CN110624989A - Method for manufacturing sound barrier board - Google Patents

Abstract

The invention relates to the technical field of forming and processing, and discloses a manufacturing method of a sound barrier plate. The manufacturing method comprises the following steps: feeding along the length direction of the metal strip; sequentially carrying out first punching operation and second punching operation on the metal strip at the punching position, wherein the first punching operation punches the first blank plate from the metal strip, and the second punching operation punches the second blank plate from the metal strip; conveying the first blank plate and the second blank plate to a downstream production line in sequence and in pairs, processing the first blank plate into a panel, and processing the second blank plate into a back plate; and placing the paired panel and the paired back plate on a feeding car in sequence, and unloading the panel and the back plate at the appointed positions through the feeding car. The metal strip is punched into the first blank plate and the second blank plate which are paired, each pair of the first blank plate and the second blank plate is processed into the panel and the back plate, and the paired panel and back plate are carried, so that the manufacturing process of the panel and the back plate is efficient and convenient, and the panel and the back plate are convenient to assemble.

Description

Method for manufacturing sound barrier board

Technical Field

The invention relates to the technical field of forming and processing, and discloses a manufacturing method of a sound barrier plate.

Background

The sound barrier panel is mainly used for highway, railway and overhead composite road, and can absorb sound and insulate sound to reduce noise of other noise sources. Referring to fig. 1 and 2, the sound barrier panel generally includes a front panel 200 ' and a back panel 300 ' capable of being fastened to each other, wherein sound-absorbing holes 2000 ' are densely formed in the front panel.

Currently, when manufacturing a sound barrier panel, a front panel and a back panel of the sound barrier panel are generally processed separately. The mode of processing the panel and the back plate independently has low efficiency, and the number of finished products of the panel and the back plate can not be ensured to be consistent, so that the waste of redundant panels or back plates is caused.

Disclosure of Invention

Based on the above, an object of the present invention is to provide a method for manufacturing a sound barrier panel, which can efficiently process a front panel and a back panel of the sound barrier panel and ensure that the numbers of the front panel and the back panel are corresponding to each other.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of manufacturing an acoustic barrier panel, comprising:

feeding along the length direction of the metal strip;

sequentially carrying out first punching operation and second punching operation on the metal strip at a punching position, wherein the first punching operation punches a first blank plate from the metal strip, and the second punching operation punches a second blank plate from the metal strip;

conveying the first blank plate and the second blank plate to a downstream production line in sequence and in pairs, processing the first blank plate into a panel, and processing the second blank plate into a back plate;

and sequentially placing the paired panel and the paired back plate on a feeding car, and unloading the panel and the back plate at a specified position through the feeding car.

Preferably, after uncoiling the coiled metal strip, leveling the stretched metal strip, introducing the metal strip into a storage buffer pool, and then leading the metal strip out of the storage buffer pool and driving the metal strip to stretch into the punching position.

Preferably, the metal strip introduced into the stock buffer pool is sunken under the action of gravity, if the depth of the sunken part is greater than a first target depth, the uncoiling speed of the coiled metal strip is correspondingly reduced, and if the depth of the sunken part is less than a second target depth, the uncoiling speed of the coiled metal strip is correspondingly increased.

Preferably, a first time interval is separated between the first punching operation and the second punching operation, a second time interval is separated between the second punching operation and the subsequent first punching operation, and the time length of the first time interval and the second time interval is adjustable.

Preferably, the movement of the metal strip is halted while the first and second blanking operations are performed.

Preferably, transverse bending positions are arranged along the downstream production line, and the transverse bending positions comprise a first transverse bending position and a second transverse bending position;

and performing a first transverse bending operation on one side of the first blank plate and the second blank plate facing the downstream of the production line at the first transverse bending position, and performing a second transverse bending operation on one side of the first blank plate and the second blank plate facing the upstream of the production line at the second transverse bending position.

Preferably, the first transverse bending position and the second transverse bending position are arranged in sequence along the downstream production line;

if the lengths of the first blank plate and the second blank plate are increased, the interval time between the first transverse bending operation and the second transverse bending operation is correspondingly increased, and if the lengths of the first blank plate and the second blank plate are decreased, the interval time between the first transverse bending operation and the second transverse bending operation is correspondingly decreased.

Preferably, a longitudinal bending position is further provided along the downstream production line, the longitudinal bending position and the transverse bending position are sequentially provided along the downstream production line, and at the longitudinal bending position, longitudinal bending operations are performed on two sides of the first blank plate and the second blank plate extending along the downstream production line.

Preferably, the paired panels and the paired back plates are sequentially placed on the feeding car from bottom to top, the heights of the panels and the back plates on the feeding car are monitored, if the heights are equal to or greater than a target height, the feeding car leaves a loading position for unloading, and the other feeding car reaches the loading position for loading.

