Full-automatic special-shaped plate bending machine

Abstract

The invention discloses a full-automatic special-shaped plate bending machine which comprises an upper die and a lower die which are arranged on a rack, the upper die and the lower die are matched to bend a special-shaped plate, the special-shaped plate is transversely provided with a clamping groove and longitudinally provided with a wedge block, the wedge block is clamped into the clamping groove after the side edge and the end edge of the special-shaped plate are bent, and a detachable top die is arranged at the upper end of the lower die. The top die is arranged corresponding to the wedge block when the side edge of the special-shaped plate is bent, a detachable correcting wheel is arranged at the lower end of the upper die, and the correcting wheel is arranged corresponding to the wedge block when the end edge of the special-shaped plate is bent. The T-shaped limiting rod is matched with the check block on the bracket, automatic centering or special positioning of a special plate is achieved, and pre-installation of the correcting wheel is facilitated; through the arrangement of the correcting wheel, when the end edge of the special-shaped plate is bent, the wedge block is automatically clamped into the clamping groove, manual straightening is not needed, the risks such as scratching are avoided, original necessary steps are omitted, clamping and embedding are directly achieved during bending, and the bending efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal plate bending machines, and more specifically, to a full-automatic special-shaped plate bending machine. Background Art

[0002] CNC bending machine uses the equipped mold to bend cold metal sheets into workpieces of various geometric cross-sectional shapes. It is a sheet forming machine designed for cold rolled sheet metal processing and is widely used in sheet bending processing in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles.

[0003] For example, application number CN202410470905.9 discloses a CNC bending machine, which includes a base, with hydraulic push rods fixedly installed on both sides of the base, the output shafts of the two hydraulic push rods extend to the top of the base and are fixedly installed with the same support plate, and a lower pressure plate is fixedly installed on one side of the support plate, which can press and position the metal sheet parts, so that when the metal sheet parts are bent, the problem of unstable position of the metal sheet parts can be avoided, and in actual use, metal rods or metal pipes can be bent, which can effectively improve the use range of the bending machine and reduce the use limitations of the bending machine.

[0004] Similar CNC bending machines can process plates of various types and sizes, but for a type of plate with triangular wedge-shaped clips on the corners, generally after the main plate is bent, the wedge-shaped clips are manually folded into the wedge-shaped slot on that side, so that the cut edges are completely fitted and the end faces remain flush, thus eliminating the welding step.

[0005] Although this processing method is more efficient, there are several risks in manual folding: if the edge of the plate is sharp, it is easy to scratch; if the plate is made of hard material or thicker, manual folding may be difficult and the folding quality is poor, it is easy to fold it incompletely, and the end surface flatness and fit are low; large-scale improvements to the equipment will lead to the addition of unnecessary operating steps and switching downtime, which is not worth the cost. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a fully automatic special-shaped plate bending machine to solve one or more of the above-mentioned problems.

[0007] To achieve the above object, the present invention provides the following technical solutions: A fully automatic special-shaped plate bending machine comprises an upper die and a lower die arranged on a frame, wherein the upper die and the lower die cooperate to bend the special-shaped plate, wherein a slot is horizontally provided on the special-shaped plate and a wedge is longitudinally arranged, wherein the wedge is inserted into the slot after the side and end of the special-shaped plate are bent, wherein a detachable top die is arranged at the upper end of the lower die, wherein the top die is arranged corresponding to the wedge when the side of the special-shaped plate is bent, wherein a detachable alignment wheel is arranged at the lower end of the upper die, wherein the alignment wheel is arranged corresponding to the wedge when the end of the special-shaped plate is bent, and wherein the wedge of the special-shaped plate is inserted into and fits the slot during the bending process through the top die and the alignment wheel.

[0008] Furthermore, a notch is provided at one end of the bottom of the upper mold, the alignment wheel is provided in the notch, and the bottom end of the upper mold is arranged beyond the end of the alignment wheel.

[0009] Furthermore, the alignment wheel is detachably arranged on the upper mold via an alignment rod, and the alignment rod has a backward bending structure.

[0010] Furthermore, a transverse functional groove is provided at the center of the lower mold, the top mold is detachably provided in the functional groove, the top mold is arranged beyond the top of the lower mold, and the top mold is staggered from the lower mold.

[0011] Furthermore, the two side edges and one of the end edges of the special-shaped plate are provided with bending sections, and the ends of the two side bending sections close to the end bending sections are provided with transverse grooves, and symmetrical, longitudinal wedge blocks are provided on both sides of the end bending sections, and the wedge blocks match the contour of the grooves.

