold of the present invention;

[0030] Figure 6 This is a schematic diagram of the lower side of the air supply assembly of the present invention;

[0031] Figure 7 It is a schematic diagram of the upper part of the air supply assembly of the present invention;

[0032] Figure 8 This is a schematic diagram of the interior of the air supply assembly of the present invention;

[0033] Figure 9 is a schematic diagram of a fixing assembly of the present invention;

[0034] Figure 10 For the present invention Figure 9 Enlarged view of point A in the middle;

[0035] Figure 11 This is a disassembled diagram of the contraction control assembly of the present invention;

[0036] Figure 12 Schematic diagram of the interior of the contraction control component of the present invention.

[0037] Description of the numbers in the figure:

[0038] 1. Frame; 2. Power equipment; 3. Control equipment; 4. Shaping equipment; 41. Lower mold; 42. Upper mold; 43. Positioning assembly; 431. Sliding groove; 432. Spring slide; 433. Push slide; 5. Support assembly; 51. Diaphragm; 52. Air blowing device; 53. Air supply assembly; 531. Mounting channel; 532. Support slide; 533. Top plate; 534. Connecting channel; 535. External channel; 536. Docking channel; 537. Internal channel; 54. Connecting chamber; 55. Fixing assembly; 551. Sliding mounting groove; 552. Sliding partition; 553. Storage hole; 55 4. Clamping rod; 555. Push spring; 556. Clamping hole; 557. Limiting groove; 558. Limiting rod; 56. Auxiliary component; 561. Mounting port; 562. Sealing plate; 6. Contraction control component; 61. Connecting ring; 62. Exhaust hole; 63. Exhaust ring groove; 64. Sealing ring; 65. Pressure component; 651. Mounting ring; 652. Pressure air groove; 653. Piston rod; 654. Return spring; 66. Adjusting component; 661. Rotating groove; 662. Rotating gear disc; 663. Through hole; 664. Docking hole groove; 665. Air storage chamber; 666. Driving motor; 667. Gear. DETAILED DESCRIPTION

[0039] This embodiment will be combined with the disclosed drawings to clearly and completely describe the technical solution, so that the purpose, technical solution and beneficial effects of the embodiment of the present disclosure are more clear. Obviously, the described embodiment is a part of the embodiment of the present disclosure, not all the embodiments. Based on the described embodiment of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this disclosure.

[0040] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the conventional meanings understood by those skilled in the art to which this disclosure pertains. The words “first”, “second” and similar terms used in this disclosure do not indicate any order, quantity or importance, but are merely used to distinguish different components. Words such as “include” and similar terms mean that the elements or objects preceding the word encompass the elements or objects listed following the word and their equivalents, without excluding other elements or objects. “Up”, “down”, “inside”, “outside” and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0041] Example:

[0042] See also Figure 1-3, a car door panel stamping device includes a frame 1, in which a power device 2, a control device 3 and a shaping device 4 are installed, the shaping device 4 includes a lower die 41 and an upper die 42, and a positioning component 43 is provided between the lower die 41 and the upper die 42 to assist in positioning the door panel raw material; the positioning component 43 includes a sliding groove 431 opened on the top of the lower die 41, the number of the sliding grooves 431 is not less than four, and all are distributed in an array along the edge of the die groove of the lower die 41, the interior of the sliding groove 431 is slidably connected to a spring slide bar 432 for positioning the door panel raw material, the spring slide bar 432 can be retracted into the sliding groove 431, and the bottom of the upper die 42 is fixedly connected to a top slide bar 433 corresponding to the spring slide bar 432;

[0043] When installing the door panel raw material, place the door panel raw material between the spring slide bar 432 above the lower mold 41. The spring slide bar 432 is restricted to make the door panel raw material and the mold groove of the lower mold 41 precisely matched, which makes processing more convenient and improves the stamping accuracy of the product. During the stamping process, the upper mold 42 is close to the lower mold 41, and the push slide bar 433 touches the top of the spring slide bar 432 to compress the spring slide bar 432 into the sliding groove 431. After the lower mold 41 and the upper mold 42 are closed, the push slide bar 433 also enters the sliding groove 431. In this way, the outer edge of the door panel raw material is always restricted during the stamping process, which can avoid the door panel raw material from being offset due to uneven force during processing, and further improve the accuracy of the stamping parts.

