Metal shell seam wrapping equipment and seam wrapping method

Abstract

The invention provides metal shell seam wrapping equipment and a wrapping method, the metal shell seam wrapping equipment comprises a rack, the rack is provided with a processing station, and the two ends of the processing station are provided with a feeding station and a discharging station; the material tightening mechanism is used for fixing the metal shell on the machining station and comprises material clamping mechanisms arranged on the two sides of the machining station and used for clamping the side wall of the metal shell and a material pressing mechanism arranged at the upper end of the machining station and used for pressing the upper surface of the metal shell. The seaming assembly is arranged at the upper end of the machine frame in a sliding fit mode in the length direction of the machining station, can move among the feeding station, the machining station and the discharging station and comprises a left seaming mechanism and a right seaming mechanism which are symmetrically arranged on the two sides of the upper end of the machining station and used for conducting edge folding seaming on the edges of the two sides of the metal shell respectively. According to the metal shell seam wrapping equipment, the product seam forming precision is improved, surface defects are reduced, and the integrity and attractiveness of a metal shell structure are ensured.

Description

Technical Field

[0001] This invention relates to a metal wrapping device, and more particularly to a metal shell bite-wrapping device and wrapping method. Background Technology

[0002] Currently available seam or seam wrapping equipment mostly adopts a "material moves, equipment remains stationary" design. It uses rollers to mechanically compress the material, keeping it moving within a fixed seam device to achieve seam wrapping. This process performs well with metal shells of moderate thickness, as the shells can withstand the stress concentration from the roller line contact and provide good friction for material movement. However, when seam wrapping ultra-thin metal shells, this process often cannot avoid surface indentations and hollow structural deformation caused by the roller mechanical compression.

[0003] A type of floating structure is a strip structure with a foam float inside and a metal shell on the outside. The metal shell is made of ultra-thin metal material. Traditional seaming equipment cannot meet its processing requirements, which can easily lead to hollowing, deformation or shell cracking of the floating structure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a metal shell biting wrapping device and wrapping method that can achieve non-destructive biting wrapping of ultra-thin metal shells, avoid surface indentations and structural deformation, and ensure a tight bond between the metal shell and the internal foam float.

[0005] This invention provides a metal casing bite-lock wrapping device, comprising: The frame 1 is provided with a processing station 102, and the processing station is provided with a support plate for placing materials. The two ends of the processing station 102 are provided with a feeding station 101 and a discharging station 103. The clamping mechanism is used to fix the metal shell on the processing station 102, including clamping mechanism 7 set on both sides of the processing station 102 and used to clamp the side wall of the metal shell, and pressing mechanism set at the upper end of the processing station 102 and used to press the upper surface of the metal shell. The support plate, the clamping mechanism and the pressing mechanism form a working area, and the upper two sides of the working area are provided with working windows for receiving the materials to be processed with exposed upper sides. The bite assembly 8 is slidably mounted on the upper end of the frame 1 along the length direction of the processing station 102, and can move between the feeding station 101, the processing station 102 and the discharging station 103. It includes a left bite mechanism and a right bite mechanism symmetrically arranged on both sides of the upper end of the processing station 102 and used to perform edge-folding bite on the two sides of the metal shell exposed to the working window.

[0006] Furthermore, the clamping mechanism 7 includes a fixed clamping mechanism 72 fixed on one side of the processing station 102 and a movable clamping mechanism 71 slidably connected to the other side of the processing station 102 and capable of moving toward or away from the fixed clamping mechanism 72. A clamping area for clamping the side wall of the metal housing is formed between the movable clamping mechanism 71 and the fixed clamping mechanism 72.

[0007] Furthermore, one side of the frame 1 is provided with multiple sets of first guide rails 713 along the length direction. The length direction of the first guide rails 713 is perpendicular to the length direction of the processing station 102. The moving clamping mechanism 71 is slidably mounted on the first guide rails 713.

[0008] Furthermore, each set of the first guide rails 713 includes an upper guide rail and a lower guide rail arranged in parallel.

[0009] Furthermore, the pressing mechanism includes a lifting seat 4 parallel to the length direction of the frame 1 and vertically sliding above the frame 1, and a lifting drive mechanism 3 for driving the lifting seat 4 to rise and fall; the lower end of the lifting seat 4 is provided with a pressing boss 42, which is located directly above the processing station 102; the left biting mechanism and the right biting mechanism are respectively arranged on both sides of the pressing boss 42 and can move down synchronously with the lifting seat 4.

[0010] Furthermore, it also includes a bite drive mechanism for driving the left bite mechanism and the right bite mechanism to move synchronously; the bite drive mechanism includes a main shaft disposed at both ends of the pressing mechanism, with transmission wheels respectively installed at both ends of the main shaft, and a transmission belt installed between the two transmission wheels located on the same side, the left bite mechanism and the right bite mechanism being connected to the two transmission belts respectively and moving synchronously, wherein one of the main shafts is connected to a motor and serves as the power end.

[0011] Furthermore, the bite assembly 8 is mounted on the pressing mechanism and can rise and fall synchronously with the pressing mechanism.

[0012] Furthermore, the lower end of the lifting seat 4 is provided with a first guide rail 43 along the length direction, and the two ends of the first guide rail 43 extend to the top of the feeding station 101 and the discharging station 103 respectively; there are two first guide rails 43 and they are arranged on both sides of the pressing boss 42; the left biting mechanism and the right biting mechanism are respectively slidably mounted on the two first guide rails 43.

[0013] Furthermore, the lower end of the pressing boss 42 is provided with a pressing plate 44 along the length direction.

[0014] Furthermore, multiple gantry frames 2 are sequentially arranged along the length direction on the frame 1, and the material tightening mechanism is arranged on the gantry frames 2.

[0015] Furthermore, the frame 1 is provided with a clamping drive device 5 for driving the clamping mechanism 7 to move and a pressing drive device 3 for driving the pressing mechanism 7 to rise and fall. The clamping drive device 5 and the pressing drive device 3 are hydraulic cylinders.

[0016] Furthermore, the clamping drive device 5 and the pressing drive device 3 are respectively installed on the top and side wall of the gantry frame of the machine frame 1.

