An automated impeller assembly machine

Abstract

The application discloses an automatic impeller assembling machine, feeding mechanisms, slitting mechanisms, edge rolling forming mechanisms and impeller assembling mechanisms which are sequentially distributed, the impeller assembling mechanism comprises an assembling frame, a middle disc feeding mechanism arranged on the assembling frame, a double-rotation cutting mechanism, an impeller disc moving-out mechanism and an impeller rolling mechanism, the double-rotation cutting mechanism is located between the middle disc feeding mechanism and the impeller disc moving-out mechanism, and a middle disc transfer gripper mechanism is arranged on the assembling frame and reciprocally swings between the middle disc feeding mechanism and the double-rotation cutting mechanism. The automatic impeller assembling machine is adopted to concentrate the blade slitting, edge rolling and assembling on a set of equipment, so that the production process is shortened, the personnel configuration is simplified, the production efficiency of the impeller is greatly improved under the automatic operation of the PLC control system, and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to a processing equipment, in particular to an automatic impeller assembling machine. BACKGROUND

[0002] The cross-flow fan is composed of an air duct, a motor and an impeller. The impeller is composed of blades and a center disc. The center disc is disc-shaped, and a plug hole is arranged at the center of the center disc. Limiting grooves are arranged on the circumference of the plug hole. Blade holes for mounting the blades are arranged on the center disc, and the blade holes are circumferentially distributed. In actual production and manufacturing, the assembly of the blades is still completed by manual work. In the existing market, a plug-in type assembling machine can be used to assemble the impeller. The plug-in type impeller assembling machine inserts the cut blades into the center disc one by one through a mechanical arm, and completes the assembly by manually sleeving the center disc and rolling and pressing it tightly. The labor cost is high, and the assembly efficiency is low, which greatly reduces the production cycle of the impeller.

[0003] For example, Chinese Patent Publication No. CN104493483B, named "Automatic assembly equipment for plug-in type impeller", comprises a base, a plug-in mold arranged on the base, a feeding and taking integrated device comprising a material box in which blades are placed and a first driving mechanism capable of taking the blades from the material box and placing them into the plug-in slots of the plug-in mold, and a rolling riveting device comprising a third driving mechanism capable of driving a riveting head to roll and press the plug-in blades so as to fix them with the plug-in bending portions outside the slot holes of the upper and lower pressing covers of the impeller.

[0004] The existing patent has the following defects: (1) matched blades need to be manufactured first, and then the blades are inserted into the corresponding blade holes of the center disc one by one through a mechanical device, which is complex in production process and low in production efficiency; (2) the plug-in type assembly method requires higher accuracy of the assembly equipment, and single plug-in may cause wear between the blades and the center disc. SUMMARY

[0005] The present application aims to overcome the problems of complex production process and low production efficiency of the plug-in type impeller assembling equipment, and provides an automatic impeller assembling machine which eliminates separate processing and feeding of blades and improves processing efficiency.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] An automatic impeller assembling machine comprises:

[0008] The feeding mechanism, the slitting mechanism, the edge rolling forming mechanism and the impeller assembling mechanism are sequentially distributed, the impeller assembling mechanism comprises an assembling frame, a middle disc feeding mechanism arranged on the assembling frame, a double-rotation cutting mechanism, an impeller disc moving-out mechanism and an impeller rolling mechanism, the double-rotation cutting mechanism is located between the middle disc feeding mechanism and the impeller disc moving-out mechanism, the assembling frame is provided with a middle disc transfer gripper mechanism, the middle disc transfer gripper mechanism reciprocates between the middle disc feeding mechanism and the double-rotation cutting mechanism, and the middle disc feeding mechanism, the double-rotation cutting mechanism, the impeller disc moving-out mechanism and the impeller rolling mechanism are connected in the PLC control system.

[0009] The aluminum strip is placed on the feeding mechanism, the aluminum strip on the feeding mechanism is inserted into the slitting mechanism to divide the aluminum strip into aluminum strips, the aluminum strips after slitting are inserted into the edge rolling forming mechanism one by one, the aluminum strips are formed by the edge rolling forming mechanism, the aluminum strips after edge rolling are inserted into the impeller assembling mechanism one by one, the aluminum strips are inserted into the double-rotation cutting mechanism, the aluminum strips are uniformly distributed in the circumferential direction, the middle disc feeding mechanism sends the middle disc to the double-rotation cutting mechanism through the middle disc transfer gripper mechanism, the aluminum strips are inserted into the blade holes of the middle disc one by one, the aluminum strips at both ends of the middle disc are cut and rotated by the double-rotation cutting mechanism to complete the preliminary production of the impeller, the preliminary production of the impeller is transferred to the impeller rolling mechanism through the impeller disc moving-out mechanism, and the impeller is rolled and pressed by the impeller rolling mechanism, so that the blade and the middle disc are not easy to loosen, and the production of the impeller is completed. The feeding mechanism, the slitting mechanism, the edge rolling forming mechanism and the impeller assembling mechanism can automatically complete the slitting production of the blade and the assembly and forming of the blade and the impeller, the steps of storage and feeding of the blade after production of the blade of the insertion type impeller assembling machine are omitted, the double-rotation cutting mechanism omits the step of inserting the blade into the middle disc one by one, the production efficiency is improved, the slitting, edge rolling and assembly of the blade are completed on a group of equipment, the process and the corresponding personnel configuration are simplified, the production process is shortened, and the impeller production efficiency can be greatly improved under the automatic operation of the PLC control system.

[0010] Preferably, the middle disc feeding mechanism comprises a rotating disc rotatingly arranged on a frame, a plurality of insertion rods vertically arranged on the rotating disc and distributed in the circumferential direction, a middle disc positioning clamp arranged on the frame, a lifting rod arranged below the rotating disc and a lifting rod hole arranged on the rotating disc and located on both sides of the insertion rod, the lifting rod is driven by a motor to move up and down in the lifting rod hole, and a limiting protrusion is arranged on the outer side wall of the insertion rod.

[0011] The middle disc is inserted on the insertion rod, the limiting protrusion is arranged on the insertion rod, the limiting protrusion cooperates with the limiting groove of the middle disc insertion hole to limit the middle disc on the rotating disc, the lifting rod is driven by a motor to lift and lower in the lifting rod hole, and the lifting rod hole lifts the middle disc sleeved on the insertion rod and extends into the middle disc positioning clamp.

