Bending device for stainless steel elevator door plate

Abstract

The utility model discloses a stainless steel elevator door plate bending device which comprises a conveying assembly, a bending assembly and a bending assembly. The top pressing assembly comprises a top pressing block, and the bottom surface of the top pressing block is horizontal; the jacking assembly comprises a top plate and a jacking unit for driving the top plate to ascend and descend; and the bending assembly comprises bending units in one-to-one correspondence with the four sides of the plate, each bending unit comprises a bending piece and a lifting unit, and the moving path of each bending piece is separated from the conveying belt. According to the bending device for the stainless steel elevator door plate, continuous conveying of the plate is achieved through the conveying assembly, after the plate is jacked up through the jacking assembly and clamped and fixed through the jacking assembly in cooperation, the bending assemblies on the four sides bend the four sides of the fixed plate at the same time, the angle of the plate does not need to be adjusted, and after bending is completed, the plate is bent. And the top plate descends, so that the bent plate can conveniently fall on the conveying belt to be conveyed, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator door panel production, in particular to a bending device for a stainless steel elevator door panel. Background Art

[0002] In the processing and production of elevator door panels, bending is an important process link, which affects the final shape and structural strength of the door panels. According to design requirements, the side of the elevator door panel can be bent in various forms, including but not limited to L-shaped and C-shaped cross-sections.

[0003] In the prior art, for example, a Chinese utility model patent with announcement number CN209886521U discloses an elevator door panel processing and bending mechanism. When bending the elevator door panel, the side of the elevator door panel is changed through the coordinated use of a motor, a bearing, a ball bearing and an operating table. The elevator door panel is pressed during bending to prevent the elevator door panel from suddenly lifting up and accidentally injuring workers.

[0004] Although the above-mentioned device can bend elevator door panels, it can only bend one side of the panel at a time, so it is necessary to change sides, adjust the position and direction during processing, resulting in low processing efficiency. In addition, the side shape of the elevator door panels processed by the device is fixed and single, and can only be processed into L shape, not C shape. The processed elevator door panels are of single variety and have a small scope of application, making it difficult to meet the different needs of customers.

[0005] Therefore, it is necessary to improve the bending device of the stainless steel elevator door panel in the prior art. Utility Model Content

[0006] The utility model aims to overcome the defects in the prior art and provide a bending device for stainless steel elevator door panels which improves processing efficiency and is suitable for different sizes, is convenient for bending into different shapes, and has a wider range of applications.

[0007] In order to achieve the above technical effects, the technical solution of the utility model is: a bending device for a stainless steel elevator door panel, comprising:

[0008] A transmission assembly, the transmission assembly comprising a transmission belt arranged horizontally and arranged side by side in a horizontal direction and a driving unit driving the transmission belt to rotate along its own circumferential direction to drive the plate to translate;

[0009] A pressing assembly, the pressing assembly comprising a pressing block, the bottom surface of the pressing block being a pressing surface horizontally arranged above the conveyor belt;

[0010] A lifting assembly, the lifting assembly comprising a top plate horizontally arranged just below the top pressing block and between the conveyor belts, and a lifting unit driving the top plate to rise and fall so as to cooperate with the top pressing block to clamp the plate;

[0011] Bending assembly, the bending assembly includes bending units corresponding to the four sides of the sheet one by one. The bending unit includes a bending member and a lifting unit for driving the bending member to move up and down. The moving path of the bending member is separated from the conveyor belt.

[0012] Preferably, in order to facilitate bending of sheets with different lengths and widths, the pressing block includes a middle pressing block fixedly arranged directly above the top plate and side pressing strips arranged on the four sides of the middle pressing block and corresponding to the four sides of the sheet one by one. The bottom surfaces of the middle pressing block and the side pressing strips are both arranged on the pressing surface. The pressing assembly further includes an adjusting unit for adjusting the distance between the side pressing strip and the middle pressing block.

