Stainless steel corrugated pipe forming method and device for heating ventilation air conditioner

Abstract

The invention relates to the technical field of stainless steel corrugated pipe forming, in particular to a stainless steel corrugated pipe forming method and device for a heating ventilation air conditioner. The stainless steel corrugated pipe forming device comprises a machine base, a machining chamber is fixedly connected to the upper end of the machine base, material ports are formed in the two ends of the machining chamber, and a feeding mechanism, a heating chamber, an embossing mechanism and a cooling mechanism are installed in the machining chamber; the heating chamber is located between the feeding mechanism and the embossing mechanism, the cooling mechanism is located on the side, away from the feeding mechanism, of the embossing mechanism, the feeding mechanism is used for conveying pipes into the device, the heating chamber is used for heating the side walls of the pipes, and the embossing mechanism is used for corrugating the side walls of the pipes; the stainless steel pipe is heated by the heating chamber, so that the expansion coefficient of the stainless steel pipe is increased, corrugation pressing of the stainless steel pipe is facilitated, the heated stainless steel pipe is extruded by the embossing structure to form corrugations, the corrugation forming difficulty of the surface of the pipe is reduced, and the forming efficiency is improved; the device is suitable for processing long pipes.

Description

Technical Field

[0001] The present invention relates to the field of stainless steel bellows forming, and specifically to a forming method and device for stainless steel bellows used in heating, ventilation, and air conditioning (HVAC). Background Art

[0002] HVAC is a device used for heating regulation indoors or in vehicles. HVAC is usually equipped with stainless steel bellows. As a flexible pressure-resistant pipe fitting, the stainless steel bellows is used to compensate for the mutual displacement of the connection ends of pipelines or machines and equipment, absorb vibration energy, and can play roles such as vibration reduction and noise elimination. It has many characteristics such as good flexibility, light weight, corrosion resistance, fatigue resistance, and resistance to high and low temperatures. The corrugation forming of stainless steel bellows is one of the processes in bellows processing.

[0003] Existing stainless steel bellows forming devices, such as a metal bellows forming machine proposed in the patent application number "CN202122407026.6", through structures such as a frame, a first pressing cylinder, a second pressing cylinder, and a die holder, place a hollow metal pipe into the lower die module, the die holder presses downwards, and the die modules on the upper and lower die holders contact and combine. Ultra-high pressure liquid is injected into the hollow metal pipe through the high-pressure water inlet. The hollow metal pipe begins to deform in the cavity formed by the combination of die modules under the internal water pressure and the extrusion force of the two push heads, completing the forming of the metal bellows.

[0004] However, the existing technology has defects. It can only process corrugations on stainless steel pipes of a certain length. When the pipe is long, the distance between the two push heads is not sufficient to accommodate the pipe, restricting the processing length of the pipe. And it does not have the function of heating the pipe, resulting in difficult corrugation forming on the pipe surface and low forming efficiency. Therefore, a forming method and device for stainless steel bellows used in HVAC are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a forming method and device for stainless steel bellows used in HVAC to solve the problems raised in the above background art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A forming device for stainless steel bellows used in HVAC includes a machine base. A processing chamber is fixedly connected to the upper end of the machine base. Material ports are opened at both ends of the processing chamber. An feeding mechanism, a heating chamber, a corrugating mechanism, and a cooling mechanism are installed inside the processing chamber.

[0008] The heating chamber is located between the feeding mechanism and the corrugating mechanism. The cooling mechanism is located on the side of the corrugating mechanism away from the feeding mechanism. The feeding mechanism is used to convey the pipe into the device. The heating chamber is used to heat the side wall of the pipe. The corrugating mechanism is used to press corrugations on the side wall of the pipe. The cooling mechanism is used to cool the corrugated pipe.

