Multi-station stamping device for automobile exhaust pipe heat shield

Abstract

The utility model discloses an automobile exhaust pipe heat shield multi-station stamping device which comprises a working table, an annular groove is formed in the surface of the working table, and a stepping motor is fixedly installed in the middle of the top of the working table. According to the stamping die, the stepping motor, the supporting plate, the taking and placing assembly and other parts are arranged, the four lower dies are arranged on the surface of the supporting plate at equal intervals along the circumference, and when the output end of the stepping motor drives the supporting plate to rotate by 90 degrees every time, the taking and placing assembly is arranged in the stamping process of a heat insulation cover workpiece; when the vacuum suction cup on the right side places down a stamped workpiece, the vacuum suction cup on the left side can grab the workpiece needing to be stamped, then the workpiece is rotated by 180 degrees through the two symmetrical lifting rods, and the grabbed workpiece is placed in the lower die on the left side through the vacuum suction cup on the left side; and meanwhile, the vacuum suction cup on the right side grabs the workpiece in the lower die on the right side, continuous machining and stamping of the workpiece are achieved in this way, and the machining efficiency of the workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a multi-station punching device for an automobile exhaust pipe heat insulation cover. Background Art

[0002] Stamping is a metal processing method, which is based on the plastic deformation of metal. It uses molds and stamping equipment to apply pressure to the sheet material, so that the sheet material produces plastic deformation or separation, thereby obtaining parts (stamping parts) with certain shapes, sizes and performances. Stamping forming technology occupies an important position in the automobile body manufacturing process, especially automobile parts, because most of them have complex shapes, large structural dimensions, some are spatial curved surfaces, and high surface quality requirements, so the use of stamping processing methods to make these parts is incomparable to other processing methods. The cab of a heavy truck, the front sheet metal, the cargo board, various body covers of a car, and various frames of a bus are almost all made by stamping processing methods, and the stamping process is often used in the processing of the heat shield of the automobile exhaust pipe.

[0003] The Chinese patent document with publication number CN220591299U provides a car heat shield forming mold that is easy to control temperature, including an upper mold mounting seat and a lower mold mounting seat, the top of the lower mold mounting seat is provided with a lower mold, the bottom of the upper mold mounting seat is provided with an upper mold, the lower mold includes a lower pressure ring pad, and the middle part of the lower pressure ring pad is slidably connected with a lower punch pad. A car heat shield forming mold that is easy to control temperature is obtained by the above design. The car heat shield forming mold that is easy to control temperature is provided with a lower mold at the top of the lower mold mounting seat and an upper mold at the bottom of the upper mold mounting seat, so that the lower mold and the upper mold are conveniently connected with a stamping device, so that the stamping device can drive the lower mold and the upper mold to stamp the workpiece, and the lower pressure ring pad is conveniently arranged to fix the lower pressure ring, and the lower punch pad is conveniently arranged to fix the lower punch, and the lower punch is conveniently connected to the lower pressure ring through the sliding connection between the lower punch and the lower pressure ring, so that the lower pressure ring cooperates with the upper mold to fix the workpiece, and the lower punch slides upward relative to the lower pressure ring to stamp the workpiece;

[0004] In the above-mentioned existing automobile exhaust pipe heat shield stamping process, single-process molds such as blanking, punching, and pressing are used. This type of traditional single-process mold has a set of molds for each process. After completing the stamping of a single workpiece, the stamped workpiece must be removed and a new workpiece must be placed. Continuous processing and production cannot be carried out, resulting in slow production efficiency and high processing costs. Therefore, the utility model designs a multi-station stamping device for automobile exhaust pipe heat shields to solve the problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide a multi-station punching device for a heat shield of an automobile exhaust pipe, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-station stamping device for an automobile exhaust pipe heat insulation cover, comprising: a workbench, a ring groove is opened on the surface of the workbench, a stepper motor is fixedly installed at the middle position of the top of the workbench, and a support plate is fixedly installed at the output end of the stepper motor, a support collar is fixedly installed at the bottom of the support plate, and the bottom of the support collar is built inside the ring groove, four lower molds are fixedly installed at the top of the support plate at equal intervals along the circumference, a pick-and-place assembly is arranged between the middle position of the bottom of the workbench and the upper end of the workbench, a pusher assembly is arranged between the inner bottom of the lower mold and the bottom of the workbench, an arc-shaped protrusion is fixedly installed on one side of the top of the workbench, and the arc-shaped protrusion is arranged at the bottom of the adjacent pusher assembly, an L-shaped bracket is fixedly installed on the surface of the rear end of the workbench, and a hydraulic cylinder is fixedly installed on the top of the L-shaped bracket, an upper mold is fixedly installed at the output end of the hydraulic cylinder, and support legs are fixedly installed around the bottom of the workbench.

