Bending device for composite decorative plate of display cabinet

Abstract

The invention relates to the technical field of display cabinet composite decorative plate bending equipment, in particular to a display cabinet composite decorative plate bending device which comprises a rack, a downward pressing unit and at least one bending unit are fixed to the rack, the downward pressing unit is provided with a vertical moving end capable of moving in the vertical direction, a bending upper die is fixed to the vertical moving end, and a bending lower die is fixed to the bending upper die. The bending unit comprises a rotating mechanism, a bending lower die and two sets of positioning mechanisms. According to the bending device, through cooperation of the downward pressing unit and the bending unit, synchronous bending of the composite decorative plate is achieved, the bending efficiency and the bending precision of the bending device are guaranteed, and meanwhile continuous and attached dynamic supporting is provided for the composite decorative plate in the whole bending process through the positioning block and the abutting end.

Description

Technical Field

[0001] This invention relates to the field of bending equipment for composite decorative panels for display cabinets, and more particularly to a bending device for composite decorative panels for display cabinets. Background Technology

[0002] Display cases, widely used in commercial displays, warehousing, and home furnishings, require aesthetically pleasing designs. In recent years, the use of composite metal decorative panels for display case construction has become a mainstream trend. These panels have an attractive and functional finish material laminated to the substrate surface, offering a rich variety of colors and textures, as well as improved stain and wear resistance.

[0003] See Figure 1 As shown, this is a typical composite metal decorative panel. These panels often require bending to form the desired three-dimensional structure during production. However, existing bending equipment typically uses positioning plates to position the panels. During bending, these plates cannot accurately position the panels according to their shape, resulting in random errors in the panel's position. This causes the actual bending line to deviate from the design position, potentially placing the panel in a suboptimal stress state from the initial bending stage. Ultimately, this makes it difficult to guarantee the accuracy, straightness, and symmetry of the decorative panel, directly affecting the precision of subsequent assembly and the overall aesthetics of the product. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a bending device for composite decorative panels of display cabinets, so as to solve the problem that existing bending equipment, which usually uses a positioning plate to position the panels, cannot accurately position them according to the shape of the composite panels during bending.

[0005] To achieve the above objectives, the present invention provides a bending device for composite decorative panels in display cabinets, comprising a frame, on which a pressing unit and at least one set of bending units are fixed. The pressing unit has a vertically movable end capable of vertical movement, and a bending upper die is fixed to the vertically movable end. Each bending unit includes: a rotating mechanism fixedly connected to the frame, having a rotating platform capable of rotating about a vertical axis; a bending lower die fixedly mounted on the rotating platform, having a bending groove for accommodating the composite decorative panel; and two sets of positioning mechanisms symmetrically arranged on both sides of the bending lower die along its length direction and fixedly connected to the rotating platform. Each set of positioning mechanisms includes: a horizontal... The driving unit is fixedly connected to the rotary table and has a horizontal sliding seat that can move horizontally toward or away from the bending die. The vertical driving unit is slidably mounted on the horizontal sliding seat and has a vertical sliding seat that can move vertically. The deflection seat is rotatably mounted on the vertical sliding seat and can deflect around the horizontal axis. The positioning block is fixed on the deflection seat, and the upper end of the positioning block is provided with an abutment end for supporting the composite decorative panel during bending. The abutment end is provided with a positioning groove for positioning the composite decorative panel. During bending, the deflection seat can deflect synchronously with the composite decorative panel being bent.

[0006] In one optional example, a horizontal guide rail is fixed to the upper end of the rotary table, and the guide rail is perpendicular to the direction of the bending die. A horizontal sliding block is fixed to the lower end of the horizontal sliding seat, and the horizontal sliding block is slidably mounted on the horizontal guide rail. A horizontal lead screw is mounted on the rotary table by rotation, and the axis of the horizontal lead screw is set along the direction of the horizontal guide rail. A horizontal motor is fixed to the rotary table in a direction away from the bending die, and the output shaft of the horizontal motor is fixedly connected to the horizontal lead screw and used to drive the rotation of the horizontal lead screw. A horizontal drive nut is fixed to the lower end of the horizontal sliding block, and the horizontal drive nut is drivenly connected to the horizontal lead screw by a threaded connection.

