CN120155496A - A bending device for the shell of a plate and shell air preheater - Google Patents

A bending device for the shell of a plate and shell air preheater Download PDF

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Publication number
CN120155496A
CN120155496A CN202510638242.1A CN202510638242A CN120155496A CN 120155496 A CN120155496 A CN 120155496A CN 202510638242 A CN202510638242 A CN 202510638242A CN 120155496 A CN120155496 A CN 120155496A
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CN
China
Prior art keywords
bending
plate
shell
bending plate
mounting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202510638242.1A
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Chinese (zh)
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CN120155496B (en
Inventor
许煜
虞辉
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Luoyang Sende Petrochemical Engineering Co ltd
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Luoyang Sende Petrochemical Engineering Co ltd
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Priority to CN202510638242.1A priority Critical patent/CN120155496B/en
Publication of CN120155496A publication Critical patent/CN120155496A/en
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Publication of CN120155496B publication Critical patent/CN120155496B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/04—Movable or exchangeable mountings for tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003—Positioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/14—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by turning devices, e.g. turn-tables
    • B21D43/145—Turnover devices, i.e. by turning about a substantially horizontal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

本发明属于折弯设备技术领域，主要涉及一种板壳式空气预热器的外壳用折弯装置，包括折弯机和辅助折弯机构，所述辅助折弯机构包括沿前后方向移动装配的移动件，移动件上设有绕上下方向延伸的轴线转动装配的安装座，安装座上设有沿上下方向移动装配的安装件，安装件上设有绕左右方向延伸的轴线转动装配的夹持单元，夹持单元用于夹持待加工的折弯板并使折弯板在冲压后翻面。半自动化的辅助折弯机构能够承担大部分的体力劳动，工人只需进行简单的操作和监控，这样减少了人工搬运和操作的工作量和操作时间，降低了劳动强度，改善了工作环境，提高了整体生产效率。

The present invention belongs to the technical field of bending equipment, and mainly relates to a bending device for the shell of a plate-shell air preheater, including a bending machine and an auxiliary bending mechanism, wherein the auxiliary bending mechanism includes a moving part that moves and assembles along the front-back direction, the moving part is provided with a mounting seat that is rotatably assembled around an axis extending in the up-down direction, the mounting seat is provided with a mounting part that moves and assembles along the up-down direction, the mounting part is provided with a clamping unit that is rotatably assembled around an axis extending in the left-right direction, and the clamping unit is used to clamp the bent plate to be processed and turn the bent plate over after stamping. The semi-automatic auxiliary bending mechanism can undertake most of the physical labor, and the workers only need to perform simple operations and monitoring, which reduces the workload and operation time of manual handling and operation, reduces labor intensity, improves the working environment, and improves overall production efficiency.

Description

Bending device for shell of plate-and-shell type air preheater
Technical Field
The invention belongs to the technical field of bending equipment, and mainly relates to a bending device for a shell of a plate-shell type air preheater.
Background
The plate-shell type air preheater is a device for preheating air and reducing the exhaust gas temperature by recovering heat in the exhaust gas. The plate-shell type air preheater mainly comprises heat transfer plates, a channel unit, a shell frame, guide vanes and the like. The heat transfer plate is a core component of the plate-shell type air preheater and is usually stamped from a cold-rolled sheet with a thickness of 1.2-1.5mm, and the heat transfer plate is provided with triangular bent parts.
Bending of the heat transfer plate is achieved by a bending apparatus, for example, a bending machine disclosed in chinese patent document CN103624123B is used for bending the heat transfer plate. The bending machine is provided with a base, a lower bending die is arranged on the base, an upper bending die is arranged above the lower bending die, two position adjusting mechanisms are fixedly connected to the base, the position adjusting mechanisms are provided with supports connected with the base, sliding blocks capable of moving in the vertical direction are slidingly connected to the supports, adjusting handles capable of pushing the sliding blocks to move are connected to the supports in a threaded mode, platform supports are connected to the sliding blocks, kidney-shaped holes perpendicular to the axis direction of the lower bending die are formed in the platform supports, a processing platform is detachably connected with the platform supports, and the position of the processing platform is adjustable along the axis direction of the kidney-shaped holes.
In the prior art, in the process of bending by using a bending machine, a plurality of workers are required to lift a heavy iron plate, the iron plate is placed on the bending machine to be bent, and each bending part is required to be taken down and turned over by the workers to bend the next bending part, so that time and labor are wasted, and the efficiency is also affected.
