A continuous production equipment and process for a stainless steel heat shield of an automobile exhaust pipe

Abstract

The present application relates to the field of heat shield production and processing, in particular to a continuous production equipment and process of automobile exhaust pipe stainless steel heat shield, wherein the continuous production equipment of automobile exhaust pipe stainless steel heat shield comprises an upper seat plate and a lower seat plate, the upper seat plate and the lower seat plate are fixedly connected with guide columns, the lower stamping plate and the upper stamping plate are slidably connected on the two guide columns, the lower stamping plate and the upper stamping plate are respectively provided with corresponding lower forming cavities and upper forming cavities, and the upper seat plate and the lower seat plate are provided with an intermediate support mechanism, the intermediate support mechanism comprises an intermediate support column and an intermediate support cavity communicated with the intermediate support column, so that the present application can effectively support the exhaust pipe from the inside of the exhaust pipe when the stainless steel heat shield is welded on the exhaust pipe, and prevent the exhaust pipe from deforming in the welding process.

Description

Technical Field

[0001] This invention relates to the field of heat insulation cover production and processing, specifically to a continuous production equipment and process for stainless steel heat insulation covers for automobile exhaust pipes. Background Technology

[0002] Exhaust pipes release a lot of heat during operation, especially those located below the driver's seat. The heat emitted by these pipes can seriously affect the driver's experience. Heat shields can effectively reduce heat transfer. In vehicles such as motorcycles, heat shields can also prevent burns to the driver or other personnel due to operational errors or accidental contact. In addition to heat insulation, heat shields can also reduce noise generated by exhaust pipe vibration to some extent.

[0003] There are two main types of heat shields for exhaust pipes. One type covers the area between the vehicle body and the exhaust pipe, primarily installed at the bottom of the frame. The other type directly covers the outer end of the exhaust pipe, with both ends welded directly to the exhaust pipe using a rolling mill. However, in the traditional welding process, the heat shield is first clamped onto the exhaust pipe using a jig, and then the two ends are welded to the exhaust pipe using a rolling mill. But when welding the exhaust pipe using this method, because the exhaust pipe lacks internal support and is often quite thin, the heat shield will experience localized stress during fixing and welding, causing deformation of the exhaust pipe and affecting its performance during use. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a continuous production equipment for stainless steel heat shields on automotive exhaust pipes. This equipment effectively provides comprehensive support to the exhaust pipe from the inside when welding the stainless steel heat shield onto the exhaust pipe, preventing deformation of the exhaust pipe during the welding process.

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

[0006] This invention provides a continuous production equipment for stainless steel heat insulation covers for automobile exhaust pipes, including an upper seat plate and a lower seat plate. The upper seat plate is disposed at the upper end of the upper seat plate, and a guide post fixedly connected to the upper seat plate is fixedly connected to the middle of the left and right sides of the lower seat plate.

[0007] The lower stamping plate is slidably connected to two guide posts in the vertical direction at the middle of the lower stamping plate, and a semi-circular lower forming cavity is opened at the middle of the upper end of the lower stamping plate.

[0008] The upper stamping plate is slidably connected to two guide posts in the vertical direction at the middle of the upper stamping plate, and a semi-circular upper forming cavity is opened at the middle of the lower end of the upper stamping plate.

[0009] An intermediate support mechanism includes an intermediate support column and an intermediate support bladder communicating with the intermediate support column. One end of the intermediate support column is fixedly connected to a flow rod, which is fixedly mounted between the upper seat plate and the lower seat plate. The intermediate support column is positioned between the upper forming cavity and the lower forming cavity. The outer side of the intermediate support column is fixedly wrapped with an intermediate support bladder.

[0010] Specifically, the length of the intermediate support bladder is greater than that of the lower and upper stamping plates. Heat insulation grooves are formed at both ends of the intermediate support bladder, extending beyond the upper and lower stamping plates. Heat insulation mechanisms are installed within these grooves, and multiple heat insulation mechanisms are evenly distributed circumferentially along the grooves. Each heat insulation mechanism includes a heat insulation sheet and positioning pins. Each heat insulation mechanism includes four positioning pins arranged in a rectangular pattern. A circumferential sliding groove is formed on the heat insulation sheet corresponding to each of the four positioning pins. The circumferential sliding grooves are slidably connected along the circumference of the intermediate support bladder.

