Motor home accessory bending forming device

Abstract

The invention relates to the technical field of bending forming, in particular to a motor home accessory bending forming device which comprises a working platform, a rectangular cover plate installed at the upper end of the working platform and a conveying unit arranged between the working platform and the rectangular cover plate. The conveying unit comprises a feeding mechanism used for pushing and feeding a material plate and a discharging mechanism used for pushing and discharging a bent finished product, a bearing mechanism used for bearing the material plate before and after bending is arranged on the working platform, and the bending forming device further comprises a first-stage bending mechanism and a continuous bending mechanism. When the first-stage bending mechanism moves downwards, the first-stage bending mechanism is matched with the second-stage bending part to conduct second-time bending on the part, located on the containing groove, of the material plate, and when the first-stage bending mechanism moves upwards, the first-stage bending mechanism is matched with the third-stage bending part to complete third-time bending work, so that the material plate is changed into a [-shaped structure; in the whole bending process, three times of continuous bending of the material plate can be completed only by one-time reciprocating lifting of the hydraulic push rod, the automation degree is high, the pressure maintaining time of first-time bending and second-time bending is long, and the finished product quality is better.

Description

Technical Field

[0001] The invention relates to the technical field of bending and forming, and in particular to a bending and forming device for a motorhome accessory. Background Art

[0002] RV accessories refer to various equipment and components used in RVs, among which the connectors connecting the suspension components and the chassis include concave-shaped metal connectors. Bending and shaping of metal connectors is a common process in the field of metal processing. It is mainly used to bend and shape metal materials such as steel plates and aluminum alloys to form the required connector shape. In particular, when manufacturing concave-shaped metal connectors, bending is often required to meet the design requirements. Bending and shaping not only requires the shape of the metal connector to be precise, but also requires efficient and reliable performance during the production process.

[0003] At present, when bending concave metal connectors with inner flanges, multiple bending is required, resulting in low bending efficiency. Secondly, there is generally friction between the bent product and the mold when unloading, which not only slows down the unloading process but also causes wear on the product. Summary of the invention

[0004] Technical problem to be solved: The present invention provides a RV accessories bending and forming device, which can solve the above-mentioned problems.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution, a RV accessories bending and forming device, including a working platform, a rectangular cover plate installed on the upper end of the working platform, and a conveying unit jointly arranged between the two, the conveying unit includes a loading mechanism for pushing the material sheet to load and a unloading mechanism for pushing the bent finished product to unload, the loading mechanism includes a feed port opened on the lower side of the front end of the rectangular cover plate.

[0006] A supporting mechanism for supporting the material plate before and after bending is arranged on the working platform. The bending and forming device also includes a primary bending mechanism and a continuous bending mechanism. The supporting mechanism includes a receiving groove opened in the middle of the upper end of the working platform and a supporting plate slidably arranged in the receiving groove through two spring telescopic rods.

[0007] The primary bending mechanism includes a limit adjustment part and a pressure plate that moves up and down. The limit adjustment part includes a limit member that moves back and forth. The limit member includes a bidirectional spring telescopic rod installed on the upper end of the pressure plate and a rectangular support plate fixed on the front and rear telescopic ends of the bidirectional spring telescopic rod.

[0008] The continuous bending mechanism includes a three-stage bending part and two second-stage bending parts symmetrically arranged front and back. When the pressing plate descends, the material plate is pressed into the receiving groove to form a U-shaped structure, and during the descending process, it cooperates with the second-stage bending part to bend the part of the material plate located on the receiving groove into an L-shaped structure. When the pressing plate ascends, the supporting plate lifts the material plate upward and cooperates with the three-stage bending part to bend the part of the material plate located on the receiving groove into a C-shaped structure.

[0009] Preferably, the limit adjustment part further includes a driving part for driving the rectangular support plate to move back and forth. The driving part includes two left and right four-headed cams rotatably installed at the upper end of the pressing plate. The stroke on the front and back sides of the four-headed cam is smaller than the stroke on the left and right sides. The ends with the same stroke of the two left and right four-headed cams are simultaneously in contact with the front and back two rectangular support plates. The four-headed cams rotate synchronously and intermittently to push the rectangular support plates away from each other or close to each other.

[0010] Preferably, the first-stage bending mechanism includes two left and right hydraulic push rods fixed to the upper end of the rectangular cover plate. The telescopic ends of the hydraulic push rods are both installed with support columns. A support cross plate is fixedly sleeved on the upper sides of the two left and right support columns. The pressing plate is fixed to the lower ends of the two left and right support columns.

