Multi-profile composite palletizing production line

Abstract

This invention discloses a multi-profile composite palletizing production line, including a chain conveyor platform for forward conveying profiles, a profile collection and separation device arranged at the input end of the chain conveyor platform, a stop assembly at the output end of the chain conveyor platform, and a profile palletizing device arranged at the picking station. The profile palletizing device can move profiles blocked by the stop assembly and stopped at the picking station forward to the palletizing station. A transition roller group is arranged in front of the chain conveyor platform, which can guide and convey the profiles released by the stop assembly forward to the palletizing station. An output roller conveyor for outputting profiles is arranged below the palletizing station, and a palletizing lifting trolley is arranged at the palletizing station. The palletizing lifting trolley can extend into the palletizing station to receive the profiles transferred and conveyed by the profile palletizing device or the transition roller group and transfer the received profiles to the output roller conveyor. This invention has the advantage of being applicable to the automatic palletizing of various profiles.

Description

Technical Field

[0001] This invention relates to the field of profile palletizing technology, and specifically to a multi-profile composite palletizing production line. Background Technology

[0002] Currently, after producing round bars, small-diameter flat bars, large-diameter flat bars, and forklift flats, profile manufacturing companies rely on manual stacking at palletizing stations. This manual stacking method suffers from high labor intensity, low efficiency, and significant safety hazards for workers. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-profile composite palletizing production line that can be applied to the automatic palletizing of various profile specifications.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a multi-profile composite palletizing production line, comprising a chain conveyor platform for forward conveying profiles, a profile grouping and separating device arranged at the input end of the chain conveyor platform for grouping and separating profiles according to a specified palletizing width, the output end of the chain conveyor platform located at the picking station, and a stop block assembly provided at the output end of the chain conveyor platform, the stop block assembly being able to block the profiles so that the profiles remain at the picking station or to release the profiles, and a profile grouping and separating device arranged at the picking station. The profile stacking device can move profiles blocked by the stop assembly at the picking station forward to the stacking station. A transition roller group is set in front of the chain conveyor platform, which can guide and transport the profiles released by the stop assembly forward to the stacking station. An output roller conveyor is set below the stacking station for outputting profiles. A stacking lifting trolley is arranged at the stacking station, which can extend into the stacking station to receive the profiles transferred and transported by the profile stacking device or the transition roller group and transfer the received profiles to the output roller conveyor.

[0005] Furthermore, in the aforementioned multi-profile composite palletizing production line, the profile collection and separation device includes a material support mechanism and a material blocking mechanism. The material support mechanism and the material blocking mechanism are sequentially and spaced apart on the frame at the chain conveyor platform along the profile forward conveying direction, with the distance between the material support mechanism and the material blocking mechanism being the profile palletizing width. The material blocking mechanism includes a material blocking plate and a material blocking hydraulic cylinder. The cylinder body of the material blocking hydraulic cylinder is hinged to the frame, and the piston rod of the material blocking hydraulic cylinder is hinged to one end of an L-shaped material blocking connecting plate. The middle part of the material connecting plate is hinged to the frame. The other end of the L-shaped material blocking connecting plate is hinged to one end of the material blocking connecting rod, and the other end of the material blocking connecting rod is hinged to the lower end of the material blocking plate. The middle part of the material blocking plate is hinged to the frame via a rotating shaft. When the piston rod of the material blocking hydraulic cylinder extends, it can drive the material blocking plate to rotate upward around the axis and flip it out of the chain conveyor platform to block the profiles on the chain conveyor platform through the L-shaped material blocking connecting plate and the material blocking connecting rod. When the piston rod of the material blocking hydraulic cylinder retracts, it can drive the material blocking plate to rotate downward around the axis and flip it back onto the chain conveyor platform through the L-shaped material blocking connecting plate and the material blocking connecting rod. Below, profiles are placed on a chain conveyor platform. The structure of the material support mechanism includes: a material support frame with a material support platform at the top; an upper connecting plate and a lower L-shaped material support connecting plate are provided on one side of the material support frame; one end of the upper connecting plate is hinged to the frame, and the other end of the upper connecting plate is hinged to the upper part of the material support frame; the middle part of the lower L-shaped material support connecting plate is hinged to the frame, and one end of the lower L-shaped material support connecting plate is hinged to the lower part of the material support frame; the upper connecting plate, the lower L-shaped material support connecting plate, the frame, and the material support frame together form a parallel four-bar linkage structure; a material support hydraulic cylinder is also provided on the frame. The cylinder body of the material-supporting hydraulic cylinder is hinged to the frame, and the piston rod of the material-supporting hydraulic cylinder is hinged to the other end of the lower L-shaped material-supporting connecting plate. When the piston rod of the material-supporting hydraulic cylinder extends, it can drive the material-supporting frame to move upward through the parallel four-bar linkage structure until the material-supporting platform is above the chain conveyor platform, so that the material-supporting platform lifts the profile on the chain conveyor platform. When the piston rod of the material-supporting hydraulic cylinder retracts, it can drive the material-supporting frame to move downward through the parallel four-bar linkage structure until the material-supporting platform is below the chain conveyor platform, so that the profile on the material-supporting platform falls back onto the chain conveyor platform.

[0006] Furthermore, in the aforementioned multi-profile composite palletizing production line, the structure of the material support platform of the material support frame includes: a fixed support platform and a movable support platform. The fixed support platform is fixedly installed on the top of the material support frame, and the movable support platform is slidably mounted on the fixed support platform. A positioning and locking mechanism is provided between the movable support platform and the fixed support platform. The structure of the positioning and locking mechanism includes: elongated waist holes on both sides of the fixed support platform, and guide bolts on both sides of the movable support platform. The guide bolts on both sides of the movable support platform correspond one-to-one with the elongated waist holes on both sides of the fixed support platform. The guide bolts on both sides of the movable support platform extend from the corresponding elongated waist holes of the fixed support platform and are threaded with locking nuts. A material stop extends integrally from the rear end of the fixed support platform. When the material support platform moves up to lift the profile on the chain conveyor platform, the lower edge of the material stop will be lower than the upper edge of the profile on the chain conveyor platform.