[0017] Furthermore, it also includes a limiting device for limiting the clamping mechanism 7 and / or the pressing mechanism.

[0018] Furthermore, the frame 1 is provided with a first limiting device 6 for limiting the clamping mechanism 7. The first limiting device 6 includes a first mounting base 61 fixed on the frame 1. A first limiting rod 62 is fixed on the first mounting base 61. The length direction of the first limiting rod 62 is parallel to the moving direction of the clamping mechanism 7. A first limiting plate 712 is provided on the side wall of the clamping mechanism 7. A first through hole is opened on the first limiting plate 712 to allow the first limiting rod 62 to pass through. A first limiting block 63 is provided on the first limiting rod 62. There are two first limiting blocks 63, which are located on both sides of the first limiting plate 712 and are used to limit the two extreme positions of the clamping mechanism 7.

[0019] Furthermore, the surface of the first limiting block 63 is provided with a rubber layer or is made entirely of rubber.

[0020] Furthermore, the gantry frame 2 of the frame 1 is provided with a second limiting device for limiting the pressing mechanism. The second limiting device includes a second mounting base fixed to the top of the pressing mechanism. The second mounting base is provided with a second limiting rod 401. The length direction of the second limiting rod 401 is parallel to the lifting direction of the pressing mechanism. The gantry frame 2 is provided with a second limiting plate 45. The second limiting plate 45 has a second through hole for the second limiting rod 401 to pass through. The second limiting rod 401 is provided with a second limiting block 402. There are two second limiting blocks 402, which are respectively arranged on both sides of the second limiting plate 45.

[0021] Furthermore, the surface of the second limiting block 402 is provided with a rubber layer or is made entirely of rubber.

[0022] Furthermore, the left and right biting mechanisms are sequentially provided with a first biting assembly, a biting wheel assembly 85, and a second biting assembly along the length of the processing station 102. The first biting assembly is located near the feeding station 101, and the second biting assembly is located near the discharging station. The first biting assembly is used to fold the end of the metal shell inward and fit it against the bent part of the end of the metal top plate to form a primary biting structure. The biting wheel assembly 85 is used to press the primary biting structure. The second biting assembly is used to bend the primary biting structure inward and fit it against the top surface of the metal top plate to form a secondary biting structure.

[0023] Furthermore, the first bite assembly includes a primary bite guide wheel group 83 and a primary bite conical wheel group 84 arranged sequentially. A primary bite guide wheel group 83 is provided on one side with a primary guide wheel baffle 82. A guide gap is formed between the primary bite guide wheel group 83 and the primary guide wheel baffle 82 to guide the end of the metal shell to perform the first bite. The primary bite guide wheel group 83 is used to bend the end of the metal shell inward, and the primary bite conical wheel group 84 is used to bend the end of the metal shell further downward.

[0024] Furthermore, the primary bite guide wheel assembly 83 includes a plurality of primary bite guide wheels arranged in sequence, wherein the angle between the working surface of the primary bite guide wheel and the side wall of the metal housing gradually increases, which is used to gradually bend the end of the metal housing inward.

[0025] Furthermore, the primary bite conical wheel assembly 84 includes a plurality of primary bite conical wheels arranged sequentially, wherein the angle between the working surface of the primary bite conical wheel and the side wall of the metal housing decreases sequentially, which is used to gradually bend the end of the metal housing downward.

[0026] Furthermore, the clamping wheel assembly 85 includes two parallel clamping wheels, and a clamping area for pressing the primary clamping structure is formed between the two clamping wheels.

[0027] Furthermore, the second bite assembly includes a secondary bite guide wheel group 86 and a secondary bite conical wheel 87 arranged sequentially. The secondary bite guide wheel group is used to bend the primary bite structure inward, and the secondary bite conical wheel is used to press the primary bite structure further downward so that it is tightly attached to the top surface of the metal shell.

[0028] Furthermore, the secondary bite guide wheel assembly 86 includes multiple secondary bite guide wheels distributed along the transmission direction. The angle between the working surface of the secondary bite guide wheel and the side wall of the metal shell gradually increases, which is used to gradually bend the primary bite structure inward.

[0029] Furthermore, the working surface of the secondary bite conical wheel 87 is inclined to the top surface of the metal shell and can press the end of the secondary bite structure.

[0030] Meanwhile, the present invention also provides a method for wrapping a metal shell with a bite-like opening, which includes the following steps: S1. Reset: The bite assembly 8 moves toward the discharge station 103 and is reset. S2, Feeding: The material to be processed is fed from the feeding station 101 end into the processing station 102. The material to be processed includes a metal shell 93 with an open top, an inner liner 91 set inside the metal shell 93, and a metal top plate 92 located at the top of the inner liner 91. The two sides of the metal top plate 92 are bent upwards and serve as bending parts 921. The two sides of the metal shell are higher than the bending parts and serve as bending parts 931. S3, clamping: the moving clamping mechanism 72 moves horizontally inward and clamps both sides of the material; S4. Pressing material: The pressing mechanism moves down and presses the metal top plate downwards. S5. Biting: The biting assembly 8 gradually moves towards the feeding station. The left biting component and the right biting component on the biting assembly 8 move synchronously and perform a primary biting and a secondary biting on both sides of the metal shell. The primary biting is used to bend the end of the metal shell inward and fit it against the bent portions 921 on both sides of the metal top plate 92 to form a primary biting structure. The secondary biting is used to further press the primary biting structure inward so that it fits tightly against the top surface of the metal shell to form a secondary biting structure. S6. After the bite assembly 8 separates from the material, it enters the feeding station, and the biting is completed. S7. The material is released, the pressing mechanism moves upward, the moving clamping mechanism 72 moves outward, and the material is released; S8. Discharge: Remove the material that has completed the seaming process from the discharge station 103.

[0031] Furthermore, between the first and second bites, the first bite structure is pressed by a clamping wheel, so that the folded end of the metal shell is fully clamped to the bent part of the metal top plate.

[0032] Furthermore, during a single biting process, the end of the metal shell is gradually bent inward by multiple single biting guide wheels of the single biting guide wheel group 83; then, the end of the metal shell is gradually bent downward by multiple single biting conical wheels of the single biting guide wheel group 83, so that it fits the bent part of the metal top plate.