[0011] Preferably, the second-stage bending part includes return-shaped chutes opened on the inner walls of the left and right ends of the rectangular cover plate. A second support slide rod is slidably installed on the inner walls of the two left and right return-shaped chutes. Rectangular grooves are opened on the inner walls of the left and right ends of the rectangular cover plate and within the return-shaped chutes. The second-stage bending part further includes a C-shaped support slide plate fixedly sleeved on the outer wall of the second support slide rod. The front and back inner walls of the rectangular cover plate are respectively connected to the corresponding C-shaped support slide plates through two left and right spring telescopic rods. The lower end of the C-shaped support slide plate is slidably sleeved with a C-shaped sleeve plate through a plurality of compression springs. An elastic telescopic rod is hinged. The upper ends of the left and right sides of the support cross plate are respectively hinged with elastic telescopic rods. The telescopic ends of the two left and right elastic telescopic rods are rotatably sleeved on the second support slide rod.

[0012] Preferably, anti-reverse parts are commonly provided on the two left and right return-shaped chutes and the rectangular cover plate. The anti-reverse parts play an anti-reverse role in the sliding direction of the second support slide rod. The anti-reverse part includes an installation column rotatably penetrating and installed at the position corresponding to the rectangular groove on the outer wall of the rectangular cover plate. A plurality of limit rods evenly distributed in a circle are installed at one end of the installation column located in the rectangular groove. Inner ratchet rings are installed at one ends of the installation column located outside the rectangular cover plate. Installation arc grooves are symmetrically opened on the outer wall of the installation column corresponding to the inner ratchet rings. Pawls are hinged on the inner walls of the installation arc grooves through compression springs. The two pawls are arranged in opposite directions, and both pawls are intermittently engaged with the corresponding inner ratchet rings.

[0013] Preferably, the three - stage bending part includes an inverted T - shaped plate installed on the inner wall of the upper end of the rectangular cover plate. Bending top plates are installed at both the front and rear ends of the horizontal section of the inverted T - shaped plate. L - shaped baffles are symmetrically installed at the opposite ends of the two C - shaped sleeve plates I. The vertical section of the front L - shaped baffle is shorter than that of the rear L - shaped baffle. The lower end of the vertical section of the front L - shaped baffle is slidably sleeved with a C - shaped sleeve plate II through a plurality of compression springs. The front side of the lower end of the C - shaped sleeve plate II is a wedge - shaped structure.

[0014] Preferably, the blanking mechanism includes rectangular installation grooves II opened on both the front and rear sides of the upper end of the working platform and located on both sides of the receiving groove. Slide rails are installed in the two rectangular installation grooves II. Electric sliders are installed on the slide rails. Pushing plates are installed at the upper ends of the electric sliders. The two pushing plates are symmetrically arranged.

[0015] Preferably, the feeding mechanism further includes conveying rollers and baffle plates. Two baffle plates are installed on the inner walls of the front and rear ends of the rectangular cover plate. The baffle plates are located at the left and right ends of the feeding port. A rectangular installation groove I is opened on the front side of the upper end of the working platform. A plurality of conveying rollers are rotatably installed in the rectangular installation groove I. The left ends of the plurality of conveying rollers all rotatably penetrate through the working platform, and the left ends of the plurality of conveying rollers are传动连接通过链轮链条传动连接。

[0016] Preferably, rolling groups are arranged at the opposite ends of the two rectangular support plates. The rolling group includes a plurality of receiving chutes evenly opened on the rectangular support plate from left to right. Installation sliding plates are slidably connected in the receiving chutes through upper and lower compression springs. A rotating roller is rotatably installed between the upper and lower installation sliding plates.

[0017] Preferably, rolling groups are also arranged at the front and rear ends of the upper end of the supporting plate. The difference is that the installation sliding plates in the receiving chutes on the supporting plate are fixed to the inner wall of the receiving chute, and the rotating roller is flush with the upper surface of the supporting plate.

