A bending device for door panel processing

Abstract

The present invention discloses a bending device for door panel processing, belonging to the field of door panel processing equipment, including a processing table. A rotatable bending member is arranged on the processing table, and the rotation of the bending member is driven by a motor installed on the processing table. An installation frame is connected to the processing table, and a cylinder is installed on the installation frame. The bottom end of the extension rod of the cylinder is fixed with a pressing frame. It further includes: a pressing mechanism arranged on the installation frame, and the pressing mechanism is used to adjust the contact area between the pressing plate and the door panel according to the thickness of the door panel. Through the setting of the pressing mechanism of the present invention, the contact area between the pressing plate and the door panel can be flexibly adjusted according to the actual thickness of the door panel. When the door panel is relatively thin, components such as the piston disk one, the sliding rod one, and the lifting strip in the liquid storage cylinder cooperate with each other. The liquid transmits pressure through the liquid inlet pipe to the fixed cylinder, pushing the piston disk two and the sliding rod two to move, and then driving the extrusion strip to extrude the arc-shaped block one, so that the pressing plate one is pressed down with the cooperation of the spring three for pressing.

Description

Technical Field

[0001] The present invention relates to the technical field of door panel processing equipment, and particularly to a bending device for door panel processing. Background Art

[0002] In the field of door panel processing, the bending process is a key link in shaping the specific shape of door panels to meet the diverse product design requirements. Most traditional door panel bending devices rely on pressing plates to fix the door panels during the bending process.

[0003] With the development of the door panel manufacturing industry, the market's demand for door panel specifications is becoming increasingly diverse, and the thickness differences of door panels are becoming more significant. Existing such bending devices gradually expose obvious defects in practical applications. Most of their pressing devices use pressing plates with fixed structures. When facing door panels of different thicknesses, when using a conventional pressing plate to press a thinner door panel, the contact area is too large, which easily leaves too many indentations on the surface of the door panel, affecting the appearance quality of the door panel. Subsequently, additional processes such as grinding are required, increasing production costs and working hours. For thicker door panels, if the pressing plate cannot fit fully, the contact area is too small, and it cannot provide sufficient pressing force, resulting in the door panel being prone to loosening and displacement during the bending process, greatly reducing the bending accuracy and increasing the rejection rate. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the contact area between the pressing plate and the door panel cannot be flexibly adjusted according to the thickness of the door panel. When using a conventional pressing plate to press a thinner door panel, the contact area is too large, which easily leaves too many indentations on the surface of the door panel, affecting the appearance quality of the door panel. Subsequently, additional processes such as grinding are required, increasing production costs and working hours. For thicker door panels, if the pressing plate cannot fit fully, the contact area is too small, and it cannot provide sufficient pressing force, resulting in the door panel being prone to loosening and displacement during the bending process, greatly reducing the bending accuracy and increasing the rejection rate. A bending device for door panel processing is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A bending device for door panel processing, including a processing table, a rotatable bending member is arranged on the processing table, the rotation of the bending member is driven by a motor installed on the processing table, an installation frame is connected to the processing table, a cylinder is installed on the installation frame, and a pressing frame is fixed to the bottom end of the extension rod of the cylinder. It further includes:

[0007] A pressing mechanism arranged on the installation frame, the pressing mechanism is used to adjust the contact area between the pressing plate and the door panel according to the thickness of the door panel;

[0008] An auxiliary mechanism installed on the pressing mechanism, the auxiliary mechanism is used to make the pressing mechanism more stable.

[0009] Preferably, the pressing mechanism includes an L-shaped block fixed on the mounting frame. A liquid storage cylinder is fixed to the bottom of the L-shaped block. A first piston disk slides in the liquid storage cylinder. A first slide rod is fixed to the bottom of the first piston disk. The first slide rod is slidably connected to the liquid storage cylinder. A lifting strip is fixed to the bottom end of the first slide rod. One side of the lifting strip close to the pressing frame is inclined. A first spring is sleeved on the outer surface of the first slide rod. Two ends of the first spring are respectively connected to the liquid storage cylinder and the lifting strip. A liquid inlet pipe is communicated with the outer surface of the liquid storage cylinder. An adjusting part is arranged on the pressing frame.

