Corrugated pipe straightening equipment controlled by microcomputer

Abstract

The invention discloses corrugated pipe straightening equipment controlled by a microcomputer, and relates to the field of metal pipe fitting machining. The device comprises a supporting base, a lower module assembly, a push-pull air cylinder, a pressing plate, an upper module assembly, a downward pressing air cylinder and a microcomputer controller. The lower module assembly comprises a first lower module and a second lower module, a push-pull plate is fixed on the second lower module, a first limiting insertion plate and a first straightening insertion plate are respectively arranged on the first lower module and the second lower module, and a forming core rod is arranged on the second lower module; the output end of a piston rod of the push-pull cylinder is connected with the push-pull plate; the pressing plate is arranged above the supporting seat; the upper module assembly comprises a first upper module and a second upper module, and the first upper module and the second upper module are provided with a second limiting insertion plate and a second straightening insertion plate correspondingly. The piston rod output end of the pressing cylinder is connected with the pressing plate. The corrugated pipe end straightening device can automatically straighten the end of a corrugated pipe, it is guaranteed that the end of the corrugated pipe forms a smooth and tight-butt-joint matching face, and the area of the matching face is increased.

Description

Technical Field

[0001] This invention relates to the field of metal pipe processing, and in particular to a microcomputer-controlled corrugated pipe straightening device. Background Technology

[0002] When assembling joints, flanges, and other components at the ends of stainless steel corrugated pipes, welding is required to achieve reliable connections and ensure sealing performance. Currently, the conventional welding process for stainless steel corrugated pipes is laser welding. However, laser welding has the following drawbacks: Laser welding uses a high-energy beam for focused heating, and the high temperature can easily cause localized overheating of the corrugated pipe, leading to problems such as out-of-roundness and corrugation distortion in thin-walled corrugated pipes; Laser welding requires high precision in component assembly, necessitating a tight fit between the corrugated pipe ends and joints, flanges, and other components; Laser welding involves locally melting the base material to form a molten pool, which is then directly bonded after cooling, altering the microstructure of the base material and causing that area to become brittle, becoming a potential crack initiation point and a weak point in performance.

[0003] Compared to laser welding, brazing, another welding process, has the following advantages: Brazing requires heating the entire workpiece or a large area to the melting temperature of the brazing filler metal, resulting in uniform heating and cooling of the entire workpiece with a small temperature difference, and excellent preservation of the waveform and dimensions of thin-walled corrugated pipes; Brazing relies on capillary action to fill gaps, making the requirements for part machining and assembly precision relatively relaxed; The welding temperature is lower than the melting point of stainless steel, so it will not melt the base material, preserving the elasticity and fatigue performance of the corrugated pipe body. However, because stainless steel corrugated pipes are corrugated, the welding mating surface at its ends is uneven, consisting of a narrow annular contact surface with a small welding area. This leads to insufficient stability of the welded area and inadequate connection strength during the brazing process. To ensure welding reliability, it is necessary to straighten the ends of the corrugated pipe to ensure a flat, tightly mating surface and increase the mating surface area. Therefore, it is necessary to provide a microcomputer-controlled corrugated pipe straightening device. Summary of the Invention

[0004] The technical problem solved by the present invention is to address the deficiencies in the prior art by providing a microcomputer-controlled bellows straightening device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a microcomputer-controlled corrugated pipe straightening device, comprising a support base, a lower module assembly, a push-pull cylinder, a pressure plate, an upper module assembly, a lower pressure cylinder, and a microcomputer controller; the lower module assembly includes a first lower module and a second lower module arranged side by side, the first lower module being fixed to the top of the support base, and the second lower module being movably connected to the top of the support base, wherein a push-pull plate is fixed on the side of the second lower module away from the first lower module; the first lower module and the second lower module are respectively provided with a first limiting insert plate and a first straightening insert plate for insertion into the corrugated pipe product's outer wall trough; a forming mandrel for insertion into the inner cavity of the corrugated pipe product is provided on the second lower module above the first straightening insert plate; the piston rod output end of the push-pull cylinder is connected to the push-pull plate, and is used to drive the push-pull plate. The second lower module and the forming mandrel move left and right; the pressure plate is movable up and down above the support base; the upper module assembly includes a first upper module and a second upper module respectively located above the first lower module and the second lower module. The first upper module is fixedly connected to the bottom of the pressure plate, and the second upper module is movable left and right and connected to the bottom of the pressure plate. The second upper module is provided with a pull connector that can be connected to the push-pull plate. The first upper module and the second upper module are respectively provided with a second limiting plate and a second straightening plate for insertion into the trough of the outer wall of the corrugated pipe product; the piston rod output end of the pressing cylinder is connected to the pressure plate, which is used to drive the pressure plate to move the upper module assembly up and down to perform mold opening or closing actions; both the push-pull cylinder and the pressing cylinder are connected to solenoid valves through air pipes, and the microcomputer controller is connected to the solenoid valves through wires.

