CN113199256A - Multi-section bending device for sheet metal machining and bending method thereof - Google Patents

Multi-section bending device for sheet metal machining and bending method thereof Download PDF

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Publication number
CN113199256A
CN113199256A CN202110423062.3A CN202110423062A CN113199256A CN 113199256 A CN113199256 A CN 113199256A CN 202110423062 A CN202110423062 A CN 202110423062A CN 113199256 A CN113199256 A CN 113199256A
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China
Prior art keywords
bending
plate
sheet metal
cutter
cylinder
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CN202110423062.3A
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CN113199256B (en
Inventor
丁晓东
高平泽
蒋丽红
李修明
高曙刚
戴慰祖
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Changzhou Laisen Machinery Manufacturing Co ltd
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Changzhou Laisen Machinery Manufacturing Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B23P23/04Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/004Bending sheet metal along straight lines, e.g. to form simple curves with program control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/006Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends

Abstract

The invention relates to the technical field of bending machines, in particular to a multi-section bending device for sheet metal machining and a bending method thereof, and solves the problem that the bending machine in the prior art cannot realize multi-section bending at one time. A bending device for sheet metal processing and a bending method thereof, which can bend in multiple sections, comprise a plurality of groups of first bending parts and a plurality of groups of second bending parts, and the first bending parts and the second bending parts have the same composition structure; the first bending part comprises a movement control mechanism, a bending mechanism and a bending driving mechanism, and the bending driving mechanism is installed with the movement control mechanism. According to the invention, the DCS system is combined with the distance measuring sensor, and the bending plate moves intelligently along with the displacement change of the bending line, so that the multi-section bending operation of the metal plate can be realized through single bending.

Description

Multi-section bending device for sheet metal machining and bending method thereof
Technical Field
The invention relates to a multi-section bending device for sheet metal machining and a bending method thereof.
Background
The metal plate needs to be bent during machining, and a bending machine is needed for bending the metal plate.
The prior publication numbers are: CN110560570B (a sheet metal bending device) adjusts the distance between two sliding seats by arranging a screw rod, thereby adjusting the bending distance, and the two punching heads on the left side and the right side can simultaneously ascend and descend by pushing the pressing plate to move up and down by the cylinder, thereby simultaneously bending the two sides of a steel plate; the referenced patents are directed to: when two sides of one steel plate need to be bent, the device needs to be used twice, repeated clamping can affect the defect of the size progress of a final product, and improvement is carried out; however, most of sheet metal processing is in a batch production mode, and the bending distance of the sheet metal needs to be manually adjusted in a reference patent, so that the time directly influences the sheet metal processing efficiency; the reference patent can realize bending operation of two sections at most, and the number of the sections of metal plate bending is limited; some bending machines can realize multi-section bending operation of the metal plate even through multiple operations of the bending machines;
if the bending machine can realize the multi-section bending sheet metal processing at a single time, the efficiency of the sheet metal processing can be greatly improved, and therefore, the bending device and the bending method for the multi-section bending sheet metal processing are provided, the multi-section bending processing of the sheet metal rule is realized, the one-time bending and cutting operation of the sheet metal is realized, and the efficiency of the sheet metal processing is greatly improved.
Disclosure of Invention
The invention aims to provide a bending device for sheet metal machining and a bending method thereof, which can bend in multiple sections, and solve the problem that the sheet metal cannot be bent in multiple sections at one time in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bending device capable of bending in multiple sections for sheet metal processing comprises two groups of supporting mechanisms, a base is arranged between the two groups of supporting mechanisms, multiple groups of first bending parts moving in a linear limiting mode and multiple groups of second bending parts moving in a linear limiting mode are respectively arranged on the two groups of supporting mechanisms, a first toothed bar and a second toothed bar which are parallel to each other are arranged on the supporting mechanisms, the multiple groups of first bending parts and the multiple groups of second bending parts respectively move in a limiting mode on the corresponding first toothed bar and the corresponding second toothed bar, and the first bending parts and the second bending parts are identical in composition structure;
the first bending part comprises a movement control mechanism, a bending mechanism and a bending driving mechanism, and the bending driving mechanism is installed with the movement control mechanism;
the bending mechanism comprises a bending plate, a first cutter and a second cutter, wherein the first cutter and the second cutter are attached to two sides of the bending plate and linearly limit-move along the bending plate;
the bending driving mechanism comprises a second air cylinder, a first air cylinder and a third air cylinder which are correspondingly used for driving the bending plate, the first cutter and the second cutter to move in a limiting way;
the mobile control mechanism comprises a fixed plate, a motor and a distance measuring sensor, wherein the motor is installed on the fixed plate, the distance measuring sensor is installed on the bending plate, the fixed plate is further provided with a gear which is driven by the motor and is meshed with the first toothed bar through a clamping tooth, and therefore the first bending portion moves on the first toothed bar in a limiting mode.
