Elevator door panel bending device

Abstract

The present invention discloses an elevator door panel bending device, comprising a bending die fixed on a machine base, a main bending knife which can be raised and lowered is arranged above the bending die, the bending die and the main bending knife cooperate to complete the edge bending of a door panel workpiece; an angle bending knife is arranged next to the main bending knife corresponding to the angle of the door panel workpiece, and an auxiliary bending part is laterally extended from the side of the angle bending knife; a guiding inclined position toward the upper outer side of the door panel workpiece is arranged between the main bending knife and the angle bending knife; through the combined bending knife design of the main bending knife and the angle bending knife, the bending knife can complete the bending process of the other side of the door panel workpiece without hitting the original bending edge during the bending process.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, in particular to a bending device used for manufacturing elevator door panels. Background Art

[0002] In the production of elevator door panels, the periphery of the elevator door panels needs to be bent. However, once the four sides of the elevator door panel need to be bent, the corners will hinder each other and cannot be bent. To solve this problem, either only bend the two opposite sides and leave the other two sides unbent, or Figure 1 As shown, a portion of the edge of the board is cut off to leave space for the four edges to bend. Obviously, this operation will affect the frame strength of the door panel and needs to be improved. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an elevator door panel bending device.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An elevator door panel bending device comprises a bending die fixed on a machine base, a main bending knife which can be raised and lowered is arranged above the bending die, and the bending die cooperates with the main bending knife to complete the edge bending of the door panel workpiece; a corner bending knife is arranged next to the main bending knife to correspond to the corner of the door panel workpiece, and an auxiliary bending part is extended laterally from the side of the corner bending knife; a guiding inclined position is arranged between the main bending knife and the corner bending knife, facing the upper outer side of the door panel workpiece.

[0006] As some embodiments of the present invention, a connecting rod is connected between the main bending knife and the corner bending knife via a rotating shaft, and a balancing piece is provided on the corner bending knife.

[0007] As some embodiments of the present invention, a transverse parallel portion is provided at a lower end of the balancing member.

[0008] As some embodiments of the present invention, a spring plunger is distributed at the lower end of the balancing member, and a horizontal alignment plate that can be translated is arranged below the balancing member to correspond to the spring plunger.

[0009] As some embodiments of the present invention, a return spring is provided on the horizontal alignment plate.

[0010] As some embodiments of the present invention, an alignment plate guide slider is provided at the lower end of the horizontal alignment plate.

[0011] As some embodiments of the present invention, fixed guide members are provided on the front and rear sides of the balancing member.

[0012] As some embodiments of the present invention, a horizontal pressing surface is provided between the main bending knife and the upper end of the corner bending knife.

[0013] The beneficial effect of the present invention is that through the combined bending knife design of the main bending knife and the corner bending knife, the bending knife does not hit the original bending edge during the bending process, so as to complete the bending process of the other side of the door panel workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional picture of the door panel workpiece processed by the original technology;

[0016] Figure 2 is a stereogram of the present invention;

[0017] Figure 3 It is a working schematic diagram of the present invention;

[0018] Figure 4 It is a three-dimensional diagram of a door panel workpiece processed by the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. In order to thoroughly understand the present invention, some specific details will be involved in the following description. In the absence of these specific details, the invention can still be implemented, that is, those skilled in the art can use these descriptions and statements here to more effectively introduce the essence of their work to other technicians in the field.

[0020] Reference Figure 2 , an elevator door panel bending device, including a bending die 300 fixed on a machine base 200, a main bending knife 400 that can be lifted up and down is arranged above the bending die 300, and the bending die 300 and the main bending knife 400 cooperate to complete the edge bending of the door panel workpiece 100. That is, during the bending process, the bending die 300 is fixed, and the main bending knife 400 applies downward pressure to achieve the bending of the door panel workpiece 100. The shape of the bending die 300 is determined according to the shape requirements of the elevator door panel, and the main bending knife 400 can control the lifting and lowering activities through a motor, a power cylinder or other devices. For details, please refer to other bending devices, which will not be described one by one here.

[0021] A corner bending knife 500 is arranged next to the main bending knife 400 to correspond to the corner of the door panel workpiece 100, and an auxiliary bending portion 510 extends laterally from the side of the corner bending knife 500. The auxiliary bending portion 510 can move relative to the door panel workpiece 100 along with the corner bending knife 500. The corner bending knife 500 including the auxiliary bending portion 510 is assembled with the main bending knife 400 to form a complete bending knife, that is, the corner bending knife 500 including the auxiliary bending portion 510 and the lower bending blade of the main bending knife 400 are spliced ​​into a complete bending blade as a working surface, which cooperates with the bending die 300 to complete the stamping work.

[0022] A guide angle 600 is provided between the main bending knife 400 and the corner bending knife 500, which is directed toward the upper and outer sides of the door panel workpiece 100. Figure 3 When the main bending knife 400 presses down the door panel workpiece 100, the corner bending knife 500 moves sideways along the guide oblique part 600, and the auxiliary bending part 510 can extend into the previously bent edge 110 of the door panel workpiece 100. In this way, the bending knife can complete the bending process of the other side of the door panel workpiece 100 without hitting the original bending edge 110.

[0023] Reference Figure 4 After the bending, the four sides of the door panel workpiece 100 can complete the bending edge 110. The specific shape of the bending edge 110 depends on the bending die 300 and the bending blade of the bending knife. For details, please refer to the bending process of the similar bending device, which will not be listed here one by one.

