Workpiece rolling forming device for vehicle

Abstract

The invention relates to the technical field of vehicle workpiece production, in particular to a vehicle workpiece roll forming device which comprises a base of a rectangular structure; the number of the traction pieces is two, and the two traction pieces are symmetrically installed at the upper end of the base; the multiple rolling forming pieces are arranged, the multiple rolling forming pieces are installed at the upper end of the base at equal intervals, and the multiple rolling forming pieces are located between the two traction pieces; the driving part is mounted at the upper end of the base, and the driving part is respectively connected with the two traction parts and the plurality of rolling forming parts; the guiding piece is arranged at the upper end of the base, and the front end of the guiding piece is connected with the rear end of the traction piece located on the rear side, so that double-position synchronous traction operation is carried out on the metal plate before and after rolling forming, and the probability that the metal plate arches and deforms in the rolling forming process is effectively reduced; probabilities of defects and the like of products formed by rolling are effectively reduced, and the using effect and the machining quality are effectively guaranteed.

Description

Technical Field

[0001] This invention is a roll forming device for automotive parts, belonging to the field of automotive parts production technology. Background Technology

[0002] Roll forming is a process that uses continuous rollers to progressively plastically deform metal sheets and strips, processing them into automotive parts such as door bumper beams. This process boasts core advantages such as high forming precision, high material utilization, and high production efficiency, and is currently widely used to complete related processing operations. Existing roll forming equipment mainly consists of a platform, a traction module located on top of the platform, and multiple roll forming modules installed on top of the platform and behind the traction module. The conventional operating procedure is as follows: the metal sheet and strip are sequentially passed through the traction module and multiple roll forming modules. The traction module applies traction force to the metal sheet and strip, driving it to move within each roll forming module. The multiple roll forming modules achieve progressive plastic deformation of the metal sheet and strip, ultimately forming the target automotive part. This process effectively reduces the probability of arching deformation of the metal sheet during roll forming, and effectively reduces the probability of defects in the roll-formed products. However, existing traction modules generally employ a dual-roller structure, which is prone to arching and deformation during the pushing of the metal strip to the roll forming module, significantly increasing the risk of subsequent workpiece dimensional deviations. A dual-traction module design, which synchronously tractions the metal strip at both the infeed and outlet ends, ensures the stability of the metal strip's movement speed within the roll forming area. However, this solution still has the risk of slippage, causing fluctuations in the metal strip's feed speed. Adjusting the extrusion pressure of the dual traction modules to suppress slippage would significantly increase the probability of excessive deformation of the metal strip, thus affecting the processing effect and quality of the equipment. Summary of the Invention

[0003] To address the problems in the prior art, the present invention provides a roll forming apparatus for automotive workpieces.

[0004] The technical solution adopted by this invention to solve its technical problem is: A roll forming apparatus for automotive parts, comprising: The base has a rectangular structure; Two traction components are provided, and the two traction components are symmetrically installed on the upper end of the base. A roll-formed part, wherein multiple roll-formed parts are provided, and the multiple roll-formed parts are equidistantly installed on the upper end of the base, and the multiple roll-formed parts are located between two traction members; A driving component is installed on the upper end of the base, and the driving component is connected to two traction components and multiple roll forming components respectively; A guide is disposed on the upper end of the base, and the front end of the guide is connected to the rear end of the traction member located at the rear.

[0005] Furthermore, the roll forming part includes a first frame, which is mounted on the upper end of the base and has a U-shaped structure. An upper roll and a lower roll are rotatably connected between two vertical parts of the first frame, and the upper roll is located directly above the lower roll.

[0006] Furthermore, the traction component includes a second frame, which is disposed on the upper end of the base and is located on the outer side of the first frame. The second frame has a U-shaped structure, and the vertical part of the second frame is arranged in a T-shape. An upper roller and a lower roller are rotatably connected between the two vertical parts of the second frame, and the upper roller is located directly above the lower roller. The annular end face of the lower roller is recessed inward to form an annular groove, and an auxiliary structure is fitted inside the annular groove.

[0007] Furthermore, the auxiliary structure includes an outer conveyor belt, a first roller, a second roller, and an inner conveyor belt. The first roller and the second roller are rotatably connected between two vertical parts of the second frame, and the first roller is located directly in front of the second roller. The inner conveyor belt is fitted into an annular groove, and the annular wall inside the annular groove meshes with the rear wall inside the inner conveyor belt. The annular end of the second roller meshes with the front wall inside the inner conveyor belt, and the inner conveyor belt is located behind the first roller. The outer end face of the inner conveyor belt is recessed inward to form a groove, and the outer conveyor belt is fitted inside the groove. The annular end of the first roller meshes with the inner front wall of the outer conveyor belt. The middle of the outer end face of the outer conveyor belt is recessed inward to form multiple suction holes, and the suction holes penetrate the outer conveyor belt. A separation component is attached to the top of the inner side of the outer conveyor belt, and the separation component is located in front of and above the first roller. The separation component is set between two vertical parts of the second frame, and the rear end of the separation component extends into the mutual contact position between the outer conveyor belt and the inner conveyor belt. An expansion component is installed in each of the multiple suction holes.