Disclosure of Invention
The invention provides a bending device for a shell of a plate-and-shell type air preheater, which aims to solve the problems of time and labor waste and low efficiency in bending an iron plate by a bending machine in the prior art.
In order to solve the problems, the invention adopts the following technical scheme:
The bending device for the shell of the plate-and-shell type air preheater comprises a bending machine and an auxiliary bending mechanism, wherein the auxiliary bending mechanism comprises a moving part which is assembled in a moving mode along the front-back direction, an installation seat which is assembled in a rotating mode around an axis extending in the up-down direction is arranged on the moving part, an installation part which is assembled in a moving mode along the up-down direction is arranged on the installation seat, a clamping unit which is assembled in a rotating mode around an axis extending in the left-right direction is arranged on the installation part, and the clamping unit is used for clamping a bending plate to be processed and enabling the bending plate to turn over after punching;
The moving piece moves to drive the bending plate clamped by the clamping unit to move towards the bending machine, and the bending machine presses the first surface of the bending plate in a folding way;
The mounting seat rotates around the axis extending in the up-down direction to drive the bending plate to horizontally rotate 180 degrees, and the clamping unit rotates around the axis extending in the left-right direction to drive the bending plate to turn over, so that the bending machine can punch the second face of the bending plate.
The semi-automatic auxiliary bending mechanism has the advantages that most of the manual labor can be borne by the semi-automatic auxiliary bending mechanism, workers only need to perform simple operation and monitoring, so that the workload and the operation time of manual carrying and operation are reduced, the labor intensity is reduced, the working environment is improved, the fatigue and the work injury risk of the workers are effectively reduced, the operation time is reduced, the production beat is improved, the efficient bending capability can reduce the processing time and the rejection rate of the bending plate, and the overall production efficiency is improved.
Further, the mounting pieces are arranged on the mounting seat at intervals, the clamping units are rotatably assembled on each mounting piece, the two clamping units are oppositely arranged, and the bending plate is arranged between the two clamping units.
The bending device has the beneficial effects that the two clamping units are clamped at the two opposite ends of the bending plate, and the positions of the bending plate can be definitely limited by clamping the two opposite ends of the bending plate, so that the bending plate is prevented from transversely moving or shifting in the bending process, the accuracy of the initial position and the angle of bending is guaranteed, the bending precision and the bending consistency are improved, and the same size and shape requirements of each bending plate can be met;
The clamping at the two ends can provide balanced supporting force for the bending plate, so that the force born by the bending plate in the bending process is more uniform, the bending plate deformation, distortion or local stress concentration caused by uneven support can be avoided, the flatness and quality of the bending plate after bending can be guaranteed, the rebound phenomenon caused by uneven stress distribution can be reduced, and the bending accuracy and stability can be improved;
When the bending plate is bent, the bending force applied by the clamping units at the two ends can be effectively dispersed to the whole bending plate, so that the problems of cracking, tearing or excessive deformation and the like of the bending plate caused by overlarge local stress near the bending point can be avoided, and particularly for thicker or higher-strength bending plates, the integrity of the bending plate can be better protected by dispersing the bending force, and the bending plate can bear larger bending force without damage;
The clamping at two ends makes the motion and the gesture of the bending plate easier to control by an operator in the bending process, and when the complete manual operation is needed, the operator can more accurately master the bending process, timely adjust the bending angle and the bending force, improve the convenience and the controllability of operation and reduce the rejection rate caused by misoperation.
Further, the auxiliary bending mechanism comprises a first driving component, and the first driving component is connected with the moving piece to drive the moving piece to move along the front-back direction;
the mounting seat is provided with two second driving components which are connected with the corresponding mounting pieces to drive the mounting pieces to move along the up-down direction;
a third driving component is arranged on each mounting piece and is connected with the clamping unit to drive the clamping unit to rotate around an axis extending in the left-right direction;
The first driving component controls the position of the moving part, the second driving component controls the position of the mounting part and the third driving component controls the angle of the clamping unit so as to control the placement position and the angle of the bending plate during stamping.
