Bending mechanism, method for manufacturing bent plate using bending mechanism, and bent plate

Abstract

The present invention provides a bending mechanism, a method for making a bending plate using the bending mechanism, and a bending plate. A transition fold is provided at the secondary bending position of the bending plate. When the primary fold is bent, the transition fold is not bent, and the circumferential primary fold is disconnected at the secondary bending position. When the secondary fold is bent, it will not bulge outward at the intersection of the secondary bending position and the primary fold due to the extrusion of the primary fold. The unbent transition fold is bent by the bending mechanism of the present invention. The bending mechanism includes a first slider unit, and the first slider unit includes a first slider that can move along a first direction. The first slider moves along the first direction to extrude the transition fold so that the transition fold is bent along the first direction. The first direction and the bending direction of the primary fold of the bending plate point to the same side of the bending plate. In this way, while completing the bending of all the folds of the bending plate, the technical problem of the product bulging outward at the intersection of the secondary bending position and the primary fold is also avoided.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a bending mechanism, a method for manufacturing a bent plate using the bending mechanism, and the bent plate. Background Art

[0002] At present, sheet metal parts often have small folds on the bends, that is, the secondary folds have primary folds. The traditional method is to fold a whole circle of small folds first, that is, fold a whole circle of primary folds first, and then fold the product into a large bend, that is, fold the secondary folds again. The product often bulges outward at the intersection of the bends, such as Figure 1 As shown, the position where the secondary bending position 301 and the primary folding edge intersect, that is, position B in the figure, bulges outwards. This defect seriously affects the appearance of the product. Summary of the invention

[0003] In order to solve the technical problems in the prior art, the present invention provides a bending mechanism, a method for manufacturing a bent plate using the bending mechanism, and a bent plate. The specific scheme is as follows:

[0004] A bending mechanism includes a first slider unit, wherein the first slider unit includes a first slider capable of moving along a first direction, the first slider being used to squeeze a transition fold of a bending plate so that the transition fold is bent along the first direction, and the first direction and the bending direction of the primary fold of the bending plate point to the same side of the bending plate.

[0005] Furthermore, the first slider unit also includes a first commutation block arranged opposite to the first slider, and the first slider and / or the first commutation block are configured with a first commutation surface, which is used to convert the movement of the first slider toward the first commutation block into the movement of the first slider along the first direction.

[0006] Furthermore, the first commutation surface of the first slider is parallel to the first commutation surface of the first commutation block, the angle between the relative arrangement direction of the first slider and the first commutation block and the first commutation surface of the first slider is 45 degrees, and the first direction is parallel to the first commutation surface of the first slider.

[0007] Furthermore, it also includes a first mold base and a second mold base, and the first slider unit also includes a slider mounting seat;

[0008] The slider mounting seat is fixedly connected to the first mold base, and the first slider is mounted on the slider mounting seat and can move along the arrangement direction of the secondary bending position of the bending plate;

[0009] The first reversing block is fixedly connected to the second mold base.

[0010] Furthermore, the first slider unit also includes a first fixing seat and a first resetting mechanism;

[0011] The first fixing seat is fixedly connected to the first mold base, the first reset mechanism is installed on the first fixing seat, and the movable end of the first reset mechanism is connected to the first sliding block.

[0012] Furthermore, it also includes a pressing unit, which includes a first pressing unit, and the first pressing unit includes a first pressing block. The first pressing block can move along the arrangement direction of the secondary bending position of the bending plate so that the first pressing block abuts against the secondary bending position of the bending plate.

