Die bending device

Abstract

The utility model discloses a die bending device which comprises a bending mechanism, and the bending mechanism is provided with a first bending part arranged on the first side face of a plate to be machined and a second bending part arranged on the second side face, opposite to the first side face, of the plate to be machined. The first bending part is provided with an inner corner part matched with the bending angle of a to-be-bent plate, the second bending part is provided with an outer corner part matched with the bending angle of the to-be-bent plate, and the outer corner part and the inner corner part can move oppositely and reversely; when the plate needs to be bent, the outer corner part and / or the inner corner part are / is made to move in the opposite directions, and the outer corner part and the inner corner part are complementary so that the plate can be bent at the corresponding angle; according to the bending device, the first bending part and the second bending part which can move oppositely and oppositely are arranged to apply force from the two side faces of the plate so as to bend the plate into a certain angle, the first bending part with the variable angle can be attached to the plate to change along with continuous change of the angle of the plate, and hard friction is not generated between the first bending part and the plate; the surface of the plate is effectively protected from being scratched; and the first bending part of which the angle cannot be changed can also rotate relative to the base where the first bending part is located, so that the effect of avoiding hard friction is achieved, and the attractive and complete appearance of the product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal processing, and particularly relates to a die bending device. Background Art

[0002] With the rapid development of lithium batteries, major automobile manufacturers and battery development manufacturers have increasingly strict requirements for the safety performance of batteries. Not only are the material selections for battery casings more stringent, but higher requirements are also placed on the processing technology of battery casings. In the prior art, the casing of a power battery is usually stamped from a material into a specified shape and size, then the stamped material is bent into a target shape, and then the weld seams formed at the ends of the material are welded to form a complete and formed power battery casing. When bending a sheet in the prior art, the sheet is usually placed on a bending jig and directly bent into shape. During this process, the jig does not change correspondingly with the bending angle of the sheet, which makes it easy for friction to occur between the jig and the sheet, leaving friction marks on the sheet and affecting the appearance of the product. Summary of the Utility Model

[0003] Aiming at the deficiencies of the above prior art, the technical problem to be solved by the utility model is: to provide a die bending device.

[0004] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a die bending device, including a bending mechanism, the bending mechanism having a first bending portion disposed at a first side of a to-be-processed sheet and a second bending portion disposed at a second side of the to-be-processed sheet opposite to the first side; the first bending portion having an inner angle portion adapted to the bending angle of the to-be-bent sheet, the second bending portion having an outer angle portion adapted to the bending angle of the to-be-bent sheet, the outer angle portion and the inner angle portion being capable of moving towards and away from each other; when it is necessary to bend the sheet, the outer angle portion and / or the inner angle portion are moved towards each other, and the outer angle portion and the inner angle portion form a complement to bend the sheet into a corresponding angle.

[0005] Further, the inner angle portion is defined as a variable-angle inner angle portion, and the angle of the variable-angle inner angle portion during sheet bending is adapted to the angle of the to-be-bent sheet.

[0006] Further, it further includes a first base, the first bending portion including a first sub-portion and a second sub-portion rotatably arranged side by side on the first base; the first sub-portion having a first shaping surface facing the first side of the to-be-processed sheet, the second sub-portion having a second shaping surface facing the first side of the to-be-processed sheet; the first shaping surface and the second shaping surface are in the same horizontal plane and adjacent to each other in the initial state, and the first shaping surface and the second shaping surface form the inner angle portion with a bendable angle;

[0007] The outer corner portion is disposed opposite to the adjacent portion of the first shaping surface and the second shaping surface. When the first bending portion moves towards the second bending portion, the second bending portion moves towards the first bending portion, or the first bending portion and the second bending portion move towards each other simultaneously, the first shaping surface and the second shaping surface can be turned towards each other along with their respective parts under the limitation of the two side surfaces of the outer corner portion when bending the sheet material, so as to fit outside the two side surfaces of the outer corner portion, thereby being complementary to the outer corner portion.

[0008] Further, a transfer seat for the first part and the second part to be transferred thereon is provided on the first base, and an arc-shaped groove for accommodating a part where the first part and the second part approach each other is provided on one side of the transfer seat facing the sheet material to be processed;

[0009] Arc-shaped seats are convexly provided on one side of the first part and the second part facing the arc-shaped groove. Both arc-shaped seats are accommodated in the arc-shaped groove and the radian is adapted to the arc-shaped groove. One side surface of the two arc-shaped seats close to each other is a first plane perpendicular to their respective shaping surfaces.

[0010] Further, the first part and the second part also each have a second plane located outside their respective arc-shaped seats, and the second plane is parallel to their respective shaping surfaces;

[0011] Two supporting portions are provided on the first base at positions opposite to the two second planes. The two supporting portions are respectively located outside the two sides of the transfer seat, and one side surface of the two supporting portions opposite to their respective second planes is defined as a third plane;

[0012] When the first planes of the first part and the second part are parallel to each other, both arc-shaped seats are completely accommodated in the arc-shaped groove, and the second planes are respectively placed on the third planes of the two supporting portions, the first shaping surface and the second shaping surface of the first part and the second part are located in the same plane, and the first part and the second part are in an initial state; when the two arc-shaped seats rotate outwards respectively, causing the first shaping surface and the second shaping surface to be respectively attached to the two side surfaces of the outer corner portion to form a corresponding included angle adapted to the bending angle, causing the two first planes to form the corresponding included angle, and causing the two second planes to form the corresponding included angle with their respective third planes, the first part and the second part are in a working state of bending the sheet material.