[0011] Specifically, the intermediate support column has an inflow cavity and an outflow cavity respectively opened along its axial direction. The inflow cavity has a number of through holes that connect the inflow cavity and the intermediate support bladder. The outflow cavity has a number of through holes that connect the outflow cavity and the intermediate support bladder. The two ends of the flow rod have flow channels that connect to the inflow cavity and the outflow cavity respectively. A flow limiting valve is installed at the end of the flow rod that connects to the outflow cavity.

[0012] Specifically, an inner support mechanism is provided on the intermediate support column. The inner support mechanism includes an inner support slip ring, an inner support connecting rod, and an inner support rod. The inner support slip ring is slidably sleeved on the intermediate support column. Multiple inner support slip rings are evenly distributed along the axial direction of the intermediate support column. Multiple inner support slip rings are synchronously and fixedly connected together by connecting rods. Multiple inner support slip rings are evenly arranged circumferentially on each inner support slip ring. The inner support connecting rod intersects with the inner support slip ring. An inner support rod is fixedly connected to the inner wall of the intermediate support bladder corresponding to the inner support connecting rod. The inner support rod is hinged to the other end of the inner support connecting rod.

[0013] Specifically, a clamping groove is provided at each end of the lower stamping plate. The clamping groove is equipped with a heat insulation cover clamping mechanism. The heat insulation cover clamping mechanism includes a clamping slider, a clamping rod, and a clamping roller. The clamping groove is separated in the middle. A clamping slider is symmetrically slidably connected to both sides of the clamping groove. A clamping rod is rotatably connected to the clamping slider. The two clamping rods are inclined in the direction of their opposite ends. A clamping spring rod is provided between the clamping rod and the clamping slider. The two ends of the clamping spring rod are respectively hinged to the clamping rod and the clamping slider. A clamping roller is rotatably connected to the end of the clamping rod. A push spring is provided in the clamping groove. The two ends of the push spring are respectively fixedly installed at the ends of the clamping slider and the clamping groove.

[0014] Specifically, each of the two pressing sliders is hinged with a spreading rod, and the ends of the two spreading rods are fixedly installed with spreading gears. The two spreading gears mesh with each other, and a spreading seat is set corresponding to the two spreading gears. The spreading seat is inverted U-shaped and rotates with the two spreading gears. A stop bar corresponding to the spreading seat is fixedly connected to the upper stamping plate, and the spreading rod is machined into an arc shape corresponding to the position of the middle support bladder.

[0015] Specifically, the upper end of the lower seat plate is provided with a support plate mechanism, which includes a support plate frame. The support plate frame includes left and right parts. The support plate frame has a slot for securing the stainless steel heat insulation cover. The upper end of the lower seat plate has a vertical sliding groove. A support rod that is slidably connected to the support frame is slidably connected in the vertical sliding groove. A lifting spring is provided in the vertical sliding groove. The upper and lower ends of the lifting spring are respectively fixedly installed on the support rod and the lower end of the vertical sliding groove.

[0016] Specifically, the pressing roller is a roller from a roll welding machine.

[0017] In addition, the present invention also provides a continuous production process for stainless steel heat shields for automotive exhaust pipes, comprising the following steps:

[0018] S1: Place the exhaust pipe into the middle support bladder, and then inject gas or liquid into the middle support column through the flow rod. The gas or liquid will enter the middle support bladder along the middle support column, and the middle support bladder will expand, ultimately supporting the exhaust pipe from the inside.

[0019] S2: Place the stainless steel heat shield on the lower stamping plate, and then move the lower stamping plate upward by the hydraulic cylinder. When the stainless steel heat shield comes into contact with the middle support bladder, the stainless steel heat shield will be pushed into the lower forming cavity. At the same time, the stainless steel heat shield will bend until the lower end of the stainless steel heat shield is completely pushed into the lower forming cavity. The lower end of the stainless steel heat shield is semi-circular.