[0013] Furthermore, it also includes a first die base and a second die base, and the first pressing unit also includes a first driving block, a second reversing block and a movable mounting component;

[0014] The first driving block is fixedly connected to the first mold base;

[0015] The second reversing block and the first pressing block are both fixedly connected to the movable mounting component, and the movable mounting component is arranged on the second die base and can move relative to the second die base along the arrangement direction of the secondary bending positions of the bending plate;

[0016] The first driving block and / or the second commutating block is constructed with a second commutating surface, and the second commutating surface is used to convert the relative movement of the second commutating block toward the first die base into the movement of the second commutating block along the arrangement direction of the secondary bending position of the bending plate, thereby driving the movable mounting component and the first pressing block installed on the movable mounting component to move.

[0017] Furthermore, the pressing unit also includes a second pressing unit, the second pressing unit includes a second pressing block, the first pressing block and the second pressing block are arranged opposite to each other, and the first pressing block and the second pressing block can be close to each other to press the secondary folding edge of the bending plate.

[0018] Furthermore, it also includes a first die base and a second die base, and the second pressing unit also includes a second driving block, a third reversing block and an elastic pressing mechanism;

[0019] The second driving block is fixedly connected to the first mold base;

[0020] The third reversing block is arranged on the second die base and can move relative to the second die base along the arrangement direction of the secondary bending positions of the bending plate, one end of the elastic pressing mechanism is connected to the second pressing block, and the other end of the elastic pressing mechanism is connected to the third reversing block;

[0021] The second driving block and / or the third commutating block are constructed with a third commutating surface, and the third commutating surface is used to convert the relative movement of the third commutating block toward the first mold base into the movement of the third commutating block along the arrangement direction of the secondary bending position of the bending plate close to the first pressing block.

[0022] A method for manufacturing a bent plate using the bending mechanism as described above comprises the following steps:

[0023] In the mold opening state, the bent plate is placed between the first mold base and the second mold base;

[0024] The first die base is moved closer to the second die base to drive the first slider to bend the transition folding edge of the bending plate along the first direction.

[0025] Furthermore, the operation steps of bringing the first mold base closer to the second mold base to drive the first slider to bend the transition folding edge of the bending plate along the first direction include:

[0026] The first die base is moved closer to the second die base to drive the first pressing block and the second pressing block to contact the secondary folding edge of the bending plate;

[0027] After the first pressing block and the second pressing block are in contact with the secondary folding edge of the bending plate, the first die base is moved closer to the second die base so that the elastic pressing mechanism presses against the second pressing block;

[0028] After the elastic pressing mechanism presses against the second pressing block, the first die base continues to approach the second die base so that the first slide block bends the transition fold along the first direction.

[0029] A bending plate manufactured by the method as described above, characterized in that the bending plate is circumferentially structured with a bent primary folded edge, bent secondary folded edges are constructed at both ends of the bending plate, a bent transition folded edge is constructed at the secondary bending position of the bending plate, and the primary folded edge is discontinuous at the position of the transition folded edge.

[0030] Compared with the prior art, the present invention provides a bending mechanism, a method for making a bending plate using the bending mechanism, and a bending plate. The bending plate used for bending by the bending mechanism of the present invention is also different from the prior art. A transition fold is set at the secondary bending position of the bending plate. When the primary fold is bent, the transition fold is not bent, and the circumferential primary fold is disconnected and discontinuous at the secondary bending position. After the primary fold is bent, when the secondary bending is performed, since the primary fold is disconnected at the secondary bending position, when the secondary fold is bent, it will not bulge outward at the intersection of the secondary bending position and the primary fold due to the extrusion of the primary fold. The transition fold that has not been bent is finally bent by the bending mechanism of the present invention. The bending mechanism includes a first slider unit, and the first slider unit includes a first slider that can move along a first direction. The first slider moves along the first direction to extrude the transition fold so that the transition fold is bent along the first direction. The first direction and the bending direction of the primary fold of the bending plate point to the same side of the bending plate. In this way, while completing the bending of all the folded edges of the bent plate, the technical problem of the product bulging outward at the intersection of the secondary bending position and the primary folded edge, which affects the appearance of the product, is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0032] Figure 1 The figure shows the position where the bending plate in the prior art produces the external bulging phenomenon when performing secondary bending;

