Leather shell edge covering mechanism with fillet wrap angle

Abstract

The utility model relates to a leather shell edge wrapping mechanism with a fillet wrap angle, which comprises an angle wrapping device, the angle wrapping device comprises an angle wrapping block, the angle wrapping block is provided with an angle wrapping arc concave surface, the cross section of the angle wrapping arc concave surface is arc-shaped, the angle wrapping block is provided with a three-stage edge folding step, and the three-stage edge folding step is connected to the upper end of the angle wrapping arc concave surface. The bottom of the wrap angle block is a wrap angle horizontal pushing part, and the wrap angle horizontal pushing part is connected to the lower end of the wrap angle arc concave face. According to the corner wrapping block, paperboard round corner wrapping can be completed in the case edge wrapping process, by optimizing the structure of the corner wrapping block, the corner wrapping block is made to sequentially complete upward folding of a face paper part (such as including three corner wrapping claws) step by step, the face paper at the corner wrapping position is not prone to wrinkling, and then final wrapping is completed through cooperation of the corner wrapping horizontal pushing part of the corner wrapping block. And the fillet wrap angle of the paperboard is relatively smooth and compact, and the fillet wrap angle quality is relatively good. And the problem that the surface paper part is folded upwards in one step and is extremely easy to wrinkle due to large corresponding radian is avoided.

Description

Technical Field

[0001] This utility model relates to the edge covering of a casing, and more particularly to the rounded corner covering of the cardboard therein. Background Technology

[0002] The horizontal and vertical edges of the cardboard in the casing are formed by folding the face paper from the edge to cover the edges. Usually, the angle between the horizontal and vertical edges of the cardboard is a right angle, but some angles are rounded. If rounded corners are used, only horizontal and vertical edging will result in the rounded corners not being properly covered and corners not being formed. If corner protectors with rounded surfaces are used to directly cover the corners, the face paper of the corner protector is prone to wrinkles, affecting the quality and effect of the corner protector.

[0003] The paper portion used for corner wrapping is now made into three separate corner-wrapping claws. However, using corner-wrapping blocks with rounded surfaces to directly wrap the corners still results in wrinkles in the paper, affecting the quality and effect of corner wrapping. Utility Model Content

[0004] In view of the technical problems existing in the background art, the present invention aims to provide a leather edge-wrapping mechanism with rounded corners that completes the corner-wrapping treatment and has a relatively good corner-wrapping effect.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a leather edge-wrapping mechanism with rounded corners, including a corner-wrapping device, the corner-wrapping device including a corner-wrapping block, the corner-wrapping block having a rounded concave surface, the cross-section of the rounded concave surface being arc-shaped, characterized in that: the corner-wrapping block is provided with three-level folded edge steps, the three-level folded edge steps are connected to the upper end of the rounded concave surface, the three-level folded edge steps are set facing upwards, the bottom of the corner-wrapping block is a corner-wrapping flat push part, the corner-wrapping flat push part is connected to the lower end of the rounded concave surface.

[0006] The following optimizations or supplementary explanations can be made to the above technical solutions.

[0007] For example, the corner block drive is connected to a corner drive component.

[0008] For example, the corner protection device also includes a corner protection swing arm, on which the corner protection block is mounted; the corner protection device also includes a support base, on which the corner protection swing arm is hinged, and the hinge axis of the corner protection swing arm on the support base is vertically arranged.

[0009] In addition, the support base is configured on the transverse track, and the corner swing arm is hinged to the support base via a pivot, which is vertically positioned.

[0010] The support base is also provided with an upper limit plate and a lower limit plate, and the corner swing arm has a sliding part, which is slidably configured between the upper limit plate and the lower limit plate.

[0011] The hinge axis is located on the inner side, and the corner block is located on the outer side. The corner block moves from the outside to the inside to cooperate with the corner block operation. The skin is placed into position from top to bottom above the corner block.

[0012] For example, the support base is also equipped with an upper hinge seat and a lower hinge seat. The upper hinge seat and the lower hinge seat are respectively equipped with bearings for connecting the rotating shaft. The corner swing arm has a locking hole and a locking groove. The locking groove communicates with the locking hole. The locking hole is fitted onto the rotating shaft. The corner swing arm also has mounting holes for fastener assembly and connection to match the size of the locking groove. Two corner devices are configured on the transverse track. The two corner devices are set up in a mirror image. The hinge axes of the two corner devices are relatively centered and inward. The corner blocks of the two packaging devices are relatively outward.

