A curved door core bending device

Abstract

The present invention relates to the technical field of sheet material processing, and specifically discloses an arc door core plate bending device, comprising a plurality of equally spaced and sequentially hinged roller assemblies and a telescopic device for adjusting the hinge angles between the roller assemblies, wherein the telescopic device comprises a fixed block, a limit frame, a slider and a connecting rod, wherein the fixed block and the limit frame are both fixed at the bottom of the roller assembly, the slider is slidably connected to the limit frame, the fixed block at the bottom of each roller assembly is connected to the slider at the bottom of an adjacent roller assembly through a connecting rod, and a driving rod is connected to the fixed block and the slider at the bottom of the outermost roller assembly; compared with traditional arc mold bending and rolling arc bending methods, the present invention can control the stroke of the driving rod to change the contraction degree of the telescopic device and thus change the bending radius of the door core plate, so that the present invention can be used for processing plates with different bending radii, saving the cost of repeated mold opening, and has the characteristics of convenient operation, wide range of use and low equipment cost.

Description

Technical Field

[0001] The invention relates to the technical field of plate processing, and in particular to a plate bending device. Background Art

[0002] In order to meet the needs of some market customers, curved doors are also an indispensable product for furniture companies. However, in the production process of curved doors, the production of curved door core panels is more troublesome.

[0003] The production process of curved door core panels requires press bending. There are two main traditional bending processes. One method is to first carve a curved mold according to the required curvature, and then clamp the core panel through the mold to bend it into shape. This method is too troublesome to operate, and the curvature is not adjustable. Different curvatures require different molds, resulting in a large amount of material waste; another processing method is to use a rolling machine to roll the door core panel into a curved panel using three rollers. The rolling machine is customized and the curvature is still not adjustable. Therefore, this solution provides a device with arbitrarily adjustable curvature to achieve the bending and shaping of the core panel. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a curved door core panel bending device suitable for use with different bending panel radii.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A curved door core bending device comprises a plurality of equally spaced and sequentially hinged pressure roller assemblies and a telescopic device for adjusting the hinge angles between the pressure roller assemblies, wherein the telescopic device comprises a fixed block, a limit frame, a slider and a connecting rod, wherein the fixed block and the limit frame are both fixed at the bottom of the pressure roller assembly, the slider is slidably connected to the limit frame, the fixed block at the bottom of each pressure roller assembly is connected to the slider at the bottom of the adjacent pressure roller assembly through a connecting rod, and the fixed block and the slider at the bottom of the outermost pressure roller assembly are both connected to a driving rod.

[0007] Furthermore, the pressure roller assembly includes a lower pressure roller, an upper pressure roller and an upper pressure roller bracket, both ends of the lower pressure roller are fixed with upper pressure roller brackets, the upper pressure roller is installed on the upper pressure roller bracket, and several of the lower pressure rollers are connected by hinges to make the pressure roller assemblies hinged.

[0008] Furthermore, the diameter of the upper pressing roller is smaller than that of the lower pressing roller, and the upper pressing roller is located above the lower pressing roller.

[0009] Furthermore, the sliding direction of the slider on the limiting frame is parallel to the axis of the upper pressure roller.

[0010] Furthermore, the fixed block includes a fixed block bracket and a first optical rod with dielectric, the fixed block bracket is fixed at the bottom of the pressure roller assembly, and first shaft sleeves are fixed on both sides of the fixed block bracket, the first optical rod with dielectric is inserted in the first shaft sleeve, and the optical rod end of the first optical rod with dielectric is hinged to the connecting rod.

[0011] Furthermore, the limit frame is a rectangular frame with a rectangular through hole in the middle, and the slider includes a slider bracket and a second light-emitting rod. The slider bracket is slidably arranged in the limit frame, and second shaft sleeves are provided on both sides of the slider bracket to limit its sliding direction on the limit frame. The second light-emitting rod is inserted in the second shaft sleeve, and the light rod end of the second light-emitting rod is hinged to the connecting rod.

[0012] Furthermore, the middle parts of the two connecting rods adjacent to the two pressing roller assemblies are hinged.

[0013] Furthermore, flat grooves for hinged installation are provided at both ends and the middle of the connecting rod.

[0014] Furthermore, when the sliding block slides to the position closest to the fixed block in the limiting frame, the plurality of pressing roller assemblies are aligned horizontally.

[0015] Furthermore, there are two telescopic devices, which are respectively arranged at two ends of the bottom of the pressure roller assembly.