[0033] Figure 2 It is a schematic diagram of cutting the original plate in the process of manufacturing the bent plate according to the embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of bending the primary folding edge of the bending plate in the process of manufacturing the bending plate according to an embodiment of the present invention;

[0035] Figure 4 for Figure 3 A-direction view in the figure;

[0036] Figure 5 A schematic diagram of bending a secondary folding edge of a bent plate during the process of manufacturing the bent plate according to an embodiment of the present invention;

[0037] Figure 6 for Figure 5 D-direction view;

[0038] Figure 7 It is a schematic diagram of a state in which the bending plate of the embodiment of the present invention is in a state where the secondary folding edge is bent but the transition folding edge has not yet been bent;

[0039] Figure 8 for Figure 7 E-direction view;

[0040] Fig. 9 This is a schematic diagram of the overall structure of the bending mechanism of an embodiment of the present invention. To avoid excessive stacking of lines, this figure omits some repeated components. For example, a first slider unit is provided at each of the four transition folding edges, while only one first slider unit is illustrated in the figure. Also, there is a second pressing unit at each of the left and right ends in the figure, while only the second pressing unit on the right side is illustrated in the figure.

[0041] Fig.10 It is a top view of the bending mechanism of the embodiment of the present invention, which illustrates the relative positions of various components in the horizontal direction;

[0042] Figure 11-Figure 17 The bending mechanism of the embodiment of the present invention is Figure 7 Schematic diagram of the process of bending the transition edge of the bending plate shown.

[0043] In the drawings, identical objects are denoted by identical reference numerals, and the drawings are not drawn to scale. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] The manufacturing process of the bending plate 100 of this embodiment is as follows: Figure 2-Figure 8 As shown, Fig. 9 , Fig.10 As shown, this embodiment provides a bending mechanism, which includes a first slider unit, wherein the first slider unit includes a first slider 2 that can move along a first direction H, and the first slider 2 is used to squeeze the transition fold 104 of the bending plate 100 so that the transition fold 104 is bent along the first direction H, and the first direction H and the bending direction of the primary fold 102b of the bending plate 100 point to the same side of the bending plate 100.

[0046] Since the transition fold 104 of the bending plate 100 disconnects the primary fold 102b, the circumferential primary fold 102b is discontinuous, and the product will not bulge outward during the secondary bending. After the secondary bending, the last unbent transition fold 104 is bent by the bending mechanism of this embodiment, thereby realizing the bending of all the folds of the bending plate 100. The final bent plate 100 product is beautiful, which well solves the problem of the bending plate 100 in the prior art bulging outward at the intersection of the secondary bending position and the primary fold, affecting the appearance.

[0047] Preferably, the first slider unit also includes a first commutating block 9 arranged opposite to the first slider 2, and the first slider 2 and / or the first commutating block 9 are constructed with a first commutating surface 201, and the first commutating surface 201 is used to convert the movement of the first slider 2 toward the first commutating block 9 into the movement of the first slider 2 along the first direction H.

[0048] The first commutating surface 201 of the first slider 2 is parallel to the first commutating surface 201 of the first commutating block 9. The angle between the relative arrangement direction of the first slider 2 and the first commutating block 9 and the first commutating surface of the first slider 2 is 45 degrees. The first direction H is parallel to the first commutating surface 201 of the first slider 2.

[0049] The bending mechanism of this embodiment further includes a first die base 1 and a second die base 8, the first slider unit further includes a slider mounting seat 3, the slider mounting seat 3 is fixedly connected to the first die base 1, the first slider 2 is mounted on the slider mounting seat 3 and can move along the arrangement direction of the secondary bending position 1031 of the bending plate 100. The first reversing block 9 is fixedly connected to the second die base 8.

