Bending device for automobile plate part machining

Abstract

The invention relates to the technical field of automobile part machining, and particularly discloses a bending device for automobile plate part machining, which comprises a driving piece, a rotating shaft, a sliding seat and a push plate, a fixed die is provided with a through groove in the length direction in a penetrating manner, the rotating shaft penetrates through the through groove, and the area, located at the end part of the fixed die, of the rotating shaft is provided with a threaded groove; the threaded section of the rotating shaft is in threaded connection with a sliding base, and a push plate is arranged on the sliding base. After the plate is bent, the rotating shaft circularly rotates forwards and backwards, the two sets of sliding seats synchronously reciprocate left and right after the rotating shaft rotates, the sliding seats drive the push plates to reciprocate left and right, the two sets of push plates synchronously reciprocate left and right to drive the bent plate to reciprocate left and right, and the plate can make more sufficient contact with the fixed die and the movable die during reciprocating. And therefore, stress in the plate is uniformly distributed, resilience caused by local stress concentration is reduced, the bending angle of the plate is fixed as much as possible, and the bending effect is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile part processing technology, and particularly relates to a bending device for automobile plate part processing. BACKGROUND

[0002] In the field of automobile manufacturing, some parts are produced through plate bending process. When the plate is bent, the plate is placed on the bending device, and then the plate is extruded by the dynamic die and the static die, so as to complete the bending of the plate.

[0003] At present, when the plate is bent, the force exerted by the dynamic die on the plate exceeds the yield strength of the plate material, so that the plate is bent to form plastic deformation. However, after plastic deformation and the bending pressure is removed, the elastic stress in the plate is released, which causes the plate to have a tendency to rebound, so that the bending angle of the bent plate is smaller than the expected bending angle, affecting the subsequent assembly, and thus reducing the bending effect. SUMMARY

[0004] The present application aims at the deficiencies of the prior art, and provides a bending device for automobile plate part processing, so as to solve the technical problem that the plate will rebound after being bent, resulting in a smaller bending angle and reducing the bending effect.

[0005] The object of the present application can be achieved by the following technical solutions:

[0006] A bending device for automobile plate part processing, comprising a processing table, a fixed die, a mounting frame, an extension piece one, a connecting plate and a dynamic die, the device further comprising a moving assembly, the moving assembly comprising a driving member, a rotating shaft, a sliding seat and a push plate, a through slot is provided through the length direction of the fixed die, the through slot is below the intersection of the symmetrical slopes on the fixed die, the rotating shaft passes through the through slot, one end of the rotating shaft is connected with the driving member, the area of the rotating shaft at the end of the fixed die is provided with a threaded groove, the thread directions of the two threaded grooves are the same, the threaded section of the rotating shaft is threadedly connected with the sliding seat, the sliding seat is provided with the push plate, and the two groups of push plates are respectively abutted with the end portions of the plates to be bent.

[0007] As a preferred embodiment of the above technical solution, the push plate is in a bent state, the bending angle of the push plate is equal to the included angle between the symmetrical slopes on the fixed die, and the thickness of the push plate is less than the thickness of the plate to be bent.

[0008] As a preferred embodiment of the above technical solution, a supporting plate is arranged in the through slot, and the top of the supporting plate is abutted with the bottom of the bent portion of the bent plate.

[0009] As the preferred technical scheme of the above, the movable die comprises an upper die of an upper half and a shaping die of a lower half, a cavity is provided through the upper die along the width direction of the upper die, and a compression assembly is installed in the cavity.

[0010] As the preferred technical scheme of the above, the compression assembly comprises:

[0011] A movable plate is rotatably installed at the hollowed-out part on both sides of the upper die, and the movable plate is flipped from top to bottom.

[0012] A pressing plate is installed in an installation groove provided in the upper die, the installation groove is located above the cavity, a plurality of sets of telescopic members II are installed in the installation groove, the output end of the telescopic member II is provided with a pressing plate, the both ends of the pressing plate are provided with guide rods, guide grooves are provided on the inner wall of the cavity, and the guide rods are sleeved in the guide grooves.