[0044] See also Figure 4-10 A support component 5 assisting in the molding and demolding of the door panel raw materials is provided inside the lower mold 41. The support component 5 includes a diaphragm 51 fixedly laid on the bottom wall of the mold groove of the lower mold 41. After the diaphragm 51 is inflated, the upper surface is stretched and tightened to form a plane. The bottom wall of the lower mold 41 is equipped with an air blowing device 52 for supplying air to the connecting chamber 54. When the pressure in the connecting chamber 54 increases, it is also discharged through the upper mold 42. A connecting chamber 54 is opened inside the lower mold 41. An air supply component 53 is provided between the connecting chamber 54 and the diaphragm 51. The air blowing device 52 is connected to the connecting chamber 54.

[0045] The air supply component 53 includes a mounting channel 531 provided between the connecting chamber 54 and the die groove of the lower mold 41, the interior of the mounting channel 531 is slidably connected to a support slide 532, the outer side of the support slide 532 is provided with a limit buckle, a damping member is provided between the support slide 532 and the mounting channel 531, the top of the support slide 532 is fixedly connected to a top plate 533, and the upper opening of the mounting channel 531 is provided with a matching groove for accommodating the top plate 533, the surface of the top plate 533 and the matching groove are in an inclined shape, and the opening of the external channel 535 is in a fit with the outer contour of the outer inclined surface of the top plate 533, which makes it convenient for air to flush out the diaphragm 51 and also facilitates the complete discharge of the air in the diaphragm 51. The bottom wall of the mold cavity of the mold 41 is flush, and the diaphragm 51 covers the top plate 533. A connecting channel 534 is provided inside the support slide 532, and an external channel 535 communicating with the connecting channel 534 is provided inside the connecting channel 534. One end of the external channel 535 extends to the side wall of the top plate 533. A docking channel 536 is provided on the outside of the support slide 532 and penetrates into the interior of the connecting channel 534. An internal channel 537 is provided inside the mounting channel 531 and penetrates into the interior of the connecting chamber 54. The internal channel 537 corresponds to the docking channel 536 in the vertical direction (seen from above) and is displaced up and down in the horizontal direction (seen from the side). A fixing component 55 is provided inside the support slide 532.

[0046] Before stamping, the air blowing device 52 works to inject air into the connecting chamber 54. The air in the connecting chamber 54 pushes the supporting slide bar 532 to lift the top plate 533 and move it upward, so that the external channel 535 is exposed from the supporting slide bar 532 and the mating groove fitting surface. At the same time, the movement of the supporting slide bar 532 also makes the docking channel 536 and the internal channel 537 dock. The air in the connecting chamber 54 enters the connecting channel 534 along the internal channel 537 and the docking channel 536, and then is ejected from the external channel 535 and enters the diaphragm 51. The diaphragm 51 is inflated and gradually fills the die groove of the lower die 41. After the door panel raw material is placed, the door panel raw material can be fitted with the diaphragm 51. The diaphragm 51 also supports the door panel raw material, preventing the door panel raw material from sagging and deforming at the center under the action of gravity, thereby improving the accuracy of the stamping process to a certain extent.