[0050] The first slider unit also includes a first fixed seat 7 and a first reset mechanism 20. The first fixed seat 7 is fixedly connected to the first mold base 1, the first reset mechanism 20 is installed on the first fixed seat 7, and the movable end of the first reset mechanism 20 is connected to the first slider 2. The first reset mechanism 20 can be a reset spring. During the bending process of the transition fold 104, the first slider 2 gradually moves away from the first fixed seat 7 along the first direction H. After the bending of the transition fold 104 is completed, when the first mold base 1 and the second mold base 8 move away from each other, the first slider 2 is reset under the action of the first reset mechanism 20 so that the first slider 2 gradually moves closer to the first fixed seat 7 and finally returns to the initial position of the first slider 2.

[0051] A notch adapted to the shape of the transition fold can be constructed on the first slide 2 so as to facilitate extrusion bending of the transition fold through the notch of the first slide 2 .

[0052] like Figure 7 , Fig.10 As shown, the bending plate 100 of this embodiment has four transition folds. For each transition fold, a first slider unit is provided for bending the transition fold, and there are four first slider units in total.

[0053] The bending mechanism of this embodiment also includes a pressing unit, and the pressing unit includes a first pressing unit and a second pressing unit. The first pressing unit and the second pressing unit are close to each other for clamping the secondary folding edge 103b. The first pressing unit includes a first pressing block 10, a first driving block 5, a second reversing block 14 and a movable mounting component. The movable mounting component of this embodiment includes a mounting plate 11 and a second slider 12, and the second slider 12 is arranged between the mounting plate 11 and the second die base 8, and the second slider 12 is fixedly connected to the mounting plate 11. A first wear-resistant part 13 is arranged on the second die base 8, and the first wear-resistant part 13 is provided with an oil groove for lubricating the contact surface between the second slider 12 and the first wear-resistant part 13. The first wear-resistant part 13 is located within the stroke range of the second slider 12, and the second slider 12 can move relative to the second die base 8 along the arrangement direction of the secondary bending position 1031 of the bending plate 100. The first pressing block 10 is fixedly connected to the mounting plate 11, and the second reversing block 14 is fixedly connected to the mounting plate 11. The second reversing block 14 is located outside the coverage range of the bending plate 100, so that the first driving block 5 and the second reversing block 14 contact and move with each other, thereby driving the mounting plate 11 to move, and driving the first pressing block 10 installed on the mounting plate 11 to move along the arrangement direction of the secondary bending position 1031 of the bending plate 100. The first pressing block 10 moves along the arrangement direction of the secondary bending position 1031 of the bending plate 100 so that the first pressing block 10 abuts against the secondary bending position 1031 of the bending plate 100. The first driving block 5 and / or the second commutating block 14 are configured with a second commutating surface 202, and the second commutating surface 202 is used to convert the relative movement of the second commutating block 14 toward the first die holder 1 into the movement of the second commutating block 14 along the arrangement direction of the secondary bending position 1031 of the bending plate 100, thereby driving the mounting plate 11 of the mobile mounting component and the first pressing block 10 mounted on the mounting plate 11 of the mobile mounting component to move. The first driving block 5 of this embodiment is fixedly connected to the first die holder 1.

[0054] The first pressing unit further includes a second reset mechanism 204 and a second fixing seat for mounting the second reset mechanism, and the movable end of the second reset mechanism 204 is connected to the mounting plate 11. In the mold-closed state, the mounting plate 11 is away from the second fixing seat, and in the mold-open state, the mounting seat 11 is close to the second fixing seat under the action of the second reset mechanism 204 and resets to the initial position of the mounting seat 11.

[0055] The second pressing unit includes a second pressing block 15 , the first pressing block 10 and the second pressing block 15 are arranged opposite to each other, and the first pressing block 10 and the second pressing block 15 can be close to each other to press the secondary folding edge 103 b of the bent plate 100 .