[0007] Preferably, six balls are installed at equal intervals along the circumference of the inner bottom of the annular groove, an annular groove is provided at the bottom of the support collar, and the surface of the balls is placed in the annular groove at the bottom of the support collar.

[0008] Preferably, the pick-and-place assembly comprises: a servo motor, a rotating drum, a first synchronous pulley, a second synchronous pulley and an electric push rod, the servo motor is fixedly mounted at the middle position of the bottom of the workbench, two rotating drums are provided, and the two rotating drums are symmetrically mounted on both sides of the workbench for rotation, two first synchronous pulleys are provided, and the two first synchronous pulleys are symmetrically fixedly mounted on the output end of the servo motor, two second synchronous pulleys are provided, and the two second synchronous pulleys are respectively fixedly mounted on the surface of the lower end of the adjacent rotating drum, a synchronous belt is installed on the surface of the second synchronous pulley, and one end of the synchronous belt is installed on the surface of the adjacent first synchronous pulley, two electric push rods are provided, and the two electric push rods are symmetrically fixedly mounted on both sides of the bottom of the workbench, a connecting plate is fixedly mounted on the output end of the electric push rod, and a lifting rod is fixedly mounted on one side of the top of the connecting plate, and the lifting rod is movably mounted in the vertical direction inside the adjacent rotating drum, the upper end of the lifting rod extends to the outside of the rotating drum, a fixing plate is fixedly mounted on the top of the lifting rod, and a vacuum suction cup is fixedly mounted in the middle of the fixing plate, and an air pipe is fixedly mounted on one side of the vacuum suction cup, and the vacuum suction cup is located directly below the adjacent lower mold.

[0009] Preferably, a slide groove is provided on the inner wall of the rotating drum, a sliding block is fixedly mounted on the surface of the lifting rod, and the surface of the lifting rod is slidably mounted on the inner wall of the rotating drum via the sliding block.

[0010] Preferably, the pushing assembly includes: a T-shaped movable rod, which is movably arranged inside the lower mold, and the bottom of the T-shaped movable rod extends to the bottom of the workbench, and a limiting ring is fixedly installed on the surface of the middle part of the T-shaped movable rod, and a return spring is mounted on the surface of the upper end of the limit ring, and one end of the return spring is fixedly connected to the bottom of the workbench, and the other end of the return spring is fixedly connected to the surface of the top of the limit ring.

[0011] Preferably, the bottom of the T-shaped movable rod is configured to be arc-shaped, and the arc of the bottom of the T-shaped movable rod matches the arc-shaped surface of the arc-shaped protrusion.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model is provided with components such as a stepper motor, a support plate and a pick-and-place assembly. Since four lower molds are equidistantly arranged on the surface of the support plate along the circumference, when the output end of the stepper motor drives the support plate to rotate 90 degrees each time, in the stamping of the heat shield workpiece, through the setting of the pick-and-place assembly, while the vacuum suction cup on the right puts down the stamped workpiece, the vacuum suction cup on the left can grab the workpiece to be stamped, and then after the two symmetrical lifting rods rotate 180 degrees, the vacuum suction cup on the left places the grabbed workpiece in the lower mold on the left, and the vacuum suction cup on the right grabs the workpiece in the lower mold on the right, so that the continuous processing and stamping of the workpiece is realized in this reciprocating manner, thereby improving the processing efficiency of the workpiece;