[0007] In an optional example, the horizontal sliding seat is provided with a vertical sliding groove, and the lower end of the vertical sliding seat is provided with a vertical guide rod that matches the vertical sliding groove. The vertical guide rod is slidably inserted into the vertical sliding groove. A vertical driving assembly is fixed on the horizontal sliding seat. The vertical driving assembly has a vertical driving end that can move vertically, and the vertical driving end is drivenly connected to the vertical sliding seat.

[0008] In an optional example, the vertical drive assembly includes a horizontal telescopic cylinder arranged in the horizontal direction, the upper end of the horizontal sliding seat is provided with a horizontal mounting groove, the vertical drive end includes a horizontal wedge, the horizontal wedge is slidably installed in the horizontal mounting groove and can move toward or away from the bending die, the lower end of the vertical sliding seat is fixed with a driven wedge that matches the horizontal wedge, the telescopic end of the horizontal telescopic cylinder is fixedly connected to the horizontal wedge and drives the horizontal wedge to move, so that the driven wedge moves vertically.

[0009] In one optional example, a rotating shaft is fixed to one side of the vertical sliding seat, and a drive shaft is fixed to the other side of the vertical sliding seat. A rotating hole matching the rotating shaft is provided on one side of the deflection seat, and a drive hole matching the drive shaft is provided on the other side of the deflection seat. A worm gear is provided at the end of the drive shaft that faces away from the vertical sliding seat. A rotary drive assembly is fixed on the vertical sliding seat, and the rotary drive assembly is used to drive the worm gear to rotate.

[0010] In an optional example, the upper end of the vertical sliding seat is provided with a vertical groove, and a first side through hole is provided on one side of the vertical sliding seat, which extends into the vertical groove. The rotating shaft is inserted into the first side through hole by means of a threaded connection, and a rotating part is provided on the rotating shaft, which is inserted into the rotating hole.

[0011] In an optional example, the other side of the vertical sliding seat has a second side through hole that extends into the vertical groove. The drive shaft is inserted into the second side through hole by rotation. The drive shaft is provided with a drive key, which is inserted into the drive hole by key connection. The end of the drive shaft facing away from the worm gear is provided with a drive thread, and a limit nut is fixed on the outer wall of the drive thread by thread connection.

[0012] In an optional example, the rotary drive assembly includes a worm and a rotary motor. The worm is rotated and connected to a vertical sliding seat. The rotary motor is fixedly connected to the vertical sliding seat. The output shaft of the rotary motor is fixedly connected to the worm and is used to drive the rotation of the worm. The worm meshes with a worm wheel.

[0013] In an optional example, the upper end of the contact end is provided with an upper groove, and a connecting bolt for fixed connection with the deflection seat is fixed in the upper groove.

[0014] In an optional example, the pressing unit includes a pressing bracket, which is fixedly connected to the frame. A pressing guide rail is mounted on the pressing bracket and arranged vertically. The vertical moving end includes a vertical moving bracket, on which a vertical moving slider is fixed. The vertical moving slider is connected to the pressing guide rail by sliding. A pressing telescopic cylinder is fixed on the pressing bracket, and the telescopic end of the pressing telescopic cylinder is fixedly connected to the vertical moving bracket. An upper die mounting groove is provided on the vertical moving bracket, and the bending upper die is inserted and fixed in the upper die mounting groove.

[0015] The beneficial effects of this invention are that the synchronous bending of composite decorative panels is achieved through the cooperation of the pressing unit and the bending unit, ensuring the bending efficiency and accuracy of the bending device. Furthermore, the rotating mechanism allows the bending die to change its angle, and the horizontal and vertical driving parts can flexibly adjust the position of the positioning blocks according to the thickness and size of different panels, enabling the processing of composite decorative panels of different specifications and processing angles. At the same time, by setting up positioning blocks that can be dynamically deflected and their contact ends, continuous and close dynamic support is provided for the composite decorative panels throughout the bending process, effectively avoiding quality problems such as cracking, chipping, or detachment of the decorative layer from the substrate caused by the lack of support below when bending the composite decorative panels. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the composite decorative panel. Figure 2 This is a front view of an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the bending unit in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the positioning mechanism in an embodiment of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the positioning mechanism in an embodiment of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the exploded structure of the positioning mechanism in an embodiment of the present invention. Figure 2 ; Figure 8 This is a three-dimensional structural diagram of the pressing unit in an embodiment of the present invention; Figure 9 This is a usage state diagram of an embodiment of the present invention.