[0033] Furthermore, during the secondary seaming process, the primary seaming structure is gradually bent inward by the multiple secondary seaming guide wheels of the secondary seaming guide wheel group 86, so that it fits the top surface of the metal shell; then, the bending part is further compacted by the inclined working surface of the secondary seaming conical wheel 87.

[0034] This invention relates to a metal shell biting and wrapping device, employing a design concept of stationary material handling and movable equipment. This avoids extrusion deformation of the material and metal shell, preventing any impact on the structural strength and aesthetics of the formed product. It supports efficient biting and wrapping of ultra-thin (0.1mm-0.5mm) metal shells without thickness limitations. High fit is achieved through overall surface extrusion and fixation, ensuring a compact overall wrapping structure. Without the use of glue, the formed structure is tight and free of voids, with a close bond between the metal shell and the internal float material. The biting mechanism simultaneously bites the metal shell during movement. The movement speed of the biting mechanism can be adjusted by controlling the motor. Material loading and unloading are simple; push-pull operation automatically completes the biting and forming process, resulting in high efficiency. The clamping and pressing mechanisms are adaptable to foam floats of different sizes, and the internal pulleys of the biting mechanism can be replaced to produce floats of different sizes and biting shapes. The biting mechanism continuously bites and forms the metal shell, resulting in a continuous bite with integrity, high precision, and low internal stress. The equipment has a clear internal functional design and is easy to maintain. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the metal shell biting and wrapping device of the present invention; Figure 2 This is a cross-sectional view of the metal casing bite-lock wrapping device of the present invention; Figure 3 This is another transverse sectional view of the metal casing bite-lock wrapping device of the present invention; Figure 4 for Figure 3 Enlarged view of section A in the middle; Figure 5 This is a longitudinal sectional view of the metal shell bite-wrap device of the present invention; Figure 6 for Figure 5 Enlarged view of section B in the middle; Figure 7 This is another longitudinal sectional view of the metal casing bite-lock wrapping device of the present invention; Figure 8 for Figure 7 Enlarged view of section C; Figure 9 This is a schematic diagram of the first angle structure of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 10 This is a schematic diagram of the second angle structure of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 11 This is a schematic diagram of the third angle structure of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 12This is a cross-sectional view of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 13 This is a second planar sectional view of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 14 This is a third planar sectional view of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 15 This is a fourth planar sectional view of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 16 This is a fifth planar sectional view of the biting mechanism of the metal shell biting wrapping device of the present invention; Figure 17 This is a structural diagram of the material; Figure 18 This is a schematic diagram of a single-bite structure; Figure 19 This is a schematic diagram of a secondary seam structure.

[0036] In the diagram: 1. Frame, 2. Gantry frame, 3. Pressing drive / lifting drive mechanism, 4. Lifting seat, 5. Clamping drive device, 6. First limiting device, 7. Clamping mechanism, 8. Grip assembly, 13. Motor, 42. Pressing boss, 43. Second guide rail, 44. Pressing plate, 45. Second limiting plate, 61. First mounting base, 62. First limiting rod, 63. First limiting block, 71. Moving clamping mechanism, 72. 81. Fixed clamping mechanism; 82. Mounting plate; 83. Primary guide wheel baffle; 84. Primary bite guide wheel assembly; 85. Primary bite conical wheel assembly; 86. Biting wheel assembly; 87. Secondary bite guide wheel assembly; 91. Secondary bite conical wheel; 92. Inner liner; 93. Metal top plate; 104. Metal outer shell; 105. Feeding station; 106. Machining station; 107. Discharge station; 138. Main shaft; 139. Motor base. 14. Transmission wheel; 401. Second limit rod; 402. Second limit block; 811. Slider; 831. First bite guide wheel a; 832. First bite guide wheel b; 833. First bite guide wheel c; 8301. First upper wheel body; 8302. First lower wheel body; 841. First bite conical wheel a; 842. First bite conical wheel b; 843. First bite conical wheel c; 844. First bite conical wheel... Wheel d, 8401, first outer wheel body, 8402, first inner wheel body, 851, third wheel axle, 852, pressing wheel body, 861, secondary bite guide wheel a, 862, secondary bite guide wheel b, 863, secondary bite guide wheel c, 8601, second upper wheel body, 8602, second lower wheel body, 8701, second inner wheel body, 8702, second outer wheel body, 921, bending part, 931, part to be bent. Detailed Implementation

[0037] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] See Figures 1-16 The present invention provides a metal shell biting wrapping device, including a frame 1, a clamping mechanism and a biting assembly 8, which is used to wrap an ultra-thin metal shell around an inner liner. The inner liner is a float made of foam material and has a rectangular cross-section.

[0039] The frame 1 serves as the main structure and is a strip structure. A processing station 102 is provided on the frame 1. The two ends of the processing station 102 are provided with a feeding station 101 and a discharging station 103. The processing station 102 is used to accommodate the material to be processed. The two ends of the processing station 102 are open and used for feeding and discharging, respectively. The bottom surfaces of the feeding station 101, the processing station 102 and the discharging station 103 are all provided with support plates for placing (supporting) the material.

[0040] The clamping mechanism is used to fix the metal shell on the processing station 102 for processing. It includes a clamping mechanism 7 and a pressing mechanism. The clamping mechanism 7 is set on both sides of the processing station 102 to fit and clamp the side walls of the metal shell. The pressing mechanism is set at the upper end of the processing station 102 to press the upper surface of the metal shell (i.e., the metal plate). This clamping mechanism is used to fix the material and prevent displacement during the material processing. On the other hand, by fitting and pressing, the metal shell and the inner liner fit more closely, ensuring the precision of the bite molding and avoiding gaps or wrinkles, thereby improving the overall sealing performance and structural strength of the package.

[0041] In this application, the clamping mechanism 7 is basically the same as the side wall shape and size of the material, and the pressing mechanism is basically the same as the upper surface shape and size of the metal shell, but slightly smaller, to ensure that it fully fits the metal shell during the clamping process and effectively prevents deformation or displacement caused by uneven pressure during processing; at the same time, it allows the metal shell to fully fit the inner liner inside and avoids gaps.