[0009] Preferably, the embossing mechanism includes a support base fixedly connected to the upper end of the support base. A top seat is fixedly connected to the upper end of the support base. Two sets of adjusting grooves one are provided on the support base. In each of the two sets of adjusting grooves, a toothed belt pulley one is rotatably connected. An adjusting groove two is provided on the top seat. In the adjusting groove two, two sets of discs are rotatably connected. Two sets of pressing wheels are fixedly connected between the two sets of discs and the two sets of toothed belt pulleys one through bolts respectively.

[0010] The side walls of the two sets of pressing wheels are in close contact, and the side walls of the two sets of pressing wheels are both provided with pressing grooves. The cross-sectional shape of the pressing grooves is set to be semi-circular. A pressing knife for embossing the side wall of the pipe is fixedly connected to the side wall of the pressing groove.

[0011] Preferably, two sets of driving motors two are fixedly connected to the upper end of the machine base. The output ends of the two sets of driving motors two are both fixedly connected with toothed belt pulleys two. The two sets of toothed belt pulleys two are both rotatably connected to the inner wall of the support base. The two sets of toothed belt pulleys two are respectively in transmission connection with the two sets of toothed belt pulleys one.

[0012] Two sets of hydraulic cylinders are fixedly connected to the upper end of the top seat. The output ends of the two sets of hydraulic cylinders are both fixedly connected with pressing seats. Bearings are rotatably connected to the side walls of the two sets of discs. The two sets of pressing seats are respectively in pressing fit with the two sets of bearings.

[0013] Preferably, the feeding mechanism includes a bracket fixedly connected to the upper end of the machine base. A feeding cylinder is fixedly connected to one side of the bracket. A plurality of sliding frames are slidably connected to the side wall of the feeding cylinder. A driving motor one is fixedly connected to each of the plurality of sliding frames. The output end of the driving motor one is fixedly connected with a feeding roller for pushing the pipe into the device. The plurality of feeding rollers are all located in the feeding cylinder, and the plurality of feeding rollers are arranged in a circumferential array.

[0014] A plurality of fixing seats are fixedly connected to the outer side wall of the feeding cylinder. The plurality of fixing seats are arranged in a circumferential array. One ends of the plurality of sliding frames are respectively slidably connected in the plurality of fixing seats. One ends of the plurality of sliding frames located inside the fixing seats are all fixedly connected with springs for resetting. The ends of the springs are fixedly connected to the inner wall of the fixing seats. A sliding block is slidably connected in each of the plurality of fixing seats. The sliding block is in pressing fit with one end of the sliding frame.

[0015] Preferably, a connecting frame is fixedly connected to the bracket. A circular frame is rotatably connected in the connecting frame. A plurality of pressing blocks are fixedly connected to the inner wall of the circular frame. The number of the pressing blocks is the same as the number of the sliding blocks. The shapes of the pressing blocks and the sliding blocks are both set to be right-angled trapezoids. The inclined surfaces of the pressing blocks are in pressing fit with the inclined surfaces of the sliding blocks.

[0016] Preferably, a plurality of driving grooves are provided on the outer wall of the circular frame. The plurality of driving grooves are arranged in a circumferential array. A servo motor one is fixedly connected to one side of the bracket. The output end of the servo motor one is fixedly connected with a gear. The gear is in meshing transmission with the circular frame through the driving groove.

[0017] Preferably, the cooling mechanism includes a mounting frame which is hoisted on the top of the processing chamber. A cooling frame is fixedly connected to the mounting frame. A plurality of air outlets are formed in the inner wall of the cooling frame. A connecting pipe for conveying cold air is fixedly connected and communicated to the upper end of the cooling frame.

[0018] A forming method of a stainless steel bellows for a heating, ventilation and air conditioning system, the method comprising the following steps:

[0019] S1. Adjustment

[0020] Select appropriate pressing wheels according to the pipe size, symmetrically install the two pressing wheels between the support seat and the top seat, and make the side walls of the two pressing wheels closely fit.