[0018] Beneficial effects: 1. Through the first - stage bending mechanism, the blanking plate can be initially bent into a U - shaped structure. At the same time, the continuous bending mechanism can drive the two C - shaped sleeve plates I to approach each other, perform secondary bending on the part of the blanking plate located on the receiving groove, and then drive the blanking plate to move upward. Thus, the three - stage bending work is carried out on the corresponding positions at the upper end of the blanking plate through the two bending top plates, turning it into a C - shaped structure. The entire bending process only requires the hydraulic push rod to reciprocate up and down once to complete the three - stage continuous bending of the blanking plate. The degree of automation is high. And when the three - stage bending is completed, the pressure - holding time for the first - stage bending and the second - stage bending is long, and the quality of the metal connecting piece after bending is better.

[0019] 2. The feeding of the blanking plate is made smoother through the conveying rollers of the feeding mechanism. By adjusting the distance between the rectangular support plates through the driving part, the rolling group is exposed, which facilitates the blanking mechanism to push out the finished product more smoothly and can also reduce the wear of the finished product on the bending contact surface. Description of the Drawings

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in a half-section.

[0023] Figure 3 The present invention Figure 2 Enlarged view of the X in the middle.

[0024] Figure 4 It is a left half cutaway three-dimensional structural schematic diagram of the present invention.

[0025] Figure 5 The present invention Figure 4 Enlarged view of Y in the middle.

[0026] Figure 6 The present invention Figure 4 Enlarged view of the Z point in the middle.

[0027] Figure 7 It is a partial cross-sectional three-dimensional structural schematic diagram of the feeding mechanism in the present invention.

[0028] Figure 8 The present invention Figure 7 Enlarged view of the middle W.

[0029] Fig. 9 It is a schematic diagram of the partial cross-section of the three-dimensional structure of the continuous bending mechanism in the present invention.

[0030] Fig.10 It is a three-dimensional structural schematic diagram of the primary bending mechanism and the continuous bending mechanism in the present invention.

[0031] Fig.11 It is a three-dimensional structural schematic diagram of the primary bending mechanism in the present invention.

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of the circular slide groove and the rectangular groove in the present invention from the first perspective.

[0033] Fig.13 It is a schematic diagram of the second perspective stereoscopic structure of the circular slide groove and the rectangular groove in the present invention.

[0034] Fig.14 It is a diagram showing the process changes of bending a straight sheet of material into a metal connector in the present invention.

[0035] In the figure: 1, working platform; 2, rectangular cover plate; 3, avoidance opening; 4, feeding mechanism; 41, feeding port; 42, baffle plate; 43, first rectangular installation groove; 44, conveying roller; 45, first motor; 46, slide rail; 47, electric slider; 48, material pushing plate; 49, second rectangular installation groove; 5, supporting mechanism; 51, accommodating groove; 52, second spring telescopic rod; 53, supporting plate; 6, first-level bending mechanism; 61, hydraulic push rod; 62, supporting column; 63, supporting cross plate; 64, pressing plate; 65, limit adjusting part; 651, waist-shaped through hole; 652, first supporting slide rod; 653, rectangular supporting plate; 654, waist-shaped connecting plate; 655, bidirectional spring telescopic rod; 656, four-head cam; 657, passive gear; 658, second motor; 659, transmission shaft; 660, incomplete gear; 661, supporting shaft; 7, continuous bending mechanism; 71, mounting plate; 72, second-level bending part; 721, return-shaped chute; 722, second supporting slide rod; 723, rectangular groove; 724, mounting column; 725, limiting rod; 726, inner ratchet ring; 727, mounting arc groove; 728, pawl; 729, C-shaped supporting slide plate; 730, first spring telescopic rod; 731, first C-shaped sleeve plate; 732, connecting slide plate; 733, elastic telescopic rod; 74, third-level bending part; 741, inverted T-shaped plate; 742, bending top plate; 743, L-shaped baffle; 744, second C-shaped sleeve plate; 8, accommodating chute; 9, mounting slide plate; 10, rotating roller. Detailed implementation manners

[0036] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the claims.

[0037] Refer to Figure 1 , a bending and forming device for RV accessories, including a working platform 1. A rectangular cover plate 2 with a downward opening is installed at the upper end of the working platform 1. Avoidance openings 3 are provided at both the left and right ends of the rectangular cover plate 2. A conveying unit is jointly arranged on the working platform 1 and the rectangular cover plate 2. A supporting mechanism 5 is arranged on the working platform 1. A first-level bending mechanism 6 is jointly arranged on the working platform 1 and the rectangular cover plate 2. A continuous bending mechanism 7 is jointly arranged by the first-level bending mechanism 6 and the rectangular cover plate 2.

