Cutting device for automotive sheet

Abstract

This invention discloses a cutting device for automotive sheet metal, relating to the field of sheet metal cutting technology. It includes an equipment bracket, conveying rollers, and a cutting power unit. Multiple conveying rollers are rotatably connected to the surface of the equipment bracket. A support frame is fixedly connected to the surface of the equipment bracket. The cutting power unit is mounted on the surface of the support frame. A milling cutter head is fixedly connected to the power output shaft of the cutting power unit. A power transmission assembly is provided inside the side of the equipment bracket, used to simultaneously drive multiple conveying rollers to rotate in the same direction. A surface treatment mechanism is disposed on the surface of the cutting power unit. The surface treatment mechanism includes two connecting frames fixedly connected to the surface of the cutting power unit. A movable cover plate is fixedly connected to the bottom end of the two connecting frames to solve the problem of the sheared layer being torn or broken under the tearing of the milling cutter head, forming irregular residual metal.

Description

Technical Field

[0001] This invention relates to the field of sheet metal cutting technology, and more specifically, to a cutting device for automotive sheet metal. Background Technology

[0002] Automotive sheet metal cutting devices are specialized cutting equipment used for blanking and forming sheet metal parts such as automotive steel sheets, aluminum sheets, and high-strength steel. These devices use high-speed rotating cutting tools to machine the sheet metal, and with the aid of a cooling system, achieve one-time processing. They are commonly used for blanking and pre-forming holes and grooves in parts such as body panels, chassis brackets, and door frames. They offer advantages such as no need for molds, high dimensional accuracy, fast changeover, and suitability for small-batch, multi-variety production.

[0003] When processing automotive sheet metal, a high-speed rotating milling cutter is used to machine its surface. Upon contact with the sheet metal surface, the contact area is removed. However, during this process, the material is not completely severed at the moment of milling; instead, it is torn or pulled apart by the milling cutter, leaving irregular residual metal. This residual metal can affect installation accuracy during subsequent assembly. Adding a process to remove this residual metal would reduce processing efficiency and increase costs. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a cutting device for automotive sheet metal to solve the problem that the sheared layer is torn or broken under the tearing of the milling cutter head, forming irregular residual metal.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A cutting device for automotive sheet metal includes an equipment bracket, conveying rollers, and a cutting power unit. Multiple conveying rollers are rotatably connected to the surface of the equipment bracket. A support frame is fixedly connected to the surface of the equipment bracket. The cutting power unit is mounted on the surface of the support frame. A milling cutter head is fixedly connected to the power output shaft of the cutting power unit. A power transmission assembly is disposed inside the side of the equipment bracket, used to simultaneously drive multiple conveying rollers to rotate in the same direction. A surface treatment mechanism is disposed on the surface of the cutting power unit. The surface treatment mechanism includes two connecting frames fixedly connected to the surface of the cutting power unit. A movable cover plate is fixedly connected to the bottom end of the two connecting frames. A transverse removal cutter head is rotatably connected to the front end of the movable cover plate. Inner side plates are fixedly connected to both sides of the lower surface of the movable cover plate, and a longitudinal removal cutter head is rotatably connected to the front end of the inner side plate.

[0007] Furthermore, both the movable cover plate and the inner side plate are equipped with arc-shaped push strips. One end of the arc-shaped push strip located inside the movable cover plate and the inner side plate is fixedly connected to a rubber push seat. Both the movable cover plate and the inner side plate are equipped with push springs, and the push springs are fixedly connected to the surface of the rubber push seats.

[0008] Furthermore, a guide discharge channel is inserted inside the movable cover plate, and the side cross-sectional shape of the guide discharge channel is arc-shaped.

[0009] Furthermore, the guide discharge channel gradually narrows in width from the front end to the rear end, and the width of the rear end of the guide discharge channel is the same as the diameter of the milling cutter head.