[0007] Furthermore, in the aforementioned multi-profile composite palletizing production line, the structure of the profile palletizing device includes: a support frame arranged below the chain conveyor platform; a swing frame mounted on the support frame, the front end of the swing frame being a drive end and the rear end being a hinge end; the hinge end of the swing frame being hinged to the support frame via a connecting shaft; a front-to-back sliding rail mounted in the swing frame; a translation frame slidably mounted on the sliding rail; a transfer platform mounted at the front end of the translation frame; the transfer platform consisting of several javelin-type transfer rods arranged side-by-side with their tips pointing forward; a stop block protruding from the transfer platform mounted on the transfer platform; and a mechanism between the translation frame and the swing frame for driving the translation frame to swing relative to each other. The frame is driven by a translation mechanism that moves forward or backward. When the frame moves forward, it can simultaneously drive the transfer platform to move forward from the picking station to the stacking station. When the frame moves backward, it can simultaneously drive the transfer platform to move backward from the stacking station to the picking station. A swing drive mechanism is provided between the drive end of the swing frame and the support to drive the swing frame to rotate upward or downward. When the transfer platform is located at the picking station, the swing frame rotates upward and can simultaneously drive the transfer platform to lift up the profile on the chain conveyor platform located at the picking station. When the transfer platform is located at the stacking station, the swing frame rotates downward and can place the lifted profile on the stacking lifting trolley that extends into the stacking station.

[0008] Furthermore, in the aforementioned multi-profile composite palletizing production line, the structure of the translation drive mechanism includes: a first rack with a forward and backward orientation installed at the bottom of the translation frame; a first translation motor installed in the swing frame; a first gear meshing with the first rack installed on the output shaft of the first translation motor; the first translation motor drives the translation frame to move forward or backward relative to the swing frame synchronously through the cooperation of the first gear and the first rack; the structure of the swing drive mechanism includes: a support roller supported at the bottom of the drive end of the swing frame; a swing motor installed on the support; an eccentric cam corresponding to the support roller fitted on the output shaft of the swing motor; under its own weight, the support roller of the swing frame always presses against the eccentric cam; the swing motor drives the eccentric cam to rotate, thereby driving the swing frame to rotate upward or downward.

[0009] Furthermore, the aforementioned multi-profile composite palletizing production line further includes: a profile pressing mechanism arranged at the palletizing station. The profile pressing mechanism comprises: a pressing frame, a pressing plate on the pressing frame, the middle part of the pressing plate being hinged to the upper part of the pressing frame via a pin, a pressing hydraulic cylinder on the pressing frame, the cylinder body of the pressing hydraulic cylinder being hinged to the pressing frame, and the piston rod of the pressing hydraulic cylinder being hinged to the lower end of the pressing plate. When the piston rod of the pressing hydraulic cylinder extends, it can drive the pressing plate to rotate downward around the pin axis to press down on the profile that has moved to the palletizing station with the transfer platform. When the piston rod of the pressing hydraulic cylinder retracts, it can drive the pressing plate to rotate upward around the pin axis to move away from the profile located at the palletizing station. A limiting plate is fixed on the pressing frame, and an arc-shaped limiting hole concentric with the pin axis is provided on the limiting plate. A guide shaft extending into and moving along the arc-shaped limiting hole is installed at the lower end of the pressing plate.

[0010] Furthermore, in the aforementioned multi-profile composite palletizing production line, the palletizing lifting trolley structure includes: a trolley support, a lifting seat mounted on the trolley support, a translating arm mounted on the lifting seat, and a carrier plate for supporting the profiles mounted on the translating arm. The carrier plate has a sloping surface that is lower in the front and higher in the back, and the carrier plate is supported on the translating arm by springs. A backrest plate is provided in front of the carrier plate for the profiles on the carrier plate to rest against. The translating arm can move back and forth relative to the lifting seat under the drive of the front and rear translation components, so that the carrier plate can move into the palletizing station to support the profiles. The structure of the front and rear translation components includes: a second rack installed at the bottom of the translating arm, the second rack being arranged in a front-to-back direction, and mounted on the lifting seat. A second translation motor is installed, and a second gear meshing with a second rack is installed on the output shaft of the second translation motor. The lifting seat can move up and down relative to the trolley support under the drive of the lifting assembly, so that the material carrier can transfer the received profile to the output roller conveyor. The structure of the lifting assembly includes: a vertical slide rail is provided on the trolley support, the lifting seat is slidably mounted on the vertical slide rail, an upper sprocket driven by a motor is supported at the upper end of the trolley support, a lower sprocket is supported at the lower end of the trolley support, a chain is wound between the upper sprocket and the lower sprocket, one side of the chain is fixed to the lifting seat, when the motor drives the chain to rotate through the upper sprocket and the lower sprocket, it can synchronously drive the lifting seat to move up or down relative to the trolley support along the vertical slide rail.

[0011] Furthermore, in the aforementioned multi-profile composite palletizing production line, a roller conveyor width adjustment mechanism is provided at the output roller conveyor to make the conveyor width of the output roller conveyor consistent with the palletizing width of the profiles transferred by the palletizing lifting trolley. The structure of the roller conveyor width adjustment mechanism includes: an adjustment bracket provided at the gap between the conveyor rollers of the output roller conveyor; a movable baffle and a fixed baffle are provided on the adjustment bracket; the movable baffle and the fixed baffle are arranged on the front and rear sides of the output roller conveyor; the fixed baffle is fixed on the adjustment bracket; a front-to-back track is provided on the adjustment bracket; the movable baffle is slidably mounted on the track; a hydraulic cylinder is provided at the lower part of the adjustment bracket; the cylinder body of the hydraulic cylinder is hinged to the adjustment bracket; the piston rod of the hydraulic cylinder is hinged to one end of a connecting plate; the middle part of the connecting plate is hinged to the adjustment bracket; the other end of the connecting plate is hinged to one end of a connecting rod; the other end of the connecting rod is hinged to the lower end of a fixed block; and the fixed block is fixedly installed at the bottom of the movable baffle.

[0012] Through the implementation of the above technical solution, the beneficial effects of the present invention are: it can be applied to the stacking of various specifications of profiles, has a wide range of applications, can automatically complete the stacking of various profiles, greatly reduces the labor intensity of workers, improves work efficiency, and has high safety in use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a multi-profile composite palletizing production line according to the present invention.

[0014] Figure 2 This is a schematic diagram of the profile collection and discharge separation device.

[0015] Figure 3 This is a schematic diagram showing the operating state of the material blocking mechanism when it is in a blocking state.

[0016] Figure 4 This is a schematic diagram showing the usage state of the material blocking mechanism when it is in the release state.

[0017] Figure 5 This is a schematic diagram showing the material support mechanism in use when it is lowering the profile.

[0018] Figure 6 This is a schematic diagram showing the material support mechanism in use when it is in the upward lifting state of the profile.

[0019] Figure 7 This is a schematic diagram of the profile stacking device.

[0020] Figure 8 This is a schematic diagram of the chain conveyor platform.

[0021] Figure 9 for Figure 7 A schematic diagram of the structure after the chain removal conveyor platform is installed.

[0022] Figure 10 This is a schematic diagram showing the material transfer platform in its usage state when it is in the material picking position and not raised upwards.

[0023] Figure 11 This is a schematic diagram showing the usage status of the material transfer platform when it is in the palletizing station.