[0012] Furthermore, the frame is provided with a plurality of slidable brackets, and a T-shaped limit rod is detachably and centrally provided on the frame, the lengths of both ends of the T-shaped limit rod are adjustable, and the T-shaped limit rod abuts against and limits the sliding of the brackets.

[0013] Furthermore, the frame is provided with a horizontal supporting slide rail, the supporting seat is connected to the supporting slide rail through a supporting slider, and a plurality of the supporting seats slide horizontally along the supporting slide rail.

[0014] Furthermore, the T-shaped limit rod includes a longitudinally arranged main connecting rod and two transversely arranged adjustment rods, a joint is provided at the end of the main connecting rod, symmetrical interfaces are opened at both ends of the front side of the main connecting rod, and the adjustment rod is composed of several adjustment blocks spliced ​​in sequence, and joints and interfaces are correspondingly provided at both ends of the adjustment block.

[0015] Furthermore, the adjustment rod and the supporting slide block are at the same horizontal height, and the top surface of the supporting seat is flush with the top of the lower mold.

[0016] Furthermore, a plurality of longitudinal arc-shaped grooves are formed on the top of the bracket, and blocks are correspondingly embedded in the arc-shaped grooves. The blocks are arranged beyond the top surface of the bracket, and two ends of the special-shaped plate abut against the blocks.

[0017] To sum up, the present invention has the following beneficial effects: through the T-shaped limit rod and the stop block on the bracket, automatic centering or special positioning of the special-shaped plate can be achieved, which facilitates the pre-installation of the straightening wheel; through the setting of the straightening wheel, when the end edge of the special-shaped plate is bent, the wedge block is automatically inserted into the slot without manual straightening, which not only avoids the risk of scratches, but also eliminates the originally necessary steps, and directly achieves locking during bending, which is beneficial to improving the bending efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a three-dimensional structure of an embodiment of the present invention; Figure 2 A front view of a frame in an embodiment provided by the present invention; Figure 3 A front view of an upper mold in an embodiment provided by the present invention; Figure 4 A side sectional view of an upper mold in an embodiment provided by the present invention; Figure 5 A front view of a lower mold in an embodiment provided by the present invention; Figure 6 A side sectional view of a lower mold in an embodiment provided by the present invention; Figure 7 A top view of a special-shaped plate in one embodiment of the present invention; Figure 8 A top view of a T-shaped limiting rod in an embodiment of the present invention; Fig. 9 A schematic diagram of the three-dimensional structure of a bracket in one embodiment of the present invention.

[0019] In the figure: 10, frame; 20, upper mold; 21, straightening wheel; 22, straightening rod; 30, lower mold; 31, top mold; 32, functional slot; 40, special plate; 41, slot; 42, wedge; 50, bracket; 51, supporting slide rail; 52, supporting slide block; 53, stopper; 60, T-type limit rod; 61, main connecting rod; 62, adjustment rod; 63, adjustment block. DETAILED DESCRIPTION Example

[0020] The following is combined with Figure 1-9 The present invention is described in further detail.

[0021] Fully automatic special plate 40 bending machine, such as Figure 1 As shown, based on the optimization and improvement of the existing plate bending machine body, the frame 10 is provided with rows of upper molds 20 and lower molds 30. The lower mold 30 is fixed on the machine tool workbench, and a bending groove is provided in the lower mold 30. The upper mold 20 is installed on the hydraulic lifting door. The lower end of the upper mold 20 is provided with a bending press. The sheet is placed on the lower mold 30, and the bending part of the sheet is aligned on the bending groove. The bending press of the upper mold 20 is pressed down to the surface of the sheet and continues to press down on the notch of the bending groove, so that the sheet is bent and formed as expected. For the special-shaped plate 40, not only the upper mold 20 and the lower mold 30 need to cooperate to complete the bending, but also the special structure needs to be planned and designed.

[0022] like Figure 7 As shown, the special plate 40 needs to be folded and pressed in three stages on the front, rear and right sides, once on the front and rear sides and once on the right end. A transverse slot 41 is provided on the right end of the front and rear sides of the special plate 40, and symmetrical wedges 42 are provided on the front and rear sides of the right end. The wedges 42 are arranged longitudinally with the pointed ends facing outward. The contours of the wedges 42 and the slots 41 match, that is, the wedges 42 can be completely embedded in and fit the slots 41. The front and rear sides are bent first, and the right end is bent last. The existing processing method is to bend the parts of the front and rear sides with the slots 41, and then bend the part with the wedge 42 on the right end separately, and finally fold the wedge 42 90° and embed it into the slot 41.