[0021] S2. Feeding

[0022] Insert the pipe into the processing chamber from the material inlet. One end of the pipe enters the feeding mechanism. Start the first servo motor to rotate the circular frame. The pressing block on the inner wall of the circular frame squeezes the sliding block, so that the sliding frame drives the feeding roller to closely adhere to the side wall of the pipe. Stop the first servo motor. Run a plurality of first driving motors to drive the plurality of feeding rollers to continuously feed the pipe into the processing chamber.

[0023] S3. Processing

[0024] The pipe passes through the heating chamber through the feeding mechanism. The heating chamber heats the surface of the pipe. Then it enters between the two pressing rollers. Drive the two second driving motors to run. The two second driving motors indirectly drive the pressing wheels to rotate. The two pressing wheels rotate in opposite directions. The pressing knives on the side walls simultaneously squeeze the side wall of the pipe to form a bellows.

[0025] S4. Discharging

[0026] The formed bellows passes through the cooling mechanism. The cooling structure cools the bellows to solidify the surface of the bellows. Finally, it passes out through another material outlet.

[0027] Advantages of the present invention:

[0028] 1. In the present invention, the pipe is inserted by aligning it with the feeding mechanism. The feeding mechanism advances and conveys the pipe. The pipe is heated by the heating chamber and then extruded by the corrugating structure to form corrugations. Finally, it is discharged through the material outlet at the other end, which is suitable for processing long pipes.

[0029] 2. In the present invention, a heating chamber is arranged between the feeding mechanism and the corrugating mechanism. The stainless steel pipe passes through the heating chamber. The heating chamber heats the stainless steel pipe to increase the expansion coefficient of the stainless steel pipe, which facilitates the pressing of corrugations on the stainless steel pipe. The difficulty of forming the corrugations on the pipe surface is reduced, and the forming efficiency is improved.

[0030] 3. In the present invention, before the pipe is discharged, the cooling mechanism cools the pipe to solidify the surface of the bellows, which facilitates the subsequent processing and handling of the pipe and prevents personnel from being scalded. Description of the Drawings

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings;

[0032] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 is a schematic diagram of the internal structure of the processing chamber of the present invention;

[0034] Figure 3 is a schematic sectional view structure of the present invention;

[0035] Figure 4 is a schematic diagram of the feeding mechanism structure of the present invention;

[0036] Figure 5 is a schematic sectional view structure of the feeding mechanism of the present invention;

[0037] Figure 6 is a schematic diagram of the embossing mechanism structure of the present invention;

[0038] Figure 7 is a schematic diagram of the corrugated structure of the stainless steel pipe of the present invention;

[0039] The reference numerals in the drawings are as follows:

[0040] 1, machine base; 2, processing chamber; 4, material inlet; 6, feeding mechanism; 61, bracket; 611, connecting frame; 612, servo motor 1; 613, gear; 62, round frame; 621, pressing block; 622, driving groove; 63, feeding cylinder; 631, fixed seat; 632, sliding frame; 633, driving motor 1; 634, feeding roller; 635, spring; 636, sliding block; 7, heating chamber; 71, heat pipe; 8, embossing mechanism; 81, support seat; 82, top seat; 83, pressing wheel; 831, toothed belt pulley 1; 832, driving motor 2; 833, adjustment groove 1; 834, pressing groove; 835, pressing knife; 836, disc; 837, bearing; 838, adjustment groove 2; 839, toothed belt pulley 2; 84, hydraulic cylinder; 841, pressing seat; 9, cooling mechanism; 91, mounting frame; 92, cooling frame; 93, connecting pipe; 94, air outlet. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0042] A stainless steel bellows forming device for heating, ventilation and air conditioning, as Figures 1-6 , includes a machine base 1. A processing chamber 2 is fixedly connected to the upper end of the machine base 1. Material ports 4 are opened at both ends of the processing chamber 2. An feeding mechanism 6, a heating chamber 7, a corrugating mechanism 8 and a cooling mechanism 9 are installed inside the processing chamber 2;

[0043] The heating chamber 7 is located between the feeding mechanism 6 and the corrugating mechanism 8. The cooling mechanism 9 is located on the side of the corrugating mechanism 8 away from the feeding mechanism 6. The feeding mechanism 6 is used to convey the pipe to the inside of the device. The heating chamber 7 is used to heat the side wall of the pipe. The corrugating mechanism 8 is used to press corrugations on the side wall of the pipe. The cooling mechanism 9 is used to cool the corrugated pipe.