[0013] Further, the transfer seat is slidably arranged inside the two supporting seats along the moving direction of the first bending portion and the second bending portion. A reset assembly is provided between the transfer seat and the first base. The reset assembly is used to drive the transfer seat to move back to its original position, and the reset assembly includes a plurality of first elastic members.

[0014] Further, the arc-shaped groove includes a first arc-shaped groove and a second arc-shaped groove that are spaced apart from each other and arranged side by side. One side of the first arc-shaped groove and the second arc-shaped groove that are adjacent to each other is separated by a separating portion. A relief groove is provided at a position on the separating portion facing the outer corner portion. The two side surfaces of the separating portion facing the first arc-shaped groove and the second arc-shaped groove are respectively defined as the inner groove walls of the first arc-shaped groove and the second arc-shaped groove. The height of the inner groove walls is lower than the height of the outer side walls of the first arc-shaped groove and the second arc-shaped groove. The arc-shaped seats of the first part and the second part are respectively arranged in the first arc-shaped groove and the second arc-shaped groove.

[0015] Further, the first part and the second part also each have a second plane located outside their respective arc-shaped seats, and the second plane is parallel to their respective shaping surfaces;

[0016] The outer groove walls of the first arc-shaped groove and the second arc-shaped groove are defined as two supporting portions for supporting the second planes. One side surface of the two supporting portions facing their respective second planes is defined as a third plane;

[0017] When the second planes of the first part and the second part are respectively placed flat on the third planes of the two supporting portions, the outer portions of the two arc-shaped seats are completely accommodated in their respective arc-shaped grooves, and the inner portions of the two arc-shaped seats protrude above the inner groove walls of their respective arc-shaped grooves so as to cause the first shaping surface and the second shaping surface to be in the same plane, the first part and the second part are in an initial state;

[0018] When the two arc-shaped seats rotate outwards respectively, causing the first shaping surface and the second shaping surface to be respectively attached to the two side surfaces of the outer corner portion to form a corresponding included angle adapted to the bending angle, and causing the two second planes to be at the corresponding included angle with their respective third planes, the first part and the second part are in a working state of bending the sheet.

[0019] Further, assembly grooves are respectively provided on the outer groove walls of the first arc-shaped groove and the second arc-shaped groove. The two assembly grooves penetrate their respective outer groove walls in directions away from each other. A return spring is assembled in each assembly groove, and the return spring is connected to the outside of its respective part.

[0020] Further, it also includes a first base and a second base that can move towards and away from each other. The first bending portion and the second bending portion are respectively arranged on the first base and the second base;

[0021] The first bending portion includes a shaping roller arranged along the length direction of the first base. The inner corner portion is provided on the shaping roller along its own length direction. The outer corner portion is arranged on the second base along the length direction of the second base.

[0022] The die bending device of the present utility model has at least the following beneficial effects: The first bending part and the second bending part that can move towards and away from each other apply forces from two sides of the plate to bend the plate into a certain angle. The first bending part that can change the angle can conform to the plate as the angle of the plate changes continuously, without generating hard friction with the plate, effectively protecting the surface of the plate from being scratched; The first bending part that cannot change the angle can also rotate relative to the base where it is located to achieve the effect of avoiding hard friction, ensuring the beauty and integrity of the product appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0024] Figure 1 is a schematic structural diagram of the initial state of the first embodiment of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the first embodiment of the present utility model with the first bending part and the second bending part hidden;

[0026] Figure 3 is a schematic structural diagram of the working state of the first embodiment of the present utility model;

[0027] Figure 4 is a schematic structural diagram of the second embodiment of the present utility model;

[0028] Figure 5 is a schematic cross-sectional structural diagram of the second embodiment of the present utility model;

[0029] Figure 6 is a schematic structural diagram of the third embodiment of the present utility model;

[0030] Figure 7 is a schematic cross-sectional structural diagram of the third embodiment of the present utility model.

[0031] The meanings of the reference numerals in the drawings are as follows:

[0032] Bending mechanism 1a, first bending part 11a, first sub-part 111a, first shaping surface 1110, first arc seat 1111, first planes 1112a, 1112b, second planes 1113a, 1113b, first fixed shaft 1114, second sub-part 112a, second shaping surface 1121, second arc seat 1122, second fixed shaft 1123, second bending part 12a, outer corner part 121a, first base 2a, base 21, support part 22a, third plane 23a, reset assembly 24a, spiral spring 241, adapter seat 3a, arc groove 31;

[0033] Bending mechanism 1b, first bending part 11b, first sub - part 111b, first shaping surface 1115, first arc seat 1116, first planes 1117a, 1117b, first fixed shaft 1118, second sub - part 112b, second shaping surface 1124, second arc seat 1125, second fixed shaft 1126, second bending part 12b, outer - angle part 121b, first base 2b, reset part 21, first reset spring 211, second reset spring 212, first assembly groove 213, first connecting rod 214, second assembly groove 215, second connecting rod 216, supporting part 22b, third plane 23b, adapter seat 3b, first arc groove 32, second arc groove 33, relief groove 34;

[0034] Bending mechanism 1c, first bending part 11c, second bending part 12c, shaping roller 113, notch 1131, third fixed shaft 1132, pressing component 114, pressing block 1141, connecting part 1141a, extending part 1141b, connecting shaft 1142, first segment 1142a, second segment 1142b, second elastic part 1143, first base 2c, first groove 25, second groove 26, third groove 27, fourth groove 28, second base 5, first sub - seat 51, second sub - seat 52, third sub - seat 53, outer - angle part 54;

[0035] Sheet material 4. Specific embodiments

[0036] The present utility model will be further described below with reference to the accompanying drawings.