[0042] The bite assembly 8 is located at the upper end of the frame 1 and can slide along the length of the processing station 102, thereby moving between the feeding station 101, the processing station 102 and the discharging station 103. It includes a left bite mechanism and a right bite mechanism symmetrically arranged on both sides of the upper end of the processing station 102. The left bite mechanism and the right bite mechanism are used to fold and bite the two sides of the metal shell, thereby covering the metal shell with the outer liner.

[0043] The present invention relates to a metal shell biting and wrapping device that fixes the material while the biting assembly moves. This adopts a working mode in which the material remains stationary while the equipment moves, fundamentally eliminating dimensional deviations caused by material loosening in traditional processing and significantly improving biting and forming accuracy.

[0044] Traditional equipment often operates on a stationary equipment-material-moving model, where the long, strip-shaped metal casing is prone to deformation during transport due to its own weight or friction. This application utilizes a design where the seam assembly slides along the workstation, keeping the material stationary throughout the process and reducing the risk of deformation from the outset. This design is particularly suitable for processing ultra-thin metal materials.

[0045] The clamping mechanism, combined with the precise folding of the seam assembly, ensures that the metal outer shell completely covers the inner liner, effectively preventing air from entering, avoiding air pockets, and improving product quality.

[0046] In this application, the clamping mechanism 7 includes a fixed clamping mechanism 72 and a movable clamping mechanism 71. The fixed clamping mechanism 72 is fixed on one side of the processing station 102, and the movable clamping mechanism 71 is located on the other side of the processing station 102. The movable clamping mechanism 71 can move horizontally towards or away from the fixed clamping mechanism 72. Both the movable clamping mechanism 71 and the fixed clamping mechanism 72 include a clamping plate for fitting and clamping the side wall of the metal shell. The two clamping plates are arranged opposite to each other, forming a clamping area between them for fitting and clamping the side wall of the metal shell. The fixed clamping mechanism 72 is fixed on one side of the processing station as a reference surface. The movable clamping mechanism 71 can move horizontally to fit the side wall of the metal shell from the other side. The clamping area formed by the two can apply uniform lateral pressure to the metal shell, avoiding the unilateral offset problem that is easily caused by unilateral fixation, and ensuring that the metal shell is always in the preset position during the biting process, thereby improving the position and processing accuracy.

[0047] In this embodiment, multiple sets of first guide rails 713 are provided along the length direction on one side of the frame 1. The length direction of the first guide rails 713 is parallel to the horizontal plane and perpendicular to the length direction of the processing station 102. The movable clamping mechanism 71 is slidably mounted on the first guide rails 713, and can move horizontally in the direction close to or away from the fixed clamping mechanism 72 to achieve loosening or clamping. The multiple sets of guide rails are continuously distributed along the length of the frame, covering the entire range of the processing station. The movable clamping mechanism can provide a stable lateral clamping force along the entire length of the long strip metal shell, avoiding wrinkles or gaps caused by local loosening, ensuring that the metal shell and the inner liner fit tightly along the entire length, and improving product quality.

[0048] Furthermore, each set of first guide rails 713 includes an upper guide rail and a lower guide rail arranged in parallel. Each set of first guide rails adopts an upper guide rail and a lower guide rail arranged in parallel to form a symmetrical double support structure, which effectively limits the up-and-down tilting or swaying when the moving clamping mechanism moves, improves the straightness of the moving trajectory, avoids positioning deviation caused by single-sided support, ensures the fit of the metal shell sidewall when clamping, and thus improves the clamping accuracy and subsequent bite forming quality.

[0049] In this application, the seam assembly 8 is installed on the pressing mechanism and can rise and fall synchronously with the pressing mechanism. When the pressing mechanism presses down, the seam assembly moves down to the seam height synchronously, ensuring that the folding action and the pressing process are highly coordinated, reducing the time delay and position error caused by step-by-step operation, realizing the integrated operation of pressing and folding, achieving seamless connection between pressing and folding, and avoiding material springback or folding offset caused by misalignment of action sequence.

[0050] The pressing mechanism includes a lifting seat 4 and a lifting drive mechanism 3. The lifting seat 4 is parallel to the length direction of the frame 1 and is vertically slidably mounted on top of the frame 1. The lifting seat 4 is used to drive the lifting seat 4 to rise and fall. A pressing boss 42 is provided at the lower end of the lifting seat 4, located directly above the processing station 102. A pressing plate 44 is provided along the length direction at the lower end of the pressing boss 42 for pressing the top surface of the metal shell, i.e., the metal top plate. The left and right biting mechanisms are respectively located on both sides of the pressing boss 42 and can move down synchronously with the lifting seat 4. The pressing plate is designed to fully cover the length of the processing station, which can achieve uniform pressing of the metal top plate along the entire length, improve the fit between the outer shell and the foam inner liner, and avoid wrinkles. The left and right biting mechanisms move down synchronously with the lifting seat, and the pressing and biting processes are seamlessly connected, eliminating the need for step-by-step operations and significantly improving processing efficiency and structural stability.

[0051] In this embodiment, a working area is formed between the support plate, clamping mechanism 7, and pressing mechanism on the processing station for fixing and biting the material to be processed. Working windows are provided on both sides of the upper end of the working area. These working windows can accommodate the upper sides of the material to be processed (i.e., the metal shell), i.e., the exposed upper corners, thus allowing the biting mechanism to perform biting operations. The length direction of these working windows is parallel to the length direction of the working area. Specifically, the width of the pressing boss 42 is less than the width of the working area, thus forming working windows on both sides of the pressing boss for biting and forming operations. Specifically, there is a height difference between the bottom surfaces of the two sides of the lifting seat 4 and the bottom surface of the pressing boss 42, forming a concave structure, which facilitates biting installation. Zone 40 is used to install the seaming mechanism. The seaming installation zone 40 is located directly above the working window. In this embodiment, the seaming installation zone 40 is symmetrically arranged on both sides of the pressure boss. With the above structure, the seaming machine can enter the working area from both sides to complete the folding operation. At the same time, the pressure plate keeps the metal top plate pressed, ensuring that the position of the plate remains unchanged during the processing. The height difference design on both sides of the pressure boss provides clearance for the seaming machine without affecting the pressing effect, realizing the simultaneous pressing and seaming actions, improving processing efficiency and forming accuracy, and ensuring the overall sealing and structural strength of the metal shell. Its structure is compact and the installation space is small, which facilitates the layout and integration of equipment in a limited space, while reducing maintenance costs and installation difficulty.