The bending plate positioning device has the advantages that the plurality of driving components can accurately drive the positions and the angles of the bending plate respectively, finer position adjustment is realized, and the plurality of driving components can cooperatively work to more accurately position the bending plate to a required position, so that the dimensional accuracy of bending is improved;
meanwhile, the plurality of driving components can be flexibly configured and controlled according to the characteristics of the specific bending plate, so that the bending requirements of various complex shapes are met;
The plurality of driving components can simultaneously perform different actions to realize parallel operation, in the bending process, one part of driving components can be responsible for adjusting the angle of the bending plate, and the other part of driving components can be responsible for adjusting the position of the bending plate, so that the processing time of each bending plate is shortened, and the overall production efficiency is improved.
Further, the mounting seat is provided with a limiting pin shaft, the limiting pin shaft penetrates through the mounting seat and is inserted into the moving part, so that the mounting seat can be fixed on the moving part through the limiting pin shaft when the bending plate is punched, and meanwhile, the limiting pin shaft can be pulled out of the moving part when the bending plate rotates, so that the mounting seat rotates relative to the moving part.
The bending plate has the advantages that the limiting pin shaft can limit relative rotation between the mounting seat and the moving part, when bending is conducted, the limiting pin shaft is used for limiting rotation between the mounting seat and the moving part, and when the other surface of the bending plate is punched, the limiting pin shaft is pulled out, so that the mounting seat and the moving part are enabled to rotate relatively, the turning of the bending plate is facilitated, and the other surface of the bending plate is punched conveniently.
Further, each clamping unit comprises a rotating piece rotationally assembled on the mounting piece, a positioning block and a supporting block capable of moving relative to the positioning block are arranged on the rotating piece, when the bending plate is bent, two opposite edge ends of the bending plate are installed between the supporting block and the positioning block on the corresponding side, and the supporting block moves to push the bending plate to be propped against the positioning block.
Further, the rotating piece is provided with an equidistant variable-pitch assembly, the equidistant variable-pitch assembly is provided with a plurality of positioning blocks, the equidistant variable-pitch assembly drives the plurality of positioning blocks to move at equal intervals, and when the bending plate is installed, the positioning blocks are positioned between two adjacent bending parts of the bending plate.
The equidistant variable-pitch assembly has the advantages that the equidistant variable-pitch assembly can be used for adjusting the distance according to bending plates with different sizes, can adapt to bending plates with various specifications, is a narrow plate or a wide plate, can realize stable clamping by only adjusting the equidistant variable-pitch assembly, does not need to replace different clamping units for bending plates with different sizes, and improves the universality of the clamping units and the utilization rate of equipment;
When bending, the equidistant variable-pitch assembly can ensure that the clamping force born by each part of the bending plate is consistent, avoids the deformation, distortion or local stress concentration of the bending plate caused by uneven stress, is beneficial to improving the bending quality, reduces the rebound phenomenon caused by the stress problem, and ensures that the bending plate after bending meets the quality requirement of high precision.
Further, each supporting block is elastically connected with a jacking block, and the jacking blocks are used for jacking one end of the bending plate.
Further, a connecting rod is slidably arranged between the two top blocks.
Further, two sliding seats with adjustable intervals are arranged on the mounting seat, the two second driving assemblies are arranged on the corresponding sliding seats, and the interval between the two clamping units is adjusted by adjusting the interval between the two sliding seats.
The clamping unit has the advantages that the interval of the clamping units can be flexibly adjusted according to the length, width or shape and other dimensional characteristics of the plate to be bent, and the interval can be reduced to provide more accurate positioning and stable clamping for small-size bending plates;
Meanwhile, the method can adapt to the sizes of various bending plates and optimize the processing process, so that the cost for purchasing additional equipment due to the fact that different bending plate requirements cannot be met is reduced, meanwhile, the processing efficiency and the product quality are improved, the rejection rate is reduced, the production cost is further reduced, and the production benefit is improved.
Further, a plurality of positioning holes are formed in the mounting seat at intervals, positioning pins are arranged on the sliding seat and penetrate through the sliding seat to be inserted into the positioning holes in the mounting seat so as to fix the positions of the sliding seat, and therefore the interval between the two clamping units is determined.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the invention are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:
FIG. 1 is a schematic view of a first state of the present invention when bent;
FIG. 2 is a schematic view of a second state of the present invention when bent;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a schematic view of the structure of the clamping unit when clamping the bending plate;
FIG. 5 is a schematic view of a first view of the clamping unit;
FIG. 6 is a schematic view of a second view of the clamping unit;
FIG. 7 is a schematic diagram of the structure of the present invention;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a cross-sectional view taken along the direction A-A in FIG. 8;
Fig. 10 is an enlarged view at B in fig. 9.