[0047] During the stamping process, the upper die 42 presses down and contacts the door panel raw material. As the upper die 42 continues to press down, the diaphragm 51 supported under the door panel raw material begins to shrink, and the internal air returns to the connection chamber 54 along the external channel 535, the connecting channel 534, the docking channel 536 and the internal channel 537, and is discharged by the upper die 42. When the diaphragm 51 continues to shrink and contacts the top surface of the top plate 533, the top plate 533 is pushed down little by little, and the external channel 535 is also closed little by little. The lower die 41 and the upper die 42 are closed, and the stamping is completed. The door panel raw material and the lower die 41 are sealed. 1. The die groove is completely fitted, the diaphragm 51 is also completely fitted with the die groove of the lower die 41, and the top plate 533 is completely pushed back to the matching groove. In this way, the upper and lower surfaces of the door panel raw material can be supported during the stamping deformation process, and a part of the stress is obtained, thereby avoiding tensile cracks at the bending and deformation of the door panel raw material during the stamping process, which is beneficial to improve the quality of the stamped parts. At the same time, during the deformation process of the door panel raw material, it is always fully fitted with the diaphragm 51. The cooperation between the diaphragm 51 and the upper die 42 can provide sufficient and uniform clamping force to the door panel raw material, thereby avoiding the deviation of the diaphragm 51 and further improving the processing accuracy.

[0048] After the door panel raw material is shaped, demoulding begins. The air blowing device 52 works to inject air into the connecting chamber 54. The air inside the connecting chamber 54 enters the diaphragm 51 along the internal connection channel 537, the docking channel 536, the connecting channel 534 and the connecting channel 534. The diaphragm 51 expands to lift the formed door panel, realizing automatic demoulding and making it more convenient to use.

[0049] The fixing assembly 55 includes a sliding mounting groove 551 extending from the bottom wall of the supporting slide bar 532 to the interior of the docking channel 536. The interior of the sliding mounting groove 551 is slidably connected to a sliding partition 552 that blocks the docking channel 536. The bottom of the sliding partition 552 extends from the sliding mounting groove 551, and the extended portion is installed with a counterweight to facilitate the sliding partition 552 to slide down. The outer side of the supporting slide bar 532 is provided with a storage hole 553 extending from the interior of the sliding mounting groove 551. The interior of the storage hole 553 is slidably connected to a clamping rod 554. The clamping rod 554 and the storage A push spring 555 is installed between the holes 553. A locking hole 556 for accommodating the locking rod 554 is formed on the inner wall of the mounting hole 531. The portion of the locking rod 554 that enters the locking hole 556 is arranged in an arc shape. The height difference between the locking hole 556 and the locking rod 554 is the same as the height difference between the internal hole 537 and the docking hole 536. A limiting groove 557 is formed on the surface of the sliding partition 552. One end of the locking rod 554 is rotatably connected to a limiting rod 558 inserted into the limiting groove 557. One end of the locking rod 554 is fixedly connected to a limiting block that limits the limiting rod 558 from deflecting upward.

[0050] When the connecting chamber 54 is inflated, the supporting slide bar 532 is first pushed upward by the air, and the docking hole 536 and the internal hole 537 begin to dock gradually. During this process, the docking hole 536 is always blocked by the sliding partition 552, and air cannot circulate. When the docking hole 536 and the internal hole 537 are fully docked, the locking rod 554 is also docked with the locking hole 556. The locking rod 554 enters the locking hole 556 under the push of the pushing spring 555, and the limiting rod 558 is pulled out of the limiting groove 557. The sliding partition 552 without the restriction of the limiting rod 558 slides down under the action of gravity, opening the docking hole 536, allowing air to circulate normally into the diaphragm 51. In this way, the initial closing of the docking hole 536 can allow the supporting slide bar 532 to obtain sufficient pushing force to move it to the specified position, thereby avoiding the docking hole 536 and the internal hole 537 not being fully docked, and a large amount of air entering from the two. The distributed flow of the local docking causes the support slide bar 532 to never reach the specified position, and the internal channel 537 and the docking channel 536 can never be fully docked, which affects the flow rate of air and slows down the expansion rate of the diaphragm 51. Such improvements are useful in improving work efficiency. When the stamping is reset, the support slide bar 532 moves downward, the internal channel 537 begins to be misaligned with the docking channel 536, and the sliding partition 552 also starts to move toward the inside of the sliding mounting groove 551 because it touches the bottom wall of the mounting channel 531. The card rod 554 disengages from the card hole 556 and is compressed in the storage hole 553. The limit rod 558 also deflects downward due to being squeezed. When the support slide bar 532 is fully reset, the internal channel 537 and the docking channel 536 are completely misaligned, the sliding partition 552 enters the docking channel 536 to block it, and the limit rod 558 is stuck in the limit groove 557, and the limit rod 558 is fixed.