Preferably, the supporting mechanism is composed of a base and two vertical plates installed on the base, the base is installed between the bases of the two groups of supporting mechanisms, and two ends of the first toothed bar and the second toothed bar are installed between the two vertical plates of the supporting mechanism.
Preferably, the vertical plate is provided with an electric cabinet, the corresponding first air cylinder, the corresponding second air cylinder and the corresponding third air cylinder are electrically connected with the electric cabinet, the corresponding motor and the corresponding distance measuring sensor are electrically connected with the electric cabinet, and a power line of the electric cabinet is connected with a power supply.
Preferably, first cylinder, second cylinder and third cylinder all with fixed plate fixed mounting, and the activity of first cylinder, second cylinder and third cylinder stretches out the end and correspond with first cutter, the board of bending and second cutter fixed mounting, fixed mounting establishes the first U-shaped frid outside first rack bar on the fixed plate to and establish the second U-shaped frid outside the second rack bar, the gear is provided with two, with install respectively in first U-shaped frid and first rack bar cooperation transmission, install in second U-shaped frid and second rack bar cooperation transmission, the side section of first rack bar and second rack bar all laminates with the fixed plate.
Preferably, the tail ends of the first cutter and the second cutter are fixedly provided with top plates, the movable extending end of the first cylinder and the movable extending end of the third cylinder correspond to the two top plates and are fixedly connected with the two top plates respectively, the two sides of the bending plate are fixedly connected with limiting strips with cross sections of T-shaped structures, the first cutter and the second cutter are respectively provided with limiting chutes with cross sections of T-shaped structures, and the limiting chutes are connected with the limiting strips in a sliding mode.
A bending method for sheet metal processing capable of bending in multiple sections is characterized in that a laser reflector is mounted on a ranging sensor and the end surface of one side, facing back, of the ranging sensor, a computer is electrically connected with an electric control box, a PLC with automatic control program codes is mounted in the computer, an image reading unit, a calculation processing unit and an electric control unit are arranged on the PLC, and the PLC is electrically connected with a first air cylinder, a second air cylinder, a third air cylinder, a motor and the ranging sensor; PLC receives the calculation processing unit signal to feed back to the electrical control unit, and the PLC that the electrical control unit control corresponds is connected the operation with first cylinder, second cylinder, third cylinder, motor and range finding sensor electricity, and laser range finding signal carries to calculation processing unit during range finding sensor operation, and calculation processing unit received signal feeds back to the electrical control unit to form the DCS system of bender, and specifically includes following step:
firstly, reading a sheet metal unfolded graph through a PLC, wherein the sheet metal unfolded graph comprises sheet metal front bending lines and sheet metal back bending lines; reading a metal plate bending diagram through a PLC, wherein the metal plate bending diagram comprises a front bending line position after metal plate bending, a back bending line position after metal plate bending and a total length after metal plate bending; the calculation processing unit analyzes the data of the expansion diagram to obtain a set of automation control steps of the electric control system; wherein, the automation control step specifically includes:
s1, controlling the plurality of first bending parts to move to the front side bending line positions of the sheet metal unfolding diagram, and controlling the plurality of second bending parts to move to the back side bending line positions of the sheet metal unfolding diagram;
s2, controlling the bending driving mechanism to start, and controlling the plurality of first bending parts and the plurality of second bending parts to move simultaneously according to the position of a sheet metal bending diagram and the bending deformation of the sheet metal during bending so as to finish multi-section bending of the sheet metal;
s3, capturing the positions of the first bending parts and the second bending parts for performing the bending operation in the S2, controlling the first bending parts or the second bending parts for performing the bending operation or controlling the first cutters or the second cutters of the bending driving mechanisms of the first bending parts or the second bending parts which are not subjected to the bending operation according to the total length of the sheet metal, cutting the two ends of the sheet metal, and finishing the finished sheet metal product;
secondly, controlling the mechanical arm to place the metal plate between the first bending part and the second bending part, wherein the front surface of the metal plate faces the first bending part, and the back surface of the metal plate faces the second bending part;
thirdly, starting a start button of the PLC, and operating the DCS;
fourthly, finishing the metal plate, wherein the finished product is positioned on the base
Preferably, the bending plates are located on the same straight line and between two adjacent bending plates, the laser of the distance measuring sensor of one bending plate is opposite to the laser reflecting plate of the distance measuring sensor of the other bending plate, the bending plates are located on two vertical plates at two ends of the bending plates on the same straight line, the laser reflecting plate opposite to the laser of the distance measuring sensor on the adjacent bending plate is installed on one vertical plate, and the distance measuring sensor opposite to the laser reflecting plate of the distance measuring sensor on the adjacent bending plate is installed on the other vertical plate.