Preferably, the weight of the panel and the back plate on the feeding car is monitored, if the weight is equal to or greater than a target weight, the feeding car leaves a loading position for unloading, and the other feeding car arrives at the loading position for loading.

The invention has the beneficial effects that:

according to the invention, the metal strip is driven along the length direction of the metal strip to feed, then the metal strip is transversely punched, so that the metal strip is punched into the paired first blank plate and second blank plate, each pair of the first blank plate and the second blank plate is processed into a pair of the panel and the back plate through a downstream production line, and the paired panel and back plate are conveyed to the appointed position through the feeding trolley, so that the manufacturing process of the panel and the back plate is efficient and convenient, the same quantity of finished products of the panel and the back plate can be ensured, the waste caused by different quantity of finished products of the panel and the back plate is avoided, and the subsequent assembly of each pair of the panel and the back plate is convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic view of a panel of the background art;

FIG. 2 is a schematic diagram of a back plate in the background art;

FIG. 3 is a flow chart of a method of manufacturing an acoustic barrier panel according to an embodiment;

FIG. 4 is a schematic view of a first blank panel in accordance with an embodiment;

FIG. 5 is a schematic view of a panel in accordance with an embodiment;

FIG. 6 is a schematic view of a second blank panel in accordance with an embodiment;

FIG. 7 is a schematic view of a back plate in an embodiment;

FIG. 8 is a schematic diagram of the construction of an uncoiler and leveler in an embodiment;

FIG. 9 is a schematic diagram of the structure of a storage buffer pool and a feeder in an embodiment;

FIG. 10 is a schematic diagram of the structure of a punching and shearing machine, a turnover machine and an oiling machine in an embodiment;

fig. 11 is a schematic diagram of the structure of a longitudinal bending machine in an embodiment;

FIG. 12 is a schematic diagram of the structure of a transverse bending machine in an exemplary embodiment;

fig. 13 is a schematic structural view of a stacker according to an embodiment.

In the figure:

100-a metal strip; 101-concave;

200-a panel; 200' -a panel; 2011-a first longitudinal bend edge; 2012-a first transverse bending edge; 2000-sound absorption hole; 2000' -sound absorbing hole;

201-a first blank plate; 2011' -a first longitudinal bend; 2012' -a first transverse bend;

300-a back plate; 300' -a backsheet; 3011-a second longitudinal bent edge; 3012-second transverse bending edge;

301-a second blank; 3011' -a second longitudinal bend; 3012' -a second transverse bend;

1-uncoiler;

10-a main shaft; 11-a nip wheel; 110-a swaging arm; 12-a tension wheel; 120-a tensioning arm; 13-a material storage buffer table; 130-a first roller;

2-a leveling machine;

20-a first conveyor roller; 21-a first pinch roll; 22-leveling rolls; 221-upper leveling rollers; 222-a lower leveling roller; 23-a storage buffer pool; 230-a second roller; 231-a fiber optic sensor;

3-a feeder;

30-a second conveyor roller; 31-a second pinch roll;

4-punching and shearing machine;

40-a third conveyor roller; 41-lower assembling die; 42-upper assembling die;

5-a turnover machine;

50-overturning a groove; 51-a first flipping panel; 52-a second flipping panel;

6-oiling machine;

61-oiling roller;

7-longitudinal bending machine;

70-panel interface; 71-a forming roller; 711-upper roller; 712-a bottom roller;

8-transverse bending machine;

801-a first conveyor belt; 802-a second conveyor belt; 803-a third conveyor belt;

81-a first transverse bending machine; 811-a first hydraulic cylinder; 812-a first bending plate;

82-a second transverse bending machine; 821-a second hydraulic cylinder; 822-a second bending plate;

9-stacking machine;

90-a buttress conveyor belt; 91-a manipulator; 92-feeding car.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 3, 4, 5, 6 and 7, the present embodiment provides a method for manufacturing an acoustic barrier panel, which is capable of processing a metal strip 100 into a front sheet 200 and a back sheet 300 (see fig. 8) of the acoustic barrier panel. The manufacturing method comprises the steps of feeding the metal strip material 100 along the length direction, transversely punching the metal strip material 100 to punch the metal strip material into a pair of first blank plate 201 and second blank plate 301, respectively processing each pair of first blank plate 201 and second blank plate 301 into a pair of face plate 200 and back plate 300, and finally carrying the pair of face plate 200 and back plate 300 to a specified position, so that the manufacturing process of the face plate 200 and the back plate 300 is efficient and convenient, and the subsequent assembly of each pair of face plate 200 and back plate 300 is facilitated.

The method for manufacturing the sound barrier panel provided by the embodiment specifically comprises the following three steps.

