CN116871366B - Material feeding unit for bender and application method - Google Patents
Material feeding unit for bender and application method Download PDFInfo
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- CN116871366B CN116871366B CN202311145647.9A CN202311145647A CN116871366B CN 116871366 B CN116871366 B CN 116871366B CN 202311145647 A CN202311145647 A CN 202311145647A CN 116871366 B CN116871366 B CN 116871366B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 title description 3
- 238000005452 bending Methods 0.000 claims abstract description 80
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- 230000001360 synchronised effect Effects 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
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- 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
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0281—Workpiece supporting devices
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The application discloses a feeding device for a bending machine and a using method thereof, and belongs to the technical field of bending equipment: the bending machine comprises upright posts arranged on two sides of the bending machine, and a cross beam which is positioned at the top end of the upright posts and can lift relative to the upright posts, wherein the cross beam is provided with at least two transverse moving devices capable of moving along the cross beam; each transverse moving device is provided with a Y-direction sliding seat, the Y-direction sliding seats drive the lifting belt to move relative to the fixed pulleys through the fixed pulleys so as to adjust the height of the end parts of the lifting belt, the two ends of the lifting belt are connected with a workpiece to be bent through workpiece connecting devices, and the heights of all the workpiece connecting devices positioned on the same side of the bending machine are equal; the transverse side of the workpiece to be bent, which is positioned on the feeding and discharging side of the bending machine, is also connected with at least two feeding connecting devices, and the positions of the connecting devices in the X direction and the Z direction of the workpiece to be bent are the same, so that the workpiece to be bent can be synchronously driven. The application can ensure the smooth and efficient operation of bending under the premise of ensuring parallel feeding.
Description
Technical Field
The application relates to the technical field of auxiliary tools of bending machines, in particular to a feeding device for a bending machine and a using method of the feeding device.
Background
Boom arms of cranes (including bridge cranes and wheel cranes) and the like are usually manufactured by means of splice welding of steel plates. The blanking procedure adopts a cutting machine to cut a rectangular steel plate, then the rectangular steel plate is folded into two steel members with the same opening size through a bending machine, and finally the two steel members are welded together through a welding machine.
In fig. 1, a simple rectangular steel plate is bent into a steel beam to be welded with a U-shaped section through a bending process, and a dash-dot line in the upper graph in fig. 1 shows the bending position of the rectangular steel plate, and the automatic feeding and conveying device of the bending machine in the prior art needs to ensure that the whole plane of the steel plate is positioned above a conveying mechanism or the bending position is positioned at the edge of the steel plate to automatically feed due to upward supporting force and transverse friction force which can be lifted to the steel plate.
Bending operation of bending machine operators on the steel plates is achieved manually under the cooperation of crane lifting, and feeding quantity is achieved completely through manual measurement. Although this approach is not feasible and cost effective in practical applications, it is relatively primitive.
To the above-mentioned problem, publication No. CN 209918728U describes "a feeding device of a bending machine for production of a communication tower", which pushes a steel plate forward through a plurality of pushing frames arranged side by side, and also cannot satisfy accurate feeding after one side of the steel plate is tilted. Another prior patent, publication No. CN 108097753B, describes "an automatic feeding device for bending machine". The positioning requirement of the steel plate after being bent can be met, and the steel plate cannot be rotated by taking the steel plate bending line as the axis, so that workers are required to receive auxiliary operation in practical application.
Considering that the shape of the steel plate before bending is rectangular, and all folds are parallel to one side of the steel plate, the feeding device for the bending machine, which can meet the automatic feeding of the rectangular steel plate, can be designed on the basis of the prior art.
Disclosure of Invention
In order to solve the defects in the prior art, the application provides a feeding device for a bending machine and a using method.
In order to achieve the above object, the present application adopts the following technical scheme:
feeding device for bending machine: the bending machine comprises upright posts arranged on two sides of the bending machine, and a cross beam which is positioned at the top end of the upright posts and can lift relative to the upright posts, wherein the cross beam is provided with at least two transverse moving devices capable of moving along the cross beam;
each transverse moving device is provided with a Y-direction sliding seat, the Y-direction sliding seats drive the lifting belt to move relative to the fixed pulleys through the fixed pulleys so as to adjust the height of the end parts of the lifting belt, the two ends of the lifting belt are connected with a workpiece to be bent through workpiece connecting devices, and the heights of all the workpiece connecting devices positioned on the same side of the bending machine are equal;
the transverse side of the workpiece to be bent, which is positioned on the feeding and discharging side of the bending machine, is also connected with at least two feeding connecting devices, and the positions of the connecting devices in the X direction and the Z direction of the workpiece to be bent are the same, so that the workpiece to be bent can be synchronously driven.
