Copper tube annealing system

Abstract

The present invention discloses a copper tube annealing system, comprising an annealing furnace, a tray for stacking copper tubes, and conveyor rollers for conveying the trays. The conveyor rollers pass through the annealing furnace to transport the trays in and out of the annealing furnace. The trays include a bottom plate and side plates. A torsion spring is provided between the bottom plate and the side plates to apply a torsional force to the side plates to cause the side plates to extend upward. The annealing furnace includes a furnace body, a feed door provided on one side of the furnace body, a first switch mechanism for opening and closing the feed door, a discharge door provided on the other side of the furnace body, and a second switch mechanism for opening and closing the discharge door. The conveyor rollers pass through the feed door and the discharge door. The furnace body is provided with an expansion mechanism for expanding the side plates to a horizontal position. When the side plates are horizontal, the upper sides of the side plates are flush with the upper side of the bottom plate, so that the copper tubes are automatically flattened under the action of gravity. The present invention provides a copper tube annealing system. After the stacked copper tubes enter the annealing furnace, the copper tubes can be flattened into a layer to ensure that the annealing degree of the copper tubes is similar.

Description

Technical Field

[0001] The present invention relates to the technical field of copper tube annealing, in particular to a copper tube annealing system. Background Art

[0002] After copper tubes are prepared, they are stacked on a tray for easy handling. Annealing is then required to improve the quality of the tubes. Existing copper tube annealing equipment includes an annealing furnace and a furnace door located on one side of the furnace. During annealing, the copper tubes are stacked on a tray and then placed in the annealing furnace. After the furnace door is closed, the copper tubes are slowly heated and then slowly cooled. Once the temperature has cooled, the furnace door is opened and the tray is removed.

[0003] When annealing copper tubes in existing annealing devices, the copper tubes are stacked on a tray, which is not conducive to the heating and heat dissipation of the inner copper tubes. The annealing degrees of the inner and outer copper tubes are different, thus affecting the stability of the copper tube quality. Summary of the Invention

[0004] In order to solve the problem of existing copper tube annealing devices that copper tubes are stacked together during annealing, resulting in different annealing degrees between the copper tubes, the present invention proposes a copper tube annealing system. After the stacked copper tubes enter the annealing furnace, the copper tubes can be flattened into a layer to make the annealing degrees of the copper tubes similar.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A copper tube annealing system comprises an annealing furnace, a tray for stacking copper tubes, and a conveying roller for conveying the tray. The conveying roller passes through the annealing furnace to convey the tray in or out of the annealing furnace. The tray comprises a bottom plate and side plates rotatably connected to the front and rear sides of the bottom plate. A torsion spring is provided between the bottom plate and the side plates, which can apply torsion force to the side plates to extend the side plates upward. The annealing furnace comprises a furnace body, a feed door provided on one side of the furnace body, a first switch mechanism for opening and closing the feed door, a discharge door provided on the other side of the furnace body, and a second switch mechanism for opening and closing the discharge door. The conveying roller passes through the feed door and the discharge door. An unfolding mechanism is provided in the furnace body that can unfold the side plates to a horizontal level. When the side plates are horizontal, the upper sides of the side plates are flush with the upper side of the bottom plate, so that the copper tubes automatically roll onto the side plates under the action of gravity and are flattened into a layer.

[0007] In the present application, after the conveyor roller sends the tray and the stacked copper tubes into the annealing furnace, the unfolding mechanism unfolds the side plates to a horizontal level. The copper tubes automatically roll onto the side plates under the action of gravity and are flattened into a layer, so that when the annealing furnace anneals the copper tubes, the annealing degree between the copper tubes is close; after the annealing is completed, the torsion spring can make the side plates go upward again, the volume of the tray is reduced, and the copper tubes are stacked in the tray again. After the material is discharged, it is convenient to move the tray away.

