Honeycomb aluminum plate feeding and stretching device and method

Abstract

The application relates to the technical field of honeycomb aluminum plate, in particular to a full-automatic feeding and stretching device and method for honeycomb aluminum plate, which comprises two parts of a honeycomb stretching machine 1 and a honeycomb aluminum blank feeding table 2. The honeycomb stretching machine 1 can realize vacuum adsorption initial stretching, honeycomb pin insertion and stretching to a specified length of a honeycomb aluminum plate blank 3. The honeycomb aluminum feeding table 1 can realize automatic transmission, automatic feeding to the stretching machine 1 and manual feeding at any time of the honeycomb aluminum blank 3. In the application, the honeycomb stretching machine can adjust the specific size of the free state of the honeycomb aluminum plate after springback by adjusting parameters such as stretching speed and variable pitch speed, and can be compatible with various size requirements. The structure adopts a synchronous belt with a stop block, which can satisfy manual feeding at any time, and does not affect the normal work of the stretching machine due to feeding.

Description

Technical Field

[0001] This invention relates to the field of honeycomb aluminum panel technology, specifically to a fully automatic feeding and stretching device and method for honeycomb aluminum panels. Background Technology

[0002] Honeycomb aluminum panels are an innovative composite material. Their core honeycomb structure is composed of aluminum alloy foil, formed using fully automated roll forming technology to create dense hexagonal units, resembling a honeycomb shape. This biomimetic structure allows the material to be lightweight while possessing excellent mechanical properties. The honeycomb core can evenly distribute loads, achieving a perfect combination of high strength and ultra-high flatness. The honeycomb cavity structure effectively blocks heat conduction, and the surface vent design allows for free gas flow, giving it excellent heat insulation, sound insulation, and fire resistance. Its environmentally friendly characteristics and comprehensive performance advantages are driving the development of industries such as building energy conservation and lightweight transportation vehicles, and it is widely recognized as one of the representative green engineering materials of the 21st century.

[0003] Current methods for stretching honeycomb aluminum panels largely rely on manual operation, such as manually fixing and stretching aluminum foil strips. Manual stretching cannot guarantee uniform stress on the aluminum panel, resulting in uneven stress at the edges and preventing the formation of a standard hexagonal shape. This affects aesthetics and mechanical properties, requiring manual trimming by workers, leading to significant manpower and material costs, low efficiency, high labor intensity, and low resource utilization. Furthermore, manual operation at a single workstation has a long cycle time and requires a secondary trimming process, resulting in high material loss. Therefore, there is an urgent need for an integrated automated feeding and high-precision stretching device to address the core issues of low efficiency, low resource utilization, and insufficient stability in existing technologies. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a honeycomb aluminum sheet feeding and stretching device to solve problems such as inconvenient feeding of honeycomb aluminum sheets and low trimming efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A honeycomb aluminum sheet feeding and stretching device includes a honeycomb stretching machine and a honeycomb aluminum blank feeding platform. The honeycomb stretching machine can realize vacuum adsorption initial stretching of the honeycomb aluminum sheet blank, honeycomb pin insertion, and stretching to a specified length. The honeycomb aluminum feeding platform can realize automatic transfer of the honeycomb aluminum blank, automatic feeding to the stretching machine, and manual replenishment at any time.

[0007] Preferably, the stretching machine includes a worktable. A fixed stretching side mechanism is installed on the right side of the worktable, and a movable stretching side mechanism is installed on the left side of the worktable. The frame of the movable stretching side is supported on linear guide rails on both sides of the worktable. The bottom of the movable stretching side is connected to a synchronous belt via a connector. A motor drives the synchronous belt to move the movable side left and right, thereby achieving the stretching function of the honeycomb aluminum panel. The worktable has a gap on the left side of the fixed stretching side as a feeding port. The feeding platform feeds the honeycomb aluminum panel between the fixed stretching side and the movable stretching side through the feeding port of the stretching machine.