Preferably, in S1 of the first step, each first bending portion and each second bending portion may be independently selected, and the number of the first bending portions and the second bending portions is selected according to the number of the folding lines; and selecting a first bending part or a second bending part for cutting the metal plate according to the total length of the metal plate.
Preferably, in the automatic control step, the distance measuring sensor sets three displacement amounts, and the first displacement amount is the distance between the bending lines when the metal plate is unfolded; the second displacement is the movement speed and displacement of the movement control mechanism according to the space between the bending lines after the metal plate is bent; the third displacement is the positioning position of the first cutter or the second cutter.
The invention has at least the following beneficial effects:
1. the DCS is combined with a distance measuring sensor, so that when the metal plate is bent, the bending plate and a metal plate bending line are intelligently positioned; in the multi-section metal plate bending process, the bending plate intelligently moves along with the displacement change of the bending line; the board of bending is according to the position intelligent movement that cuts of panel beating to make the single to bend the multistage operation of bending that can realize the panel beating, the panel beating of bending with current multistage is compared through the mode of the operation of realizing bending of the control realization of bending of a lot of, and the efficiency of bending of panel beating improves greatly.
2. Through leading-in panel beating expansion plan and panel beating plane map of bending, leading-in panel beating coefficient of bending, motor operating speed, select to implement the first portion of bending and the second portion of bending of operation of bending, PLC gathers a set of automated control's DCS system automatically according to above-mentioned multiple parameter, manipulator control panel beating is to the panel beating beginning to bend, the panel beating is conveyed out by the conveyer after bending, thereby realized a multistage panel beating bender device that can automated control, it has improved very big convenience to bend for the automatic multistage of panel beating.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a bending apparatus;
FIG. 2 is a schematic view of a first bending portion;
FIG. 3 is a schematic view of the internal structure of the first bending portion;
FIG. 4 is an exploded view of the first bend;
FIG. 5 is an enlarged schematic view of the structure at A;
FIG. 6 is a schematic view of a range sensor.
In the figure: 1. a support mechanism; 101. a base; 102. a vertical plate; 2. a base; 3. an electric cabinet; 4. a first rack bar; 5. a second rack bar; 6. a first bending portion; 7. a second bending portion; 8. a movement control mechanism; 801. a fixing plate; 802. a first U-shaped channel plate; 803. a second U-shaped channel plate; 804. a motor; 805. a gear; 806. a ranging sensor; 9. a bending mechanism; 901. bending the plate; 902. a first cutter; 903. a second cutter; 904. a limiting strip; 905. a limiting chute; 906. a top plate; 10. a bending driving mechanism; 1001. a first cylinder; 1002. a second cylinder; 1003. and a third cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1-6, a bending device for sheet metal working capable of bending in multiple sections comprises two groups of supporting mechanisms 1, a base 2 is arranged between the two groups of supporting mechanisms 1, multiple groups of first bending parts 6 moving in a linear limiting manner and multiple groups of second bending parts 7 moving in a linear limiting manner are respectively arranged on the two groups of supporting mechanisms 1, a first toothed bar 4 and a second toothed bar 5 which are parallel to each other are arranged on the supporting mechanisms 1, the multiple groups of first bending parts 6 and the multiple groups of second bending parts 7 respectively move in a limiting manner on the corresponding first toothed bar 4 and the corresponding second