[0012] As preferred, the positioning fixture for the middle disc comprises a positioning sleeve arranged on the frame, two pressing blocks arranged on the side wall of the positioning sleeve and moving radially along the positioning sleeve, a gripper corresponding to the pressing blocks and a driving cylinder for driving the gripper to open and close, and the positioning fixture for the middle disc is located above the ejector rod.

[0013] The positioning sleeve is located above the rotating disc, and the positioning sleeve is coaxially arranged with any inserted rod on the rotating disc. When the ejector rod lifts the middle disc, the middle disc on the inserted rod extends into the positioning sleeve, the driving cylinder opens and closes the gripper, the pressing blocks are clamped, the pressing blocks clamp the middle disc, and the thickness of the pressing blocks can be selected according to the number of middle discs. When three middle discs are needed, the thickness of the pressing blocks is set to be the sum of the thicknesses of the three middle discs, so that the middle disc transfer gripper structure can more accurately grasp the corresponding number of middle discs.

[0014] As preferred, the middle disc transfer gripper structure comprises a sliding seat arranged on the frame, a rotating cylinder slidingly arranged on the sliding seat, a rotating arm connected with the output shaft of the rotating cylinder, a first cantilever vertically arranged on the frame, and a second cantilever driven by a motor to translate on the frame. The rotating arm comprises a rotating seat connected with the output shaft of the rotating cylinder and a moving block slidingly arranged on the rotating seat, the moving direction of the moving block is perpendicular to the axis of the output shaft, one end of the moving block for grasping the middle disc is provided with a plurality of clamping blocks, the clamping blocks are driven by a motor to open and close, the clamping blocks extend into the center hole of the middle disc and cooperate with the center hole when the clamping blocks are closed, the lower end of the rotating arm is provided with an insertion piece, the insertion piece cooperates with the blade hole of the middle disc, the first cantilever is provided with a first upper support rod and a first lower support rod in the vertical direction, the first upper support rod and the first lower support rod are provided with elastic insertion pieces on the side wall facing the second cantilever, the outer end of the elastic insertion piece is inwardly retracted, the width between the first upper support rod and the first lower support rod is greater than the diameter of the middle disc, the second cantilever is provided with a second upper support rod and a second lower support rod in the vertical direction, the second upper support rod and the second lower support rod are provided with insertion pieces on the side facing the first cantilever, the insertion pieces cooperate with the blade hole of the middle disc, and the second cantilever is driven by a motor to make reciprocating motion on the frame towards the double rotating cutting mechanism.

[0015] The rotating cylinder moves axially along the first guide rod on the sliding seat, and the output shaft of the rotating cylinder is perpendicular to the axis of the first guide rod. When the middle disc is grasped, the rotating cylinder is located at the front end of the sliding seat, the rotating arm is vertically downward, the moving block moves downward on the rotating seat in the vertical direction, the lower end of the rotating arm extends into the positioning sleeve, the insertion piece at the lower end of the sliding block is inserted into the blade hole of the middle disc, the clamping blocks are inserted into the insertion hole of the middle disc and clamped, the moving block moves upward in the vertical direction, the rotating cylinder rotates the rotating arm so that the rotating arm is horizontally arranged, the rotating cylinder moves to the rear side along the first guide rod, the middle disc is inserted on the insertion piece of the second cantilever after passing through the first cantilever, the elastic insertion piece on the first cantilever pushes the middle disc on the second cantilever, so that the rotating arm does not bring the middle disc back when reciprocating, and the middle disc is not easy to fall off on the second cantilever.

[0016] As preferred, the double-rotation cutting mechanism comprises coaxially arranged first guide rod and second guide rod, sleeve set on the first guide rod, the sleeve, the front side rotating sleeve and the front side fixed sleeve, the front side rotating sleeve is matched with the front side of the front side fixed sleeve and rotates around the first guide rod through the cylinder, the second guide rod is sequentially sleeved with the rear side fixed sleeve, the rear side rotating sleeve and the shaft sleeve fixed on the frame, the rear side rotating sleeve is matched with the rear side of the rear side fixed sleeve and rotates around the second guide rod through the cylinder, the second guide rod moves axially along the shaft sleeve under the driving of the cylinder, the rear side fixed sleeve moves forward and backward along the linear guide rail through the driving of the motor, the side of the front side fixed sleeve towards the rear side fixed sleeve is provided with a limiting piece, the limiting piece is matched with the center hole of the center disc, the sleeve is provided with circumferentially distributed blade grooves, the blade grooves are matched with the blades of the impeller, the front side rotating sleeve, the front side fixed sleeve, the rear side fixed sleeve and the rear side rotating sleeve are all provided with blade grooves matched with the blades, and the double-rotation cutting mechanism further comprises a center disc moving device, the center disc moving device moves the center disc to a specified position through the driving of the motor.

[0017] The second cantilever is moved, the center disc is moved between the front side fixed sleeve and the rear side fixed sleeve, the center disc is coaxially arranged with the front side fixed sleeve, the second guide rod 7.2 passes through the second cantilever to press the center disc on the limiting piece of the front side fixed sleeve, the second cantilever is moved back to the original position, the aluminum strip sequentially passes through the front side rotating sleeve, the front side fixed sleeve, the center disc, the rear side fixed sleeve and the rear side rotating sleeve, the center disc moving device moves the center disc to a specified position, the front side rotating sleeve and the rear side rotating sleeve simultaneously rotate around the first guide rod and the second guide rod 7.2 under the driving of the cylinder, the aluminum strip at both ends is cut at the same time, and a preliminarily formed impeller product is formed. The side wall of the front side rotating sleeve is provided with a limiting groove, the side wall of the front side fixed sleeve is provided with a limiting block, the limiting block moves in the limiting groove, controls the rotation angle of the front side rotating sleeve, and makes the front side rotating sleeve and the front side fixed sleeve not loose; the side wall of the rear side rotating sleeve is provided with a limiting groove, the side wall of the rear side fixed sleeve is provided with a limiting block, the limiting block moves in the limiting groove, controls the rotation angle of the rear side rotating sleeve, and makes the rear side rotating sleeve and the rear side fixed sleeve not loose.