[0013] Preferably, in order to ensure the bending quality, the plane where the side of the side pressing strip facing away from the middle pressing block is located is a vertical plane, and the sides of adjacent side pressing strips facing away from the middle pressing block are perpendicular to each other.

[0014] Preferably, in order to realize the position adjustment of the side pressing strip, thereby changing the distance between the side pressing strip and the middle pressing block, the adjusting unit includes an adjusting motor. The output shaft of the adjusting motor is arranged vertically and coaxially connected with a screw rod. The screw rod is threadedly connected with a screw sleeve. The screw sleeve is hinged to the side pressing strip through a connecting rod. The side pressing strip is slidably connected with the middle pressing block in a horizontal direction perpendicular to its own length direction.

[0015] Preferably, in order to be able to bend the sides of the sheet into different shapes, the bending assembly further includes a position adjusting unit for adjusting the position of the bending unit to correspond to the side pressing strip.

[0016] Preferably, in order to realize the change of the position of the bending unit, the position adjusting unit includes a position adjusting motor. The output shaft of the position adjusting motor is arranged vertically and coaxially fixedly connected with a position adjusting disc. The position adjusting disc is connected with the bending unit through a transmission rod.

[0017] Preferably, in order to facilitate bending of the sides of the sheet, the bending member includes a bending strip horizontally arranged at the output end of the lifting unit and a bending roller axially consistent with the length direction of the bending strip and rotating around its own axis directly above the bending strip. The surface of the bending strip adjacent to the top plate is a vertically arranged bending surface, and the roller surface of the bending roller is tangent to the plane where the bending surface is located.

[0018] Preferably, in order to further facilitate bending of the sides of the sheet and ensure the bending quality, a chamfer is arranged on the surface of the bending strip adjacent to the top plate at the top.

[0019] Preferably, in order to ensure the bending quality, a positioning component is further included. The positioning component is used to intercept the sheet on the conveyor belt, so that the sheet is centered directly above the top plate, and the length direction and width direction of the sheet are respectively consistent with the conveying direction and distribution direction of the conveyor belt.

[0020] Preferably, in order to position the sheet, the positioning component includes a vertically arranged positioning bar and a telescopic unit for driving the positioning bar to move up and down. The projection of the positioning bar on the horizontal plane is L-shaped, and two positioning components are arranged symmetrically along the distribution direction of the conveyor belt.

[0021] In summary, compared with the prior art, the bending device for stainless steel elevator door panels of the present invention uses a transmission component to realize continuous transmission of the sheet. After the sheet is lifted by the jacking component and clamped and fixed by the pressing component, the four sides of the fixed sheet are bent simultaneously by the bending components on the four sides without adjusting the angle of the sheet. After bending is completed, the top plate descends to facilitate the bent sheet to fall on the conveyor belt for transmission, thereby greatly improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of the present invention;

[0023] Figure 2 is a schematic structural view of another perspective of the present invention;

[0024] Figure 3 is Figure 1 an exploded view of;

[0025] Figure 4 is a schematic structural view of the transmission component of the present invention;

[0026] Figure 5 is a schematic structural view of the jacking component of the present invention;

[0027] Figure 6 is a schematic structural view of the pressing component of the present invention;

[0028] Figure 7 is Figure 6 an exploded view of;

[0029] Figure 8 is a schematic structural view of the bending component of the present invention;

[0030] Figure 9 is Figure 8 a top view of;

[0031] Figure 10 is Figure 8 an exploded view of;

[0032] Figure 11 It is a schematic structural diagram of the present utility model in which the jacking assembly and the bending assembly cooperate with each other to bend the four sides of the plate;

[0033] Figure 12 It is a schematic diagram of the present utility model for bending the plate twice;

[0034] Figure 13 It is a schematic diagram of the present utility model for bending the plate once;