Reference numerals illustrate:
1. The bending machine comprises a bending machine body, a first motor, a3, a screw rod, a 4, a moving part, a5, a mounting seat, a 6, a sliding seat, a 7, a locating pin, a 8, a locating hole, a 9, a driving cylinder, a 10, a second motor, a 11, a mounting part, a12, a rotating part, a 13, a locating block, a 14, a bending plate, a 15, a jacking block, a 16, a limiting pin shaft, a 17, a sliding rail, a 18, a supporting block, a 19, a connecting rod, a 20, a sliding rod, a 21, a tension spring, a 22, a jacking cylinder, a 23, a bending part, a 24, an equidistant distance changing assembly, a 25 and a guide rod.
Detailed Description
The following description of the embodiments of the present invention will be made more complete and clear to those skilled in the art by reference to the figures of the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Various non-limiting embodiments of the invention are described in detail below. Any number of elements in the figures are for illustration and not limitation, and any naming is used for distinction only and not for any limiting sense. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
As shown in fig. 1-3, a bending device for a shell of a shell-and-plate air preheater comprises a bending machine 1 and an auxiliary bending mechanism. In bending, the bending plate 14 needs to be placed on an auxiliary bending mechanism to bend. The auxiliary bending mechanism replaces manual work, so that the number of times of manually carrying the bending plate 14 is reduced, the labor intensity is reduced, time and labor are saved, and the working efficiency is improved. In this embodiment, the bending machine 1 is a prior art, and the description of this embodiment is omitted.
In this embodiment, as shown in fig. 1 to 3, the auxiliary bending mechanism includes a moving member 4 that is movably assembled in the front-rear direction, the moving member 4 being capable of approaching the bending machine 1 or moving away from the bending machine 1, and the distance between the bending plate 14 and the bending machine 1 being changed by the moving member 4. The intermediate position of the moving member 4 has a rotation hole, which is rotatably fitted with a rotation shaft whose axis extends in the up-down direction, and to which a mount 5 is connected. In this embodiment, the mounting base 5 and the rotation shaft are integrally formed.
The worker manually pushes the mount 5 so that the mount 5 horizontally rotates on the moving member 4 through the rotation shaft. The mount 5 is provided with a mount 11, and the mount 11 is movable in the up-down direction. The mount 11 is provided with a holding unit, and the height of the holding unit in the up-down direction is changed by the movement of the mount 11 in the up-down direction. The clamping unit is rotatable on the mounting 11 about an axis extending in the left-right direction, the clamping unit being used to clamp the bending plate 14 to be processed and to turn the bending plate 14 over after stamping.
When bending, the clamping unit clamps the bending plate 14, the moving part 4 moves to drive the bending plate 14 clamped by the clamping unit to move towards the bending machine 1, and the bending machine 1 punches the first surface of the bending plate 14. After that, the moving member 4 moves to bring the bending plate 14 away from the bending machine 1, then the mounting seat 5 drives the bending plate 14 to horizontally rotate 180 ° through the rotating shaft, and simultaneously the clamping unit rotates around the axis extending in the left-right direction to drive the bending plate 14 to turn over, and finally the bending machine 1 presses the second face of the bending plate 14. And repeating the steps.
In this embodiment, after a part of the bending plate 14 is bent, a worker is required to manually replace the bending plate 14, that is, the bent part is replaced with the unbent part, that is, the clamping unit initially clamps the unbent part of the bending plate 14, and later the bent part is required to be replaced.
In this embodiment, semi-automatization's supplementary mechanism of bending can bear most manual labor, the workman only need carry out simple operation and control, reduced manual handling and the work load and the operating time of operation, reduced intensity of labour, improved operational environment, and this is particularly important to long-time, high strength processing task of bending, can effectively reduce workman's tired and the risk of industrial injury, reduce operating time, improved the takt, efficient ability of bending and stable performance can reduce the process time and the rejection rate of bent board 14, thereby improve whole production efficiency.
The auxiliary bending mechanism ensures that the bending plate 14 maintains the correct position and posture in the bending process, reduces bending deviation caused by human factors or precision errors of the machine tool, and accordingly improves the precision of bending angles and dimensions.
In this embodiment, as shown in fig. 1 to 3, the mounting members 11 have two, two mounting members 11 are arranged on the mounting base 5 at intervals, each mounting member 11 is rotatably equipped with the above-mentioned clamping unit, the two clamping units are arranged oppositely, and the bending plate 14 is arranged between the two clamping units.