[0013] A connecting rod is hingedly installed between the pressing plate and the movable plate.

[0014] As the preferred technical scheme of the above, the shaping die and the movable plate are both provided with polishing materials on the side facing the slope.

[0015] As the preferred technical scheme of the above, a limiting assembly is installed on the shaping die, and the limiting assembly comprises:

[0016] A rotating plate is rotatably installed on the fixed shaft of the shaping die, and the axis of the fixed shaft coincides with the straight line at the highest part of the slope.

[0017] Telescopic plates are movably installed at the end of the rotating plate, the other ends of the two sets of telescopic plates are hingedly connected together, the both ends of the movable die are provided with pressing rods, and the pressing rods are used in cooperation with the two sets of telescopic plates hingedly connected together.

[0018] A supporting plate is movably installed on the shaft rod in the recess provided at the top of the shaping die, and the upward side of the supporting plate is flush with the slope after the supporting plate is rotated by a certain angle.

[0019] A limiting frame is provided at the bottom of the supporting plate, a clamping plate is inserted into the limiting frame, the clamping plate is in the shape of a V, and one half of the clamping plate is sleeved in the limiting frame, and the other half of the clamping plate is pressed on the surface of the bent plate.

[0020] The present application has the following beneficial effects:

[0021] 1. In the present invention, after the sheet is bent, the rotating shaft is rotated forward and reversely. After the rotating shaft rotates, the two sets of slides will move back and forth synchronously, so that the slides will drive the push plates to move back and forth. The synchronous left and right reciprocating movement of the two sets of push plates will drive the bent sheet to move back and forth. When the sheet moves back and forth, it will contact the fixed mold and the movable mold more fully, thereby promoting uniform stress distribution inside the sheet, thereby reducing springback caused by local stress concentration, making the bending angle of the sheet as fixed as possible, and thus enhancing the bending effect;

[0022] 2. In the present invention, when the movable mold moves downward to bend the plate, the second telescopic member extends to move the pressing plate downward, so that the multiple groups of connecting rods symmetrical on both sides drive the movable plates on both sides to expand outward, so that the two movable plates are respectively pressed against the two opposite sides of the plate after bending, thereby increasing the force-bearing area of ​​the plate, thereby further promoting the plastic deformation of the plate. At the same time, the reciprocating movement of the plate can further promote the plastic deformation of the plate, reduce springback, make the bending angle of the plate as fixed as possible, and further enhance the bending effect;

[0023] 3. In the present invention, when the movable die is punching the sheet, the lower pressure rod presses down the hinge of the two telescopic plates, so that the two telescopic plates drive the two rotating plates to rotate closer to each other, thereby causing the two supporting plates to rotate closer to each other. In this way, the push plate will support the two bent sides of the sheet when it is bent, so that the bent surface of the sheet remains flat when it is bent. In this way, the clamping assembly can be used to further shape the bent sheet when the sheet is bent, effectively avoiding the rebound of the sheet, and further enhancing the bending effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure after the movable mold and the fixed mold are separated;

[0026] Figure 3 It is a schematic diagram of the structure of the mobile component;

[0027] Figure 4 Schematic diagram of the support plate structure;

[0028] Figure 5 Schematic diagram of the movable mold structure;

[0029] Figure 6 Schematic diagram of the compression assembly structure;

[0030] Figure 7 Schematic diagram of the guide rod and guide groove structure;

[0031] Figure 8 It is a schematic diagram of the limit component structure.