[0038] Refer to Figure 1 , Figure 4 and Figure 7The conveying unit includes a loading mechanism 4 for pushing the material sheet to be bent and a unloading mechanism for pushing the bent finished product. The loading mechanism 4 includes a feed port 41 opened at the lower side of the front end of the rectangular cover plate 2, and two baffle plates 42 are installed on the inner walls of the front and rear ends of the rectangular cover plate 2. The baffle plates 42 are located at the left and right ends of the feed port 41, and the lower ends of multiple baffle plates 42 are all attached to the working platform 1. A rectangular mounting groove 43 is opened on the front side of the upper end of the working platform 1. A plurality of conveying rollers 44 are rotatably installed in the rectangular mounting groove 43. The left ends of the multiple conveying rollers 44 are all rotatable and penetrate the working platform 1, and the left ends of the multiple conveying rollers 44 are connected by sprocket chain transmission. A No. 1 motor 45 is installed on the left end of the working platform 1 through a motor seat, and the output shaft of the No. 1 motor 45 is fixedly connected to any one of the conveying rollers 44.

[0039] See also Figure 1 , Figure 2 and Figure 4 The supporting mechanism 5 includes a receiving groove 51 opened in the middle of the upper end of the working platform 1, and a plurality of spring telescopic rods 52 evenly distributed in a rectangular shape are installed through the bottom wall of the receiving groove 51. The telescopic ends of the plurality of spring telescopic rods 52 are jointly installed with a supporting plate 53 slidably connected to the receiving groove 51. When the spring telescopic rods 52 are not subjected to external force, the upper end surface of the supporting plate 53 is flush with the working platform 1.

[0040] First, the material sheet to be bent is transported from the feed port 41 to the working platform 1 by an external loading device, and the material sheet is transported backward to the supporting plate 53 under the action of the conveying roller 44, and the baffle plate 42 limits the left and right ends of the material sheet.

[0041] See also Figure 1 , Figure 2 , Figure 5 and Fig.11 The primary bending mechanism 6 includes two left and right hydraulic push rods 61 installed through the upper end of the rectangular cover plate 2, and the telescopic ends of the left and right hydraulic push rods 61 are installed with support columns 62. The upper sides of the left and right support columns 62 are commonly fixed with a support cross plate 63, and the lower ends of the left and right support columns 62 are commonly installed with a pressure plate 64. The pressure plate 64 and the support cross plate 63 are commonly provided with a limited position adjustment part 65.

[0042] See also Figure 2 , Figure 5 , Fig.10 and Fig.11The limit adjustment part 65 includes a limit member that moves back and forth, and the limit member includes two front and rear waist-shaped through holes 651 opened at the left end of the pressure plate 64, and support slide bars 652 are slidably installed in the front and rear waist-shaped through holes 651. Front and rear rectangular support plates 653 are slidably installed on the upper end of the pressure plate 64, and waist-shaped connecting plates 654 are installed at the lower positions of the left and right ends of the rectangular support plates 653. The left and right ends of the support slide bar 652 are respectively fixedly connected to the corresponding waist-shaped connecting plates 654. The left and right sides of the upper end of the pressure plate 64 are installed with bidirectional spring telescopic rods 655 through mounting seats, and the front and rear telescopic ends of the bidirectional spring telescopic rod 655 are respectively fixedly connected to the corresponding rectangular support plates 653.

[0043] See also Figure 3 , Figure 5 and Fig.11 The limit adjustment part 65 also includes a driving member for driving the limit member to move back and forth, and the driving member includes two left and right four-head cams 656 rotatably installed on the upper end of the pressure plate 64. The strokes of the four-head cams 656 on the front and rear sides are smaller than the strokes on the left and right sides. The ends of the left and right four-head cams 656 with the same stroke are simultaneously in contact with the front and rear rectangular support plates 653. A passive gear 657 is installed on the upper ends of the left and right four-head cams 656. A No. 2 motor 658 is installed on the lower end of the support cross plate 63 through a motor seat. The output shaft of the No. 2 motor 658 is fixedly connected to a transmission shaft 659, and an incomplete gear 660 is installed on the lower end of the transmission shaft 659. A support shaft 661 is also rotatably installed on the lower end of the support cross plate 63, and an incomplete gear 660 is also installed on the lower end of the support shaft 661. The left and right incomplete gears 660 are arranged symmetrically with the center, and the transmission shaft 659 and the support shaft 661 are connected by belt transmission. The left and right incomplete gears 660 are intermittently meshed with the corresponding passive gear 657 respectively.