Preferably, the feeding device for bending machine comprises: the upper end of the cross beam is connected with a Y-direction sliding seat through a Y-direction sliding rail, the lower end of the cross beam is provided with a Y-direction rack, the Y-direction sliding seat is driven by a Y-direction gear meshed with the Y-direction rack to transversely slide along the cross beam, both sides of the Y-direction sliding seat are provided with guide wheels, and at least two guide wheels on the same side of the Y-direction sliding seat are distributed along the Y direction.
Preferably, the feeding device for bending machine comprises: the lifting belt is one or more of a steel wire rope, a chain and a synchronous belt which are connected in series, and the fixed pulley is matched with the lifting belt.
Preferably, the feeding device for bending machine comprises: the workpiece connecting device comprises an X-side clamping piece, an end clamping piece and a hinging piece, wherein the X-side clamping piece clamps the outer edge of a workpiece to be bent through a side opening arranged in the Y direction, an end limiting stop used for connecting the X-side edge of the workpiece to be bent is arranged at the end of the end clamping piece, the end clamping piece can stretch and retract and lock along the X direction relative to the X-side clamping piece, and the two ends of the hinging piece are respectively hinged with the lifting belt and the X-side clamping piece.
Preferably, the feeding device for bending machine comprises: the feeding connecting device comprises a vertical support, synchronous pulleys are respectively arranged at two ends of the vertical support, the two synchronous pulleys are connected through a synchronous belt, the vertical support is provided with a vertical sliding block, and the vertical sliding block is horizontally hinged with a Y-side clamping piece which faces an opening of the bending machine and is used for clamping a workpiece to be bent.
Preferably, the feeding device for bending machine comprises: the end part of one of the synchronous pulleys is provided with a driven tooth which is driven by a motor.
Preferably, the feeding device for bending machine comprises: the bottom of vertical support is equipped with X to the sliding block, and X to the sliding block can follow Y to the carriage slip, and Y is equipped with X to the sliding block to the both ends of carriage, is equipped with X to the feed gear in the X to the sliding block, and two X are all driven by Y to the transfer line to the feed gear, and the bottom of X to the sliding block cup joints in Y to the transfer line.
Preferably, the feeding device for bending machine comprises: the X-direction feeding gear is meshed with the X-direction rack, the X-direction rack is provided with a vertical sliding seat, the side part of the upright post is connected with the vertical sliding seat through a vertical sliding rail, and the height of the vertical sliding seat relative to the vertical sliding rail is adjustable and locked.
The using method of the feeding device for the bending machine comprises the following steps: comprises the following steps:
step 1: horizontally placing a workpiece to be bent on the upper part of the base in a manner that one side of the workpiece is parallel to the base;
step 2: the height and the Y-direction positions of the transverse moving devices are adjusted to enable the Y-direction positions of the two transverse moving devices to be matched with the Y-direction two-end positions of the workpiece to be bent respectively, the four workpiece connecting devices are connected to four corners of the workpiece to be bent respectively, and the height and the Y-direction positions of the Y-side clamping pieces are adjusted to enable the Y-side clamping pieces to be clamped on the Y sides of the workpiece to be bent;
step 3: the workpiece to be bent is horizontally placed at the upper end of the base through synchronous pushing of all Y-side clamping pieces, the bottom of the workpiece to be bent is simultaneously contacted with two sides of the base, and the first bending line is positioned under the upper pressure head;
step 4: the upper pressure head is pressed down, and when the upper pressure head contacts a workpiece to be bent and reaches a preset pressure, the Y-side clamping piece is in a free state in the X direction and the Z direction;
step 5: the Y-side clamping piece moves along with the workpiece to be bent in the pressing process of the upper pressing head, and after the upper pressing head is pressed down to a preset depth, the upper pressing head is lifted up after the Y-side clamping piece is locked;
step 6: under the condition that the workpiece to be bent is lifted to be separated from the base and is not contacted with the upper pressure head by adjusting the height of the cross beam, the workpiece to be bent is moved to the next bending position by the motion of the Y-side clamping piece and the height adjustment of the cross beam and the rotation of the fixed pulley, and the bottom of the workpiece to be bent is simultaneously contacted with the two sides of the base;
step 7: repeating the step 4 and the step 5;
step 8: after the workpiece to be bent is completely bent, the Y-side clamping piece is loosened, the X-side clamping piece is loosened, and finally the bent workpiece is detached.