[0008] Furthermore, the separation component includes a rectangular box, which is attached to the top of the inner side of the outer conveyor belt, with the opening of the rectangular box facing rearward. Fixing plates are installed at both ends of the rectangular box, and the rectangular box is located above and in front of the first roller. The outward ends of the two fixing plates are respectively connected to the inward ends of the two vertical parts of the second frame. A connecting plate is slidably disposed inside the rectangular box, and the connecting plate extends out of the rear side of the rectangular box. A separation plate is installed at the rear end of the connecting plate. The separation plate has a right-angled triangular cross-section, and the upper surface of the separation plate is in contact with the inner top surface of the outer conveyor belt. A pressure strip is installed at the lower end of the inclined surface of the separation plate, and the pressure strip is located directly below the suction hole on the upper side. A pusher is installed inside the rectangular box, and the rear end of the pusher is connected to the front end of the connecting plate.

[0009] Furthermore, the pusher includes an electromagnet, a magnetic plate, and two elastic elements. The two elastic elements are symmetrically installed between the front wall of the rectangular box and the front end of the connecting plate. The magnetic plate is provided at the front end of the connecting plate and is located between the two elastic elements. The electromagnet is installed on the front wall of the rectangular box and is located between the two elastic elements. The electromagnet is located directly in front of the magnetic plate, and the electromagnet and the magnetic plate are arranged to repel each other.

[0010] Furthermore, the driving component includes a driving device, which is installed at the upper front end of the base and located on the right side of the second frame. A second gear is provided at the front end of the output shaft of the driving device, and a worm gear is installed on the left side of the second gear. The worm gear is rotatably connected to the right ends of the two second frames and the right ends of the multiple first frames through bearing seats. A first gear is installed at the annular end of the worm gear, and the first gear and the second gear are connected by a synchronous belt. The shaft portions of the first roller and the lower roller both extend out of the right side of the second frame. A third worm gear is installed at the right end of the shaft portions of both first rollers, and the third worm gear meshes with the lower end of the worm. A second worm gear is provided at the right end of the shaft portions of both lower rollers, and the second worm gear meshes with the lower end of the worm. The shaft portion of the lower roller extends out of the right side of the first frame. A first worm gear is installed at the right end of the shaft portions of multiple lower rollers, and the first worm gear meshes with the lower end of the worm.

[0011] Furthermore, the guide includes two mounting plates with a T-shaped cross-section. The vertical portions of the two mounting plates are symmetrically mounted on the upper end of the base, and the front ends of the vertical portions of the two mounting plates are respectively connected to the rear ends of the two vertical portions of the second frame located on the rear side. Multiple material support rollers are equidistantly rotatably connected between the two mounting plates. The multiple material support rollers located between the horizontal portions of the two mounting plates are arranged in an arc-shaped structure, and the multiple material support rollers located between the vertical portions of the two mounting plates are arranged in a straight line. Two round rods are symmetrically installed between the vertical portions of the two mounting plates. Two limiting plates are symmetrically arranged between the vertical portions of the two mounting plates, and the lower end of the limiting plate is attached to the round rod. Two guide cylinders are symmetrically installed on the upper end of the limiting plate, and the two guide cylinders are slidably arranged on the outer ends of the two round rods respectively. The two limiting plates are rotatably connected to adjusting screws at their outward ends. The two adjusting screws pass through the two mounting plates respectively, and the adjusting screws are threadedly connected to the mounting plates.

[0012] Furthermore, the expansion component includes a cylinder, which is movably installed inside the suction hole and extends outward from the suction hole. A rubber pad is provided at the outward end of the cylinder, and multiple support arms are equidistantly and movably arranged at the inner annular end of the cylinder. The multiple support arms are arranged in a conical structure that is narrower on the outside and wider on the inside. A hemisphere is movably installed at the other end of each of the multiple support arms, and the multiple hemispheres are equidistantly embedded in the annular inner wall of the suction hole.

[0013] The beneficial effects of this invention are: The motor, second gear, first gear, worm gear, two second worm wheels, and two third worm wheels synchronize the rotation of the two lower rollers and the two first rollers. With the assistance of the two upper rollers, the metal sheet moves forward within the space between the two second frames. This achieves simultaneous traction of the metal sheet before and after roll forming, effectively reducing the probability of arching deformation during roll forming and minimizing defects in the rolled products. This ensures optimal performance and processing quality. Simultaneously, with the assistance of the lower rollers, the outer conveyor belt circulates, and with the assistance of the second rollers, the inner conveyor belt circulates. The grooves on the inner conveyor belt, facing inwards, align with the inward-facing ends of the suction holes. The opening is sealed, and the downward pressure from the metal sheet causes the rubber pad and cylinder to move downwards. This causes the corresponding suction holes to expand outwards through multiple support arms and hemispheres. The upper roller then blocks the metal sheet, bringing it into contact with the outward-facing end of the corresponding suction hole, gradually sealing the opening. At this point, the suction hole creates negative pressure due to the expanded space. With the assistance of this negative pressure, the metal sheet undergoes variable multi-point adsorption, thus assisting in the forward traction of the metal sheet. This variable multi-point adsorption helps to assist the traction movement of the metal sheet, effectively reducing the probability of slippage and excessive deformation during traction, and ensuring the performance and processing quality. Attached Figure Description