[0024] Figure 12 This is a schematic diagram showing the usage state of the pressure plate in the profile pressing mechanism when it is in the downward pressing state.

[0025] Figure 13 This is a schematic diagram of the palletizing lifting trolley and the output roller conveyor.

[0026] Figure 14 This is a schematic diagram of the palletizing lifting trolley.

[0027] Figure 15 for Figure 14 An enlarged schematic diagram of part A shown in the image.

[0028] Figure 16 This is a schematic diagram of the output roller conveyor and the roller conveyor surface width adjustment mechanism. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] like Figure 1 As shown, the multi-profile composite palletizing production line includes a chain conveyor platform 1 for forward conveying of profiles. The chain conveyor platform 1 consists of several conveying rollers arranged side by side at intervals. A profile grouping and separating device 2 is arranged at the input end of the chain conveyor platform 1. The profile grouping and separating device 2 is used to group and separate the profiles according to a specified palletizing width. The output end of the chain conveyor platform 1 is located at the picking station. A stop block assembly 3 is provided at the output end of the chain conveyor platform 1. The stop block assembly 3 can block the profiles to stop them at the picking station or allow the profiles to pass through. A [missing information - likely a device or equipment] is arranged at the picking station. A profile stacking device 4 is provided, which can move profiles blocked by the stop block assembly 3 and stopped at the picking station forward to the stacking station; a transition roller group 5 is provided in front of the chain conveyor platform 1, which can guide and transport the profiles released by the stop block assembly 3 forward to the stacking station; an output roller conveyor 6 for outputting profiles is provided directly below the stacking station; a stacking lifting trolley 7 is arranged at the stacking station, which can extend into the stacking station to receive the profiles transferred and transported by the profile stacking device 4 or the transition roller group 5 and transfer the received profiles to the output roller conveyor.

[0031] In this embodiment, as Figure 2 , Figure 3 , Figure 4, Figure 5 , Figure 6 As shown, the profile collection and separation device 2 includes a material support mechanism and a material blocking mechanism. The material support mechanism and the material blocking mechanism are arranged sequentially and at intervals on the frame 8 of the chain conveyor platform 1 along the forward conveying direction of the profiles. The distance between the material support mechanism and the material blocking mechanism is the width of the profile stack. The material blocking mechanism includes a material blocking plate 9 and a material blocking hydraulic cylinder 10. The cylinder body of the material blocking hydraulic cylinder 10 is hinged to the frame 8. The piston rod of the material blocking hydraulic cylinder 10 is hinged to one end of the L-shaped material blocking connecting plate 11. The middle part of the L-shaped material blocking connecting plate 11 is hinged to the frame 8. The other end of the L-shaped material blocking connecting plate 11 is hinged to the material blocking plate 9. One end of the material connecting rod 12 is hinged to the bottom, and the other end of the material blocking connecting rod 12 is hinged to the bottom of the material blocking plate 9. The middle part of the material blocking plate 9 is hinged to the frame 8 via the rotating shaft 13. When the piston rod of the material blocking hydraulic cylinder 10 extends, it can drive the material blocking plate 9 to rotate upward around the rotating shaft 13 and flip it out of the chain conveyor platform 1 to block the profiles on the chain conveyor platform 1 through the L-shaped material blocking connecting plate 11 and the material blocking connecting rod 12. When the piston rod of the material blocking hydraulic cylinder 10 retracts, it can drive the material blocking plate 9 to rotate downward around the rotating shaft 13 and flip it under the chain conveyor platform 1 to release the profiles on the chain conveyor platform 1. The structure of the material support mechanism includes: a material support frame 15 with a material support platform 14 at the top; an upper connecting plate 16 and a lower L-shaped material support connecting plate 17 are provided on one side of the material support frame 15; one end of the upper connecting plate 16 is hinged to the frame 8, and the other end of the upper connecting plate 16 is hinged to the upper part of the material support frame 15; the middle part of the lower L-shaped material support connecting plate 17 is hinged to the frame 8, and one end of the lower L-shaped material support connecting plate 17 is hinged to the lower part of the material support frame 15; the upper connecting plate 16, the lower L-shaped material support connecting plate 17, the frame 8, and the material support frame 15 together form a parallel four-bar linkage structure; a material support hydraulic cylinder 18 is also provided on the frame 8. The cylinder body of the hydraulic cylinder 18 is hinged to the frame 8. The piston rod of the material-supporting hydraulic cylinder 18 is hinged to the other end of the lower L-shaped material-supporting connecting plate 17. When the piston rod of the material-supporting hydraulic cylinder 18 extends, it can drive the material-supporting frame 15 to move upward through the parallel four-bar linkage structure until the material-supporting platform 14 is above the chain conveyor platform 1, so that the material-supporting platform 14 lifts the profile on the chain conveyor platform 1. When the piston rod of the material-supporting hydraulic cylinder 18 retracts, it can drive the material-supporting frame 15 to move downward through the parallel four-bar linkage structure until the material-supporting platform 14 is below the chain conveyor platform 1, so that the profile on the material-supporting platform 14 falls back onto the chain conveyor platform 1.

[0032] In this embodiment, the structure of the material support platform 14 of the material support frame 15 includes: a fixed support platform 19 and a movable support platform 20. The fixed support platform 19 is fixedly installed on the top of the material support frame 15, and the movable support platform 20 is slidably disposed on the fixed support platform 19. A positioning and locking mechanism is provided between the movable support platform 20 and the fixed support platform 19. The structure of the positioning and locking mechanism includes: elongated waist holes 21 are respectively provided on both sides of the fixed support platform 19, and guide bolts 22 are respectively provided on both sides of the movable support platform 20. The guide bolts 22 on both sides of the movable support platform 20 correspond one-to-one with the elongated waist holes 21 on both sides of the fixed support platform 19. The guide bolts 22 on both sides of the movable support platform 20 extend from the fixed support platform. A locking nut 23 extends from and is threaded into the corresponding elongated waist hole 21 of the fixed support platform 19; a baffle part 24 extends integrally to the rear end of the fixed support platform 19. When the support platform 14 moves up to lift the profile on the chain conveyor platform 1, the lower edge of the baffle part 24 will be lower than the upper edge of the profile on the chain conveyor platform 1. In this way, when the support platform 14 lifts the profile on the chain conveyor platform 1 located directly above the support platform 14, the baffle part 24 at the rear end of the support platform 14 will block the profile behind the support platform 14, preventing the profile behind the support platform 14 from moving forward into the area below the support platform 14 which is in a raised state, thus further improving the operational stability of the equipment.