The application has the beneficial effects that:
compared with the prior art, the semi-automatic feeding device can realize semi-automatic feeding of bending of the rectangular steel plate. In the bending process of the rectangular steel plate, each folding line of the steel plate can be guaranteed to be parallel to one side of the steel plate, and the processing quality of products is guaranteed. Compared with the existing bending feeding device, the steel plate bending feeding device can control the steel plate to rotate by taking the bending line as the center on the premise of ensuring parallel feeding, ensures that the workpiece to be bent is horizontally placed at the upper end of the base before bending, and the bottom of the workpiece to be bent is simultaneously contacted with the two sides of the base, and ensures that the bending operation is smoothly and efficiently carried out.
Drawings
FIG. 1 is a comparative view of a rectangular steel plate before and after bending in the prior art;
FIG. 2 is an isometric view of the overall structure of the present application;
FIG. 3 is a block diagram of a lateral mobile device of the present application;
FIG. 4 is a block diagram of a work attachment apparatus of the present application;
FIG. 5 is a block diagram of a work attachment and feed attachment of the present application;
FIG. 6 is a block diagram of the column and feed drive of the present application;
FIG. 7 is an end view of a workpiece to be bent prior to bending in accordance with the present application;
FIG. 8 is an end view of the bent workpiece of the present application after bending;
meaning of reference numerals: 1-an upper pressure head; 2-stand columns; 3-a cross beam; 4-a lateral movement device; 5-a workpiece connection device; 6-feeding connection means; 7-a feed drive; 11-a base; 21-a vertical slide rail; 22-vertical slide carriage; 221-vertical adjusting screw; 23-X direction racks; 31-lifting columns; 32-Y direction slide rail; 41-Y direction sliding seat; 42-guiding wheels; 43-Y direction rack; 44-Y direction gear; 441-Y direction walking motor; 45-fixed pulleys; 46-lifting belt; 51-hinge; 52-stud bolts; 53-X side clamping piece; 54-end clip; 541-end limit stops; 55-jackscrew I; 61-vertical supports; 62-a synchronous pulley; 621-passive teeth; 63-a synchronous belt; 64-vertical sliding blocks; 65-Y side clamping pieces; 651-second jack; 71-X direction feeding motor; 72-Y direction sliding frame; 73-X direction sliding blocks; 74-X direction feed gear; 741-Y direction transmission rod; 75-Y direction slider.
Description of the embodiments
The application is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.
As in fig. 2 to 6: in the present application, the X-direction and the Y-direction respectively represent a direction parallel to the upper presser 1 (also called a bending blade) and a direction perpendicular to the bending blade in the horizontal direction, and thus the Y-direction may be also called a lateral direction. The Z direction expresses vertical. The above directional representation is merely for the sake of clarity in describing the application and does not serve to limit the scope of the application in any way.
The embodiment discloses a material feeding unit for bender: the bending machine comprises upright posts 2 arranged on two sides of the bending machine and a cross beam 3 which is positioned at the top end of the upright posts 2 and can be lifted relative to the upright posts 2. The upright post 2 is usually made of square tubes, and the bottom can be fixed on the ground through foundation bolts or expansion bolts. The two ends of the cross beam 3 are connected with the upright post 2 in a lifting manner through a lifting upright post 31 inserted into the upper end of the upright post 2. The telescopic manner between the lifting upright 31 and the upright 2 can be driven by any one of the prior art, such as an oil cylinder or an electric cylinder, and can also be driven by a screw rod. In this embodiment, since it is necessary to ensure that the two lifting columns 31 are synchronized and have a certain precision of lifting movement, a screw driving method is suggested.