[0014] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a roll forming device for automotive parts according to the present invention; Figure 2 This is a perspective view of a roll forming apparatus for automotive parts according to the present invention; Figure 3 This is a cross-sectional view of a roll forming apparatus for automotive parts according to the present invention; Figure 4 for Figure 3 Enlarged view of section A in the middle; Figure 5 for Figure 4 Enlarged view of section B in the middle; Figure 6 This is a perspective view of the worm gear in a roll forming device for automotive parts according to the present invention; Figure 7 This is a perspective view of the first frame in a roll forming apparatus for automotive parts according to the present invention. Figure 8 This is a perspective view of the mounting plate in a roll forming device for automotive parts according to the present invention; Figure 9 This is a perspective view of the second frame in a roll forming apparatus for automotive parts according to the present invention; Figure 10 This is a perspective view of the lower roller in a roll forming device for automotive parts according to the present invention. Figure 11 This is an assembly diagram of the outer conveyor belt and the inner conveyor belt in a roll forming device for automotive parts according to the present invention; Figure 12 This is a perspective view of a rectangular box in a roll forming apparatus for automotive parts according to the present invention; Figure 13 This is a perspective view of the separation plate in a roll forming device for automotive parts according to the present invention; Figure 14 This is a schematic diagram of another embodiment of the roll forming apparatus for automotive parts according to the present invention.