[0014] 2. The utility model arranges components such as arc-shaped protrusions, lower molds and pusher assemblies. After the stepper motor drives the workpiece that has completed stamping on the support plate to rotate to the bottom of the vacuum suction cup on the right, the arc-shaped protrusions and the adjacent pusher assemblies are arranged. Before the vacuum suction cup grabs the stamped workpiece, the bottom of the T-shaped movable rod presses against the surface of the arc-shaped protrusion to lift the stamped workpiece in the lower mold to a certain height, thereby avoiding the situation where the workpiece sinks into the lower mold after stamping, causing inconvenience in grabbing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front cross-sectional view of the utility model;

[0016] Figure 2 For the utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0017] Figure 3 It is a main schematic diagram of the utility model;

[0018] Figure 4 It is a top view schematic diagram of the utility model.

[0019] In the figure: 1. workbench; 101. arc-shaped protrusion; 102. annular groove; 2. stepper motor; 3. support plate; 4. support collar; 5. lower die; 6. pick-and-place assembly; 601. servo motor; 602. rotating drum; 603. first synchronous pulley; 604. second synchronous pulley; 605. synchronous belt; 606. electric push rod; 607. connecting plate; 608. lifting rod; 6081. fixing plate; 609. vacuum suction cup; 6091. air pipe; 7. push assembly; 701. T-shaped movable rod; 702. limiting ring; 703. reset spring; 8. L-shaped bracket; 9. hydraulic cylinder; 10. upper die; 11. support leg. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides an embodiment: a multi-station stamping device for an automobile exhaust pipe heat insulation cover, comprising: a workbench 1, a ring groove 102 is opened on the surface of the workbench 1, a stepper motor 2 is fixedly installed at the middle position of the top of the workbench 1, and the stepper motor 2 is set by parameters to realize 90-degree rotation each time. When the workpiece rotates to the bottom of the upper die 10, the upper die 10 is pushed down by the output end of the hydraulic cylinder 9 to perform stamping processing on the workpiece, and a support plate 3 is fixedly installed at the output end of the stepper motor 2, a support collar 4 is fixedly installed at the bottom of the support plate 3, and the bottom of the support collar 4 is built inside the ring groove 102, and four lower dies 5 are fixedly installed at the top of the support plate 3 at equal distances along the circumference, and a pick-up and place component 6 is arranged between the middle position of the bottom of the workbench 1 and the upper end of the workbench 1, and through the setting of the pick-up and place component 6, while the vacuum suction cup 609 on the right puts down the stamped workpiece, the vacuum suction cup 609 on the left can grab the workpiece to be stamped, so as to realize the synchronization of workpiece grabbing and placing. The workpiece is then placed in the lower die 5 by the left vacuum suction cup after rotating 180 degrees through two symmetrical lifting rods, and the vacuum suction cup on the right grabs the workpiece in the lower die 5 on the left, and the vacuum suction cup on the right grabs the workpiece in the lower die 5 on the right, and the continuous processing and stamping of the workpiece is realized in this reciprocating manner, thereby improving the processing efficiency of the workpiece. A pusher assembly 7 is arranged between the inner bottom of the lower die 5 and the bottom of the workbench 1, and an arc-shaped protrusion 101 is fixedly installed on one side of the top of the workbench 1, and the arc-shaped protrusion 101 is arranged at the bottom of the adjacent pusher assembly 7, and the arc-shaped protrusion 101 is arranged with the adjacent pusher assembly 7, before the vacuum suction cup 609 grabs the stamped workpiece, it can lift the stamped workpiece in the lower die 5 to a certain height, so as to avoid the workpiece from sinking into the lower die 5 after stamping, causing inconvenience in grabbing. An L-shaped bracket 8 is fixedly installed on the surface of the rear end of the workbench 1, and a hydraulic cylinder 9 is fixedly installed on the top of the L-shaped bracket 8, and an upper die 10 is fixedly installed on the output end of the hydraulic cylinder 9, and support legs 11 are fixedly installed on all sides of the bottom of the workbench 1.