[0037] Embodiment 1:

[0038] Please refer to Figure 1 , Figure 2 and Figure 3, the die bending device of the present utility model is used to bend a sheet 4, and includes a bending mechanism 1a, a first base 2a, and a transfer seat 3a provided on the first base 2a. The sheet 4 to be processed has a first side and a second side opposite to the first side. The bending mechanism 1a includes a first bending part 11a located at the first side of the sheet 4 and a second bending part 12a located at the second side of the sheet 4. The first bending part 11a is provided on the first base 2a through the transfer seat 3a. The first bending part 11a has an inner corner part adapted to the bending angle of the sheet 4 to be bent, and the second bending part 12a has an outer corner part 121a adapted to the bending angle of the sheet 4 to be bent. The outer corner part 121a and the inner corner part can move towards and away from each other; when it is necessary to bend the sheet 4, the outer corner part 121a and / or the inner corner part move towards each other (the first bending part 11a moves towards the second bending part 12a, the second bending part 12a moves towards the first bending part 11a, or the first bending part 11a and the second bending part 12a move towards each other simultaneously), and the outer corner part 121a and the inner corner part form a complement to bend the sheet 4 into a corresponding angle. It should be understood that the first base 2a and the transfer seat 3a are not essential components. For example, in other embodiments, the first bending part 11a can also be installed at other positions to be installed or directly connected to a driving mechanism. The function of the transfer seat 3a is to enable the first branch 111a and the second branch 112a described below to be rotatably installed thereon, so that the inner angle of the first bending part is an inner angle with a variable angle, which is suitable for sheets with different bending angle requirements. Therefore, the transfer seat 3a is also not an essential component in other embodiments. In summary, as long as the first bending part 11a and the second bending part 12a can move towards each other so that the inner corner part and the outer corner part 121a form a complement to bend the sheet.

[0039] In the illustrated embodiment, the first base 2a is a fixed seat, the first bending part 11a is provided on the upper part of the first base 2a through the transfer seat 3a, the inner corner part is defined as an inner corner part with a variable angle, and the angle of the inner corner part with a variable angle during bending the sheet 4 is adapted to the angle of the sheet 4 to be bent. The second bending part 12a is located above the first bending part 11a, and the sheet 4 is located between the first bending part 11a and the second bending part 12a. Specifically, it is placed on the first bending part 11a. When it is necessary to bend the sheet 4, the second bending part 12a moves towards the first bending part 11a (i.e., downward).

[0040] The first base 2a includes a base 21, and two support portions 22a are provided at the upper end of the base 21. The upper end surfaces of the two support portions 22a are defined as a third plane 23a. The adapter base 3a is disposed on the first base 2a along the length direction of the first base 2a at a position between the two support portions 22a, and the adapter base 3a is slidably connected to the two support portions 22a along the moving direction of the first bending portion 11a and the second bending portion 12a (the up-and-down direction in the figure), that is, the adapter base 3a can slide vertically relative to the two support portions 22a. An arc-shaped groove 31 for accommodating the first bending portion 11a is recessed downward on the side of the adapter base 3a facing the plate (i.e., the upper end surface). A reset assembly 24a for driving the adapter base 3a to reset is provided between the lower end surface of the adapter base 3a and the upper end surface of the base 21. The reset assembly 24a includes a plurality of first elastic members. In the illustrated embodiment, the first elastic member is defined as a helical spring 241.

[0041] The first bending portion 11a is disposed on the adapter base 3a and includes a first sub-portion 111a and a second sub-portion 112a which are arranged in parallel. The first sub-portion 111a and the second sub-portion 112a are symmetrically disposed on both sides in the width direction of the adapter base 3a with the central axis in the length direction of the adapter base 3a as the axis of symmetry.

[0042] The first subsection 111a is arranged on the adapter seat 3a at a position close to one of the support portions 22a, that is, located on one side of the width direction of the adapter seat 3a. The end surface (that is, the upper end surface) of the first subsection 111a facing the plate 4 is defined as the first shaping surface 1110. A first arc seat 1111 is convexly provided at the lower end surface of the first subsection 111a at a position corresponding to the arc groove 31. The first arc seat 1111 is located on one end of the first subsection 111a close to the second subsection 112a. The curvature of the first arc seat 1111 is adapted to the arc groove 31 and is accommodated on one lateral side of the arc groove 31. The side surface of the first arc seat 1111 close to the second subsection 112a is the first plane 1112a, and the first plane 1112a is perpendicular to the first shaping surface 1110. The lower end surface of the first sub-portion 111a, which is located outside the first arc seat 1111, is defined as a second plane 1113a, and the second plane 1113a corresponds to the third plane 23a of the corresponding support portion 22a, and the second plane 1113a is parallel to the first shaping surface 1110. The first sub-portion 111a is provided with a first fixed shaft 1114 along its length direction, and a coil spring (not shown in the figure) is provided between the first sub-portion 111a and the first fixed shaft 1114 to elastically rotate and connect the first sub-portion 111a and the first fixed shaft 1114, and the two ends of the first fixed shaft 1114 are fixedly connected to the external mold seat (not shown in the figure), and the first sub-portion 111a can rotate around the first fixed shaft 1114 in the arc groove 31, and the first fixed shaft 1114 limits the first sub-portion 111a so that the first sub-portion 111a will not deviate from its own rotation stroke.