toothed bar 5, and the first bending parts 6 and the second bending parts 7 have the same composition structure; the supporting mechanism 1 consists of a base 101 and two vertical plates 102 arranged on the base 101, the base 2 is arranged between the bases 101 of the two groups of supporting mechanisms 1, and two ends of the first toothed bar 4 and the second toothed bar 5 are arranged between the two vertical plates 102 of the supporting mechanism 1; the first bending part 6 comprises a movement control mechanism 8, a bending mechanism 9 and a bending driving mechanism 10, and the bending driving mechanism 10 is installed with the movement control mechanism 8; the bending mechanism 9 comprises a bending plate 901, a first cutter 902 and a second cutter 903, wherein the first cutter 902 and the second cutter 903 are attached to two sides of the bending plate 901 and linearly limit and move along the bending plate 901; the bending driving mechanism 10 comprises a second air cylinder 1002, a first air cylinder 1001 and a third air cylinder 1003 which are correspondingly used for driving the bending plate 901, the first cutter 902 and the second cutter 903 to move in a limiting mode; the movement control mechanism 8 comprises a fixing plate 801, a motor 804 mounted on the fixing plate 801 and a distance measuring sensor 806 mounted on the bending plate 901, wherein the fixing plate 801 is also provided with a gear 805 which is driven by the motor 804 and is meshed with the first toothed bar 4 through a latch so as to enable the first bending part 6 to move on the first toothed bar 4 in a limiting manner; the vertical plate 102 is provided with an electric cabinet 3, the corresponding first cylinder 1001, second cylinder 1002 and third cylinder 1003 are electrically connected with the electric cabinet 3, the corresponding motor 804 and the distance measuring sensor 806 are electrically connected with the electric cabinet 3, and a power line of the electric cabinet 3 is connected with a power supply;
the embodiment provides the bending plate 901 capable of moving intelligently in combination with the distance measuring sensor 806, so that when a metal plate is bent, the bending plate 901 and a metal plate bending line are intelligently positioned; in order to realize intelligent movement of the bending plate 901 along with displacement change of a bending line in the multi-section bending process of the metal plate; the intelligent movement of the first cutter 902 or the second cutter 903 attached to the bending plate 901 is realized according to the cut-off position of the metal plate; therefore, the sheet metal multi-section bending machine device capable of being automatically controlled is realized.
Example two
The embodiment is a further specific embodiment based on the first embodiment;
referring to fig. 1 to 6, a first cylinder 1001, a second cylinder 1002 and a third cylinder 1003 are all fixedly mounted on a fixing plate 801, movable extending ends of the first cylinder 1001, the second cylinder 1002 and the third cylinder 1003 are correspondingly fixedly mounted on a first cutter 902, a bending plate 901 and a second cutter 903, a first U-shaped groove plate 802 sleeved outside a first toothed bar 4 and a second U-shaped groove plate 803 sleeved outside a second toothed bar 5 are fixedly mounted on the fixing plate 801, two gears 805 are arranged to be respectively mounted in the first U-shaped groove plate 802 to be in matched transmission with the first toothed bar 4, mounted in the second U-shaped groove plate 803 to be in matched transmission with the second toothed bar 5, and side cross sections of the first toothed bar 4 and the second toothed bar 5 are both attached to the fixing plate 801;
in this embodiment, when the motor 804 receives the operation signal, the motor 804 drives the gear 805 in the first U-shaped slotted plate 802 to rotate, the gear 805 is in meshing transmission with the first rack bar 4, and the gear 805 in the second U-shaped slotted plate 803 is in driven motion with the meshing transmission with the second rack bar 5, so as to realize the horizontal limit movement of the first bending part 6 or the second bending part 7.