[0024] As a preferred option, a horizontal pressure surface 610 is provided between the upper ends of the main bending knife 400 and the corner bending knife 500, so that when the main bending knife 400 is pressed down to perform the bending process, the main bending knife 400 can apply sufficient downward pressure to the corner bending knife 500 through the horizontal pressure surface 610 to ensure that the entire bending knife performs the bending process synchronously.

[0025] The guiding oblique position 600 between the main bending knife 400 and the corner bending knife 500 can be set as an oblique guide groove that interlocks with each other. The guiding oblique position 600 can also be set as a smooth guide surface and cooperate with a limiting mold to complete the guidance between the main bending knife 400 and the corner bending knife 500. A return spring can also be set between the main bending knife 400 and the corner bending knife 500, or other existing guiding structures with similar functions can be set. For details, please refer to the structure of similar molds, which are not listed here one by one.

[0026] When the bending knife needs to be lifted, the main bending knife 400 is lifted, and the corner bending knife 500 is withdrawn laterally until the auxiliary bending portion 510 is completely withdrawn from the bending edge 110, and then the main bending knife 400 and the corner bending knife 500 continue to rise to finally complete the resetting of the bending knife. In this way, the bending knife will not hit the original bending edge 110 when it is lifted.

[0027] The main bending knife 400 and the corner bending knife 500 are connected by a connecting rod 700 via a rotating shaft, that is, the main bending knife 400 and the connecting rod 700, and the corner bending knife 500 and the connecting rod 700 can rotate along the rotating shaft. Of course, the rotating shaft can be replaced by a bearing or other components with similar functions, which does not affect the realization of the above technology. A balancing member 520 is provided on the corner bending knife 500, and the balancing member 520 applies a downward pulling force to the corner bending knife 500 to ensure that the lower bending blade of the corner bending knife 500 remains in a horizontal state to ensure the bending effect.

[0028] A transverse parallel portion 521 is provided at the lower end of the balancing member 520 , so that the balancing member 520 is in an inverted T shape, so as to ensure the horizontal adjustment effect of the balancing member 520 on the diagonal bending knife 500 .

[0029] A spring plunger 522 is distributed at the lower end of the balancing member 520, and a horizontal alignment plate 800 that can be translated is arranged below the balancing member 520 to correspond to the spring plunger 522. Figure 3 When the main bending knife 400 presses down the door panel workpiece 100, the balancing member 520 and the corner bending knife 500 descend together, and the spring plunger 522 abuts against the horizontal alignment plate 800. The spring plunger 522 itself plays a buffering role, and at the same time, it also cooperates with the spring plunger 522 to support the balancing member 520 relative to the horizontal alignment plate 800, so that the lower bending blade of the corner bending knife 500 remains in a horizontal state. When the main bending knife 400 continues to descend and the corner bending knife 500 moves horizontally, the horizontal alignment plate 800 can move horizontally with it, that is, there must be enough friction between the horizontal alignment plate 800 and the spring plunger 522, so that the corner bending knife 500 can be guaranteed to move horizontally when the bending knife is advancing or retreating. When the main bending knife 400 continues to cut and the bending blades of the corner bending knife 500 and the main bending knife 400 are not on the same working surface, the working surface of the corner bending knife 500 does not touch the workpiece due to the support of the horizontal alignment plate 800, thereby ensuring the positioning accuracy, especially ensuring that the corner bending knife 500 will not skew the door panel workpiece 100 due to non-parallelism when withdrawing, thereby affecting the bending process of the door panel workpiece 100.

[0030] The horizontal alignment plate 800 is provided with a return spring 810, so that the horizontal alignment plate 800 can be reset after the bending knife is retracted. The lower end of the horizontal alignment plate 800 is provided with an alignment plate guide slider 820 to ensure that the horizontal alignment plate 800 does not deviate during the translation process.

[0031] Fixed guide members 523 are provided at the front and rear sides of the balancing member 520 to guide the balancing member 520 to be lifted and lowered without deviation, thereby ensuring the accuracy of the movement of the corner bending knife 500.

[0032] According to the above principle, the present invention can also make appropriate changes and modifications to the above implementation. Therefore, the present invention is not limited to the specific implementation disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention.

Claims

1. An elevator door panel bending device, comprising a bending die (300) fixed on a machine base (200), a main bending knife (400) which can be lifted up and down is arranged above the bending die (300), the bending die (300) and the main bending knife (400) cooperate to complete the edge bending of a door panel workpiece (100), characterized in that: A corner bending knife (500) is arranged next to the main bending knife (400) to correspond to the corner of the door panel workpiece (100), and an auxiliary bending portion (510) extends laterally from the side of the corner bending knife (500); A guiding oblique part (600) is provided between the main bending knife (400) and the corner bending knife (500) and is directed toward the upper outer side of the door panel workpiece (100); A connecting rod (700) is connected between the main bending knife (400) and the corner bending knife (500) via a rotating shaft, and a balancing piece (520) is provided on the corner bending knife (500); A spring plunger (522) is distributed at the lower end of the balancing member (520), and a horizontal alignment plate (800) that can be translated is arranged below the balancing member (520) and corresponds to the spring plunger (522); Fixed guide members (523) are provided on the front and rear sides of the balancing member (520).

2. An elevator door panel bending device according to claim 1, characterized in that: A transverse parallel portion (521) is provided at the lower end of the balancing member (520).

3. The elevator door panel bending device according to claim 1, characterized in that: A return spring (810) is provided on the horizontal alignment plate (800).

4. The elevator door panel bending device according to claim 1, characterized in that: An alignment plate guide sliding block (820) is provided at the lower end of the horizontal alignment plate (800).

5. The elevator door panel bending device according to claim 1, characterized in that: A horizontal pressing surface (610) is provided between the upper ends of the main bending knife (400) and the corner bending knife (500).

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