[0035] In the figure: 1. Transmission assembly; 11. Transmission belt; 12. Driving unit; 121. Driving motor; 122. Driving shaft; 123. Driving wheel; 124. Driven shaft; 125. Driven wheel; 126. First bearing; 13. Base; 131. Upper bottom plate; 132. Lower bottom plate; 133. Connecting block; 2. Pressing assembly; 21. Pressing block; 211. Middle pressing block; 212. Edge pressing strip; 213. Edge pressing guide rod; 214. Middle pressing guide hole; 22. Adjusting unit; 221. Adjusting motor; 222. Screw rod; 223. Screw sleeve; 224. Connecting rod; 23. Fixed frame; 24. Connecting frame; 3. Jacking assembly; 31. Top plate; 32. Jacking unit; 33. Jacking guide rod; 34. Jacking guide sleeve; 4. Bending assembly; 41. Bending unit; 411. Bending part; 4111. Bending strip; 4112. Bending roller; 4113. Bending surface; 4114. Chamfer; 412. Lifting unit; 413. Sliding sleeve; 414. Sliding rod; 415. Bending seat; 416. Slide rail; 42. Positioning unit; 421. Positioning motor; 422. Positioning disc; 423. Transmission rod; 424. Second bearing; 5. Positioning assembly; 51. Positioning strip; 52. Telescopic unit; 6. Plate. Specific embodiments

[0036] The following combines the drawings and embodiments to further describe the specific embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0037] As Figures 1-11 shown, the bending device for the stainless steel elevator door panel of the present utility model includes:

[0038] A transmission assembly 1, the transmission assembly 1 includes a horizontally arranged and horizontally distributed transmission belt 11 and a driving unit 12 that drives the transmission belt 11 to rotate along its own circumference to drive the plate 6 to translate, and the transmission direction of the transmission belt 11 is perpendicular to the distribution direction;

[0039] A pressing assembly 2, the pressing assembly 2 includes a pressing block 21, and the bottom surface of the pressing block 21 is a pressing surface horizontally arranged above the transmission belt 11;

[0040] The lifting assembly 3, the lifting assembly 3 includes a top plate 31 horizontally arranged directly below the pressing block 21 and located between the conveyor belts 11, and a lifting unit 32 that drives the top plate 31 to lift and cooperate with the pressing block 21 to clamp the plate 6;

[0041] The bending assembly 4, the bending assembly 4 includes bending units 41 corresponding to the four sides of the plate 6 one by one. The bending unit 41 includes a bending member 411 and a lifting unit 412 that drives the bending member 411 to lift and move. The moving path of the bending member 411 is separated from the conveyor belt 11.

[0042] When the device is in use, the plate 6 to be bent is placed on the conveyor belt 11 of the conveying assembly 1, and the length direction and width direction of the plate 6 are respectively kept consistent with the conveying direction and distribution direction of the conveyor belt 11. The driving unit 12 is started to drive the conveyor belt 11 to rotate along its circumferential direction, so that the conveyor belt 11 drives the plate 6 to move, and the moving direction is consistent with the length direction of the plate 6.

[0043] When the plate 6 moves directly above the lifting assembly 3, the lifting unit 32 in the lifting assembly 3 is started to drive the top plate 31 to move upward, lift the horizontally placed plate 6 upward until the top surface of the plate 6 contacts the bottom surface of the pressing block 21, that is, the pressing surface, so that the plate 6 is clamped and fixed by the pressing block 21 and the top plate 31. During clamping, the length dimension and width dimension of the top plate 31 are both smaller than the length dimension and width dimension of the plate 6, and the length dimension and width dimension of the pressing block 21 are both smaller than the length dimension and width dimension of the plate 6, so that the four-side positions of the plate 6 are exposed, and the central part is clamped and fixed by the top plate 31 and the pressing block 21.

[0044] After the plate 6 is clamped and fixed, the four bending units 41 in the bending assembly 4 are started simultaneously. The lifting unit 412 drives the bending member 411 to move upward, and respectively acts on the bottom surface of the plate 6 near the four side edges one by one. Since the central part of the plate 6 is clamped and fixed by the pressing block 21 and the top plate 31, the exposed parts on the four sides of the plate 6 are bent toward the four sides of the pressing block 21 under the upward extrusion force of the bending member 411 to achieve bending. Since the bending process can act on the four sides of the plate 6 respectively through the four-side bending units 41 for bending, compared with the prior art, it is not necessary to bend the side edges of the plate 6 one by one, nor to adjust the angle and orientation of the plate 6, thus greatly improving the processing efficiency.