EXAMPLE III
The embodiment is a further specific embodiment based on the first embodiment and the second embodiment;
referring to fig. 1-6, the tail ends of the first cutter 902 and the second cutter 903 are both fixedly provided with a top plate 906, the movable extending end of the first cylinder 1001 and the movable extending end of the third cylinder 1003 are respectively and correspondingly fixedly connected with the two top plates 906, both sides of the bending plate 901 are both fixedly connected with a limiting strip 904 with a T-shaped cross section, both the first cutter 902 and the second cutter 903 are provided with a limiting chute 905 with a T-shaped cross section, and the limiting chute 905 is in sliding connection with the limiting strip 904;
in this embodiment, when the second cylinder 1002 receives a bending signal, the second cylinder 1002 controls the bending plate 901 to extend, and at this time, the positions of the first cutter 902 and the second cutter 903 on the two sides of the bending plate 901 are not moved; when the first cylinder 1001 or the third cylinder 1003 receives the cutoff signal, the first cylinder 1001 controls the first cutter 902 to extend, or the third cylinder 1003 controls the second cutter 903 to extend; and the cooperation between spacing 904 and the spacing spout 905 for first cutter 902 or second cutter 903 or the board 901 that bends stretches out the direction and carries on spacingly, with the stability and the accuracy that improve the panel beating and bend and cut the operation.
Example four
A bending method for sheet metal processing capable of bending in multiple sections is characterized in that a laser reflector is mounted on a distance measuring sensor 806 and one end face of the distance measuring sensor facing back to the laser, an electric control box 3 is electrically connected with a computer, a PLC with automatic control program codes is mounted in the computer, an image reading unit, a calculation processing unit and an electric control unit are arranged on the PLC, and the PLC is electrically connected with a first air cylinder 1001, a second air cylinder 1002, a third air cylinder 1003, a motor 804 and the distance measuring sensor 806; the PLC receives signals of the calculation processing unit to feed back to the electric control unit, the electric control unit controls the corresponding PLC to be electrically connected with the first cylinder 1001, the second cylinder 1002, the third cylinder 1003, the motor 804 and the distance measuring sensor 806 to operate, the laser distance measuring signals are transmitted to the calculation processing unit when the distance measuring sensor 806 operates, the calculation processing unit receives the signals and feeds back the signals to the electric control unit to form a DCS system of the bending machine, and the method specifically comprises the following steps:
the method comprises the following steps that firstly, a sheet metal unfolded drawing is read through a PLC (programmable logic controller), the sheet metal unfolded drawing comprises a sheet metal front bending line and a sheet metal back bending line, and the position where the front sheet metal bending line is unfolded can be marked as a1、a2Or a3And the unfolded position of the back sheet metal bending line can be marked as b1、b2Or b3The distance between the front adjacent bending lines after unfolding can be marked as a1-2Or a2-3The distance between the back adjacent bending lines after unfolding can be marked as b1-2Or b2-3
Reading a metal plate bending diagram through a PLC (programmable logic controller), wherein the metal plate bending diagram comprises a front bending line position after metal plate bending, a back bending line position after metal plate bending and a total length after metal plate bending, and the position after the front metal plate bending line bending can be marked as x1、x2Or x3And the position of the back metal plate bending line after bending can be marked as y1、y2Or y3And the distance between the bending lines adjacent to the front surface after bending can be marked as x1-2Or x2-3And the distance between the bending lines adjacent to the back surface can be marked as y1-2Or y2-3(ii) a The distance between the truncated end face of the metal plate and the adjacent bending line can be marked as d1And d2(ii) a The calculation processing unit analyzes the data of the expansion diagram to obtain a set of automation control steps of the electric control system;
wherein, the distance measuring sensor 806 sets three displacement amounts, the first displacement amount is the bending line when the metal plate is unfoldedWherein if the distance between the adjacent bending parts at the initial position is less than a1-2Or a2-3Then the motor 804 receives the backward movement signal until the pitch is equal to a1-2Or a2-3When so, terminating the movement; if the distance between the adjacent bending parts at the initial position is more than a1-2Or a2-3Then the motor 804 receives the signals of moving toward each other until the distance is equal to a1-2Or a2-3When so, terminating the movement;
the second displacement is according to the panel beating back of bending, the interval between the line of bending, and the movement speed and the displacement of movement control mechanism 8, for example: wherein the second amount of displacement is expressed as; a is1-2And x1-2The difference can be represented by D1, where the deformation amount of D1 plus the sheet metal bending coefficient is the second displacement amount, and the corresponding motor 804 terminates the operation until the second displacement amount is completed after receiving the signal; wherein the operating speed of the second displacement amount is the driving speed of the motor 804; after all the second displacements of the metal plate are finished, starting a third displacement;