[0052] A first guide rail 43 is provided along the length of the lower end of the lifting seat 4, with both ends of the first guide rail 43 extending above the feeding station 101 and the discharging station 103, respectively. There are two first guide rails 43, which are set on both sides of the pressing boss 42. The left biting mechanism and the right biting mechanism are slidably mounted on the two first guide rails 43, respectively. The two first guide rails are arranged parallel to each other on both sides of the pressing boss, and the left and right biting mechanisms are slidably mounted on them, forming a symmetrical guiding structure. This ensures that the movement trajectory of the biting mechanism strictly follows the direction of the guide rail, avoiding deviation or shaking caused by a single guide rail, and ensuring that the left and right biting mechanisms always maintain a symmetrical position. The weight and biting load of the left and right biting mechanisms are evenly distributed through the two guide rails, avoiding deformation or wear caused by local stress concentration, and improving product accuracy and quality.

[0053] Meanwhile, the frame 1 is equipped with a clamping drive device 5 and a pressing drive device 3. There are multiple clamping drive devices 5, which are arranged sequentially along the length direction. They are used to drive the clamping mechanism 7 to move. In this embodiment, they are used to drive the moving clamping mechanism 71 to move horizontally along the first guide rail. There are also multiple pressing drive devices 3, which are arranged sequentially along the length direction of the processing station. They are used to drive the pressing mechanism to rise and fall. Both the clamping drive device 5 and the pressing drive device 3 are hydraulic cylinders. The multiple hydraulic cylinders are distributed along the length of the frame, which can evenly distribute the thrust to the entire section of the moving clamping mechanism or the pressing plate, ensuring that the long strip workpiece is not loose in any part, and solving the problem of tight ends and loose middle caused by single drive mode. Using hydraulic cylinders as the drive source provides stable and controllable power output, ensuring that the clamping and pressing force is constant, and adapting to the processing needs of metal shells of different thicknesses.

[0054] It also includes a bite drive mechanism for driving the left bite mechanism and the right bite mechanism to move synchronously. The bite drive mechanism includes a main shaft set at both ends of the pressing mechanism. A transmission wheel is installed at each end of the main shaft. A transmission belt is installed between the two transmission wheels on the same side. The left bite mechanism and the right bite mechanism are respectively connected to the two transmission belts, thereby achieving synchronous movement. In addition, one of the main shafts is connected to a motor as the power end.

[0055] In this embodiment, the biting drive mechanism is mounted on the lifting base 4. Specifically, it includes two main shafts 131 mounted at both ends of the pressure boss 42. The axes of the two main shafts 131 are parallel to the horizontal plane and perpendicular to the length direction of the processing station. Two transmission wheels 14 are fixed at both ends of the main shafts, and the two transmission wheels on the same side are connected by a transmission belt 15. At the same time, a motor base 132 is mounted at the lower end of the lifting base 4, and a motor 13 is mounted on the motor base 132. The motor 13 is connected to one of the main shafts through a coupling, driving the main shaft to rotate, thereby driving the transmission belt to move, so that the left and right biting mechanisms move synchronously. The left and right biting mechanisms are respectively connected to the transmission belts on both sides. The motor drives the transmission wheels at both ends to rotate synchronously through the main shaft, so that the linear speed of the two transmission belts is the same. This design avoids the problem of one side being faster and the other slower caused by unilateral drive, ensuring that the left and right biting mechanisms always maintain a symmetrical position during movement, thereby ensuring the synchronicity and accuracy of the biting action, and effectively preventing sheet metal displacement or forming defects caused by uneven force.

[0056] In this embodiment, the conveyor belt is made of steel wire and has sufficient structural strength.

[0057] In this application, multiple gantry frames 2 are sequentially arranged along the length of the frame 1. Each gantry frame 2 includes longitudinal beams 21 on both sides of the frame 1 and crossbeams 22 on top of the two longitudinal beams 21. A material clamping mechanism is arranged on the gantry frame 2. A clamping drive device 5 and a pressing drive device 3 are respectively arranged on the top and side walls of the gantry frame 1. The multiple gantry frames arranged sequentially along the length of the frame evenly distribute the weight of the upper components such as the lifting seat and the biting mechanism to different sections of the frame, effectively improving the overall structural stability of the equipment, avoiding deformation or vibration caused by excessive local load, preventing the middle of the long frame from sagging due to concentrated upper load, improving the overall structural rigidity, and providing reliable support for high-precision machining. The multiple gantry frames are connected to the frame by high-strength bolts, enhancing the overall rigidity and facilitating disassembly and maintenance.

[0058] A third guide rail 23 is provided on the inner side of the longitudinal beam 21. The lifting seat 4 is slidably mounted on the third guide rail 23 and can move up and down.

[0059] In this embodiment, a limiting device is also included for limiting the clamping mechanism 7 and the pressing mechanism.

[0060] Specifically, a first limiting device 6 for limiting the clamping mechanism 7 is provided on the frame 1. The first limiting device 6 includes a first mounting base 61 fixed on the frame 1, and a first limiting rod 62 fixed on the first mounting base 61. The length direction of the first limiting rod 62 is parallel to the moving direction of the clamping mechanism 7. A first limiting plate 712 is provided on the side wall of the clamping mechanism 7. A first through hole is opened on the first limiting plate 712 to allow the first limiting rod 62 to pass through. At the same time, two first limiting blocks 63 are provided on the first limiting rod 62, respectively located on both sides of the first limiting plate 712. Used to limit the two extreme positions of the clamping mechanism 7; the surface of the first limiting block 63 is provided with a rubber layer or is made entirely of rubber; it can limit the clamping mechanism 7, specifically the moving clamping plate 71, to prevent overtravel; made of elastic material, it effectively absorbs impact energy, reduces rigid collisions of moving parts during limiting, reduces vibration and noise, and extends the service life of parts; in this embodiment, the distance between the two first limiting blocks is adjustable, thereby adjusting the extreme position of the moving clamping plate during movement to adapt to the processing requirements of materials of different specifications and improve the versatility and flexibility of the equipment.