[0023] like Figure 5 and Figure 6 As shown, a detachable top mold 31 is provided at the upper end of the lower mold 30. The top mold 31 corresponds to the position of the wedge block 42 when the special plate 40 is bent, that is, the top mold 31 is used to bend the wedge block 42 at a larger angle when the side is bent, and staggered with the side, so as to facilitate subsequent operations. Specifically, a horizontal functional groove 32 is provided at the center of the lower mold 30, and a plurality of openings are provided in the functional groove 32. An interface is provided at the bottom of the top mold 31 to achieve detachable connection and position adjustment in a plug-in manner. The top mold 31 needs to be set beyond the top of the lower mold 30, so that the wedge block 42 will be bent more inward than the side.

[0024] like Figure 3 and Figure 4 As shown, a notch is provided at the left end of the bottom of the upper mold 20, and the notch extends all the way to the end edge. A threaded groove is provided in the notch, and the alignment wheel 21 is detachably connected to the notch through an alignment rod 22 with a thread at the end. The bottom of the upper mold 20 is arranged beyond the end of the alignment wheel 21, and the alignment rod 22 has a backward bending structure, that is, the alignment wheel 21 is arranged forwardly. With this design, when the upper mold 20 is used normally, most of the bottom is still a normal structure, and the setting of the notch will not affect the normal bending effect.

[0025] like Figure 2As shown, a horizontal support rail 51 is provided at the lower end of the frame 10, and two brackets 50 are slidably connected to the frame 10 through the support rail 51. The support rail 51 is located below the lower mold 30. The bracket 50 itself has a height, and the top surface of the bracket 50 must be flush with the top surface of the lower mold 30 in order to horizontally place the plate. Fig. 9 As shown, the top of the bracket 50 is provided with a plurality of arc-shaped grooves in the longitudinal direction, and corresponding blocks 53 are embedded in the arc-shaped grooves. The blocks 53 need to be arranged beyond the top surface of the bracket 50, and the two ends of the special plate 40 abut against the blocks 53 to complete the positioning. A column is fixedly connected to the rear end of the bracket 50, and a supporting slider 52 is fixedly provided at a reasonable position of the column. The supporting slider 52 is slidably connected to the supporting rail 51, and the front end of the bracket 50 is connected to the column through an angle bracket to enhance the structural stability. The bracket 50 can slide back and forth horizontally along the supporting rail 51.

[0026] like Figure 2 As shown, an opening is provided on the frame 10 below the supporting slide rail 51 and in the center. A T-shaped limit rod 60 is detachably installed in the center of the opening. The lengths of both ends of the T-shaped limit rod 60 are adjustable. The T-shaped limit rod 60 abuts against and limits the sliding of the bracket 50. Figure 8 As shown, the T-shaped limit rod 60 is composed of a main connecting rod 61 arranged longitudinally and two adjustment rods 62 arranged transversely. A joint is provided at the end of the main connecting rod 61, and a docking opening is provided to realize a detachable connection. Symmetrical interfaces are provided at both ends of the front side of the main connecting rod 61. The adjustment rod 62 is composed of a plurality of adjustment blocks 63 spliced ​​in sequence, and joints and interfaces are correspondingly provided at both ends of the adjustment block 63. The effective action length of the T-shaped limit rod 60 is adjusted according to the number of adjustment blocks 63, and the number of adjustment blocks 63 on both sides can be different, which is more flexible. The adjustment rod 62 is required to be at the same horizontal height as the support slider 52, so that the adjustment rod 62 can stably abut the support slider 52 and limit the sliding of the bracket 50.

[0027] Align the bending line of the side of the special plate 40 with the bending groove setting of the lower mold 30, adjust the length of the T-shaped limit rod 60, fix the two brackets 50, embed the stopper 53 on the bracket 50, and clamp the two ends of the special plate 40. There is no special requirement for the processing position of the special plate 40. It is only necessary to install the top mold 31 in the functional groove 32 of the lower mold 30 at the position of the wedge block 42 on the rear side of the special plate 40, and lift the wedge block 42. There is a gap between the wedge block 42 and the functional groove 32. This gap is the space for the upper mold 20 to press down, that is, the actual working end of the top mold 31 and the upper mold 20 are staggered, so as to ensure the larger angle bending action of the wedge block 42. The two sides of the special plate 40 are bent according to this process. The bending angle of the wedge block 42 is larger than that of the entire side, that is, the wedge block 42 is bent more inward. When the right end of the special plate 40 is bent, it is best to center it and set the two sides of the adjustment rod 62 to be equal in length. It is necessary to ensure that the distance between the block 53 embedded at the upper end of the bracket 50 and the side distance of the special plate 40 after bending is the same. Align the bending line of the end of the special plate 40 with the bending groove of the lower mold 30, and do not put the top mold 31 into the lower mold 30. The upper mold 20 is equipped with a straightening wheel 21 corresponding to the two wedges 42. The straightening wheel 21 is in the movement range of the wedge 42 when the special plate 40 is bent and can smoothly straighten the wedge 42 to both sides. The bending of the end and the embedding of the wedge 42 into the slot 41 are completed synchronously, and finally a box structure without additional welding is obtained. There is no risk of injury to workers, and special plates 40 of any thickness can be operated. The flatness and fit of the end surface are excellent. There are no unnecessary operating steps and switching downtime, which is more efficient.