[0008] Furthermore, ear plates extend from the front and rear sides of the base plate, the side plates are fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the ear plates, the rotating shaft is fixedly connected to a wire wheel, a pull wire is wound around the wire wheel, a mounting groove is provided on the lower side of the base plate, a connecting block is provided in the mounting groove, a wire path is provided in the base plate, and the pull wire is connected to the connecting block through the wire path; the unfolding mechanism includes a support plate arranged in the furnace body and on the lower side of the conveying roller, a first driving cylinder that can drive the support plate to move up and down, and an electromagnet fixedly connected to the upper side of the support plate and capable of adsorbing the connecting block.

[0009] Through the above arrangement, the side panels are rotatably connected through the rotating shaft, the ear plate and the bottom plate. When the electromagnet adsorbs the connecting block, the first drive cylinder drives the electromagnet downward to unfold the side panels through the connecting block, the pull wire, the pulley and the rotating shaft. When the electromagnet releases the connecting block, the side panels automatically rebound under the action of the torsion spring.

[0010] Furthermore, a side of the side plate away from the bottom plate is fixedly connected to a limit plate. When the side plate is horizontal, the limit plate extends upward to prevent the copper tube from rolling off the edge of the side plate.

[0011] Furthermore, a pressing plate for pressing down the copper tube to help flatten the copper tube, and a second driving cylinder for driving the pressing plate to move up and down are provided in the furnace body.

[0012] Through the above arrangement, the copper tube can be fully flattened.

[0013] Furthermore, when the copper tubes are flattened, the copper tubes abut against each other, and the copper tubes at both ends abut against the corresponding limit plates.

[0014] Through the above arrangement, when the copper tube is flattened, the position of the copper tube on the tray is fixed.

[0015] Furthermore, an upper mounting beam and a lower mounting beam are provided in the furnace body, and the upper mounting beam and the lower mounting beam extend along the conveying direction of the conveying roller. The upper mounting beam and the lower mounting beam are both located on the upper side of the conveying roller and on one side of the movement path of the tray. A first lifting mechanism for driving the upper mounting beam to move up and down, and a second lifting mechanism for driving the lower mounting beam to move up and down are provided on the furnace body; a plurality of first protruding plates are fixedly connected to the lower side of the upper mounting beam in sequence along the length direction, and a plurality of second protruding plates are fixedly connected to the upper side of the lower mounting beam in sequence along the length direction, and the first protruding plates all pass through the plurality of protruding plates for A first plug rod is inserted into the end of the copper tube and lifts the copper tube, the first plug rod and the first protruding plate are slidably connected, the second protruding plate is provided with a second plug rod for inserting the end of the copper tube and lifting the copper tube, the second plug rod and the second protruding plate are slidably connected, the first protruding plate and the second protruding plate are alternately arranged so that the first plug rod and the second plug rod are alternately arranged, and a push rod mechanism is provided on the furnace body, the push rod mechanism is used to drive the first plug rod and the second plug rod to move along their respective axes so that the first plug rod and the second plug rod are inserted into or pulled out of the end of the copper tube; when the copper tube is flattened, the first plug rod and the second plug rod are aligned with the end of the copper tube.

[0016] With the above arrangement, during annealing, the copper tubes can be separated from the tray below and from each other, that is, the outer periphery of the copper tubes is vacant, so that the circumference of the copper tubes can be heated stably and evenly.

[0017] Furthermore, the push rod mechanism includes a push plate arranged on the side of the upper mounting beam away from the movement path of the pallet, a push cylinder for driving the push plate close to or away from the pallet, and the ends of the first insertion rod and the second insertion rod away from the movement path of the pallet are both slidably connected to the push plate.

[0018] With the above arrangement, when the push cylinder drives the push plate, the first and second rods can be driven to move synchronously. When the upper and lower mounting beams move up and down, the first and second rods slide up and down on the push plate.