[0010] Furthermore, drive rollers are rotatably inserted into the interior of both sides of the guide discharge channel. The four drive rollers are grouped in pairs, and the two drive rollers are connected by a debris conveyor belt. Drive wheels are fixedly connected to the ends of the two drive rollers located at the front end of the guide discharge channel that are far apart from each other. The debris conveyor belt is made of elastic rubber, and the two debris conveyor belts are respectively inclined and fitted to the two sides inside the guide discharge channel.

[0011] Furthermore, angle holding rollers are fixedly connected between the two drive rollers at the front end of the guide discharge channel and the two drive rollers at the rear end of the guide discharge channel.

[0012] Furthermore, a connecting strip is fixedly connected to the rear end of the movable cover, and a guide protective plate is rotatably connected to the surface of the connecting strip. An angle support plate is fixedly connected to the rear end of the movable cover, and the rear end cross-sectional shape of the guide protective plate is arc-shaped.

[0013] Furthermore, a conveying and holding mechanism is provided, which is disposed on both sides of the equipment support. The conveying and holding mechanism includes multiple suspension brackets fixedly connected to both sides of the equipment support. A connecting bracket is fixedly connected to the surface of the suspension bracket. A central shaft is rotatably connected to the long arm end of the connecting bracket. A supporting airbag is fixedly sleeved on the surface of the central shaft. An air delivery pipe is connected to the lower surface of the supporting airbag. An air pump is fixedly connected to the longitudinal arm end of the suspension bracket. The air outlet of the air pump is rotatably connected to the air delivery pipe through a rotary joint.

[0014] Furthermore, the airbag is equipped with an air pressure monitoring component, which is electrically connected to the air pump via a controller.

[0015] Furthermore, a cover plate is fixedly connected to the upper end of the central shaft, and a connecting ring is fixedly connected to the lower surface of the cover plate. Multiple dense support plates are inserted inside the connecting ring, and thick-walled rubber sleeves are fitted onto the surfaces of the multiple dense support plates.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) When milling the plate, the residual metal at the corner of the groove can be removed by the transverse and longitudinal removal cutters as the plate continues to move, so as to prevent the residual metal from affecting the installation accuracy during subsequent installation and splicing.

[0018] (2) This solution uses a push spring to apply a rotational thrust to the tail of the longitudinal and transverse removal cutters, so that the longitudinal and transverse removal cutters are always in contact with the plate, preventing the longitudinal and transverse removal cutters from wearing out and failing to fit with the plate, resulting in incomplete removal. This further improves the removal effect of residual metal and prevents residual metal from affecting the subsequent installation and splicing accuracy.

[0019] (3) In this scheme, the residual metal falls into the groove, which can prevent the residual metal from contacting the outer surface of the plate and causing scratches on the outer surface of the plate, thus affecting the appearance and quality of the finished product. The residual metal is pressed and transported by the debris conveyor belt to ensure that the residual metal passes through the guide discharge channel into the groove, thereby further improving the appearance and quality of the finished product.

[0020] (4) This solution can prevent metal debris from flying upwards at an angle and causing danger by using a guide guard plate, and prevent metal debris from falling onto the upper surface of the board and causing scratches on the board, thus affecting the appearance and quality of the finished product and further improving the appearance and quality of the finished product.

[0021] (5) By making the thick-walled rubber sleeve tightly attached to the side wall of the plate, this solution can restrict the movement trajectory of the plate during the movement of the plate, so that the plate can maintain a stable straight movement. Furthermore, after the thick-walled rubber sleeve wears down and the air pressure inside the airbag decreases, the air pump delivers air into the support airbag to maintain a stable air pressure inside the support airbag, so that the thick-walled rubber sleeve always fits against the side wall of the plate. This prevents the plate from not fitting against the side wall of the plate after wear, which would cause fluctuations in the movement path of the plate and make the inner wall of the groove appear wavy after processing, thereby improving the processing quality of the plate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the cutting power unit of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the guide emission channel portion of the present invention;

[0025] Figure 4This is a schematic diagram of the structure of the guide and protective plate portion of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the movable cover plate of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the inner side plate of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the debris conveyor belt part of the present invention;

[0029] Figure 8 This is a schematic diagram of the conveying and holding mechanism of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the lower surface of the cover plate of the present invention.