[0044] It should be noted that, initially, the two protruding heads with small strokes of the left and right four-head cams 656 contact the front and rear rectangular support plates 653, and one of the incomplete gears 660 is driven to rotate by the No. 2 motor 658, and the other incomplete gear 660 rotates accordingly. The two incomplete gears 660 intermittently engage with the driven gear 657 to rotate, so that the driven gear 657 drives the four-head cam 656 to rotate intermittently 90 degrees in the same direction synchronously, thereby causing the four-head cam 656 to push the rectangular support plates 653 away from each other.

[0045] See also Figure 2 , Figure 6 , Fig. 9 and Fig.10 The continuous bending mechanism 7 includes a pair of mounting plates 71 mounted on the left and right sides of the upper end of the supporting horizontal plate 63 and two secondary bending parts 72 symmetrically arranged front and rear. A tertiary bending part 74 is commonly arranged on the rectangular cover plate 2 and the two secondary bending parts 72 front and rear.

[0046] Refer to Fig. 9 、 Fig.12 and Fig.13 As shown in FIGS.

[0047] Refer to Figure 5 、 Fig. 9 and Fig.10 The secondary bending part 72 further includes a U-shaped support sliding plate 729 fixedly sleeved on the outer wall of the second support sliding rod 722. The U-shaped support sliding plate 729 has an upward opening. The upper end of the U-shaped support sliding plate 729 is slidably attached to the rectangular cover plate 2. On the front and rear inner walls of the rectangular cover plate 2, two left and right spring telescopic rods 730 are respectively installed through mounting seats. The telescopic ends of the two left and right spring telescopic rods 730 are respectively fixedly connected to the upper ends of the two vertical sections on the left and right of the corresponding U-shaped support sliding plate 729. The lower end of the U-shaped support sliding plate 729 is slidably sleeved with a U-shaped sleeve plate 731 through a plurality of compression springs. The middle of the upper end of the U-shaped sleeve plate 731 is provided with a connecting sliding plate 732 that is slidably matched with the opening of the U-shaped support sliding plate 729. The front side of the lower end of the front U-shaped sleeve plate 731 is a wedge-shaped structure, and the front and rear sides of the lower end of the rear U-shaped sleeve plate 731 are both wedge-shaped structures (as shown in Figure 4 ), and an elastic telescopic rod 733 is hinged between each pair of mounting plates 71. The telescopic ends of the two left and right elastic telescopic rods 733 are both rotatably sleeved on the second support sliding rod 722.

[0048] Refer to Figure 2 、 Figure 5 、 Fig. 9 and Fig.10, the three-stage bending part 74 includes an inverted T-shaped plate 741 installed on the inner wall of the upper end of the rectangular cover plate 2. Bending top plates 742 are installed at both the front and rear ends of the horizontal section of the inverted T-shaped plate 741. L-shaped baffles 743 are symmetrically installed at the opposite ends of the front and rear U-shaped sleeve plates one 731. The vertical section of the front L-shaped baffle 743 is shorter than the vertical section of the rear L-shaped baffle 743. The lower end of the vertical section of the front L-shaped baffle 743 is slidably sleeved with a U-shaped sleeve plate two 744 through a plurality of compression springs. The front side of the lower end of the U-shaped sleeve plate two 744 is a wedge-shaped structure.

[0049] It should be noted that the left and right hydraulic push rods 61 are initially in a retracted state. The lower ends of the U-shaped sleeve plate two 744 and the rear L-shaped baffle 743 are both in contact with the working platform 1. When the plurality of conveying rollers 44 convey the material plate and move backward along the plurality of baffle plates 42, during this period, the material plate will抵触 the U-shaped sleeve plate two 744 and cause it to move upward until the rear end of the material plate is closely attached to the rear L-shaped baffle 743. After the feeding alignment work is completed, the first motor 45 stops working.

[0050] After the feeding alignment work is completed, the driving member works to drive the rectangular support plates 653 to move away from each other. Then, control the left and right hydraulic push rods 61 to drive the corresponding support columns 62 to move downward respectively. The left and right support columns 62 together drive the pressing plate 64 to move downward until the pressing plate 64 presses the middle part of the material plate to complete the preliminary bending work. During this period, the material plate will drive the supporting plate 53 to move downward along the receiving groove 51 and bend into a U-shaped structure.