[0013] The leather casing edge-binding mechanism has an edge-binding device, which includes an edge-binding plate. The edge-binding plate is configured on a longitudinal track. The edge-binding plate is driven by an edge-binding drive component. The corner block is located on one side of the edge-binding plate as it moves longitudinally forward for edge-binding. The edge-binding plate and the corner block are driven together. The edge-binding plate pushes the corner block to wrap the corner. The corner block is also connected to a return spring, which is installed on a support base.

[0014] For example, the edge-binding device is set on the support plate, the edge-binding plate is located on the upper side of the support plate, the longitudinal track is installed on the support plate, the upper side of the edge-binding plate is provided with a mounting frame, the mounting frame is connected to the support plate, the support seat is set on the mounting frame, the corner-binding swing arm is set above the edge-binding plate, the corner-binding swing arm is located on the upper side of the mounting frame, the lower side of the edge-binding plate is provided with a paper support plate, the paper support plate is assembled on the support plate, and the corner-binding block is set above the paper support plate; a paper-accommodating gap is left between the corner-binding pushing part and the paper support plate, and a binding gap is left between the lower side of the edge-binding operation part of the edge-binding plate and the paper support plate; the return spring is a tension spring, one end of the tension spring is connected to the corner-binding swing arm, and the other end of the tension spring is connected to the support seat.

[0015] For example, the mounting frame is equipped with transverse tracks for adjusting the position of the support base laterally. For instance, the tray is a longitudinally telescopic tray, equipped with a longitudinal movement drive component, and the tray is connected to the longitudinal movement drive component in a transmission manner.

[0016] The corner block has a concave, rounded corner surface on the front and a transmission mating part on the back. Additionally, a protective pad is provided at the transmission mating part, and an outer shell surrounds the protective pad.

[0017] The three-tiered edge step includes a first edge step, a second edge step, and a third edge step, arranged sequentially and decreasing or increasing in height at each level. Additionally, a corner protector is provided to keep the corner protector and the edge protector in contact, with a return spring ensuring this contact is maintained.

[0018] The beneficial effects of this utility model are as follows: This rounded corner edge-wrapping mechanism can complete the rounded corner wrapping of cardboard within the edge-wrapping process. Furthermore, through structural optimization of the corner-wrapping block, the folding of the face paper (e.g., with three corner-wrapping claws) upwards is completed step-by-step, preventing wrinkles at the corner. The final wrapping is then completed by the corner-wrapping block's flat-pushing part, ensuring a relatively flat and tight rounded corner wrapping with good quality. This avoids the problem of wrinkles easily occurring when folding the face paper upwards in one step due to its large arc. It is also well-suited for corner wrapping of face paper sections with three corner-wrapping claws. Attached Figure Description

[0019] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 for Figure 1 Top view.

[0022] Figure 3 for Figure 1 Schematic diagram of the middle section.

[0023] Figure 4 for Figure 3 A schematic diagram of the structure of the corner arm and corner block.

[0024] Figure 5 This is a schematic diagram of the shell material structure in an embodiment of the present invention, showing the unwrapped corner and edge of the cardboard and face paper at the angle between them.

[0025] In the picture:

[0026] 1. Corner protection device; 11. Return spring;

[0027] 2. Corner protector block; 20. Three-stage folded edge step; 21. First folded edge step; 22. Second folded edge step; 23. Third folded edge step; 24. Corner protector arc concave surface; 25. Transmission mating part; 26. Connecting hole; 27. Corner protector flat push part;

[0028] 3. Corner control arm; 30. Locking hole; 31. Locking groove; 32. Mounting hole;

[0029] 4. Support base; 40. Transverse rail; 41. Rotating shaft; 42. Upper limit plate; 43. Lower limit plate; 44. Upper hinge seat; 45. Lower hinge seat; 46. Mounting bracket;

[0030] 6. Edge binding device; 60. Edge binding board; 61. Longitudinal track; 62. Supporting board;

[0031] 7. Support plate;