[0031] Explanation of the labels in the diagram:

[0032] 1. Equipment bracket; 2. Conveyor roller; 3. Support frame; 4. Cutting power unit; 5. Milling cutter head;

[0033] 601. Moving cover plate; 602. Transverse rejection cutter head; 603. Connecting frame; 604. Drive wheel; 605. Transmission roller; 606. Guide guard plate; 607. Connecting strip; 608. Guide discharge channel; 609. Debris conveyor belt; 610. Longitudinal rejection cutter head; 611. Internal side plate; 612. Angle support plate; 613. Push spring; 614. Rubber push seat; 615. Arc push strip; 616. Angle holding roller;

[0034] 701. Connecting bracket; 702. Cover plate; 703. Central shaft; 704. Suspension bracket; 705. Air pump; 706. Thick-walled rubber sleeve; 707. Dense support plate; 708. Connecting ring; 709. Air delivery pipe; 710. Rotary joint; 711. Support airbag. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-7A cutting device for automotive sheet metal includes a support frame 1, conveying rollers 2, and a cutting power unit 4. Multiple conveying rollers 2 are rotatably connected to the surface of the support frame 1. A support frame 3 is fixedly connected to the surface of the support frame 1. The cutting power unit 4 is mounted to the surface of the support frame 3. A milling cutter head 5 is fixedly connected to the power output shaft of the cutting power unit 4. A power transmission assembly is provided inside the side of the support frame 1, which simultaneously drives multiple conveying rollers 2 to rotate in the same direction. A surface treatment mechanism is also included. The surface treatment mechanism of the force unit 4 includes two connecting brackets 603 fixedly connected to the surface of the cutting power unit 4. The bottom ends of the two connecting brackets 603 are fixedly connected to a movable cover plate 601. The front end of the movable cover plate 601 is rotatably connected to a transverse removal cutter head 602. Both sides of the lower surface of the movable cover plate 601 are fixedly connected to an inner side plate 611. The front end of the inner side plate 611 is rotatably connected to a longitudinal removal cutter head 610. The residual metal at the chamfer position on the groove can be removed by the transverse removal cutter head 602 and the longitudinal removal cutter head 610.

[0037] The movable cover plate 601 and the inner side plate 611 are both equipped with arc-shaped push bars 615. One end of the arc-shaped push bar 615 inside the movable cover plate 601 and the inner side plate 611 is fixedly connected to a rubber push seat 614. The rubber push seat 614 can bend during the process of pushing the arc-shaped push bar 615 into the movable cover plate 601 and the inner side plate 611, thereby increasing the movement of the arc-shaped push bar 615. The movable cover plate 601 and the inner side plate 611 are both equipped with push springs 613, which can apply a pushing force to the arc-shaped push bar 615. The push springs 613 are fixedly connected to the surface of the rubber push seat 614.

[0038] The movable cover plate 601 is internally fitted with a guide discharge channel 608. The guide discharge channel 608 has an arc-shaped side cross-section and its width gradually narrows from the front end to the rear end. The width of the rear end of the guide discharge channel 608 is the same as the diameter of the milling cutter head 5. The guide discharge channel 608 has a drive roller 605 rotatably inserted inside both ends of its sides. The four drive rollers 605 are arranged in pairs, and the two drive rollers 605 are connected by a chip conveyor belt 609. The two drive rollers 605 at the front end of the guide discharge channel 608 are fixedly connected to the ends of the two drive rollers 605 that are far apart from each other. The chip conveyor belt 609 is made of elastic rubber and is inclined and fitted to both sides of the inside of the guide discharge channel 608. Angle holding rollers 616 are fixedly connected between the two drive rollers 605 at the front end of the guide discharge channel 608 and the two drive rollers 605 at the rear end of the guide discharge channel 608.