[0018] The diagram is labeled as follows: 1. Frame; 2. Pressing unit; 21. Vertical moving end; 211. Upper die mounting slot; 22. Pressing bracket; 23. Pressing guide rail; 24. Vertical moving slider; 25. Pressing telescopic cylinder; 3. Bending unit; 4. Bending upper die; 5. Rotating mechanism; 51. Rotary table; 6. Bending lower die; 61. Bending groove; 7. Positioning mechanism; 71. Horizontal sliding seat; 711. Vertical sliding groove; 712. Horizontal mounting slot; 72. Vertical sliding seat; 721. Vertical guide rod; 722. Rotating shaft; 7221. Rotating part; 723. Drive shaft; 7231. Worm gear; 7232. Drive key; 7233. Drive 724. Threaded part; 7241. Vertical groove; 7242. First side through hole; 7243. Second side through hole; 725. Limit nut; 73. Deflection seat; 731. Rotation hole; 732. Drive hole; 74. Positioning block; 741. Abutting end; 742. Positioning groove; 743. Upper groove; 744. Connecting bolt; 751. Horizontal guide rail; 752. Horizontal sliding block; 753. Horizontal lead screw; 754. Horizontal motor; 755. Horizontal drive nut; 756. Horizontal telescopic cylinder; 757. Horizontal wedge; 758. Driven wedge; 76. Worm; 77. Rotary motor; 78. Driven gear; 79. Drive gear. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In one embodiment, please refer to Figures 2 to 4As shown, the present invention provides a bending device for composite decorative panels of display cabinets, including a frame 1. A pressing unit 2 and at least one set of bending units 3 are fixed on the frame 1. The pressing unit 2 has a vertically movable end 21 that can move vertically. A bending upper die 4 is fixed to the vertically movable end 21 by bolts. The bottom of the bending upper die 4 is the pressing surface.

[0022] The bending unit 3 includes a rotating mechanism 5, a lower bending die 6, and two sets of positioning mechanisms 7.

[0023] The rotating mechanism 5 is fixedly connected to the frame 1 by bolts and has a rotary table 51 capable of rotating around a vertical axis. The rotating mechanism 5 has a drive motor, which drives the rotary table 51 to be adjusted within a set range. This design allows the lower bending die 6 to adjust its angle according to process requirements, realizing multi-angle bending, expanding the application range of the bending device, and ensuring the bending accuracy of the bending device.

[0024] The lower bending die 6 is fixedly installed on the rotary table 51 by bolt connection, and has a bending groove 61 for accommodating the composite decorative panel.

[0025] Two sets of positioning mechanisms 7 are symmetrically arranged on both sides of the bending lower die 6 along its length and are fixedly connected to the rotary table 51. Among them, the positioning mechanism 7 can position the ends of the composite decorative panel.

[0026] Each positioning mechanism 7 includes a horizontal drive unit, a vertical drive unit, a deflection seat 73, and a positioning block 74.

[0027] The horizontal drive unit is fixedly connected to the rotary table 51 by bolts, and has a horizontal sliding seat 71 that can move horizontally toward or away from the lower bending die 6.

[0028] The vertical drive unit is mounted on the horizontal slide seat 71 by means of sliding, and has a vertical slide seat 72 that can move vertically.

[0029] The deflector seat 73 is mounted on the vertical sliding seat 72 by rotation and can deflect around the horizontal axis. The positioning block 74 is fixed on the deflection seat 73. The upper end of the positioning block 74 is provided with an abutment end 741 for supporting the lower edge of the composite decorative panel during the bending process. The abutment end 741 is provided with a positioning groove 742 for positioning the end of the composite decorative panel in the initial stage of bending. During the bending process, the deflection seat 73 can deflect synchronously with the composite decorative panel being bent.