[0020] S3: The upper end of the stainless steel heat shield is bent mechanically or manually, and then the upper stamping plate is pressed downward by a hydraulic cylinder. The upper forming cavity and the lower forming cavity of the upper stamping plate and the lower stamping plate together form a circle, so that the stainless steel heat shield is fitted onto the exhaust pipe.

[0021] Beneficial effects

[0022] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0023] I. This invention involves placing an exhaust pipe over a central support bladder, then injecting gas or liquid into the central support column via a flow rod. The gas or liquid flows along the central support column into the central support bladder, causing it to expand and ultimately support the exhaust pipe from within. The upper and lower forming cavities of the upper and lower stamping plates then form a circle, allowing a stainless steel heat shield to be fitted over the exhaust pipe. Finally, the two ends of the stainless steel heat shield are welded to the exhaust pipe. This technical solution provides comprehensive support for the interior of the exhaust pipe, effectively preventing deformation during the welding process.

[0024] Second, this invention uses a heat insulation sheet made of a high-temperature resistant material with high thermal resistance at the welding position to prevent the heat generated during welding from being conducted too quickly to the intermediate support bladder, thereby improving the durability of the intermediate support bladder. At the same time, during the process of the intermediate support bladder supporting and fixing the exhaust pipe, the intermediate support bladder will undergo a certain deformation. By sliding in the circumferential groove through the positioning pin, the heat insulation sheet has a certain ability to move around the circumference of the intermediate support bladder. This allows the heat insulation sheet to be well fixed to the intermediate support bladder according to the change of the shape of the intermediate support bladder. In this way, a heat insulation layer can be formed between the exhaust pipe and the intermediate support bladder, thereby improving the service life of the intermediate support bladder.

[0025] Third, this invention injects water into the inflow chamber through a flow rod. The water flows into the intermediate support bladder through the through hole in the inflow chamber. The water in the intermediate support bladder can also enter the outflow chamber through the through hole in the outflow chamber and flow out through the flow rod. At the same time, the outflow of water is restricted by a flow limiting valve, thereby ensuring that there is sufficient pressure in the intermediate support bladder to support the side wall of the exhaust pipe. This ensures that the liquid in the intermediate support bladder can flow effectively. When the stainless steel heat insulation cover is welded to the exhaust pipe, the heat generated by welding can be gradually carried away, so that the temperature at the weld between the exhaust pipe and the stainless steel heat insulation cover drops quickly, improving processing efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0029] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0030] Figure 4 This is a schematic diagram of the meshing of the spreading gear in this invention;

[0031] Figure 5 This is a schematic diagram of the intermediate support bladder in this invention;

[0032] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point C in the middle;

[0033] Figure 7 This is a schematic diagram of the internal structure of the intermediate support bladder in this invention;

[0034] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point D in the middle;

[0035] Figure 9 This is a cross-sectional view of the intermediate support bladder in this invention;

[0036] Figure 10 This is a schematic diagram of the support frame structure in this invention.

[0037] Reference numerals: 1. Upper seat plate; 2. Lower seat plate; 21. Vertical slide groove; 3. Guide post; 4. Lower stamping plate; 41. Lower forming cavity; 42. Pressing slide groove; 5. Upper stamping plate; 51. Upper forming cavity; 52. Stop bar; 6. Intermediate support mechanism; 61. Intermediate support post; 611. Inflow cavity; 612. Outflow cavity; 62. Intermediate support bladder; 621. Heat insulation groove; 63. Flow rod; 631. Flow channel; 64. Heat insulation mechanism; 642. Heat insulation 643. Locating pin; 644. Circumferential groove; 7. Inner support mechanism; 71. Inner support slip ring; 72. Inner support connecting rod; 73. Inner support rod; 8. Heat insulation cover pressing mechanism; 81. Pressing slider; 82. Pressing rod; 83. Pressing roller; 84. Pressing spring rod; 85. Push spring; 86. Spreading rod; 87. Spreading gear; 88. Spreading seat; 9. Support plate mechanism; 91. Support plate frame; 92. Support rod; 93. Lifting spring. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] See attached document Figures 1-10 A continuous production equipment for stainless steel heat insulation covers for automobile exhaust pipes includes an upper seat plate 1 and a lower seat plate 2. The upper seat plate 1 is disposed at the upper end of the upper seat plate 1, and a guide post 3 is fixedly connected to the upper seat plate 1 at the middle of the left and right sides of the lower seat plate 2.