[0051] At the same time, when the hydraulic push rod 61 extends, the plurality of mounting plates 71 will move downward synchronously with the support cross plate 63. At this time, the elastic telescopic rod 733 is driven to move downward, and the included angle of the elastic telescopic rod 733 gradually decreases. Under the limiting action of the loop-shaped chute 721, the elastic telescopic rod 733 will drive the corresponding second support slide rod 722 to slide along the loop-shaped chute 721. At this time, the front and rear second support slide rods 722 gradually approach along the bottom horizontal section of the corresponding loop-shaped chute 721, thereby driving the corresponding U-shaped support sliding plates 729 and U-shaped sleeve plates one 731 to approach each other until the front and rear U-shaped sleeve plates one 731 jointly perform a secondary bending work on the part of the material plate located on the receiving groove 51. And under the supporting action of the front and rear rectangular support plates 653, the part of the material plate located on the receiving groove 51 will be bent into an L-shaped structure.

[0052] After the part of the material plate located on the receiving groove 51 is bent and becomes an L-shaped structure, control the left and right hydraulic push rods 61 to drive the corresponding support columns 62 to move upward to restore their original positions respectively. The pressing plate 64 and the front and rear rectangular support plates 653 will follow and move upward. At this time, the material plate and the front and rear U-shaped sleeve plates one 731 will also follow and move upward. Under the action of a plurality of spring telescopic rods two 52, the supporting plate 53 will follow and move upward to restore its original position. During this period, the front and rear support sliding rods two 722 will first slide from the lower side of the vertical section of the return chute 721 to the upper side position of the vertical section, and under the action of the spring telescopic rod one 730, gradually move away along the upper horizontal section of the return chute 721. The two elastic telescopic rods 733 change from a vertically parallel state to a V-shaped state, and the included angle gradually increases.

[0053] The upward moving material plate is forced to perform the third bending operation under the extrusion of the bending top plate 742, that is, the upper end of the material plate will be bent into a U-shaped structure. Thus, the required metal connector is obtained. The primary bending mechanism 6 can initially bend the material plate into a U-shaped structure. At the same time, the continuous bending mechanism 7 can drive the front and rear U-shaped sleeve plates one 731 to approach each other, perform a secondary bending on the part of the material plate located on the receiving groove 51, and then drive the material plate to move upward. Thus, through the front and rear bending top plates 742, a third bending operation is performed on the corresponding position of the upper end of the material plate to make it into a U-shaped structure. The flat material plate is bent into a U-shaped metal connector through one reciprocating stroke of the hydraulic push rod 61 (as Fig.14 shown). The whole process has a high degree of automation, effectively improving the production efficiency and bending accuracy, and ensuring the production efficiency and product consistency.

[0054] Refer to Figure 7 、 Figure 8 and Fig.11 ,Rolling groups are provided at the opposite ends of the front and rear rectangular support plates 653. The rolling group includes a plurality of receiving chutes 8 uniformly opened from left to right on the rectangular support plate 653. An installation slide plate 9 is slidably connected in the receiving chute 8 through upper and lower compression springs. A rotating roller 10 is rotatably installed between the upper and lower installation slide plates 9. Rolling groups are also provided at the front and rear ends of the upper end of the supporting plate 53. The difference is that the installation slide plate 9 in the receiving chute 8 on the supporting plate 53 is fixed to the inner wall of the receiving chute 8, and the rotating roller 10 is flush with the upper surface of the supporting plate 53.

[0055] Refer to Figure 2 、 Figure 4 and Figure 7 ,The blanking mechanism includes rectangular installation grooves two 49 opened on both sides of the receiving groove 51 at the upper end of the working platform 1. Slide rails 46 are installed in the front and rear rectangular installation grooves two 49. Electric sliders 47 are installed on the slide rails 46. A dialing plate 48 is installed on the upper end of the electric slider 47. The front and rear dialing plates 48 are symmetrically arranged.

[0056] When the second bending of the material sheet is completed, the transmission shaft 659 is first controlled to rotate through the No. 2 motor 658, which indirectly drives the four-head cam 656 to rotate 90 degrees. The two protruding heads of the four-head cam 656 with a small stroke will contact the front and rear rectangular support plates 653, that is, the front and rear rectangular support plates 653 are close to each other. At this time, under the action of the compression spring, the rotating rollers 10 on the front and rear rectangular support plates 653 extend out of the corresponding receiving slide grooves 8 and roll in contact with the inner wall of the material sheet. When the supporting plate 53 drives the material sheet to move upward, the material sheet is first bent for the third time. The rotating rollers 10 on the supporting plate 53 reduce the friction between the bent material sheet and the supporting plate 53 during subsequent unloading.