[0039] The movable cover plate 601 is fixedly connected to a connecting strip 607 at its rear end. A guide guard plate 606 is rotatably connected to the surface of the connecting strip 607. The guide guard plate 606 can prevent metal debris from flying obliquely upwards and causing danger, and prevent metal debris from falling onto the upper surface of the plate and scratching the plate, thus affecting the appearance and quality of the finished product. An angle support plate 612 is fixedly connected to the rear end of the movable cover plate 601. The rear end cross-section of the guide guard plate 606 is arc-shaped to avoid metal debris directly impacting and causing irregular splashing, which would reduce the effectiveness of the guide guard plate 606.

[0040] By adopting the above technical solution, when cutting the sheet metal, the sheet metal is placed on multiple conveyor rollers 2, and then the power transmission assembly drives the multiple conveyor rollers 2 to rotate synchronously in the same direction, thus moving the sheet metal. When the sheet metal moves to below the cutting power unit 4, the cutting power unit 4 drives the milling cutter head 5 to rotate at high speed. At this time, the sheet metal comes into contact with the high-speed rotating milling cutter head 5, and the contact area of ​​the sheet metal can be removed by the milling cutter head 5. During the milling process, two longitudinal removal cutter heads 610 are attached to the two inner sidewalls of the groove cut on the sheet metal, and a transverse removal cutter head 602 is attached to the upper surface of the groove cut on the sheet metal. As the sheet metal continues to move, the transverse removal cutter head 602 and the longitudinal removal cutter head 610 can remove the residual metal at the cut corner position on the groove, preventing residual metal from affecting the installation accuracy during subsequent installation and splicing. By pushing the spring 613, a thrust can be applied to the arc-shaped push bar 615, causing the arc-shaped push bar 615 to apply a rotational thrust to the tails of the longitudinal removal cutter head 610 and the transverse removal cutter head 602. This ensures that the longitudinal removal cutter head 610 and the transverse removal cutter head 602 are always in contact with the plate, preventing the longitudinal removal cutter head 610 and the transverse removal cutter head 602 from wearing out and failing to fit with the plate, resulting in incomplete removal and affecting the removal effect of residual metal. This, in turn, affects the installation accuracy of residual metal during subsequent installation and splicing processes.

[0041] After the longitudinal removal head 610 removes the residual metal, the removed residual metal falls directly into the groove, preventing it from contacting the outer surface of the sheet and causing scratches that could affect the finished product's appearance. Since the groove is a connecting part and not exposed, scratches will not affect the finished product's appearance. After the transverse removal head 602 removes the residual metal, the strip-shaped residual metal enters the guide discharge channel 608. Guided by the discharge channel, it then enters the groove on the sheet, further reducing the chance of residual metal contacting the outer surface and causing scratches, thus improving the finished product's appearance. Because the drive wheel 604 is in close contact with the upper surface of the sheet, during the sheet's movement, the drive wheel 604 rotates and drives the transmission roller 605 to rotate. When the residual metal enters the guide discharge channel 608, the debris conveyor belt 609 presses down the residual metal and transports it, ensuring that the residual metal can pass through the guide discharge channel 608 and enter the groove.

[0042] Because the milling cutter head 5 needs to rotate at high speed during the processing of the sheet metal, the high-speed rotation of the milling cutter head 5 will cause a large amount of metal chips to fly out. The guide guard plate 606 can prevent the metal chips from flying obliquely upwards and causing danger, and prevent the metal chips from falling onto the upper surface of the sheet metal and causing scratches, which would affect the appearance and quality of the finished product. The arc-shaped guide guard plate 606 at the rear end can prevent the metal chips from directly impacting and causing irregular splashing, thus reducing the effectiveness of the guide guard plate 606. When metal chips become stuck in the groove, as the sheet metal continues to move, the guide guard plate 606 rotates upwards due to compression to pass over the stuck metal chips, preventing it from carrying a large amount of metal chips and moving synchronously, which would cause blockage and lead to severe wear of the milling cutter head 5.