[0018] As preferred, the impeller disc moving-out mechanism comprises a clamp driving guide rail driven by a motor, an impeller clamp movably arranged on the clamp driving guide rail, a clamp arm rotating shaft arranged on the frame and driven by a motor, and a clamp arm rotating around the clamp arm rotating shaft, a limiting groove is arranged on the inner side wall of the impeller clamp, the limiting groove is used for limiting the center disc of the impeller and clamping the center disc, and the clamp arm is located on both sides of the impeller clamp.

[0019] When the double-rotation cutting is performed, the impeller is clamped in the motor drive under the drive of the clamp drive rail into the double-rotation cutting mechanism, after the double-rotation cutting, the impeller is located in the impeller clamp, the impeller clamp moves back to the original position, the position of the impeller clamp is set by the PLC control, the middle disc of the impeller cooperates with the limiting groove, so that the middle disc of the impeller moves to the corresponding position, the clamp arm clamps the two ends of the impeller, the clamp arm is rotated through the clamp arm rotating shaft, and the impeller is rotated to the impeller rolling mechanism below the impeller disc moving mechanism.

[0020] As preferred, the impeller rolling mechanism comprises a first roller and a second roller arranged side by side on the assembly machine rack and driven by a motor, a turnover arm arranged on the assembly machine rack, a rolling cylinder arranged on the turnover arm, and an impeller clamp arranged above the first roller and the second roller, the rolling cylinder is horizontally arranged with the first roller and the second roller, the turnover arm is rotated around the rotating shaft by the motor drive, the rolling cylinder is turned according to the opening and closing of the first roller and the second roller, the impeller clamp clamps the two ends of the impeller by the motor drive, the impeller rolling mechanism further comprises a blowing mechanism, a limiting seat is arranged above the first roller and the second roller, a elastic clamping block is arranged on the limiting seat, the elastic clamping block is elastically arranged on the limiting seat by a spring, a recess is arranged on the elastic clamping block, the recess cooperates with the middle disc of the impeller, and is used for limiting the position of the impeller and the middle disc of the impeller.

[0021] The impeller is moved to between the first roller and the second roller arranged side by side by the impeller disc moving mechanism, the turnover arm is turned by the motor drive, the rolling wheel on the turnover arm presses the impeller between the first roller and the second roller, the impeller clamp clamps the two ends of the impeller, the first roller and the second roller are driven to rotate, so that the middle disc on the impeller and the blade are screwed, and the blade and the middle disc are not easy to loosen. The elastic clamping block on the limiting seat corresponds to the middle disc of the impeller one by one, the recess is arranged on the elastic clamping block, the middle disc corresponds to the recess one by one, so that the middle disc is limited in the recess, the middle disc will not be deflected during rolling, and the assembly precision of the impeller is improved. The elastic clamping block is connected to the limiting seat by a spring or other elastic element, and the elastic element is tightly matched with the middle disc of the impeller.

[0022] As preferred, the feeding mechanism comprises a feeding frame, a unwinding wheel horizontally arranged on the feeding frame and driven by a motor; the slitting mechanism comprises a slitting frame, two support arms arranged on the slitting frame, a blade shaft rotatably arranged between the two support arms, and a slitting cutter arranged on the blade shaft; the edge rolling forming mechanism comprises an edge rolling frame, two support plates arranged on the edge rolling frame, and an edge rolling shaft arranged between the two support plates and driven by a motor, and the feeding end and the discharging end of the edge rolling forming mechanism are provided with guide plates, and the guide plates are provided with guide grooves.

[0023] The guide plates are used for correcting the position of the aluminum strip, and the aluminum strip passes through the guide grooves one by one.

[0024] As preferred, the feeding end of the slitting mechanism is provided with a compression roller, which is horizontally arranged with the blade shaft, the discharging end of the slitting mechanism is provided with a guide rod and a material collecting roller, the guide rod is parallel to the blade shaft, the blade shaft is divided into an upper blade shaft and a lower blade shaft, an upper slitting cutter head is sleeved on the upper blade shaft, and a lower slitting cutter head is arranged on the lower blade shaft, the upper slitting cutter head and the lower slitting cutter head are staggered and overlapped to form a slitting edge, and the upper blade shaft is adjusted and moved up and down in the vertical direction of the supporting arm through the adjusting device.

[0025] The compression roller at the feeding end is used for correcting the position of the aluminum strip, the guide rod is used for supporting the aluminum strip, and the material collecting roller is used for winding the corner materials on both sides of the aluminum strip. The adjusting device includes a screw rod connecting the supporting arm and the upper blade shaft, the gap between the upper blade shaft and the lower blade shaft can be adjusted, and only elastic elements such as springs or gaskets are arranged between the two ends of the upper blade shaft and the two ends of the lower blade shaft, so that the wear of the blade is reduced and the service life is prolonged.

[0026] As preferred, the edge rolling shaft includes an upper edge rolling shaft and a lower edge rolling shaft, the upper edge rolling shaft is provided with an upper edge rolling cutter, the lower edge rolling shaft is provided with a lower edge rolling cutter, the upper edge rolling cutter and the lower edge rolling cutter are used in cooperation, the upper edge rolling shaft is connected with the supporting plate through the adjusting device, and the two ends of the upper edge rolling shaft are adjusted and moved up and down in the vertical direction of the supporting plate through the adjusting device. The adjusting device includes a screw rod connecting the supporting plate and the upper edge rolling shaft, and only elastic elements such as springs or gaskets are arranged between the two ends of the upper edge rolling shaft and the two ends of the lower edge rolling shaft, so that the gap between the upper edge rolling cutter and the lower edge rolling cutter can be adjusted during the edge rolling forming, and the damage of the cutters is reduced.

[0027] Therefore, the present application has the following beneficial effects: the blade slitting, edge rolling and assembly are completed on a set of equipment, the process and the corresponding personnel configuration are simplified, the production process is shortened, and the production efficiency of the impeller can be greatly improved under the automatic operation of the PLC control system. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the present application.

[0029] Figure 2 is Figure 1 is a structural schematic view of the feeding mechanism in the present application.

[0030] Figure 3 is Figure 1 is a structural schematic view of the slitting mechanism in the present application.

[0031] Figure 4 is Figure 1 is a structural schematic view of the edge rolling forming mechanism in the present application.

[0032] Figure 5 isFigure 1 A structure diagram of the middle impeller assembling mechanism.

[0033] Figure 6 A structure diagram of the middle impeller assembling mechanism.