[0057] Finally, the front and rear two electric sliders 47 are controlled to respectively drive the corresponding material stripping plates 48 to move to the right, and the front and rear two material stripping plates 48 jointly drive the bent material plate to move to the right until it exits the working platform 1 and is received by the external material receiving and conveying device. Then, the front and rear two electric sliders 47 are controlled to respectively drive the corresponding material stripping plates 48 to move to the left and return to their original positions. The above operation steps can be repeated to repeat the bending work of the material plate. The unloading mechanism can push the bent material plate from left to right, which makes material withdrawal convenient, and the multiple rotating rollers 10 can reduce the wear on the surface of the material plate and enable the finished product to be pushed out smoothly.

[0058] In the description of the embodiments of the present invention, it should be noted that the terms: "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "outer", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0059] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bending and forming device for RV accessories, characterized in that: It includes a working platform (1), a rectangular cover plate (2) installed at the upper end of the working platform (1), and a conveying unit jointly arranged between the two. The conveying unit includes a feeding mechanism (4) for pushing the material plate onto the machine and a discharging mechanism for pushing the bent finished product off the machine. The feeding mechanism (4) includes a feeding port (41) opened at the lower side of the front end of the rectangular cover plate (2). A supporting mechanism (5) for supporting the material plate before and after bending is arranged on the working platform (1). The bending and forming device further includes a primary bending mechanism (6) and a continuous bending mechanism (7). The supporting mechanism (5) includes a receiving groove (51) opened in the middle of the upper end of the working platform (1), and a supporting plate (53) slidably arranged in the receiving groove (51) through a spring telescopic rod two (52). The primary bending mechanism (6) includes a limit adjusting part (65) and a pressing plate (64) that moves up and down. The limit adjusting part (65) includes a limiting member that reciprocates back and forth. The limiting member includes a bidirectional spring telescopic rod (655) installed at the upper end of the pressing plate (64) and rectangular support plates (653) fixed at the front and rear two telescopic ends of the bidirectional spring telescopic rod (655). The continuous bending mechanism (7) includes a tertiary bending part (74) and two secondary bending parts (72) symmetrically arranged front and rear. When the pressing plate (64) descends, the material plate is pressed into the receiving groove (51) to form a U-shaped structure, and during the descending process, it cooperates with the secondary bending part (72) to bend the part of the material plate located above the receiving groove (51) into an L-shaped structure. When the pressing plate (64) ascends, the supporting plate (53) lifts the material plate upward and cooperates with the tertiary bending part (74) to bend the part of the material plate located above the receiving groove (51) into a C-shaped structure.

2. The bending and forming device for RV accessories according to claim 1, characterized in that: The limit adjusting part (65) further includes a driving member for driving the rectangular support plates (653) to reciprocate back and forth. The driving member includes two left and right four-headed cams (656) rotatably installed at the upper end of the pressing plate (64). The stroke of the front and rear sides of the four-headed cam (656) is smaller than that of the left and right sides. The ends with the same stroke of the two left and right four-headed cams (656) are simultaneously in contact with the front and rear two rectangular support plates (653). The four-headed cams (656) rotate synchronously and intermittently to push the rectangular support plates (653) away from or close to each other.

3. The bending and forming device for RV accessories according to claim 1, characterized in that: The primary bending mechanism (6) includes two left and right hydraulic push rods (61) fixed to the upper end of the rectangular cover plate (2). Support columns (62) are installed at the telescopic ends of the hydraulic push rods (61). A support cross plate (63) is jointly and fixedly sleeved on the upper sides of the two left and right support columns (62). The pressing plate (64) is fixed to the lower ends of the two left and right support columns (62).