[0019] Furthermore, the upper side of the support plate is fixedly connected to the limiting column, and the upper end of the limiting column can protrude from the upper side of the conveyor roller to position the pallet; when the front side of the bottom plate abuts against the limiting column, the unfolding mechanism unfolds the side plate, and after the copper tube is flattened, the first insertion rod and the second insertion rod are aligned with the end of the copper tube.

[0020] Furthermore, a guide column extending vertically is fixedly connected to the upper side of the upper mounting beam, the guide column passes through the upper side of the annealing furnace and is slidably connected to the annealing furnace, and the first lifting mechanism includes a winch arranged on the upper side of the annealing furnace, and the winch is connected to the upper mounting beam through a steel strand.

[0021] Through the above arrangement, the upper installation beam can be driven up and down by the winch to retract and extend the steel strands.

[0022] Furthermore, the second lifting mechanism is a third driving cylinder arranged at the lower side of the annealing furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a copper tube annealing system according to an embodiment.

[0024] Figure 2 for Figure 1 AA cross-sectional view.

[0025] Figure 3 This is a bottom view of the tray.

[0026] Figure 4 Schematic diagram of the tray and copper tube after entering the annealing furnace.

[0027] Figure 5 This is a schematic diagram of the copper tube after it is flattened.

[0028] Figure 6 This is a schematic diagram after the first and second rods are inserted into the copper tube.

[0029] Figure 7 This is a schematic diagram of the first and second rods after lifting the copper tube.

[0030] Figure 8 This is a schematic diagram of the copper tube annealing system during discharge of the embodiment. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0032] See also Figures 1 to 8 A copper tube annealing system includes an annealing furnace 11, a tray 12 for stacking copper tubes 21, and a conveying roller 13 for conveying the tray 12. The conveying roller 13 passes through the annealing furnace 11 to convey the tray 12 into or out of the annealing furnace 11. The tray 12 includes a bottom plate 121 and side plates 122 rotatably connected to the front and rear sides of the bottom plate 121. A torsion spring (not shown in the figure) is provided between the bottom plate 121 and the side plates 122 to apply a torsion force to the side plates 122 so that the side plates 122 extend upward. The annealing furnace 11 includes a furnace body 111 and a side plate 122 provided on one side of the furnace body 111. The furnace body 111 is provided with a feed door 112, a first switch mechanism for opening and closing the feed door 112 (not shown in the figure), a discharge door 113 arranged on the other side of the furnace body 111, and a second switch mechanism for opening and closing the discharge door 113 (not shown in the figure). The conveying roller 13 passes through the feed door 112 and the discharge door 113. The furnace body 111 is provided with an unfolding mechanism 14 that can unfold the side panel 122 to a horizontal level. When the side panel 122 is horizontal, the upper side of the side panel 122 is flush with the upper side of the bottom panel 121, so that the copper tube can automatically roll to the side panel under the action of gravity and be flattened into a layer.

[0033] In this application, after the conveyor rollers 13 deliver the tray 12 and the stacked copper tubes 21 into the annealing furnace 11, the unfolding mechanism 14 unfolds the side panels 122 to a horizontal position. The copper tubes automatically roll onto the side panels under the action of gravity and flatten into a single layer. This ensures that when the copper tubes 21 are annealed in the annealing furnace 11, the annealing degree of each copper tube 21 is similar. After annealing is completed, the torsion springs cause the side panels 122 to move upward again, reducing the volume of the tray 12 and allowing the copper tubes 21 to be stacked again. After unloading, the tray 12 can be easily removed.