[0015] In the picture: 1. Base; 2. First frame; 21. First worm gear; 22. Upper roller; 23. Lower roller. 3. Worm gear; 31. First gear; 4. Mounting plate; 41. Material support roller; 42. Limiting plate; 43. Adjusting screw; 44. Round rod; 45. Guide cylinder; 5. Second frame; 51. Upper roller; 52. Lower roller; 53. Second worm gear; 54. Annular groove; 541. Convex sphere; 6. Outer conveyor belt; 61. Third worm gear; 62. First roller; 63. Suction hole; 631. Cylinder; 632. Rubber pad; 633. Support arm; 634. Hemisphere; 64. Second roller; 65. Inner conveyor belt; 651. Groove. 7. Motor; 71. Second gear; 8. Rectangular box; 81. Separation plate; 811. Pressure strip; 82. Fixing plate; 83. Connecting plate; 84. Elastic element; 85. Electromagnet; 86. Magnetic plate. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] Example 1: As Figures 1-11As shown, a roll forming device for automotive workpieces is provided, comprising: a rectangular base 1, two U-shaped second frames 5 symmetrically arranged on the upper end of the base 1, with the vertical parts of the second frames 5 arranged in a T-shape, the second frames 5 providing mounting carriers for components such as upper rollers 51, and the two upper rollers 51 being rotatably connected between the two vertical parts of the two second frames 5 respectively, and the two lower rollers 52 being rotatably connected between the two vertical parts of the two second frames 5 respectively, with the upper rollers 51 located directly above the lower rollers 52, the upper rollers 51 and the lower rollers 52 working together to traction the material; Annular grooves 54 are formed by inward recesses on the annular end faces of the two lower rollers 52. The annular grooves 54 provide installation space for components such as the inner conveyor belt 65. The two second rollers 64 are rotatably connected between the two vertical parts of the two second frames 5. The second rollers 64 cooperate with the lower rollers 52 to make the inner conveyor belt 65 move and fit the inner conveyor belt 65 into the annular grooves 54. The annular wall inside the annular groove 54 meshes with the rear wall inside the inner conveyor belt 65. The annular end of the second roller 64 meshes with the front wall inside the inner conveyor belt 65. The inner conveyor belt 65 is located behind the first roller 62. The inner conveyor belt 65 seals the inward end of the suction hole 63 on the outer conveyor belt 6. Two first rollers 62 are rotatably connected between two vertical parts of the second frame 5, with the first rollers 62 located directly in front of the second rollers 64. The annular end of the first rollers 62 meshes with the inner front wall of the outer conveyor belt 6. Grooves 651 are formed by inward indentation on the outer end faces of the two inner conveyor belts 65. The two outer conveyor belts 6 are respectively fitted into the two grooves 651. The first rollers 62 cooperate with the lower rollers 52 to make the outer conveyor belts 6 move, and the grooves 651 restrict the installation of the outer conveyor belts 6. Multiple suction holes 63 are formed inwardly in the middle of the outer end face of the outer conveyor belt 6, and the suction holes 63 penetrate the outer conveyor belt 6. The material is adsorbed at the lower end through the suction holes 63. Both the outer conveyor belt 6 and the inner conveyor belt 65 are made of rubber. The outer end face of the outer conveyor belt 6 is located outside the outer end face of the lower roller 52, and the outer end face of the inner conveyor belt 65 is located inside the annular groove 54. Multiple cylinders 631 extending outward from suction holes 63 are movably installed within the multiple suction holes 63. The cylinders 631 provide a mounting carrier for components such as rubber pads 632, and the rubber pads 632 are placed on the outer end of the cylinders 631 to protect the cylinders 631 and the material. Multiple support arms 633 are equidistantly movably installed on the inner annular end of the cylinders 631, and the multiple support arms 633 are arranged in a conical structure that is narrow on the outside and wide on the inside. The support arms 633 connect the cylinders 631 and the hemispheres 634, and the multiple hemispheres 634 are movably installed on the other end of the multiple support arms 633. The multiple hemispheres 634 are equidistantly embedded in the annular inner wall of the suction holes 63. The multiple hemispheres 634 work together to cause the suction holes 63 to expand. Multiple U-shaped first frames 2 are equidistantly mounted on the upper end of the base 1, and the multiple first frames 2 are located between two second frames 5. The first frames 2 provide a mounting carrier for components such as upper rollers 22, and the multiple upper rollers 22 are rotatably connected between two vertical parts of the multiple first frames 2. The multiple lower rollers 23 are rotatably connected between two vertical parts of the multiple first frames 2, and the upper rollers 22 are located directly above the lower rollers 23. The size and appearance of the multiple upper rollers 22 and the multiple lower rollers 23 are arranged in a continuous changing state from back to front. The multiple upper rollers 22 and the multiple lower rollers 23 are used in conjunction to roll the metal sheet in sequence, thereby roll forming the metal sheet into a workpiece. The fixed part of the drive device located on the right side of the second frame 5 is installed on the upper front end of the base 1. The drive device drives the second gear 71 to rotate. The drive device can be a motor 7. The worm 3 is rotatably connected to the right end of the two second frames 5 and the right end of the multiple first frames 2 through the bearing seat. The worm 3 causes the first worm wheel 21 and other components to rotate. The second gear 71 is set on the front end of the output shaft of the drive device and is located on the right side of the worm 3. The first gear 31 is installed on the annular end of the worm 3 and is connected to the second gear 71 by a timing belt. The first gear 31, the second gear 71 and the timing belt work together to rotate the worm 3. The shafts of the two first rollers 62 are extended out of the right side of the two second frames 5 respectively, and the two third worm gears 61 are installed on the right end of the shafts of the two first rollers 62 respectively. The two third worm gears 61 are both meshed on the lower end of the worm 3. The first rollers 62 are rotated through the third worm gears 61. The shafts of the two lower rollers 52 extend out of the right side of the two second frames 5 respectively, and the two second worm gears 53 are respectively set on the right end of the shaft of the two lower rollers 52. The two second worm gears 53 are meshed on the lower end of the worm 3. The lower rollers 52 are rotated through the second worm gears 53. The shafts of the multiple lower rollers 23 extend out of the right side of the multiple first frames 2 respectively, and the multiple first worm gears 21 are respectively installed on the right end of the shaft of the multiple lower rollers 23. The multiple first worm gears 21 are meshed on the lower end of the worm 3. The lower rollers 23 are rotated through the first worm gears 21. Two T-shaped mounting plates 4 are symmetrically mounted on the upper part of the base 1. The front ends of the vertical parts of the two mounting plates 4 are respectively connected to the rear ends of the two vertical parts of the second frame 5 located on the rear side. The two mounting plates 4 work together to provide a mounting carrier for components such as material support rollers 41. Multiple material support rollers 41 are equidistantly rotatably connected between the two mounting plates 4. The multiple material support rollers 41 located between the horizontal parts of the two mounting plates 4 are arranged in an arc structure, and the multiple material support rollers 41 located between the vertical parts of the two mounting plates 4 are arranged in a straight line. The multiple material support rollers 41 work together to guide the metal sheet. Two round rods 44 are symmetrically installed between the vertical parts of the two mounting plates 4. The round rods 44 guide the movement of the guide cylinder 45. Two limiting plates 42 are symmetrically arranged between the vertical parts of the two mounting plates 4, and the lower end of the limiting plate 42 is attached to the round rod 44. The two limiting plates 42 work together to limit the metal sheet material that is guided in. Two guide cylinders 45 are symmetrically installed on the upper ends of the two limiting plates 42, and the two guide cylinders 45 are slidably set on the outer ends of the two round rods 44 respectively. The guide cylinders 45 and the round rods 44 work together to guide the movement of the limiting plates 42. Two adjusting screws 43 are rotatably connected to the outer ends of the two limiting plates 42 respectively, and the two adjusting screws 43 pass through the two mounting plates 4 respectively. The adjusting screws 43 are threadedly connected to the mounting plates 4. The left and right positions of the limiting plates 42 are adjusted by adjusting the adjusting screws 43.