[0045] After the bending is completed, the lifting unit 32 drives the top plate 31 to move downward. The bent plate 6 is affected by the gravity and moves downward with the top plate 31. When the top surface of the top plate 31 is lower than the upper layer of the conveyor belt 11, the top plate 31 falls on the conveyor belt 11. At this time, the driving unit 12 is started to drive the conveyor belt 11 to rotate along its circumferential direction, so that the bent plate 6 continues to move and approaches the output end of the conveyor belt 11, facilitating subsequent processing.

[0046] The specific structure of the transmission component 1 of the present utility model is as follows Figure 4 shown. The transmission component 1 includes a base 13. The base 13 includes a lower bottom plate 132 horizontally fixed on the ground and an upper bottom plate 131 horizontally fixed directly above the lower bottom plate 132 through a connecting block 133. The lower bottom plate 132 is a rectangular plate. Two transmission belts 11 are arranged side by side along the width direction of the lower bottom plate 132. The transmission belts 11 are horizontally oval-shaped. The driving unit 12 includes a driving motor 121, a driving shaft 122, a driving wheel 123, a driven shaft 124, a driven wheel 125, and two first bearings 126. Specifically, the driving shaft 122 and the driven shaft 124 are respectively inserted through both ends inside the transmission belt 11. Two driving wheels 123 corresponding to the two transmission belts 11 one by one are coaxially fixed on the driving shaft 122. Two driven wheels 125 corresponding to the two transmission belts 11 one by one are coaxially fixed on the driven shaft 124. The driving wheel 123 is in transmission connection with the driven wheel 125 through the transmission belt 11. Both ends of the driving shaft 122 and the driven shaft 124 are arranged above the upper bottom plate 131 through the first bearings 126. The driving motor 121 is fixed above the lower bottom plate 132, and its output end is coaxially fixedly connected to the driving shaft 122.

[0047] After adopting the above structure, when the driving motor 121 is started, it drives the driving shaft 122 to rotate stably in the first bearing 126, so that the driving wheel 123 rotates around its own axis. The driving wheel 123 is in transmission connection with the driven wheel 125 through the transmission belt 11, so that the transmission belt 11 rotates along its own circumference, facilitating the transmission and movement of the sheet material 6.

[0048] The specific structure of the jacking component 3 is as follows Figure 5 shown. The jacking unit 32 is a jacking oil cylinder. The cylinder barrel of the jacking oil cylinder is arranged vertically upward and fixed above the upper bottom plate 131. A jacking guide rod 33 extending vertically is also fixed below the top plate 31. A jacking guide sleeve 34 extending vertically and slidably engaged with the jacking guide rod 33 is also arranged above the upper bottom plate 131. After the piston rod of the jacking oil cylinder acts, through the slidably engaged jacking guide rod 33 and jacking guide sleeve 34, the top plate 31 moves smoothly in the vertical direction.

[0049] It should be noted that in order to ensure the structural strength and corrosion resistance of the final elevator door panel, the sheet material 6 in the present utility model is preferably made of stainless steel plate.

[0050] A further improvement is that the top pressing block 21 includes a middle pressing block 211 fixedly arranged directly above the top plate 31 and edge pressing strips 212 arranged on four sides of the middle pressing block 211 and corresponding to four sides of the plate 6 one by one. The bottom surfaces of the middle pressing block 211 and the edge pressing strips 212 are both arranged on the top pressing surface. The top pressing assembly 2 further includes an adjusting unit 22 for adjusting the distance between the edge pressing strips 212 and the middle pressing block 211. The plane where the side of the edge pressing strip 212 facing away from the middle pressing block 211 is a vertical plane, and the sides of adjacent edge pressing strips 212 facing away from the middle pressing block 211 are perpendicular to each other. The adjusting unit 22 includes an adjusting motor 221. The output shaft of the adjusting motor 221 is arranged vertically and coaxially connected with a screw rod 222. The screw rod 222 is threadedly connected with a screw sleeve 223. The screw sleeve 223 is hinged to the edge pressing strip 212 through a connecting rod 224. The edge pressing strip 212 is slidably connected with the middle pressing block 211 in a horizontal direction perpendicular to its own length direction.