[0008] Preferably, each of the two tension sides includes 27 sets of pin seat assemblies. Each pin seat assembly is connected by two guide rods, and the assemblies move equidistantly between each other via springs. The guide rods are supported on both sides by guide rod supports, which are mounted above the aluminum profile mounting plate. The pin seat assemblies at both ends are connected to the two ends of a ball screw via aluminum profiles. A motor drives the ball screw to move, achieving the closing and dispersing functions of the pin seat assemblies. The ball screw is mounted on the side of the aluminum profile mounting plate.

[0009] Preferably, the pin socket assembly includes a pin socket connecting plate, which has two graphite copper sleeves and a spring mounting groove in the middle for connecting other pin socket assemblies. The side of the pin socket connecting plate is connected to a vacuum suction block via an aluminum profile, and the vacuum suction block is equipped with four honeycomb blank suction cups. A pin assembly is located on the upper side of the pin socket connecting plate, and the left-right and up-down movement of the pin is achieved by a cylinder and a guide rail slider in the pin assembly.

[0010] Preferably, the feeding platform includes a worktable, on the upper side of which a feeding assembly and a blank lifting assembly are installed. The feeding assembly includes four sets of synchronous belts with stop blocks and synchronous pulleys. The pulleys are connected by guide rods to achieve synchronous feeding of the four synchronous belts to prevent material tilting. One end of the guide rod is connected to a servo motor. The honeycomb aluminum blank is placed between the stop blocks, and the servo motor drives the synchronous belts to move the honeycomb aluminum blank towards the right-side feeding port of the stretching machine. The blank lifting assembly includes three push plates located between the four sets of synchronous belts. The push plates are connected to the lifting plate and two guide rails via aluminum profiles. The guide rails are fixed to the lifting bracket on the worktable via linear bearings. The lifting bracket is connected to a cylinder, and the piston end of the cylinder is fixedly connected to the lifting plate.

[0011] In addition, the present invention also provides an automated feeding and stretching method for honeycomb aluminum panels, comprising the following steps:

[0012] S1. Initially, the movable stretching side is moved to the right side by the synchronous belt located at the bottom of the worktable and fixed to the movable stretching side slide to be close to the fixed stretching side. The distance between the two is slightly greater than the thickness of a honeycomb aluminum blank.

[0013] S2. The feeding platform adopts a structure of "servo motor + synchronous belt with stop blocks". The honeycomb aluminum blank is placed between the stop blocks of the belt conveyor of the feeding platform. The servo motor drives the belt to move the honeycomb aluminum blank to the feeding port of the stretching machine on the right.

[0014] S3. When the foremost honeycomb aluminum blank abuts against the two limit points on both sides of the guide chute, the displacement sensors on both sides simultaneously send signals to start the lifting cylinder. The lifting cylinder pushes the lifting plate to push the foremost honeycomb aluminum blank along the guide chute from the bottom of the worktable to between the fixed side and the movable stretching side of the stretching machine and maintain the height.

[0015] S4. The vacuum adsorption plates on both the fixed stretching side and the movable stretching side open the vacuum and adsorb the outermost aluminum foil of the honeycomb aluminum blank. The movable stretching side is slowly moved to the left by the synchronous belt feeding system to ensure that the vacuum adsorption plate reliably adsorbs the aluminum foil and unfolds it.

[0016] S5. When the honeycomb aluminum blank is stretched to a certain length and the openings on both sides are large enough to accommodate the insertion of the pins, the horizontal and vertical cylinders of the pins are activated in sequence to insert the pins into the holes of the honeycomb aluminum. The movable stretching machine continues to stretch to the left to the set length under the action of the synchronous belt feeding system. At the same time, during the stretching process of the honeycomb aluminum plate, the pitch-changing mechanism on the fixed / movable stretching side is driven by a servo motor to move the bidirectional ball screw towards the center at equal intervals to ensure that the honeycomb aluminum is stretched into a standard rectangle.

[0017] S6. After stretching is completed, the vertical and horizontal pin cylinders on the movable stretching side withdraw from the honeycomb aluminum insertion holes in sequence, and the honeycomb aluminum springs back to its free state under the action of tensile stress; the vertical and horizontal pin cylinders on the fixed stretching side withdraw in sequence, completing the entire stretching process.