[0018] Before use, rotate the two adjusting screws 43. Since the adjusting screws 43 are threadedly connected to the mounting plate 4, the adjusting screws 43 rotate and move inward at the same time, thereby moving the limiting plate 42 inward to a suitable position, thereby adjusting the distance between the two limiting plates 42 and placing the space between the two limiting plates 42 in the middle position. Then, pull out the end of the rolled metal sheet on the coil rack, and then pass the released metal sheet through the cutting and welding machine in sequence. Then, guide the released metal sheet into the storage pit, and then pass the released metal sheet through the restricted space formed between the two limiting plates 42. The released metal sheet then passes sequentially through the space formed between the upper roller 51 and the lower roller 52 located on the front side, the space formed between multiple upper pressure rollers 22 and multiple lower pressure rollers 23, and the space formed between the upper roller 51 and the lower roller 52 located on the rear side. This achieves the use of two limiting plates 42 to limit the metal sheet, effectively reducing the probability of the metal sheet deviating before roll forming, effectively reducing the probability of dimensional errors in the roll-formed product, and effectively ensuring the use effect and processing quality. When in use, the motor 7 is started, which drives the second gear 71 to rotate. With the assistance of the synchronous belt, the first gear 31 rotates, which in turn causes the worm 3 to rotate. Since the worm 3 meshes with two second worm wheels 53, multiple first worm wheels 21 and two third worm wheels 61 respectively, the rotation of the worm 3 will cause the two second worm wheels 53, multiple first worm wheels 21 and two third worm wheels 61 to rotate synchronously. During the rotation of the two second worm gears 53, the two lower rollers 52 rotate synchronously, and with the assistance of the two upper rollers 51, the metal sheet moves forward within the space formed between the two second frames 5. During the rotation of the multiple first worm gears 21, the multiple lower pressure rollers 23 rotate synchronously, and with the assistance of the multiple upper pressure rollers 22, the metal sheet undergoes progressive plastic deformation, thereby roll forming the metal sheet into an automotive workpiece. This achieves dual-position synchronous traction operation of the metal sheet before and after roll forming, effectively reducing the probability of arching deformation of the metal sheet during roll forming, effectively reducing the probability of defects in the roll-formed products, and effectively ensuring the performance and processing quality.

[0019] During the rotation of the two third worm gears 61, the two first rollers 62 will rotate synchronously. Since the first rollers 62 are engaged on the inner front wall of the outer conveyor belt 6, the rotation of the first rollers 62, with the assistance of the lower rollers 52, causes the outer conveyor belt 6 to circulate. At the same time, since the annular groove 54 on the lower rollers 52 is engaged on the inner rear wall of the inner conveyor belt 65, the rotation of the lower rollers 52, with the assistance of the second rollers 64, causes the inner conveyor belt 65 to circulate. When the suction hole 63 located on the lower side of the outer conveyor belt 6 moves to the lower side of the second roller 64, the inner end of the corresponding suction hole 63 fits against the inner wall of the groove 651, thereby sealing the inner opening of the suction hole 63. Then the sealed suction hole 63 continues to move. When the sealed suction hole 63 moves from the bottom to the top, it will cause the corresponding cylinder 631 and rubber pad 632 to move from the bottom to the top. Then the rubber pad 632 first contacts the lower end face of the metal plate and is then pressed down by the metal plate, which causes the rubber pad 632 and cylinder 631 to move downward, thereby causing the upper part of the corresponding multiple support arms 633 to move downward, which in turn causes the lower part of the multiple support arms 633 to expand outward, which in turn causes the hemisphere 634 to expand outward, which in turn causes the inside of the suction hole 63 to expand outward. Then, the upper roller 51 blocks the metal sheet, causing it to come into contact with the outward end of the corresponding suction hole 63, thereby gradually sealing the outward opening of the suction hole 63. At this time, the suction hole 63 forms a negative pressure due to the expansion of space, and under the assistance of the negative pressure, it will perform variable multi-point adsorption on the metal sheet, thereby assisting the forward traction operation of the metal sheet. This achieves the use of variable multi-point adsorption to assist the traction movement of the metal sheet, effectively reducing the probability of slippage during traction movement and excessive deformation of the metal sheet, thus effectively ensuring the use effect and processing quality.

[0020] When the suction hole 63 in the adsorption state moves forward to the position where the outer conveyor belt 6 and the groove 651 are in contact with the inner wall, the inner conveyor belt 65 is in motion. At this time, the area of ​​the inner conveyor belt 65 that is in contact with the inner end of the suction hole 63 will move downward, thereby causing the corresponding area of ​​the inner conveyor belt 65 to tear apart from the opening of the inner end of the suction hole 63, so that the outside gas can enter the suction hole 63, thereby causing the negative pressure state in the suction hole 63 to disappear, thus releasing the adsorption state on the metal plate. At the same time, the suction hole 63 performs a recovery movement, thereby returning the cylindrical part 631 and other components to their original positions. This achieves an internal release operation of the adsorption state of the metal sheet, effectively reducing the probability of phenomena such as pull-down of the corresponding position of the metal sheet caused by the movement factors of the release adsorption state. It also effectively reduces the probability of errors in the forming size of the metal sheet during roll forming, effectively ensuring the use effect and processing quality.