[0040] The lower stamping plate 4 is slidably connected to two guide posts 3 in the vertical direction at the middle of the lower stamping plate 4, and a semi-circular lower forming cavity 41 is opened at the middle of the upper end of the lower stamping plate 4.

[0041] The upper stamping plate 5 is slidably connected to two guide posts 3 in the vertical direction at the middle of the upper stamping plate 5, and a semi-circular upper forming cavity 51 is opened at the middle of the lower end of the upper stamping plate 5.

[0042] The intermediate support mechanism 6 includes an intermediate support column 61 and an intermediate support bladder 62 communicating with the intermediate support column 61. One end of the intermediate support column 61 is fixedly connected to a flow rod 63, and the flow rod 63 is fixedly mounted between the upper seat plate 1 and the lower seat plate 2. The intermediate support column 61 is located between the upper forming cavity 51 and the lower forming cavity 41. The intermediate support bladder 62 is fixedly wrapped around the outside of the intermediate support column 61.

[0043] It should be noted that when welding the stainless steel heat shield onto the exhaust pipe, the exhaust pipe is first fitted onto the intermediate support bladder 62. Then, gas or liquid is injected into the intermediate support column 61 through the flow rod 63. The gas or liquid flows along the intermediate support column 61 into the intermediate support bladder 62, causing the intermediate support bladder 62 to expand and ultimately support the exhaust pipe from within. Afterward, the stainless steel heat shield is placed on the lower stamping plate 4, and then the lower stamping plate 4 is moved upward by a hydraulic cylinder. When the stainless steel heat shield contacts the intermediate support bladder 62, it is pushed into the lower forming cavity 41. The stainless steel heat shield will bend until the lower end of the stainless steel heat shield is completely pushed into the lower forming cavity 41. The lower end of the stainless steel heat shield is semi-circular. Then, the upper end of the stainless steel heat shield is bent mechanically or manually. Then, the upper stamping plate 5 is pressed downward by the hydraulic cylinder. The upper forming cavity 51 and the lower forming cavity 41 of the upper stamping plate 5 and the lower stamping plate 4 together form a circle, so that the stainless steel heat shield is fitted on the exhaust pipe. Then, the two ends of the stainless steel heat shield are welded to the exhaust pipe. Through the above technical solution, the interior of the exhaust pipe can be fully supported, effectively preventing the deformation of the exhaust pipe during the welding process.

[0044] Reference Figure 1 - Figure 10 The length of the intermediate support bladder 62 is greater than that of the lower stamping plate 4 and the upper stamping plate 5. Heat insulation grooves 621 are formed at both ends of the intermediate support bladder 62, extending beyond the upper stamping plate 5 and the lower stamping plate 4. Heat insulation mechanisms 64 are provided in the heat insulation grooves 621. Multiple heat insulation mechanisms 64 are evenly distributed along the circumference of the heat insulation grooves 621. Each heat insulation mechanism 64 includes a heat insulation sheet 642 and positioning pins 643. Each heat insulation mechanism 64 includes four positioning pins 643 arranged in a rectangular shape. A circumferential sliding groove 644 is formed on the heat insulation sheet 642 corresponding to each of the four positioning pins 643. The circumferential sliding grooves 644 are slidably connected along the circumference of the intermediate support bladder 62.

[0045] It should be noted that during the welding process, since the exhaust pipe is usually made of metal and has good thermal conductivity, in order to make the intermediate support bladder 62 more durable, a heat insulation sheet 642 made of a high-temperature resistant material with high thermal resistance is set at the welding position. This prevents the heat generated during the welding process from being conducted to the intermediate support bladder 62 too quickly, thereby improving the durability of the intermediate support bladder 62. At the same time, during the process of the intermediate support bladder 62 supporting and fixing the exhaust pipe, the intermediate support bladder 62 will undergo a certain deformation. Through the positioning pin 643 sliding in the circumferential groove 644, the heat insulation sheet 642 has a certain ability to move around the circumference of the intermediate support bladder 62, so that the heat insulation sheet 642 can be well fixed on the intermediate support bladder 62 according to the change of the shape of the intermediate support bladder 62.