[0034] Specifically, the annealing furnace 11 can anneal the copper tube 21. Initially, see Figure 1 After the copper tubes 21 are prepared, they are stacked on the tray 12. The tray 12 moves toward the annealing furnace 11 under the action of the conveyor roller 13. After the tray 12 enters the furnace body 111 through the feed door 112, the first switch mechanism closes the feed door 112. The unfolding mechanism 14 rotates the side plate 122 outward so that the side plate 122 is unfolded to a horizontal position. Figure 5 Under the action of gravity, the copper tube 21 is automatically flattened. When the annealing furnace 11 anneals the copper tube 21, the heating and heat dissipation rates of each copper tube 21 are basically the same, so that the annealing degree of each copper tube 21 is close, which makes it easier to control the quality of the copper tube 21. After annealing is completed, under the action of the torsion spring, the side plate 122 automatically rebounds upward, and the copper tube 21 is stacked again in the tray 12. The volume of the tray 12 is reduced for easy transportation. The second switch mechanism opens the discharge door 113, and under the action of the conveyor roller 13, the tray 12 leaves the annealing furnace 11. See Figure 8 .

[0035] Specifically, a feed door 112 is slidably connected to one side of the furnace body 111. A first switch mechanism can drive the feed door 112 up and down to open and close it. A discharge door 113 is slidably connected to the other side of the furnace body 111. A second switch mechanism can drive the discharge door 113 up and down to open and close it. The first and second switch mechanisms are conventional and will not be elaborated here.

[0036] As an implementation method, ear plates 123 extend from the front and rear sides of the base plate 121, the side plate 122 is fixedly connected to a rotating shaft 124, the rotating shaft 124 is rotatably connected to the ear plate 123, the rotating shaft 124 is fixedly connected to a wire wheel 125, a pull wire 126 is wound around the wire wheel 125, a mounting groove 127 is provided on the lower side of the base plate 121, a connecting block 128 is provided in the mounting groove 127, a wire channel is provided in the base plate 121, and the pull wire 126 is connected to the connecting block 128 through the wire channel; the unfolding mechanism 14 includes a support plate 141 arranged in the furnace body 111 and on the lower side of the conveying roller 13, a first driving cylinder 142 that can drive the support plate 141 to move up and down, and an electromagnet 143 fixedly connected to the upper side of the support plate 141 and capable of adsorbing the connecting block 128.

[0037] Through the above arrangement, the side panel 122 is rotatably connected to the bottom panel 121 through the rotating shaft 124, the ear plate 123, and the bottom panel 121. When the electromagnet 143 adsorbs the connecting block 128, the first driving cylinder 142 drives the electromagnet 143 downward to unfold the side panel 122 through the connecting block 128, the pull wire 126, the pulley 125, and the rotating shaft 124. When the electromagnet 143 releases the connecting block 128, the side panel 122 automatically rebounds under the action of the torsion spring.

[0038] Specifically, when the tray 12 enters the annealing furnace 11, the electromagnet 143 is located at the lower side of the connecting block 128, see Figure 4 After the electromagnet 143 attracts the connecting block 128, the first driving cylinder 142 drives the support plate 141 downward, and the electromagnet 143 drives the connecting block 128 to move downward. The connecting block 128 pulls the pull wire 126, and the pull wire 126 is released from the wire wheel 125. After the wire wheel 125 rotates, it drives the side plate 122 to open. Figure 5 When the electromagnet 143 releases the side plate 122, the side plate 122 automatically rebounds under the action of the torsion spring. Figure 8 .

[0039] As an implementation method, a side of the side plate 122 away from the bottom plate 121 is fixedly connected to a limit plate 129 . When the side plate 122 is horizontal, the limit plate 129 extends upward to prevent the copper tube 21 from rolling off the edge of the side plate 122 .

[0040] As an implementation method, a pressing plate 114 for pressing down the copper tube 21 to help the copper tube 21 to be flattened, and a second driving cylinder 115 for driving the pressing plate 114 to move up and down are provided in the furnace body 111 .

[0041] Through the above arrangement, the copper tube 21 can be fully flattened.

[0042] Specifically, when the side plates 122 are unfolded, the copper tubes 21 may not be automatically flattened due to the friction between the copper tubes 21. At this time, the second driving cylinder 115 drives the pressing plate 114 to move downward, and the copper tubes 21 are flattened on the unfolded tray 12. Figure 5 .