[0051] See also Figure 6-12 The interior of the support assembly 5 is provided with a contraction control assembly 6 for controlling the supporting force of the support assembly 5 according to the material of the door panel raw material. An auxiliary assembly 56 is provided below the connecting chamber 54. The auxiliary assembly 56 includes a mounting port 561 starting from the bottom of the lower mold 41 to the connecting chamber 54. A sealing plate 562 is fixed to the inside of the mounting port 561 by screws. The surface of the sealing plate 562 is provided with an interface corresponding to the air blowing device 52. The air blowing device 52 is installed below the sealing plate 562. In this way, the contraction control assembly 6 in the connecting chamber 54 can be inspected and replaced by opening the sealing plate 562, which is more convenient to use.

[0052] The contraction control assembly 6 includes a connecting ring 61 fixedly mounted on the inner top wall of the connecting chamber 54. The connecting ring 61 is concentric with the mounting channel 531, and the annular contour covers the lower opening of the internal channel 537. The interior of the connecting ring 61 is provided with an annular array of exhaust holes 62. The exhaust holes 62 are T-shaped, and two of the openings are distributed on the upper and lower surfaces of the connecting ring 61. The upper surface opening corresponds to the position of the internal channel 537. The other opening of the exhaust hole 62 is located on the side of the connecting ring 61, and the internal A one-way valve for controlling inflation is installed. The one-way valve allows air to flow into the exhaust hole 62 in only one direction. An exhaust ring groove 63 covering the opening below the exhaust hole 62 is provided at the bottom of the connecting ring 61. A pressure assembly 65 providing support for the diaphragm 51 is fixedly connected to the inner wall of the connecting chamber 54. A sealing ring 64 is fixedly connected above the pressure assembly 65. The sealing ring 64 is snapped into the exhaust ring groove 63. An adjustment assembly 66 for controlling the amount of support provided by the pressure assembly 65 is provided on the outer side of the pressure assembly 65.

[0053] The fixing assembly 55 includes a mounting ring 651 fixedly mounted on the inner wall of the connecting chamber 54. The mounting ring 651 is concentric with the connecting ring 61. A pressure gas groove 652 corresponding to the exhaust hole 62 is opened on the top of the mounting ring 651. A piston rod 653 extending to the top of the mounting ring 651 and engaged with the sealing ring 64 is slidably connected inside the pressure gas groove 652. A return spring 654 is fixedly connected between the piston rod 653 and the pressure gas groove 652.

[0054] When the upper mold 42 is inflated, air enters the exhaust hole 62 from the opening on the side of the exhaust hole 62, and then enters the internal channel 537 from the exhaust hole 62. When the diaphragm 51 is squeezed and exhausted, air enters the exhaust hole 62 from the internal channel 537. Since the opening below the exhaust hole 62 is blocked by the sealing ring 64, the air pressure in the exhaust hole 62 continues to increase, which will push the sealing ring 64 downward. The downward movement of the sealing ring 64 requires the piston rod 653 to compress the air in the pressure air groove 652. The air in the exhaust hole 62 flows out from the gap between the exhaust ring groove 63 and the sealing ring 64. The force of the air compression in the pressure air groove 652 is the supporting force obtained by the diaphragm 51.