[0032] 90. Cardboard; 91. Rounded corners of cardboard; 92. Facing paper; 93. Paper portion used for rounded corners. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] Referring to the accompanying drawings, in this embodiment, the corner-wrapping mechanism for the outer casing includes a corner-wrapping device 1, which includes a corner-wrapping block 2. The corner-wrapping block 2 has a concave arc-shaped corner-wrapping surface 24, the cross-section of which is arc-shaped. The concave arc-shaped corner-wrapping surface 24 helps to adhere the face paper to the rounded corner surface (thickness) of the cardboard. The corner-wrapping block 2 has three-stage folding steps 20, which are connected to the upper end of the concave arc-shaped corner-wrapping surface 24 and face upwards. When the outer casing to be wrapped is placed from top to bottom, the paper portion used for corner-wrapping can be folded upwards step by step by the three-stage folding steps 20. In particular, when the paper portion uses three separate corner-wrapping claws, it can adapt to larger... For most rounded corner requirements, the three-stage folding steps 20 of the corner wrapping block 2 can fold the paper part upwards step by step, which not only completes the upward fold smoothly, but also makes it less likely to wrinkle the paper part step by step, resulting in relatively good corner wrapping quality and effect. The upward folded face paper part is wrapped and guided by the corner wrapping arc concave surface 24 to make it (face paper part) stick to the rounded corner vertical surface of the cardboard. The bottom of the corner wrapping block 2 is the corner wrapping flat push part 27, which is connected to the lower end of the corner wrapping arc concave surface 24. When the corner wrapping block 2 of the corner wrapping device 1 moves inwards, the corner wrapping flat push part 27 of the corner wrapping block 2 can finally fold the upward folded face paper part towards the upper surface of the cardboard, covering the upper surface of the cardboard, and completing the rounded corner wrapping.

[0035] In this rounded corner edge-wrapping mechanism, the cardboard corners are rounded during the edge-wrapping process. Through structural optimization of the corner-wrapping block 2, the folding of the face paper (including three corner-wrapping claws) is completed step-by-step, minimizing wrinkles at the corners. The corner-wrapping block 2's flat-pushing part 27 then completes the final wrapping, ensuring a relatively flat and tight rounded corner, resulting in high-quality corner wrapping. This avoids the problem of wrinkles easily caused by folding the face paper upwards in one step with a large arc. It is well-suited for corner wrapping with face paper including three corner-wrapping claws.

[0036] Based on the above embodiments, the following optimizations or further explanations can be made.

[0037] For example, corner block 2 is connected to a corner transmission component, which drives the corner block 2 to move. For example, corner block 2 can move diagonally in a straight line, such as by using a cylinder to drive corner block 2 to move diagonally in a straight line from the outside of the rounded corner of the cardboard to the center of the cardboard.

[0038] Alternatively, for example, the swinging translational movement from the outside to the center position in the diagram can be described as follows: Specifically, the corner-wrapping device 1 also includes a corner-wrapping swing arm 3, with the corner-wrapping block 2 mounted on it. The corner-wrapping swing arm 3 drives the corner-wrapping block 2 to swing and translate. For instance, the corner-wrapping device 1 also includes a support base 4, with the corner-wrapping swing arm 3 hinged to it. The hinge axis of the corner-wrapping swing arm 3 on the support base 4 is vertically positioned, allowing the support base 4 to support the swinging of the corner-wrapping swing arm 3 in the horizontal direction, thus driving the corner-wrapping block 2 to swing and translate in coordination with the corner wrapping. The corner-wrapping swing arm 3 can be driven to swing by a cylinder or similar device, causing the corner-wrapping block 2 to swing and coordinate with the corner wrapping operation. In this embodiment, the corresponding edge-wrapping plate 60 can also be used to drive the swinging motion, creating a linked operation. Furthermore, different specifications of corner-wrapping blocks 2 can be replaced as needed.

[0039] In addition, the support base 4 is configured on the transverse track 40 so that the support base 4 can be adjusted to the left and right lateral positions along the transverse track 40 to meet the corner wrapping requirements of cardboard with different left and right lateral specifications or rounded corner positions; the transverse track 40 can be a slide rail with an inverted trapezoidal cross section; the corner wrapping swing arm 3 is hinged to the support base 4 via a pivot 41, the center of the pivot 41 is the hinge axis, and the pivot 41 is vertically arranged to form a vertical hinge axis structure. In addition, the support base 4 is also provided with an upper limit plate 42 and a lower limit plate 43. The corner wrapping swing arm 3 has a sliding part (such as the flat arm area on the corner wrapping swing arm 3), which is slidably configured between the upper limit plate 42 and the lower limit plate 43, so that the corner wrapping swing arm 3 slides between the upper limit plate 42 and the lower limit plate 43 during the swinging process. The upper limit plate 42 and the lower limit plate 43 cooperate to limit the movement, making the corner wrapping swing arm 3 run more stably, stable during the corner wrapping process, not easy to shake, and with higher corner wrapping quality. The corner arm 3 can be a straight arm or an obtuse-angled L-shaped arm. The corner block 2 is installed at one end of the corner arm 3, and the other end of the corner arm 3 is a hinge axis (such as hinged to the support base 4). The corner block 2 can be made of copper, and the upper limit plate 42 and the lower limit plate 43 can be made of copper plates.