[0034] Figure 7 A structure diagram of the middle impeller assembling mechanism. Figure 1 A rear view of the middle impeller assembling mechanism.

[0035] Figure 8 A structure diagram of the middle disc feeding mechanism state one.

[0036] Figure 9 A structure diagram of the middle disc feeding mechanism state two.

[0037] Figure 10 A partial enlarged view of the middle disc feeding mechanism state two from the rear view angle.

[0038] Figure 11 A partial enlarged view of the middle disc feeding mechanism state two from the side view angle.

[0039] Figure 12 A structure diagram of the middle disc feeding mechanism in the impeller assembling mechanism.

[0040] Figure 13 A structure diagram of the double-rotating cutting mechanism in the impeller assembling mechanism.

[0041] As shown in the figure: feeding mechanism 1, feeding rack 1.1, unwinding wheel 1.2,

[0042] Striping mechanism 2, striping rack 2.1, support arm 2.2, blade shaft 2.3, striping cutter 2.4, pressure roller 2.5, guide rod 2.6, material collecting roller 2.7,

[0043] Edge forming mechanism 3, edge forming rack 3.1, support plate 3.2, edge forming shaft 3.3, guide plate 3.4,

[0044] Impeller assembling mechanism 4, assembling rack 5,

[0045] Middle disc feeding mechanism 6, rotating disc 6.1, inserting rod 6.2, ejector rod 6.3, ejector rod hole 6.4, limiting protrusion 6.5, positioning sleeve 6.6, pressing block 6.7, gripper 6.8, driving cylinder 6.9,

[0046] Double-rotating cutting mechanism 7, first guide rod 7.1, second guide rod 7.2, binding sleeve 7.3, template 7.4, front rotating template 7.5, front fixed template 7.6, rear fixed template 7.7, rear rotating template 7.8, shaft sleeve 7.9, middle disc moving device 7.10,

[0047] impeller disc moving-out mechanism 8, clamp driving guide rail 8.1, impeller clamp 8.2, clamp arm rotating shaft 8.3, clamp arm 8.4,

[0048] impeller rolling mechanism 9, first roller 9.1, second roller 9.2, overturning arm 9.3, rolling cylinder 9.4, impeller clamp 9.5, limiting seat 9.6, groove 9.7,

[0049] middle disc transferring gripper mechanism 10, sliding seat 10.1, rotating cylinder 10.2, rotating arm 10.3, first cantilever 10.4, second cantilever 10.5, clamping block 10.6, elastic insert 10.7, insert 10.8,

[0050] middle disc 11. DETAILED DESCRIPTION

[0051] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the present application will be further described below in combination with the drawings and specific embodiments.

[0052] As shown in the embodiments shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 An automatic impeller assembling machine comprises:

[0053] feeding mechanism 1, slitting mechanism 2, edge forming mechanism 3 and impeller assembling mechanism 4 are sequentially distributed, the impeller assembling mechanism 4 comprises an assembling frame 5, a middle disc feeding mechanism 6 arranged on the assembling frame 5, a double-rotating cutting mechanism 7, an impeller disc moving-out mechanism 8 and an impeller rolling mechanism 9, the double-rotating cutting mechanism 7 is located between the middle disc feeding mechanism 6 and the impeller disc moving-out mechanism 8, the assembling frame 5 is provided with a middle disc transferring gripper mechanism 10, the middle disc transferring gripper mechanism 10 reciprocates between the middle disc feeding mechanism 6 and the double-rotating cutting mechanism 7, and the middle disc feeding mechanism 6, the double-rotating cutting mechanism 7, the impeller disc moving-out mechanism 8 and the impeller rolling mechanism 9 are connected in a PLC control system.

[0054] The aluminum strip is placed on the feeding mechanism 1, the aluminum strip on the feeding mechanism 1 is inserted into the slitting mechanism 2 to divide the aluminum strip into aluminum strips, the aluminum strips after slitting are inserted into the edge rolling forming mechanism 3 one by one, the aluminum strips are rolled and formed by the edge rolling forming mechanism 3, the aluminum strips after edge rolling are inserted into the impeller assembling mechanism 4 one by one, the aluminum strips are inserted into the double-rotation cutting mechanism 7, the aluminum strips are evenly distributed in the circumferential direction, the middle disc feeding mechanism 6 sends the middle disc to the double-rotation cutting mechanism 7 through the middle disc transfer gripper mechanism 10, the aluminum strips are inserted into the blade holes of the middle disc one by one, the aluminum strips at both ends of the middle disc are rotated and cut by the double-rotation cutting mechanism 7 to complete the preliminary production of the impeller, the preliminarily produced impeller is transferred to the impeller rolling mechanism 9 through the impeller disc moving-out mechanism 8, and the impeller is rolled and pressed by the impeller rolling mechanism 9, so that the blades and the middle disc are not easy to loosen, and the production of the impeller is completed. The feeding mechanism 1, the slitting mechanism 2, the edge rolling forming mechanism 3 and the impeller assembling mechanism 4 distributed in sequence can automatically complete the slitting production of the blades and the assembly of the blades and the impeller, and the steps of storage and feeding after the blade production of the insertion type impeller assembling machine are omitted, the double-rotation cutting mechanism 7 omits the step of inserting the blades into the middle disc one by one, the production efficiency is improved, the slitting, edge rolling and assembly of the blades are completed on a group of equipment, the process and the corresponding personnel configuration are simplified, the production process is shortened, and automatic operation is realized under the control of the PLC control system, so that the production efficiency of the impeller can be greatly improved.

[0055] The above embodiment omits the steps of separate slitting, edge rolling, cutting and storage and feeding of the blades of the impeller, and completes the slitting, edge rolling and assembly of the blades on a group of equipment, simplifies the process and the corresponding personnel configuration, shortens the production process, and automatically operates under the control of the PLC control system, so that the production efficiency of the impeller can be greatly improved, the problems of complex production process and low production efficiency are solved, the requirement for the precision of the insertion type 10.8 assembly method for the assembly equipment is higher, and the single insertion piece 10.8 is easy to cause wear between the blades and the middle disc.