In the first step, the metal strip 100 is discharged along the length direction thereof, and a punching position is provided along the length direction of the metal strip 100, and the metal strip 100 is subjected to a transverse punching operation at the punching position. The transverse punching operation is sequentially provided with a plurality of groups, in each group of transverse punching operation, a first punching operation and a second punching operation are sequentially performed, the first punching operation punches the first blank plate 201 from the metal strip material 100, and the second punching operation punches the second blank plate 301 from the metal strip material 100.

Referring to fig. 8, 9 and 10, in the first step, a coiled metal strip 100 installed on an uncoiler 1 is uncoiled and stretched, the stretched metal strip 100 is leveled by a leveler 2 and then introduced into a storage buffer tank 23, and then the metal strip 100 is led out of the storage buffer tank 23 from a feeder 3 and then driven to stretch into a punching position; the punching and shearing machine 4 is arranged at the punching position, a plurality of groups of transverse punching operations are carried out on the metal strip material 100, a plurality of pairs of first blank plates 201 and second blank plates 301 are correspondingly and sequentially conveyed to the turnover machine 5 to be turned over, and then the first blank plates 201 and the second blank plates 301 are oiled through the oiling machine 6.

In the present embodiment, the unwinder 1 has an unwinder support on which a spindle 10, a nip wheel 11, and a tension wheel 12 are provided. The spindle 10 is rotatably connected to the uncoiler support and can rotate to drive the coiled metal strip 100 to rotate and uncoil; the pressing wheel 11 is connected to the uncoiler bracket through a pressing arm 110 and is rotatably connected to the end part of the pressing arm 110; the tensioning wheel 12 is connected to the unwinder carriage by a tensioning arm 120 and is rotatably connected to the end of the tensioning arm 120. A storage buffer table 13 is arranged between the uncoiler 1 and the leveler 2, a plurality of first rollers 130 are arranged on the storage buffer table 13, and the rolling direction of the first rollers 130 is the same as the moving direction of the metal strip 100.

The coiled metal strip 100 is fixedly sleeved on the main shaft 10 and is pressed tightly by the material pressing wheel 11; the metal strip 100 stretched by the uncoiler 1 enters between the uncoiler 1 and the leveler 2, and is pressed by the tension wheel 12 onto the stock buffer 13 to be tensioned, and is engaged with the first roller 130.

In the present embodiment, the leveler 2 has first conveying rollers 20, first pinch rollers 21, and leveling rollers 22. The first conveying rollers 20 are provided in plurality and are arranged at the inlet of the leveler 2; the first pinch rolls 21 are provided with two groups, the axes of the two first pinch rolls 21 in each group are arranged in parallel, and one first pinch roll 21 is arranged right above the other first pinch roll 21; the leveling rollers 22 are arranged between the two groups of first pinch rollers 21 and comprise two upper leveling rollers 221 and three lower leveling rollers 222; two upper leveling rollers 221 are disposed on the upper side of the three lower leveling rollers 222, and each upper leveling roller 221 is engaged with two lower leveling rollers 222.

The metal strip 100 is led out between the tension wheel 12 and the storage buffer 13, and is led into a gap between a group of first pinch rolls 21 close to the inlet of the leveler 2 after being matched with the first conveying rolls 20. The circumferential surfaces of the first pinch rolls 21 are tightly attached to the metal strip 100, and the metal strip 100 is driven to sequentially enter gaps between the two upper leveling rolls 221 and the lower leveling roll 222 for leveling through synchronous rotation; the leveled metal strip 100 is then introduced into the stock buffer tank 23 by means of another set of first pinch rolls 21. Wherein the first pinch roll 21 draws the metal strip 100 at a speed, i.e. the unwinding speed of the coiled metal strip 100.

In the present embodiment, the feeder 3 has a second conveying roller 30 and a second pinch roller 31; the bottom of the stock buffer tank 23 is provided with a fiber sensor 231 and a second roller 230. The second conveying rollers 30 are provided in plurality and are arranged at the inlet of the feeder 3; the number of the second pinch rolls 31 is two, the axes of the two second pinch rolls 31 are arranged in parallel, and one second pinch roll 31 is arranged right above the other second pinch roll 31. The rolling direction of the plurality of second rollers 230 is the same as the moving direction of the metal strip 100.

The metal strip 100 introduced into the storage buffer pool 23 forms a recess 101 under the action of gravity, and then is introduced into a gap between two second pinch rollers 31 after being matched with a second conveying roller 30; the circumferential surfaces of the two second pinch rolls 31 are tightly attached to the metal strip 100, and the metal strip 100 is driven by synchronous rotation. The optical fiber sensor 231 in the storage buffer pool 23 is used for monitoring the position change of the bottom of the recess 101, that is, by monitoring the depth of the recess 101, whether the uncoiling speed of the uncoiler 1 is matched with the feeding speed of the feeding machine 3 is judged, and the uncoiling speed of the coiled metal strip 100 is correspondingly adjusted. And a second roller 230 in the stock buffer pool 23, which is used for preventing the bottom of the pit 101 from being too low to directly rub the bottom surface of the stock buffer pool 23.