[0040] In this design, the hinge axis of the corner-wrapping arm 3 is located relatively inside, while the corner-wrapping block 2 is located relatively outside. For example, the corner-wrapping block 2 corresponding to the left rounded corner of the cardboard is relatively outward (relatively on the left), and the hinge axis of the left corner-wrapping arm 3 corresponding to the left corner-wrapping block 2 is relatively inward (relatively on the right); similarly, the corner-wrapping block 2 corresponding to the right rounded corner of the cardboard is relatively outward (relatively on the right), and the hinge axis of the right corner-wrapping arm 3 corresponding to the right corner-wrapping block 2 is relatively inward (relatively on the left). The corner-wrapping block 2 moves from the outside to the inside (e.g., swings) to coordinate with the corner-wrapping operation. For instance, two corner-wrapping devices 1 are configured on the horizontal track 40, with the two corner-wrapping devices 1 arranged in a mirror image, enabling corresponding corner-wrapping treatment of the rounded corners at both ends of the same side of the cardboard. The corresponding corner-wrapping devices 1 can also adjust their relative left and right positions on the horizontal track 40 to meet the corner-wrapping requirements of cardboard with different left and right horizontal specifications or rounded corner positions. The hinge axes of the two corner-wrapping devices 1 are relatively centered and inward, while the corner-wrapping blocks 2 of the two corner-wrapping devices 1 are relatively outward.

[0041] In addition, the area above corner block 2 is where the cardboard is placed from top to bottom. That is, the cardboard to be processed (with the face paper already pasted on the bottom side) is placed into the cardboard edge-wrapping mechanism from top to bottom. The face paper part (such as having three corner claws) is folded upward by corner block 2, and the process is completed step by step. For example, a robotic arm with a lifting suction nozzle (such as an air nozzle) is used to place the cardboard into the cardboard edge-wrapping mechanism from top to bottom for processing.

[0042] For example, the support base 4 is also provided with an upper hinge base 44 and a lower hinge base 45. Bearings are respectively provided on the upper hinge base 44 and the lower hinge base 45 for connecting to the rotating shaft 41, so that the corner swing arm 3 installed and connected to the rotating shaft 41 can swing. As another example, the corner swing arm 3 has a locking hole 30 and a locking groove 31. The locking groove 31 communicates with the locking hole 30. The locking hole 30 is fitted on the rotating shaft 41. The corner swing arm 3 also has a mounting hole 32 for fasteners (such as bolts) to assemble and connect. The fasteners (such as bolts) are used to adjust the size of the locking groove 31, so that the locking hole 30 becomes smaller or larger, so that the corner swing arm 3 can be fixed and loosened with the rotating shaft 41, thereby allowing the replacement of corner swing arms 3 of different specifications.

[0043] In addition, the edge-binding mechanism has an edge-binding device 6, which includes an edge-binding plate 60. The edge-binding plate 60 is disposed on a longitudinal track 61 and can move back and forth on the longitudinal track 61. The edge-binding plate 60 is driven by an edge-binding drive component (not shown in the figure, such as a cylinder or motor) which drives the edge-binding plate 60 to move back and forth. The edge-binding plate 60 binds one edge of the cardboard with face paper, which is a mature technology. In this embodiment, the corner block 2 is located on the side where the edge-binding plate 60 moves longitudinally for edge-binding. The edge-binding plate 60 and the corner block 2 are driven together, that is, the edge-binding plate 60 moves longitudinally for edge-binding. During the edging process, the edging plate 60 will drive the corner block 2 on the corner swing arm 3 to move, causing the corner swing arm 3 to swing as well. The edging plate 60 pushes the corner block 2 to perform corner edging. The corner block 2 swings (moves) from the outside to the inside to cooperate with the corner edging. The corner block 2 is also connected to a return spring 11, which is installed on the support base 4. The return spring 11 drives the corner swing arm 3 to swing back. During the forward edging process of the edging plate 60, it can swing (move) the corner block 2 from the outside to the inside to cooperate with the corner edging. After completion, the edging plate 60 retracts longitudinally, and the return spring 11 can make the corner block 2 return to its original position to wait for the next corner edging operation. For example, the return spring 11 is a tension spring, with one end connected to the corner swing arm 3 and the other end connected to the support base 4.