The cross beam 3 is provided with at least two lateral displacement means 4 which are displaceable along the cross beam 3. Each transverse moving device 4 is provided with a Y-direction sliding seat 41, the Y-direction sliding seat 41 drives the lifting belt 46 to move relative to the fixed pulley 45 through the fixed pulley 45 so as to adjust the height of the end part of the lifting belt 46, namely, the fixed pulley 45 corresponds to a bridge pulley positioned at the upper end, and the height of the other end part of the lifting belt 46 can be synchronously adjusted by driving the height position of one end part of the lifting belt 46 due to the fixed length of the lifting belt 46.
The lifting belt 46 in this embodiment is one or more of a wire rope, a chain, and a timing belt in series. Both ends of the lifting belt 46 are connected with the workpiece to be bent through the workpiece connecting device 5. The front and rear sides described in this embodiment refer to the sides of the bending blade relative to the bending machine, i.e., the X-direction, the feed side of the bending machine being referred to as the front side and the other side as the rear side.
In connection with fig. 4 and 5: the workpiece connecting device 5 comprises an X-side clamping piece 53, an end clamping piece 54 and a hinge piece 51, wherein the X-side clamping piece 53 is clamped with the outer edge of a workpiece to be bent, an end limit stop 541 used for connecting the outer edge of the workpiece X to be bent is arranged at the end of the end clamping piece 54, the end clamping piece 54 can stretch and retract relative to the X-side clamping piece 53 along the X direction and can be locked, and the locking can be achieved by adopting a common jackscrew, namely a jackscrew one 55 is arranged on the X-side clamping piece 53 and used for locking the end clamping piece 54. The hinge member 51 is hinged at both ends to the lifting belt 46 and the X-side engaging member 53, respectively. In practical use, the hinge members 51 may be designed to be two, and the two hinge members 51 are connected by the stud bolts 52 for adjusting the length of the whole workpiece connecting device 5 to compensate for the error in length between the two lifting belts 46.
In connection with fig. 2 and 3: the upper end of the cross beam 3 is connected with a Y-direction sliding seat 41 through a Y-direction sliding rail 32, a Y-direction rack 43 is arranged at the lower end of the cross beam 3, the Y-direction sliding seat 41 is driven to transversely slide along the cross beam 3 through a Y-direction gear 44 meshed with the Y-direction rack 43, and the Y-direction gear 44 is driven by a Y-direction travelling motor 441.
The two sides of the Y-direction sliding seat 41 are respectively provided with a guide wheel 42, at least two guide wheels 42 are arranged on the same side of the Y-direction sliding seat 41, and the two guide wheels 42 are distributed along the Y direction, so that the Y-direction sliding seat 41 is prevented from shaking relative to the cross beam 3 as much as possible.
From the above description it can be seen that: four hanging points can be provided for the workpiece to be bent through the two transverse moving devices 4, and the four hanging points are respectively positioned at four corners of the steel plate. However, since the lifting belt 46 is a flexible belt, it can only provide a pulling force, so that the lifted steel plate swings horizontally or rotates at a certain angle in practical application, and the heights of the two lifting joints on the same side are also changed, so that the four lifting joints are not substantially different from the manual feeding in the prior art, and therefore, a device capable of limiting the steel plate is also required. Therefore, the embodiment further comprises at least two feeding connection devices 6 (the feeding connection devices 6 are positioned at the front side of the feeding and discharging side of the bending machine), and all the feeding connection devices 6 and the connection of the workpiece to be bent are positioned at the same positions in the X direction and the Z direction and can synchronously drive the workpiece to be bent.
Specific: the feeding connection device 6 comprises a vertical support 61, synchronous pulleys 62 are respectively arranged at two ends of the vertical support 61, the two synchronous pulleys 62 are connected through a synchronous belt 63, the vertical support 61 is provided with a vertical sliding block 64 capable of sliding along the vertical support 61, the vertical sliding block 64 is horizontally hinged with a Y-side clamping piece 65 which faces towards an opening of a bending machine and is used for clamping a workpiece to be bent, and a driven tooth 621 is arranged at the end part of the lower side of one synchronous pulley 62 and driven by a motor. All motors in the feed connection 6 for driving the passive teeth 621 are rotated synchronously to ensure that all Y-side clamps 65 are of equal height. Of course, the synchronous pulleys 62 at the lower ends of all the synchronous belts 63 can realize synchronous rotation by the same transmission shaft driving mode.