[0021] Example 2: Figure 4 , Figure 9 and Figure 12As shown, two rectangular boxes 8 with their openings facing backwards are respectively attached to the top of the inner sides of the two outer conveyor belts 6, and the rectangular boxes 8 are located in front of and above the first roller 62. The rectangular boxes 8 provide a mounting carrier for components such as the connecting plate 83. Two fixing plates 82 are respectively installed on the left and right ends of the rectangular boxes 8, and the outward ends of the two fixing plates 82 are respectively connected to the inward ends of the two vertical parts of the second frame 5. The two fixing plates 82 work together to provide a mounting carrier for the rectangular boxes 8. Two connecting plates 83 extending from the rear side of the rectangular box 8 are slidably installed inside the two rectangular boxes 8. The connecting plates 83 provide a mounting carrier for components such as the separation plate 81. Two separation plates 81 with right-angled triangular cross sections are installed on the rear ends of the two connecting plates 83. The upper end face of the separation plate 81 is in contact with the inner top surface of the outer conveyor belt 6. The rear end of the separation plate 81 extends into the contact position between the outer conveyor belt 6 and the inner conveyor belt 65. The contact position between the outer conveyor belt 6 and the inner conveyor belt 65 is separated by the separation plate 81. The pressure strip 811, located directly below the suction hole 63 on the upper side, is installed on the lower end of the inclined surface of the separation plate 81. The lower end of the pressure strip 811 is connected to the upper front end of the inner conveyor belt 65 by mutual compression. Through the pressure strip 811, the adsorption space formed by the suction hole 63 and the inner conveyor belt 65 is compressed and degassed. Two pushers are installed in the two rectangular boxes 8 respectively, and the rear ends of the two pushers are connected to the front ends of the two connecting plates 83 respectively. Through the pushers, the connecting plates 83 are moved back and forth in a cyclical manner. The pushers can be electric push rods.

[0022] First, start the electric push rod to drive the connecting plate 83 to move back and forth in a circular motion, which in turn causes the separating plate 81 and the pressure strip 811 to move back and forth in a circular motion. When the separating plate 81 and the pressure strip 811 move backward, the separating plate 81 will insert into the position where the outer conveyor belt 6 and the groove 651 are in contact with the inner wall. At this time, the pressure strip 811 will press down on the corresponding area of ​​the inner wall of the groove 651, causing the corresponding area of ​​the inner wall of the groove 651 to sink and deform. Meanwhile, the inner conveyor belt 65 is in motion. At this time, the area of ​​the inner wall of the groove 651 that is in contact with the inner end of the suction hole 63 moves to the sinking position, so that the outside gas enters the suction hole 63, thereby eliminating the negative pressure state in the suction hole 63. Then, the area in the inner wall of the groove 651 that is in contact with the inner end of the suction hole 63 will move downward, thereby releasing the adsorption state on the metal sheet. At this time, the separating plate 81 will move forward back to its original position. In the same way as the above steps, the suction hole 63 in the adsorption state will be released in sequence, realizing the downward squeezing and degassing operation of the suction hole 63 in the adsorption state. This effectively reduces the probability of bulging and other phenomena in the corresponding position of the metal sheet caused by the tearing and degassing factor of the suction hole 63, and effectively ensures the use effect and processing quality.

[0023] Example 3: Figure 4 , Figure 9 , Figure 12 and Figure 13 As shown, two elastic elements 84 are symmetrically installed between the front wall of the rectangular box 8 and the front end of the connecting plate 83. The two elastic elements 84 work together to make the connecting plate 83 return to its original position. The elastic elements 84 can be springs. A magnetic plate 86 located between the two elastic elements 84 is placed on the front end of the connecting plate 83. An electromagnet 85 located between the two elastic elements 84 is installed on the front wall of the rectangular box 8, and the electromagnet 85 is directly in front of the magnetic plate 86. The electromagnet 85 and the magnetic plate 86 are arranged to repel each other. The electromagnet 85 and the magnetic plate 86 work together to make the connecting plate 83 move backward.

[0024] First, the circuit of electromagnet 85 is turned on. Since electromagnet 85 and magnetic plate 86 are arranged to repel each other, electromagnet 85 with the circuit turned on will generate a repulsive force with the corresponding magnetic plate 86. Under the action of the repulsive force, the connecting plate 83 will move backward, which will stretch the elastic element 84, so that the elastic element 84 generates an elastic force, and causes the separating plate 81 and the pressure strip 811 to move backward. Then, the separating plate 81 is inserted into the position where the outer conveyor belt 6 and the groove 651 are in contact with the inner wall. At this time, the pressure strip 811 will press down on the corresponding area of ​​the inner wall of the groove 651, so that the corresponding area of ​​the inner wall of the groove 651 will be deformed and sunken. Meanwhile, the inner conveyor belt 65 is in motion. At this time, the area of ​​the inner wall of the groove 651 that is in contact with the inner end of the suction hole 63 moves to the sunken position, so that the outside gas enters the suction hole 63, thereby eliminating the negative pressure state in the suction hole 63. Then, the area in the inner wall of the groove 651 that is in contact with the inner end of the suction hole 63 will move downward, thereby releasing the adsorption state of the metal plate. Then, the circuit of the electromagnet 85 is disconnected, thereby eliminating the repulsive force between the electromagnet 85 and the magnetic plate 86. Under the action of the elastic force of the elastic element 84, the connecting plate 83, the separating plate 81, and the pressure strip 811 move forward and return to their original positions. The same steps as above are used to sequentially and continuously release the adsorption state of the suction hole 63. When the outer conveyor belt 6 and the groove 651 adhere to each other during their separation movement towards the inner wall, it hinders the backward movement of the separation plate 81 and causes relative movement between the separation plate 81 and the rectangular box 8. This increases the repulsive force between the electromagnet 85 and the magnetic plate 86, thereby cutting away the adhesion and achieving a flexible connection between the separation plate 81 and the rectangular box 8. This assists in separating the outer conveyor belt 6 from the groove 651 towards the inner wall, effectively reducing the probability of the outer conveyor belt 6 arching and other phenomena, effectively reducing the probability of scratches on the metal sheet, and effectively ensuring the performance and processing quality.