[0016] The present invention has the following beneficial effects:

[0017] Compared with traditional arc mold bending and rolling arc bending methods, the present invention can control the stroke of the driving rod to change the contraction degree of the telescopic device and then change the bending radius of the door core panel, so that the present invention can be used for processing panels with different bending radii, saving the cost of repeated mold opening, and has the characteristics of convenient operation, wide range of use and low equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the telescopic device;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 It is a structural schematic diagram of the present invention when a door core board blank is placed and in a flat state;

[0024] Figure 7 It is a schematic structural diagram of the present invention when a door core board blank is placed and in a bent state;

[0025] In the figure: 1, pressure roller assembly; 2, telescopic device; 3, fixed block; 4, limit frame; 5, slider; 6, connecting rod; 7, driving rod; 11, lower pressure roller; 12, upper pressure roller; 13, upper pressure roller bracket; 14, hinge; 31, fixed block bracket; 32, first light-conducting rod; 33, first shaft sleeve; 41, rectangular through hole; 51, slider bracket; 52, second light-conducting rod; 53, second shaft sleeve; 61, flat groove. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, so as to facilitate a clearer understanding of the technical ideas claimed for protection in the present invention.

[0027] like Figure 1-7 The present invention is shown as a curved door core panel bending device, including a plurality of equally spaced and sequentially hinged pressure roller assemblies 1 and a telescopic device 2 for adjusting the hinge angles between the pressure roller assemblies 1, wherein the telescopic device 2 includes a fixed block 3, a limit frame 4, a slider 5 and a connecting rod 6, wherein the fixed block 3 and the limit frame 4 are fixed at the bottom of the pressure roller assembly 1, and the slider 5 is slidably connected to the limit frame 4, and the fixed block 3 at the bottom of each pressure roller assembly 1 is connected to the slider 5 at the bottom of the adjacent pressure roller assembly 1 through the connecting rod 6, and the fixed block 3 and the slider 5 at the bottom of the outermost pressure roller assembly 1 are connected to a driving rod 7.

[0028] like Figure 4-5 As shown, both ends of the connecting rod 6 are respectively hinged to the fixed block 3 and the slider 5, so that the multiple fixed blocks 3 and the slider 5 are connected to form a telescopic connection structure similar to a scissors-type fork. Under normal conditions, the telescopic device 2 is extended to the longest position, and the pressure roller assembly 1 is in a state as shown in FIG. Figure 6 In the flat state shown in the figure, the worker places the plate to be bent in the roller assembly 1, and then connects the driving rod 7 of the present invention to the driving device, and uses the driving device to pull the outermost ends of the two driving rods 7 of the same telescopic device 2 to open the two driving rods 7, thereby driving the slider 5 to slide in the direction away from the fixed block 3. Even if the telescopic device 2 is extended or retracted, since the telescopic device 2 is arranged below the roller assembly 1 and the adjacent roller assemblies 1 are installed in a hinged manner, the whole composed of multiple roller assemblies 1 is bent downward under the telescopic drive of the telescopic device 2 to form a shape as shown in the figure. Figure 7 The plate is bent in the state shown to complete the bending process of the door core plate; after the bending is completed, the worker slides out the bent door core plate along the curling body composed of multiple roller assemblies 1, and then uses the driving equipment to reset the telescopic device 2 so that the plate can be installed and bent again.

[0029] It is worth mentioning that one edge of the plate inserted in the present invention is located at the center of the pressure roller assembly 1 close to the driving rod 7 to ensure that there is no flat edge on the edge of the bent door core board close to the driving rod 7, which is convenient for workers to take out the bent door core board from the other side.

[0030] More specifically, the driving device connected to the present invention can be a linear driving device such as a cylinder, a hydraulic cylinder, an electric telescopic rod, a ball screw pair driven by a motor, etc. The use of the above-mentioned driving devices as horizontal motion driving mechanisms are all conventional technical means. Workers use the driving equipment to drive the outermost ends of the two driving rods 7 to switch between close to or away from each other to complete the plate bending process.