[0055] The adjustment assembly 66 includes an air storage chamber 665 provided inside the mounting ring 651. The air storage chamber 665 is connected to the atmosphere and is located below the pressure gas tank 652. A through hole 663 is provided between the two. A rotating groove 661 is provided on the outside of the mounting ring 651 to cut off the through hole 663. A rotating gear disc 662 is rotatably connected to the rotating groove 661. A docking hole groove 664 is provided on the surface of the rotating gear disc 662, which penetrates from top to bottom. The position of the docking hole groove 664 corresponds to the through hole 663. The docking hole groove 664 is divided into groups, and the length of the docking hole groove 664 in the same group increases in steps at a positive multiple of the diameter of the through hole 663. A driving motor 666 is fixedly connected to the connecting chamber 54. The output end of the driving motor 666 is fixedly connected to a gear 667 that meshes with the rotating gear disc 662.

[0056] When the pressure component 65 provides supporting force for the diaphragm 51, the local docking hole groove 664 connects the pressure gas groove 652 and the air storage tank 665. When this part of the piston rod 653 is squeezed, the air in the pressure gas groove 652 will enter the docking hole groove 664 through the through hole 663 and cannot provide supporting force. Only when the through hole 663 and the docking hole groove 664 are misaligned can the pressure gas groove 652 provide supporting force. When the supporting force needs to be adjusted, the driving motor 666 drives the rotating toothed disc 662 to rotate through the gear 667, changes the docking state of the docking hole groove 664 and the through hole 663, and can control the number of piston rods 653 that can provide supporting force.

[0057] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A stamping device for automobile door panels, comprising a frame (1), wherein a power device (2), a control device (3) and a shaping device (4) are installed in the frame (1), wherein the shaping device (4) comprises a lower die (41) and an upper die (42), and is characterized in that: A positioning assembly (43) for assisting in positioning the door panel raw material is provided between the lower mold (41) and the upper mold (42); a supporting assembly (5) for assisting in molding and demoulding the door panel raw material is provided inside the lower mold (41); a contraction control assembly (6) for controlling the supporting force of the supporting assembly (5) according to the material of the door panel raw material is provided inside the supporting assembly (5); The positioning assembly (43) includes a sliding groove (431) provided on the top of the lower mold (41), the sliding groove (431) being distributed in an array along the edge of the mold groove of the lower mold (41), the interior of the sliding groove (431) being slidably connected to a spring slide bar (432) for positioning the door panel raw material, and the bottom of the upper mold (42) being fixedly connected to a top slide bar (433) corresponding to the spring slide bar (432); The support assembly (5) includes a diaphragm (51) fixedly laid on the bottom wall of the die groove of the lower die (41); the bottom wall of the lower die (41) is equipped with an air blowing device (52); a connecting chamber (54) is opened inside the lower die (41); an air supply assembly (53) is provided between the connecting chamber (54) and the diaphragm (51); an auxiliary assembly (56) is provided below the connecting chamber (54); and the air blowing device (52) is connected to the connecting chamber (54); The air supply assembly (53) includes a mounting hole (531) provided between the connecting chamber (54) and the die groove of the lower mold (41), the interior of the mounting hole (531) is slidably connected to a support slide (532), the outer side of the support slide (532) is provided with a limit buckle, a damping member is provided between the support slide (532) and the mounting hole (531), the top of the support slide (532) is fixedly connected to a top plate (533), the upper opening of the mounting hole (531) is provided with a matching groove for accommodating the top plate (533), the top surface of the top plate (533) is flush with the bottom wall of the die groove of the lower mold (41), the diaphragm (51) covers the top of the top plate (533), the support slide A connecting channel (534) is provided inside the (532), an external connecting channel (535) communicating with the connecting channel (534) is provided inside the connecting channel (534), one end of the external connecting channel (535) extends to the side wall of the top plate (533), a docking channel (536) penetrating into the interior of the connecting channel (534) is provided on the outside of the supporting slide bar (532), an internal connecting channel (537) penetrating into the interior of the connecting chamber (54) is provided inside the mounting channel (531), the internal connecting channel (537) corresponds to the docking channel (536) in the vertical direction and is offset up and down in the horizontal direction, and a fixing component (55) is provided inside the supporting slide bar (532).