[0028] It should be noted that this specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A fully automatic special-shaped plate bending machine, comprising an upper mold (20) and a lower mold (30) arranged on a frame (10), wherein the upper mold (20) and the lower mold (30) cooperate to bend a special-shaped plate (40), wherein the special-shaped plate (40) has a slot (41) arranged transversely and a wedge block (42) arranged longitudinally, and after the side and end edges of the special-shaped plate (40) are bent, the wedge block (42) is inserted into the slot (41), wherein: A detachable top die (31) is provided at the upper end of the lower die (30), and the top die (31) is arranged corresponding to the wedge block (42) when the side edge of the special-shaped plate (40) is bent. A detachable aligning wheel (21) is provided at the lower end of the upper die (20), and the aligning wheel (21) is arranged corresponding to the wedge block (42) when the end edge of the special-shaped plate (40) is bent. The wedge block (42) of the special-shaped plate (40) is inserted into and fits the slot (41) during the bending process through the top die (31) and the aligning wheel (21).

2. The fully automatic special-shaped plate bending machine according to claim 1 is characterized in that: A notch is provided at one end of the bottom of the upper mold (20), the alignment wheel (21) is arranged in the notch, and the bottom end of the upper mold (20) is arranged beyond the end of the alignment wheel (21).

3. The fully automatic special-shaped plate bending machine according to claim 1 is characterized in that: The alignment wheel (21) is detachably arranged on the upper mold (20) via an alignment rod (22), and the alignment rod (22) has a backward bending structure.

4. The fully automatic special-shaped plate bending machine according to claim 1 is characterized in that: A transverse functional groove (32) is provided at the center of the lower mold (30), and the top mold (31) is detachably provided in the functional groove (32). The top mold (31) is arranged beyond the top of the lower mold (30), and the top mold (31) is arranged staggered from the lower mold (30).

5. The fully automatic special-shaped plate bending machine according to claim 1 is characterized in that: The two side edges and one end edge of the special-shaped plate (40) are provided with bending sections, and the ends of the two side bending sections close to the end bending sections are provided with transverse slots (41), and symmetrical, longitudinal wedge blocks (42) are provided on both sides of the end bending sections, and the wedge blocks (42) match the contours of the slots (41).

6. The fully automatic special-shaped plate bending machine according to claim 1 is characterized in that: A plurality of slidable brackets (50) are provided on the frame (10), and a T-shaped limiting rod (60) is detachably and centrally provided on the frame (10), the lengths of both ends of the T-shaped limiting rod (60) being adjustable, and the T-shaped limiting rod (60) abuts against and limits the sliding of the brackets (50).

7. The fully automatic special-shaped plate bending machine according to claim 6, characterized in that: The frame (10) is provided with a horizontal supporting slide rail (51), the supporting seat (50) is connected to the supporting slide rail (51) via a supporting slider (52), and a plurality of the supporting seats (50) slide horizontally along the supporting slide rail (51).

8. The fully automatic special-shaped plate bending machine according to claim 7 is characterized in that: The T-shaped limit rod (60) comprises a main connecting rod (61) arranged longitudinally and two adjustment rods (62) arranged transversely, a joint being provided at the end of the main connecting rod (61), symmetrical interfaces being provided at both ends of the front side of the main connecting rod (61), the adjustment rod (62) being formed by sequentially splicing a plurality of adjustment blocks (63), and the two ends of the adjustment blocks (63) being provided with joints and interfaces correspondingly.

9. The fully automatic special-shaped plate bending machine according to claim 8, characterized in that: The adjustment rod (62) and the supporting slide block (52) are at the same level, and the top surface of the supporting seat (50) is flush with the top of the lower mold (30).

10. The fully automatic special-shaped plate bending machine according to claim 6, characterized in that: The top of the bracket (50) is provided with a plurality of longitudinal arc-shaped recessed grooves, and stoppers (53) are correspondingly embedded in the arc-shaped recessed grooves. The stoppers (53) are arranged beyond the top surface of the bracket (50), and both ends of the special-shaped plate (40) abut against the stoppers (53).

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