[0033] In practical applications, the distance between the movable support platform 20 and the baffle plate 9 in the flipped-up blocking state is the profile stacking width. The profile stacking width can be adjusted by adjusting the distance between the movable support platform 20 and the baffle plate 9 in the swing blocking state to adapt to the stacking width requirements of different specifications of profiles. When it is necessary to adjust the profile stacking width, simply loosen the locking nuts 23 on the support platform 14. At this time, the movable support platform 20 can move along the fixed support platform 19. The profile stacking width can be adjusted by adjusting the distance between the movable support platform 20 and the baffle plate 9 in the flipped-up blocking state. After the movable support platform 20 is adjusted to the correct position, tighten the locking nuts 23. The operation is convenient.

[0034] In this embodiment, as Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12As shown, the structure of the profile stacking device 4 includes: a support 25 arranged below the chain conveyor platform 1; a swing frame 26 mounted on the support 25, the front end of the swing frame 26 being the driving end and the rear end being the hinged end; the hinged end of the swing frame 26 being hinged to the support 25 via a connecting shaft 27; a front-to-back sliding rail 28 arranged in the swing frame 26; a translation frame 29 slidably mounted on the sliding rail 28; a transfer platform 30 mounted at the front end of the translation frame 29; the transfer platform 30 consisting of several javelin-type transfer rods arranged side by side with their tips pointing forward; a stop block 31 protruding from the transfer platform 30; and a mechanism between the translation frame 29 and the swing frame 26 for driving the translation frame 29 relative to the swing frame 26. A translation drive mechanism that moves forward or backward: when the translation frame 29 moves forward, it can simultaneously drive the transfer platform 30 to move forward from the picking station to the stacking station; when the translation frame 29 moves backward, it can simultaneously drive the transfer platform 30 to move backward from the stacking station to the picking station; a swing drive mechanism is provided between the drive end of the swing frame 26 and the bracket 25 to drive the swing frame 26 to rotate upward or downward. When the transfer platform 30 is located at the picking station, the swing frame 26 rotates upward, which can simultaneously drive the transfer platform 30 to lift up the profile located at the picking station on the chain conveyor platform 1; when the transfer platform 30 is located at the stacking station, the swing frame 26 rotates downward, which can place the lifted profile on the stacking lifting trolley 7 that extends into the stacking station.

[0035] In this embodiment, the translation drive mechanism includes: a first rack 32 with a forward and backward orientation is installed at the bottom of the translation frame 29; a first translation motor 33 is installed in the swing frame 26; a first gear 34 meshing with the first rack 32 is installed on the output shaft of the first translation motor 33; the first translation motor 33, through the cooperation of the first gear 34 and the first rack 32, synchronously drives the translation frame 29 to move forward or backward relative to the swing frame 26; the swing drive mechanism includes: a support roller 35 is supported at the bottom of the drive end of the swing frame 26; a swing motor 36 is installed on the bracket 25; an eccentric cam 37 corresponding to the support roller 35 is fitted on the output shaft of the swing motor 36; under its own weight, the support roller 35 of the swing frame 26 always presses against the eccentric cam 37; the swing motor 36 drives the eccentric cam 37 to rotate, thereby driving the swing frame 26 to rotate upward or downward; the above-mentioned translation drive mechanism and swing drive mechanism have simple structures and are easy to install and maintain.

[0036] In this embodiment, a profile pressing mechanism 38 is also included, which is arranged at the palletizing station. The profile pressing mechanism 38 includes a pressing frame 39, a pressing plate 40 on the pressing frame 39, the middle part of the pressing plate 40 being hinged to the upper part of the pressing frame 39 by a pin 41, a pressing hydraulic cylinder 42 on the pressing frame 39, the cylinder body of the pressing hydraulic cylinder 42 being hinged to the pressing frame 39, and the piston rod of the pressing hydraulic cylinder 42 being hinged to the lower end of the pressing plate 40. When the piston rod of the pressing hydraulic cylinder 42 extends, it can drive the pressing plate 40 to rotate downward around the pin 41 to press it downward as it moves to the palletizing station with the material transfer platform 30. When the piston rod of the hydraulic cylinder 42 retracts, it can drive the pressure plate 40 to rotate upward around the pin 41 to leave the profile located at the stacking station. A limit plate 43 is fixed on the pressure frame 39. An arc-shaped limit hole 44 concentric with the pin 41 is provided on the limit plate 43. A guide shaft 45 that extends into and can move along the arc-shaped limit hole 44 is installed at the lower end of the pressure plate 40. In this way, during the process of the pressure plate 40 pressing down the profile, the pressure plate 40 restricts the upward and downward movement of the pressure plate 40 through the limiting cooperation between the guide shaft 45 and the arc-shaped limit hole 44, so as to avoid the pressure plate 40 pressing down the profile excessively.

[0037] In this embodiment, the transfer platform 30 is composed of several javelin-type transfer rods arranged side by side with their tips pointing forward. In this way, when the transfer platform 30 moves the profile to the stacking lifting trolley 8 that extends into the stacking station, the drop difference of the profile from the transfer platform 30 to the stacking lifting trolley 8 can be reduced during the process of the transfer platform 30 pulling the profile away. This avoids the profile from scattering due to excessive drop and improves the stability of the equipment.

[0038] The profile pressing mechanism 38 is used in conjunction with the transfer platform 30 when the profile needs to be removed. After the transfer platform 30 moves the profile to the stacking lifting trolley 7 that extends into the stacking station and is about to remove the profile, the piston rod of the pressing hydraulic cylinder 42 of the profile pressing mechanism 38 extends out, driving the pressing plate 40 to rotate downward around the pin 41 until the pressing plate 40 presses down against the profile on the transfer platform 30. While keeping the pressing plate 40 pressing against the profile, the transfer platform 30 removes the profile, thereby preventing the profile from scattering during the removal process of the transfer platform 30 and further improving the stability of the equipment.