The two clamping units are clamped at two opposite ends of the bending plate 14, and the positions of the bending plate 14 can be definitely limited by clamping the two opposite ends of the bending plate 14, so that the bending plate 14 is prevented from transversely moving or shifting in the bending process, the accuracy of the starting position and the angle of bending is guaranteed, the bending accuracy and the bending consistency are improved, and the same size and shape requirements of each bending plate 14 are guaranteed.
And the clamping at both ends can provide balanced holding power for bending board 14, makes the force that bending board 14 received more even in the bending process, can avoid bending board 14 deformation, distortion or local stress concentration because of supporting the uneven in this way, helps guaranteeing bending board 14 roughness and quality after bending, reduces the resilience phenomenon that produces because of stress distribution is uneven, improves accuracy and stability of bending.
Moreover, when the bending plate 14 is bent, the force applied by the clamping units at the two ends can effectively disperse the bending force to the whole bending plate 14, which helps to prevent the bending plate 14 from being broken, torn or excessively deformed near the bending point due to excessive local stress, and especially for thicker or stronger bending plates 14, the dispersed bending force can better protect the integrity of the bending plate 14, so that the bending plate 14 can bear larger bending force without damage.
Simultaneously, both ends centre gripping makes operating personnel control the motion and the gesture of bending board 14 more easily in the in-process of bending, and when needs manual operation entirely, operating personnel can master the process of bending more accurately, in time adjusts angle and the dynamics of bending, improves convenience and the controllability of operation, reduces the rejection rate because of misoperation leads to.
In this embodiment, as shown in fig. 1-3, the auxiliary bending mechanism includes a first driving component, and the first driving component is connected to the moving member 4 to drive the moving member to move in the front-rear direction. In this embodiment, the first driving assembly includes a first motor 2 and a screw rod 3 in transmission connection with the first motor 2, the moving member 4 is in threaded connection with the screw rod 3, the first motor 2 operates to drive the screw rod 3 to rotate, so that the moving member 4 moves along the extending direction of the screw rod 3.
Two second driving components are arranged on the mounting seat 5 and connected with the corresponding mounting piece 11 to drive the mounting piece to move along the up-down direction. In this embodiment, the second driving assembly includes a driving cylinder 9, the fixed end of the driving cylinder 9 is disposed on the mounting seat 5, and the telescopic end of the driving cylinder 9 is connected with a mounting member 11 to drive the driving cylinder to move along the up-down direction.
Each mounting member 11 is provided with a third driving assembly which is connected with the clamping unit to drive the clamping unit to rotate around an axis extending in the left-right direction. In this embodiment, the third driving assembly includes a second motor 10, the second motor 10 is disposed on the mounting member 11, and the second motor 10 is in transmission connection with the clamping unit to drive the clamping unit to rotate.
The placement position and the angle of the bending plate 14 during punching are controlled by controlling the position of the moving member 4 by the first driving assembly, controlling the position of the mounting member 11 by the second driving assembly and controlling the angle of the clamping unit by the third driving assembly.
The plurality of driving components can accurately drive the position and the angle of the bending plate 14 respectively, finer position adjustment is achieved, and the plurality of driving components can cooperatively work to more accurately position the bending plate 14 to a required position, so that the dimensional accuracy of bending is improved.
Meanwhile, the plurality of driving components can be flexibly configured and controlled according to the characteristics of the specific bending plate 14, and the bending requirements of various complex shapes are met.
In this embodiment, the plurality of driving assemblies may perform different actions simultaneously, so as to implement parallel operation, in the bending process, a part of driving assemblies may be responsible for adjusting the angle of the bending plate 14, and another part of driving assemblies may be responsible for adjusting the position of the bending plate 14, thereby shortening the processing time of each bending plate 14 and improving the overall production efficiency.
In this embodiment, as shown in fig. 1-3, a limiting pin 16 is disposed on the mounting base 5, and the limiting pin 16 is inserted into the moving member 4 through the mounting base 5, so that the mounting base 5 can be fixed on the moving member 4 through the limiting pin 16 when the bending plate 14 is stamped, and meanwhile, the limiting pin 16 can be manually pulled out from the moving member 4 when the bending plate 14 rotates, so that the mounting base 5 can rotate relative to the moving member 4.