Specifically, a first target depth and a second target depth are set in the stock buffer pool 23, and the first target depth is larger than the second target depth. The two optical fiber sensors 231 are arranged, and the two optical fiber sensors 231 monitor the position of the bottom of the recess 101 together, so that the depth of the recess 101 is controlled, the position of the metal strip material 100 in the storage buffer pool 23 is guaranteed to be within a certain range, and the metal strip material 100 is enabled to move stably.

If the depth of the recess 101 is greater than the first target depth, an optical fiber sensor 231 is triggered, and the control system correspondingly reduces the rotation speed of the spindle 10 of the uncoiler 1 and the drawing speed of the first pinch roll 21 of the leveler 2, i.e. the uncoiling speed of the coiled metal strip 100, according to the signal output by the optical fiber sensor 231.

If the depth of the recess 101 is less than the second target depth, another optical fiber sensor 231 is triggered, and the control system increases the rotation speed of the spindle 10 of the uncoiler 1 and the drawing speed of the first pinch roll 21 of the leveler 2, i.e. the uncoiling speed of the coiled metal strip 100, according to the signal output by the optical fiber sensor 231.

In the present embodiment, the punching and shearing machine 4 has a lower split die 41 and an upper split die 42. The lower split die 41 is used to carry the metal strip 100, and the upper split die 42 is used to punch the lower split die 41 to perform the first punching operation, the second punching operation, and the punching operation. When the first punching operation, the second punching operation and the punching operation are performed, the second pinch roller 31 of the feeding machine 3 is suspended to drive the metal strip 100 to move under the control of the control system so as not to affect the punching of the upper combined die 42.

The feeder 3 drives the metal strip 100 to extend into the punching position through the second pinch roll 31, that is, between the lower combined die 41 and the upper combined die 42, so as to sequentially punch the metal strip 100 into the first blank plate 201 and the second blank plate 301, and then the third conveying roll 40 at the outlet of the punching and shearing machine 4 sequentially sends out the paired first blank plate 201 and second blank plate 301. By adjusting the number of punches that the upper split die 42 protrudes from, a corresponding number of sound absorbing holes 2000 can be processed in the first blank plate 201.

Specifically, a first blanking operation and a second blanking operation are separated by a first time period, and a second blanking operation and a first blanking operation in a subsequent set of transverse blanking operations are separated by a second time period. By controlling the lengths of the first and second periods, the first and second blank boards 201 and 301 having different lengths can be processed.

In the present embodiment, the inverter 5 has an inverter bracket, a first inverter plate 51 and a second inverter plate 52. The first turnover plate 51 and the second turnover plate 52 are arranged in parallel, and the middle part of the first turnover plate 51 and the middle part of the second turnover plate 52 are rotatably connected with the turnover machine bracket. The flipping slot 50 at the lower side of the flipping machine stand can prevent the first flipping plate 51 and the second flipping plate 52 from interfering with the ground due to rotation.

The first blank sheet 201 and the second blank sheet 301 sequentially fed out by the third feed roller 40 sequentially enter between the first inversion sheet 51 and the second inversion sheet 52 which are horizontal. By driving the first and second reversing plates 51 and 52 to rotate for half a revolution, the first or second blank plate 201 or 301 interposed between the first and second reversing plates 51 and 52 is reversed, thereby changing the direction of burrs generated by the punching on the first or second blank plate 201 or 301. When the first and second flipping plates 51 and 52 are flipped over, the feeder 3 and the punching and shearing machine 4 are suspended.

In the first time period, the first blank plate 201 cut by the first punching operation continues to move downstream for a certain distance under the pushing of the upstream metal strip 100, and the upper combined die 42 extends out of the punch and performs a punching operation on the first blank plate 201 cut by the first punching operation through the punch to process the sound absorbing hole 2000 in the first blank plate 201; then, the first blank sheet 201 having the sound absorbing hole 2000 is sent to the inverting machine 5 by the third conveying roller 40 to be inverted.

During the second period, the second blank 301 cut by the second punching operation continues to move downstream by a distance under the push of the upstream metal strip 100 until it is sent by the third conveyor roller 40 to the reversing machine 5 for reversing.

Specifically, the driving speed of the second pinch roll 31 to the metal strip 100 is not changed, and the time for suspending the driving of the second pinch roll 31 is not changed due to the first punching operation, the second punching operation and the overturning of the first overturning plate 51 and the second overturning plate 52, under the control of the control system:

if the first time period is prolonged, the length of the second blank plate 301 is correspondingly increased, and if the first time period is reduced, the length of the second blank plate 301 is correspondingly reduced;

extending the second period of time increases the length of the first blank plate 201 accordingly, and decreasing the second period of time decreases the length of the first blank plate 201 accordingly.