[0043] The second sub-portion 112a is arranged on the adapter seat 3a at a position close to the other supporting portion 22a, that is, located on the side of the adapter seat 3a away from the first sub-portion 111a. The end surface of the second sub-portion 112a facing the plate 4 is defined as the second shaping surface 1121. A second arc seat 1122 is convexly provided on the lower end surface of the second sub-portion 112a at a position corresponding to the arc groove 3, and the second arc seat 1122 is located on the second sub-portion 112a at an end close to the first sub-portion 111a. The curvature of the second arc seat 1122 is adapted to the arc groove 31 and is accommodated in the arc groove 31 on a side away from the first arc seat 1111, and the side surface of the second arc seat 1122 close to the first sub-portion 111a is the first plane 1112b, and the first plane 1112b is perpendicular to the second shaping surface 1121. The lower end surface of the second sub-section 112a is located outside the second arc seat 1122 and is defined as a second plane 1113b, and the second plane 1113b is parallel to the second shaping surface 1121. The second sub-section 112a is provided with a second fixed shaft 1123 along its length direction, and a coil spring (not shown in the figure) is provided between the second sub-section 112a and the second fixed shaft 1123 to elastically rotate and connect the second sub-section 112a and the second fixed shaft 1123, and the second fixed shaft 1123 and the first fixed shaft 1114 are symmetrically arranged with the central axis of the length direction of the transfer seat 3a as the symmetry axis, and the two ends of the second fixed shaft 1123 are fixedly connected to the external mold seat (not shown in the figure), and the second sub-section 112a can rotate around the second fixed shaft 1123 in the arc groove 31, and the second fixed shaft 1123 limits the second sub-section 112a so that the second sub-section 112a will not deviate from its own rotation stroke. The second shaping surface 1121 and the first shaping surface 1110 are adjacent to each other and form an inner corner with a bendable angle. The angle of the inner corner with a variable angle is adapted to the angle of the plate 4 to be bent. The variable angle setting of the inner corner can make the first subsection 111a and the second subsection 112a gradually change their angles as the bending angle of the plate 4 changes. On the one hand, the first shaping surface 1110 and the second shaping surface 1121 can always remain relatively still with the first side surface of the plate 4 without generating friction with the plate 4, thereby protecting the appearance of the plate 4. On the other hand, when the angle of the plate 4 to be bent changes, it is only necessary to change the outer corner 121a with different angles, and the inner corner with a variable angle can complement and match the outer corner 121a. At the same time, when the bending is completed, as the second bending portion 12a moves upward, the first shaping surface 1110 and the second shaping surface 1121 gradually return to horizontal and separate from the first side surface of the plate 4, so that it is convenient for the staff to remove the bent plate 4 from the first bending portion 11a.

[0044] The second bending portion 12a is disposed at a position where the first shaping surface 1110 and the second shaping surface 1121 are adjacent to each other (hereinafter referred to as the adjacent position). One end (i.e., the lower end) of the second bending portion 12a close to the first bending portion 11a has two side surfaces along its own length direction. Specifically, the lower end of the first bending portion 11a gradually decreases from top to bottom to form the outer corner portion 121a. The two side surfaces of the outer corner portion 121a (i.e., the first side surface and the second side surface of the outer corner portion 121a) are inclined and intersect in opposite directions and in the direction of the adjacent position, and the intersection forms the apex of the outer corner portion 121a. One end (i.e., the upper end) of the second bending portion 12a far from the first bending portion 11a is connected to an external driving member (not shown in the figure), and the driving member drives the second bending portion 12a to move vertically to cooperate with the first bending portion 11a to bend the sheet 4.

[0045] The working mode of the first embodiment of the present invention is as follows: In the initial state, the first shaping surface 1110 and the second shaping surface 1121 are on the same horizontal plane and adjacent to each other. At this time, the first plane 1112a of the first part 111a is parallel to the first plane 1112b of the second part 112a. The first arc seat 1111 and the second arc seat 1122 are completely received in the arc groove 31. The first plane 1112a of the first part 111a is placed flat on the third plane 23a of the corresponding support part 22a, and the first plane 1112b of the second part 112a is placed flat on the third plane 23a of another support part 22a.

[0046] Place the sheet 4 to be bent on the first shaping surface 1110 and the second shaping surface 1121. Align the position to be bent with the adjacent part of the first shaping surface 1110 and the second shaping surface 1121. Lower the second bending part 12a so that its lower end presses down on the adjacent part of the first shaping surface 1110 and the second shaping surface 1121. During the pressing-down process of the second bending part 12a, the adapter seat 3a is also pressed down. The two second planes 1113a and 1113b are respectively lifted by the edges of the corresponding third planes 23a. The first branch 111a and the second branch 112a are flipped towards each other under the limitation of the two side surfaces of the outer corner part 121a, so that the first shaping surface 1110 and the second shaping surface 1121 are attached to the two side surfaces of the outer corner part 121a to form a corresponding included angle adapted to the bending angle, forming a complement with the outer corner part 121a. The first shaping surface 1110, the second shaping surface 1121 and the outer corner part 121a bend and form the sheet 4 from both sides. At this time, the first plane 1112a of the first branch 111a and the first plane 1112b of the second branch 112a also form a corresponding included angle, the second plane 1113a and the corresponding third plane 23a form a corresponding included angle, and the second plane 1113b and the corresponding third plane 23a form a corresponding included angle. This is the working state of the first branch 111a and the second branch 112a. At this time, several first elastic members are in a compressed state. When the bending is completed, the second bending part 12a moves upward. The adapter seat 3a, the first branch 111a and the second branch 112a rebound under the resilience of their respective coil springs to return to the initial position. During this process, the resilience of several first elastic members plays a role in returning each component to its position. At the same time, the first elastic members can also buffer the downward pressure of the second bending part 12a on the adapter seat 3a, avoiding damage to the sheet 4 and the first bending part 11a caused by excessive downward pressure of the second bending part 12a.