[0022] See also Figure 1 In the embodiment of the utility model, six balls are installed at equal intervals along the circumference of the inner bottom of the annular groove 102, and an annular groove is provided at the bottom of the support collar 4. The surface of the balls is placed in the annular groove at the bottom of the support collar 4. By setting the balls and the annular groove at the bottom of the support collar 4, the contact connection between the bottom of the support collar 4 and the inner bottom of the annular groove 102 is reduced, the friction force is reduced, and the rotation stability of the support collar 4 is improved.

[0023] See also Figure 1-3In the embodiment of the utility model: the pick-and-place assembly 6 includes: a servo motor 601, a rotating drum 602, a first synchronous pulley 603, a second synchronous pulley 604 and an electric push rod 606. The servo motor 601 is fixedly installed at the middle position of the bottom of the workbench 1. The servo motor 601 performs 180-degree forward and reverse rotation through parameter setting. There are two rotating drums 602, and the two rotating drums 602 are symmetrically installed on both sides of the workbench 1. The surface of the rotating drum 602 is rotatably installed with the inside of the workbench 1 through a bearing. There are two first synchronous pulleys 603, and the two first synchronous pulleys 603 are symmetrically fixedly installed at the output end of the servo motor 601. There are two second synchronous pulleys 604, and the two second synchronous pulleys 604 are respectively fixedly installed on the surface of the lower end of the adjacent rotating drum 602. The surface of the second synchronous pulley 604 is installed with a synchronous belt 605 One end of the synchronous belt 605 is installed on the surface of the adjacent first synchronous pulley 603, and two electric push rods 606 are provided. The two electric push rods 606 are symmetrically fixedly installed on both sides of the bottom of the workbench 1, and the output end of the electric push rod 606 is fixedly installed with a connecting plate 607, and a lifting rod 608 is fixedly installed on one side of the top of the connecting plate 607, and the lifting rod 608 is movably installed in the vertical direction inside the adjacent rotating cylinder 602, and the upper end of the lifting rod 608 extends to the outside of the rotating cylinder 602, and a fixed plate 6081 is fixedly installed on the top of the lifting rod 608, and a vacuum suction cup 609 is fixedly installed in the middle of the fixed plate 6081, and an air pipe 6091 is fixedly installed on one side of the vacuum suction cup 609, and the air pipe 6091 passes through an external air source, and the vacuum suction cup 609 takes and places the workpiece, and the vacuum suction cup 609 is located directly below the adjacent lower mold 5. The left side of the workbench 1 is passed through an external conveyor belt, and the automobile exhaust pipe heat shield workpiece to be stamped is located on the conveyor belt. The right side of the workbench 1 is passed through an external conveyor belt for conveying the stamped automobile exhaust pipe heat shield workpiece to the next process. When stamping the automobile exhaust pipe heat shield workpiece, first start the servo motor 601, so that the output end of the servo motor 601 drives the first synchronous pulley 603 fixedly installed on the surface to rotate 180 degrees, and the vacuum suction cup 609 on the left rotates to the top of the corresponding conveyor belt, and the vacuum suction cup on the right rotates to the top of the corresponding conveyor belt. The disk 609 rotates to the top of the corresponding conveyor belt. At this time, the second synchronous pulley 604 drives the corresponding rotating drum 602 to rotate 180 degrees through the transmission of the synchronous belt 605. The output end of the electric push rod 606 pushes the corresponding connecting plate 607 down, so that the vacuum suction cup 609 on the left can pick up the workpiece on the conveyor belt. In addition, the vacuum suction cup 609 on the right will place the workpiece grabbed from the inside of the lower mold 5 on the surface of the conveyor belt and transport it to the next process. This reciprocating process can realize continuous processing and stamping of the workpiece, thereby improving the processing efficiency of the workpiece.

[0024] See also Figure 2In the embodiment of the utility model, a sliding groove is provided on the inner wall of the rotating drum 602, a slider is fixedly installed on the surface of the lifting rod 608, and the surface of the lifting rod 608 is slidably installed on the inner wall of the rotating drum 602 through the slider. When the rotating drum 602 rotates 180 degrees, the rotating drum 602 can drive the lifting rod 608 to rotate synchronously.