[0025] Example 4: Figure 14As shown, multiple convex spheres 541 are equidistantly installed on the inner wall of the annular groove 54, and the multiple convex spheres 541 located on the rear side are all pressed against the inner wall of the inner conveyor belt 65, and the convex spheres 541 are located directly inside the corresponding suction hole 63.

[0026] When the suction hole 63 on the lower side of the outer conveyor belt 6 moves to the lower side of the second roller 64, the inner end of the corresponding suction hole 63 fits against the inner wall of the groove 651, thereby sealing the inner end opening of the suction hole 63. At this time, the lower roller 52 is rotating, which causes multiple convex balls 541 to rotate. The corresponding convex balls 541 will make a squeezing contact with the inner conveyor belt 65, so that the corresponding local bulge in the outer end of the inner conveyor belt 65 extends into the corresponding suction hole 63, thereby sealing the inner end opening of the suction hole 63 by bulging. Then the blocked suction hole 63 continues to move. When the blocked suction hole 63 moves from the bottom to the top, the forward-moving metal plate will cause the corresponding position on the outer conveyor belt 6 to sink and deform. The moving metal plate will gradually cover the outward opening of the upward-moving suction hole 63, thereby venting some of the gas inside the suction hole 63. When the sealed suction hole 63 has moved completely to the top, the moving metal plate will completely seal the outward opening of the suction hole 63. At this time, a negative pressure is formed in the space inside the suction hole 63, and the metal plate will be adsorbed under the assistance of the negative pressure. At this time, the corresponding convex ball 541 will separate from the inner conveyor belt 65, thereby allowing the corresponding local bulge in the outer end of the inner conveyor belt 65 to resume movement, further increasing the space inside the corresponding suction hole 63. This increases the negative pressure of the suction hole 63, ensuring the sealing effect of the inner wall of the groove 651 on the suction hole 63 on the one hand, and ensuring the adsorption of the metal sheet by the suction hole 63 on the other hand. It realizes the bulging sealing of the opening at the inner end of the suction hole 63 by the convex ball 541, effectively reducing the probability of leakage in the suction hole 63 during the adsorption operation, effectively ensuring the traction effect on the metal sheet, and thus ensuring the processing effect and processing quality.

[0027] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A roll forming apparatus for automotive workpieces, characterized in that, include: The base (1) has a rectangular structure; Two traction components are provided, and the two traction components are symmetrically installed on the upper end of the base (1); Roll forming parts, wherein multiple roll forming parts are provided, and multiple roll forming parts are equidistantly installed on the upper end of the base (1), and multiple roll forming parts are located between two traction parts; A driving component is installed on the upper end of the base (1), and the driving component is connected to two traction components and multiple roll forming components respectively; A guide is provided on the upper end of the base (1), and the front end of the guide is connected to the rear end of the traction member located on the rear side.

2. The roll forming apparatus for processing automotive workpieces according to claim 1, characterized in that: The roll forming part includes a first frame (2), which is mounted on the upper end of the base (1) and has a U-shaped structure. The upper roll (22) and the lower roll (23) are rotatably connected between the two vertical parts of the first frame (2), and the upper roll (22) is located directly above the lower roll (23).

3. The roll forming apparatus for processing automotive workpieces according to claim 2, characterized in that: The traction component includes a second frame (5), which is located on the upper end of the base (1) and is located on the outer side of the first frame (2). The second frame (5) has a U-shaped structure and the vertical part of the second frame (5) is arranged in a T-shape. The two vertical parts of the second frame (5) are rotatably connected to an upper roller (51) and a lower roller (52). The upper roller (51) is located directly above the lower roller (52). The annular end of the lower roller (52) is recessed inward to form an annular groove (54). An auxiliary structure is fitted inside the annular groove (54).

4. The roll forming apparatus for processing automotive workpieces according to claim 3, characterized in that: The auxiliary structure includes an outer conveyor belt (6), a first roller (62), a second roller (64), and an inner conveyor belt (65). The first roller (62) and the second roller (64) are rotatably connected between two vertical parts of the second frame (5), and the first roller (62) is located directly in front of the second roller (64). The inner conveyor belt (65) is fitted into an annular groove (54), and the annular wall inside the annular groove (54) meshes with the rear wall inside the inner conveyor belt (65). The annular end of the second roller (64) meshes with the front wall inside the inner conveyor belt (65), and the inner conveyor belt (65) is located behind the first roller (62). The outer end of the inner conveyor belt (65) is recessed inward to form a groove (651). The outer conveyor belt (6) is fitted inside the groove (651). The annular end of the first roller (62) meshes with the inner front wall of the outer conveyor belt (6). The middle part of the outer end face of the outer conveyor belt (6) is recessed inward to form multiple suction holes (63), and the suction holes (63) penetrate the outer conveyor belt (6). A separation component is attached to the top of the inner part of the outer conveyor belt (6), and the separation component is located in front of and above the first roller (62). The separation component is set between two vertical parts of the second frame (5), and the rear end of the separation component extends into the mutual contact position between the outer conveyor belt (6) and the inner conveyor belt (65). An expansion component is installed in each of the multiple suction holes (63).