[0030] Working principle: Step 1: According to the bending angle requirements of the board, adjust the angle of the bending lower die 6 through the rotating mechanism 5, place the composite decorative board flat on the bending lower die 6, align the position to be bent with the bending groove 61, drive the horizontal drive part and the vertical drive part of the two sets of positioning mechanisms 7 to move the positioning block 74 to the appropriate position, and manually insert both ends of the board into the positioning grooves 742 on both sides to achieve precise positioning. Step 2: Start the pressing unit 2, and the vertical moving end 21 drives the bending upper die 4 to move down until it is flatly pressed against the upper surface of the composite decorative board; Step 3: The horizontal drive unit moves, causing the horizontal sliding seat 71 and above to move a short set distance away from the side of the board, so that the end of the board is separated from the positioning groove 742, releasing the constraint on the board along the length direction. Then, the vertical drive unit moves, driving the vertical sliding seat 72 to move downward until the contact end 741 of the positioning block 74 rises to a position that gently abuts against the lower edge of the composite decorative board. Step 4: The pressing unit 2 continues to apply pressure, and the bending upper die 4 forces the middle part of the sheet into the bending groove 61. The sheet begins to undergo plastic bending. During this process, the lower edge of the sheet will press against the contact end 741, and the deflection seat 73 will deflect synchronously, thus providing a close support force for the lower edge of the sheet throughout the bending process, preventing the decorative layer from cracking or wrinkling due to suspension or pulling. Step 5: After bending to the correct position and holding the pressure for a moment, the lower pressing unit 2 drives the upper bending die 4 to rise. Then, the vertical drive unit and the horizontal drive unit move in sequence, driving the positioning block 74 to descend and move horizontally back to the initial position. The deflection seat 73 returns to the center, and the processed workpiece is taken out, completing one cycle.

[0031] Specifically, this example achieves synchronous bending of composite decorative panels through the cooperation of the pressing unit 2 and the bending unit 3, ensuring the bending efficiency and accuracy of the bending device. Furthermore, the rotating mechanism 5 allows the bending die 6 to change its angle. The horizontal and vertical driving parts can flexibly adjust the position of the positioning block 74 according to the thickness and size of different panels, enabling the processing of composite decorative panels of different specifications and processing angles. At the same time, by setting the positioning block 74 and its contact end 741 that can be dynamically deflected, continuous and close dynamic support is provided for the composite decorative panels throughout the bending process, effectively avoiding quality problems such as cracking, chipping, or detachment of the decorative layer from the substrate caused by the lack of support below when bending the composite decorative panels.

[0032] In an optional example, please refer to Figures 2 to 7As shown, a horizontal guide rail 751 is fixed to the upper end of the rotary table 51 by bolts. The guide rail 751 is perpendicular to the direction of the bending die 6. A horizontal sliding block 752 is fixed to the lower end of the horizontal sliding seat 71 by bolts. The horizontal sliding block 752 is slidably fitted onto the outer wall of the horizontal guide rail 751. A horizontal lead screw 753 is installed on the rotary table 51 by bearings. The axis of the horizontal lead screw 753 is set along the direction of the horizontal guide rail 751. A horizontal motor 754 is fixed to the rotary table 51 in a direction away from the bending die 6 by bolts. The output shaft of the horizontal motor 754 is fixedly connected to the horizontal lead screw 753 by a coupling and is used to drive the rotation of the horizontal lead screw 753. A horizontal drive nut 755 is fixed to the lower end of the horizontal sliding block 752. The horizontal drive nut 755 is drivenly connected to the horizontal lead screw 753 by threaded connection.

[0033] Specifically, this example achieves high-precision movement of the horizontal sliding seat 71 through the cooperation of the horizontal lead screw 753 and the horizontal drive nut 755, ensuring the positioning accuracy of the composite decorative panel. At the same time, the core linear motion components such as the horizontal guide rail 751 and the horizontal lead screw 753 are directly integrated and fixed on the rotary table 51, resulting in a compact structure with good overall rigidity. This structure can withstand the lateral forces that may be generated during bending, ensuring the stability of the positioning mechanism 7 during dynamic bending.