[0046] Reference Figure 1 , Figures 5 to 9 As shown, the intermediate support column 61 has an inflow cavity 611 and an outflow cavity 612 respectively opened along its axial direction. The inflow cavity 611 has a plurality of through holes that connect the inflow cavity 611 and the intermediate support bladder 62. The outflow cavity 612 has a plurality of through holes that connect the outflow cavity 612 and the intermediate support bladder 62. The two ends of the flow rod 63 have flow channels 631 that connect the inflow cavity 611 and the outflow cavity 612 respectively. A flow limiting valve is installed at the end of the flow rod 63 that connects to the outflow cavity 612.

[0047] It should be noted that during use, water is injected into the inflow chamber 611 through the flow rod 63. The water flows into the intermediate support bladder 62 through the through hole on the inflow chamber 611. The water in the intermediate support bladder 62 can also enter the outflow chamber 612 through the through hole on the outflow chamber 612 and flow out through the flow rod 63. At the same time, the outflow of water is restricted by the flow limiting valve, thereby ensuring that there is sufficient pressure in the intermediate support bladder 62 to support the side wall of the exhaust pipe. This ensures that the liquid in the intermediate support bladder 62 can flow effectively. When the stainless steel heat insulation cover is welded to the exhaust pipe, the heat generated by welding can be gradually carried away, so that the temperature at the weld between the exhaust pipe and the stainless steel heat insulation cover drops quickly, improving processing efficiency.

[0048] Reference Figure 5 - Figure 9 An inner support mechanism 7 is provided on the intermediate support column 61. The inner support mechanism 7 includes an inner support slip ring 71, an inner support connecting rod 72, and an inner support rod 73. The inner support slip ring 71 is slidably sleeved on the intermediate support column 61. Multiple inner support slip rings 71 are evenly distributed along the axial direction of the intermediate support column 61. Multiple inner support slip rings 71 are synchronously fixedly connected together by connecting rods. Multiple inner support slip rings 71 are evenly arranged circumferentially on each inner support slip ring 71. The inner support connecting rod 72 intersects with the inner support slip ring 71. The inner wall of the intermediate support bladder 62 is fixedly connected to the inner support connecting rod 72 with the inner support rod 73. The inner support rod 73 is hinged to the other end of the inner support connecting rod 72.

[0049] It should be noted that when liquid is injected into the intermediate support bladder 62, the outer wall of the intermediate support bladder 62 gradually expands. At this time, the inner support rod 73 will drive the inner support connecting rod 72 to pull the inner support slip ring 71. Since all the inner support slip rings 71 are fixedly connected together, all the inner support slip rings 71 can move synchronously, thereby enabling all positions of the inner support rod 73 to expand synchronously. In this way, when supporting the outer wall of the exhaust pipe, the exhaust pipe can be evenly stressed.

[0050] Reference Figures 1-4The lower stamping plate 4 has a pressing groove 42 at each end. The pressing groove 42 is equipped with a heat insulation cover pressing mechanism 8. The heat insulation cover pressing mechanism 8 includes a pressing slider 81, a pressing rod 82, and a pressing roller 83. The pressing groove 42 is separated in the middle. The pressing sliders 81 are symmetrically slidably connected to both sides of the pressing groove 42. The pressing rods 82 are rotatably connected to the pressing sliders 81. The two pressing rods 82 are inclined in the direction of their opposite ends. A pressing spring rod 84 is provided between the pressing rod 82 and the pressing slider 81. The two ends of the pressing spring rod 84 are respectively hinged to the pressing rod 82 and the pressing slider 81. The end of the pressing rod 82 is rotatably connected to the pressing roller 83. A push spring 85 is provided in the pressing groove 42. The two ends of the push spring 85 are respectively fixedly installed at the ends of the pressing slider 81 and the pressing groove 42.