[0039] In this embodiment, as Figure 13 , Figure 14 , Figure 15 , Figure 16As shown, the structure of the palletizing lifting trolley 7 includes: a trolley support 46, a lifting seat 47 mounted on the trolley support 46, a translating arm 48 mounted on the lifting seat 47, and a carrying plate 49 for supporting profiles mounted on the translating arm 48. The carrying plane 50 of the carrying plate 49 is sloping with a lower front and higher back, which allows the carrying plate to support the profiles more stably, preventing the profiles from slipping off the carrying plate and improving the stability of the equipment. The carrying plate 49 is supported on the translating arm 48 by springs 51, thus supporting the material... The plate 5 provides cushioning when receiving profiles, better protecting them and preventing damage caused by the lack of cushioning when receiving profiles. A backrest plate 52 is provided in front of the carrying plate 49 for the profiles on it to rest against. The translation arm 48, driven by the front and rear translation components, can move back and forth relative to the lifting seat 47, allowing the carrying plate 49 to be moved into the stacking station to support the profiles. The structure of the front and rear translation components includes a second rack 53 installed at the bottom of the translation arm 48. Arranged in a front-to-back direction, the lifting seat 47 is equipped with a second translation motor 54, and a second gear 55 meshing with the second rack 53 is mounted on the output shaft of the second translation motor 54. Driven by the lifting assembly, the lifting seat 47 can move up and down relative to the trolley support 46, allowing the carrying plate 49 to transfer the received profile to the output roller conveyor 6. The lifting assembly includes a vertical slide rail 56 on the trolley support 46, and the lifting seat 47 is slidably mounted on the vertical slide rail 56. The upper end of the bracket 46 supports an upper sprocket 58 driven by a motor 57, and the lower end of the trolley bracket 46 supports a lower sprocket 59. A chain 60 is wound between the upper sprocket 58 and the lower sprocket 59. One side of the chain 60 is fixed to the lifting seat 47. When the motor 57 drives the chain 60 to rotate through the upper sprocket 58 and the lower sprocket 59, it can synchronously drive the lifting seat 47 to move up or down relative to the trolley bracket 46 along the vertical slide rail 56. The above-mentioned palletizing lifting trolley has a simple structure, is easy to use, and is easy to install and maintain.

[0040] In this embodiment, a conveyor surface width adjustment mechanism is provided at the output roller conveyor 6 to make the conveyor surface width of the output roller conveyor 6 consistent with the stacking width of the profiles transferred by the palletizing lifting trolley. The structure of the conveyor surface width adjustment mechanism includes: an adjustment bracket 61 disposed at the gap between the conveyor rollers of the output roller conveyor 6; a movable baffle 62 and a fixed baffle 63 are provided on the adjustment bracket 61; the movable baffle 62 and the fixed baffle 63 are arranged on the front and rear sides of the output roller conveyor 6; and the fixed baffle 63 is fixed on the adjustment bracket 61. The adjusting bracket 61 is provided with a front-to-back track 64, and the movable baffle 62 is slidably disposed on the track 64. A hydraulic cylinder 65 is provided at the lower part of the adjusting bracket 61. The cylinder body of the hydraulic cylinder 65 is hinged to the adjusting bracket 61, the piston rod of the hydraulic cylinder 65 is hinged to one end of the connecting plate 66, the middle part of the connecting plate 66 is hinged to the adjusting bracket 61, the other end of the connecting plate 66 is hinged to one end of the connecting rod 67, and the other end of the connecting rod 67 is hinged to the lower end of the fixed block 68. The fixed block 68 is fixedly installed at the bottom of the movable baffle 62.

[0041] In this practical application, the distance between the movable baffle 62 and the fixed baffle 63 determines the width of the roller conveyor surface. Therefore, by simply adjusting the distance between the movable baffle 62 and the fixed baffle 63, the width of the roller conveyor surface can be adjusted synchronously. When it is necessary to increase the width of the roller conveyor surface, the piston rod of the hydraulic cylinder 65 extends, and the hydraulic cylinder 65 drives the movable baffle 62 to move away from the fixed baffle 63 along the track 64 through the connecting plate 66 and the connecting rod 67, thereby increasing the width of the roller conveyor surface. When it is necessary to decrease the width of the roller conveyor surface, the piston rod of the hydraulic cylinder 65 retracts, and the hydraulic cylinder 65 then drives the movable baffle 62 to move closer to the fixed baffle 63 through the connecting plate 66 and the connecting rod 67, thereby reducing the width of the roller conveyor surface.

[0042] This invention is applicable to the stacking of profiles of various specifications. The stacking process of round bars, small-specification flat bars and large-specification flat bars is described in detail below.

[0043] (1) The stacking process of round bars is as follows:

[0044] When stacking round bars, the profile collection and separation device 2 does not operate. The baffle plate 9 of the baffle mechanism in the profile collection and separation device is always below the chain conveyor platform 1, and the material support platform 14 in the material support mechanism is also always below the chain conveyor platform 1. The profile stacking device 4 does not operate. The material transfer platform 30 in the profile stacking device 4 is always below the chain conveyor platform 1, and the baffle assembly 3 is always in a state of not blocking the release of profiles.

[0045] Before operation, the palletizing lifting trolley 7 moves the loading plate 49 to the palletizing station to await material reception. Then, the chain conveyor platform 1 transports the round bars forward. The round bars output from the chain conveyor platform 1 slide down the transition roller group 5 under their own weight onto the loading plate 49 of the palletizing lifting trolley 7 at the palletizing station. As the round bars pass through the transition roller group 5, the sensors at the transition roller group 5 record the number of round bars entering the palletizing station in real time. When the number of round bars entering the palletizing station reaches the required palletizing width, the chain conveyor platform stops transporting the round bars. The round bars then enter the palletizing station... After being positioned, the round bars will be arranged on the material carrier plate 49 of the palletizing lifting trolley 7. After the palletizing lifting trolley 7 finishes receiving the material, it moves the material carrier plate 49 downward to below the output roller conveyor 6, so that the round bars received on the material carrier plate 49 fall downward onto the output roller conveyor 6. Then the output roller conveyor 6 outputs the received round bars to the next stage. Next, the palletizing lifting trolley 7 moves the material carrier plate 49 out of the output roller conveyor 6, and then moves the material carrier plate 49 up to one side of the palletizing station. Then it moves the material carrier plate 49 back into the palletizing station to wait for the next batch of round bars.

[0046] (2) The stacking process for small-diameter flat steel is as follows:

[0047] When stacking small-sized flat steel, a flat-laying stacking method is adopted. During the stacking process, the stop block assembly 3 is always in the state of blocking the profile from being lifted. In the initial state, the material support platform 8 is located below the chain conveyor platform 2, the stop plate 3 is in the swing blocking state of flipping up the chain conveyor platform 2, and the material transfer platform 30 is located below the chain conveyor platform 1.

[0048] Before starting work, adjust the distance between the movable support platform 82 and the baffle plate 3 in the swing blocking state according to the stacking width requirements of the small-specification flat steel, so that the distance between the movable support platform 82 and the baffle plate 3 in the swing blocking state is consistent with the stacking width requirements of the small-specification flat steel; at the same time, the stacking lifting trolley 7 first moves the loading plate 49 to the stacking station to wait for receiving the material.

[0049] During operation, the chain conveyor platform 1 continuously conveys the flat steel bars of small specifications forward. The flat steel bars of small specifications will be blocked by the baffle plate 9 as they are conveyed forward. As the chain conveyor platform 1 continues to convey the flat steel bars of small specifications forward, the flat steel bars of small specifications will be closely arranged together. When the chain conveyor platform 1 between the baffle plate 9 and the input end of the chain conveyor platform 1 is full of flat steel bars of small specifications, the chain conveyor platform 1 stops operating.