The limiting pin 16 can limit the relative rotation between the mounting seat 5 and the moving part 4, when bending, the limiting pin 16 is used for limiting the rotation between the mounting seat 5 and the moving part 4, and when the other surface of the folding plate 14 is punched, the limiting pin 16 is pulled out, the mounting seat 5 is manually pushed, and the mounting seat 5 and the moving part 4 are relatively rotated, so that the folding plate 14 is turned over conveniently, and the other surface of the folding plate 14 is punched conveniently.
In this embodiment, as shown in fig. 1 to 3, each of the holding units includes a rotary member 12 rotatably mounted on a mounting member 11, the rotary member 12 being drivingly connected to a second motor 10, the second motor 10 being operated to thereby drive the rotary member 12 to rotate. The rotating member 12 is provided with a positioning block 13 and a supporting block 18 which can move relative to the positioning block 13, the rotating member 12 is provided with a jacking cylinder 22, and the jacking cylinder 22 is connected with the supporting block 18 to drive the supporting block 18 to move relative to the positioning block 13. A guide rod 25 is fixed to the rotating member 12, and the guide rod 25 slides through the support block 18. The guide rod 25 has two parts which are disposed on opposite sides of the jacking cylinder 22.
During bending, two opposite edge ends of the bending plate 14 are arranged between the supporting blocks 18 and the positioning blocks 13 on the corresponding sides, and the supporting blocks 18 move to push the bending plate 14 to abut against the positioning blocks 13, so that clamping and fixing of the bending plate 14 are realized.
In this embodiment, as shown in fig. 4 to 6, the rotating member 12 is provided with an equidistant distance changing assembly 24, the equidistant distance changing assembly 24 is provided with a plurality of positioning blocks 13, and the equidistant distance changing assembly 24 drives the plurality of positioning blocks 13 to move at equal intervals, that is, the intervals between any two adjacent positioning blocks 13 are the same. When the bending plate 14 is mounted, if the bending plate 14 clamped by the clamping unit has been bent, the positioning block 13 may be located between two adjacent bending portions 23 of the bending plate 14. In this embodiment, the number of positioning blocks 13 may be determined according to practical situations.
The equidistant variable pitch assembly 24 can adjust the spacing according to the bending plates 14 with different sizes, can adapt to the bending plates 14 with various specifications, is a narrow plate or a wide plate, can realize stable clamping by only adjusting the equidistant variable pitch assembly 24, does not need to replace different clamping units for the bending plates 14 with different sizes, and improves the universality of the clamping units and the utilization rate of equipment.
When bending, the equidistant variable pitch assembly 24 can ensure that the clamping forces received by all parts of the bending plate 14 are consistent, avoid the deformation and distortion of the bending plate 14 or the occurrence of local stress concentration caused by uneven stress, be beneficial to improving the bending quality, reduce the rebound phenomenon caused by the stress problem, and ensure that the bent bending plate 14 meets the quality requirement of high precision.
As shown in fig. 8 to 10, each support block 18 is connected with a tension spring 21, the tension spring 21 is connected with a top block 15 through a sliding rod 20, and when the clamping unit clamps the bending plate 14, the top block 15 presses one end of the bending plate 14, and the other end of the bending plate 14 is used for bending. As bending continues, the distance between the pre-pressing support blocks 18 of the top block 15 can be changed, and the bending plate 14 is always supported.
In this embodiment, as shown in fig. 7 and 8, two sliding seats 6 with adjustable intervals are provided on the mounting seat 5, specifically, a sliding rail 17 is fixed on the mounting seat 5, and the two sliding seats 6 are slidably assembled on the sliding rail 17. The two driving cylinders 9 are arranged on the corresponding sliding seats 6, and the interval between the two clamping units is adjusted by adjusting the interval between the two sliding seats 6 so as to be suitable for bending plates 14 with different specifications and sizes.
In this embodiment, the interval between the clamping units can be flexibly adjusted according to the length, width or shape of the plate 14 to be bent, so that for small-sized bending plates 14, the interval can be reduced to provide more accurate positioning and stable clamping, and for large-sized bending plates 14, the interval can be increased to ensure that both ends of the bending plates 14 can be effectively clamped, so that the same set of equipment can process bending plates 14 with various specifications, and the universality and the processing range of the equipment are improved.