[0043] like Figures 8-9As shown, a conveying and holding mechanism is disposed on both sides of the equipment support 1. The conveying and holding mechanism includes multiple suspension brackets 704 fixedly connected to both sides of the equipment support 1. A connecting bracket 701 is fixedly connected to the surface of the suspension bracket 704. A central shaft 703 is rotatably connected to the long arm end of the connecting bracket 701. A support airbag 711 is fixedly sleeved on the surface of the central shaft 703. The support airbag 711 expands and unfolds, allowing the thick-walled rubber sleeve 706 to fit tightly against the side wall of the plate. An air delivery pipe 709 is connected to the lower surface of the support airbag 711. An air pump 705 is fixedly connected to the longitudinal arm end of the suspension bracket 704. Air is injected into the support airbag 711 by the air pump 705, allowing the support airbag to expand. 711 expands and unfolds. The air outlet of the air pump 705 is rotatably connected to the air delivery pipe 709 via a rotary joint 710. An air pressure monitoring component is installed inside the support airbag 711. The air pressure monitoring component is electrically connected to the air pump 705 via a controller. When the air pressure monitoring component inside the airbag detects a decrease in air pressure, it controls the air pump 705 to deliver air into the support airbag 711 to maintain stable air pressure inside the support airbag 711. A cover plate 702 is fixedly connected to the upper end of the central shaft 703. A connecting ring 708 is fixedly connected to the lower surface of the cover plate 702. Multiple dense support plates 707 are inserted inside the connecting ring 708. Thick-walled rubber sleeves 706 are fitted onto the surfaces of the multiple dense support plates 707.

[0044] By adopting the above technical solution, air is injected into the support airbag 711 by the air pump 705 during the movement of the sheet metal. This causes the support airbag 711 to expand and unfold, thereby pushing the multiple densely arranged support plates 707 outwards and expanding the thick-walled rubber sleeve 706. This allows the thick-walled rubber sleeve 706 to adhere tightly to the side wall of the sheet metal, restricting the movement trajectory of the sheet metal during movement and enabling it to maintain stable linear movement. As the thick-walled rubber sleeve 706 rolls against the side wall of the sheet metal for a long time, it will wear down and thin, thus reducing the air pressure inside the airbag. When the air pressure monitoring component inside the airbag detects the decrease in air pressure, it controls the air pump 705 to supply air into the support airbag 711 to maintain stable air pressure inside the support airbag 711. This ensures that the thick-walled rubber sleeve 706 always adheres to the side wall of the sheet metal, preventing the sheet metal from moving along the side wall after wear and causing fluctuations in the movement path, resulting in a wavy inner wall after groove processing and affecting the processing quality of the sheet metal.

[0045] Instructions for use: First, place the sheet material on multiple conveyor rollers 2;

[0046] Next, the power transmission assembly drives multiple conveyor rollers 2 to rotate synchronously in the same direction;

[0047] Subsequently, the sheet metal comes into contact with the high-speed rotating milling cutter head 5, and the contact area of ​​the sheet metal is removed by the milling cutter head 5;

[0048] Next, the sheet continues to move, and the transverse removal head 602 and the longitudinal removal head 610 remove the residual metal at the corner of the groove;

[0049] At the same time, the push spring 613 causes the arc push bar 615 to apply a rotational thrust to the tail of the longitudinal removal cutter head 610 and the transverse removal cutter head 602;

[0050] Finally, the remaining metal after removal falls directly into the groove;

[0051] Meanwhile, the debris conveyor belt 609 transports the residual metal, which passes through the guide discharge channel 608 and enters the groove.

[0052] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A cutting device for automotive sheet metal, comprising a device bracket (1), conveying rollers (2), and a cutting power unit (4), wherein multiple conveying rollers (2) are rotatably connected to the surface of the device bracket (1), a support frame (3) is fixedly connected to the surface of the device bracket (1), the cutting power unit (4) is mounted on the surface of the support frame (3), a milling cutter head (5) is fixedly connected to the power output shaft of the cutting power unit (4), and a power transmission assembly is provided inside the side of the device bracket (1), the power transmission assembly being used to simultaneously drive multiple conveying rollers (2) to rotate in the same direction, characterized in that: A surface treatment mechanism is provided on the surface of the cutting power unit (4). The surface treatment mechanism includes two connecting frames (603) fixedly connected to the surface of the cutting power unit (4). A movable cover plate (601) is fixedly connected to the bottom end of the two connecting frames (603). A transverse removal cutter head (602) is rotatably connected to the front end of the movable cover plate (601). An inner side plate (611) is fixedly connected to both sides of the lower surface of the movable cover plate (601). A longitudinal removal cutter head (610) is rotatably connected to the front end of the inner side plate (611).