[0018] S7. The lifting plate returns to its initial position, and the next honeycomb aluminum blank moves to the limit position of the guide chute under the push of the synchronous belt stop, waiting for the next cycle.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In this invention, the honeycomb stretching machine can adjust the specific dimensions of the honeycomb aluminum plate in its free state after springback by adjusting parameters such as stretching speed and pitch change speed, and can be compatible with various size requirements.

[0021] 2. In this invention, the structure uses a synchronous belt with stops, which allows for manual replenishment at any time, and the normal operation of the stretching machine is not affected by the feeding.

[0022] 3. In this invention, the feeding platform adopts a structure of "servo motor + synchronous belt with stop block". It relies on the coordinated control of servo motor, displacement sensor and cylinder to realize drawer feeding, which greatly saves feeding time and improves production efficiency.

[0023] 4. In this invention, a self-developed equal-pitch bidirectional pitch device is used to achieve bidirectional pitch change of the honeycomb aluminum plate through the cooperative motion of a servo motor and a bidirectional screw. This allows the aluminum plate to shorten longitudinally synchronously during lateral stretching to adapt to shape changes, greatly improving production efficiency and preventing damage to the honeycomb aluminum plate caused by unidirectional stretching. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the honeycomb aluminum plate loading and stretching device of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of a stretching machine for a honeycomb aluminum sheet feeding and stretching device according to the present invention.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0027] Figure 4 This is a schematic diagram of the pin seat assembly of a honeycomb aluminum plate loading and stretching device according to the present invention.

[0028] Figure 5 This is a schematic diagram of the synchronous belt feeding system of the honeycomb aluminum sheet loading and stretching device according to the present invention.

[0029] Figure 6 This is a schematic diagram of the loading platform structure of the honeycomb aluminum plate loading and stretching device of the present invention.

[0030] Figure 7 This is a schematic diagram of the feeding assembly of a honeycomb aluminum plate feeding and stretching device according to the present invention.

[0031] Figure 8 This is a schematic diagram of the blank lifting assembly structure of a honeycomb aluminum sheet loading and stretching device according to the present invention.

[0032] In the diagram: 1. Honeycomb stretching machine; 2. Honeycomb blank feeding platform; 3. Honeycomb aluminum plate blank; 4. Stretching worktable; 51. Fixed stretching side; 52. Movable stretching side; 6. Linear guide rail; 7. Stretching machine platform; 8. Stretching synchronous belt; 9. Stretching motor; 10. Crossbeam pad; 11. Feed port; 12. Pin holder assembly; 121. Pin holder connecting plate; 122. Graphite copper sleeve; 123. Spring mounting slot; 124. Vacuum suction block; 125. Honeycomb blank suction cup; 126. Pin assembly; 127. Horizontal cylinder; 128. Vertical cylinder; 129. Pin; 13. Guide rod; 14. Spring; 15. Guide rod support; 16. Aluminum profile mounting plate; 17. Ball screw; 18. Parallel motor; 19. Feeding worktable; 20. Feeding assembly; 201. Stop block; 202. Synchronous belt; 203. Synchronous belt pulley; 204. Guide rod; 205. Feeding servo motor; 21. Blank lifting assembly; 211. Push plate; 212. Lifting plate; 213. Guide rod; 214. Linear bearing; 215. Lifting bracket; 216. Lifting cylinder Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a honeycomb aluminum sheet feeding and stretching device, comprising a honeycomb stretching machine 1 and a honeycomb aluminum blank feeding platform 2. The honeycomb stretching machine 1 can realize vacuum adsorption initial stretching, honeycomb pin insertion, and stretching to a specified length for the honeycomb aluminum sheet blank 3. The honeycomb aluminum feeding platform 1 can realize automatic transmission of the honeycomb aluminum blank 3, automatic feeding to the stretching machine 1, and manual replenishment at any time.

[0035] Preferably, the stretching machine 1 includes a stretching machine worktable 4. A fixed stretching side mechanism 5 is installed on the right side of the stretching machine worktable 4, and a movable stretching side mechanism 5 is installed on the left side of the stretching machine worktable 4. The crossbeam pad 10 of the movable stretching side 5 is supported on the linear guide rails 6 on both sides of the worktable 4. The bottom of the movable stretching side is connected to the stretching synchronous belt 8 through a connector. The stretching synchronous belt 8 is driven by the stretching motor 9 to move the movable side left and right to realize the stretching function of the honeycomb aluminum plate. The worktable 4 has a gap on the left side of the fixed stretching side 5 as a feeding port 11. The feeding table 2 feeds the honeycomb aluminum plate blank 3 between the fixed stretching side 51 and the movable stretching side 52 through the stretching machine feeding port 11.