[0034] In an optional example, please refer to Figures 2 to 7 As shown, a vertical sliding groove 711 is provided on the horizontal sliding seat 71, and a vertical guide rod 721 matching the vertical sliding groove 711 is provided at the lower end of the vertical sliding seat 72. The vertical guide rod 721 is slidably inserted into the vertical sliding groove 711. A vertical drive assembly is fixed on the horizontal sliding seat 71. The vertical drive assembly has a vertical drive end that can move vertically, and the vertical drive end is drivenly connected to the vertical sliding seat 72.

[0035] Specifically, this example provides a stable linear guide for the vertical sliding seat 72 through the precise sliding engagement of the vertical guide rod 721 and the vertical sliding groove 711, ensuring the accuracy of the positioning block 74 in the vertical direction and guaranteeing support for the composite decorative panel during bending. At the same time, the vertical sliding groove 711 and the drive component are directly integrated into the horizontal sliding seat 71, reducing the volume and number of components of the positioning mechanism 7, making the positioning mechanism 7 more compact. Furthermore, the engagement structure of the vertical guide rod 721 and the vertical sliding groove 711 can withstand the lateral and torsional forces that the positioning block 74 may experience from the panel during bending, ensuring the rigidity and stability of the positioning mechanism 7 during dynamic processes and preventing the positioning block 74 from shifting.

[0036] In an optional example, please refer to Figures 2 to 7As shown, the vertical drive assembly includes a horizontal telescopic cylinder 756 arranged in the horizontal direction. The horizontal telescopic cylinder 756 is fixedly connected to a horizontal sliding seat 71 by bolts. The upper end of the horizontal sliding seat 71 has a horizontal mounting groove 712. The vertical drive end includes a horizontal wedge 757, which is slidably installed in the horizontal mounting groove 712 and can move toward or away from the bending lower die 6. The lower end of the vertical sliding seat 72 is fixedly connected to a driven wedge 758 that matches the horizontal wedge 757 by bolts. The telescopic end of the horizontal telescopic cylinder 756 is fixedly connected to the horizontal wedge 757 by bolts and drives the horizontal wedge 757 to move, causing the driven wedge 758 to move vertically. When the horizontal telescopic cylinder 756 pushes the horizontal wedge 757 to move, the horizontal movement of the horizontal wedge 757 is converted into the vertical movement of the driven wedge 758 through the interaction between its inclined surface and the inclined surface of the driven wedge 758.

[0037] Specifically, in this example, the horizontal telescopic cylinder 756 is arranged horizontally, and the horizontal wedge 757 and the driven wedge 758 are used to change the direction of movement, which reduces the height and space occupied by the entire vertical drive component in the vertical direction, making the positioning mechanism 7 more compact. Furthermore, the surface contact transmission between the horizontal wedge 757 and the driven wedge 758 has good rigidity, strong resistance to lateral forces, and smooth transmission without impact, which is beneficial to improving positioning accuracy and the stability of the bending process.

[0038] In an optional example, please refer to Figures 2 to 7 As shown, a rotating shaft 722 is fixed on one side of the vertical sliding seat 72, and a drive shaft 723 is fixed on the other side of the vertical sliding seat 72. A rotating hole 731 matching the rotating shaft 722 is provided on one side of the deflection seat 73, and a drive hole 732 matching the drive shaft 723 is provided on the other side of the deflection seat 73. A worm gear 7231 is provided at the end of the drive shaft 723 that faces away from the vertical sliding seat 72. A rotary drive assembly is fixed on the vertical sliding seat 72, and the rotary drive assembly is used to drive the worm gear 7231 to rotate.

[0039] Specifically, in this example, the rotating shaft 722 and the drive shaft 723 provide support on both sides of the deflection seat 73, forming a stable support structure. This prevents the deflection seat 73 from swaying or jamming when subjected to force, ensuring the stability of the deflection seat 73 during rotation. Furthermore, through the rotation drive assembly and the worm gear 7231, precise adjustment and control of the small angle of the deflection seat 73 can be achieved. The worm gear 7231 mechanism has a self-locking characteristic, which prevents the deflection seat 73 from accidentally reversing under external force, ensuring the stability of the follow-up support during bending and also ensuring safety during non-working periods.