[0051] The specific structure of the top pressing assembly 2 is as Figure 6 and Figure 7 shown. The top pressing assembly 2 further includes a fixing frame 23 and a connecting frame 24. The fixing frame 23 is of an inverted U-shaped structure, and its two ends are fixed to the ground. The connecting frame 24 is fixed to the inner top of the fixing frame 23. The top pressing block 21 in the top pressing assembly 2 includes a middle pressing block 211 and four edge pressing strips 212. The middle pressing block 211 is integrally in the shape of a flat cuboid. The length direction and width direction of the middle pressing block 211 are respectively consistent with the conveying direction and the distribution direction of the conveyor belt 11. The four edge pressing strips 212 are respectively arranged on four sides of the middle pressing block 211. Two of them extend along the length direction of the middle pressing block 211, and the other two extend along the width direction of the middle pressing block 211. The thickness dimensions of the middle pressing block 211 and the edge pressing strips 212 are the same, and their bottom surfaces are located on the same horizontal plane. The middle pressing block 211 is fixed directly below the inner top of the fixing frame 23 through the connecting frame 24.

[0052] The adjusting unit 22 drives the four edge pressing strips 212 to move simultaneously, and the moving amplitudes are the same. To ensure that the edge pressing strips 212 move in the horizontal direction, a side pressing guide rod 213 is integrally connected to the side of the edge pressing strip 212 adjacent to the middle pressing block 211. The axial direction of the side pressing guide rod 213 is horizontal and perpendicular to the length direction of the edge pressing strip 212. A through-hole-shaped middle pressing guide hole 214 is arranged on the outer periphery of the middle pressing block 211. The middle pressing guide hole 214 is a through-hole and is in sliding fit with the edge pressing strip 212 one by one. The adjusting motor 221 is fixed to the connecting frame 24.

[0053] After adopting the above structure, the positions of the adjusting motor 221 and the middle pressure block 211 can be conveniently fixed and adjusted through the connecting frame 24. After the adjusting motor 221 is started, it drives the screw rod 222 to rotate around its own axis, causing the screw sleeve 223 to move in the vertical direction. Acting on the side pressure strip 212 through the connecting rod 224, under the sliding fit of the side pressure guide rod 213 and the middle pressure guide hole 214, the side pressure strip 212 moves in the horizontal direction perpendicular to its own length direction. In this way, the distance between the side pressure strip 212 and the middle pressure block 211 is changed. There are four side pressure strips 212. When all four side pressure strips 212 move and the moving amplitudes are the same, the four-side positions of the top pressure block 21 can be adjusted to match the length and width dimensions of the plate 6, so as to ensure that when the bending assembly 4 acts, the acting range of the top pressure block 21 is expanded as much as possible. The side of the side pressure strip 212 facing away from the middle pressure block 211 is a vertical plane, and the sides of adjacent side pressure strips 212 facing away from the middle pressure block 211 are perpendicular to each other, so that after bending, as Figure 11 shown, on the side of the side pressure strip 212 facing away from the middle pressure block 211, the bent part can closely adhere to the side of the side pressure strip 212 facing away from the middle pressure block 211, so that the bent part is perpendicular to the central part, improving the bending quality.

[0054] A further improvement is that the bending assembly 4 further includes a position adjusting unit 42, and the position adjusting unit 42 is used to adjust the position of the bending unit 41 to correspond to the side pressure strip 212.