[0056] As shown in Figure 8 , Figure 9 , Figure 12 The middle disc feeding mechanism 6 includes a rotating disc 6.1 rotatingly arranged on a rack, a plurality of insertion rods 6.2 vertically arranged on the rotating disc 6.1 and distributed in the circumferential direction, a middle disc positioning clamp arranged on the rack, a top rod 6.3 arranged below the rotating disc 6.1, and a plurality of top rod holes 6.4 arranged on the rotating disc 6.1 and located on both sides of the insertion rods 6.2, the top rod 6.3 moves up and down in the top rod holes 6.4 by being driven by a motor, and a limiting protrusion 6.5 is arranged on the outer side wall of the insertion rod 6.2.

[0057] The middle disc is inserted on the insertion rod 6.2, the insertion rod 6.2 is provided with a limiting protrusion 6.5, the limiting protrusion 6.5 is matched with the limiting groove of the middle disc insertion hole, so that the middle disc is limited on the rotating disc 6.1, the top rod 6.3 is driven by the motor to ascend and descend in the top rod hole 6.4, and the top rod hole 6.4 lifts the middle disc set on the insertion rod 6.2 and extends into the middle disc positioning clamp.

[0058] As shown in Figure 8 , Figure 9 , the middle disc positioning clamp comprises a positioning sleeve 6.6 arranged on the rack, two pressing blocks 6.7 slidingly arranged on the side wall of the positioning sleeve 6.6 and moving along the radial direction of the positioning sleeve 6.6, a grabber 6.8 corresponding to the pressing block 6.7 and a driving cylinder 6.9 for driving the grabber 6.8 to open and close, and the middle disc positioning clamp is located above the top rod 6.3.

[0059] The positioning sleeve 6.6 is located above the rotating disc 6.1, the positioning sleeve 6.6 is coaxially arranged with any insertion rod 6.2 on the rotating disc 6.1, when the top rod 6.3 lifts the middle disc, the middle disc on the insertion rod 6.2 extends into the positioning sleeve 6.6, the driving cylinder 6.9 opens and closes the grabber 6.8, the pressing block 6.7 is clamped, the pressing block 6.7 clamps the middle disc, and the thickness of the pressing block 6.7 can be selected according to the number of middle discs, when three middle discs are needed, the thickness of the pressing block 6.7 is set as the sum of the thicknesses of the three middle discs, so that the middle disc transfer grabber mechanism 10 can more accurately grab the corresponding number of middle discs.

[0060] As shown in Figure 8 , Figure 9 , Figure 10As shown, the middle disc transfer gripper 10 includes a sliding seat 10.1 arranged on the rack, a rotary cylinder 10.2 slidingly arranged on the sliding seat 10.1, a rotary arm 10.3 connected with the output shaft of the rotary cylinder 10.2, a first cantilever 10.4 vertically arranged on the rack, and a second cantilever 10.5 driven by a motor to translate on the rack, the rotary arm 10.3 includes a rotary seat connected with the output shaft of the rotary cylinder 10.2 and a moving block slidingly arranged on the rotary seat, the moving direction of the moving block is perpendicular to the axis of the output shaft, the moving block is provided with a plurality of clamping blocks 10.6 at one end for gripping the middle disc, the clamping blocks 10.6 are driven by a motor to open and close, the clamping blocks 10.6 extend into the central insertion hole of the middle disc and cooperate with the central insertion hole when the clamping blocks 10.6 are closed, the lower end of the rotary arm 10.3 is provided with an insertion piece 10.8 which cooperates with the blade hole of the middle disc, the first cantilever 10.4 is provided with a first upper support rod and a first lower support rod in the vertical direction, the first upper support rod and the first lower support rod are provided with elastic insertion pieces 10.7 on the side wall facing the second cantilever 10.5, the outer ends of the elastic insertion pieces 10.7 are inwardly folded, the width between the first upper support rod and the first lower support rod is greater than the diameter of the middle disc, the second cantilever 10.5 is provided with a second upper support rod and a second lower support rod in the vertical direction, the second upper support rod and the second lower support rod are provided with insertion pieces 10.8 on the side facing the first cantilever 10.4, the insertion pieces 10.8 cooperate with the blade hole of the middle disc, and the second cantilever 10.5 is driven by a motor to make reciprocating motion on the rack towards the double rotary cutting mechanism 7.

[0061] The rotary cylinder 10.2 moves axially on the sliding seat 10.1 along the first guide rod 7.1, and the output shaft of the rotary cylinder 10.2 is perpendicular to the axis of the first guide rod 7.1. When gripping the middle disc, the rotary cylinder 10.2 is located at the front end of the sliding seat 10.1, the rotary arm 10.3 is vertically downward, the moving block moves downward on the rotary seat in the vertical direction, the lower end of the rotary arm 10.3 extends into the positioning sleeve 6.6, the insertion piece 10.8 at the lower end of the moving block is inserted into the blade hole of the middle disc, the clamping blocks 10.6 are inserted into the insertion hole of the middle disc for clamping, the moving block moves upward in the vertical direction, the rotary cylinder 10.2 rotates the rotary arm 10.3 so that the rotary arm 10.3 is horizontally arranged, the rotary cylinder 10.2 moves to the rear side along the first guide rod 7.1, the middle disc is inserted on the insertion piece 10.8 of the second cantilever 10.5 after passing through the first cantilever 10.4, and the elastic insertion pieces 10.7 on the first cantilever 10.4 top the middle disc on the second cantilever 10.5, so that the middle disc is not easily brought back by the rotary arm 10.3 during reciprocating motion, and the middle disc is not easily dropped on the second cantilever 10.5.

[0062] As Figure 11 , Figure 13As shown, the double-rotation cutting mechanism 7 includes coaxially arranged first guide rod 7.1 and second guide rod 7.2, sleeve 7.3 sequentially sleeved on the first guide rod 7.1, the template 7.4, the front rotating template 7.5 and the front fixed template 7.6, the front rotating template 7.5 cooperates with the front side of the front fixed template 7.6 and rotates around the first guide rod 7.1 by the air cylinder, the second guide rod 7.2 sequentially sleeved with the rear fixed template 7.7, the rear rotating template 7.8 and the shaft sleeve 7.9 fixed on the rack, the rear rotating template 7.8 cooperates with the rear side of the rear fixed template 7.7 and rotates around the second guide rod 7.2 by the air cylinder, the second guide rod 7.2 moves axially along the shaft sleeve 7.9 under the drive of the air cylinder, the rear fixed template 7.7 moves forward and backward along the linear guide rail by the motor drive, the side of the front fixed template 7.6 facing the rear fixed template 7.7 is provided with a limiting piece, the limiting piece cooperates with the center hole of the center plate, the template 7.4 is provided with circumferentially distributed blade grooves, the blade grooves cooperate with the blades of the impeller, the front rotating template 7.5, the front fixed template 7.6, the rear fixed template 7.7 and the rear rotating template 7.8 are all provided with blade grooves cooperating with the blades, and the double-rotation cutting mechanism 7 further includes a center plate moving device 7.10, which moves the center plate to a specified position by the motor drive.