[0040] In an optional example, please refer to Figures 2 to 7As shown, a vertical groove 724 is provided at the upper end of the vertical sliding seat 72, and a first side through hole 7241 is provided on one side of the vertical sliding seat 72, which extends into the vertical groove 724. The rotating shaft 722 is inserted into the first side through hole 7241 by means of threaded connection. A rotating part 7221 is provided on the rotating shaft 722, and the rotating part 7221 is inserted into the rotating hole 731.

[0041] Specifically, the rotating shaft 722 in this example uses a threaded connection, which eliminates the need for additional complex fasteners and makes disassembly and maintenance convenient.

[0042] In an optional example, please refer to Figures 2 to 7 As shown, a second side through hole 7242 extending into the vertical groove 724 is provided on the other side of the vertical sliding seat 72. The drive shaft 723 is inserted into the second side through hole 7242 by rotation. The drive shaft 723 is provided with a drive key 7232, which is inserted into the drive hole 732 by key connection. The end of the drive shaft 723 facing away from the worm gear 7231 is provided with a drive thread 7233. A limit nut 725 is fixed on the outer wall of the drive thread 7233 by thread connection. The drive shaft 723 is provided with a drive groove that matches the drive hole 732, and a drive protrusion that matches the drive groove is provided in the drive hole 732. The drive thread 7233, drive key 7232, worm gear 7231 and drive shaft 723 are integrally machined.

[0043] Specifically, this example facilitates the quick installation of the drive shaft 723 and the disassembly and maintenance of the positioning mechanism 7 by machining a drive thread 7233 and a drive key 7232 on the drive shaft 723.

[0044] In an optional example, please refer to Figures 2 to 7 As shown, the rotary drive assembly includes a worm gear 76 and a rotary motor 77. The worm gear 76 is rotatably connected to a vertical sliding seat 72, and the rotary motor 77 is fixedly connected to the vertical sliding seat 72 by bolts. A drive gear 78 is fixed on the output shaft of the rotary motor 77, and a driven gear 79 is fixed to the end of the worm gear 76. The driven gear 78 meshes with the drive gear 79, and the worm gear 76 meshes with a worm wheel 7231. The vertical sliding seat 72 has a rod groove, and a shaft groove is formed within the rod groove. The worm gear 76 is rotatably inserted into the shaft groove. The upper end of the rod groove is open, and the worm gear 76 is disposed within the rod groove and meshes with the worm wheel 7231.

[0045] Specifically, this example uses a rotary motor 77 to drive a drive gear 78 to rotate, which in turn drives a driven gear 79 to rotate. The driven gear 79 then drives a drive worm gear 76. The structure is compact and is fully integrated into the vertical sliding seat 72 module, resulting in high space utilization.

[0046] In an optional example, please refer to Figures 2 to 7 As shown, the upper end of the contact end 741 has an upper groove 743, and a connecting bolt 744 for fixed connection with the deflection seat 73 is fixed in the upper groove 743. The upper groove 743 has a bolt slot, and a bolt hole is formed in the bolt slot. The connecting bolt 744 passes through the bolt hole and is fixedly connected to the deflection seat 73 by means of threaded connection. The head of the connecting bolt 744 is set in the bolt slot.

[0047] Specifically, in this example, the connecting bolt 744 is directly tightened and fixed, ensuring that the positioning block 74 will not loosen or shift relative to the deflection seat 73 when subjected to continuous lateral pressure and friction of the plate during bending, thus ensuring the long-term stability of the support positioning. Furthermore, the head of the connecting bolt 744 is set in the upper groove 743, hiding the head of the connecting bolt 744, ensuring that the head of the connecting bolt 744 will not accidentally collide or scratch with the moving plate during bending, thus protecting the surface quality of the plate.

[0048] In an optional example, please refer to Figures 2 to 8 As shown, the pressing unit 2 includes a pressing bracket 22, which is fixedly connected to the frame 1 by bolts. A pressing guide rail 23 arranged vertically is fixed to the pressing bracket 22 by bolts. The vertical moving end 21 includes a vertical moving bracket, on which a vertical moving slider 24 is fixed by bolts. The vertical moving slider 24 is connected to the pressing guide rail 23 by sliding. A pressing telescopic cylinder 25 is fixed to the pressing bracket 22 by bolts. The telescopic end of the pressing telescopic cylinder 25 is fixedly connected to the vertical moving bracket by bolts. An upper mold mounting groove 211 is provided on the vertical moving bracket. The bending upper mold 4 is inserted into the upper mold mounting groove 211 and fixed by bolts.