Meanwhile, the method can adapt to the sizes of various bending plates 14 and optimize the processing process, so that the cost for purchasing additional equipment due to the fact that the requirements of different bending plates 14 cannot be met is reduced, meanwhile, the processing efficiency and the product quality are improved, the rejection rate is reduced, the production cost is further reduced, and the production benefit is improved.
In this embodiment, in order to increase the stability of the connection between the two clamping units, a connecting rod 19 is slidably fitted between the two top blocks 15.
As shown in fig. 7 and 8, the mounting base 5 is provided with a plurality of positioning holes 8 arranged at intervals, the sliding base 6 is provided with positioning pins 7, and the positioning pins 7 penetrate through the sliding base 6 and are inserted into the positioning holes 8 on the mounting base 5 to fix the position of the sliding base 6, so that the interval between the two clamping units is determined. In the present embodiment, the number of the positioning holes 8 may be determined according to the actual situation.
In this embodiment, a controller may also be arranged, which controls the operation of bending machine 1, first motor 2, second motor 10 and drive cylinder 9. The controller sets the operation values of the bending machine 1, the first motor 2, the second motor 10 and the driving cylinder 9 during each bending, so that each bending can meet the process requirements. Wherein the operation of the jacking cylinder 22 can be controlled by a manual switch.
The working process of the invention is as follows:
The distance between the two sliding seats 6 is adjusted so as to be suitable for the bending plate 14 with the corresponding specification and size. After the clamping of the bending plate 14 is completed, the two sliding seats 6 are fixed to prevent them from sliding relative to each other.
Starting the bending machine 1, bending the bending plate 14, opening the limiting pin 16 after the first surface of the bending plate 14 is punched, enabling the mounting seat 5 to rotate 180 degrees, and fixing the mounting seat 5 by using the limiting pin 16. In the process of rotating the mounting seat 5, the second motor 10 can be started simultaneously, so that the bending plate 14 is turned over, and then the bending plate 14 is close to the bending machine 1, so that the second surface of the bending plate 14 is punched. The above-described process is repeated, and bending of the bending plate 14 is completed.
After the bending plate 14 finishes bending a part of the bending plate, a worker manually changes the clamping position of the bending plate 14, so that the bending machine 1 can bend the part which is not bent.

Claims (10)

1. The bending device for the shell of the plate-and-shell type air preheater is characterized by comprising a bending machine and an auxiliary bending mechanism, wherein the auxiliary bending mechanism comprises a moving part which is assembled in a moving mode along the front-back direction, an installation seat which is assembled in a rotating mode around an axis extending in the up-down direction is arranged on the moving part, an installation part which is assembled in a moving mode along the up-down direction is arranged on the installation seat, a clamping unit which is assembled in a rotating mode around an axis extending in the left-right direction is arranged on the installation part, and the clamping unit is used for clamping a bending plate to be processed and enabling the bending plate to turn over after punching;
The moving piece moves to drive the bending plate clamped by the clamping unit to move towards the bending machine, and the bending machine presses the first surface of the bending plate in a folding way;
The mounting seat rotates around the axis extending in the up-down direction to drive the bending plate to horizontally rotate 180 degrees, and the clamping unit rotates around the axis extending in the left-right direction to drive the bending plate to turn over, so that the bending machine can punch the second face of the bending plate.
2. The bending device for the shell of the shell-and-plate air preheater according to claim 1, wherein the number of the mounting pieces is two, the two mounting pieces are arranged on the mounting seat at intervals, each mounting piece is rotatably provided with the clamping units, the two clamping units are oppositely arranged, and the bending plate is arranged between the two clamping units.
3. A shell-and-tube bending apparatus for a shell-and-tube air preheater as set forth in claim 2, wherein said auxiliary bending mechanism comprises a first drive assembly coupled to said moving member for driving it in a fore-and-aft direction;
the mounting seat is provided with two second driving components which are connected with the corresponding mounting pieces to drive the mounting pieces to move along the up-down direction;
a third driving component is arranged on each mounting piece and is connected with the clamping unit to drive the clamping unit to rotate around an axis extending in the left-right direction;
The first driving component controls the position of the moving part, the second driving component controls the position of the mounting part and the third driving component controls the angle of the clamping unit so as to control the placement position and the angle of the bending plate during stamping.
4. A bending device for a shell of a shell-and-plate air preheater according to claim 3, wherein the mounting base is provided with a limiting pin, the limiting pin is inserted into the moving member through the mounting base, so that the mounting base can be fixed on the moving member through the limiting pin when the bending plate is punched, and meanwhile, the limiting pin can be pulled out from the moving member when the bending plate is rotated, so that the mounting base rotates relative to the moving member.