[0010] Preferably, the adjusting part includes a fixing frame fixed on the pressing frame. A fixing cylinder is fixed to the side surface of the fixing frame. One end of the liquid inlet pipe far from the liquid storage cylinder is communicated with the fixing cylinder. A second piston disk slides in the fixing cylinder. A second slide rod is fixed to the second piston disk. The second slide rod is slidably connected to the fixing cylinder. A second spring is sleeved on the outer surface of the second slide rod. Two ends of the second spring are respectively fixed to the second piston disk and the fixing cylinder. A moving frame is fixed to one end of the second slide rod far from the second piston disk. An extrusion strip is fixed to one side surface of the moving frame far from the second slide rod.

[0011] Preferably, a first pressing part is arranged on the pressing frame. The first pressing part includes a first cross plate fixed on the pressing frame. A first extrusion rod slides on the first cross plate. A first pressing plate is fixed to the bottom end of the first extrusion rod. A first arc-shaped block is fixed to the top end of the first extrusion rod. The first arc-shaped block and the extrusion strip are on the same horizontal line. A third spring is sleeved on the outer surface of the first extrusion rod. Two ends of the third spring are respectively fixed to the first cross plate and the first arc-shaped block.

[0012] Preferably, a second pressing part is arranged on the pressing frame. The second pressing part includes a second cross plate fixed on the pressing frame. The second cross plate is located on the side of the first cross plate far from the extrusion strip. A second extrusion rod slides on the second cross plate. A second pressing plate is fixed to the bottom end of the second extrusion rod. A second arc-shaped block is fixed to the top end of the second extrusion rod. A fourth spring is sleeved on the outer surface of the second extrusion rod. Two ends of the fourth spring are respectively fixed to the second cross plate and the second arc-shaped block. The volume of the second pressing plate is larger than that of the first pressing plate.

[0013] Preferably, a third pressing part is arranged on the pressing frame. The third pressing part includes a third cross plate fixed on the pressing frame. The third cross plate is located on the side of the second arc-shaped block far from the first arc-shaped block. A third extrusion rod slides on the third cross plate. A third pressing plate is fixed to the bottom end of the third extrusion rod. A third arc-shaped block is fixed to the top end of the third extrusion rod. A fifth spring is sleeved on the outer surface of the third extrusion rod. Two ends of the fifth spring are respectively fixed to the third cross plate and the third arc-shaped block. The volume of the third pressing plate is larger than that of the second pressing plate.

[0014] Preferably, the auxiliary mechanism includes extrusion blocks fixed on the second arc-shaped block and the third arc-shaped block. Sliders are fixed on both the first arc-shaped block and the second arc-shaped block. Vertical bars are fixed on the tops of both the first horizontal plate and the second horizontal plate. The sliders slide on the outer surfaces of the vertical bars, and rectangular shells are fixed on the outer surfaces of the sliders.

[0015] Preferably, the auxiliary mechanism further includes an airbag fixed inside the rectangular shell. A moving block is fixed on the airbag. The moving block slides inside the rectangular shell. A locking rod is fixed on a side surface of the moving block away from the airbag. The locking rod is slidably connected to the slider and the rectangular shell. A sixth spring is sleeved on the outer surface of the locking rod, and both ends of the sixth spring are fixedly connected to the rectangular shell and the moving block respectively.