[0063] The second cantilever 10.5 moves the center plate between the front fixed template 7.6 and the rear fixed template 7.7, the center plate is coaxially arranged with the front fixed template 7.6, the second guide rod 7.2 passes through the second cantilever 10.5 to press the center plate on the limiting piece of the front fixed template 7.6, the second cantilever 10.5 moves out to return to the original position, the aluminum strip sequentially passes through the front rotating template 7.5, the front fixed template 7.6, the center plate, the rear fixed template 7.7 and the rear rotating template 7.8, the center plate moving device 7.10 moves the center plate to a specified position, the front rotating template 7.5 and the rear rotating template 7.8 simultaneously rotate around the first guide rod 7.1 and the second guide rod 7.2 under the drive of the air cylinder, and the aluminum strip at both ends is cut at the same time, forming a preliminarily formed impeller product. The limiting groove is arranged on the side wall of the front rotating template 7.5, the limiting block is arranged on the side wall of the front fixed template 7.6, the limiting block moves in the limiting groove, controls the rotation angle of the front rotating template 7.5, and makes the front rotating template 7.5 cooperate with the front fixed template 7.6 without looseness; the limiting groove is arranged on the side wall of the rear rotating template 7.8, the limiting block is arranged on the side wall of the rear fixed template 7.7, the limiting block moves in the limiting groove, controls the rotation angle of the rear rotating template 7.8, and makes the rear rotating template 7.8 cooperate with the rear fixed template 7.7 without looseness.

[0064] As Figure 6 , Figure 7As shown in the figure, the impeller disc moving-out mechanism 8 includes a clamp driving guide rail 8.1 driven by a motor, an impeller clamp 8.2 movably arranged on the clamp driving guide rail 8.1, a clamp arm rotating shaft 8.3 arranged on the frame and driven by a motor, and a clamp arm 8.4 rotating around the clamp arm rotating shaft 8.3. A limiting groove is arranged on the inner side wall of the impeller clamp 8.2, which is used to limit the middle disc of the impeller and clamp the middle disc. The clamp arm 8.4 is arranged on both sides of the impeller clamp 8.2.

[0065] When the double-rotation cutting is performed, the impeller clamp 8.2 moves along the clamp driving guide rail 8.1 to the double-rotation cutting mechanism 7 under the driving of the motor. After the double-rotation cutting is performed, the impeller is located in the impeller clamp 8.2, and the impeller clamp 8.2 moves back to the original position. The position of the impeller clamp 8.2 is set by PLC control. The middle disc of the impeller is moved to the corresponding position by cooperating with the limiting groove. The clamp arm 8.4 clamps the two ends of the impeller. The clamp arm 8.4 is rotated by the clamp arm rotating shaft 8.3, and the impeller is rotated to the impeller rolling mechanism 9 located below the impeller disc moving-out mechanism 8.

[0066] As shown in the figure, Figure 6 The impeller rolling mechanism 9 includes a first roller 9.1 and a second roller 9.2 arranged side by side on the frame of the assembling machine and driven by a motor, a turnover arm 9.3 arranged on the frame of the assembling machine, a rolling cylinder 9.4 arranged on the turnover arm 9.3, and an impeller clamp 9.5 arranged above the first roller 9.1 and the second roller 9.2. The rolling cylinder 9.4 is horizontally arranged with the first roller 9.1 and the second roller 9.2. The turnover arm 9.3 is driven by a motor to rotate around a rotating shaft. The rolling cylinder 9.4 is opened and closed to turn over according to the first roller 9.1 and the second roller 9.2. The impeller clamp 9.5 clamps the two ends of the impeller by being driven by a motor. The impeller rolling mechanism 9 further includes a blowing mechanism. A limiting seat 9.6 is arranged above the first roller 9.1 and the second roller 9.2. A limiting seat 9.6 is arranged above the first roller 9.1 and the second roller 9.2. A spring elastic clamping block is arranged on the limiting seat 9.6. A groove 9.7 is arranged on the spring elastic clamping block. The groove 9.7 cooperates with the middle disc of the impeller to limit the position of the middle disc of the impeller.

[0067] The impeller is moved to the first roller 9.1 and the second roller 9.2 arranged in parallel by the impeller disc moving mechanism 8, the turnover arm 9.3 is turned over by the motor drive, the rolling wheel on the turnover arm 9.3 is pressed between the first roller 9.1 and the second roller 9.2, the impeller clamp 9.5 clamps the two ends of the impeller, and the first roller 9.1 and the second roller 9.2 are driven to rotate, so that the middle disc and the blades on the impeller are screwed, so that the blades and the middle disc are not easy to loosen. The elastic clamping block on the limiting seat 9.6 corresponds to the middle disc of the impeller one by one, the elastic clamping block is provided with a groove 9.7, the middle disc corresponds to the groove 9.7 one by one, so that the middle disc is limited in the groove 9.7, so that the middle disc will not be deflected during rolling, so that the assembly precision of the impeller is improved. The elastic clamping block is connected to the limiting seat 9.6 by a spring or other elastic element, and the elastic element is in close fit with the middle disc of the impeller.

[0068] As shown in Figure 1 , Figure 2 , the feeding mechanism 1 comprises a feeding rack 1.1, a horizontal unwinding wheel 1.2 arranged on the feeding rack 1.1 and driven by a motor; the slitting mechanism 2 comprises a slitting rack 2.1, two support arms 2.2 arranged on the slitting rack 2.1, a blade shaft 2.3 rotatably arranged between the two support arms 2.2, and a slitting cutter disc 2.4 sleeved on the blade shaft 2.3; the edge rolling forming mechanism 3 comprises an edge rolling rack 3.1, two support plates 3.2 arranged on the edge rolling rack 3.1, and an edge rolling shaft 3.3 arranged between the two support plates 3.2 and driven by a motor, and the feeding end and the discharging end of the edge rolling forming mechanism 3 are provided with guide plates 3.4, and the guide plates 3.4 are provided with guide grooves.