[0036] Preferably, each of the two stretching sides includes twenty-seven sets of pin seat assemblies 12. Each pin seat assembly 12 is connected by two guide rods 13, and the assemblies move equidistantly from one another via springs 14. The guide rods are supported on both sides by guide rod supports 15, which are mounted above the aluminum profile mounting plate 16. The pin seat assemblies 12 at both ends are connected to the two ends of a ball screw 17 via an aluminum profile. A closing motor 18 drives the ball screw 17 to move, achieving the closing and dispersing functions of the pin seat assemblies 12. The ball screw 17 is mounted on the side of the aluminum profile mounting plate 16.

[0037] Preferably, the pin socket assembly 12 includes a pin socket connecting plate 121, which has two graphite copper sleeves 122 and a spring mounting groove 123 in the middle for connecting other pin socket assemblies 12. The side of the pin socket connecting plate 121 is connected to a vacuum suction block 124 via an aluminum profile, and four honeycomb blank suction cups 125 are mounted on the vacuum suction block 124. A pin assembly 126 is located on the upper side of the pin socket connecting plate, and the pins move up and down and back and forth via a horizontal cylinder 127 and a vertical cylinder 128 in the pin assembly in conjunction with a guide rail slider.

[0038] Preferably, the feeding platform 2 includes a feeding worktable 19, on the upper side of which a feeding assembly 20 and a blank lifting assembly 21 are installed. The feeding assembly 20 includes four sets of synchronous belts 202 with baffle blocks 201 and synchronous pulleys 203. The pulleys 203 are connected by guide rods 204 to achieve synchronous feeding of the four synchronous belts to prevent material tilting. One end of the guide rod 204 is connected to a feeding servo motor 205. The honeycomb aluminum blank 3 is placed between the baffle blocks 201, and the feeding servo motor 205 drives the synchronous belts 202 to move the honeycomb aluminum blank 3 to the right side of the stretching machine feeding port 11. The blank lifting assembly 21 includes three push plates 211, located between the four sets of synchronous belts 202. The push plate 211 is connected to the lifting plate 212 and two guide rods 213 via aluminum profiles. The guide rail 213 is fixed to the loading workbench 19 via linear bearing 214 and lifting bracket 215. The lifting bracket 215 is connected to a lifting cylinder 216, and the piston end of the lifting cylinder 216 is fixedly connected to the lifting plate 212.

[0039] In addition, the present invention also provides an automated feeding and stretching method for honeycomb aluminum panels, comprising the following steps:

[0040] S1. Initially, the movable stretching side 52 is moved to the right side by the stretching timing belt 8, which is fixed to the slide plate of the movable stretching side 51 at the bottom of the stretching worktable 4, and is close to the fixed stretching side 51. The distance between the two is slightly greater than the thickness of a honeycomb aluminum blank.

[0041] S2. The feeding platform 2 adopts the structure of "servo motor + synchronous belt with stop blocks". The honeycomb aluminum blank 3 is placed between the stop blocks 201 of the feeding platform belt conveyor. The feeding servo motor 205 drives the synchronous belt 202 to move the honeycomb aluminum blank to the right stretching machine feeding port 11.

[0042] S3. When the foremost honeycomb aluminum blank abuts against the limit points on both sides of the guide chute, the displacement sensors on both sides simultaneously send signals to start the lifting cylinder 216. The lifting cylinder pushes the push plate to push the foremost honeycomb aluminum blank along the guide chute from the bottom of the worktable to between the fixed side 51 and the movable stretching side 52 of the stretching machine and maintain the height.

[0043] S4. The vacuum adsorption plates 125 on both sides of the fixed stretching side 51 and the movable stretching side 52 open the vacuum and adsorb the outermost aluminum foil of the honeycomb aluminum blank. The movable stretching side 52 is dragged by the synchronous belt feeding system and slowly moves to the left to ensure that the vacuum adsorption plate 125 can reliably adsorb the aluminum foil and unfold it.