[0032] In the picture:

[0033] 1. Processing table; 2. Fixed mold; 21. Slope; 22. Through slot; 23. Fixed shaft; 24. Groove; 25. Shaft; 3. Mounting frame; 4. Telescopic part 1; 41. Connecting plate; 5. Moving mold; 51. Upper mold; 52. Fixing mold; 53. Cavity; 54. Mounting slot; 55. Guide slot; 56. Lower pressure rod; 6. Moving assembly; 61. Driving part; 62. Rotating shaft; 63. Slide; 64. Push plate; 65. Support plate; 7. Clamping assembly; 71. Movable plate; 72. Telescopic part 2; 73. Pressing plate; 74. Connecting rod; 75. Guide rod; 8. Limiting assembly; 81. Rotating plate; 82. Telescopic plate; 83. Support plate; 84. Limiting frame; 85. Clamp. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0035] like Figures 1-4 As shown, a bending device for processing automobile sheet parts includes a processing table 1, a fixed mold 2, a mounting frame 3, a telescopic member 4, a connecting plate 41 and a movable mold 5. The device also includes a moving assembly 6, which includes a driving member 61, a rotating shaft 62, a slide 63 and a push plate 64. A through groove 22 is opened on the fixed mold 2 along its length direction. The through groove 22 is located below the intersection of the symmetrical slopes 21 on the fixed mold 2. The rotating shaft 62 passes through the through groove 22. One end of the rotating shaft 62 is connected to the driving member 61. A threaded groove is provided in the area where the rotating shaft 62 is located at the end of the fixed mold 2. The thread directions of the two threaded grooves are the same. The threaded section of the rotating shaft 62 is threadedly connected to the slide 63. A push plate 64 is provided on the slide 63. The two groups of push plates 64 are respectively against the ends of the sheet to be bent.

[0036] Furthermore, the push plate 64 is in a bent state, and its bending angle is equal to the angle between the symmetrical slopes 21 on the fixed mold 2, and the thickness of the push plate 64 is less than the thickness of the plate to be bent, so as to avoid the push plate 64 being blocked by the movable mold 5 when moving.

[0037] Furthermore, a support plate 65 is provided in the through groove 22 , and the top of the support plate 65 abuts against the bottom of the bent portion of the bent plate.

[0038] In actual application, the plate is placed on the fixed die 2, and then the bending treatment of the plate is performed by extending the telescopic part one 4 to make the movable die 5 move downward. After bending, the rotation shaft 62 is cyclically reversed by starting the driving part 61, and the rotation of the rotation shaft 62 will make the two groups of sliding seats 63 move synchronously and reciprocatingly left and right. In this way, the sliding seats 63 will drive the push plates 64 to move reciprocatingly left and right, and the synchronous reciprocating movement of the two groups of push plates 64 will drive the bent plate to move reciprocatingly left and right. The plate will be in contact with the fixed die 2 and the movable die 5 more fully during reciprocating movement, so as to promote the uniform distribution of internal stress of the plate, reduce the springback caused by local stress concentration, make the bending angle of the plate as fixed as possible, and enhance the bending effect.

[0039] When the plate moves reciprocatingly, the plate is adjusted under the constraint of the fixed die 2 and the movable die 5, so as to offset part of the springback. The final shape is achieved by accumulating small deformations for multiple times, the bending angle of the plate is as fixed as possible, and the bending effect is further enhanced.

[0040] The reciprocating movement of the plate will generate friction with the slope 21, the support plate 65 and the movable die 5 on the movable die 2, that is, the top and bottom of the bent plate will generate friction. Heat will be generated during friction, so as to heat the top and bottom of the plate. In this way, the yield strength of the plate can be reduced, the plastic deformation of the plate is promoted, the springback is reduced, the bending angle of the plate is as fixed as possible, and the bending effect is further enhanced. In addition, lubricant can be appropriately added during the reciprocating movement of the plate, so as to reduce the wear of the plate caused by friction.

[0041] As shown in Figures 4-7 The movable die 5 includes an upper die 51 of an upper half and a shaping die 52 of a lower half. The cavity 53 is provided in the upper die 51 along the width direction thereof, and the compression assembly 7 is installed in the cavity 53.

[0042] Further, the compression assembly 7 includes:

[0043] The movable plate 71 is rotatably installed on both sides of the upper die 51, and the movable plate 71 is flipped from top to bottom.

[0044] The pressing plate 73 is installed in the installation groove 54 provided in the upper die 51, and the installation groove 54 is located above the cavity 53. A plurality of telescopic parts two 72 are installed in the installation groove 54, and the output end of the telescopic part two 72 is provided with the pressing plate 73. The both ends of the pressing plate 73 are provided with the guide rod 75, and the guide groove 55 is provided on the inner wall of the cavity 53. The guide rod 75 is sleeved in the guide groove 55.