In the present embodiment, the oiling machine 6 has two oiling rollers 61. The number of the oiling rollers 61 is two, the axes of the two oiling rollers 61 are arranged in parallel, and one oiling roller 61 is arranged right above the other oiling roller 61. The periphery of the oiling roller 61 is provided with a felt coated with lubricating oil.

The first blank plate 201 and the second blank plate 301 are led out of the turnover machine 5 through conveying rollers between the first turnover plate 51 and the second turnover plate 52 in sequence and are led into a gap between the two oiling rollers 61; the peripheral surfaces of the two oiling rollers 61 are closely attached to the first blank plate 201 or the second blank plate 301, and the lubricating oil is driven and applied to the two surfaces of the first blank plate 201 or the second blank plate 301 through synchronous rotation. The first blank sheet 201 and the second blank sheet 301 are sequentially led out of the oiling machine 6 by the driving of the two oiling rollers 61.

In the second step, the first blank plate 201 and the second blank plate 301 drawn out from the oiling machine 6 are sequentially and pairwise conveyed to a downstream production line, the first blank plate 201 is processed to be the face plate 200, and the second blank plate 301 is processed to be the back plate 300. Sequentially setting a longitudinal bending position and a transverse bending position along a downstream production line; the longitudinal bending positions comprise a first longitudinal bending position and a second longitudinal bending position, and the first longitudinal bending position and the second longitudinal bending position are symmetrically arranged relative to a downstream production line; the transverse bending position comprises a first transverse bending position and a second transverse bending position which are sequentially arranged along a downstream production line.

Sound absorbing holes 2000 are densely distributed in the first blank plate 201 punched and cut from the metal strip 100; two sides extending along the length direction are respectively a first longitudinal bending part 2011 ', and the other two sides are respectively a first transverse bending part 2012'; notches are respectively cut at four corners of the first blank plate 201, so that the first longitudinal bending portion 2011 'and the first transverse bending portion 2012' can be conveniently bent at the longitudinal bending position and the transverse bending position, and interference is avoided (see fig. 4).

The two sides of the second blank plate 301 cut from the metal strip 100 along the length direction are respectively a second longitudinal bending part 3011 ', and the other two sides are respectively a second transverse bending part 3012'; notches are respectively cut at four corners of the second blank plate 301, so that the second longitudinal bending portion 3011 'and the second transverse bending portion 3012' can be conveniently bent at the longitudinal bending position and the transverse bending position in the following process, and interference is avoided (see fig. 6).

Referring to fig. 11, in a second step, longitudinal bending machines 7 are respectively disposed at a first longitudinal bending position and a second longitudinal bending position.

In the longitudinal bending machine 7 at the first longitudinal bending position, a longitudinal bending operation is performed on one side of the first blank plate 201 and the second blank plate 301 extending along the downstream production line, so that the first longitudinal bending portion 2011 'on the side is bent into a first longitudinal bending edge 2011, and the second longitudinal bending portion 3011' on the side is bent into a second longitudinal bending edge 3011.

In the longitudinal bending machine 7 at the second longitudinal bending position, the other side of the first blank plate 201 and the second blank plate 301 extending along the downstream production line is subjected to longitudinal bending operation, so that the first longitudinal bending portion 2011 'on the side is bent into a first longitudinal bending edge 2011, and the second longitudinal bending portion 3011' on the side is bent into a second longitudinal bending edge 3011.

In this embodiment, longitudinal bending machine 7 has a plurality of sets of forming rollers 71, sets of forming rollers 71 being distributed along the downstream production line. Each set of forming rollers 71 comprises an upper roller 711 and a lower roller 712 which are matched with each other, and the upper roller 711 is arranged above the lower roller 712. The first blank plate 201 and the second blank plate 301 are sequentially and pairwise bent from the plate material interface 70 of the longitudinal bending machine 7 into a longitudinal bending position. The distance between the two longitudinal bending machines 7 can be adjusted according to the widths of the first blank plate 201 and the second blank plate 301, so as to ensure that the forming rollers 71 on two sides of the downstream production line can simultaneously bend the first longitudinal bending part 2011 'or the second longitudinal bending part 3011'.

The first blank plate 201 is introduced into the plate material interface 70, and the first longitudinal bent portion 2011' of the first blank plate 201 facing to one side of the first longitudinal bending position or the second longitudinal bending position is sequentially roll-formed by the multiple sets of forming rollers 71 through a gap between the upper roller 711 and the lower roller 712. The upper roller 711 and the lower roller 712 are both tightly attached to the first longitudinal bending portion 2011 ', and the first longitudinal bending portion 2011' is rolled and driven to enter the next set of forming rollers 71 through synchronous rotation until the bending of the first longitudinal bending edge 2011 is finished by the output of the longitudinal bending machine 7.