[0044] The corrugating mechanism 8 can be adjusted according to requirements to control the number of corrugation turns. The heating chamber 7 is a prior art. Heat air can be conveyed into the heating chamber 7 by a heat pipe 71, or electric heating and other methods can be used inside the heating chamber 7. The temperature inside the heating chamber 7 is relatively high, and the passing pipe can be heated. The heating chamber 7 can be installed inside the processing chamber 2 or independently installed. When installed independently, the feeding mechanism 6 and the corrugating mechanism 8 are located in two groups of processing chambers 2, but the centers of the six components of the two groups of material ports 4, feeding mechanisms 6, heating chambers 7, corrugating mechanisms 8, and cooling mechanisms 9 are always on a straight line, facilitating the stainless steel pipe to pass through.

[0045] Align the pipe and insert it into the material port 4. One end of the pipe enters the feeding mechanism 6. The feeding mechanism 6 advances to convey the pipe. The pipe passes through the heating chamber 7 for heating. The heating chamber 7 heats the stainless steel pipe, increasing the expansion coefficient of the stainless steel pipe, facilitating the pressing of corrugations on the stainless steel pipe. The heated stainless steel pipe is extruded by the corrugating structure to form corrugations (as Figure 7 shown). Before the pipe exits, the cooling mechanism 9 cools the pipe, making the surface of the bellows cool and solidify, facilitating subsequent processing and handling of the pipe, preventing personnel from being scalded. The difficulty of forming the corrugations on the pipe surface decreases, and the forming efficiency increases. It is suitable for processing long pipes. After the bellows is processed, it can be bent to facilitate installation in different spaces.

[0046] As Figure 2 , Figure 3 , Figure 6As shown in the figure, the embossing mechanism 8 includes a support base 81. The support base 81 is fixedly connected to the upper end of the support base 81. The support base 81 is located between the heating chamber 7 and the cooling mechanism 9. A top seat 82 is fixedly connected to the upper end of the support base 81. Two groups of adjustment grooves 833 are provided on the support base 81. A first toothed belt pulley 831 is rotatably connected in each of the two groups of adjustment grooves. An adjustment groove 838 is provided on the top seat 82. Two discs 836 are rotatably connected in the adjustment groove 838. A pressing wheel 83 is fixedly connected between each of the two discs 836 and the two first toothed belt pulleys 831 through bolts. The adjustment groove 833 and the adjustment groove 838 are both elliptical, facilitating the rotation of the first toothed belt pulley 831 and the disc 836. Both can rotate and slide. When sliding, the distance between the axes of the two pressing wheels 83 can be adjusted, and the first toothed belt pulley 831 and the disc 836 will not fall off.

[0047] The side walls of the two pressing wheels 83 are in close contact, and a pressing groove 834 is provided on the side wall of each of the two pressing wheels 83. The cross-sectional shape of the pressing groove 834 is set to be semi-circular, and a pressing knife 835 for embossing the side wall of the pipe is fixedly connected to the side wall of the pressing groove 834.

[0048] An appropriate pressing wheel 83 can be selected according to the stainless steel pipe. The side walls of the two pressing wheels 83 are in close contact, and the pressing grooves 834 on the two pressing wheels 83 are butted to form a circle. The stainless steel pipe passes through it. The inner wall of the pressing groove 834 matches the side wall of the stainless steel pipe. The pressing knife 835 in the groove is customized according to requirements and can be set in shapes such as semi-circular ring or inclined semi-circular ring, etc., so that various corrugations can be pressed. In this application, three pressing knives 835 are taken as a group to press three circles of corrugations on the stainless steel pipe. The three circles of corrugations are staggered. Multiple groups of pressing knives 835 are provided on one group of pressing wheels 83. When the two pressing wheels 83 rotate 180 degrees in opposite directions at the same time, the pressing knives 835 on the two pressing wheels 83 will simultaneously emboss the surface of the stainless steel pipe. While embossing, the feeding mechanism 6 continuously feeds the material, and the pipe continuously advances. Therefore, the pressing wheels 83 will press three circles of corrugations on the surface of the pipe. When processing multiple circles of corrugations, different numbers of pressing knives 835 can be customized.