[0047] Embodiment 2:

[0048] Please refer to Figure 4 and Figure 5 , this embodiment has a bending mechanism 1b with the same or similar structure or function as that of Embodiment 1, that is, the first bending part 11b and the second bending part 12b with the same or similar structure or function. The second bending part 12b has an outer corner part 121b that complements and cooperates with the first bending part 11b. It also includes a first base 2b for installing the bending mechanism 1b.

[0049] A transfer seat 3b is provided on the first base 2b for the first branch 111b and the second branch 112b of the first bending portion 11b to be transferred thereto. On one side of the transfer seat 3b facing the sheet to be processed 4, an arc-shaped groove is provided for a part where the first branch 111b and the second branch 112b approach each other to be received therein. The arc-shaped groove includes a first arc-shaped groove 32 and a second arc-shaped groove 33 which are spaced apart from each other and arranged side by side. The first arc-shaped groove 32 is used for the first branch 111b to be received therein, and the first arc-shaped groove 32 is formed by being recessed downward from one lateral side of the transfer seat 3b (i.e., the upper end face) facing the sheet 4. The second arc-shaped groove 33 is used for the second branch 112b to be received therein, and the second arc-shaped groove 33 is formed by being recessed downward from the other lateral side of the transfer seat 3b, and the second arc-shaped groove 33 has the same length as the first arc-shaped groove 32 and there is a separation portion therebetween. The separation portion is arranged along the length direction of the first arc-shaped groove 32 and the second arc-shaped groove 33 and separates the first arc-shaped groove 32 from the second arc-shaped groove 33. A relief groove 34 is provided at a position on the separation portion facing the outer corner portion 121b, and the relief groove 34 is used to provide a relief space for the second bending portion 12b to be pressed down when the second bending portion 12b is pressed down. The two side surfaces of the separation portion facing the first arc-shaped groove 32 and the second arc-shaped groove 33 are respectively defined as the inner groove walls of the first arc-shaped groove 32 and the second arc-shaped groove 33, and the height of the inner groove walls is lower than the height of the outer side walls of the first arc-shaped groove 32 and the second arc-shaped groove 33. The outer side walls of the first arc-shaped groove 32 and the second arc-shaped groove 33 are defined as two support portions 22b for supporting the first branch 111b and the second branch 112b, and the end faces (i.e., the upper end faces) of the two support portions 22b facing the sheet 4 are defined as a third plane 23b.

[0050] The first sub-portion 111b is arranged in the first arc groove 32, and one end surface (i.e., the upper end surface) of the first sub-portion 111b facing the plate 4 is defined as a first shaping surface 1115. A first arc seat 1116 is convexly provided at the position of the lower end surface of the first sub-portion 111b corresponding to the first arc groove 32, and the first arc seat 1116 is located on the first sub-portion 111b near one end of the second sub-portion 112b. The curvature of the first arc seat 1116 is adapted to the first arc groove 32 and is accommodated in the first arc groove 32. A surface of the lower end surface of the first sub-portion 111b located outside the first arc seat 1116 is defined as a first plane 1117a, and the first plane 1117a corresponds to the third plane 23b of the corresponding support portion 22b, and the first plane 1117a is parallel to the first shaping surface 1115. The first section 111b is provided with a first fixed shaft 1118 running through it along its length direction. Both ends of the first fixed shaft 1118 are fixedly connected to an external mold base (not shown in the figure). The first section 111b can rotate around the first fixed shaft 1118 in the first arc groove 32. The first fixed shaft 1118 limits the first section 111b so that the first section 111b will not deviate from its own rotation range.

[0051] The second sub-portion 112b is arranged in the second arc groove 33, and one end surface (i.e., the upper end surface) of the second sub-portion 112b facing the plate 4 is defined as a second shaping surface 1124. A second arc seat 1125 is convexly provided at the position of the lower end surface of the second sub-portion 112b corresponding to the second arc groove 33, and the second arc seat 1125 is located on the second sub-portion 112b near one end of the first sub-portion 111b. The curvature of the second arc seat 1125 is adapted to the second arc groove 33 and is accommodated in the second arc groove 33. A surface of the lower end surface of the second sub-portion 112b located outside the second arc seat 1125 is defined as a first plane 1117b, and the first plane 1117b corresponds to the third plane 23b of the corresponding support portion 22b, and the first plane 1117b is parallel to the second shaping surface 1124. The second branch 112b is provided with a second fixed shaft 1126 along its length direction. Both ends of the second fixed shaft 1126 are fixedly connected to an external mold base (not shown in the figure). The second branch 112b can rotate around the second fixed shaft 1126 in the second arc groove 33. The second fixed shaft 1126 limits the second branch 112b so that the second branch 112b will not deviate from its own rotation range.