The second blank plate 301 is introduced into the plate material interface 70, and the second longitudinal bending portion 3011 'on one side of the second blank plate 301 facing the first longitudinal bending position or the second longitudinal bending position is sequentially roll-formed on the second longitudinal bending portion 3011' by the multiple sets of forming rollers 71 through the gap between the upper roller 711 and the lower roller 712. The upper roller 711 and the lower roller 712 are both tightly attached to the second longitudinal bending portion 3011 ', and the second longitudinal bending portion 3011 ' is rolled and the second longitudinal bending portion 3011 ' is driven to enter the next set of forming rollers 71 through synchronous rotation until the second longitudinal bending edge 3011 is bent after being output by the longitudinal bending machine 7.

Referring to fig. 12, in a second step, a transverse bending machine 8 is provided at the transverse bending position. Wherein lateral bending machine 8 comprises a first lateral bending machine 81 and a second lateral bending machine 82; a first lateral bending machine 81 is provided at the first lateral bending position and a second lateral bending machine 82 is provided at the second lateral bending position.

The first blank plate 201 and the second blank plate 301 are sequentially and pairwise output by the longitudinal bending machine 7, enter the first transverse bending machine 81 and the second transverse bending machine 82 in sequence for bending under the transmission of the first conveying belt 801 and the second conveying belt 802 of the transverse bending machine 8, and are finally sent out by the third conveying belt 803 of the transverse bending machine 8. The two sides of the transverse bending machine 8 extending along the downstream production line are provided with guide grooves extending along the downstream production line, and when the first conveying belt 801, the second conveying belt 802 and the third conveying belt 803 are conveyed, the first longitudinal bending edge 2011 and the second longitudinal bending edge 3011 can pass through the guide grooves and move along the guide grooves.

In the first transverse bending machine 81 at the first transverse bending position, a first transverse bending operation is performed on one side of the first blank plate 201 and the second blank plate 301 facing the downstream of the production line, so that the first transverse bending part 2012 'on the side is bent into a first transverse bending edge 2012, and the second transverse bending part 3012' on the side is bent into a second transverse bending edge 3012.

In the second transverse bending machine 82 at the second transverse bending position, a second transverse bending operation is performed on one side of the first blank plate 201 and the second blank plate 301 facing the upstream of the production line, so that the first transverse bending part 2012 'on the one side is bent into a first transverse bending edge 2012, and the second transverse bending part 3012' on the one side is bent into a second transverse bending edge 3012.

In this embodiment, first transverse bender 81 has a first hydraulic cylinder 811 and a first bending plate 812. The first bending plate 812 is rotatably connected with the bending machine support, and the first hydraulic cylinder 811 drives the first bending plate 812 to rotate towards the upstream direction of the production line through a hydraulic rod, so as to bend the corresponding first transverse bending part 2012 'or second transverse bending part 3012'.

The first blank board 201 is driven by the first conveyor 801 to move downstream of the production line until the first transverse bending part 2012 'facing downstream of the production line is conveyed to the horizontal first bending board 812, and at the same time, the first bending board 812 is driven to rotate in the upstream direction of the production line, so as to bend the first transverse bending part 2012' of the side into the first transverse bending edge 2012.

The second blank sheet 301 is driven by the first conveyor 801 to move downstream until the second transverse bend 3012 'toward the downstream of the production line is conveyed to the horizontal first bend 812, and at the same time, the first bend 812 is driven to rotate in the upstream direction of the production line to bend the second transverse bend 3012' toward the second transverse bend 3012.

In this embodiment, the second lateral bending machine 82 has a second hydraulic cylinder 821 and a second bending plate 822. The second bending plate 822 is rotatably connected to the bending machine support, and the second hydraulic cylinder 821 drives the second bending plate 822 to rotate towards the downstream direction of the production line through a hydraulic rod, so as to bend the corresponding first transverse bending part 2012 'or second transverse bending part 3012'.

After the first blank 201 is bent toward the first transverse bend 2012' downstream of the production line, the first bent sheet 812 returns to horizontal. The first blank 201 is fed by the first conveyor belt 801 onto the second conveyor belt 802 of the transverse bending machine 8 and is driven by the second conveyor belt 802 to be conveyed via the second horizontal bending plate 822 onto the third conveyor belt 803. Until the first transverse bending part 2012 'facing the upstream of the production line is conveyed to the second bending plate 822, and simultaneously the second bending plate 822 is driven to rotate towards the downstream direction of the production line so as to bend the first transverse bending part 2012' of the side into the first transverse bending edge 2012, and then the second bending plate 822 returns to the horizontal state.