the third displacement is the positioning position of the first cutter 902 or the second cutter 903; when the bending part in the bending operation is performed by the third displacement, the third displacement is zero, and the corresponding first cutter 902 or second cutter 903 performs the cutting operation directly at the bending part; when the third displacement amount is implemented for the bending portion of the non-running bending operation, the third displacement amount may be represented as d1Or d2When the initial position of the bending part implementing the third displacement is less than d1Then the motor 804 receives the backward movement signal until the separation distance is equal to d1When so, terminating the movement; when the initial position of the bending part implementing the third displacement is larger than d1Then the motor 804 receives the signals to move toward each other until the distance is equal to d1When so, terminating the movement; and the third displacement is calculated in operation, taking into account the distance between the truncation position of the cutter and the ranging sensor 806;
the automatic control steps specifically comprise:
s1, controlling the plurality of first bending parts 6 to move to the front side bending line positions of the sheet metal development diagram, and controlling the plurality of second bending parts 7 to move to the back side bending line positions of the sheet metal development diagram;
s2, controlling the bending driving mechanism 10 to start, and controlling the positions of the plurality of first bending parts 6 and the plurality of second bending parts 7 to move simultaneously according to the positions of the sheet metal bending diagram and the bending deformation of the sheet metal during bending so as to finish multi-section bending of the sheet metal;
s3, catching the positions of the first bending parts 6 and the second bending parts 7 which are subjected to the bending operation in the S2, controlling the first bending parts 6 or the second bending parts 7 which are subjected to the bending operation according to the total length of the sheet metal, or controlling the first cutting knife 902 or the second cutting knife 903 of the bending driving mechanism 10 of the first bending parts 6 or the second bending parts 7 which are not subjected to the bending operation, and cutting the two ends of the sheet metal to finish the finished sheet metal product;
secondly, controlling the manipulator to place the metal plate between the first bending part 6 and the second bending part 7, wherein the front surface of the metal plate faces the first bending part 6, and the back surface of the metal plate faces the second bending part 7;
thirdly, starting a start button of the PLC, and operating the DCS;
fourthly, finishing the processing of the metal plate, wherein the processed finished product is positioned on the base 2;
in this embodiment, the two bending plates 901 are located on the same straight line, and between two adjacent bending plates 901, the laser of the ranging sensor 806 of one bending plate 901 is opposite to the laser reflection plate of the ranging sensor 806 of the other bending plate 901, and the two vertical plates 102 at two ends of the multiple bending plates 901 are located on the same straight line, wherein one vertical plate 102 is provided with the laser reflection plate opposite to the laser of the ranging sensor 806 on the adjacent bending plate 901, and the other vertical plate 102 is provided with the ranging sensor 806 opposite to the laser reflection plate of the ranging sensor 806 on the adjacent bending plate 901; each first bending part 6 and each second bending part 7 can be independently selected, and the number of the first bending parts 6 and the number of the second bending parts 7 are selected according to the number of the folding lines; and selecting a first bending part 6 or a second bending part 7 for cutting the metal plate according to the total length of the metal plate.
EXAMPLE five
The embodiment is a specific embodiment of actually operating a multi-segment bending machine on the basis of the fourth embodiment;
given the panel beating that needs regular multistage to bend, the panel beating width of bending is in the length range of the board 901 of bending, has placed the conveyer on base 2, and the manipulator is located the bender top, begins the operation of bending:
s1, importing a sheet metal bending and unfolding front view, a sheet metal bending and unfolding back view, a sheet metal bending front view and a sheet metal bending back view on a computer;
s2, inputting a metal plate bending coefficient, and the distance from a metal plate cutting position to an adjacent bending line;
s3, click calculation, PLC calculation to obtain a DCS control step chart, inputting a plurality of first bending parts 6 for front bending operation and a plurality of second bending parts 7 for back bending operation, and PLC automatically gives the first bending parts 6 or the second bending parts 7 required by cutting according to the cutting distance in S2;
s4, moving the two ends of the metal plate to a position between the first bending part 6 and the second bending part 7 by the mechanical arm clamp at the two ends of the metal plate, clicking an opening button on a computer, operating the DCS, and loosening the mechanical arm clamp when the metal plate is supported by the first bending part 6 and the second bending part 7;