[0052] A reset member 21 for driving the first part 111b and the second part 112b to reset is provided between the adapter base 3b and the bending mechanism 1b. The reset member 21 includes a first reset spring 211 and a second reset spring 212 symmetrically arranged on the first part 111b and the second part 112b. A first assembly groove 213 is formed on the outer groove wall of the first arc groove 32. The first assembly groove 213 is opened along the transverse direction of the first base 2b, penetrates the outer groove wall of the first arc groove 32 along the direction away from the second arc groove 33, penetrates the first arc seat 1116 along the direction close to the second arc groove 33. Two first connecting rods 214 are respectively arranged between the two side groove walls of the part of the first assembly groove 213 located in the first arc seat 1116 and between the two side walls of the part of the first assembly groove 213 located in the adapter base 3b. The first reset spring 211 is connected between the two first connecting rods 214. A second assembly groove 215 is formed on the outer groove wall of the second arc groove 33. The second assembly groove 215 is opened along the transverse direction of the first base 2b, penetrates the outer groove wall of the second arc groove 33 along the direction away from the first arc groove, penetrates the second arc seat 1125 along the direction close to the first arc groove 32. Two second connecting rods 216 are respectively arranged between the two side groove walls of the part of the second assembly groove 215 located in the second arc seat 1125 and between the two side walls of the part of the second assembly groove 215 located in the adapter base 3b. The second reset spring 212 is connected between the two second connecting rods 216.

[0053] Working method of Embodiment 2 of the present utility model: When the first plane 1117a and the first plane 1117b are respectively placed flat on the third plane 23b of the two support parts 22b, the outer parts of the two arc seats are completely accommodated in their respective arc grooves, and the inner parts of the two arc seats are higher than the inner groove walls of their respective arc grooves to cause the first shaping surface 1115 and the second shaping surface 1124 to be in the same plane, the first branch 111b and the second branch 112b are in the initial state; when the two arc seats rotate outwards respectively, causing the first shaping surface 1115 and the second shaping surface 1124 to be respectively attached to the two side surfaces of the outer corner part 121b to form a corresponding included angle adapted to the bending angle, and causing both first planes to be opposite to their respective third planes 23b for the corresponding included angle, the first branch 111b and the second branch 112b are in the working state of bending the sheet 4. The working methods of the first base 2b and the bending mechanism 1b are the same as those of the first base 2b and the bending mechanism 1b in Embodiment 1, so they will not be elaborated here. When the first branch 111b and the second branch 112b rotate relative to each other, the first return spring 211 and the second return spring 212 are respectively stretched by the first branch 111b and the second branch 112b. When the bending is completed and the second bending part 12b moves away from the first bending part 11b, the first branch 111b and the second branch 112b are respectively reset to the initial state under the resilience of the first return spring 211 and the second return spring 212.

[0054] Embodiment 3:

[0055] Please refer to Figure 6 and Figure 7 In this embodiment, the die bending device includes a bending mechanism 1c, a first base 2c, and a second base 5. The bending mechanism 1c has a first bending part 11c disposed at the first side surface of the sheet 4 to be processed and a second bending part 12c disposed at the second side surface of the sheet 4 to be processed opposite to the first side surface; the first bending part 11c has an inner corner part adapted to the bending angle of the sheet 4 to be bent, the second bending part 12c has an outer corner part 54 adapted to the bending angle of the sheet 4 to be bent, and the outer corner part 54 and the inner corner part can move towards and away from each other; when it is necessary to bend the sheet 4, the outer corner part 54 and / or the inner corner part move towards each other, and the outer corner part 54 and the inner corner part form a complement to bend the sheet 4 into a corresponding angle.

[0056] The first base 2c and the second base 5 can move towards and away from each other. In the illustrated embodiment, the second base 5 is a fixed base, and the outer corner portion 54 is provided on the second base 5; the first base 2c is a movable base that can move towards and away from the second base 5, and the first base 2c is connected to an external driving member (not shown in the figure) to be able to move vertically, and the inner corner portion is provided on the first base 2c. The first bending portion 11c is located above the second bending portion 12c, and the sheet 4 is located between the first bending portion 11c and the second bending portion 12c. Specifically, it is placed on the second base 5. When it is necessary to bend the sheet 4, the first bending portion 11c moves towards the second bending portion 12c so that the inner corner portion and the outer corner portion 54 are mutually attached and fitted.

[0057] The first bending portion 11c includes a shaping roller 113 and a pressing assembly 114 that cooperates with the shaping roller 113 to bend the sheet 4. The lower end surface of the first base 2c (the end surface facing the first bending portion 11c) is recessed upward along its own length direction to form a first groove 25 for installing the first bending portion 11c. The cross-section of the first groove 25 is circular, and the first groove 25 penetrates the first base 2c along the length direction of the first base 2c. The shaping roller 113 is installed in the first groove 25 and its lower end extends out of the first groove 25, that is, the lower end of the shaping roller 113 is lower than the lower end surface of the first base 2c. A third fixed shaft 1132 is provided through the shaping roller 113 along its own length direction. A coil spring (not shown in the figure) is provided between the shaping roller 113 and the third fixed shaft 1132 so that the shaping roller 113 and the third fixed shaft 1132 are elastically rotatably connected. The two ends of the third fixed shaft 1132 are fixedly connected to an external die base (not shown in the figure), and the shaping roller 113 can rotate around the third fixed shaft 1132 in the first groove 25. A fan-shaped notch 1131 is formed on the shaping roller 113, and the two side surfaces at the notch 1131 together form the inner corner portion.