[0069] The guide plates 3.4 are used for correcting the position of the aluminum strip, and the aluminum strip passes through the guide grooves one by one.

[0070] As shown in Figure 1 , Figure 3 , the feeding end of the slitting mechanism 2 is provided with a press roller 2.5, the press roller 2.5 is horizontally arranged with the blade shaft 2.3, the discharging end of the slitting mechanism 2 is provided with a guide rod 2.6 and a material collecting roller 2.7, the guide rod 2.6 is parallel to the blade shaft 2.3, the blade shaft 2.3 is divided into an upper blade shaft 2.3 and a lower blade shaft 2.3, the upper blade shaft 2.3 is sleeved with an upper slitting cutter disc 2.4, and the lower blade shaft 2.3 is provided with a lower slitting cutter disc 2.4, the upper slitting cutter disc 2.4 and the lower slitting cutter disc 2.4 are staggered and overlapped to form a slitting edge, and the upper blade shaft 2.3 is adjusted and moved up and down in the vertical direction of the support arm 2.2 through the adjusting device.

[0071] The pressure roller 2.5 at the feeding end is used for correcting the position of the aluminum strip, the guide rod 2.6 is used for supporting the aluminum strip, and the material collecting roller 2.7 is used for winding the edge material on both sides of the aluminum strip. The adjusting device includes a screw rod connected with the support arm 2.2 and the upper blade shaft 2.3, and the gap between the upper blade shaft 2.3 and the lower blade shaft 2.3 can be adjusted. There is only a spring or a gasket between the two ends of the upper blade shaft 2.3 and the two ends of the lower blade shaft 2.3, so as to reduce the wear of the blade and prolong the service life.

[0072] As shown in Figure 1 , Figure 4 , the edge rolling shaft 3.3 includes an upper edge rolling shaft 3.3 and a lower edge rolling shaft 3.3. The upper edge rolling shaft 3.3 is provided with an upper edge rolling cutter, and the lower edge rolling shaft 3.3 is provided with a lower edge rolling cutter. The upper edge rolling cutter and the lower edge rolling cutter are used in cooperation. The upper edge rolling shaft 3.3 is connected with the support plate 3.2 through an adjusting device, and the two ends of the upper edge rolling shaft 3.3 are adjusted and moved up and down in the vertical direction of the support plate 3.2 through the adjusting device. The adjusting device includes a screw rod connected with the support plate 3.2 and the upper edge rolling shaft 3.3. There is only a spring or a gasket between the two ends of the upper edge rolling shaft 3.3 and the two ends of the lower edge rolling shaft 3.3, so that the gap between the upper edge rolling cutter and the lower edge rolling cutter can be adjusted during the edge rolling forming, and the damage of the cutter is reduced.

[0073] The working principle of the present application is as follows: the aluminum strip is wound on the unwinding mechanism 1 through the unwinding wheel 1.2, the aluminum strip is inserted into the slitting mechanism 2 through the pressure roller 2.5, the aluminum strip is divided into the required number of aluminum strips corresponding to the number of blades of the impeller through the slitting cutter head 2.4, the edge material on both sides of the aluminum strip is wound on the material collecting roller 2.7 driven by the motor, the aluminum strip is inserted into the guide groove of the guide plate 3.4 of the edge rolling forming mechanism 3 through the guide rod 2.6 one by one, and the number of aluminum strips corresponding to the number of blades required for edge rolling forming an impeller is improved, so as to improve the production efficiency. The edge-rolled aluminum strips are supported by a plurality of bundle sleeves 7.3 and inserted into the corresponding jigs 7.4 one by one. The adoption of a plurality of bundle sleeves 7.3 and a plurality of jigs 7.4 enables the aluminum strips to be regularly distributed. At this time, the center disc feeding mechanism 6 places the center disc 11 in the double rotary cutting mechanism 7 through the center disc transfer gripper mechanism 10. The second guide rod 7.2 presses the center disc against the limiting piece of the front fixed jig 7.6. At this time, the aluminum strips pass through the front rotating jig 7.5, the front fixed jig 7.6, the center disc, the rear fixed jig 7.7 and the rear rotating jig 7.8 in turn. The center disc moving device 7.10 moves the center disc to a specified position. The front rotating jig 7.5 and the rear rotating jig 7.8 rotate around the first guide rod 7.1 and the second guide rod 7.2 under the drive of the air cylinder, and cut the aluminum strips at both ends at the same time, forming a preliminarily formed impeller product. The rear fixed jig 7.7 drives the rear rotating jig 7.8 to move backward under the drive of the motor, so that the impeller product is separated. The impeller is transferred to the impeller rolling mechanism 9 through the impeller disc moving-out mechanism 8 for rolling forming, and finally the impeller is blown out through the air blowing mechanism.

[0074] The above-described embodiments are merely preferred embodiments of the present application, and are not intended to limit the specific implementation of the present application. Any equivalent changes made in accordance with the shape and structure of the present application should be included in the scope of protection of the present application.

Claims

1. An automated impeller assembly machine, characterized in that, The assembly includes a feeding mechanism, a slitting mechanism, a crimping and forming mechanism, and an impeller assembly mechanism arranged sequentially. The impeller assembly mechanism includes an assembly frame, a central disc feeding mechanism mounted on the assembly frame, a double-rotor cutting mechanism, an impeller disc removal mechanism, and an impeller rolling mechanism. The double-rotor cutting mechanism is located between the central disc feeding mechanism and the impeller disc removal mechanism. A central disc transfer gripper mechanism is provided on the assembly frame, which reciprocates between the central disc feeding mechanism and the double-rotor cutting mechanism. The central disc feeding mechanism, double-rotor cutting mechanism, impeller disc removal mechanism, and impeller... The rolling mechanism is connected to the PLC control system; the double-rotary cutting mechanism includes a coaxial first guide rod and a second guide rod, a sleeve, a template, a front rotating template, and a front fixed template, which are sequentially fitted on the first guide rod. The front rotating template cooperates with the front side of the front fixed template and rotates around the first guide rod via a cylinder. The second guide rod is sequentially fitted with a rear fixed template, a rear rotating template, and a bushing on the fixed frame. The rear rotating template cooperates with the rear side of the rear fixed template and rotates around the second guide rod via a cylinder. The second guide rod moves axially along the bushing under the drive of the cylinder.