[0049] As Figure 6 As shown in the figure, two driving motors 832 are fixedly connected to the upper end of the machine base 1. The output ends of the two driving motors 832 are both fixedly connected with second toothed belt pulleys 839. The two second toothed belt pulleys 839 are both rotatably connected to the inner wall of the support base 81, and are respectively connected in transmission between the two first toothed belt pulleys 831;

[0050] Two hydraulic cylinders 84 are fixedly connected to the upper end of the top seat 82. The output ends of the two hydraulic cylinders 84 are both fixedly connected with pressing seats 841. Bearings 837 are rotatably connected to the side walls of the two discs 836. The two pressing seats 841 are respectively in extrusion fit with the two bearings 837.

[0051] Two groups of drive motors two 832 (model number 110ST-M05030) drive two groups of belt pulleys two 839 to rotate. The belt pulley one 831 and the belt pulley two 839 are driven by a toothed belt, so that two groups of belt pulleys one 831 rotate. By adopting an indirect transmission method, the damage to the drive motor two 832 is reduced. After the pressure wheel 83 is installed on the belt pulley one 831 and the disc 836 through bolts, the output end of the hydraulic cylinder 84 (model number TN10-30) pushes the bearing 837 through the pressure seat 841, and the bearing 837 drives the disc 836 to move until the side walls of the two pressure wheels 83 are closely attached. The bearing 837 prevents large rotational wear between the pressure seat 841 and the disc 836.

[0052] As Figures 2-5 As shown in the figure, the feeding mechanism 6 includes a bracket 61, the bracket 61 is fixedly connected to the upper end of the machine base 1, one side of the bracket 61 is fixedly connected with a feeding cylinder 63, the side wall of the feeding cylinder 63 is slidably connected with multiple groups of sliding frames 632, and multiple groups of driving motors one 633 are fixedly connected to the multiple groups of sliding frames 632. The output end of the driving motor one 633 is fixedly connected with a feeding roller 634 for pushing the pipe into the device. The multiple groups of feeding rollers 634 are all located inside the feeding cylinder 63, and the multiple groups of feeding rollers 634 are arranged in a circumferential array.

[0053] Multiple groups of fixed seats 631 are fixedly connected to the outer side wall of the feeding cylinder 63, the multiple groups of fixed seats 631 are arranged in a circumferential array, one ends of the multiple groups of sliding frames 632 are respectively slidably connected inside the multiple groups of fixed seats 631, and one ends of the multiple groups of sliding frames 632 located inside the fixed seats 631 are all fixedly connected with springs 635 for resetting. The ends of the springs 635 are fixedly connected to the inner walls of the fixed seats 631. Multiple groups of sliding blocks 636 are slidably connected inside the multiple groups of fixed seats 631, and the sliding blocks 636 are in extrusion fit with one ends of the sliding frames 632.

[0054] The end of the stainless steel pipe is inserted into the feeding cylinder 63. The diameter of the feeding cylinder 63 is larger than the diameter of the stainless steel pipe. Control the sliding of the sliding block 636 to make the sliding block 636 extrude one end of the sliding frame 632. The spring 635 is compressed, and the sliding frame 632 drives the driving motor one 633 (model number TF-N20F) and the feeding roller 634 to closely adhere to the side wall of the stainless steel pipe. Multiple groups of feeding pipes surround the side wall of the stainless steel pipe. When multiple groups of driving motors one 633 run synchronously, control the multiple groups of feeding rollers 634 to rotate synchronously in the same direction. Due to the friction between the feeding pipe and the side wall of the pipe, a thrust will be generated on the pipe, so that the pipe is conveyed into the processing chamber 2.