[0050] Then, the piston rod of the material-supporting hydraulic cylinder 18 extends, and the material-supporting frame 15 moves upward through the parallel four-bar linkage structure until the material-supporting platform 14 is above the chain conveyor platform 1, so that the material-supporting platform 14 lifts the profile on the chain conveyor platform 1 that is directly above it; when the material-supporting platform 14 lifts the profile on the chain conveyor platform 1 that is directly above it, the material-stopping part 24 at the rear end of the material-supporting platform 14 will block the profile behind the material-supporting platform 14 to prevent the profile behind the material-supporting platform 14 from moving forward into the area below the material-supporting platform 14 that is currently in the raised state;

[0051] At this point, the small-sized flat steel that needs to be grouped and separated is located between the movable support platform 20 and the baffle plate 9;

[0052] Next, the piston rod of the material-stopping hydraulic cylinder 18 is retracted, and the material-stopping plate 9 is driven to rotate downward around the rotating shaft 13 and flip down to the bottom of the chain conveyor platform 1 through the L-shaped material-stopping connecting plate 11 and the material-stopping connecting rod 12, so that the material-stopping plate 9 releases the small-specification flat steel on the chain conveyor platform 1.

[0053] The material support platform 14 remains in the raised state, and the chain conveyor platform 1 is started. The chain conveyor platform 1 outputs the grouped and separated small-sized flat steel forward to the stop block assembly 3. At this time, the grouped and separated small-sized flat steel is blocked by the stop block assembly 3 and stops at the material picking station.

[0054] Next, the piston rod of the material blocking hydraulic cylinder 10 is extended, and the material blocking plate 9 is driven to rotate upward around the rotating shaft 13 through the L-shaped material blocking connecting plate 11 and the material blocking connecting rod 23 to flip out the chain conveyor platform 1 to block the small-sized flat steel on the chain conveyor platform 1 again. Then, the piston rod of the material supporting hydraulic cylinder 18 is retracted, and the material supporting frame 15 is driven to move downward through the parallel four-bar linkage structure until the material supporting platform 14 is located below the chain conveyor platform 1 again, so that the small-sized flat steel on the material supporting platform 14 falls back onto the chain conveyor platform 1.

[0055] Repeat the above operations to continuously complete the automatic assembly, grouping, and separation of small-diameter flat steel.

[0056] When the small-sized flat steel that has been grouped and separated is blocked by the stop block assembly 3 and stops at the picking station, the swing motor 36 drives the eccentric cam 37 to rotate, thereby driving the swing frame 26 to rotate upward, and simultaneously driving the translation frame 29 and the transfer platform 30 to rotate upward, so that the transfer platform 30 is lifted up to support the small-sized flat steel located at the picking station on the chain conveyor platform 1.

[0057] Then, the first translation motor 33 is made to cooperate with the first gear 34 and the first rack 32 to synchronously drive the translation frame 29 to move forward relative to the swing frame 26, and synchronously drive the material transfer platform 30 to move forward from the material picking station to the stacking station.

[0058] Next, the oscillating motor 36 drives the eccentric cam 37 to continue rotating, causing the oscillating frame 26 to rotate downwards. Simultaneously, this drives the translation frame 29 and the transfer platform 30 to rotate downwards, allowing the transfer platform 30 to place the small-sized flat steel it supports onto the loading plate 49 of the palletizing lifting trolley 7, which is currently located at the palletizing station. Before the transfer platform 30 is ready to move backwards and remove the small-sized flat steel, the piston rod of the pressing hydraulic cylinder 42 of the profile pressing mechanism 38 extends, causing the pressing plate 401 to rotate downwards around the pin 41 until the pressing plate 40 presses down against the small-sized flat steel on the transfer platform 30. While maintaining the pressing plate 40 pressing against the small-sized flat steel, the transfer platform 30... The first translation motor 33, through the cooperation of the first gear 34 and the first rack 32, synchronously drives the translation frame 29 to move backward relative to the swing frame 26, and synchronously drives the material transfer platform 30 to move backward from the stacking station to the material picking station, thereby removing the small-sized flat steel from the material transfer platform 30. At this time, the small-sized flat steel will fall onto the loading plate 49 of the stacking lifting trolley. After the material transfer platform 30 removes the small-sized flat steel, the piston rod of the pressure hydraulic cylinder 42 retracts, driving the pressure plate 40 to rotate upward around the pin 41 to leave the small-sized flat steel located at the stacking station; thus completing the stacking of a layer of small-sized flat steel on the loading plate 49 of the stacking lifting trolley 7.

[0059] After each layer of small-sized flat steel is stacked, the stacking lifting trolley 7 drives the material carrier plate 49 to descend by a corresponding flat steel thickness.

[0060] Repeat the above actions until the small-sized flat steel bars of the specified stack height are stacked on the material plate 49 of the stacking lifting trolley 7; the stacking lifting trolley 7 moves the material plate 49 downward to below the output roller conveyor 6, so that the small-sized flat steel bars held on the material plate 49 fall downward onto the output roller conveyor 6, and then the output roller conveyor 6 outputs the small-sized flat steel bars to the next stage; then the stacking lifting trolley 7 moves the material plate 49 out of the output roller conveyor 6, and then moves the material plate 49 up to one side of the stacking station, and then moves the material plate 49 back into the stacking station to wait for the next batch of small-sized flat steel bars.

[0061] (3) The stacking process for large-specification flat steel is as follows:

[0062] When stacking large-specification flat steel, a vertical parallel stacking method is adopted. During the stacking process, the profile stacking device 4 does not move. The material transfer platform 30 in the profile stacking device 4 is always below the chain conveyor platform 1, and the stop block assembly 3 is always in a state of not blocking the release of profiles.

[0063] In the initial state, the material support platform 8 is located below the chain conveyor platform 2, and the baffle plate 3 is in a swinging blocking state that flips upward out of the chain conveyor platform 2;

[0064] Before starting work, adjust the distance between the movable support platform 82 and the baffle plate 3 in the swing blocking state so that the distance between the movable support platform 82 and the baffle plate 3 in the swing blocking state is exactly the same as the width of a large-specification flat steel bar; at the same time, the stacking lifting trolley 7 first moves the loading plate 49 to the stacking station to wait for receiving the material. At this time, the distance between the back plate 52 in the stacking lifting trolley 7 and the transition roller 5 is just enough to accommodate a vertical large-specification flat steel bar.

[0065] During operation, the chain conveyor platform 1 continuously conveys large-sized flat steel bars that are laid flat forward. The large-sized flat steel bars that are conveyed forward will be blocked by the baffle plate 9. As the chain conveyor platform 1 continues to convey large-sized flat steel bars forward, the large-sized flat steel bars will be arranged closely together. When the chain conveyor platform 1 between the baffle plate 9 and the input end of the chain conveyor platform 1 is full of large-sized flat steel bars, the operation of the chain conveyor platform 1 will stop.