[0061] A second limiting device for limiting the pressing mechanism is provided on the gantry 2 of the frame 1. The second limiting device includes a second mounting base fixed to the top of the pressing mechanism, and a second limiting rod 401 is provided on the second mounting base. The length direction of the second limiting rod 401 is parallel to the lifting direction of the pressing mechanism. A second limiting plate 45 is provided on the gantry 2. A second through hole is opened on the second limiting plate 45 to allow the second limiting rod 401 to pass through. Two second limiting blocks 402 are provided on the second limiting rod 401 and are respectively arranged on both sides of the second limiting plate 45. They can limit the pressing mechanism and prevent overtravel. The surface of the second limiting block 402 is provided with a rubber layer or is made entirely of rubber, which effectively absorbs impact energy, reduces rigid collisions of moving parts during limiting, reduces vibration and noise, and extends the service life of parts. In this embodiment, the distance between the two second limiting blocks is adjustable, thereby adjusting the extreme position of the moving pressing mechanism during movement to adapt to the processing requirements of materials of different specifications and improve the versatility and flexibility of the equipment.

[0062] The left and right biting mechanisms are symmetrically arranged and installed on both sides of the frame, respectively, and operate synchronously to achieve precise biting and positioning of the two ends of the metal housing. Specifically, it includes a mounting plate 81, on the top of which are provided multiple sliders 811 for sliding on the first guide rail 43. The left and right biting mechanisms are provided with a first biting assembly, a biting wheel group 85, and a second biting assembly in sequence along the length of the processing station 102. The first biting assembly is located at the end near the feeding station 101, and the second biting assembly... The first biting assembly, the biting wheel assembly 85, and the second biting assembly are arranged sequentially from the front (feeding station) to the rear (discharge station) near the discharge station. The first biting assembly is used to fold the end of the metal shell inward by 180 degrees and fit it against the bent part of the end of the metal top plate to form a primary biting structure. The biting wheel assembly 85 is used to press the primary biting structure. The second biting assembly is used to bend the primary biting structure inward by 90 degrees and fit it against the top surface of the metal top plate to form a secondary biting structure.

[0063] The first biting assembly includes a primary biting guide wheel group 83 and a primary biting conical wheel group 84 arranged sequentially. A primary biting guide wheel group 83 is provided on one side with a primary guide wheel baffle 82, forming a guide gap between the primary biting guide wheel group 83 and the primary guide wheel baffle 82. This guide gap is used to guide the middle part (not the root part) of the metal shell end to bend approximately 90 degrees. The primary biting guide wheel group 83 is used to bend the end of the metal shell inward by approximately 90 degrees, and the primary biting conical wheel group 84 is used to continue bending the end of the metal shell downward, further pressing and shaping the already bent end.

[0064] The primary bite guide wheel assembly 83 includes multiple primary bite guide wheels arranged in sequence. The angle between the working surface of the primary bite guide wheel and the side wall of the metal housing gradually increases, which is used to gradually bend the end of the metal housing inward.

[0065] Specifically, the primary bite guide wheel assembly 83 includes primary bite guide wheels a831, b832, and c833 arranged sequentially along its sliding direction. It includes a vertically arranged first wheel axle and wheel bodies rotatably mounted on the axle. The axis of the first wheel axle is perpendicular to the horizontal plane. The wheel body includes a coaxial first upper wheel body 8301 and a first lower wheel body 8302. The diameter of the first upper wheel body is larger than the diameter of the first lower wheel body, forming a downward-facing stepped surface structure. The bottom surface (end face) of the first upper wheel body 8301 serves as the first working surface, i.e., the stepped surface serves as the first working surface. Each primary bite guide wheel... The angle between the first working surface and the horizontal plane gradually decreases, which is used to gradually bend the end of the metal shell from the initial straight state to the horizontal state; the side wall (arc-shaped surface) of the first lower wheel body 8302 serves as the second working surface; at the same time, the primary guide wheel baffle 82 includes a fixed plate 821, the lower end of the fixed plate is bent 90 degrees toward the primary bite guide wheel to form a guide plate 822 facing the second working surface, which is an L-shaped structure; a guide gap is formed between the end of the guide plate 822 and the second working surface of the primary bite guide wheel to guide the end of the metal shell to bend inward, and the metal shell located above the guide gap can be bent.

[0066] The primary bite conical wheel assembly 84 includes multiple primary bite conical wheels arranged sequentially. The angle between the working surface of the primary bite conical wheel and the side wall of the metal housing decreases sequentially, which is used to gradually bend the end of the metal housing downward.

[0067] Specifically, the primary bite conical wheel assembly 84 includes a primary bite conical wheel a841, a primary bite conical wheel b842, a primary bite conical wheel c843, and a primary bite conical wheel d844 arranged sequentially along the sliding direction. It includes a second wheel shaft, the axis of which is parallel to the horizontal plane and perpendicular to the movement direction of the bite assembly. A wheel body is rotatably mounted on the second wheel shaft. The wheel body includes a first outer wheel body 8401 disposed on the outer side and a first inner wheel body 8402 coaxial with the first outer wheel body 8401 and located on the inner side. The diameter of the first outer wheel body is larger than the diameter of the first inner wheel body, forming an inward stepped surface structure. The inner end face of the first outer wheel body 8401 serves as the third working surface, and the arc-shaped sidewall of the first inner wheel body 8402 serves as the fourth working surface. The angle between the fourth working surface and the horizontal plane gradually increases, which is used to bend the end of the metal shell from the horizontal state inward by 90 degrees so that it fits the bent part of the edge of the metal top plate.

[0068] The clamping wheel assembly 85 includes two parallel clamping wheels. Specifically, it includes a third wheel shaft 851 disposed on a horizontal plane and a pressing wheel body 852 rotatably mounted on the third wheel shaft. A clamping area for pressing the primary clamping structure is formed between two adjacent pressing wheel bodies 852, so that the end of the metal shell after bending 180 degrees is tightly attached to the bent part of the top plate edge.