[0058] The pressing assembly 114 includes a pressing block 1141, a connecting shaft 1142 for connecting the pressing block 1141 to the first base 2c, and a second elastic member 1143 disposed between the pressing block 1141 and the first base 2c. The pressing block 1141 is arranged along the length direction of the first base 2c, and has a connecting portion 1141a directly connected to the first base 2c and an extending portion 1141b disposed on one side of the connecting portion 1141a. The extending portion 1141b is disposed on the side of the connecting portion 1141a close to the shaping roller 113. The thickness of the connecting portion 1141a is greater than that of the extending portion 1141b, and the lower end surfaces of the connecting portion 1141a and the extending portion 1141b are flush. The connecting shaft 1142 is defined as several, and several connecting shafts 1142 are vertically arranged at equal intervals along the length direction of the pressing block 1141 on the upper end surface of the connecting portion 1141a. Each connecting shaft 1142 includes a first segment 1142a and a second segment 1142b coaxially disposed at the lower end of the first segment 1142a, and the diameter of the second segment 1142b is smaller than that of the first segment 1142a. The second elastic member 1143 is also vertically arranged at equal intervals along the length direction of the pressing block 1141 on the upper end surface of the connecting portion 1141a and is staggered from the several connecting shafts 1142. The first base 2c is provided with a second groove 26 for installing the pressing block 1141. The second groove 26 penetrates the first base 2c along the length direction of the first base 2c and penetrates downward through the lower end surface of the first base 2c, and includes a first groove body matching the connecting portion 1141a and a second groove body matching the extending portion 1141b. One end of the second groove body far from the first groove body is communicated with the first groove 25. When the pressing block 1141 is at the uppermost end of its stroke, the pressing block 1141 is located in the second groove body, and one end of the extending portion 1141b far from the connecting portion 1141a extends into the first groove 25 and is caught in the notch 1131. The upper end surface of the first groove body is recessed upward to form a third groove 27 for installing the connecting shaft 1142. There are several third grooves 27 corresponding to the connecting shafts 1142 one by one. Each third groove 27 has a third groove body matching the first segment 1142a and a fourth groove body matching the second segment 1142b. The upper end surface of the first groove body is further recessed upward to form a fourth groove 28 for installing the second elastic member 1143. There are several fourth grooves 28 corresponding to the several second elastic members 1143 one by one.

[0059] The second base 5 is arranged along the length direction of the first base 2c, and the cross-section of the second base 5 is in an I shape, that is, the second base 5 has a first sub-base 51, a second sub-base 52, and a third sub-base 53. The second sub-base 52 is vertical in the lateral projection plane. The first sub-base 51 is located on the upper end surface of the second sub-base 52 and has a width greater than that of the second sub-base 52. The third sub-base 53 is located on the lower end surface of the second sub-base 52 and has a width greater than those of the first sub-base 51 and the second sub-base 52. In this way, the second base 5 can be placed more stably. One end of the first sub-base 51 close to the first base 2c is the second bending portion 12c. The two outer side walls of the second bending portion 12c corresponding to the two side surfaces of the notch form an outer corner portion 54 matching the notch 1131 to complement the inner corner portion.

[0060] The working mode of the third embodiment of the present invention is as follows: In the initial state, the pressing block 1141 extends downward out of the second groove 26. At this time, the second elastic member 1143 is in a natural elongation state, and the connecting shaft 1142 is at the lowest end of its own stroke, that is, the first segment 1142a is at the lowest end of the third groove body. Place the sheet 4 on the upper end surface of the first sub-base 51 and align the portion of the sheet 4 to be bent with the side edge of the first sub-base 51 close to the shaping roller 113. Move the first base 2c downward. At this time, the pressing block 1141 first contacts the upper end surface of the sheet 4 and moves upward under the resistance of the sheet 4 until it is retracted into the second groove 26. During this process, the upper end surface of the extension portion 1141b drives the notch 1131 to gradually approach the angle of engagement with the outer corner portion 54, and the shaping roller 113 also gradually bends the sheet 4 downward. When the notch 1131 engages with the outer corner portion 54, the portion of the sheet 4 bent downward contacts the side wall of the first sub-base 51. At this time, the bending is completed. The first base 2c moves upward, and the pressing block 1141 returns to the initial position under the resilience of the second elastic member 1143, and the shaping roller 113 also returns to the initial position under the resilience of the coil spring. The rotatability of the shaping roller 113 enables the engagement between the notch 1131 and the sheet 4 to be continuously adjusted as the sheet 4 is continuously bent, avoiding hard friction between the notch 1131 and the sheet 4.

Claims

1. A mold bending device, comprising a bending mechanism, characterized in that: The bending mechanism comprises a first bending portion arranged at a first side surface of a plate to be processed and a second bending portion arranged at a second side surface of the plate to be processed opposite to the first side surface; the first bending portion comprises an inner corner portion adapted to the bending angle of the plate to be bent, and the second bending portion comprises an outer corner portion adapted to the bending angle of the plate to be bent, and the outer corner portion and the inner corner portion can move toward and away from each other; when the plate needs to be bent, the outer corner portion and / or the inner corner portion are moved toward each other, and the outer corner portion and the inner corner portion complement each other to bend the plate to a corresponding angle.

2. The mold bending device according to claim 1, characterized in that: The inner corner is defined as a variable-angle inner corner, and the angle of the variable-angle inner corner when bending the plate is adapted to the angle of the plate to be bent.