After the second blank 301 is bent toward the second transverse bend 3012' downstream of the production line, the first bent sheet 812 returns to horizontal. The second blank 301 is fed by the first conveyor belt 801 onto the second conveyor belt 802 of the transverse bending machine 8 and is driven by the second conveyor belt 802 to be conveyed by the second horizontal bending plate 822 onto the third conveyor belt 803. Until the second transverse bending part 3012 'facing the upstream of the production line is conveyed to the second bending plate 822, and at the same time, the second bending plate 822 is driven to rotate towards the downstream direction of the production line so as to bend the second transverse bending part 3012' at the side into a second transverse bending edge 3012, and then the second bending plate 822 is restored to be horizontal.

In this embodiment, the panel 200 is processed by bending the first longitudinal bending portion 2011 'into a first longitudinal bending edge 2011 and then bending the first transverse bending portion 2012' into a first transverse bending edge 2012 (see fig. 5); the second longitudinal bending portion 3011 'is bent to be a second longitudinal bending edge 3011, and then the second transverse bending portion 3012' is bent to be a second transverse bending edge 3012, so as to complete the processing of the back panel 300 (see fig. 7).

Specifically, the distance between the first bending plate 812 and the second bending plate 822 is not changed, the driving speed of the first conveyor belt 801, the second conveyor belt 802, and the third conveyor belt 803 is not changed, and under the control of the control system:

if the lengths of the first blank plate 201 and the second blank plate 301 are increased, the interval time between the first transverse bending operation performed by the first bending plate 812 and the second transverse bending operation performed by the second bending plate 822 is correspondingly increased for the same first blank plate 201 or second blank plate 301;

if the lengths of the first blank plate 201 and the second blank plate 301 are reduced, the interval time between the first lateral bending operation by the first bending plate 812 and the second lateral bending operation by the second bending plate 822 is reduced for the same first blank plate 201 or second blank plate 301.

By controlling the interval time of the first and second lateral bending operations, the lateral bending can be performed for the first and second blank plates 201 and 301 having different lengths. The starting time points of the first hydraulic cylinder 811 and the second hydraulic cylinder 821 can be set by the control system; a light sensor may also be provided on the side of the second bending plate 822 that faces upstream in the production line, and this light sensor is triggered when the first blank 201 or the second blank 301 is about to leave the second bending plate 822, and the control system activates the second hydraulic cylinder 821 according to the signal output by the light sensor.

In the third step, referring to fig. 13, after the bending formation of the first blank plate 201 and the second blank plate 301 is completed, the paired face plate 200 and back plate 300 are sequentially conveyed to the stacking conveyor 90 of the stacking machine 9 by the third conveyor 803; and then the panel 200 and the back plate 300 on the stacking conveyor belt 90 are taken out in sequence through the manipulator 91, and the paired panel 200 and back plate 300 are placed on the feeding car 92 from bottom to top in sequence.

In the present embodiment, the method of preventing the carriage 92 from being overloaded includes the following two methods.

First, the height of the top panel 200 and back panel 300 on the carriage 92 is monitored by providing position sensors on the stacker 9.

If the height of the panel 200 and the back plate 300 on the feeding cart 92 is equal to or greater than the target height, the position sensor is triggered, the control system drives the feeding cart 92 to leave the loading position according to the signal output by the position sensor, so that the paired panel 200 and back plate 300 are unloaded at the designated position, and the other feeding cart 92 reaches the loading position for loading. This method focuses on preventing the face plate 200 and back plate 300 on the cart 92 from collapsing due to excessive build-up.

Specifically, if the target height is set to be an integral multiple of the height of the pair of the front panel 200 and the back panel 300, when the height of the front panel 200 and the back panel 300 on the feeding carriage 92 is equal to the target height, the position sensor is triggered to drive the feeding carriage 92 to move away, so that the front panel 200 and the back panel 300 are placed on the feeding carriage 92 in pair.

Further, the front panel 200 in this embodiment is placed on the feeding cart 92 before the back panel 300, and if the target height is set to be an integral multiple of the height of the pair of front panel 200 and back panel 300 plus the height of one front panel 200, the position sensor is triggered when the height of the front panel 200 and the back panel 300 on the feeding cart 92 is greater than the target height.

Second, the weight of the top panel 200 and the back panel 300 of the feeder carriage 92 is monitored by a weight sensor provided at the bottom of the feeder carriage 92.

If the weight of the top panel 200 and the back panel 300 on the feeding cart 92 is equal to or greater than the target weight, the weight sensor is triggered, the control system drives the feeding cart 92 to leave the loading position according to the signal output by the weight sensor, so as to unload the pair of top panel 200 and back panel 300 at the designated position, and simultaneously, the other feeding cart 92 reaches the loading position for loading. The method focuses on preventing the face plate 200 and back plate 300 on the feeder carriage 92 from crushing the feeder carriage 92 or damaging the floor due to excessive accumulation.