[0049] Specifically, in this example, the lower guide rail 23 works in conjunction with the slider to ensure that the upper bending die 4 maintains vertical movement during the pressing process, without lateral offset or wobbling, thus ensuring the bending accuracy of the composite decorative panel.

[0050] In summary, this invention, through the cooperation of the pressing unit 2 and the bending unit 3, enables the processing of composite decorative panels of different specifications and processing angles. Simultaneously, by setting a positioning block 74 that can rotate dynamically and its contact end 741, continuous and close-fitting dynamic support is provided for the composite decorative panel throughout the bending process. This effectively avoids quality problems such as cracking, chipping, or detachment of the decorative layer from the substrate caused by the lack of support below during bending. Furthermore, the cooperative structure of the vertical guide rod 721 and the vertical sliding groove 711 can withstand the lateral and torsional forces that the positioning block 74 may experience from the panel during bending, ensuring the rigidity and stability of the positioning mechanism 7 during the dynamic process and preventing the positioning block 74 from shifting.

[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0052] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A display cabinet composite decorative panel bending device, comprising a rack (1), a pressing unit (2) and at least one set of bending units (3) are fixed on the rack (1), the pressing unit (2) has a vertical moving end (21) capable of moving vertically, a bending upper die (4) is fixed on the vertical moving end (21), characterized in that, The bending unit (3) comprises: A rotating mechanism (5) fixedly connected with the rack (1) and having a rotating table (51) capable of rotating around a vertical axis; A bending lower die (6) fixedly installed on the rotating table (51) and having a bending groove (61) for accommodating a composite decorative plate; Two sets of positioning mechanisms (7) symmetrically arranged on both sides of the bending lower die (6) along the length direction thereof and fixedly connected with the rotating table (51); Each set of the positioning mechanisms (7) comprises: A horizontal driving part fixedly connected with the rotating table (51) and having a horizontal sliding seat (71) capable of moving towards or away from the bending lower die (6) in a horizontal direction; A vertical driving part slidably installed on the horizontal sliding seat (71) and having a vertical sliding seat (72) capable of moving in a vertical direction; A deflection seat (73) rotatably installed on the vertical sliding seat (72) and capable of deflecting around a horizontal axis; A positioning block (74) fixed on the deflection seat (73), wherein an upper end of the positioning block (74) is provided with an abutting end (741) for supporting the composite decorative plate during the bending process, and the abutting end (741) is provided with a positioning groove (742) for positioning the composite decorative plate, and the deflection seat (73) can deflect synchronously with the composite decorative plate being bent during the bending process.

2. The display case composite trim panel bending apparatus of claim 1, wherein, An upper end of the rotating table (51) is fixedly provided with a horizontal guide rail (751) having a direction perpendicular to that of the bending lower die (6), a lower end of the horizontal sliding seat (71) is fixedly provided with a horizontal sliding block (752) slidably sleeved on the horizontal guide rail (751), the rotating table (51) is rotatably installed with a horizontal lead screw (753) having an axis arranged along the direction of the horizontal guide rail (751), the rotating table (51) is fixedly provided with a horizontal motor (754) away from the bending lower die (6), an output shaft of the horizontal motor (754) is fixedly connected with the horizontal lead screw (753) and is used to drive the rotation of the horizontal lead screw (753), and a lower end of the horizontal sliding block (752) is fixedly provided with a horizontal driving nut (755) threadedly connected with the horizontal lead screw (753).

3. The display case composite trim panel bending apparatus of claim 2, wherein, The horizontal sliding seat (71) is provided with a vertical sliding groove (711), a lower end of the vertical sliding seat (72) is provided with a vertical guide rod (721) matched with the vertical sliding groove (711), the vertical guide rod (721) is slidably inserted into the vertical sliding groove (711), and the horizontal sliding seat (71) is fixedly provided with a vertical driving assembly having a vertical driving end capable of moving in a vertical direction, and the vertical driving end is drivingly connected with the vertical sliding seat (72).