On the other hand, it is also necessary to ensure that the Y-side clamping member 65 moves synchronously in the X-direction and the Y-direction, in order to achieve this, the bottom of the vertical support 61 is provided with an X-direction sliding block 73, the X-direction sliding block 73 can slide along the Y-direction sliding frame 72, both ends of the Y-direction sliding frame 72 are provided with X-direction sliding blocks 73, the X-direction sliding blocks 73 are internally provided with X-direction feeding gears 74, both X-direction feeding gears 74 are driven by the Y-direction driving rod 741, and the bottom of the X-direction sliding block 73 is sleeved on the Y-direction driving rod 741. Both ends of the Y-direction transmission rod 741 are controlled by the X-direction feeding motor 71, and meanwhile, the Y-direction transmission rod 741 and the X-direction feeding gear 74 are preferably connected by adopting a spline.
The X-direction feeding gear 74 is meshed with the X-direction rack 23, the X-direction rack 23 is provided with a vertical sliding seat 22, the side part of the upright post 2 is connected with the vertical sliding seat 22 through a vertical sliding rail 21, and the height between the vertical sliding seat 22 and the vertical sliding rail 21 is adjustable and locked. Since the Y-side catch 65 can slide vertically within a certain range, the height adjustment of the vertical slider 22 relative to the vertical rail 21 does not need to be performed frequently. The vertical slide 22 can be height-adjusted by a vertical adjusting screw 221.
The embodiment also discloses a using method of the feeding device for the bending machine, which comprises the following steps: the method specifically comprises the following steps:
step 1: the two feeding connection devices 6 are moved to two ends, the distance between the two feeding connection devices is ensured to allow the steel plate to normally pass through, the workpiece to be bent is horizontally placed into the upper part of the base 11 in a mode that one side of the workpiece is parallel to the base 11, the process can be realized through a horizontal conveying device in the prior art, the horizontal conveying device can not only convey the steel plate forwards, but also accurately adjust the rotation angle of the steel plate, and one side of the steel plate enters in an angle parallel to a bending cutter.
Step 2: the height and the Y-direction positions of the transverse moving devices 4 are adjusted to enable the Y-direction positions of the two transverse moving devices 4 to be respectively matched with the Y-direction two-end positions of the workpiece to be bent, the four workpiece connecting devices 5 are respectively connected to four corners of the workpiece to be bent, and the Y-side clamping pieces 65 are adjusted to enable the Y-side clamping pieces to be clamped on the Y side of the workpiece to be bent.
Step 3: the workpiece to be bent is horizontally placed at the upper end of the base 11 and the first bending line is positioned right below the upper pressure head 1 by synchronously pushing all Y-side clamping pieces 65;
step 4: when the upper pressing head 1 is pressed down and the upper pressing head 1 contacts with a workpiece to be bent and reaches a preset pressure (the pressure does not plastically deform the steel plate but can ensure that the steel plate does not slide horizontally), the control system releases the X-direction feeding motor 71 and the motor connected with the passive teeth 621 to enable the Y-side clamping piece 65 to be in a free state in the X direction and the Z direction, wherein the free state means that the Y-side clamping piece can overcome the rotation of the corresponding motor and move along the X direction and the Z direction under the driving of the outer edge of the steel plate due to the deformation of the bent steel plate in the bending process of the steel plate.
Step 5: the Y-side clamping piece 65 moves along with the workpiece to be bent in the pressing process of the upper pressing head 1, and after the upper pressing head 1 is pressed to a preset depth, the upper pressing head 1 is lifted up after the driving motor (the X-direction feeding motor 71 and the motor connected with the driven teeth 621) of the Y-side clamping piece 65 is locked. Because in the bending process, the two sides of the steel plate are tilted upwards, the lifting belt 46 is loosened, the bottom of the steel plate is supported by the base 11, the base 11 bears the main acting force on the steel plate, and the Y-side clamping piece 65 only provides an auxiliary positioning function, so that the Y-side clamping piece 65 is not stressed greatly and cannot be damaged due to overlarge stress.