[0056] The second pressing unit also includes a second driving block 18, a third reversing block 17 and an elastic clamping mechanism 203; the second driving block 18 is fixedly connected to the first die base 1; the third reversing block 17 is arranged on the second die base 8 and can move relative to the second die base 8 along the arrangement direction of the secondary bending position 1031 of the bending plate 100, one end of the elastic clamping mechanism 203 is connected to the second pressing block 15, and the other end of the elastic clamping mechanism 203 is connected to the third reversing block 17; the second driving block 18 and / or the third reversing block 17 are constructed with a third reversing surface 205, and the third reversing surface 205 is used to convert the relative movement of the third reversing block 17 toward the first die base 1 into the movement of the third reversing block 17 along the arrangement direction of the secondary bending position 1031 of the bending plate 100 close to the first pressing block 10, so that the first pressing block 10 and the second pressing block 15 are close to each other and the secondary folding edge is clamped.

[0057] The second pressing unit further includes a second reset mechanism 206 and a third fixed seat 19 for mounting the second reset mechanism 206. The movable end of the second reset mechanism 206 is connected to the third reversing block 17. The second driving block 18 contacts the third reversing block 17 to generate a lateral force. When the second driving block 18 contacts the third reversing block 17, the second driving block 18 abuts against the third fixed seat 19 to reduce and offset the lateral force.

[0058] In this embodiment, each reset mechanism and spring pressing mechanism can be a reset spring.

[0059] The present embodiment has two secondary bending positions 1031, forming two secondary folding edges 103b. Correspondingly, a pressing unit is provided at each secondary folding edge for clamping the secondary folding edge. The present embodiment has two pressing units in total. Fig.10 The second pressing blocks 15 of the second pressing unit of the pressing unit respectively located at the left and right ends are shown.

[0060] The bending mechanism of this embodiment also includes a first template 4 and a second template 6 respectively located on both sides of the bending plate. The first template 4 is located on the side of the bending plate 100 facing the first die base 1, and the second template 6 is located on the side of the bending plate 100 facing the second die base 8. The second template 6 is located between the two first pressing blocks 10. The first template 4 and the second template 6 are close to each other to press the bending plate 100.

[0061] This embodiment provides a method for manufacturing a bent plate according to the bending mechanism as described above, the method comprising the following steps:

[0062] In the mold opening state, the bent plate 100 is placed between the first mold base 1 and the second mold base 8;

[0063] The first mold base 1 is moved closer to the second mold base 8 to drive the first slider 2 to bend the transition folding edge 104 of the bending plate 100 along the first direction H.

[0064] In this method, the transition fold 104 is bent by moving the first slider 2 along the first direction H.

[0065] The operation steps of bringing the first die holder 1 closer to the second die holder 8 to drive the first slider 2 to bend the transition folding edge 104 of the bending plate 100 along the first direction H include:

[0066] The first die holder 1 is moved closer to the second die holder 8 to drive the first pressing block 10 and the second pressing block 15 to contact the secondary folding edge 103b of the bending plate 100;

[0067] After the first pressing block 10 and the second pressing block 15 are in contact with the secondary folding edge 1031 of the bending plate 100, the first die base 1 continues to approach the second die base 8 so that the elastic pressing mechanism 203 presses against the second pressing block 15;

[0068] After the elastic pressing mechanism 203 presses against the second pressing block 15 , the first die base 1 continues to approach the second die base 8 so that the first sliding block 2 bends the transition fold 104 along the first direction H.