[0025] See also Figure 1 In the embodiment of the utility model: the pusher assembly 7 includes: a T-shaped movable rod 701, the T-shaped movable rod 701 is movably arranged inside the lower mold 5, and a circular groove matching the upper end of the T-shaped movable rod 701 is opened inside the lower mold 5. After the T-shaped movable rod 701 is lowered into place, the surface of the top of the T-shaped movable rod 701 is flush with the inner ground of the lower mold 5, and the bottom of the T-shaped movable rod 701 extends to the bottom of the workbench 1. A limiting ring 702 is fixedly installed on the surface of the middle part of the T-shaped movable rod 701, and a reset spring 703 is mounted on the surface of the upper end of the limiting ring 702, and one end of the reset spring 703 is fixedly connected to the bottom of the workbench 1, and the other end of the reset spring 703 is fixedly connected to the surface of the top of the limiting ring 702. When the output end of the stepper motor 2 drives the lower die 5 on the support plate 3 to rotate 90 degrees, when the lower die 5 after stamping is rotated to the position of the vacuum suction cup 609 on the right, the bottom of the T-shaped movable rod 701 is squeezed by the arc-shaped protrusion 101 and moves upward, thereby lifting the workpiece stamped inside the lower die 5 to a certain height, making it easier for the vacuum suction cup 609 to grab the stamped workpiece, thereby avoiding the situation where the workpiece sinks into the lower die 5 after stamping, causing inconvenience in grabbing.

[0026] See also Figure 1 In the embodiment of the utility model, the bottom of the T-shaped movable rod 701 is set to be arc-shaped, and the arc of the bottom of the T-shaped movable rod 701 matches the arc surface of the arc-shaped protrusion 101. By setting the arc shape of the bottom of the T-shaped movable rod 701, when the bottom of the T-shaped movable rod 701 is squeezed, the contact area between the bottom of the T-shaped movable rod 701 and the surface of the arc-shaped protrusion 101 is reduced, the friction is reduced, and the upward movement of the T-shaped movable rod 701 is facilitated.

[0027] Working principle: When the power is turned on, during the stamping of the automobile exhaust pipe heat insulation cover workpiece, the servo motor 601 is first started, so that the output end of the servo motor 601 drives the first synchronous pulley 603 fixed on the surface to rotate 180 degrees, and the vacuum suction cup 609 on the left rotates to the top of the corresponding conveyor belt, and the vacuum suction cup 609 on the right rotates to the top of the corresponding conveyor belt. At this time, the second synchronous pulley 604 drives the corresponding rotating drum 602 to rotate 180 degrees through the transmission of the synchronous belt 605, and then the output end of the electric push rod 606 pushes the corresponding connecting plate 607 down, so that the left side The vacuum suction cup 609 on the right side picks up the workpiece on the conveyor belt. In addition, the vacuum suction cup 609 on the right side places the workpiece grabbed from the inside of the lower mold 5 on the surface of the conveyor belt and transports it to the next process. In addition, when the output end of the stepper motor 2 drives the lower mold 5 on the support plate 3 to rotate 90 degrees, when the lower mold 5 after stamping is rotated to the position of the vacuum suction cup 609 on the right side, the bottom of the T-shaped movable rod 701 is squeezed by the arc protrusion 101 and moves upward, thereby lifting the workpiece stamped inside the lower mold 5 to a certain height, so as to facilitate the vacuum suction cup 609 to grab the stamped workpiece. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-station stamping device for an automobile exhaust pipe heat shield, comprising: A workbench (1), characterized in that: an annular groove (102) is provided on the surface of the workbench (1); a stepper motor (2) is fixedly installed at the middle position of the top of the workbench (1); a support plate (3) is fixedly installed at the output end of the stepper motor (2); a support collar (4) is fixedly installed at the bottom of the support plate (3); and the bottom of the support collar (4) is arranged inside the annular groove (102); four lower molds (5) are fixedly installed at equal distances along the circumference of the top of the support plate (3); and a lower mold (5) is provided between the middle position of the bottom of the workbench (1) and the upper end of the workbench (1). A pick-and-place assembly (6), a pusher assembly (7) is arranged between the inner bottom of the lower mold (5) and the bottom of the workbench (1), an arc-shaped protrusion (101) is fixedly installed on one side of the top of the workbench (1), and the arc-shaped protrusion (101) is arranged at the bottom of the adjacent pusher assembly (7), an L-shaped bracket (8) is fixedly installed on the surface of the rear end of the workbench (1), and a hydraulic cylinder (9) is fixedly installed on the top of the L-shaped bracket (8), an upper mold (10) is fixedly installed on the output end of the hydraulic cylinder (9), and support legs (11) are fixedly installed on all four sides of the bottom of the workbench (1).