Step 6: and under the condition that the workpiece to be bent is lifted to be separated from the base 11 and is not contacted with the upper pressing head 1 (the specific height separated from the upper pressing head 1 can be set according to practical conditions), in the lifting process of the cross beam 3, the Y-side clamping piece 65 correspondingly follows in the X direction and the Z direction, after the lifting of the cross beam 3 is completed, the part of the workpiece to be bent is adjusted to be horizontal by utilizing the movement of the Y-side clamping piece 65 in the Z direction (in the adjusting process, the lifting belt 46 correspondingly moves relative to the fixed pulley 45 according to the change of the gravity center of the workpiece), the Z-direction position of the workpiece is locked, then the Y-side clamping piece 65 is controlled to move in the X direction, the next bending position is moved to be right below the upper pressing head 1 and the X-direction position of the workpiece is locked, then the height of the cross beam 3 is adjusted, the part to be bent is horizontally contacted with the base 11, and the bottoms of the workpiece are ensured to be simultaneously contacted with the two sides of the base 11. It should be noted that, during the process that the Y-side clamping member 65 pushes the workpiece to move in the X-direction and the Z-direction, and the beam 3 lifts and lowers the workpiece, the gravity of the workpiece is mainly borne by tightening the lifting belt 46, and only the auxiliary force of the movement is provided when the Y-side clamping member 65 pushes the workpiece to move, so that the Y-side clamping member 65 cannot bear excessive force to cause damage.
Step 7: and (5) repeating the step 4, the step 5 and the step 6.
Step 8: when the workpiece to be bent is completely bent, the upper pressing head 1 moves upwards, the Y-side clamping piece 65 is loosened, the X-side clamping piece 53 is loosened, and the bent workpiece is detached. The Y-side clamping member 65 can be automatically controlled by a control system in the prior art after the specification and the characteristics of the product are determined by moving and adjusting the height of the cross beam 3. Fig. 7 and 8 are end views of the steel sheet before and after bending.
Compared with the prior art, the semi-automatic feeding device can realize semi-automatic feeding of bending of the rectangular steel plate. In the bending process of the rectangular steel plate, each folding line of the steel plate can be guaranteed to be parallel to one side of the steel plate, and the processing quality of products is guaranteed. Compared with the existing bending feeding device, the steel plate bending feeding device can control the steel plate to rotate by taking the bending line as the center on the premise of ensuring parallel feeding, ensures that the workpiece to be bent is horizontally placed at the upper end of the base 11 before bending, and the bottoms of the workpiece to be bent are simultaneously contacted with the two sides of the base 11, so that the smooth and efficient bending operation is ensured.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present application, and such modifications and variations should also be regarded as being within the scope of the application.
Claims (2)
1. Feeding device for bending machine, its characterized in that: the bending machine comprises upright posts (2) arranged on two sides of the bending machine and a cross beam (3) which is positioned at the top end of the upright posts (2) and can be lifted relative to the upright posts (2), wherein the cross beam (3) is provided with at least two transverse moving devices (4) which can move along the cross beam (3);
each transverse moving device (4) is provided with a Y-direction sliding seat (41), the Y-direction sliding seats (41) drive lifting belts (46) to move relative to the fixed pulleys (45) through the fixed pulleys (45) so as to adjust the heights of the end parts of the lifting belts (46), two ends of each lifting belt (46) are connected with a workpiece to be bent through workpiece connecting devices (5), and the heights of all the workpiece connecting devices (5) positioned on the same side of the bending machine are equal;
the transverse side of the workpiece to be bent, which is positioned at the feeding and discharging side of the bending machine, is also connected with at least two feeding connecting devices (6), and the positions of the connecting positions of all the feeding connecting devices (6) and the workpiece to be bent in the X direction and the Z direction are the same, so that the workpiece to be bent can be synchronously driven;
the upper end of the cross beam (3) is connected with a Y-direction sliding seat (41) through a Y-direction sliding rail (32), the lower end of the cross beam (3) is provided with a Y-direction rack (43), the Y-direction sliding seat (41) is driven to transversely slide along the cross beam (3) through a Y-direction gear (44) meshed with the Y-direction rack (43), guide wheels (42) are arranged on two sides of the Y-direction sliding seat (41), and at least two guide wheels (42) on the same side of the Y-direction sliding seat (41) are distributed along the Y direction;