5. The roll forming apparatus for processing automotive workpieces according to claim 4, characterized in that: The separation component includes a rectangular box (8), which is attached to the top of the inner side of the outer conveyor belt (6), with the opening of the rectangular box (8) facing backward. Fixing plates (82) are installed on both the left and right ends of the rectangular box (8), and the rectangular box (8) is located in front of and above the first roller (62). The two fixing plates (82) are respectively connected to the two vertical parts of the second frame (5) with their outward ends facing inward. A connecting plate (83) is slidably disposed inside the rectangular box (8), and the connecting plate (83) extends out of the rear side of the rectangular box (8). A separation plate (81) is installed at the rear end of the connecting plate (83). The cross-section of the separation plate (81) is a right triangle, and the upper surface of the separation plate (81) is in contact with the inner top surface of the outer conveyor belt (6). A pressure strip (811) is installed at the lower end of the inclined surface of the separation plate (81), and the pressure strip (811) is located directly below the suction hole (63) on the upper side. A pusher is installed inside the rectangular box (8), and the rear end of the pusher is connected to the front end of the connecting plate (83).

6. The roll forming apparatus for processing automotive workpieces according to claim 5, characterized in that: The actuator includes an electromagnet (85), a magnetic plate (86), and two elastic elements (84). The two elastic elements (84) are symmetrically installed between the front wall of the rectangular box (8) and the front end of the connecting plate (83). The front end of the connecting plate (83) is provided with the magnetic plate (86), and the magnetic plate (86) is located between the two elastic elements (84). The front wall of the rectangular box (8) is equipped with an electromagnet (85), and the electromagnet (85) is located between the two elastic elements (84). The electromagnet (85) is located directly in front of the magnetic plate (86), and the electromagnet (85) and the magnetic plate (86) are arranged to repel each other.

7. The roll forming apparatus for processing automotive workpieces according to claim 4, characterized in that: The driving component includes a driving device, which is installed at the upper front end of the base (1) and located on the right side of the second frame (5). A second gear (71) is provided at the front end of the output shaft of the driving device. A worm (3) is installed on the left side of the second gear (71). The worm (3) is rotatably connected to the right ends of the two second frames (5) and the right ends of the multiple first frames (2) through bearing seats. A first gear (31) is installed on the annular end of the worm (3), and the first gear (31) and the second gear (71) are connected by a synchronous belt. The shaft of the first roller (62) and the shaft of the lower roller (52) both extend out of the right side of the second frame (5). The right ends of the shafts of the two first rollers (62) are equipped with third worm gears (61), and the third worm gears (61) mesh with the lower end of the worm (3). The right ends of the shafts of the two lower rollers (52) are equipped with second worm gears (53), and the second worm gears (53) mesh with the lower end of the worm (3). The shaft of the lower roller pressure roller (23) extends out of the right side of the first frame (2). The right ends of the shafts of the multiple lower roller pressure rollers (23) are equipped with first worm gears (21), and the first worm gears (21) mesh with the lower end of the worm (3).

8. The roll forming apparatus for processing automotive workpieces according to claim 3, characterized in that: The guide includes two mounting plates (4), the mounting plates (4) have a T-shaped cross section, the vertical parts of the two mounting plates (4) are symmetrically mounted on the upper end of the base (1), and the front ends of the vertical parts of the two mounting plates (4) are respectively connected to the rear ends of the two vertical parts of the second frame (5) located on the rear side. Multiple material support rollers (41) are equidistantly rotatably connected between the two mounting plates (4). The multiple material support rollers (41) located between the horizontal parts of the two mounting plates (4) are arranged in an arc structure, and the multiple material support rollers (41) located between the vertical parts of the two mounting plates (4) are arranged in a straight line. Two round rods (44) are symmetrically installed between the vertical parts of the two mounting plates (4). Two limiting plates (42) are symmetrically arranged between the vertical parts of the two mounting plates (4). The lower end of the limiting plate (42) is attached to the round rod (44). Two guide cylinders (45) are symmetrically installed on the upper end of the limiting plate (42). The two guide cylinders (45) are slidably arranged on the outer ends of the two round rods (44). The two limiting plates (42) are rotatably connected to the adjusting screws (43) at their outer ends. The two adjusting screws (43) pass through the two mounting plates (4) respectively. The adjusting screws (43) are threadedly connected to the mounting plates (4).

9. The roll forming apparatus for processing automotive workpieces according to claim 4, characterized in that: The expansion assembly includes a cylinder (631), which is movably installed inside the suction hole (63) and extends outward from the suction hole (63). A rubber pad (632) is provided at the outward end of the cylinder (631). Multiple support arms (633) are equidistantly arranged at the inner annular end of the cylinder (631), and the multiple support arms (633) are arranged in a conical structure that is narrow on the outside and wide on the inside. A hemisphere (634) is movably installed at the other end of each of the multiple support arms (633), and the multiple hemispheres (634) are equidistantly embedded on the annular inner wall of the suction hole (631).

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