[0044] S5. When the honeycomb aluminum blank is stretched to a certain length and the openings on both sides are large enough to accommodate the insertion of the pins 129, the horizontal cylinder 127 and the vertical cylinder 129 of the pins 129 are activated in sequence to insert the pins 129 into the holes of the honeycomb aluminum. The movable stretching side 52 continues to stretch to the left to the set length under the action of the synchronous belt feeding system. At the same time, during the stretching process of the honeycomb aluminum plate, the pitch mechanism of the fixed / movable stretching side is driven by the servo parallel motor 18 to drive the bidirectional ball screw 17 to move towards the center at equal intervals to ensure that the honeycomb aluminum is stretched into a standard rectangle.

[0045] S6. After stretching is completed, the vertical cylinder 128 and horizontal cylinder 127 on the movable stretching side 52 are sequentially withdrawn from the honeycomb aluminum insertion holes, and the honeycomb aluminum springs back to a free state under the action of tensile stress; the vertical cylinder 128 and horizontal cylinder 127 on the fixed stretching side 51 are sequentially withdrawn, completing the entire stretching process.

[0046] S7. The lifting plate 212 returns to its initial position, and the next honeycomb aluminum blank moves to the limit position of the guide chute under the push of the synchronous belt stop 201, waiting for the next cycle.

[0047] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A honeycomb aluminum sheet loading and stretching device, characterized in that: It consists of two parts: a honeycomb stretching machine (1) and a honeycomb aluminum blank feeding platform (2). The honeycomb stretching machine (1) can perform vacuum adsorption initial stretching, honeycomb pin insertion and stretching to the specified length of the honeycomb aluminum blank (3). The honeycomb aluminum feeding platform (1) can realize the automatic transfer of the honeycomb aluminum blank (3), automatic feeding to the stretching machine (1) and manual replenishment at any time.

2. The honeycomb aluminum sheet feeding and stretching device according to claim 1, characterized in that: The honeycomb stretching machine (1) includes a stretching machine workbench (4). A fixed stretching side mechanism (5) is installed on the right side of the stretching machine workbench (4), and a movable stretching side mechanism (5) is installed on the left side of the stretching machine workbench (4). The crossbeam pad (10) of the movable stretching side (5) is supported on the linear guide rails (6) on both sides of the workbench (4). The bottom of the movable stretching side is connected to the stretching synchronous belt (8) through a connector. The stretching synchronous belt (8) is driven by the stretching motor (9) to move the movable side left and right to realize the stretching function of the honeycomb aluminum plate. The workbench (4) has a gap on the left side of the fixed stretching side (5) as a feeding port (11). The feeding table (2) sends the honeycomb aluminum plate blank (3) between the fixed stretching side (51) and the movable stretching side (52) through the stretching machine feeding port (11).

3. The honeycomb aluminum sheet feeding and stretching device according to claim 1, characterized in that: The fixed tension side (51) and the movable tension side (52) each include twenty-seven sets of pin seat assemblies (12). The pin seat assemblies (12) are connected together by two guide rods (13), and the assemblies move at equal distances with each other through springs (14). The guide rods are supported by guide rod supports (15) on both sides, and the guide rod supports (15) are installed above the aluminum profile mounting plate (16). The pin seat assemblies (12) at both ends are connected to the two ends of the ball screw (17) through the aluminum profile. The ball screw (17) is driven by the closing motor (18) to move and realize the closing and dispersing functions of the pin seat assemblies (12). The ball screw (17) is installed on the side of the aluminum profile mounting plate (16).

4. The honeycomb aluminum sheet feeding and stretching device according to claim 1, characterized in that: The pin socket assembly (12) includes a pin socket connecting plate (121), which has two graphite copper sleeves (122) and a spring mounting groove (123) for connecting other pin socket assemblies (12). The side of the pin socket connecting plate (121) is connected to a vacuum suction block (124) via an aluminum profile, and four honeycomb blank suction cups (125) are installed on the vacuum suction block (124). The upper side of the pin socket connecting plate has a pin assembly (126), which moves the pin up and down and back and forth by means of a horizontal cylinder (127) and a vertical cylinder (128) in the pin assembly in cooperation with a guide rail slider.