[0055] When the sliding block 636 is disengaged from the extrusion, the spring 635 will restore its deformation and extrude one end of the sliding frame 632, so that the feeding roller is disengaged from the side wall of the pipe, which is convenient for feeding.

[0056] As Figures 4-5As shown, a connection frame 611 is fixedly connected to the bracket 61. A circular frame 62 is rotatably connected within the connection frame 611. A plurality of pressing blocks 621 are fixedly connected to the inner wall of the circular frame 62. The number of pressing blocks 621 is the same as the number of sliding blocks 636. The shapes of both the pressing blocks 621 and the sliding blocks 636 are set as right trapezoids. The inclined surfaces of the pressing blocks 621 are in extrusion fit with the inclined surfaces of the sliding blocks 636.

[0057] There are at least two connection frames 611 to ensure that the circular frame 62 will not fall off. When the circular frame 62 rotates, the inclined surfaces of the pressing blocks 621 on the side wall will squeeze the inclined surfaces of the sliding blocks 636, causing the sliding blocks 636 to be squeezed. Thus, the sliding blocks 636 slide within the fixed seat 631, driving the feeding roller to closely adhere to the side wall of the pipe. When the circular frame 62 rotates in the reverse direction, the pressing blocks 621 are disengaged from the extrusion with the sliding blocks 636. By controlling the forward and reverse rotation of the circular frame 62, it is possible to control whether the feeding roller closely adheres to the pipe.

[0058] As Figures 4-5 As shown, a plurality of driving grooves 622 are formed on the outer wall of the circular frame 62. The plurality of driving grooves 622 are arranged in a circumferential array. A servo motor 612 is fixedly connected to one side of the bracket 61. A gear 613 is fixedly connected to the output end of the servo motor 612. The gear 613 is in meshing transmission with the circular frame 62 through the driving grooves 622.

[0059] The servo motor 612 (model number F260) controls the rotation of the gear 613. The gear 613 is inserted into the driving grooves 622 to drive the circular frame 62 to rotate.

[0060] As Figures 2-3 As shown, the cooling mechanism 9 includes a mounting frame 91. The mounting frame 91 is hoisted at the top of the processing chamber 2. A cooling frame 92 is fixedly connected to the mounting frame 91. A plurality of air outlets 94 are formed on the inner wall of the cooling frame 92. A connecting pipe 93 for conveying cold air is fixedly connected to the upper end of the cooling frame 92.

[0061] The corrugated stainless steel pipe after embossing passes through the cooling frame 92. The connecting pipe 93 is connected to an external air cooling system. The connecting pipe 93 conveys cold air to the inside of the cooling frame 92, and then blows it to the side wall of the corrugated stainless steel pipe through a plurality of air outlets 94, so that the surface of the corrugated pipe is cooled and solidified, facilitating the subsequent processing and handling of the pipe and preventing personnel from being scalded.

[0062] A forming method for a corrugated stainless steel pipe used in a heating, ventilation, and air conditioning system, the method comprising the following steps:

[0063] S1. Adjust

[0064] Select appropriate pressing wheels 83 according to the pipe size, symmetrically install the two pressing wheels 83 between the support seat 81 and the top seat 82, and make the side walls of the two pressing wheels 83 closely fit;

[0065] S2. Feeding

[0066] Insert the pipe from the material inlet 4 into the processing chamber 2. One end of the pipe enters the feeding mechanism 6. Start the first servo motor 612 to rotate the circular frame 62. The pressing block 621 on the inner wall of the circular frame 62 squeezes the sliding block 636, so that the sliding frame 632 drives the feeding roller 634 to closely adhere to the side wall of the pipe. Stop the operation of the first servo motor 612, and operate multiple first driving motors 633, so that multiple feeding rollers 634 drive the pipe to continuously enter the processing chamber 2;