[0066] Then, the piston rod of the material-supporting hydraulic cylinder 18 extends, and the material-supporting frame 15 moves upward through the parallel four-bar linkage structure until the material-supporting platform 14 is above the chain conveyor platform 1, so that the material-supporting platform 14 lifts the profile on the chain conveyor platform 1 directly above it; when the material-supporting platform 14 lifts the large-specification flat steel on the chain conveyor platform 1 directly above it, the material-blocking part 24 at the rear end of the material-supporting platform 14 will block the large-specification flat steel behind the material-supporting platform 14 to prevent the large-specification flat steel behind the material-supporting platform 14 from moving forward into the area below the material-supporting platform 14 which is in the raised state at this time;

[0067] At this time, the space between the movable support platform 20 and the baffle plate 9 can just accommodate a large-sized flat steel bar;

[0068] Next, the piston rod of the material-blocking hydraulic cylinder 18 is retracted, and the material-blocking plate 9 is driven to rotate downward around the rotating shaft 13 and flip down to the bottom of the chain conveyor platform 1 through the L-shaped material-blocking connecting plate 11 and the material-blocking connecting rod 12, so that the material-blocking plate 9 releases the large-specification flat steel on the chain conveyor platform 1.

[0069] The material support platform 14 remains in the raised state, and the chain conveyor platform 1 is started. The chain conveyor platform 1 outputs the large-size flat steel forward to the transition roller group 5. At this time, the large-size flat steel will slide down along the transition roller group 5 under its own weight and fall between the backrest plate 52 and the transition roller track 5. Since the distance between the backrest plate 52 and the transition roller track 5 is just enough to accommodate a vertical large-size flat steel, after the large-size flat steel falls onto the material carrier plate 49, the large-size flat steel will stand upright against the backrest plate 52.

[0070] After each large-sized flat steel bar is stacked vertically, the stacking lifting trolley 7 moves the material carrier plate 49 forward by a corresponding flat steel thickness.

[0071] Repeat the above actions until a layer of vertically placed large-specification flat steel is stacked on the material carrier plate 49 of the stacking lifting trolley 7; the stacking lifting trolley 7 moves the material carrier plate 49 downward to below the output roller conveyor 6, so that the large-specification flat steel on the material carrier plate 49 falls downward onto the output roller conveyor 6, and then the output roller conveyor 6 outputs the large-specification flat steel to the next stage; then the stacking lifting trolley 7 moves the material carrier plate 49 out of the output roller conveyor 6, and then moves the material carrier plate 49 up to one side of the stacking station, and then moves the material carrier plate 49 back into the stacking station to wait for the next batch of large-specification flat steel.

[0072] The advantages of this invention are: it can be applied to the automatic palletizing of various specifications of profiles, has a wide range of applications, can automatically complete the palletizing of various profiles, greatly reduces the labor intensity of workers, improves work efficiency, and has high safety in use.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any modifications or equivalent changes made based on the technical essence of the present invention shall still fall within the scope of protection claimed by the present invention.

Claims

1. A multi-profile composite palletizing production line, characterized in that: This includes a chain conveyor platform for forward conveying profiles. A profile grouping and separating device is installed at the input end of the chain conveyor platform to group and separate profiles according to a specified stacking width. The output end of the chain conveyor platform is located at the picking station, and a stop assembly is installed at the output end. The stop assembly can block the profiles to stop them at the picking station or allow them to pass. A profile stacking device is installed at the picking station to handle the profiles blocked by the stop assembly. Profiles blocked by the components and stopped at the picking station are moved forward to the stacking station; a transition roller group is set in front of the chain conveyor platform, which can guide and transport the profiles released by the blocking components to the stacking station; an output roller conveyor for outputting profiles is set below the stacking station, and a stacking lifting trolley is arranged at the stacking station, which can extend into the stacking station to receive the profiles transferred and transported by the profile stacking device or the transition roller group and transfer the received profiles to the output roller conveyor; The palletizing lifting trolley structure includes: a trolley bracket, a lifting seat mounted on the trolley bracket, a translating arm mounted on the lifting seat, and a carrier plate for supporting profiles mounted on the translating arm. The carrier plate has a sloping surface that is lower in the front and higher in the back. The carrier plate is supported on the translating arm by springs. A backrest plate is located in front of the carrier plate for the profiles on the carrier plate to rest against. The translating arm can move back and forth relative to the lifting seat under the drive of the front and rear translation components, so that the carrier plate can move into the palletizing station to support the profiles. The structure of the front and rear translation components includes: a second rack mounted at the bottom of the translating arm, the second rack being arranged in a front-to-back direction; a second translation motor mounted on the lifting seat; and a second translation motor. The output shaft of the two translation motors is equipped with a second gear that meshes with the second rack; the lifting seat can move up and down relative to the trolley support under the drive of the lifting assembly so that the material carrier can transfer the received profile to the output roller conveyor. The structure of the lifting assembly includes: a vertical slide rail is provided on the trolley support, the lifting seat is slidably mounted on the vertical slide rail, an upper sprocket driven by the motor is supported at the upper end of the trolley support, a lower sprocket is supported at the lower end of the trolley support, a chain is wound between the upper sprocket and the lower sprocket, one side of the chain is fixed to the lifting seat, when the motor drives the chain to rotate through the upper sprocket and the lower sprocket, it can synchronously drive the lifting seat to move up or down relative to the trolley support along the vertical slide rail.