2. The cutting device for an automobile sheet material according to claim 1, characterized by: Both the movable cover plate (601) and the inner side plate (611) are equipped with arc-shaped push strips (615). One end of the arc-shaped push strip (615) located inside the movable cover plate (601) and the inner side plate (611) is fixedly connected to a rubber push seat (614). Both the movable cover plate (601) and the inner side plate (611) are equipped with push springs (613). The push springs (613) are fixedly connected to the surface of the rubber push seat (614).

3. The cutting device for an automobile sheet material according to claim 1, characterized by: The movable cover plate (601) is provided with a guide discharge channel (608) inside, and the side cross-section of the guide discharge channel (608) is arc-shaped.

4. A cutting device for automotive sheet metal according to claim 3, characterized in that: The guide discharge channel (608) gradually narrows from the front end to the rear end, and the width of the rear end of the guide discharge channel (608) is the same as the diameter of the milling cutter head (5).

5. The cutting device for an automobile sheet material according to claim 3, characterized in that: The guide discharge channel (608) has drive rollers (605) rotatably inserted inside both sides. The four drive rollers (605) are in pairs. The two drive rollers (605) are connected by a chip conveyor belt (609). The two drive rollers (605) at the front end of the guide discharge channel (608) are fixedly connected to drive wheels (604) at the ends that are far apart from each other. The chip conveyor belt (609) is made of elastic rubber. The two chip conveyor belts (609) are respectively inclined and attached to the two sides inside the guide discharge channel (608).

6. The cutting device for an automobile sheet material according to claim 5, wherein: An angle holding roller (616) is fixedly connected between the two drive rollers (605) at the front end of the guide discharge channel (608) and the two drive rollers (605) at the rear end of the guide discharge channel (608).

7. The cutting device for an automobile sheet material according to claim 1, characterized by: The rear end of the movable cover plate (601) is fixedly connected to a connecting strip (607), and a guide protection plate (606) is rotatably connected to the surface of the connecting strip (607). The rear end of the movable cover plate (601) is fixedly connected to an angle support plate (612), and the rear end cross-sectional shape of the guide protection plate (606) is arc-shaped.

8. The cutting device for an automobile panel according to claim 1, characterized by: The conveying and holding mechanism is disposed on both sides of the equipment support (1). The conveying and holding mechanism includes multiple suspension brackets (704) fixedly connected to both sides of the equipment support (1). A connecting bracket (701) is fixedly connected to the surface of the suspension bracket (704). A central shaft (703) is rotatably connected to the long arm end of the connecting bracket (701). A support airbag (711) is fixedly sleeved on the surface of the central shaft (703). An air delivery pipe (709) is connected to the lower surface of the support airbag (711). An air pump (705) is fixedly connected to the longitudinal arm end of the suspension bracket (704). The air outlet of the air pump (705) is rotatably connected to the air delivery pipe (709) through a rotary joint (710).

9. The cutting device for an automobile panel according to claim 8, wherein: The airbag (711) is equipped with an air pressure monitoring component, which is electrically connected to the air pump (705) via a controller.

10. The cutting device for an automobile panel according to claim 8, characterized by: The upper end of the central shaft (703) is fixedly connected to a cover plate (702), and the lower surface of the cover plate (702) is fixedly connected to a connecting ring (708). Multiple dense support plates (707) are inserted inside the connecting ring (708), and thick-walled rubber sleeves (706) are fitted on the surface of the multiple dense support plates (707).

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