[0067] S3. Processing

[0068] The pipe passes through the heating chamber 7 through the feeding mechanism 6. The heating chamber 7 heats the surface of the pipe. Then it enters between two groups of pressure rollers. Operate two second driving motors 832. The two second driving motors 832 indirectly drive the pressure wheels 83 to rotate. The two pressure wheels 83 rotate in opposite directions. The pressing knives 835 on the side walls simultaneously squeeze the side walls of the pipe to form a corrugated pipe;

[0069] S4. Discharging

[0070] The formed corrugated pipe passes through the cooling mechanism 9. The cooling structure cools the corrugated pipe to cool and solidify the surface of the corrugated pipe, and finally it passes out through another material inlet 4.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A stainless steel bellows forming device for heating, ventilation and air conditioning, comprising a machine base (1), characterized in that, A processing chamber (2) is fixedly connected to the upper end of the machine base (1). Material inlets (4) are provided at both ends of the processing chamber (2). An inlet mechanism (6), a heating chamber (7), a corrugating mechanism (8), and a cooling mechanism (9) are installed inside the processing chamber (2). The heating chamber (7) is located between the inlet mechanism (6) and the corrugating mechanism (8). The cooling mechanism (9) is located on the side of the corrugating mechanism (8) away from the inlet mechanism (6). The inlet mechanism (6) is used to convey the pipe to the inside of the device. The heating chamber (7) is used to heat the side wall of the pipe. The corrugating mechanism (8) is used to corrugate the side wall of the pipe. The cooling mechanism (9) is used to cool the corrugated pipe.

2. The forming device for a stainless steel bellows used in a heating, ventilation and air conditioning system according to claim 1, characterized in that, The corrugating mechanism (8) includes a support base (81). The support base (81) is fixedly connected to the upper end of the support base (81). A top base (82) is fixedly connected to the upper end of the support base (81). Two groups of adjustment slots one (833) are provided on the support base (81). A toothed belt pulley one (831) is rotatably connected in each of the two groups of adjustment slots. An adjustment slot two (838) is provided on the top base (82). Two discs (836) are rotatably connected in the adjustment slot two (838). A pressing wheel (83) is fixedly connected between each of the two discs (836) and the two toothed belt pulleys one (831) by bolts. The side walls of the two pressing wheels (83) are in close contact, and pressing grooves (834) are provided on the side walls of the two pressing wheels (83). The cross-sectional shape of the pressing groove (834) is set to be semi-circular. A pressing knife (835) for corrugating the side wall of the pipe is fixedly connected to the side wall of the pressing groove (834).

3. The stainless steel bellows forming device for heating, ventilation and air conditioning according to claim 2, characterized in that, Two driving motors two (832) are fixedly connected to the upper end of the machine base (1). The output ends of the two driving motors two (832) are fixedly connected with toothed belt pulleys two (839). The two toothed belt pulleys two (839) are both rotatably connected to the inner wall of the support base (81). The two toothed belt pulleys two (839) are respectively in transmission connection with the two toothed belt pulleys one (831). Two hydraulic cylinders (84) are fixedly connected to the upper end of the top base (82). The output ends of the two hydraulic cylinders (84) are fixedly connected with pressing seats (841). Bearings (837) are rotatably connected to the side walls of the two discs (836). The two pressing seats (841) are respectively in extrusion fit with the two bearings (837).

4. The forming device for a stainless steel bellows used in a heating, ventilation and air conditioning system according to claim 1, characterized in that, The inlet mechanism (6) includes a support (61). The support (61) is fixedly connected to the upper end of the machine base (1). An inlet cylinder (63) is fixedly connected to one side of the support (61). A plurality of sliding frames (632) are slidably connected to the side wall of the inlet cylinder (63). Driving motors one (633) are fixedly connected to the plurality of sliding frames (632). The output ends of the driving motors one (633) are fixedly connected with inlet rollers (634) for pushing the pipe into the device. The plurality of inlet rollers (634) are all located inside the inlet cylinder (63), and the plurality of inlet rollers (634) are arranged in a circumferential array. A plurality of fixed seats (631) are fixedly connected to the outer side wall of the feeding cylinder (63). The plurality of fixed seats (631) are arranged in a circumferential array. One ends of a plurality of sliding frames (632) are respectively slidably connected to the plurality of fixed seats (631). Springs (635) for resetting are fixedly connected to one ends of the plurality of sliding frames (632) located inside the fixed seats (631). The ends of the springs (635) are fixedly connected to the inner walls of the fixed seats (631). Sliding blocks (636) are slidably connected inside the plurality of fixed seats (631). The sliding blocks (636) are in extrusion fit with one ends of the sliding frames (632).