[0069] The specific method flow is as follows Figure 11-17 As shown, Fig.11 It shows that the bent plate 100 is placed between the first die base 1 and the second die base 8 in the mold opening state; Fig.12 It shows that the first die holder 1 is close to the second die holder 8, the first driving block 5 drives the second reversing block 14 to move and then drives the first pressing block 10 to move to the secondary bending position 1031, and at the same time the second driving block 18 drives the third reversing block 17 to move so that the second pressing block 15 arranged on the third reversing block 17 is close to the secondary folding edge 103b, and the first template 4 and the second template 6 are close to each other to press the bending plate 100 tightly. Fig.12 It is shown that the pressing block 10 first moves to the secondary bending position 1031 and contacts the secondary folding edge 103b. The first die holder 1 continues to move closer to the second die holder 8. Fig.13 As shown, the second pressing block 15 just contacts the secondary folding edge 103b. The first die holder 1 continues to move closer to the second die holder 8. At this time, the third reversing block 17 continues to move toward the secondary folding edge 103b so that the spring pressing mechanism 203 presses the second pressing block 15 by the spring force, so that the first pressing block 10 and the second pressing block 15 press the secondary folding edge 103b. Fig.14As shown, the second pressing block 15 presses the secondary fold 103b to the maximum extent. At this time, the first slide block 2 gradually moves along the first direction H to a position closer to the transition fold 104 during the previous pressing process. The first die holder 1 continues to move closer to the second die holder 8. Fig.15 As shown, the first slide block 2 moves along the first direction H until it just contacts the transition fold 104; the first die holder 1 continues to move closer to the second die holder 8 until Fig.16 The figure shows the process of bending the transition fold 104; the first die holder 1 continues to move closer to the second die holder 8 until Fig.17 As shown, the transition fold 104 is bent and the bending mechanism is in a closed mold state.

[0070] The present embodiment provides a bending plate, wherein the circumferential structure of the bending plate 100 is provided with a bent primary folded edge 102b, and bent secondary folded edges 103b are constructed at both ends of the bending plate 100. A bent transition folded edge 104 is constructed at the secondary bending position 1031 of the bending plate 100, and the primary folded edge 102b is discontinuous at the position of the transition folded edge 104.

[0071] The bending plate of this embodiment has a circumferential primary fold 102b that is disconnected at the position of the transition fold 104. Therefore, when performing secondary bending, the primary folds 102b will not be squeezed against each other and bulge outward at the secondary bending position. The transition fold 104 that has not yet been bent is bent by a bending mechanism to obtain the bending plate of this embodiment. When all the folds are bent, the bending plate of this embodiment will not have the problem of product bulging outward, which well solves the defects in the prior art.

[0072] The process of making the bending plate required for bending by the bending mechanism of this embodiment is as follows: Figure 2-Figure 8 shown. Figure 2 The blanking of the original plate, the portion between the dotted line and the solid line in the figure is the material 101 that needs to be removed; Figure 3 The figure shows a schematic diagram of primary bending of a blanked sheet material, wherein the portion between the dotted line and the solid line is a first material to be bent 102a, and the first material to be bent 102a is bent at a primary bending position 1021 to obtain a primary folding edge 102b. Since the bending is vertically downward, the primary bending position 1021 is also the position of the primary folding edge 102b after bending; Figure 4 for Figure 3 A-direction view; Figure 5 103a is a schematic diagram of secondary bending, the portion between the dotted line and the solid line is the second material to be bent 103a, and the second material to be bent 103a is bent at the secondary bending position 1031 to obtain a secondary folding edge 103b; Figure 6 Figure 5 D-direction view; Figure 7The structure of the bent plate after the secondary bending in which the transition edge 104 has not yet been bent is shown; Figure 8 for Figure 7 E-direction view. Figure 7 , Figure 8 The bent plate shown is placed in the bending mechanism of this embodiment, and the transition folding edge 104 is bent, thereby completing all the folding edges of the bent plate 100 and obtaining a qualified bent plate product without external bulges.

[0073] The height of the primary hem in this embodiment is usually relatively small, such as a small hem or a small bend, and the height of the secondary hem is usually relatively large, such as a large hem or a large bend.