[0055] After adopting the above improvement, the position of the bending unit 41 is adjusted by the position adjusting unit 42 so that the bending unit 41 corresponds to the side pressure strip 212. As Figure 11 shown, after bending, not only can it ensure that the bent part fits between the side pressure strip 212 and the bending unit 41 to ensure the bending quality; moreover, by changing the position of the bending unit 41, the position acting on the plate 6 can be changed, expanding the applicable range; in addition, the number of bending times on the side of the plate 6 can also be changed, thereby changing the cross-sectional shape of the side of the plate 6.

[0056] For example, as Figure 12 shown, the plate 6 is subjected to a total of two bending treatments. Before the first bending, the distance between the side pressure strips 212 and the distance between the bending units 41 are reduced, and the four sides of the plate 6 are simultaneously extruded, so that the four sides of the plate 6 form flanges with an L-shaped cross-section. Then, the distance between the side pressure strips 212 and the distance between the bending units 41 are reduced again. Based on the first bending, the second bending is carried out. After the second bending, flanges with a C-shaped cross-section can be formed on the four sides of the plate 6; of course, it can also be as Figure 13 shown, the plate 6 is only subjected to one bending treatment, so that the four sides of the plate 6 form flanges with an L-shaped cross-section.

[0057] Therefore, after changing the position of the bending unit 41 through the position adjustment unit 42, it can not only be applicable to the processing of different plates 6, but also process the sides of the plates 6 into different shapes to meet different usage requirements, thereby expanding the applicable range of the device and avoiding the cost increase caused by replacing the device.

[0058] A further improvement is that the position adjustment unit 42 includes a position adjustment motor 421. The output shaft of the position adjustment motor 421 is vertically arranged and coaxially fixedly connected with a position adjustment disk 422. The position adjustment disk 422 is connected to the bending unit 41 through a transmission rod 423. The bending member 411 includes a bending bar 4111 horizontally arranged at the output end of the lifting unit 412 and a bending roller 4112 axially aligned with the length direction of the bending bar 4111 and rotating around its own axis directly above the bending bar 4111. The surface of the bending bar 4111 adjacent to the top plate 31 is a vertically arranged bending surface 4113. The roller surface of the bending roller 4112 is tangent to the plane where the bending surface 4113 is located. The top surface of the bending bar 4111 adjacent to the top plate 31 is provided with a chamfer 4114.

[0059] The specific structure of the bending assembly 4 is as Figures 8-10 shown. Among them, the bending unit 41 further includes a horizontal bending seat 415. The bending seat 415 is arranged on the upper bottom plate 131 and the lower bottom plate 132. Above the lower bottom plate 132, a U-shaped slide rail 416 is fixed. The bending seat 415 is slidably sleeved outside the slide rail 416. The lifting unit 412 is a lifting oil cylinder, and its cylinder barrel is vertically fixed above the bending seat 415, and the piston rod faces upward and its top end is fixedly connected to the bottom end of the bending bar 4111. Above the bending seat 415, a slide bar 414 extending in the vertical direction is also fixed. The bottom end of the bending bar 4111 is fixedly connected with a sliding sleeve 413 extending in the vertical direction. The sliding sleeve 413 is slidably matched with the slide bar 414.

[0060] The position adjustment motor 421 is fixed above the upper bottom plate 131, and its output shaft passes downward through the upper bottom plate 131. The position adjustment disk 422 is located between the upper bottom plate 131 and the lower bottom plate 132 and is coaxially fixedly connected to the output shaft of the position adjustment motor 421. A second bearing 424 sleeved outside the output shaft of the position adjustment motor 421 is also arranged between the position adjustment disk 422 and the upper bottom plate 131. The outer ring of the second bearing 424 is fixedly connected to the upper bottom plate 131, and the inner ring is coaxially fixedly connected to the position adjustment disk 422. The position adjustment disk 422 is hinged to the bending seats 415 on four sides through four transmission rods 423 respectively.