[0016] Preferably, the auxiliary mechanism further includes air cushions fixed on the third horizontal plate and the second horizontal plate. Air inlet pipes are communicated with the outer surfaces of the air cushions. One end of each air inlet pipe away from the air cushion is communicated with the airbag. Locking holes are formed in the vertical bars, and the locking rod is slidably connected to the locking holes.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. Through the arrangement of the pressing mechanism, the contact area between the pressing plate and the door panel can be flexibly adjusted according to the actual thickness of the door panel. When the door panel is relatively thin, components such as the first piston disk, the first sliding rod, and the lifting strip in the liquid storage cylinder cooperate to transfer the pressure of the liquid through the liquid inlet pipe to the fixed cylinder, pushing the second piston disk and the second sliding rod to move, and then driving the extrusion strip to extrude the first arc-shaped block, so that the first pressing plate is pressed down with the cooperation of the third spring to avoid indentation caused by large-area contact and ensure that the appearance of the door panel is perfect. When the door panel is relatively thick, the entire pressing mechanism can be reversely linked to fully extend each pressing plate, increase the contact area, provide a strong enough pressing force, ensure that the door panel remains motionless during the bending process, greatly improve the bending accuracy, and effectively reduce the rejection rate.

[0019] 2. Through the cooperation of the extrusion blocks, sliders and vertical bars in the auxiliary mechanism, lateral support is provided for the pressing mechanism. When bending large door panels or door panels with hard materials and large reaction forces, the sliders slide along the vertical bars to ensure that each pressing plate does not shift horizontally. The extrusion blocks further strengthen the structural rigidity, make the pressing force evenly distributed, effectively prevent bending deviation of the door panel due to uneven force, and ensure the consistency of processing accuracy. When the thickness of the door panel changes and the pressing mechanism is adjusted, the gas pressure in the airbag changes, pushing the moving block to move, driving the locking rod to slide in the slider and the rectangular shell. When the locking rod is inserted into the locking hole of the vertical bar, precise locking is achieved, which not only ensures that the pressing mechanism is stable during operation but also can be quickly unlocked and adjusted when the door panel thickness is switched, with convenient and efficient operation, providing a strong guarantee for continuous door panel processing. Description of the Drawings

[0020] Figure 1 Schematic diagram of the overall structure of a bending device for door panel processing proposed by the present invention;

[0021] Figure 2 Schematic diagram of the internal structure of the liquid storage cylinder of a bending device for door panel processing proposed by the present invention;

[0022] Figure 3 A bending device for door panel processing proposed by the present invention Figure 2 Enlarged schematic diagram of the structure at A;

[0023] Figure 4 Schematic diagram of the internal structure of the pressing frame of a bending device for door panel processing proposed by the present invention;

[0024] Figure 5 A bending device for door panel processing proposed by the present invention Figure 4 Enlarged schematic diagram of the structure at B;

[0025] Figure 6 Top view schematic diagram of the mounting frame structure of a bending device for door panel processing proposed by the present invention;

[0026] Figure 7 A bending device for door panel processing proposed by the present invention Figure 6 Enlarged schematic diagram of the structure at C.

[0027] In the figure: 1, processing table; 2, bending part; 3, mounting frame; 4, cylinder; 5, pressing frame; 60, L-shaped block; 61, liquid storage cylinder; 62, piston disk I; 63, sliding rod I; 64, lifting strip; 65, spring I; 66, liquid inlet pipe; 671, fixing frame; 672, fixing cylinder; 673, piston disk II; 674, sliding rod II; 675, spring II; 676, moving frame; 677, extrusion strip; 681, cross plate I; 682, extrusion rod I; 683, pressing plate I; 684, arc block I; 685, spring III; 691, cross plate II; 692, extrusion rod II; 693, pressing plate II; 694, arc block II; 695, spring IV; 601, cross plate III; 602, extrusion rod III; 603, pressing plate III; 604, arc block III; 605, spring V; 70, extrusion block; 71, slider; 72, vertical strip; 73, rectangular shell; 74, airbag; 75, moving block; 76, locking rod; 77, spring VI; 78, locking hole; 79, air cushion; 710, air inlet pipe. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1. Refer to Figures 1-7 , a bending device for door panel processing, including a processing table 1, a rotatable bending member 2 is arranged on the processing table 1, the rotation of the bending member 2 is driven by a motor installed on the processing table 1, an installation frame 3 is connected to the processing table 1, a cylinder 4 is installed on the installation frame 3, and a pressing frame 5 is fixed to the bottom end of the extension rod of the cylinder 4. It further includes:

[0030] A pressing mechanism arranged on the installation frame 3, and the pressing mechanism is used to adjust the contact area between the pressing plate and the door panel according to the thickness of the door panel;

[0031] An auxiliary mechanism installed on the pressing mechanism, and the auxiliary mechanism is used to make the pressing mechanism more stable.