[0031] Preferably, the pressure roller assembly 1 comprises a lower pressure roller 11, an upper pressure roller 12 and an upper pressure roller bracket 13, both ends of the lower pressure roller 11 are fixed with upper pressure roller brackets 13, the upper pressure roller 12 is installed on the upper pressure roller bracket 13, and a plurality of the lower pressure rollers 11 are connected by hinges 14 to make the plurality of pressure roller assemblies 1 hinged; in a single pressure roller assembly 1, the relative positions of the lower pressure roller 11 and the upper pressure roller 12 are unchanged, and the minimum distance between the two is equal to the thickness of the door core panel, that is, the upper and lower surfaces of the door core panel fed into the processing are in contact with the bottom surface of the upper pressure roller 12 and the top surface of the lower pressure roller 11 respectively; when the door core panel is bent, the lower pressure roller 11 is in contact with the lower surface of the door core panel. The door core plate is bent by applying force, while the upper pressure roller 12 limits the degree of bending of the door core plate to prevent it from being excessively protruding and breaking. A plurality of equidistant pressure roller assemblies 1 can balance the force on the door core plate to ensure that the plate can be bent into an arc surface. In addition, the fixed block 3 and the sliding block 5 on each pressure roller assembly 1 correspond in position, and the connecting rod 6 has the same size, so that when the plurality of pressure roller assemblies 1 are bent, the axis of the lower pressure roller 11 intersects with an arc on a vertical section, and the curved surface of the bent door core plate is coaxial with the center of the arc, that is, the force exerted by the upper pressure roller 12 on the door core plate is the radial force of the arc. Therefore, the door core plate will not deviate and slide out when bent.

[0032] Preferably, the upper pressing roller 12 is rotatably connected to the upper pressing roller bracket 13, so as to facilitate the delivery and removal of the door core panel.

[0033] Preferably, if Figure 3 As shown, the top of the lower pressing roller 11 has an arc surface, and hinge arms of a hinge 14 are fixed on both sides. The bottom of the lower pressing roller 11 has a plane for installing a fixed block 3 and a limiting frame 4.

[0034] Preferably, the diameter of the upper pressing roller 12 is smaller than that of the lower pressing roller 11, and the upper pressing roller 12 is located above the lower pressing roller 11. When the door core panel is bent, the axis line of the upper pressing roller 12 and the axis line of the lower pressing roller 11 in the same pressing roller assembly 1 pass through the radial line of the same curved door core panel arc surface.

[0035] Preferably, the sliding direction of the slider 5 on the limiting frame 4 is parallel to the axis of the upper pressing roller 12 .

[0036] Preferably, the fixed block 3 includes a fixed block bracket 31 and a first optical rod 32 with dielectric, the fixed block bracket 31 is fixed at the bottom of the pressure roller assembly 1, and first sleeves 33 are fixed on both sides thereof, the first optical rod 32 with dielectric is inserted into the first sleeve 33, and the optical rod end of the first optical rod 32 with dielectric is hinged to the connecting rod 6; the first optical rod 32 with dielectric is inserted into the first sleeve 33 so that the first optical rod 32 with dielectric can rotate in the first sleeve 33, so that the telescopic device 2 can drive the pressure roller assembly 1 to deflect around the hinge 14 when contracting; the optical end of the first optical rod 32 with dielectric and the connecting rod 6 limit the position of the first optical rod 32 with dielectric in the first sleeve 33, which can prevent the first optical rod 32 from escaping from the first sleeve 33.

[0037] Preferably, the limit frame 4 is a rectangular frame with a rectangular through hole 41 in the middle, and the slider 5 includes a slider bracket 51 and a second light-carrying rod 52. The slider bracket 51 is slidably arranged in the limit frame 4, and both sides thereof are provided with a second shaft sleeve 53 for limiting its sliding direction on the limit frame 4. The second light-carrying rod 52 is inserted in the second shaft sleeve 53, and the light rod end of the second light-carrying rod 52 is hinged to the connecting rod 6; similar to the installation method of the first light-carrying rod 32, the second light-carrying rod 52 is inserted into the second shaft sleeve 53 so that the second light-carrying rod 52 can rotate in the second shaft sleeve 53.

[0038] Preferably, since a fixed block 3 and a sliding block 5 are installed under each pressure roller assembly 1, the same telescopic device 2 is provided with two connecting rods 6 between two adjacent pressure roller assemblies 1, and the middle parts of the two connecting rods 6 between the two adjacent pressure roller assemblies 1 are hinged to ensure the structural stability of the present invention, thereby ensuring smooth bending processing of the door core panel.

[0039] Preferably, flat grooves 61 for hinged installation are provided at both ends and the middle part of the connecting rod 6, and the non-intermediate ends of the first optical rod with dielectric 32 and the second optical rod with dielectric 52 both have installation planes that match the flat grooves 61, and the middle parts of the flat grooves 61 of the two connecting rods 6 located between the two adjacent pressure roller assemblies 1 in the same telescopic device 2 are oriented relative to each other and fit together and are connected by a hinge axis, so that when the pressure roller assembly 1 is in a horizontal state, the axial center lines of all connecting rods 6 are in the same horizontal plane, thereby further ensuring the structural stability of the present invention.

[0040] Preferably, if Figure 2 As shown, in this embodiment, the driving rod 7 of the present invention is a rod body with the same specifications as the connecting rod 6 and hinged in the middle.