[0061] After adopting the above structure, the positioning motor 421 starts, driving the positioning disc 422 to rotate a certain angle around its own axis under the support of the second bearing 424. Through the four transmission rods 423, the positioning disc acts on the bending seats 415 of the four-side bending units 41 respectively. Under the guiding action of the slide rails 416, the bending seats 415 move along the length direction of the slide rails 416, so that the moving directions of the four bending units 41 are the same as those of the corresponding four edge pressing strips 212, and the moving amplitudes of the four bending units 41 are the same, thus ensuring the bending quality.

[0062] When bending, the internal oil pressure of the lifting oil cylinder serving as the lifting unit 412 increases, causing the piston rod to drive the bending strip 4111 to move upward. The bending roller 4112 first contacts the side of the plate 6. As Figure 11 shown, it acts on the side of the plate 6 to drive the side of the plate 6 to bend towards the edge pressing strip 212. Then the bending strip 4111 moves upward. The design of the chamfer 4114 facilitates the upward movement of the bending strip 4111. Finally, after the bending surface 4113 acts on the bent side of the plate 6, the bent part fits against the bending surface 4113 and the side of the edge pressing strip 212 away from the middle pressing block 211, maintaining a perpendicular relationship with the central part of the plate 6, thus improving the bending quality.

[0063] A further improvement is that it further includes a positioning component 5. The positioning component 5 is used to intercept the plate 6 on the conveyor belt 11 so that the plate 6 is centered directly above the top plate 31 and the length direction and width direction of the plate 6 are respectively the same as the conveying direction and distribution direction of the conveyor belt 11. The positioning component 5 includes a vertically arranged positioning strip 51 and a telescopic unit 52 for driving the positioning strip 51 to move up and down. The projection of the positioning strip 51 on the horizontal plane is L-shaped, and two positioning components 5 are arranged symmetrically along the distribution direction of the conveyor belt 11.

[0064] Specifically, as Figures 1-3 shown, the telescopic unit 52 is a telescopic oil cylinder arranged upward, its cylinder barrel is arranged upward and fixed above the lower bottom plate 132, and the top end of the piston rod is fixedly connected to the positioning strip 51. In the initial state, the telescopic unit 52 drives the positioning strip 51 to move upward, so that the positioning strip 51 intersects with the plane where the conveying surface of the conveyor belt 11 is located, and can intercept the plate 6 in a moving state on the conveyor belt 11. The two positioning strips 51 are designed in an L shape. In the intercepted state, the positioning strip 51 is located inside the two end notches at one end of the plate 6, and the side wall of the positioning strip 51 fits against the side of the plate 6, thus ensuring that the plate 6 is centered directly above the top plate 31 and the length direction and width direction are respectively the same as the length direction and width direction of the conveyor belt 11. Then the lifting component 3 lifts the plate 6, cooperates with the top pressing component 2 to clamp the plate 6, and bends the plate 6 by using the bending component 4; at the same time, the telescopic unit 52 drives the positioning strip 51 to descend below the conveying surface of the conveyor belt 11.

[0065] After the bending process of the sheet 6 is completed, as the top plate 31 descends, the sheet 6 lands on the conveyor belt 11. Then, the driving unit 12 drives the conveyor belt 11 to rotate, causing the sheet 6 to move. After passing through the positioning strip 51, the telescopic unit 52 drives the positioning strip 51 to rise until it intersects with the plane where the conveying surface of the conveyor belt 11 is located, facilitating the positioning and interception of the next sheet 6.

[0066] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A bending device for a stainless steel elevator door panel, characterized in that: include: A transmission component (1), the transmission component (1) comprising a transmission belt (11) arranged horizontally and arranged side by side in a horizontal direction, and a driving unit (12) driving the transmission belt (11) to rotate along its own circumferential direction to drive the plate (6) to translate; A pressing assembly (2), the pressing assembly (2) comprising a pressing block (21), the bottom surface of the pressing block (21) being a pressing surface horizontally arranged above the conveyor belt (11); A lifting assembly (3), the lifting assembly (3) comprising a top plate (31) horizontally arranged directly below the top pressure block (21) and located between the conveyor belts (11), and a lifting unit (32) driving the top plate (31) to rise and fall so as to cooperate with the top pressure block (21) to clamp the plate (6); A bending assembly (4), the bending assembly (4) comprising bending units (41) corresponding one to one with four sides of a plate (6), the bending unit (41) comprising a bending piece (411) and a lifting unit (412) for driving the bending piece (411) to move upward and downward, the moving path of the bending piece (411) being separated from the conveyor belt (11).