[0045] The connecting rod 74 is hingedly installed between the pressing plate 73 and the movable plate 71.

[0046] Further, the shaping die 52 and the side of the movable plate 71 facing the slope 21 are provided with polishing materials.

[0047] In actual application, in the process of moving the die 5 downward to bend the plate, the telescopic part 2 is elongated to move the pressing plate 73 downward, so that the several groups of connecting rods 74 on both sides symmetrically drive the two movable plates 71 to expand outward, and the two movable plates 71 are pressed against the opposite two surfaces of the plate after bending, so as to increase the stress area of the plate, thereby further promoting the plastic deformation of the plate, and cooperating with the reciprocating movement of the plate, the plastic deformation of the plate can be further promoted, the springback is reduced, the bending angle of the plate is as fixed as possible, and the bending effect is further enhanced.

[0048] When the plate is bent, wrinkles will appear on the top bending area of the plate, which will reduce the product appearance, and the uneven wrinkles may also affect the subsequent assembly. When the plate moves back and forth, the polishing material on the movable plate 71 and the shaping die 52 can polish the wrinkles on the top of the plate, so that the area with wrinkles is polished flat, thereby improving the product appearance and avoiding the influence of uneven wrinkles on subsequent assembly. In addition, the polishing will further heat the bending area of the plate, thereby further promoting the plastic deformation of the plate, further shaping the plate, and further enhancing the bending effect.

[0049] As shown in Figure 3 and Figure 8 , a limiting assembly 8 is installed on the fixed die 2, and the limiting assembly 8 comprises:

[0050] A rotating plate 81 is symmetrically fixed on both ends of the fixed die 2, the axis of the fixed shaft 23 coincides with the straight line at the highest part of the slope 21, and the rotating plate 81 is rotatably installed on the fixed shaft 23.

[0051] A telescopic plate 82 is movably installed on the end of the rotating plate 81, the other end of the two groups of telescopic plates 82 is hinged together, and the lower pressing rod 56 is arranged on both ends of the movable die 5 and cooperates with the two groups of telescopic plates 82 hinged together.

[0052] A supporting plate 83 is symmetrically provided with a recess 24 on the top of the fixed die 2, an axle 25 is arranged in the recess 24, and the supporting plate 83 is rotatably installed on the axle 25. The upper surface of the supporting plate 83 is flush with the slope 21 after the supporting plate 83 is rotated by a certain angle, the supporting plate 83 is fixedly connected with the rotating plate 81, and the supporting plate 83 is used for supporting the plate during bending.

[0053] Further, the bottom of the supporting plate 83 is provided with a limiting frame 84, the clamping plate 85 is inserted into the limiting frame 84, the clamping plate 85 is in the shape of a, and half of the clamping plate 85 is sleeved in the limiting frame 84 and the other half is pressed on the surface of the bent plate.

[0054] In actual application, when the movable die 5 moves downward, the lower pressing rod 56 moves downward, when the movable die 5 stamps the plate, the lower pressing rod 56 presses the hinged part of the two telescopic plates 82, so that the two telescopic plates 82 drive the two rotating plates 81 to rotate and approach each other, so that the two supporting plates 83 rotate and approach each other, thus the supporting plate 83 supports the two sides of the plate when the plate is bent, so that the bent surface of the plate is kept flat when the plate is bent, so that the bent plate can be further shaped when the plate is bent, the springback of the plate is effectively avoided, the bending effect is further enhanced; by clamping the plate with the clamping plate 85 and supporting the plate with the supporting plate 83, the plate can be bent, the plate can be shaped after bending, and the bending effect is further enhanced.