[0044] For example, the edge-binding device 6 is set on the support plate 7, and its position can be adjusted (front and back) as the support plate 7 is installed;

[0045] The edge banding plate 60 is located on the upper side of the support plate 7, and the longitudinal track 61 is installed on the support plate 7. The edge banding plate 60 will move back and forth along the longitudinal track 61 on the upper side of the support plate 7.

[0046] The upper side of the edge banding plate 60 is provided with a mounting bracket 46. The mounting bracket 46 (such as a mounting plate) is connected to the support plate 7. The mounting bracket 46 is relatively fixed on the support plate 7 and does not affect the normal forward and backward movement of the edge banding plate 60. The support base 4 is set on the mounting bracket 46, and the corner swing arm 3 is set above the edge banding plate 60, which facilitates the assembly of the support base 4, the corner swing arm 3, etc., and does not affect the operation of the edge banding plate 60. In addition, the corner swing arm 3 can be located on the upper side of the mounting bracket 46.

[0047] The underside of the edge-binding plate 60 is provided with a support plate 62 to support the cardboard to be processed (such as a shell to be processed placed from top to bottom). The support plate 62 is mounted on the support plate 7. The corner-wrapping block 2 is arranged above the support plate 62 and can cooperate to wrap the face paper on the supported cardboard accordingly.

[0048] The corner-pushing part 27 and the paper tray 62 have a gap for accommodating the paper, allowing the corner-pushing part 27 to firmly push the paper onto the upper side of the paper tray. The edge-binding plate 60 has a gap between the lower side of the edge-binding operation part and the paper tray 62, allowing the edge-binding plate 60 to tightly fit the edge.

[0049] The mounting bracket 46 is provided with a transverse track 40 for adjusting the position of the support base 4 to the left and right.

[0050] Furthermore, the tray 62 can be a longitudinally telescopic tray 62, equipped with a longitudinal movement drive component (not shown in the figure, such as a cylinder). The tray 62 is connected to the longitudinal movement drive component, driving the tray 62 to move longitudinally telescopically. When extended, it can help support the cardboard for corner and edge wrapping of the casing; when retracted, it allows the cardboard to move downwards for output. Of course, other non-telescopic methods can also be used, such as suctioning the processed cardboard casing from above to remove it, freeing up space on the tray 62.

[0051] The corner block 2 has a concave, rounded corner surface 24 on its front side and a transmission mating part 25 on its back side (for mating with the edge plate 60). A protective pad (not shown, such as a rubber pad) is provided at the transmission mating part 25, and an outer shell (not shown, such as a stainless steel shell) is provided outside the protective pad. This design reduces noise during transmission between the edge plate 60 and the corner block 2 and also extends the service life. The outer shell can be fixed to the back side of the corner block 2 by fasteners (such as screws), and the protective pad can be clamped to the back side of the corner block 2 by the outer shell. A connecting hole 26 is provided on the corner block 2 for fastener installation.

[0052] The three-stage folded edge step 20 includes a first folded edge step 21, a second folded edge step 22, and a third folded edge step 23, which are arranged sequentially and decrease or increase in level by level. For example, the corner block 2 and the edge plate 60 are kept in a close contact state. The return spring 11 keeps the corner block 2 and the edge plate 60 in a close contact state, avoiding noise and impact during transmission, which could lead to instability and affect service life.

Claims

1. A leather casing edge-wrapping mechanism with rounded corners, including a corner-wrapping device (1), the corner-wrapping device (1) including a corner-wrapping block (2). The corner block (2) has a concave corner arc surface (24), the cross-section of which is an arc shape, characterized in that: The corner block (2) is provided with a three-level folded edge step (20), which is connected to the upper end of the corner arc concave surface (24). The three-level folded edge step (20) is set facing upwards. The bottom of the corner block (2) is the corner flat push part (27), which is connected to the lower end of the corner arc concave surface (24).

2. The rounded and beaded shell edging mechanism of claim 1, wherein: The corner block (2) is connected to a corner transmission component.

3. The rounded and beaded shell edging mechanism of claim 1, wherein: The corner-covering device (1) also includes a corner-covering swing arm (3), and the corner-covering block (2) is installed on the corner-covering swing arm (3); The corner-wrapping device (1) also includes a support base (4), and the corner-wrapping swing arm (3) is hinged on the support base (4). The hinge axis of the corner-wrapping swing arm (3) on the support base (4) is set vertically.