[0043] As an implementation method, when the copper tubes 21 are flattened, the copper tubes 21 abut against each other, and the copper tubes 21 at both ends abut against the corresponding limiting plates 129 .

[0044] Through the above arrangement, when the copper tube 21 is flattened, the position of the copper tube 21 on the tray 12 is fixed.

[0045] As an implementation method, an upper mounting beam 116 and a lower mounting beam 117 are provided in the furnace body 111, and the upper mounting beam 116 and the lower mounting beam 117 extend along the conveying direction of the conveying roller 13. The upper mounting beam 116 and the lower mounting beam 117 are both located on the upper side of the conveying roller 13 and on one side of the movement path of the tray 12. A first lifting mechanism 1111 for driving the upper mounting beam 116 to move up and down, and a second lifting mechanism 1112 for driving the lower mounting beam 117 to move up and down are provided on the furnace body 111; a plurality of first protruding plates 1161 are fixedly connected in sequence along the length direction to the lower side of the upper mounting beam 116, and a plurality of second protruding plates 1171 are fixedly connected in sequence along the length direction to the upper side of the lower mounting beam 117, and the first protruding plates 1161 all pass through the ends for inserting the copper tube 21 and lifting the copper tube The first plug rod 1162 of 21 is slidably connected to the first protruding plate 1161, and the second protruding plate 1171 is provided with a second plug rod 1172 for inserting the end of the copper tube 21 and lifting the copper tube 21. The second plug rod 1172 and the second protruding plate 1171 are slidably connected, and the first protruding plate 1161 and the second protruding plate 1171 are alternately arranged so that the first plug rod 1162 and the second plug rod 1172 are alternately arranged, and a push rod mechanism 1113 is provided on the furnace body 111, and the push rod mechanism 1113 is used to drive the first plug rod 1162 and the second plug rod 1172 to move along their respective axes so that the first plug rod 1162 and the second plug rod 1172 are inserted into or pulled out of the end of the copper tube 21; when the copper tube 21 is flattened, the first plug rod 1162 and the second plug rod 1172 are aligned with the end of the copper tube 21.

[0046] Through the above arrangement, during annealing, the copper tube 21 can be separated from the lower tray 12 and the copper tubes 21 can be separated from each other, that is, the outer periphery of the copper tube 21 is vacant, so that the circumference of the copper tube 21 can be heated stably and evenly.

[0047] Specifically, initially, the first insertion rod 1162 and the second insertion rod 1172 are retracted to leave space for the tray 12 in the furnace body 111. Figure 2 After the tray 12 and the copper tube 21 enter the furnace body 111, the copper tube 21 is flattened. Figure 5 At this time, the first plug rod 1162 and the second plug rod 1172 are aligned with the ends of the copper tube 21, and the push rod mechanism 1113 drives the first plug rod 1162 and the second plug rod 1172 to move toward the tray 12, and the first plug rod 1162 and the second plug rod 1172 are inserted into the copper tube 21. Figure 6Under the action of the first lifting mechanism 1111, the upper mounting beam 116 drives the copper tube 21 upward through the first plug 1162. Under the action of the second lifting mechanism 1112, the lower mounting beam 117 drives the copper tube 21 upward through the second plug 1172. The copper tube 21 and the tray 12 are disengaged. When the height of the upper mounting beam 116 is greater than the height of the lower mounting beam 117, the copper tubes 21 are disengaged from each other. Figure 7 After the annealing is completed, the upper mounting beam 116 and the lower mounting beam 117 and the first insertion rod 1162 and the second insertion rod 1172 are reset, and after the side plate 122 rebounds, the discharge door 113 is opened for discharge.