[0069] The second bite assembly includes a secondary bite guide wheel group 86 and a secondary bite conical wheel 87 arranged sequentially. The secondary bite guide wheel group is used to bend the primary bite structure inward by 90 degrees, and the secondary bite conical wheel is used to press the primary bite structure further downward so that it is tightly attached to the top surface of the metal shell.

[0070] In this embodiment, the secondary bite guide wheel group 86 includes a plurality of secondary bite guide wheels distributed along the transmission direction. The angle between the working surface of the secondary bite guide wheel and the side wall of the metal shell gradually increases, which is used to gradually bend the primary bite structure inward.

[0071] Specifically, the secondary seam guide wheel assembly 86 includes secondary seam guide wheels a861, b862, and c863 arranged sequentially along the sliding direction. It includes a vertically arranged fourth wheel axle and wheel bodies rotatably mounted on the fourth wheel axle. The axis of the fourth wheel axle is perpendicular to the horizontal plane. The wheel bodies include a coaxial second upper wheel body 8601 and a second lower wheel body 8602. The diameter of the second upper wheel body 8601 is larger than the diameter of the second lower wheel body 8602, forming a downward-facing stepped surface structure. The bottom surface (end face) of the second upper wheel body 8601 serves as the fifth working surface, i.e., the stepped surface serves as the fifth working surface. The angle between the fifth working surface of each secondary seam guide wheel and the horizontal plane gradually decreases, used to gradually press the vertical primary seam structure to a horizontal state, achieving contact with the top surface of the metal shell. The side wall (arc-shaped surface) of the second lower wheel body 8602 serves as the second working surface, used for contact and limiting contact with the edge of the material shell.

[0072] The working surface of the secondary bite conical wheel 87 is inclined to the top surface of the metal shell to press the end of the secondary bite structure, so that it fully fits the upper surface of the metal shell and prevents the end from lifting up. The secondary bite conical wheel 87 includes a sixth wheel axle and a wheel body mounted on it. The axis of the sixth wheel axle is parallel to the horizontal plane and perpendicular to the movement direction of the bite assembly. The wheel body includes a second outer wheel body 8702 disposed on the outer side and a second inner wheel body 8701 coaxial with the second outer wheel body 8702 and located on the inner side. The diameter of the second outer wheel body is larger than the diameter of the second inner wheel body, forming an inward stepped surface structure. The inner end face of the second outer wheel body 8702 serves as the sixth working surface, and the arc-shaped sidewall of the second inner wheel body 8701 serves as the seventh working surface. The seventh working surface is inclined to the horizontal plane, forming a frustum-shaped structure with a larger inner side and a smaller outer side, which is used to further press the bite structure downward, so that it fits tightly against the top surface of the metal shell and prevents springback and lifting up.

[0073] To achieve the seaming process of ultra-thin metal shells, this invention gradually bends the metal shell by progressively increasing the tilt angle of the rollers in contact with it. The seaming of the foam float is achieved by a motor-driven seaming structure, in which rollers in the seaming structure successively contact the edge. The seaming process is divided into a first bending and a second bending. The first bending is achieved by three seaming guide wheels and four seaming conical wheels. The three seaming guide wheels merge the edges of the upper and lower iron sheets and create an angle. Then, the four seaming conical wheels with different angles gradually bend the edge of the upper iron sheet, and merge it before the second bending by a seaming wheel. The second bending involves pressing the bent part of the lower iron sheet, which has already wrapped the upper iron sheet, onto the foam float. Therefore, the three secondary seaming guide wheels guide and bend the edge of the bent part of the iron sheet. Finally, the secondary seaming conical wheels complete the bending of the iron sheet to achieve the seaming of the iron sheet.

[0074] This invention relates to a metal shell biting and wrapping device, which adopts the technical concept of stationary material and moving equipment. Through the cooperation of hydraulic and electric motors, it realizes the biting and wrapping production of materials. The hydraulic system is highly efficient and is used in the fixed structure of the material, while the electric motor has stable output power and can pull the biting assembly to produce the biting, realizing the complex biting process of long metal shells that require secondary bending.

[0075] See Figures 17-19 Meanwhile, the present invention also provides a method for encapsulating a metal shell with a bite-lock, which includes the following steps: S1. Reset: The bite assembly 8 moves toward the discharge station 103 and is reset. S2. Feeding: The material to be processed is fed from the feeding station 101 into the processing station 102. The material to be processed includes a metal shell 93 with an open top, an inner liner 91 set inside the metal shell 93, and a metal top plate 92 located above the inner liner 91 (foam float). The two sides of the metal top plate 92 are bent upward at 90 degrees and serve as bending parts 921. The two sides of the metal shell are higher than the bending parts and serve as bending parts 931. S3, clamping: the moving clamping mechanism 72 moves horizontally inward and clamps both sides of the material; S4. Pressing material: The pressing mechanism moves down and presses the metal top plate downwards. S5. Biting: The biting assembly 8 gradually moves towards the feeding station. The left biting component and the right biting component on the biting assembly 8 move synchronously and perform a first biting and a second biting on both sides of the metal shell. The first biting is used to bend the end of the metal shell inward and fit it against the bent parts 921 on both sides of the metal top plate 92 to form a first biting structure. The first biting structure is in a vertical state. The second biting is used to further press the first biting structure inward so that it fits tightly against the top surface of the metal shell to form a second biting structure. During one biting process, the end of the metal shell is gradually bent inward by 90 degrees through multiple biting guide wheels of the biting guide wheel group 83; then, the end of the metal shell is gradually bent downward by 90 degrees through multiple biting conical wheels of the biting guide wheel group 83, so that it fits the bent part of the metal top plate. During the secondary seaming process, the primary seaming structure is gradually bent inward by 90 degrees through the multiple secondary seaming guide wheels of the secondary seaming guide wheel group 86, so that it fits the top surface of the metal shell; then, the bending part is further compacted by the inclined working surface of the secondary seaming conical wheel 87. Between the first and second bites, the first bite structure is pressed by the bite wheel, so that the end of the folded metal shell is fully clamped to the bent part of the metal top plate. S6. After the bite assembly 8 separates from the material, it enters the feeding station, and the biting is completed. S7. The material is released, the pressing mechanism moves upward, the moving clamping mechanism 72 moves outward, and the material is released; S8. Discharge: Remove the material that has completed the seaming process from the discharge station 103. S9, processing complete.