s5, the DCS system completes multi-section bending of the sheet metal, the first bending part 6 and the second bending part 7 which are operated and controlled reset, the cut sheet metal and the multi-section bent sheet metal fall on the conveyor below and are output, and the multi-section bending of the sheet metal is completed.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The bending device capable of bending in multiple sections for sheet metal processing is characterized by comprising two groups of supporting mechanisms (1), wherein a base (2) is arranged between the two groups of supporting mechanisms (1), a plurality of groups of first bending parts (6) which move linearly in a limiting manner and a plurality of groups of second bending parts (7) which move linearly in a limiting manner are respectively arranged on the two groups of supporting mechanisms (1), a first toothed bar (4) and a second toothed bar (5) which are parallel to each other are arranged on the supporting mechanisms (1), the plurality of groups of first bending parts (6) and the plurality of groups of second bending parts (7) respectively move in a limiting manner on the corresponding first toothed bar (4) and the corresponding second toothed bar (5), and the first bending parts (6) and the second bending parts (7) have the same composition structure;
the first bending part (6) comprises a movement control mechanism (8), a bending mechanism (9) and a bending driving mechanism (10), and the bending driving mechanism (10) is installed with the movement control mechanism (8);
the bending mechanism (9) comprises a bending plate (901), a first cutter (902) and a second cutter (903), wherein the first cutter (902) and the second cutter (903) are attached to two sides of the bending plate (901) and linearly limit and move along the bending plate (901);
the bending driving mechanism (10) comprises a second air cylinder (1002), a first air cylinder (1001) and a third air cylinder (1003) which are correspondingly used for driving the bending plate (901), the first cutter (902) and the second cutter (903) to move in a limiting mode;
the movement control mechanism (8) comprises a fixing plate (801), a motor (804) installed on the fixing plate (801) and a distance measuring sensor (806) installed on the bending plate (901), wherein the fixing plate (801) is further provided with a gear (805) which is driven by the motor (804) and is meshed with the first toothed bar (4) through clamping teeth so that the first bending part (6) can move on the first toothed bar (4) in a limiting mode.
2. The bending device capable of bending in multiple sections for sheet metal working according to claim 1, wherein the supporting mechanism (1) is composed of a base (101) and two vertical plates (102) installed on the base (101), the base (2) is installed between the bases (101) of the two groups of supporting mechanisms (1), and two ends of the first rack bar (4) and the second rack bar (5) are installed between the two vertical plates (102) of the supporting mechanisms (1).
3. The bending device capable of bending in multiple sections for sheet metal working according to claim 2, wherein the vertical plate (102) is provided with an electric cabinet (3), the corresponding first cylinder (1001), second cylinder (1002) and third cylinder (1003) are electrically connected with the electric cabinet (3), the corresponding motor (804) and the corresponding distance measuring sensor (806) are electrically connected with the electric cabinet (3), and a power line of the electric cabinet (3) is connected with a power supply.
4. The bending device capable of bending in multiple sections for sheet metal working according to claim 1, wherein the first cylinder (1001), the second cylinder (1002) and the third cylinder (1003) are all fixedly mounted with a fixing plate (801), the movable extending ends of the first cylinder (1001), the second cylinder (1002) and the third cylinder (1003) are correspondingly fixedly mounted with a first cutter (902), a bending plate (901) and a second cutter (903), a first U-shaped groove plate (802) sleeved outside the first rack bar (4) and a second U-shaped groove plate (803) sleeved outside the second rack bar (5) are fixedly mounted on the fixing plate (801), two gears (805) are arranged to be respectively mounted in the first U-shaped groove plate (802) to be in matched transmission with the first rack bar (4), and mounted in the second U-shaped groove plate (803) to be in matched transmission with the second rack bar (5), the side sections of the first toothed bar (4) and the second toothed bar (5) are attached to the fixing plate (801).
5. The bending device capable of bending multiple sections for sheet metal working according to claim 1, wherein the tail ends of the first cutter (902) and the second cutter (903) are fixedly provided with top plates (906), the movable extending end of the first cylinder (1001) and the movable extending end of the third cylinder (1003) are respectively and correspondingly fixedly connected with the two top plates (906), the two sides of the bending plate (901) are fixedly connected with limiting strips (904) with cross sections in T-shaped structures, the first cutter (902) and the second cutter (903) are respectively provided with limiting chutes (905) with cross sections in T-shaped structures, and the limiting chutes (905) are slidably connected with the limiting strips (904).