4. The display case composite trim panel bending apparatus of claim 3, wherein, The vertical driving assembly comprises a horizontal telescopic cylinder (756) arranged in a horizontal direction, a horizontal installation groove (712) is arranged in the upper end of the horizontal sliding seat (71), the vertical driving end comprises a horizontal wedge block (757), the horizontal wedge block (757) is arranged in the horizontal installation groove (712) in a sliding mode and can move towards or away from the bending lower die (6), a driven wedge block (758) matched with the horizontal wedge block (757) is fixed to the lower end of the vertical sliding seat (72), the telescopic end of the horizontal telescopic cylinder (756) is fixedly connected with the horizontal wedge block (757) and drives the horizontal wedge block (757) to move, so that the driven wedge block (758) moves vertically.

5. The display case composite trim panel bending apparatus of claim 4, wherein, One side of the vertical sliding seat (72) is fixedly provided with a rotating shaft (722), the other side of the vertical sliding seat (72) is fixedly provided with a driving shaft (723), one side of the deflection seat (73) is provided with a rotating hole (731) matched with the rotating shaft (722), the other side of the deflection seat (73) is provided with a driving hole (732) matched with the driving shaft (723), one end of the driving shaft (723) away from the vertical sliding seat (72) is provided with a worm wheel (7231), the vertical sliding seat (72) is fixedly provided with a rotating driving assembly, and the rotating driving assembly is used to drive the worm wheel (7231) to rotate.

6. The display case composite trim panel bending apparatus of claim 5, wherein, The upper end of the vertical sliding seat (72) is provided with a vertical groove (724), one side of the vertical sliding seat (72) is provided with a first side through hole (7241) penetrating into the vertical groove (724), the rotating shaft (722) is inserted into the first side through hole (7241) in a threaded connection mode, and the rotating shaft (722) is provided with a rotating part (7221) inserted into the rotating hole (731).

7. The display case composite trim panel bending apparatus of claim 6, wherein, The other side of the vertical sliding seat (72) is provided with a second side through hole (7242) penetrating into the vertical groove (724), the driving shaft (723) is inserted into the second side through hole (7242) in a rotating mode, the driving shaft (723) is provided with a driving key part (7232), the driving key part (7232) is inserted into the driving hole (732) in a key connection mode, one end of the driving shaft (723) away from the worm wheel (7231) is provided with a driving threaded part (7233), and the outer wall of the driving threaded part (7233) is fixedly provided with a limiting nut (725) in a threaded connection mode.

8. The display case composite trim panel bending apparatus of claim 5, wherein, The rotating driving assembly comprises a worm (76) and a rotating motor (77), the worm (76) is rotatably connected with the vertical sliding seat (72), the rotating motor (77) is fixedly connected with the vertical sliding seat (72), an output shaft of the rotating motor (77) is fixedly connected with the worm (76) and is used to drive the rotation of the worm (76), and the worm (76) is engaged with the worm wheel (7231).

9. The display case composite trim panel bending apparatus of claim 5, wherein, The upper end of the abutting end (741) is provided with an upper end groove (743), and a connecting bolt (744) for fixedly connecting with the deflection seat (73) is fixed in the upper end groove (743).

10. The display case composite trim panel bending apparatus of claim 1, wherein, The lower pressing unit (2) comprises a lower pressing support (22) fixedly connected with the rack (1), a lower pressing guide rail (23) vertically arranged is installed on the lower pressing support (22), the vertical moving end (21) comprises a vertical moving support, a vertical moving sliding block (24) is fixed on the vertical moving support, the vertical moving sliding block (24) is connected with the lower pressing guide rail (23) in a sliding mode, a lower pressing telescopic cylinder (25) is fixed on the lower pressing support (22), the telescopic end of the lower pressing telescopic cylinder (25) is fixedly connected with the vertical moving support, and an upper die mounting groove (211) is formed on the vertical moving support, and the bending upper die (4) is inserted and fixed in the upper die mounting groove (211).

Images