2. The multi-profile composite palletizing production line according to claim 1, characterized in that: The profile collection and separation device includes a material support mechanism and a material blocking mechanism. The material support mechanism and the material blocking mechanism are arranged sequentially and at intervals on the frame of the chain conveyor platform along the forward conveying direction of the profiles. The distance between the material support mechanism and the material blocking mechanism is the width of the profile stack. The material blocking mechanism includes a material blocking plate and a material blocking hydraulic cylinder. The cylinder body of the material blocking hydraulic cylinder is hinged to the frame, and the piston rod of the material blocking hydraulic cylinder is hinged to one end of an L-shaped material blocking connecting plate. The middle part of the L-shaped material blocking connecting plate is hinged to the frame. The other end of the plate is hinged to one end of the baffle rod, and the other end of the baffle rod is hinged to the lower end of the baffle plate. The middle part of the baffle plate is hinged to the frame via a pivot. When the piston rod of the baffle hydraulic cylinder extends, it can drive the baffle plate to rotate upward around the axis and flip it out of the chain conveyor platform to block the profiles on the chain conveyor platform through the L-shaped baffle plate and the baffle rod. When the piston rod of the baffle hydraulic cylinder retracts, it can drive the baffle plate to rotate downward around the axis and flip it under the chain conveyor platform to release the profiles on the chain conveyor platform. Profile; the structure of the material support mechanism includes: a material support frame with a material support platform at the top, an upper connecting plate and a lower L-shaped material support connecting plate arranged on one side of the material support frame, one end of the upper connecting plate being hinged to the machine frame, the other end of the upper connecting plate being hinged to the upper part of the material support frame, the middle part of the lower L-shaped material support connecting plate being hinged to the machine frame, and one end of the lower L-shaped material support connecting plate being hinged to the lower part of the material support frame, the upper connecting plate, the lower L-shaped material support connecting plate, the machine frame, and the material support frame together forming a parallel four-bar linkage structure, and a material support hydraulic cylinder is also arranged on the machine frame, the material support hydraulic cylinder... The cylinder body is hinged to the frame, and the piston rod of the material-supporting hydraulic cylinder is hinged to the other end of the lower L-shaped material-supporting connecting plate. When the piston rod of the material-supporting hydraulic cylinder extends, it can drive the material-supporting frame to move upward through the parallel four-bar linkage structure until the material-supporting platform is above the chain conveyor platform, so that the material-supporting platform lifts the profile on the chain conveyor platform. When the piston rod of the material-supporting hydraulic cylinder retracts, it can drive the material-supporting frame to move downward through the parallel four-bar linkage structure until the material-supporting platform is below the chain conveyor platform, so that the profile on the material-supporting platform falls back onto the chain conveyor platform.

3. The multi-profile composite palletizing production line according to claim 2, characterized in that: The material support platform of the material support frame includes a fixed support platform and a movable support platform. The fixed support platform is fixedly installed on the top of the material support frame, and the movable support platform is slidably mounted on the fixed support platform. A positioning and locking mechanism is provided between the movable support platform and the fixed support platform. The positioning and locking mechanism includes: elongated slots on both sides of the fixed support platform and guide bolts on both sides of the movable support platform. The guide bolts on both sides of the movable support platform correspond one-to-one with the elongated slots on both sides of the fixed support platform. The guide bolts on both sides of the movable support platform extend from the corresponding elongated slots on the fixed support platform and are threaded with locking nuts. A material stop extends integrally from the rear end of the fixed support platform. When the material support platform moves up to lift the profile on the chain conveyor platform, the lower edge of the material stop will be lower than the upper edge of the profile on the chain conveyor platform.

4. The multi-profile composite palletizing production line according to claim 1, characterized in that: The profile stacking device includes: a support frame arranged below the chain conveyor platform; a swing frame mounted on the support frame, with a drive end at the front and a hinge end at the rear; the hinge end of the swing frame is hinged to the support frame via a connecting shaft; a slide rail running forward and backward is installed in the swing frame; a translation frame slides on the slide rail; a transfer platform is installed at the front end of the translation frame, the transfer platform consisting of several javelin-shaped transfer rods arranged side by side with their tips pointing forward; a stop block protruding from the transfer platform is installed on the transfer platform; and a translation drive is installed between the translation frame and the swing frame to drive the translation frame to move forward or backward relative to the swing frame. The moving mechanism can simultaneously drive the material transfer platform from the material picking station to the stacking station when the translation frame moves forward; and can simultaneously drive the material transfer platform from the stacking station to the material picking station when the translation frame moves backward. A swing drive mechanism is provided between the drive end of the swing frame and the support to drive the swing frame to rotate up or down. When the material transfer platform is located at the material picking station, the upward rotation of the swing frame can simultaneously drive the material transfer platform to lift the profile located at the material picking station on the chain conveyor platform. When the material transfer platform is located at the stacking station, the downward rotation of the swing frame can place the lifted profile on the stacking lifting trolley that extends into the stacking station.

5. A multi-profile composite palletizing production line according to claim 4, characterized in that: The translation drive mechanism includes: a first rack with a forward and backward orientation installed at the bottom of the translation frame; a first translation motor installed in the swing frame; a first gear meshing with the first rack installed on the output shaft of the first translation motor; the first translation motor drives the translation frame to move forward or backward relative to the swing frame synchronously through the first gear and the first rack. The swing drive mechanism includes: a support roller supported at the bottom of the drive end of the swing frame; a swing motor installed on the support; an eccentric cam corresponding to the support roller mounted on the output shaft of the swing motor; the support roller of the swing frame always presses against the eccentric cam under its own weight; the swing motor drives the eccentric cam to rotate, thereby driving the swing frame to rotate upward or downward.

6. A multi-profile composite palletizing production line according to claim 4, characterized in that: It also includes a profile pressing mechanism arranged at the stacking station. The profile pressing mechanism includes: a pressing frame, a pressing plate on the pressing frame, the middle part of the pressing plate being hinged to the upper part of the pressing frame by a pin, a pressing hydraulic cylinder on the pressing frame, the cylinder body of the pressing hydraulic cylinder being hinged to the pressing frame, and the piston rod of the pressing hydraulic cylinder being hinged to the lower end of the pressing plate. When the piston rod of the pressing hydraulic cylinder extends, it can drive the pressing plate to rotate downward around the pin axis to press the profile that has been moved to the stacking station by the transfer platform. When the piston rod of the pressing hydraulic cylinder retracts, it can drive the pressing plate to rotate upward around the pin axis to move away from the profile located at the stacking station. A limit plate is fixed on the pressing frame, and an arc-shaped limit hole concentric with the pin axis is provided on the limit plate. A guide shaft that extends into and can move along the arc-shaped limit hole is installed at the lower end of the pressing plate.

7. A multi-profile composite palletizing production line according to claim 1, characterized in that: A conveyor conveyor width adjustment mechanism is provided at the output roller conveyor to make the width of the conveyor conveyor surface consistent with the stacking width of the profiles transferred by the palletizing lifting trolley. The structure of the conveyor conveyor width adjustment mechanism includes: an adjustment bracket set at the gap between the conveyor rollers of the output roller conveyor; a movable baffle and a fixed baffle are set on the adjustment bracket; the movable baffle and the fixed baffle are arranged on the front and rear sides of the output roller conveyor; the fixed baffle is fixed on the adjustment bracket; a front-to-back track is set on the adjustment bracket; the movable baffle is slidably set on the track; a hydraulic cylinder is set at the lower part of the adjustment bracket; the cylinder body of the hydraulic cylinder is hinged to the adjustment bracket; the piston rod of the hydraulic cylinder is hinged to one end of a connecting plate; the middle part of the connecting plate is hinged to the adjustment bracket; the other end of the connecting plate is hinged to one end of a connecting rod; the other end of the connecting rod is hinged to the lower end of a fixed block; and the fixed block is fixedly installed at the bottom of the movable baffle.

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