[0032] Further, the pressing mechanism includes an L-shaped block 60 fixed to the installation frame 3, a liquid storage cylinder 61 is fixed to the bottom of the L-shaped block 60, a piston disk one 62 slides in the liquid storage cylinder 61, a slide rod one 63 is fixed to the bottom of the piston disk one 62, the slide rod one 63 is slidably connected to the liquid storage cylinder 61, a lifting strip 64 is fixed to the bottom end of the slide rod one 63, the side of the lifting strip 64 close to the pressing frame 5 is inclined, a spring one 65 is sleeved on the outer surface of the slide rod one 63, and both ends of the spring one 65 are connected to the liquid storage cylinder 61 and the lifting strip 64 respectively. A liquid inlet pipe 66 is communicated with the outer surface of the liquid storage cylinder 61, and an adjusting part is arranged on the pressing frame 5.

[0033] Further, the adjusting part includes a fixing frame 671 fixed to the pressing frame 5, a fixing cylinder 672 is fixed to the side of the fixing frame 671, the end of the liquid inlet pipe 66 away from the liquid storage cylinder 61 is communicated with the fixing cylinder 672, a piston disk two 673 slides in the fixing cylinder 672, a slide rod two 674 is fixed to the piston disk two 673, the slide rod two 674 is slidably connected to the fixing cylinder 672, a spring two 675 is sleeved on the outer surface of the slide rod two 674, and both ends of the spring two 675 are fixedly connected to the piston disk two 673 and the fixing cylinder 672 respectively. A moving frame 676 is fixed to the end of the slide rod two 674 away from the piston disk two 673, and an extrusion strip 677 is fixed to the side surface of the moving frame 676 away from the slide rod two 674.

[0034] Further, a first pressing portion is provided on the pressing frame 5. The first pressing portion includes a first horizontal plate 681 fixed to the pressing frame 5. A first pressing rod 682 slides on the first horizontal plate 681. A first pressing plate 683 is fixed to the bottom end of the first pressing rod 682. A first arc-shaped block 684 is fixed to the top end of the first pressing rod 682. The first arc-shaped block 684 and the pressing strip 677 are on the same horizontal line. A third spring 685 is sleeved on the outer surface of the first pressing rod 682. Two ends of the third spring 685 are respectively fixedly connected to the first horizontal plate 681 and the first arc-shaped block 684.

[0035] During use, place the door panel on the processing table 1, drive the pressing frame 5 to move downward through the cylinder 4 to fix the door panel, and drive the bending member 2 to rotate through the motor installed on the processing table 1 to perform bending operations on the door panel. This is the prior art, so no further elaboration will be made here.

[0036] Considering that in the prior art, most pressing devices use pressing plates with fixed structures. When facing door panels of different thicknesses, when using a conventional pressing plate to press a thinner door panel, such as when facing some decorative door panels with a thickness of only 3-5 mm, the contact area is too large, and it is easy to leave too many indentations on the surface of the door panel, affecting the appearance quality of the door panel. Subsequent additional processes such as grinding are required, increasing production costs and working hours. For thicker door panels, such as thick fireproof door panels with a thickness of 40-50 mm, if the pressing plate cannot fully fit and the contact area is too small, it cannot provide sufficient pressing force, resulting in the door panel being prone to loosening and displacement during the bending process, greatly reducing the bending accuracy and increasing the rejection rate. The following improvements are made:

[0037] In the initial state, drive the pressing frame 5 to move downward through the cylinder 4 to fix the door panel. When the pressing frame 5 moves downward, it will also drive the fixed cylinder 672 and the fixed frame 671 to move downward together. When the door panel moves to the bending member 2 on the processing table 1, it will first contact the lifting strip 64. Since one side of the lifting strip 64 is inclined, when the door panel contacts the lifting strip 64, it will drive the lifting strip 64 to move upward. Since the first sliding rod 63 slides in the liquid storage cylinder 61, after the lifting strip 64 is squeezed, it will drive the first piston disk 62 and the first sliding rod 63 to slide upward in the liquid storage cylinder 61, squeezing the liquid in the liquid storage cylinder 61, so that the liquid enters the fixed cylinder 672 through the liquid inlet pipe 66. After the second piston disk 673 is squeezed by the liquid, it will move in the fixed cylinder 672 in the direction of the fixed frame 671, thereby driving the second sliding rod 674 and the moving frame 676 to move together. The moving frame 676 drives the pressing strip 677 to move together, squeezing the second spring 675. Due to the different thicknesses of the door panels, the upward movement distance of the lifting strip 64 will be different, so the movement distance of the moving frame 676 will also be different.

[0038] When the thickness of the door panel to be processed is between 3 and 5 millimeters, the extrusion strip 677 moves a short distance and can only move to contact the first arc-shaped block 684. Since the first extrusion rod 682 is slidably connected to the first cross plate 681, when the extrusion strip 677 contacts the first arc-shaped block 684, it will drive the first arc-shaped block 684 and the first extrusion rod 682 to move downward, squeezing the third spring 685. The first extrusion rod 682 drives the first pressing plate 683 to move downward to fix the door panel. Therefore, for a relatively thin door panel, it can be fixed through the cooperation between the pressing frame 5 and the first pressing plate 683. While providing sufficient pressing force, it can also avoid too large a contact area and leaving too many indentations on the surface of the door panel, affecting the appearance quality of the door panel.

[0039] Embodiment 2. Refer to Figures 1-7 , a bending device for door panel processing, including a processing table 1. A rotatable bending member 2 is arranged on the processing table 1, and the rotation of the bending member 2 is driven by a motor installed on the processing table 1. An installation frame 3 is connected to the processing table 1, and a cylinder 4 is installed on the installation frame 3. The bottom end of the extension rod of the cylinder 4 is fixed with a pressing frame 5. It further includes:

[0040] A pressing mechanism arranged on the installation frame 3, and the pressing mechanism is used to adjust the contact area between the pressing plate and the door panel according to the thickness of the door panel;

[0041] An auxiliary mechanism installed on the pressing mechanism, and the auxiliary mechanism is used to make the pressing mechanism more stable.

[0042] Furthermore, a second pressing part is arranged on the pressing frame 5. The second pressing part includes a second cross plate 691 fixed on the pressing frame 5. The second cross plate 691 is located on the side of the first cross plate 681 away from the extrusion strip 677. A second extrusion rod 692 slides on the second cross plate 691. The bottom end of the second extrusion rod 692 is fixed with a second pressing plate 693. The top end of the second extrusion rod 692 is fixed with a second arc-shaped block 694. A fourth spring 695 is sleeved on the outer surface of the second extrusion rod 692, and both ends of the fourth spring 695 are respectively fixed to the second cross plate 691 and the second arc-shaped block 694. The volume of the second pressing plate 693 is larger than that of the first pressing plate 683.

[0043] Furthermore, a third pressing part is arranged on the pressing frame 5. The third pressing part includes a third cross plate 601 fixed on the pressing frame 5. The third cross plate 601 is located on the side of the second arc-shaped block 694 away from the first arc-shaped block 684. A third extrusion rod 602 slides on the third cross plate 601. The bottom end of the third extrusion rod 602 is fixed with a third pressing plate 603. The top end of the third extrusion rod 602 is fixed with a third arc-shaped block 604. A fifth spring 605 is sleeved on the outer surface of the third extrusion rod 602, and both ends of the fifth spring 605 are respectively fixed to the third cross plate 601 and the third arc-shaped block 604. The volume of the third pressing plate 603 is larger than that of the second pressing plate 693.