4. The casing edge-wrapping mechanism with rounded corners as described in claim 3, characterized in that: The support base (4) is mounted on the transverse track (40), and the corner swing arm (3) is hinged to the support base (4) via a pivot (41). The pivot (41) is vertically positioned, and its center is the hinge axis. The support base (4) is also provided with an upper limit plate (42) and a lower limit plate (43). The corner arm (3) has a sliding part, which is slidably disposed between the upper limit plate (42) and the lower limit plate (43).

5. The casing edge-wrapping mechanism with rounded corners as described in claim 3, characterized in that: The hinge axes are located on the inner side, and the corner blocks (2) are located on the outer side. Corner block (2) moves from the outside to the inside to coordinate with the corner movement. The top of the corner piece (2) is where the outer shell is placed from top to bottom.

6. The casing edge-wrapping mechanism with rounded corners as described in claim 4, characterized in that: The support base (4) is also provided with an upper hinge base (44) and a lower hinge base (45). Bearings are respectively provided on the upper hinge seat (44) and the lower hinge seat (45) for connecting the rotating shaft (41). The corner arm (3) has a locking hole (30) and a locking groove (31). The locking groove (31) is connected to the locking hole (30). The locking hole (30) is fitted on the rotating shaft (41). The corner arm (3) also has a mounting hole (32) for fastener assembly connection to match the size of the locking groove (31). Two corner protection devices (1) are configured on the horizontal track (40), and the two corner protection devices (1) are set in a mirror image on the left and right sides; The hinge axes of the left and right corner devices (1) are respectively centered and inward relative to each other. The left and right corner devices (1) have their respective corner blocks (2) which are positioned opposite each other and outwards.

7. The casing edge-wrapping mechanism with rounded corners as described in claim 3, characterized in that: The leather casing edge-binding mechanism has an edge-binding device (6), which includes an edge-binding plate (60). The edge-binding plate (60) is arranged on a longitudinal track (61), and the edge-binding plate (60) is drivenly connected to an edge-binding drive component. The corner block (2) is located on one side of the edge-sealing plate (60) as it moves longitudinally forward to seal the edge. The edge-sealing plate (60) and the corner block (2) are connected by a transmission mechanism. The edge-sealing plate (60) pushes the corner block (2) to seal the corner. The corner block (2) is also connected to a return spring (11), which is installed on the support base (4).

8. The rounded and beaded shell edging mechanism of claim 7, wherein: The edging device (6) is mounted on the support plate (7), the edging plate (60) is located on the upper side of the support plate (7), and the longitudinal track (61) is mounted on the support plate (7). A mounting bracket (46) is provided on the upper side of the edge banding plate (60). The mounting bracket (46) is connected to the support plate (7). The support base (4) is set on the mounting bracket (46). The corner swing arm (3) is set above the edge banding plate (60) and is located on the upper side of the mounting bracket (46). A support plate (62) is arranged on the lower side of the edge banding plate (60), the support plate (62) is mounted on the support plate (7), and the corner block (2) is arranged above the support plate (62); A gap is left between the corner pusher (27) and the tray (62) for accommodating paper. A binding gap is left between the lower side of the binding operation part of the binding plate (60) and the support plate (62); The return spring (11) is a tension spring, with one end of the tension spring connected to the corner swing arm (3) and the other end connected to the support seat (4).

9. The rounded and beaded shell edging mechanism of claim 8, wherein: The mounting bracket (46) is provided with a transverse rail (40) for adjusting the position of the support base (4) to the left and right. The tray (62) is a longitudinal telescopic tray (62), and the tray (62) is equipped with a longitudinal movement drive component, and the tray (62) is connected to the longitudinal movement drive component in a transmission connection.

10. The casing edge-wrapping mechanism with rounded corners as described in claim 7, characterized in that: The front of the corner block (2) is a concave arc surface (24), and the back of the corner block (2) is a transmission mating part (25). A protective pad is provided at the transmission mating part (25), and an outer shell is provided outside the protective pad; The three-tiered folded step (20) includes a first folded step (21), a second folded step (22), and a third folded step (23). The first folded edge step (21), the second folded edge step (22), and the third folded edge step (23) are arranged in sequence and decrease or increase step by step; The corner block (2) and the edge plate (60) remain in contact, and the return spring (11) keeps the corner block (2) and the edge plate (60) in contact.

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