the lifting belt (46) is one or more of a steel wire rope, a chain and a synchronous belt which are connected in series, and the fixed pulley (45) is matched with the lifting belt (46);
the workpiece connecting device (5) comprises an X-side clamping piece (53), an end clamping piece (54) and a hinging piece (51), wherein the X-side clamping piece (53) is clamped with the outer edge of a workpiece to be bent through a side opening arranged in the Y direction, an end limit stop (541) for connecting the X-side edge of the workpiece to be bent is arranged at the end of the end clamping piece (54), the end clamping piece (54) can stretch and retract and lock along the X direction relative to the X-side clamping piece (53), and the two ends of the hinging piece (51) are respectively hinged with a lifting belt (46) and the X-side clamping piece (53);
the feeding connecting device (6) comprises a vertical support (61), synchronous pulleys (62) are respectively arranged at two ends of the vertical support (61), the two synchronous pulleys (62) are connected through a synchronous belt (63), the vertical support (61) is provided with a vertical sliding block (64), and the vertical sliding block (64) is horizontally hinged with a Y-side clamping piece (65) which faces an opening of the bending machine and is used for clamping a workpiece to be bent;
the end part of one synchronous pulley (62) is provided with a driven tooth (621), and the driven tooth (621) is driven by a motor;
an X-direction sliding block (73) is arranged at the bottom of the vertical support (61), the X-direction sliding block (73) can slide along a Y-direction sliding frame (72), X-direction sliding blocks (73) are arranged at two ends of the Y-direction sliding frame (72), an X-direction feeding gear (74) is arranged in the X-direction sliding block (73), the two X-direction feeding gears (74) are driven by a Y-direction driving rod (741), and the bottom of the X-direction sliding block (73) is sleeved on the Y-direction driving rod (741);
the X-direction feeding gear (74) is meshed with the X-direction rack (23), the X-direction rack (23) is provided with a vertical sliding seat (22), the side part of the upright post (2) is connected with the vertical sliding seat (22) through a vertical sliding rail (21), and the height of the vertical sliding seat (22) relative to the vertical sliding rail (21) is adjustable and locked.
2. The method for using the feeding device for the bending machine according to claim 1 is characterized in that: comprises the following steps:
step 1: horizontally placing a workpiece to be bent on the upper part of the base (11) in a manner that one side of the workpiece is parallel to the base (11);
step 2: the height and the Y-direction positions of the transverse moving devices (4) are adjusted, so that the Y-direction positions of the two transverse moving devices (4) are respectively matched with the Y-direction two-end positions of the workpiece to be bent, the four workpiece connecting devices (5) are respectively connected to four corners of the workpiece to be bent, and the height and the Y-direction positions of the Y-side clamping pieces (65) are adjusted to be clamped on the Y sides of the workpiece to be bent;
step 3: the workpiece to be bent is horizontally placed at the upper end of the base (11) through synchronous pushing of all Y-side clamping pieces (65), the bottoms of the workpiece to be bent simultaneously contact the two sides of the base (11), and a first bending line is located under the upper pressure head (1);
step 4: the upper pressing head (1) is pressed down, and when the upper pressing head (1) contacts a workpiece to be bent and reaches a preset pressure, the Y-side clamping piece (65) is in a free state in the X direction and the Z direction;
step 5: the Y-side clamping piece (65) moves along with the workpiece to be bent in the pressing process of the upper pressing head (1), and after the upper pressing head (1) is pressed down to a preset depth, the upper pressing head (1) is lifted up after the Y-side clamping piece (65) is locked;
step 6: under the condition that the workpiece to be bent is lifted to be separated from the base (11) and is not contacted with the upper pressure head (1) by adjusting the height of the cross beam (3), the workpiece to be bent is moved to the next bending position by matching the height adjustment of the cross beam (3) and the rotation of the fixed pulley (45) through the movement of the Y-side clamping piece (65), and the bottoms of the workpiece to be bent are simultaneously contacted with the two sides of the base (11);
step 7: repeating the step 4 and the step 5;
step 8: after all the workpieces to be bent are bent, the Y-side clamping piece (65) is loosened, the X-side clamping piece (53) is loosened, and finally the bent workpieces are detached.
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| CN116871366A (en) | 2023-10-13 |
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