[0041] Preferably, when the slider 5 slides to the position closest to the fixed block 3 in the limit frame 4, the plurality of roller assemblies 1 are aligned horizontally, and the initial position of the slider 5 is limited by the limit frame 4, so as to avoid the driving device from misoperating and causing the plate to bend in the reverse direction and be damaged.

[0042] Preferably, there are two telescopic devices 2, which are respectively arranged at the two ends of the bottom of the pressure roller assembly 1, and the driving rod 7 is located on the same side of the pressure roller assembly 1. The limit frames 4 and fixed blocks 3 of the two telescopic devices 2 are symmetrically arranged. Workers can use driving equipment to simultaneously control the driving rods 7 connected to the two sets of telescopic devices 2 for bending. The two sets of symmetrically arranged telescopic devices 2 can increase the force on the door core panels, thereby effectively improving the quality of the bending forming of the door core panels.

[0043] Preferably, adjacent lower pressing rollers 11 are connected via two hinges 14 .

[0044] Compared with the traditional arc mold bending and rolling arc bending methods, the present invention can control the stroke of the driving rod 7 to change the contraction degree of the telescopic device 2 and then change the bending radius of the door core panel, so that the present invention can be used for processing panels with different bending radii, saving the cost of repeated mold opening, and has the characteristics of convenient operation, wide range of use and low equipment cost.

[0045] For those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and concepts described above, and all of these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A curved door core bending device, characterized in that: The invention comprises a plurality of roller assemblies (1) which are equidistantly arranged and hinged in sequence, and a telescopic device (2) for adjusting the hinge angles between the roller assemblies (1); the telescopic device (2) comprises a fixed block (3), a limiting frame (4), a sliding block (5) and a connecting rod (6); the fixed block (3) and the limiting frame (4) are both fixed at the bottom of the roller assembly (1); the sliding block (5) is slidably connected to the limiting frame (4); the fixed block (3) at the bottom of each roller assembly (1) is connected to the sliding block (5) at the bottom of the adjacent roller assembly (1) through the connecting rod (6); and the fixed block (3) and the sliding block (5) at the bottom of the outermost roller assembly (1) are both connected to a driving rod (7); The pressure roller assembly (1) comprises a lower pressure roller (11), an upper pressure roller (12) and an upper pressure roller bracket (13); the upper pressure roller bracket (13) is fixed to both ends of the lower pressure roller (11); the upper pressure roller (12) is mounted on the upper pressure roller bracket (13); a plurality of the lower pressure rollers (11) are connected via hinges (14) so ​​that the plurality of pressure roller assemblies (1) are hinged; The diameter of the upper pressing roller (12) is smaller than the diameter of the lower pressing roller (11), and the upper pressing roller (12) is located above the lower pressing roller (11); The sliding direction of the sliding block (5) on the limiting frame (4) is parallel to the axis center line of the upper pressing roller (12).

2. A curved door core bending device as claimed in claim 1, characterized in that: The fixed block (3) comprises a fixed block bracket (31) and a first optical rod (32) with dielectric, wherein the fixed block bracket (31) is fixed to the bottom of the pressure roller assembly (1), and first shaft sleeves (33) are fixed on both sides thereof, wherein the first optical rod (32) with dielectric is inserted into the first shaft sleeve (33), and the optical rod end of the first optical rod (32) with dielectric is hinged to the connecting rod (6).

3. The curved door core bending device according to claim 1, characterized in that: The limit frame (4) is a rectangular frame having a rectangular through hole (41) in the middle. The slider (5) comprises a slider bracket (51) and a second light-carrying rod (52). The slider bracket (51) is slidably arranged in the limit frame (4). Both sides of the slider bracket (51) are provided with second shaft sleeves (53) for limiting the sliding direction of the slider on the limit frame (4). The second light-carrying rod (52) is inserted into the second shaft sleeve (53). The light rod end of the second light-carrying rod (52) is hinged to the connecting rod (6).

4. The curved door core bending device according to claim 1, characterized in that: The middle parts of the two connecting rods (6) adjacent to the two pressing roller assemblies (1) are hinged.

5. A curved door core bending device as claimed in claim 4, characterized in that: The connecting rod (6) is provided with flat grooves (61) for hinged installation at both ends and in the middle.

6. The curved door core bending device according to claim 1, characterized in that: When the slide block (5) slides to the position closest to the fixed block (3) in the limiting frame (4), the plurality of pressure roller assemblies (1) are aligned horizontally.

7. A curved door core bending device according to any one of claims 1 to 6, characterized in that: There are two telescopic devices (2), which are respectively arranged at two ends of the bottom of the pressure roller assembly (1).

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