[0051] It should be noted that when wrapping the stainless steel heat shield around the exhaust pipe, the stainless steel heat shield can first be placed on the upper end of the pressing roller 83. When the intermediate support bladder 62 contacts the stainless steel heat shield, under the support of the pressing spring rod 84, the pressing roller 83 will press the stainless steel heat shield onto the intermediate support bladder 62. When the upper punch plate 5 moves downward, the pressing roller 83 will first press the stainless steel heat shield against the lower end of the intermediate support bladder 62, forcing the stainless steel heat shield to initially bend. When the lower end is pressed into a semi-circle in the lower forming cavity 41, the pressing slider 81 can be pushed to the position of the upper stamping plate 5 at the left and right ends of the middle support bladder 62 by the hydraulic cylinder. At this time, the two ends of the stainless steel heat insulation cover will be bent, and the upper part of the stainless steel heat insulation cover will be placed directly below the upper forming cavity 51. In this way, the upper stamping plate 5 moves downward, and the upper forming cavity 51 will press downward to bend the upper half of the stainless steel heat insulation cover into a semi-circle. In this way, the stainless steel heat insulation cover will be wrapped in a ring shape around the stainless steel heat insulation cover.

[0052] Reference Figures 1-4 Each of the two pressing sliders 81 is hinged with a spreading rod 86. The ends of the two spreading rods 86 are fixedly installed with spreading gears 87. The two spreading gears 87 mesh with each other. A spreading seat 88 is set corresponding to the two spreading gears 87. The spreading seat 88 is inverted U-shaped. The spreading seat 88 rotates with the two spreading gears 87. A stop rod 52 corresponding to the spreading seat 88 is fixedly connected to the upper stamping plate 5. The spreading rod 86 is machined into an arc shape at the position corresponding to the middle support bladder 62.

[0053] It should be noted that during the downward movement of the upper stamping plate 5, when the stop bar 52 on the upper stamping plate 5 comes into contact with the support seat 88, the support rod 86 will rotate to both sides of the lower stamping plate 4. At the same time, due to the meshing of the two support gears 87, the two support rods 86 move synchronously, and the push spring 85 is compressed. At this time, the pressing slider 81 is pushed, which will push the heat insulation cover pressing mechanism 8 to the left and right ends of the upper stamping plate 5 located in the middle support bladder 62.

[0054] Reference Figures 1-4 The upper end of the lower seat plate 2 is provided with a support plate mechanism 9. The support plate mechanism 9 includes a support plate frame 91, which includes left and right parts. The support plate frame 91 has a slot for securing the stainless steel heat insulation cover. The upper end of the lower seat plate 2 has a vertical sliding groove 21. A support rod 92 that is slidably connected to the support frame is slidably connected in the vertical sliding groove 21. A lifting spring 93 is provided in the vertical sliding groove 21. The upper and lower ends of the lifting spring 93 are respectively fixedly installed on the support rod 92 and the lower end of the vertical sliding groove 21.

[0055] It should be noted that when the stainless steel heat insulation cover is bent by the heat insulation cover pressing mechanism 8, the stainless steel heat insulation cover is placed in the slot of the support frame 91. This allows the stainless steel heat insulation cover to be placed in the middle of the exhaust pipe when it is wrapped around the exhaust pipe.

[0056] The pressing roller 83 is a roller of the roll welding machine.

[0057] It should be noted that when the pressing roller 83 presses the stainless steel heat insulation cover onto the exhaust pipe, a strong current is applied to the roller through the rolling welding machine. Due to the high resistance of stainless steel, it will melt at high temperature under the action of the high current and be welded onto the exhaust pipe under the pressing action of the pressing roller 83.

[0058] In addition, the present invention also provides a continuous production equipment for stainless steel heat shields for automotive exhaust pipes, comprising the following steps:

[0059] S1: Place the exhaust pipe on the position of the intermediate support bladder 62, and then inject gas or liquid into the intermediate support column 61 through the flow rod 63. The gas or liquid will enter the intermediate support bladder 62 along the intermediate support column 61, and the intermediate support bladder 62 will expand, ultimately supporting the exhaust pipe from the inside.