2. The automobile door panel punching device according to claim 1, characterized in that: The surfaces where the top plate (533) and the matching groove fit together are inclined, and the opening of the external channel (535) fits together with the outer contour of the outer inclined surface of the top plate (533).

3. The automobile door panel punching device according to claim 1, characterized in that: The fixing assembly (55) includes a sliding installation groove (551) extending from the bottom wall of the supporting slide bar (532) to the interior of the docking channel (536), the interior of the sliding installation groove (551) is slidably connected to a sliding partition (552) for blocking the docking channel (536), the outer side of the supporting slide bar (532) is provided with a receiving hole (553) extending from the interior of the sliding installation groove (551), the interior of the receiving hole (553) is slidably connected to a clamping rod (554), the clamping rod (554) and the receiving hole (553) are slidably connected. A push spring (555) is installed between the two parts, and a clamping hole (556) for accommodating the clamping rod (554) is provided on the inner wall of the installation channel (531). The portion of the clamping rod (554) entering the clamping hole (556) is arranged in an arc shape. A limiting groove (557) is provided on the surface of the sliding partition (552). One end of the clamping rod (554) is rotatably connected to a limiting rod (558) inserted into the limiting groove (557). One end of the clamping rod (554) is fixedly connected to a limiting block for limiting the upward deflection of the limiting rod (558).

4. The automobile door panel punching device according to claim 1, characterized in that: The contraction control assembly (6) includes a connecting ring (61) fixedly mounted on the inner top wall of the connecting chamber (54), the connecting ring (61) is concentric with the mounting channel (531), and the annular contour covers the lower opening of the internal channel (537), and the interior of the connecting ring (61) is provided with an annular array of exhaust holes (62), the exhaust holes (62) are T-shaped, and two of the openings are distributed on the upper and lower surfaces of the connecting ring (61), and the upper surface opening corresponds to the position of the internal channel (537), and the other opening of the exhaust hole (62) is located on the connecting ring. (61) side, and a one-way valve for controlling inflation is installed inside, the bottom of the connecting ring (61) is provided with an exhaust ring groove (63) covering the opening below the exhaust hole (62), the inner wall of the connecting chamber (54) is fixedly connected with a pressure component (65) for providing support force for the diaphragm (51), the upper part of the pressure component (65) is fixedly connected with a sealing ring (64), the sealing ring (64) is clamped in the exhaust ring groove (63), and the outer side of the pressure component (65) is provided with an adjusting component (66) for controlling the size of the support force provided by the pressure component (65).

5. The automobile door panel punching device according to claim 4, characterized in that: The fixing assembly (55) includes a mounting ring (651) fixedly mounted on the inner wall of the connecting chamber (54), the mounting ring (651) is concentric with the connecting ring (61), a pressure gas groove (652) corresponding to the exhaust hole (62) is provided on the top of the mounting ring (651), a piston rod (653) extending to the top of the mounting ring (651) and engaging with the sealing ring (64) is slidably connected inside the pressure gas groove (652), and a return spring (654) is fixedly connected between the piston rod (653) and the pressure gas groove (652).

6. The automobile door panel punching device according to claim 4, characterized in that: The regulating assembly (66) includes an air storage chamber (665) provided inside the mounting ring (651), the air storage chamber (665) being connected to the atmosphere, the air storage chamber (665) being located below the pressure gas tank (652), and a through hole (663) being provided between the two, a rotating groove (661) being provided on the outside of the mounting ring (651) for intercepting the through hole (663), a rotating gear disc (662) being rotatably connected to the inside of the rotating groove (661), and the rotating gear disc (662) being rotated. A docking hole groove (664) is formed on the surface and extends vertically therethrough. The position of the docking hole groove (664) corresponds to the through hole (663). The docking hole groove (664) is divided into groups, and the length of the docking hole groove (664) in the same group increases in steps at a positive multiple of the diameter of the through hole (663). A driving motor (666) is fixedly connected to the connecting chamber (54), and a gear (667) meshing with the rotating gear disc (662) is fixedly connected to the output end of the driving motor (666).

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