3. The mold bending device according to claim 2, characterized in that: The invention also includes a first base, wherein the first bending portion includes a first sub-section and a second sub-section which are arranged in parallel on the first base; the first sub-section has a first shaping surface facing the first side surface of the plate to be processed, and the second sub-section has a second shaping surface facing the first side surface of the plate to be processed; the first shaping surface and the second shaping surface are located in the same horizontal plane and adjacent to each other in an initial state, and the first shaping surface and the second shaping surface form the inner angle portion of the variable angle; The outer corner portion is arranged opposite to the position where the first shaping surface and the second shaping surface are adjacent to each other. When the first bending portion moves toward the second bending portion, the second bending portion moves toward the first bending portion, or the first bending portion and the second bending portion move toward each other at the same time, the first shaping surface and the second shaping surface can be flipped toward each other with their respective parts under the limitation of the two side surfaces of the outer corner portion when bending the plate material, so as to fit outside the two side surfaces of the outer corner portion, thereby complementing the outer corner portion.

4. The mold bending device according to claim 3, characterized in that: The first base is provided with a transfer seat for the first sub-section and the second sub-section to transfer thereto, and the transfer seat is provided with an arc-shaped groove for accommodating the mutually adjacent parts of the first sub-section and the second sub-section on one side facing the plate to be processed; An arc seat is protrudingly provided on one side of the first section and the second section facing the arc groove, and the two arc seats are both accommodated in the arc groove and the curvature is adapted to the arc groove, and the side surfaces of the two arc seats close to each other are both first planes perpendicular to their respective shaping surfaces.

5. The mold bending device according to claim 4, characterized in that: The first sub-portion and the second sub-portion also each have a second plane located outside of the respective arc-shaped seat, and the second plane is parallel to the respective shaping surface; Two supporting parts are arranged at positions on the first base facing the two second planes, the two supporting parts are respectively located outside two sides of the adapter, and a side surface of the two supporting parts facing the respective second planes is defined as a third plane; When the first planes of the first sub-part and the second sub-part are parallel to each other, the two arc-shaped seats are completely accommodated in the arc-shaped grooves, and the second planes are respectively placed flat on the third planes on the two supporting parts, the first shaping surface and the second shaping surface of the first sub-part and the second sub-part are located in the same plane, and the first sub-part and the second sub-part are in an initial state; When the two arc-shaped seats rotate outward respectively, causing the first shaping surface and the second shaping surface to be respectively attached to the two side surfaces of the outer corner to form corresponding angles matching the bending angle, causing the two first planes to form the corresponding angles, and causing the two second planes to form the corresponding angles with their respective third planes, the first division and the second division are in a working state for bending the plate.

6. The mold bending device according to claim 5, characterized in that: The adapter seat is slidably disposed inside the two arc-shaped seats along the moving direction of the first bending portion and the second bending portion. A reset component is provided between the adapter seat and the first base. The reset component is used to drive the adapter seat to move and reset. The reset component includes a plurality of first elastic members.

7. The mold bending device according to claim 4, characterized in that: The arc groove includes a first arc groove and a second arc groove which are spaced apart from each other and arranged side by side. The first arc groove and the second arc groove are separated by a partition on one side adjacent to each other. A yield groove is arranged on the partition at a position directly opposite to the outer corner. The two side surfaces of the partition facing the first arc groove and the second arc groove are respectively defined as inner groove walls of the first arc groove and the second arc groove, and the height of the inner groove wall is lower than the height of the outer wall of the first arc groove and the second arc groove. The arc seats of the first branch and the second branch are respectively arranged in the first arc groove and the second arc groove.

8. The mold bending device according to claim 7, characterized in that: The first sub-portion and the second sub-portion also each have a second plane located outside of the respective arc-shaped seat, and the second plane is parallel to the respective shaping surface; The outer groove walls of the first arc-shaped groove and the second arc-shaped groove are defined as two supporting parts for supporting the second plane, and the side surfaces of the two supporting parts facing the respective second planes are defined as a third plane; When the second planes of the first sub-portion and the second sub-portion are respectively placed flat on the third planes on the two supporting portions, the outer sides of the two arc-shaped seats are completely accommodated in the respective arc-shaped grooves, and the inner sides of the two arc-shaped seats are higher than the inner groove walls of the respective arc-shaped grooves so that the first shaping surface and the second shaping surface are located in the same plane, the first sub-portion and the second sub-portion are in an initial state; When the two arc-shaped seats rotate outward respectively, causing the first shaping surface and the second shaping surface to be respectively attached to the two side surfaces of the outer corner to form corresponding angles that match the bending angle, and causing the two second planes to be at the corresponding angles with their respective third planes, the first division and the second division are in a working state for bending the plate.

9. The mold bending device according to claim 8, characterized in that: The first arc groove and the second arc groove are both provided with assembly grooves on their outer groove walls, and the two assembly grooves penetrate their respective outer groove walls in directions away from each other; each assembly groove is equipped with a return spring, and the return spring is connected to the outer side of the respective branch.

10. The mold bending device according to claim 1, characterized in that: It also includes a first base and a second base that can move toward and opposite to each other, and the first bending portion and the second bending portion are respectively arranged on the first base and the second base; The first bending portion includes a shaping roller arranged along the length direction of the first base, and the shaping roller is provided with the inner corner portion along its own length direction; the outer corner portion is arranged on the second base along the length direction of the second base.

Images