[0044] When the thickness of the door panel to be processed reaches 20 mm, the moving distance of the lifting strip 64 and the extrusion strip 677 increases, and the extrusion strip 677 will move to the second arc-shaped block 694. Since the shapes of the first arc-shaped block 684 and the second arc-shaped block 694 are both arc-shaped, when the extrusion strip 677 moves to the second arc-shaped block 694, it will not affect the pressing effect of the first pressing plate 683. When the extrusion strip 677 contacts the second arc-shaped block 694, it will drive the second arc-shaped block 694 and the second extrusion rod 692 to move downward, and the second extrusion rod 692 drives the second pressing plate 693 to move downward, squeezing the fourth spring 695. Through the cooperation among the pressing frame 5, the first pressing plate 683 and the second pressing plate 693, the pressing plate is pressed, which can increase the pressing area of the door panel, thereby appropriately increasing the pressing force.

[0045] When the thickness of the door panel to be processed is between 40-50 mm, the extrusion strip 677 will move to the position of the third arc-shaped block 604 and contact the third arc-shaped block 604, thereby driving the third extrusion rod 602 and the third pressing plate 603 to move downward, squeezing the fifth spring 605. Through the cooperation among the third pressing plate 603, the pressing frame 5, the first pressing plate 683 and the second pressing plate 693, the pressing plate is pressed.

[0046] The further advantages of adopting the above are as follows: the contact area between the pressing plate and the door panel can be flexibly adjusted according to the actual thickness of the door panel. When the door panel is thinner, large-area contact can be avoided to cause indentation, ensuring that the appearance of the door panel is perfect. When the door panel is thicker, the entire pressing mechanism can be reversely linked, enabling each pressing plate to fully extend, increasing the contact area, providing a strong enough pressing force, ensuring that the door panel remains motionless during the bending process, greatly improving the bending accuracy, and effectively reducing the scrap rate.

[0047] Embodiment 3, referring to Figures 1-7 , a bending device for door panel processing, including a processing table 1, a rotatable bending member 2 is arranged on the processing table 1, the rotation of the bending member 2 is driven by a motor installed on the processing table 1, an installation frame 3 is connected to the processing table 1, a cylinder 4 is installed on the installation frame 3, and the bottom end of the extension rod of the cylinder 4 is fixed with a pressing frame 5. It further includes:

[0048] A pressing mechanism arranged on the installation frame 3, and the pressing mechanism is used to adjust the contact area between the pressing plate and the door panel according to the thickness of the door panel;

[0049] An auxiliary mechanism installed on the pressing mechanism, and the auxiliary mechanism is used to make the pressing mechanism more stable.

[0050] Further, the auxiliary mechanism includes extrusion blocks 70 fixed on the second arc-shaped block 694 and the third arc-shaped block 604. Sliders 71 are fixed on both the first arc-shaped block 684 and the second arc-shaped block 694. Vertical bars 72 are fixed on the tops of the first horizontal plate 681 and the second horizontal plate 691. The sliders 71 slide on the outer surfaces of the vertical bars 72, and rectangular shells 73 are fixed on the outer surfaces of the sliders 71.

[0051] Further, the auxiliary mechanism further includes an airbag 74 fixed inside the rectangular shell 73. A moving block 75 is fixed on the airbag 74. The moving block 75 slides inside the rectangular shell 73. A locking rod 76 is fixed on a side surface of the moving block 75 away from the airbag 74. The locking rod 76 is slidably connected to the slider 71 and the rectangular shell 73. A sixth spring 77 is sleeved on the outer surface of the locking rod 76. Two ends of the sixth spring 77 are respectively fixed to the rectangular shell 73 and the moving block 75.

[0052] Further, the auxiliary mechanism further includes air cushions 79 fixed on the third cross plate 601 and the second cross plate 691. Air inlet pipes 710 are communicated with the outer surfaces of the air cushions 79. One end of each air inlet pipe 710 away from the air cushion 79 is communicated with the airbag 74. Locking holes 78 are formed in the vertical bars 72. The locking rod 76 is slidably connected to the locking holes 78.