4. The bending and forming device for RV accessories according to claim 1, characterized in that: The secondary bending part (72) includes return-shaped sliding grooves (721) opened on the inner walls at both left and right ends of the rectangular cover plate (2). A second support sliding rod (722) is slidably installed on the inner walls of the left and right return-shaped sliding grooves (721). Rectangular grooves (723) are opened on the inner walls at both left and right ends of the rectangular cover plate (2) and within the return-shaped sliding grooves (721). The secondary bending part (72) further includes a U-shaped support sliding plate (729) fixedly sleeved on the outer wall of the second support sliding rod (722). The front and rear inner walls of the rectangular cover plate (2) are respectively connected to the corresponding U-shaped support sliding plates (729) through two left and right spring telescopic rods one (730). A U-shaped sleeve plate one (731) is slidably sleeved on the lower end of the U-shaped support sliding plate (729) through a plurality of compression springs. An elastic telescopic rod (733) is hinged. Elastic telescopic rods (733) are hinged on both left and right sides of the upper end of the support cross plate (63). The telescopic ends of the left and right elastic telescopic rods (733) are rotatably sleeved on the second support sliding rod (722).

5. The bending and forming device for RV accessories according to claim 4, characterized in that: Anti-reverse parts are jointly arranged on both the left and right return-shaped sliding grooves (721) and the rectangular cover plate (2). The anti-reverse parts play an anti-reverse role in the sliding direction of the second support sliding rod (722). The anti-reverse parts include mounting columns (724) rotatably penetrating and installed at positions corresponding to the rectangular grooves (723) on the outer wall of the rectangular cover plate (2). A plurality of limiting rods (725) evenly distributed in a circular pattern are installed at one end of the mounting column (724) located within the rectangular groove (723). Inner ratchet rings (726) are installed at one end of the mounting column (724) located outside the rectangular cover plate (2). Mounting arc grooves (727) are symmetrically opened on the outer wall of the mounting column (724) corresponding to the inner ratchet rings (726). Pawls (728) are hinged on the inner walls of the mounting arc grooves (727) through compression springs. The two pawls (728) are arranged with opposite orientations, and both pawls (728) are intermittently engaged with the corresponding inner ratchet rings (726).

6. The bending and forming device for RV accessories according to claim 4, characterized in that: The tertiary bending part (74) includes an inverted T-shaped plate (741) installed on the upper inner wall of the rectangular cover plate (2). Bending top plates (742) are installed at both front and rear ends of the horizontal section of the inverted T-shaped plate (741). L-shaped baffles (743) are symmetrically installed at the opposite ends of the two U-shaped sleeve plates one (731). The vertical section length of the front L-shaped baffle (743) is shorter than the vertical section length of the rear L-shaped baffle (743). A U-shaped sleeve plate two (744) is slidably sleeved on the lower end of the vertical section of the front L-shaped baffle (743) through a plurality of compression springs. The lower front side of the U-shaped sleeve plate two (744) is of a wedge-shaped structure.

7. The bending and forming device for RV accessories according to claim 1, characterized in that: The blanking mechanism includes rectangular installation grooves two (49) opened on both front and rear sides of the upper end of the working platform (1) and located on both sides of the accommodation groove (51). Slide rails (46) are installed in the front and rear rectangular installation grooves two (49). Electric sliders (47) are installed on the slide rails (46). Pushing plates (48) are installed on the upper ends of the electric sliders (47). The front and rear pushing plates (48) are symmetrically arranged.

8. The bending and forming device for RV accessories according to claim 1, characterized in that: The feeding mechanism (4) further comprises a conveying roller (44) and a material baffle plate (42). Two material baffle plates (42) are installed on the inner walls at both ends of the rectangular cover plate (2). The material baffle plates (42) are located at the left and right ends of the feed port (41). A rectangular mounting groove (43) is provided on the front side of the upper end of the working platform (1). A plurality of conveying rollers (44) are rotatably installed in the rectangular mounting groove (43). The left ends of the plurality of conveying rollers (44) are all rotatably inserted through the working platform (1), and the left ends of the plurality of conveying rollers (44) are connected by a sprocket chain transmission.

9. The bending and forming device for RV accessories according to claim 1, characterized in that: The opposite ends of the front and rear rectangular support plates (653) are both provided with rolling groups, the rolling groups comprising a plurality of accommodating slide grooves (8) evenly arranged from left to right on the rectangular support plate (653), a mounting slide plate (9) being slidably connected in the accommodating slide groove (8) via two upper and lower compression springs, and a rotating roller (10) being rotatably installed between the upper and lower mounting slide plates (9).

10. A RV accessory bending and forming device according to claim 9, characterized in that: The upper end of the support plate (53) is also provided with two front and rear rolling groups, the difference being that the mounting slide plate (9) in the receiving slide groove (8) on the support plate (53) is fixed to the inner wall of the receiving slide groove (8), and the rotating roller (10) is flush with the upper surface of the support plate (53).

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