5. The bending device for the shell of the shell-and-plate air preheater as set forth in any one of claims 2 to 4, wherein each of said holding units comprises a rotating member rotatably mounted on the mounting member, the rotating member is provided with a positioning block and a supporting block movable relative to the positioning block, and when bending, two opposite edge ends of the bending plate are mounted between the supporting block and the positioning block on the corresponding side, and the supporting block moves to press the bending plate against the positioning block.
6. The bending device for the shell of the shell-and-plate air preheater according to claim 5, wherein the rotating member is provided with an equidistant distance changing assembly, the equidistant distance changing assembly is provided with a plurality of positioning blocks, the equidistant distance changing assembly drives the plurality of positioning blocks to move at equal intervals, and when the bending plate is installed, the positioning blocks are positioned between two adjacent bending parts of the bending plate.
7. The bending device for the shell of the shell-and-plate air preheater as set forth in claim 6, wherein each of said support blocks is elastically connected with a top block for pressing one end of the bending plate.
8. A shell-and-plate bending apparatus for a shell-and-plate air preheater as set forth in claim 7, wherein a connecting rod is slidably mounted between two of said top blocks.
9. A shell bending apparatus for a shell-and-plate air preheater as set forth in claim 3 or 4, wherein said mounting base is provided with two sliding bases with adjustable spacing, and said two second driving assemblies are disposed on said corresponding sliding bases, and the spacing between said two clamping units is adjusted by adjusting the spacing between said two sliding bases.
10. A shell-and-plate bending apparatus for a shell-and-plate air preheater as recited in claim 9, wherein said mounting base has a plurality of spaced apart locating holes, said slide base has locating pins, and said locating pins are inserted through said slide base into said locating holes in said mounting base to fix the position of said slide base and thereby define the spacing between said two clamping units.
CN202510638242.1A 2025-05-19 2025-05-19 A bending device for the shell of a plate and shell air preheater Active CN120155496B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03264117A (en) * 1990-03-13 1991-11-25 Amada Co Ltd Bending machine
DE102005060763A1 (en) * 2005-12-16 2007-06-21 Klingel, Hans, Dr. Ing. e.h. Binding machine for forming sheet metal workpiece between complementary cross-section designs, has tool changing device for filling of tool carriers, and positioning unit by which the workpieces are bringable in position for machining
CN208495597U (en) * 2018-05-11 2019-02-15 佛山市南海启沃五金电器有限公司 A kind of Sheet metal servo device of bending machine
US20200101622A1 (en) * 2018-01-17 2020-04-02 Nanjing University Of Posts And Telecommunications Auxiliary bending robot capable of processing two workpieces simultaneously
CN111974843A (en) * 2020-09-08 2020-11-24 中集德立物流系统（苏州）有限公司 Bending system and method and supporting device thereof
CN112296141A (en) * 2019-07-31 2021-02-02 嘉意机床（上海）有限公司 Narrow steel plate processing equipment and method
CN117696765A (en) * 2023-12-26 2024-03-15 西安宝光智能电气有限公司 Auxiliary device for bending plate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03264117A (en) * 1990-03-13 1991-11-25 Amada Co Ltd Bending machine
DE102005060763A1 (en) * 2005-12-16 2007-06-21 Klingel, Hans, Dr. Ing. e.h. Binding machine for forming sheet metal workpiece between complementary cross-section designs, has tool changing device for filling of tool carriers, and positioning unit by which the workpieces are bringable in position for machining
US20200101622A1 (en) * 2018-01-17 2020-04-02 Nanjing University Of Posts And Telecommunications Auxiliary bending robot capable of processing two workpieces simultaneously
CN208495597U (en) * 2018-05-11 2019-02-15 佛山市南海启沃五金电器有限公司 A kind of Sheet metal servo device of bending machine
CN112296141A (en) * 2019-07-31 2021-02-02 嘉意机床（上海）有限公司 Narrow steel plate processing equipment and method
CN111974843A (en) * 2020-09-08 2020-11-24 中集德立物流系统（苏州）有限公司 Bending system and method and supporting device thereof
CN117696765A (en) * 2023-12-26 2024-03-15 西安宝光智能电气有限公司 Auxiliary device for bending plate

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