[0053] When the extrusion strip 677 moves to the second arc-shaped block 694, at this time, the extrusion strip 677 will cause the first arc-shaped block 684 to move to the lowest position. The first arc-shaped block 684 will drive the slider 71 to slide downward on the outer surface of the vertical bar 72 to the lowest position. At this time, the positions of the locking rod 76 and the locking hole 78 correspond to each other. Through the extrusion of the extrusion strip 677 on the second arc-shaped block 694, the second arc-shaped block 694 will gradually drive the extrusion block 70 to move downward. When it descends to a certain height, it will squeeze the air cushion 79, so that the gas in the air cushion 79 enters the airbag 74 through the air inlet pipe 710, causing the airbag 74 to expand. Since the locking rod 76 is slidably connected to the rectangular shell 73, when the airbag 74 expands, it will push the moving block 75 and the locking rod 76 in the direction of the locking hole 78. When the air cushion 79 moves to the lowest position, the locking rod 76 will be stuck into the locking hole 78, locking the slider 71 and the vertical bar 72. In this way, when the thicker door panel is bent, the pressure will be all at the first pressing plate 683. Similarly, when the extrusion strip 677 moves to the third arc-shaped block 604, the second arc-shaped block 694 and the vertical bar 72 on the second cross plate 691 can be locked. When bending a thicker door panel, the pressure will be all at the first pressing plate 683 and the second pressing plate 693. This not only ensures that the pressing mechanism is stable and immovable during the working state, but also can be quickly unlocked and adjusted when the door panel thickness is switched, with convenient and efficient operation, providing a strong guarantee for continuous door panel processing.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A bending device for door panel processing, comprising a processing table (1), characterized in that: The processing table (1) is provided with a rotatable bending member (2), the rotation of the bending member (2) is driven by a motor installed on the processing table (1), the processing table (1) is connected to a mounting frame (3), a cylinder (4) is installed on the mounting frame (3), a pressing frame (5) is fixed at the bottom end of the extension rod of the cylinder (4), and further comprises: A pressing mechanism disposed on the mounting frame (3), the pressing mechanism being used to adjust the contact area between the pressing plate and the door panel according to the thickness of the door panel; An auxiliary mechanism installed on the clamping mechanism, the auxiliary mechanism is used to make the clamping mechanism more stable.

2. The bending device for door panel processing according to claim 1, characterized in that: The clamping mechanism comprises an L-shaped block (60) fixed on the mounting frame (3), a liquid storage cylinder (61) being fixed at the bottom of the L-shaped block (60), a piston disc (62) slidingly arranged in the liquid storage cylinder (61), a slide bar (63) being fixed at the bottom of the piston disc (62), the slide bar (63) being slidably connected to the liquid storage cylinder (61), a lifting bar (64) being fixed at the bottom end of the slide bar (63), the lifting bar (64) being inclinedly arranged on a side close to the clamping frame (5), a spring (65) being sleeved on the outer surface of the slide bar (63), the two ends of the spring (65) being respectively connected to the liquid storage cylinder (61) and the lifting bar (64), a liquid inlet pipe (66) being communicated with the outer surface of the liquid storage cylinder (61), and an adjusting portion being arranged on the clamping frame (5).

3. The bending device for door panel processing according to claim 2 is characterized in that: The adjusting part comprises a fixing frame (671) fixed on the pressing frame (5), a fixing cylinder (672) being fixed on the side of the fixing frame (671), an end of the liquid inlet pipe (66) away from the liquid storage cylinder (61) being connected to the fixing cylinder (672), a piston disc 2 (673) slidingly arranged in the fixing cylinder (672), a slide rod 2 (674) being fixed on the piston disc 2 (673), the slide rod 2 (674) being slidably connected to the fixing cylinder (672), a spring 2 (675) being sleeved on the outer surface of the slide rod 2 (674), the two ends of the spring 2 (675) being fixedly connected to the piston disc 2 (673) and the fixing cylinder (672) respectively, a moving frame (676) being fixed on the end of the slide rod 2 (674) away from the piston disc 2 (673), and an extrusion strip (677) being fixed on the side of the moving frame (676) away from the slide rod 2 (674).