2. The bending device for a stainless steel elevator door panel according to claim 1 is characterized in that: The top pressure block (21) comprises a middle pressure block (211) which is arranged directly above the top plate (31) and is fixed in position, and side pressure strips (212) which are arranged on four sides of the middle pressure block (211) and correspond one to one with the four sides of the plate (6); the bottom surface of the middle pressure block (211) and the bottom surface of the side pressure strips (212) are both arranged on the top pressure surface; and the top pressure assembly (2) further comprises an adjustment unit (22) for adjusting the distance between the side pressure strips (212) and the middle pressure block (211).

3. The bending device for a stainless steel elevator door panel according to claim 2 is characterized in that: The plane on which the side of the edge pressure strip (212) facing away from the middle pressure block (211) lies is a vertical plane, and the sides of adjacent edge pressure strips (212) facing away from the middle pressure block (211) are perpendicular to each other.

4. The bending device for a stainless steel elevator door panel according to claim 2, characterized in that: The adjusting unit (22) comprises an adjusting motor (221), the output shaft of the adjusting motor (221) being arranged vertically and connected to a screw rod (222) coaxially, the screw rod (222) being threadedly connected to a screw sleeve (223), the screw sleeve (223) being hinged to the side pressure strip (212) via a connecting rod (224), and the side pressure strip (212) being slidably connected to the middle pressure block (211) along a horizontal direction perpendicular to its own length direction.

5. The bending device for a stainless steel elevator door panel according to claim 2, characterized in that: The bending assembly (4) further comprises a position adjustment unit (42), wherein the position adjustment unit (42) is used to adjust the position of the bending unit (41) to correspond to the edge pressure strip (212).

6. The bending device for a stainless steel elevator door panel according to claim 5, characterized in that: The positioning unit (42) comprises a positioning motor (421), the output shaft of the positioning motor (421) is arranged vertically and is fixedly connected to a positioning disk (422) coaxially, and the positioning disk (422) is connected to the bending unit (41) via a transmission rod (423).

7. The bending device for a stainless steel elevator door panel according to claim 1, characterized in that: The bending member (411) comprises a bending bar (4111) horizontally arranged at the output end of the lifting unit (412) and a bending roller (4112) whose axial direction is consistent with the length direction of the bending bar (4111) and rotates around its own axis just above the bending bar (4111), and one side of the bending bar (4111) adjacent to the top plate (31) is a vertically arranged bending surface (4113), and the roller surface of the bending roller (4112) is tangent to the plane where the bending surface (4113) is located.

8. The bending device for a stainless steel elevator door panel according to claim 7, characterized in that: A chamfer (4114) is provided on a surface of the top of the bending strip (4111) adjacent to the top plate (31).

9. The bending device for a stainless steel elevator door panel according to claim 1, characterized in that: It also includes a positioning component (5), which is used to intercept the plate (6) on the conveyor belt (11) so that the plate (6) is centered directly above the top plate (31) and the length direction and width direction of the plate (6) are respectively consistent with the conveying direction and distribution direction of the conveyor belt (11).

10. The bending device for a stainless steel elevator door panel according to claim 9, characterized in that: The positioning assembly (5) comprises a vertically arranged positioning bar (51) and a telescopic unit (52) for driving the positioning bar (51) to move up and down, the projection of the positioning bar (51) on a horizontal plane is L-shaped, and two positioning assemblies (5) are arranged in mirror symmetry along the distribution direction of the conveyor belt (11).

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