[0074] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and some or all of the technical features may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no logical or structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bent plate, characterized in that: The circumferential structure of the bending plate is a primary folding edge, the two ends of the bending plate are secondary folding edges, the secondary bending position of the bending plate is a transition folding edge, and the primary folding edge is discontinuous at the transition folding edge position; When the primary fold is bent, the transition fold is not bent, and the circumferential primary fold is disconnected and discontinuous at the secondary bending position; after the primary fold is bent, the secondary fold is bent; after the secondary bending, the transition fold that has not been bent is bent by a bending mechanism; Wherein, the bending mechanism comprises a first slider unit, the first slider unit comprises a first slider capable of moving along a first direction, the first slider is used to squeeze the transition fold of the bending plate so that the transition fold is bent along the first direction, and the first direction and the bending direction of the primary fold of the bending plate point to the same side of the bending plate; The first slider unit further includes a first commutation block arranged opposite to the first slider, the first slider and / or the first commutation block is configured with a first commutation surface, and the first commutation surface is used to convert the movement of the first slider toward the first commutation block into the movement of the first slider along the first direction; The bending mechanism also includes a first die base and a second die base, and the first slider unit also includes a slider mounting seat; the slider mounting seat is fixedly connected to the first die base, and the first slider is mounted on the slider mounting seat and can move along the arrangement direction of the secondary bending position of the bending plate; the first reversing block is fixedly connected to the second die base.

2. The bent plate according to claim 1, characterized in that: The first commutation surface of the first slider is parallel to the first commutation surface of the first commutation block. The angle between the relative arrangement direction of the first slider and the first commutation block and the first commutation surface of the first slider is 45 degrees. The first direction is parallel to the first commutation surface of the first slider.

3. The bent plate according to claim 1, characterized in that: The first slider unit also includes a first fixing seat and a first resetting mechanism; The first fixing seat is fixedly connected to the first mold base, the first reset mechanism is installed on the first fixing seat, and the movable end of the first reset mechanism is connected to the first sliding block.

4. The bent plate according to any one of claims 1 to 3, characterized in that: It also includes a pressing unit, which includes a first pressing unit, and the first pressing unit includes a first pressing block. The first pressing block can move along the arrangement direction of the secondary bending position of the bending plate so that the first pressing block abuts against the secondary bending position of the bending plate.

5. The bent plate according to claim 4, characterized in that: It also includes a first die base and a second die base, and the first pressing unit also includes a first driving block, a second reversing block and a movable mounting component; The first driving block is fixedly connected to the first mold base; The second reversing block and the first pressing block are both fixedly connected to the movable mounting component, and the movable mounting component is arranged on the second die base and can move relative to the second die base along the arrangement direction of the secondary bending positions of the bending plate; The first driving block and / or the second commutating block is constructed with a second commutating surface, and the second commutating surface is used to convert the relative movement of the second commutating block toward the first die base into the movement of the second commutating block along the arrangement direction of the secondary bending position of the bending plate, thereby driving the movable mounting component and the first pressing block installed on the movable mounting component to move.

6. The bent plate according to claim 4, characterized in that: The pressing unit also includes a second pressing unit, the second pressing unit includes a second pressing block, the first pressing block and the second pressing block are arranged opposite to each other, and the first pressing block and the second pressing block can approach each other to press the secondary folding edge of the bent plate.

7. The bent plate according to claim 6, characterized in that: It also includes a first die base and a second die base, and the second pressing unit also includes a second driving block, a third reversing block and an elastic pressing mechanism; The second driving block is fixedly connected to the first mold base; The third reversing block is arranged on the second die base and can move relative to the second die base along the arrangement direction of the secondary bending positions of the bending plate, one end of the elastic pressing mechanism is connected to the second pressing block, and the other end of the elastic pressing mechanism is connected to the third reversing block; The second driving block and / or the third commutating block are constructed with a third commutating surface, and the third commutating surface is used to convert the relative movement of the third commutating block toward the first mold base into the movement of the third commutating block along the arrangement direction of the secondary bending position of the bending plate close to the first pressing block.

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