[0060] S2: Place the stainless steel heat shield on the lower stamping plate 4, and then move the lower stamping plate 4 upward by the hydraulic cylinder. When the stainless steel heat shield comes into contact with the intermediate support bladder 62, the stainless steel heat shield will be pushed into the lower forming cavity 41. At the same time, the stainless steel heat shield will bend until the lower end of the stainless steel heat shield is completely pushed into the lower forming cavity 41, and the lower end of the stainless steel heat shield is semi-circular.

[0061] S3: The upper end of the stainless steel heat shield is bent mechanically or manually, and then the upper stamping plate 5 is pressed downward by the hydraulic cylinder. The upper forming cavity 51 and the lower forming cavity 41 of the upper stamping plate 5 and the lower stamping plate 4 together form a circle, so that the stainless steel heat shield is fitted onto the exhaust pipe.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous production equipment for stainless steel heat insulation covers for automotive exhaust pipes, characterized in that, It includes an upper seat plate (1) and a lower seat plate (2). The upper seat plate (1) is located at the upper end of the upper seat plate (1), and a guide post (3) is fixedly connected to the upper seat plate (1) at the middle of the left and right sides of the lower seat plate (2). The lower stamping plate (4) is slidably connected to two guide posts (3) in the vertical direction at the middle of the lower stamping plate (4), and a semi-circular lower forming cavity (41) is opened at the middle of the upper end of the lower stamping plate (4). The upper stamping plate (5) is slidably connected to two guide posts (3) in the vertical direction at the middle of the upper stamping plate (5), and a semi-circular upper forming cavity (51) is opened at the middle of the lower end of the upper stamping plate (5). The intermediate support mechanism (6) includes an intermediate support column (61) and an intermediate support bladder (62) communicating with the intermediate support column (61). One end of the intermediate support column (61) is fixedly connected to a flow rod (63), and the flow rod (63) is fixedly mounted between the upper seat plate (1) and the lower seat plate (2). The intermediate support column (61) is located between the upper forming cavity (51) and the lower forming cavity (41). The intermediate support bladder (62) is fixedly wrapped around the outside of the intermediate support column (61). The length of the intermediate support bladder (62) is greater than that of the lower stamping plate (4) and the upper stamping plate (5). The two ends of the intermediate support bladder (62) are provided with heat insulation grooves (621) at positions extending beyond the upper stamping plate (5) and the lower stamping plate (4). A heat insulation mechanism (64) is provided in the heat insulation groove (621). Multiple heat insulation mechanisms (64) are evenly distributed along the circumference of the heat insulation groove (621). Each heat insulation mechanism (64) includes a heat insulation sheet (642) and a positioning pin (643). Each heat insulation mechanism (64) includes four positioning pins (643) arranged in a rectangle. A circumferential sliding groove (644) is provided on the heat insulation sheet (642) corresponding to each of the four positioning pins (643). The circumferential sliding groove (644) slides along the circumference of the intermediate support bladder (62). The intermediate support column (61) has an inflow cavity (611) and an outflow cavity (612) respectively opened along its axial direction. The inflow cavity (611) has a plurality of through holes that connect the inflow cavity (611) and the intermediate support bladder (62). The outflow cavity (612) has a plurality of through holes that connect the outflow cavity (612) and the intermediate support bladder (62). The two ends of the flow rod (63) have flow channels (631) that connect the inflow cavity (611) and the outflow cavity (612) respectively. A flow limiting valve is installed at the end of the flow rod (63) that connects the outflow cavity (612). An inner support mechanism (7) is provided on the intermediate support column (61). The inner support mechanism (7) includes an inner support slip ring (71), an inner support connecting rod (72), and an inner support rod (73). The inner support slip ring (71) is slidably sleeved on the intermediate support column (61). Multiple inner support slip rings (71) are evenly distributed along the axial direction of the intermediate support column (61). Multiple inner support slip rings (71) are synchronously fixed together by connecting rods. Multiple inner support slip rings (71) are evenly arranged circumferentially on each inner support slip ring (71). The inner support connecting rod (72) intersects with the inner support slip ring (71). The inner wall of the intermediate support bladder (62) is fixedly connected to the inner support connecting rod (72) with the inner support rod (73). The inner support rod (73) is hinged to the other end of the inner support connecting rod (72).