[0048] As an implementation method, the push rod mechanism 1113 includes a push plate 11131 arranged on the side of the movement path of the upper mounting beam 116 away from the pallet 12, a push cylinder 11132 for driving the push plate 11131 to move closer to or away from the pallet 12, and the ends of the first insertion rod 1162 and the second insertion rod 1172 away from the movement path of the pallet 12 are both slidably connected to the push plate 11131.

[0049] Through the above arrangement, when the pushing cylinder 11132 drives the push plate 11131, it can drive the first insertion rod 1162 and the second insertion rod 1172 to move synchronously. When the upper mounting beam 116 and the lower mounting beam 117 move up and down, the first insertion rod 1162 and the second insertion rod 1172 slide up and down on the push plate 11131.

[0050] Specifically, the push plate 11131 extends vertically, and the first plug rod 1162 and the second plug rod 1172 are always connected to the push plate 11131. The first plug rod 1162 and the second plug rod 1172 can only move up and down relative to the push plate 11131. Specifically, the first plug rod 1162 and the second plug rod 1172 can be slidably connected to the push plate 11131 through the guide rail and the push plate 11131 respectively, which will not be expanded here.

[0051] As an implementation method, the upper side of the support plate 141 is fixedly connected to the limiting column 144, and the upper end of the limiting column 144 can protrude from the upper side of the conveying roller 13 to position the pallet 12; when the front side of the bottom plate 121 abuts against the limiting column 144, the unfolding mechanism 14 unfolds the side plate 122, and after the copper tube 21 is flattened, the first insertion rod 1162 and the second insertion rod 1172 are aligned with the end of the copper tube 21.

[0052] Initially, the upper end of the limiting column 144 protrudes from the upper side of the conveying roller 13, see Figure 1When bottom plate 121 abuts against stop posts 144 under the action of conveyor rollers 13, tray 12 is positioned. After unfolding mechanism 14 unfolds side plates 122 and copper tube 21 is flattened, first and second insertion rods 1162, 1172 are aligned with the ends of copper tube 21, allowing them to be inserted into and lifted. After annealing of copper tube 21, the upper ends of stop posts 144 are lower than the upper side of conveyor rollers 13, allowing tray 12 to be unloaded smoothly.

[0053] As an implementation method, a guide column 1163 extending vertically is fixedly connected to the upper side of the upper mounting beam 116. The guide column 1163 passes through the upper side of the annealing furnace 11 and is slidably connected to the annealing furnace 11. The first lifting mechanism 1111 includes a winch 1164 arranged on the upper side of the annealing furnace 11. The winch 1164 is connected to the upper mounting beam 116 through a steel wire rope 1165.

[0054] Through the above arrangement, the upper mounting beam 116 can be driven up and down by the winch 1164 to retract and extend the steel strand 1165 .

[0055] As an implementation manner, the second lifting mechanism 1112 is a third driving cylinder provided at the lower side of the annealing furnace 11 .

[0056] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A copper tube annealing system, comprising an annealing furnace, a tray for stacking copper tubes, and a conveyor roller for conveying the tray, wherein the conveyor roller passes through the annealing furnace to convey the tray into or out of the annealing furnace, characterized in that: The tray includes a bottom plate, and side plates rotatably connected to the front and rear sides of the bottom plate, wherein a torsion spring is provided between the bottom plate and the side plates to apply a torsion force to the side plates so that the side plates extend upward; The annealing furnace includes a furnace body, a feed door provided on one side of the furnace body, a first switch mechanism for opening and closing the feed door, a discharge door provided on the other side of the furnace body, and a second switch mechanism for opening and closing the discharge door. The conveying roller passes through the feed door and the discharge door. The furnace body is provided with an unfolding mechanism for unfolding the side panels to a horizontal level. When the side panels are horizontal, the upper sides of the side panels are flush with the upper side of the bottom panel, so that the copper tubes automatically roll onto the side panels under the action of gravity and are flattened into a layer. Ear plates extend from both the front and rear sides of the bottom plate, the side plates are fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the ear plates, the rotating shaft is fixedly connected to a wire wheel, a pull wire is wound around the wire wheel, a mounting groove is provided on the lower side of the bottom plate, a connecting block is provided in the mounting groove, a wire channel is provided in the bottom plate, and the pull wire is connected to the connecting block through the wire channel; The unfolding mechanism includes a support plate arranged in the furnace body and below the conveying roller, a first driving cylinder driving the support plate to move up and down, and an electromagnet fixedly connected to the upper side of the support plate and capable of adsorbing the connecting block.