2. The automated impeller assembly machine according to claim 1, characterized in that, The middle plate feeding mechanism includes a turntable rotatably mounted on the frame, insert rods vertically mounted on the turntable and distributed in a circle, a middle plate positioning fixture mounted on the frame, a top rod mounted below the turntable, and top rod holes located on both sides of the insert rods on the turntable. The top rods are driven by a motor to move up and down within the top rod holes, and the outer side wall of the insert rods is provided with limiting protrusions.

3. An automated impeller assembly machine according to claim 2, characterized in that, The mid-plate positioning fixture includes a positioning sleeve mounted on the frame, two clamping blocks that pass through the side wall of the positioning sleeve and move radially along the positioning sleeve, grippers that clamp the clamping blocks one-to-one, and a drive cylinder for driving the grippers to open and close. The mid-plate positioning fixture is located above the top rod.

4. An automated impeller assembly machine according to claim 1, characterized in that, The mid-plate transfer gripper mechanism includes a sliding seat mounted on a frame, a rotary cylinder slidably mounted on the sliding seat, a rotating arm connected to the output shaft of the rotary cylinder, a first cantilever vertically mounted on the frame, and a second cantilever that moves horizontally on the frame via a motor. The rotating arm includes a rotating seat connected to the output shaft of the rotary cylinder and a moving block slidably mounted on the rotating seat. The moving block moves perpendicular to the axis of the output shaft. One end of the moving block that grips the mid-plate is provided with several clamping blocks. These clamping blocks open and close via a motor. When closed, the clamping blocks extend into and engage with the central insertion hole of the mid-plate. The lower end of the rotating arm is provided with an insert. The insert engages with the blade hole of the middle plate. The first cantilever is provided with a first upper support rod and a first lower support rod in the vertical direction. The first upper support rod and the first lower support rod are provided with elastic inserts on the side wall facing the second cantilever. The outer end of the elastic insert is folded inward. The width between the first upper support rod and the first lower support rod is greater than the diameter of the middle plate. The second cantilever is provided with a second upper support rod and a second lower support rod in the vertical direction. The second upper support rod and the second lower support rod are provided with inserts on the side facing the first cantilever. The inserts engage with the blade hole of the middle plate. The second cantilever is driven by a motor to reciprocate on the frame toward the double-rotary cutting mechanism.

5. An automated impeller assembly machine according to claim 1, characterized in that, The rear fixed template moves back and forth along a linear guide rail driven by a motor. The front fixed template has a limiting member on the side facing the rear fixed template. The limiting member cooperates with the center insertion hole of the middle plate. The template has blade grooves distributed in a circle. The blade grooves cooperate with the blades of the impeller. The front rotating template, the front fixed template, the rear fixed template and the rear rotating template are all provided with blade grooves that cooperate with the blades. The double-rotation cutting mechanism also includes a middle plate moving device. The middle plate moving device moves the middle plate to a designated position driven by a motor.

6. An automated impeller assembly machine according to claim 1, characterized in that, The impeller disc removal mechanism includes a clamp drive rail driven by a motor, an impeller clamp movably mounted on the clamp drive rail, a clamp arm shaft mounted on the frame and driven by a motor, and clamp arms rotating around the clamp arm shaft. The inner side wall of the impeller clamp is provided with a limiting groove, which is used to limit and clamp the middle disc of the impeller. The clamp arms are located on both sides of the impeller clamp.

7. An automated impeller assembly machine according to claim 1, characterized in that, The impeller rolling mechanism includes a first and second roller, driven by a motor, arranged side-by-side on the assembly machine frame; a tilting arm, mounted on the assembly machine frame; a rolling cylinder, mounted on the tilting arm; and an impeller clamp positioned above and between the first and second rollers. The rolling cylinder is horizontally arranged with the first and second rollers. The tilting arm rotates around a pivot shaft driven by a motor. The rolling cylinder tilts and flips according to the opening and closing of the tilting arm and the first and second rollers. The impeller clamp clamps both ends of the impeller driven by a motor. The impeller rolling mechanism also includes an air blowing mechanism. A limiting seat is provided above the first roller, and a limiting seat is provided above the second roller. An elastic clamping block is provided on the limiting seat. The elastic clamping block is elastically mounted on the limiting seat by a spring. The elastic clamping block has a groove that cooperates with the impeller's central disc to limit the position of the impeller and the impeller's central disc.

8. An automated impeller assembly machine according to claim 1, characterized in that, The feeding mechanism includes a feeding frame and an unwinding wheel horizontally mounted on the feeding frame and driven by a motor; the slitting mechanism includes a slitting frame, two support arms mounted on the slitting frame, and a blade shaft rotatably mounted between the two support arms, with a slitting cutter disc sleeved on the blade shaft; the edge-forming mechanism includes an edge-forming frame, two support plates mounted on the edge-forming frame, and an edge-forming shaft mounted between the two support plates and driven by a motor, with guide plates at the feeding end and the discharge end of the edge-forming mechanism, and guide grooves on the guide plates.

9. An automated impeller assembly machine according to claim 8, characterized in that, The feeding end of the slitting mechanism is equipped with a pressure roller, which is horizontally arranged with the blade shaft. The discharge end of the slitting mechanism is equipped with a guide rod and a take-up roller, which is parallel to the blade shaft. The blade shaft is divided into an upper blade shaft and a lower blade shaft. An upper slitting cutter disc is sleeved on the upper blade shaft, and a lower slitting cutter disc is mounted on the lower blade shaft. The upper and lower slitting cutter discs are staggered and overlapped to form slitting cutting edges. The two ends of the upper blade shaft can be adjusted up and down in the vertical direction of the support arm through an adjustment device.

10. An automated impeller assembly machine according to claim 8, characterized in that, The edge-rolling shaft includes an upper edge-rolling shaft and a lower edge-rolling shaft. The upper edge-rolling shaft is equipped with an upper edge-rolling cutter, and the lower edge-rolling shaft is equipped with a lower edge-rolling cutter. The upper edge-rolling cutter and the lower edge-rolling cutter are used in conjunction. The upper edge-rolling shaft is connected to the support plate through an adjustment device. The two ends of the upper edge-rolling shaft can be adjusted up and down in the vertical direction of the support plate through the adjustment device.

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