2. The continuous production equipment for stainless steel heat insulation covers for automobile exhaust pipes according to claim 1, characterized in that, A clamping groove (42) is provided at each end of the lower stamping plate (4). The clamping groove (42) is equipped with a heat insulation cover clamping mechanism (8). The heat insulation cover clamping mechanism (8) includes a clamping slider (81), a clamping rod (82), and a clamping roller (83). The clamping groove (42) is separated in the middle. The clamping sliders (81) are symmetrically slidably connected to both sides of the clamping groove (42). The clamping rods (82) are rotatably connected to the clamping sliders (81). The two clamping rods (82) are directed towards... The opposite ends are inclined. A pressure spring rod (84) is provided between the pressure rod (82) and the pressure slider (81). The two ends of the pressure spring rod (84) are respectively hinged to the pressure rod (82) and the pressure slider (81). The end of the pressure rod (82) is rotatably connected to a pressure roller (83). A push spring (85) is provided in the pressure groove (42). The two ends of the push spring (85) are respectively fixedly installed at the ends of the pressure slider (81) and the pressure groove (42).

3. The continuous production equipment for stainless steel heat insulation covers for automobile exhaust pipes according to claim 2, characterized in that, Two clamping sliders (81) are each hinged with a support rod (86). The ends of the two support rods (86) are fixedly installed with support gears (87). The two support gears (87) mesh with each other. A support seat (88) is set for each of the two support gears (87). The support seat (88) is inverted U-shaped. The support seat (88) rotates with the two support gears (87). A stop rod (52) corresponding to the support seat (88) is fixedly connected to the upper stamping plate (5). The position of the support rod (86) corresponding to the middle support bladder (62) is processed into an arc shape.

4. The continuous production equipment for stainless steel heat insulation covers for automobile exhaust pipes according to claim 3, characterized in that, The upper end of the lower seat plate (2) is provided with a support plate mechanism (9). The support plate mechanism (9) includes a support plate frame (91), which includes left and right parts. The support plate frame (91) is provided with a slot for mounting a stainless steel heat insulation cover. The upper end of the lower seat plate (2) is provided with a vertical slide groove (21). A support rod (92) that is slidably connected to the support frame is slidably connected in the vertical slide groove (21). A lifting spring (93) is provided in the vertical slide groove (21). The upper and lower ends of the lifting spring (93) are respectively fixedly installed on the lower ends of the support rod (92) and the vertical slide groove (21).

5. The continuous production equipment for stainless steel heat insulation covers for automobile exhaust pipes according to claim 4, characterized in that, The pressing roller (83) is a roller of the roll welding machine.

6. A continuous production process for a stainless steel heat shield for automotive exhaust pipes, characterized in that, This production process is applicable to the continuous production equipment for stainless steel heat shields for automotive exhaust pipes as described in any one of claims 1-5, and includes the following steps: S1: Place the exhaust pipe on the middle support bladder (62), and then inject gas or liquid into the middle support column (61) through the flow rod (63). The gas or liquid will enter the middle support bladder (62) along the middle support column (61), and the middle support bladder (62) will expand, and finally support the exhaust pipe from the inside of the exhaust pipe. S2: Place the stainless steel heat shield on the lower stamping plate (4), and then move the lower stamping plate (4) upward by the hydraulic cylinder. When the stainless steel heat shield comes into contact with the intermediate support bladder (62), the stainless steel heat shield will be pushed into the lower forming cavity (41). At the same time, the stainless steel heat shield will bend until the lower end of the stainless steel heat shield is completely pushed into the lower forming cavity (41). The lower end of the stainless steel heat shield is semi-circular. S3: The upper end of the stainless steel heat shield is bent mechanically or manually, and then the upper stamping plate (5) is pressed downward by the hydraulic cylinder. The upper forming cavity (51) and lower forming cavity (41) of the upper stamping plate (5) and the lower stamping plate (4) together form a circle, so that the stainless steel heat shield is fitted on the exhaust pipe.

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