2. A copper tube annealing system according to claim 1, characterized in that: A side of the side plate away from the bottom plate is fixedly connected to a limiting plate. When the side plate is horizontal, the limiting plate extends upward to prevent the copper tube from rolling off the edge of the side plate.

3. A copper tube annealing system according to claim 1, characterized in that: The furnace body is provided with a pressing plate for pressing down the copper tube to help the copper tube be flattened, and a second driving cylinder for driving the pressing plate to move up and down.

4. A copper tube annealing system according to claim 2, characterized in that: When the copper tubes are flattened, the copper tubes abut against each other, and the copper tubes at both ends abut against the corresponding limiting plates.

5. A copper tube annealing system according to claim 4, characterized in that: An upper mounting beam and a lower mounting beam are provided in the furnace body, and the upper mounting beam and the lower mounting beam extend along the conveying direction of the conveying roller. The upper mounting beam and the lower mounting beam are both located on the upper side of the conveying roller and on one side of the movement path of the tray. A first lifting mechanism for driving the upper mounting beam to move up and down and a second lifting mechanism for driving the lower mounting beam to move up and down are provided on the furnace body; The lower side of the upper mounting beam is fixedly connected with a plurality of first protruding plates in sequence along the length direction, and the upper side of the lower mounting beam is fixedly connected with a plurality of second protruding plates in sequence along the length direction, the first protruding plates all pass through a first plug rod for inserting the end of the copper tube and lifting the copper tube, the first plug rod and the first protruding plate are slidably connected, the second protruding plates are each provided with a second plug rod for inserting the end of the copper tube and lifting the copper tube, the second plug rod and the second protruding plate are slidably connected, the first protruding plate and the second protruding plate are alternately arranged so that the first plug rod and the second plug rod are alternately arranged, and a push rod mechanism is provided on the furnace body, and the push rod mechanism is used to drive the first plug rod and the second plug rod to move along their respective axes so that the first plug rod and the second plug rod can be inserted into or pulled out of the end of the copper tube; When the copper tube is flattened, the first insertion rod and the second insertion rod are aligned with ends of the copper tube.

6. A copper tube annealing system according to claim 5, characterized in that: The push rod mechanism includes a push plate arranged on a side of the upper mounting beam away from the movement path of the pallet, and a push cylinder for driving the push plate to approach or move away from the pallet, and one end of the first insertion rod and the second insertion rod away from the movement path of the pallet are both slidably connected to the push plate.

7. The copper tube annealing system according to claim 5, characterized in that: The upper side of the support plate is fixedly connected to a limiting column, and the upper end of the limiting column protrudes from the upper side of the conveying roller to position the tray; When the front side of the bottom plate abuts against the limiting column, the unfolding mechanism unfolds the side plate, and after the copper tube is flattened, the first insertion rod and the second insertion rod are aligned with the end of the copper tube.

8. The copper tube annealing system according to claim 5, characterized in that: A guide column extending vertically is fixedly connected to the upper side of the upper mounting beam, and the guide column passes through the upper side of the annealing furnace and is slidably connected to the annealing furnace. The first lifting mechanism includes a winch arranged on the upper side of the annealing furnace, and the winch is connected to the upper mounting beam through a steel strand.

9. The copper tube annealing system according to claim 5, characterized in that: The second lifting mechanism is a third driving cylinder provided at the lower side of the annealing furnace.

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