[0055] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A bending device for processing automobile sheet parts, comprising a processing table (1), a fixed die (2), a mounting frame (3), a telescopic member (4), a connecting plate (41) and a movable die (5), characterized in that: The device further comprises a moving assembly (6), the moving assembly (6) comprising a driving member (61), a rotating shaft (62), a slide (63) and a push plate (64), a through slot (22) being provided on the fixed die (2) along its length direction, the through slot (22) being located below the intersection of the symmetrical slopes (21) on the fixed die (2), the rotating shaft (62) passing through the through slot (22), one end of the rotating shaft (62) being connected to the driving member (61), a threaded groove being provided in the area of ​​the rotating shaft (62) located at the end of the fixed die (2), the threaded directions of the two threaded grooves being the same, the threaded section of the rotating shaft (62) being threadedly connected to the slide (63), a push plate (64) being provided on the slide (63), and two groups of the push plates (64) respectively abutting against the ends of the plate to be bent.

2. The bending device for processing automobile sheet parts according to claim 1, characterized in that: The push plate (64) is in a bent state, and its bending angle is equal to the angle between the symmetrical slopes (21) on the fixed mold (2). The thickness of the push plate (64) is smaller than the thickness of the plate to be bent.

3. The bending device for processing automobile sheet parts according to claim 2, characterized in that: A support plate (65) is provided in the through groove (22), and the top of the support plate (65) abuts against the bottom of the bent portion of the bent plate.

4. The bending device for processing automobile sheet parts according to claim 1, characterized in that: The movable mold (5) comprises an upper mold (51) in the upper half and a shaping mold (52) in the lower half. A cavity (53) is provided in the upper mold (51) along its width direction, and a pressing assembly (7) is installed in the cavity (53).

5. The bending device for processing automobile sheet parts according to claim 4, characterized in that: The pressing assembly (7) comprises: A movable plate (71), wherein the hollowed-out areas on both sides of the upper mold (51) are rotatably mounted with movable plates (71), and the movable plates (71) are turned from top to bottom; A pressure plate (73), a mounting groove (54) is provided in the upper mold (51), the mounting groove (54) is located above the cavity (53), a plurality of groups of telescopic parts (72) are installed in the mounting groove (54), a pressure plate (73) is provided at the output end of the telescopic parts (72), guide rods (75) are provided at both ends of the pressure plate (73), a guide groove (55) is provided on the inner wall of the cavity (53), and the guide rod (75) is sleeved in the guide groove (55); A connecting rod (74) is hingedly installed between the pressing plate (73) and the movable plate (71).

6. The bending device for processing automobile sheet parts according to claim 5, characterized in that: The shaping die (52) and the movable plate (71) are both provided with grinding materials on one side facing the slope (21).

7. The bending device for processing automobile sheet parts according to claim 1, characterized in that: A limiting assembly (8) is installed on the fixed mold (2), and the limiting assembly (8) includes: A rotating plate (81), fixed shafts (23) are symmetrically fixed at both ends of the fixed mold (2), the axis of the fixed shaft (23) coincides with the straight line at the highest point of the slope (21), and a rotating plate (81) is rotatably mounted on the fixed shaft (23); A telescopic plate (82), the end of the rotating plate (81) is movably mounted with a telescopic plate (82), the other ends of the two sets of telescopic plates (82) are hinged together, and both ends of the movable mold (5) are provided with a lower pressure rod (56), and the lower pressure rod (56) is used in conjunction with the two sets of telescopic plates (82) hinged together; A support plate (83) is symmetrically provided with a groove (24) on the top of the fixed mold (2), a shaft (25) is provided in the groove (24), and a support plate (83) is rotatably mounted on the shaft (25). After the support plate (83) rotates a certain angle, the upward side of the support plate (83) is flush with the slope (21), and the support plate (83) is fixedly connected to the rotating plate (81). The support plate (83) is used to support the plate during bending.

8. The bending device for processing automobile sheet parts according to claim 7, characterized in that: A limiting frame (84) is provided at the bottom of the support plate (83), and a clamping plate (85) is inserted into the limiting frame (84). The clamping plate (85) is in the shape of a U-shaped plate, with half of the clamping plate (85) being sleeved in the limiting frame (84) and the other half being pressed against the surface of the bent plate.

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