6. A bending method for sheet metal machining capable of bending in multiple sections is characterized in that a laser reflecting plate is mounted on a ranging sensor (806) and one side end face of the ranging sensor, facing the back, of a laser, a computer is electrically connected with an electric cabinet (3), a PLC with an automatic control program code is mounted in the computer, an image reading unit, a calculation processing unit and an electric control unit are arranged on the PLC, and the PLC is electrically connected with a first air cylinder (1001), a second air cylinder (1002), a third air cylinder (1003), a motor (804) and the ranging sensor (806); the PLC receives a signal of the calculation processing unit to feed back to the electric control unit, the electric control unit controls the corresponding PLC to be electrically connected with the first cylinder (1001), the second cylinder (1002), the third cylinder (1003), the motor (804) and the distance measuring sensor (806) to operate, the laser distance measuring signal is transmitted to the calculation processing unit when the distance measuring sensor (806) operates, the calculation processing unit receives the signal and feeds back the signal to the electric control unit to form a DCS system of the bending machine, and the method specifically comprises the following steps:
firstly, reading a sheet metal unfolded graph through a PLC, wherein the sheet metal unfolded graph comprises sheet metal front bending lines and sheet metal back bending lines; reading a metal plate bending diagram through a PLC, wherein the metal plate bending diagram comprises a front bending line position after metal plate bending, a back bending line position after metal plate bending and a total length after metal plate bending; the calculation processing unit analyzes the data of the expansion diagram to obtain a set of automation control steps of the electric control system; wherein, the automation control step specifically includes:
s1, controlling the plurality of first bending parts (6) to move to the front side bending line positions of the sheet metal development diagram, and controlling the plurality of second bending parts (7) to move to the back side bending line positions of the sheet metal development diagram;
s2, controlling a bending driving mechanism (10) to start, and controlling the positions of a plurality of first bending parts (6) and a plurality of second bending parts (7) to move according to the positions of a sheet metal bending diagram and the bending deformation of a sheet metal during bending so as to finish multi-stage bending of the sheet metal;
s3, catching the positions of the first bending parts (6) and the second bending parts (7) which are subjected to the bending operation in the S2, controlling the first bending parts (6) or the second bending parts (7) which are subjected to the bending operation or controlling the first cutter (902) or the second cutter (903) of the bending driving mechanism (10) of the first bending parts (6) or the second bending parts (7) which are not subjected to the bending operation according to the total length of the sheet metal, and cutting the two ends of the sheet metal to complete the finished sheet metal product;
secondly, controlling the manipulator to place the metal plate between the first bending part (6) and the second bending part (7), wherein the front surface of the metal plate faces the first bending part (6), and the back surface of the metal plate faces the second bending part (7);
thirdly, starting a start button of the PLC, and operating the DCS;
and fourthly, finishing the metal plate, wherein the finished product is positioned on the base (2).
7. The bending method for sheet metal working capable of bending in multiple sections according to claim 6 is characterized in that the laser of the distance measuring sensor (806) of one bending plate (901) is opposite to the laser reflecting plate of the distance measuring sensor (806) of the other bending plate (901) and is positioned on two vertical plates (102) at two ends of a plurality of bending plates (901) on the same straight line, the laser reflecting plate opposite to the laser of the distance measuring sensor (806) on the adjacent bending plate (901) is installed on one vertical plate (102), and the distance measuring sensor (806) opposite to the laser reflecting plate of the distance measuring sensor (806) on the adjacent bending plate (901) is installed on the other vertical plate (102).
8. The bending method for multi-stage bendable sheet metal working according to claim 6, wherein in step S1 of the first step, each first bending portion (6) and each second bending portion (7) are individually selectable, and the number of the first bending portion (6) and the second bending portion (7) is selected according to the number of the bending lines; and selecting a first bending part (6) or a second bending part (7) for cutting the metal plate according to the total length of the metal plate.
The bending method for sheet metal working capable of multi-stage bending according to claim 6, wherein in the automatic control step, the distance measuring sensor (806) sets three displacement amounts, and the first displacement amount is the distance between the bending lines when the sheet metal is unfolded; the second displacement is the movement speed and displacement of the movement control mechanism (8) according to the space between the bending lines after the metal plate is bent; the third displacement is the positioning position of the first cutter (902) or the second cutter (903).
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