5. A stainless steel bellows forming device for heating, ventilation and air conditioning according to claim 4, characterized in that, A connecting frame (611) is fixedly connected to the bracket (61). A circular frame (62) is rotatably connected inside the connecting frame (611). A plurality of pressing blocks (621) are fixedly connected to the inner wall of the circular frame (62). The number of the pressing blocks (621) is the same as the number of the sliding blocks (636). The shapes of the pressing blocks (621) and the sliding blocks (636) are both set as right trapezoids. The inclined surfaces of the pressing blocks (621) are in extrusion fit with the inclined surfaces of the sliding blocks (636).

6. The forming device of the stainless steel corrugated pipe for the heating, ventilation and air conditioning according to claim 5, characterized in that, A plurality of driving grooves (622) are formed in the outer wall of the circular frame (62). The plurality of driving grooves (622) are arranged in a circumferential array. A servo motor one (612) is fixedly connected to one side of the bracket (61). A gear (613) is fixedly connected to the output end of the servo motor one (612). The gear (613) is in meshing transmission with the circular frame (62) through the driving groove (622).

7. A stainless steel bellows forming device for a heating, ventilation and air conditioning system according to claim 1, characterized in that, The cooling mechanism (9) includes a mounting frame (91). The mounting frame (91) is hoisted at the top of the processing chamber (2). A cooling frame (92) is fixedly connected to the mounting frame (91). A plurality of air outlets (94) are formed in the inner wall of the cooling frame (92). A connecting pipe (93) for conveying cold air is fixedly connected and communicated to the upper end of the cooling frame (92).

8. A forming method of a stainless steel corrugated pipe for heating, ventilation and air conditioning, using the forming device of the stainless steel corrugated pipe for heating, ventilation and air conditioning according to any one of claims 1-7 to form the stainless steel corrugated pipe, characterized in that, The method includes the following steps: S1. Adjustment Select appropriate pressing wheels (83) according to the pipe size. Symmetrically install the two pressing wheels (83) between the supporting seat (81) and the top seat (82), and make the side walls of the two pressing wheels (83) closely fit together; S2. Feeding Insert the pipe into the processing chamber (2) from the material inlet (4). One end of the pipe enters the feeding mechanism (6). Start the servo motor one (612) to rotate the circular frame (62). The pressing blocks (621) on the inner wall of the circular frame (62) squeeze the sliding blocks (636) to make the sliding frames (632) drive the feeding rollers (634) to closely adhere to the side wall of the pipe. Stop the operation of the servo motor one (612). Operate a plurality of driving motors one (633) to make the plurality of feeding rollers (634) drive the pipe to continuously enter the processing chamber (2); S3. Processing The pipe passes through the heating chamber (7) through the feeding mechanism (6). The heating chamber (7) heats the surface of the pipe. Then it enters between the two pressing rollers. Operate the two driving motors two (832). The two driving motors two (832) indirectly drive the pressing wheels (83) to rotate. The two pressing wheels (83) rotate in opposite directions. The pressing knives (835) on the side walls simultaneously squeeze the side wall of the pipe to form a corrugated pipe; S4. Discharging The formed corrugated pipe passes through the cooling mechanism (9). The cooling structure cools the corrugated pipe to make the surface of the corrugated pipe cool and solidify. Finally, it passes out through another material inlet (4).

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