4. The bending device for door panel processing according to claim 3 is characterized in that: The clamping frame (5) is provided with a clamping part 1, which includes a horizontal plate 1 (681) fixed on the clamping frame (5), an extrusion rod 1 (682) sliding on the horizontal plate 1 (681), a pressure plate 1 (683) fixed to the bottom end of the extrusion rod 1 (682), an arc block 1 (684) fixed to the top end of the extrusion rod 1 (682), the arc block 1 (684) and the extrusion bar (677) are on the same horizontal line, the outer surface of the extrusion rod 1 (682) is sleeved with a spring 3 (685), and the two ends of the spring 3 (685) are respectively fixedly connected to the horizontal plate 1 (681) and the arc block 1 (684).

5. The bending device for door panel processing according to claim 4, characterized in that: The clamping frame (5) is provided with a clamping part 2, which includes a horizontal plate 2 (691) fixed on the clamping frame (5), and the horizontal plate 2 (691) is located on the side of the horizontal plate 1 (681) away from the extrusion strip (677). An extrusion rod 2 (692) is slid on the horizontal plate 2 (691), and a pressure plate 2 (693) is fixed to the bottom end of the extrusion rod 2 (692), and an arc block 2 (694) is fixed to the top end of the extrusion rod 2 (692). A spring 4 (695) is sleeved on the outer surface of the extrusion rod 2 (692), and the two ends of the spring 4 (695) are respectively fixedly connected to the horizontal plate 2 (691) and the arc block 2 (694), and the volume of the pressure plate 2 (693) is larger than that of the pressure plate 1 (683).

6. The bending device for door panel processing according to claim 5, characterized in that: The clamping frame (5) is provided with a clamping part three, and the clamping part three includes a horizontal plate three (601) fixed on the clamping frame (5), and the horizontal plate three (601) is located on the side of the arc block two (694) away from the arc block one (684). An extrusion rod three (602) is slid on the horizontal plate three (601), and a pressure plate three (603) is fixed to the bottom end of the extrusion rod three (602), and an arc block three (604) is fixed to the top end of the extrusion rod three (602). A spring five (605) is sleeved on the outer surface of the extrusion rod three (602), and the two ends of the spring five (605) are respectively fixedly connected to the horizontal plate three (601) and the arc block three (604), and the volume of the pressure plate three (603) is larger than that of the pressure plate two (693).

7. The bending device for door panel processing according to claim 6, characterized in that: The auxiliary mechanism comprises an extrusion block (70) fixed on the arc block 2 (694) and the arc block 3 (604), a slider (71) is fixed on the arc block 1 (684) and the arc block 2 (694), a vertical bar (72) is fixed on the top of the horizontal plate 1 (681) and the horizontal plate 2 (691), the slider (71) slides on the outer surface of the vertical bar (72), and a rectangular shell (73) is fixed on the outer surface of the slider (71).

8. The bending device for door panel processing according to claim 7, characterized in that: The auxiliary mechanism also includes an airbag (74) fixed in the rectangular shell (73), a moving block (75) fixed on the airbag (74), the moving block (75) sliding in the rectangular shell (73), a locking rod (76) fixed on a side of the moving block (75) away from the airbag (74), the locking rod (76) being slidably connected to the slider (71) and the rectangular shell (73), a spring six (77) being sleeved on the outer surface of the locking rod (76), the two ends of the spring six (77) being fixedly connected to the rectangular shell (73) and the moving block (75) respectively.

9. The bending device for door panel processing according to claim 8, characterized in that: The auxiliary mechanism also includes an air cushion (79) fixed on the third horizontal plate (601) and the second horizontal plate (691), the outer surface of the air cushion (79) is connected to an air intake pipe (710), the end of the air intake pipe (710) away from the air cushion (79) is connected to the air bag (74), the vertical bars (72) are each provided with a locking hole (78), and the locking rod (76) is slidably connected to the locking hole (78).

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