[0076] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A metal casing bite-lock wrapping device, characterized in that, include: A frame, wherein a processing station is provided on the frame, a support plate is provided on the processing station, and a feeding station and a discharging station are provided at both ends of the processing station; The clamping mechanism is used to fix the metal shell on the processing station, including clamping mechanisms disposed on both sides of the processing station for clamping the side walls of the metal shell and pressing mechanism disposed at the upper end of the processing station for pressing the upper surface of the metal shell. The support plate, the clamping mechanism and the pressing mechanism form a working area, and the upper two sides of the working area are provided with working windows for receiving the materials to be processed with exposed upper sides. The bite assembly is installed on the pressing mechanism and can move up and down with the pressing mechanism. The bite assembly can slide along the length of the processing station. It includes a left bite mechanism and a right bite mechanism symmetrically arranged on both sides of the upper end of the processing station and used to perform edge-clamping on the two sides of the metal shell exposed to the working window. The left bite mechanism and the right bite mechanism move synchronously.

2. The metal casing seam wrapping device as described in claim 1, characterized in that: The clamping mechanism includes a fixed clamping mechanism fixed on one side of the processing station and a movable clamping mechanism slidably connected to the other side of the processing station and capable of moving toward or away from the fixed clamping mechanism. A clamping area for clamping the side wall of the metal casing is formed between the movable clamping mechanism and the fixed clamping mechanism.

3. The metal casing seam wrapping device as described in claim 1, characterized in that: The pressing mechanism includes a lifting seat that is parallel to the length of the frame and slidably mounted vertically above the frame, and a lifting drive mechanism for driving the lifting seat to move up and down; the lower end of the lifting seat is provided with a pressing boss, which is located directly above the processing station; the left biting mechanism and the right biting mechanism are respectively arranged on both sides of the pressing boss and can move down synchronously with the lifting seat.

4. The metal casing seam wrapping device as described in claim 1, characterized in that: It also includes a bite drive mechanism for driving the left bite mechanism and the right bite mechanism to move synchronously; the bite drive mechanism includes a main shaft disposed at both ends of the pressing mechanism, with transmission wheels respectively installed at both ends of the main shaft, and a transmission belt installed between the two transmission wheels located on the same side, the left bite mechanism and the right bite mechanism being connected to the two transmission belts respectively and moving synchronously, wherein one of the main shafts is connected to a motor and serves as the power end.

5. The metal casing seam wrapping device as described in claim 1, characterized in that: The left and right biting mechanisms are sequentially provided with a first biting assembly, a biting wheel assembly, and a second biting assembly along the length of the processing station. The first biting assembly is located near the feeding station, and the second biting assembly is located near the discharging station. The first biting assembly is used to fold the end of the metal shell inward and fit it against the bent part of the end of the metal top plate to form a primary biting structure. The biting wheel assembly 85 is used to press the primary biting structure. The second biting assembly is used to bend the primary biting structure inward and fit it against the top surface of the metal top plate to form a secondary biting structure.

6. The metal casing seam wrapping device as described in claim 1, characterized in that: The first biting assembly includes a primary biting guide wheel group and a primary biting conical wheel group arranged in sequence. A primary biting guide wheel group is provided on one side, and a guide gap is formed between the primary biting guide wheel group and the primary guide wheel baffle to guide the end of the metal shell to perform the first biting. The primary biting guide wheel group is used to bend the end of the metal shell inward, and the primary biting conical wheel group is used to bend the end of the metal shell further downward.

7. The metal casing seam wrapping device as described in claim 1, characterized in that: The primary bite guide wheel assembly includes multiple primary bite guide wheels arranged sequentially. The angle between the working surface of the primary bite guide wheel and the side wall of the metal shell gradually increases, which is used to gradually bend the end of the metal shell inward.

8. The metal casing seam wrapping device as described in claim 1, characterized in that: The primary bite conical wheel assembly includes multiple primary bite conical wheels arranged sequentially. The angle between the working surface of the primary bite conical wheel and the side wall of the metal shell decreases sequentially, which is used to gradually bend the end of the metal shell downward.

9. The metal casing seam wrapping device as described in claim 1, characterized in that: The second bite assembly includes a secondary bite guide wheel group and a secondary bite conical wheel arranged in sequence. The secondary bite guide wheel group is used to bend the primary bite structure inward, and the secondary bite conical wheel is used to press the primary bite structure further downward so that it is tightly attached to the top surface of the metal shell. The secondary bite guide wheel group 86 includes a plurality of secondary bite guide wheels distributed along the transmission direction. The angle between the working surface of the secondary bite guide wheel and the side wall of the metal shell gradually increases, which is used to gradually bend the primary bite structure inward.

10. A method for encapsulating a metal casing with a bite-lock, characterized in that, Includes the following steps: S1. Reset: The bite assembly moves towards the discharge station and resets. S2, Feeding: The material to be processed is fed from the feeding station to the processing station. The material to be processed includes a metal shell with an open top, an inner liner set inside the metal shell, and a metal top plate located at the top of the inner liner. The two sides of the metal top plate are bent upwards and serve as bending parts. The two sides of the metal shell are higher than the bending parts and serve as bending parts. S3. Clamping: The moving clamping mechanism moves horizontally inward and clamps both sides of the material. S4. Pressing material: The pressing mechanism moves down and presses the metal top plate downwards. S5. Biting: The biting assembly gradually moves towards the feeding station. The left biting component and the right biting component on the biting assembly move synchronously and perform a primary biting and a secondary biting on both sides of the metal shell. The primary biting is used to bend the end of the metal shell inward and fit it against the bent parts on both sides of the metal top plate to form a primary biting structure. The secondary biting is used to further press the primary biting structure inward so that it fits tightly against the top surface of the metal shell to form a secondary biting structure. S6. After the seam assembly separates from the material, it enters the feeding station, and the seaming is completed. S7. Loosen the material. The pressing mechanism moves upward, the moving clamping mechanism moves outward, and the material is released. S8. Discharge: The material that has completed the seaming process is displaced from the discharge station.

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