5. The honeycomb aluminum sheet feeding and stretching device according to claim 1, characterized in that: The loading platform (2) includes a loading workbench (19), on which a feeding assembly (20) and a blank lifting assembly (21) are installed. The feeding assembly (20) includes four sets of synchronous belts (202) with baffle blocks (201) and synchronous pulleys (203). The pulleys (203) are connected by guide rods (204) to realize synchronous feeding of the four synchronous belts to prevent material tilting. One end of the guide rod (204) is connected to the feeding servo motor (205). The honeycomb aluminum blank (3) is placed between the baffle blocks (201), and the synchronous belts (202) driven by the feeding servo motor (205) move the honeycomb aluminum blank (3) to the right stretching machine loading port (11). The blank lifting assembly (21) includes three push plates (211) located between the four sets of synchronous belts (202). The push plate (211) is connected to the lifting plate (212) and two guide rods (213) through aluminum profiles. The guide rail (213) is fixed on the loading workbench (19) to the lifting bracket (215) through linear bearing (214). The lifting bracket (215) is connected to the lifting cylinder (216). The piston end of the lifting cylinder (216) is fixedly connected to the lifting plate (212).

6. The present invention also provides an automated feeding and stretching method for honeycomb aluminum panels, characterized in that... Includes the following steps: S1. Initially, the active stretching side (52) is moved to the right side by the stretching timing belt (8) which is fixed to the slide plate of the active stretching side (51) at the bottom of the stretching worktable (4) and close to the fixed stretching side (51). The distance between the two is slightly greater than the thickness of a honeycomb aluminum blank. S2. The loading platform (2) adopts the structure of "servo motor + synchronous belt with stop block". The honeycomb aluminum blank (3) is placed between the stop block (201) of the loading platform belt conveyor. The synchronous belt (202) driven by the loading servo motor (205) moves the honeycomb aluminum blank to the loading port (11) of the stretching machine on the right. S3. When the foremost honeycomb aluminum blank touches the two limit points on both sides of the guide chute, the displacement sensors on both sides simultaneously send signals to start the lifting cylinder (216). The lifting cylinder pushes the push plate to push the foremost honeycomb aluminum blank along the guide chute from the bottom of the workbench to between the fixed side (51) and the movable stretching side (52) of the stretching machine and maintain the height. S4. The vacuum adsorption disks (125) on both sides of the fixed stretching side (51) and the movable stretching side (52) open the vacuum and adsorb the outermost aluminum foil of the honeycomb aluminum blank. The movable stretching side (52) is dragged by the synchronous belt feeding system to slowly move to the left to ensure that the vacuum adsorption disk (125) can reliably adsorb the aluminum foil and unfold it. S5. When the honeycomb aluminum blank is stretched to a certain length and the openings on both sides are large enough to accommodate the insertion of the pin (129), the horizontal cylinder (127) and vertical cylinder (129) of the pin (129) are activated in sequence to insert the pin (129) into the hole of the honeycomb aluminum. The movable stretching side (52) continues to stretch to the left to the set length under the action of the synchronous belt feeding system. At the same time, during the stretching process of the honeycomb aluminum plate, the pitch mechanism of the fixed / movable stretching side is driven by the servo parallel motor (18) to drive the bidirectional ball screw (17) to move towards the center at equal distances to ensure that the honeycomb aluminum is stretched into a standard rectangle. S6. After stretching is completed, the vertical cylinder (128) and horizontal cylinder (127) of the movable stretching side (52) are withdrawn from the honeycomb aluminum insertion hole in sequence, and the honeycomb aluminum rebounds to the free state under the action of tensile stress; the vertical cylinder (128) and horizontal cylinder (127) of the fixed stretching side (51) are withdrawn in sequence, completing the entire stretching process. S7. The lifting plate (212) returns to the initial position, and the next honeycomb aluminum blank moves to the limit position of the guide groove under the push of the synchronous belt stop (201) and waits for the next cycle.

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