2. The multi-station punching device for automobile exhaust pipe heat shield according to claim 1, characterized in that: Six balls are installed at equal intervals along the circumference of the inner bottom of the annular groove (102), an annular sliding groove is provided at the bottom of the support collar (4), and the surface of the balls is placed in the annular sliding groove at the bottom of the support collar (4).

3. The multi-station punching device for automobile exhaust pipe heat shield according to claim 1, characterized in that: The pick-and-place assembly (6) comprises: a servo motor (601), a rotating drum (602), a first synchronous belt pulley (603), a second synchronous belt pulley (604) and an electric push rod (606), wherein the servo motor (601) is fixedly mounted at the middle position of the bottom of the workbench (1), two rotating drums (602) are provided, and the two rotating drums (602) are symmetrically mounted on both sides of the workbench (1), two first synchronous belt pulleys (603) are provided, and the two first synchronous belt pulleys (603) are symmetrically fixedly mounted on the output end of the servo motor (601), two second synchronous belt pulleys (604) are provided, and the two second synchronous belt pulleys (604) are respectively fixedly mounted on the surface of the lower end of the adjacent rotating drum (602), and a synchronous belt (605) is installed on the surface of the second synchronous belt pulley (604), and one end of the synchronous belt (605) is installed on the adjacent Two electric push rods (606) are provided on the surface of the first synchronous pulley (603). The two electric push rods (606) are symmetrically fixedly installed on both sides of the bottom of the workbench (1). A connecting plate (607) is fixedly installed on the output end of the electric push rod (606), and a lifting rod (608) is fixedly installed on one side of the top of the connecting plate (607). The lifting rod (608) is movably installed in the vertical direction inside the adjacent rotating drum (602). The upper end of the lifting rod (608) extends to the outside of the rotating drum (602). A fixed plate (6081) is fixedly installed on the top of the lifting rod (608), and a vacuum suction cup (609) is fixedly installed in the middle of the fixed plate (6081). An air pipe (6091) is fixedly installed on one side of the vacuum suction cup (609). The vacuum suction cup (609) is located directly below the adjacent lower mold (5).

4. The multi-station punching device for automobile exhaust pipe heat shield according to claim 3, characterized in that: The inner wall of the rotating drum (602) is provided with a sliding groove, and a sliding block is fixedly installed on the surface of the lifting rod (608). The surface of the lifting rod (608) is slidably installed on the inner wall of the rotating drum (602) through the sliding block.

5. The multi-station punching device for automobile exhaust pipe heat shield according to claim 1, characterized in that: The pusher assembly (7) comprises: a T-shaped movable rod (701), the T-shaped movable rod (701) is movably arranged to penetrate the interior of the lower mold (5), the bottom of the T-shaped movable rod (701) extends to the bottom of the workbench (1), a limit ring (702) is fixedly installed on the surface of the middle part of the T-shaped movable rod (701), the surface of the upper end of the limit ring (702) is sleeved with a return spring (703), and one end of the return spring (703) is fixedly connected to the bottom of the workbench (1), and the other end of the return spring (703) is fixedly connected to the surface of the top of the limit ring (702).

6. The multi-station punching device for automobile exhaust pipe heat shield according to claim 5, characterized in that: The bottom of the T-shaped movable rod (701) is configured to be arc-shaped, and the arc-shaped bottom of the T-shaped movable rod (701) matches the arc-shaped surface of the arc-shaped protrusion (101).

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