Specifically, if the target weight is set to be an integral multiple of the weight of the pair of the face plate 200 and the back plate 300, when the weight of the face plate 200 and the back plate 300 on the feeding carriage 92 is equal to the target weight, the weight sensor is triggered to drive the feeding carriage 92 to move away, so that the face plate 200 and the back plate 300 are placed on the feeding carriage 92 in pair.

Further, the front panel 200 in this embodiment is placed on the feeding carriage 92 before the back panel 300, and if the target weight is set to be an integral multiple of the weight of the pair of front panel 200 and back panel 300 plus the weight of one front panel 200, the weight sensor is triggered when the weight of the front panel 200 and back panel 300 on the feeding carriage 92 is greater than the target weight.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A method of manufacturing an acoustic barrier panel, comprising:

feeding along the length direction of the metal strip (100);

successively carrying out a first punching operation and a second punching operation on the metal strip (100) at a punching position, wherein the first punching operation punches a first blank plate (201) from the metal strip (100), and the second punching operation punches a second blank plate (301) from the metal strip (100);

conveying the first blank plate (201) and the second blank plate (301) to a downstream production line in sequence and in pairs, processing the first blank plate (201) into a panel (200), and processing the second blank plate (301) into a back plate (300);

and sequentially placing the pair of the panel (200) and the back plate (300) on a feeding car, and unloading the panel (200) and the back plate (300) at a specified position through the feeding car.

2. The method of manufacturing an acoustic barrier panel according to claim 1, wherein the metal strip (100) is fed in a roll form, the metal strip (100) is leveled and fed into a stock buffer tank, and the metal strip (100) is fed out of the stock buffer tank and then driven into the punching position.

3. A method of manufacturing an acoustic barrier panel according to claim 2, wherein the metal strip (100) introduced into the stock buffer pool forms a depression (101) under the influence of gravity, the unwinding speed of the coiled metal strip (100) being correspondingly reduced if the depth of the depression (101) is greater than a first target depth, and the unwinding speed of the coiled metal strip (100) being correspondingly increased if the depth of the depression (101) is less than a second target depth.

4. The method of manufacturing an acoustic barrier sheet according to claim 1, wherein the first blanking operation and the second blanking operation are separated by a first period of time, the second blanking operation and the subsequent first blanking operation are separated by a second period of time, and the first period of time and the second period of time are adjustable in duration.

5. The method of manufacturing an acoustic barrier panel according to claim 4, wherein the movement of the metal strip (100) is suspended while the first blanking operation and the second blanking operation are performed.

6. The method of manufacturing an acoustic barrier panel according to claim 1, wherein lateral bending locations are provided along the downstream production line, the lateral bending locations including a first lateral bending location and a second lateral bending location;

-performing a first transverse bending operation on the side of said first blank sheet (201) and said second blank sheet (301) facing downstream of the production line in said first transverse bending position, -performing a second transverse bending operation on the side of said first blank sheet (201) and said second blank sheet (301) facing upstream of the production line in said second transverse bending position.

7. The method of manufacturing an acoustic barrier panel according to claim 6, wherein the first transverse bending location and the second transverse bending location are disposed in sequence along the downstream production line;

if the lengths of the first blank plate (201) and the second blank plate (301) are increased, the interval time between the first transverse bending operation and the second transverse bending operation is increased accordingly, and if the lengths of the first blank plate (201) and the second blank plate (301) are decreased, the interval time between the first transverse bending operation and the second transverse bending operation is decreased accordingly.

8. The method of manufacturing an acoustic barrier panel according to claim 6, wherein a longitudinal bending position is further provided along the downstream production line, the longitudinal bending position and the transverse bending position are provided in this order along the downstream production line, and a longitudinal bending operation is performed on both sides of the first blank sheet (201) and the second blank sheet (301) extending along the downstream production line at the longitudinal bending position.

9. The method of manufacturing a sound barrier panel according to claim 1, wherein the pairs of the face plate (200) and the back plate (300) are sequentially placed on the feeding cart from bottom to top, the heights of the face plate (200) and the back plate (300) on the feeding cart are monitored, if the heights are equal to or greater than a target height, the feeding cart leaves a loading position for unloading, and the other feeding cart arrives at the loading position for loading.

10. The method of manufacturing an acoustic barrier panel according to claim 1, wherein the weight of the front panel (200) and the back panel (300) on the feed carriage is monitored, and if the weight is equal to or greater than a target weight, the feed carriage leaves a loading position to be unloaded, and another feed carriage arrives at the loading position to be loaded.