[0006] As a further explanation of the above technical solution:

[0007] In the above technical solution, the top of the first lower module and the second lower module are respectively provided with a first lower model cavity and a second lower model cavity with a semi-circular cross-section, and the first lower model cavity and the second lower model cavity are coaxially arranged; the bottom of the first upper module and the second upper module are respectively provided with a first upper model cavity and a second upper model cavity with a semi-circular cross-section, and the first upper model cavity and the second upper model cavity are coaxially arranged.

[0008] In the above technical solution, the first limiting plate and the first straightening plate are fixedly connected to the first lower module and the second lower module, respectively. The first limiting plate and the first straightening plate protrude upward from the inner walls of the first lower mold cavity and the second lower mold cavity, respectively. The upper edges of the first limiting plate and the first straightening plate are respectively provided with a first arc-shaped notch and a second arc-shaped notch coaxial with the first lower mold cavity and the second lower mold cavity, respectively. The second limiting plate and the second straightening plate are fixedly connected to the first upper module and the second upper module, respectively. The second limiting plate and the second straightening plate protrude downward from the inner walls of the first upper mold cavity and the second upper mold cavity, respectively. The lower edges of the second limiting plate and the second straightening plate are respectively provided with a third arc-shaped notch and a fourth arc-shaped notch coaxial with the first upper mold cavity and the second upper mold cavity, respectively.

[0009] In the above technical solution, the second lower module is provided with a vertical through hole and an elastic lifting seat. The elastic lifting seat includes a lifting slider, a clamping sleeve, a fastening screw and a spring. The lifting slider is slidably connected to the vertical through hole. The lifting slider is provided with a connecting through hole. The axis of the connecting through hole is parallel to the axis of the second lower mold cavity. The clamping sleeve passes through the connecting through hole. One side of the clamping sleeve is provided with an axial slit. The fastening screw is threadedly connected to the top of the lifting slider, and the rod of the fastening screw is pressed against the upper part of the clamping sleeve. One end of the spring abuts against the support seat, and the other end abuts against the lifting slider. The push-pull plate is provided with a screw hole. The piston rod output end of the push-pull cylinder is threadedly connected to the screw hole. The forming mandrel passes through the clamping sleeve and is located directly above the second lower mold cavity. One end of the forming mandrel extends into the screw hole, and the other end is tapered and set away from the push-pull plate.

[0010] In the above technical solution, the pull connector is a bolt, which is horizontally set and threadedly connected to the side of the second upper module away from the first upper module; the height of the push-pull plate is higher than that of the second upper module, and the top of the push-pull plate is provided with a connecting groove that matches the rod of the pull connector. When the upper module assembly and the lower module assembly are molded together, the rod of the pull connector is inserted into the connecting groove.

[0011] In the above technical solution, multiple guide columns are vertically and fixedly connected on the support base, and a pressure plate is arranged parallel above the support base. Multiple linear ball bearings that match the guide columns are installed on the pressure plate. The linear ball bearings are fitted on the guide columns and slide in cooperation with the guide columns.

[0012] In the above technical solution, a first connecting slider is integrally provided on the bottom front and rear sides of the second lower module along the length direction. A first L-shaped stop block matching the first connecting slider is installed on the support base on the front and rear sides of the second lower module along the length direction. The first connecting slider and the first L-shaped stop block are slidably engaged. A second connecting slider is integrally provided on the top front and rear sides of the second upper module along the length direction. A second L-shaped stop block matching the second connecting slider is fixedly connected on the pressure plate on the front and rear sides of the second upper module along the length direction. The second connecting slider and the second L-shaped stop block are slidably engaged.

[0013] In the above technical solution, a first guide pin is installed on the first upper module, extending downward from the lower end of the first upper module, and a first guide hole matching the first guide pin is provided on the first lower module; a second guide pin is installed on the second upper module, extending downward from the lower end of the second upper module, and a second guide hole matching the second guide pin is provided on the second lower module.

[0014] In the above technical solution, the pressing cylinder includes a first pressing cylinder and a second pressing cylinder. Both the first pressing cylinder and the second pressing cylinder are dual-shaft cylinders. The first pressing cylinder and the second pressing cylinder are respectively vertically installed on the front and rear sides of the support base. The piston rod output end of the first pressing cylinder is equipped with a first connecting plate, and the piston rod output end of the second pressing cylinder is equipped with a second connecting plate. The first connecting plate and the second connecting plate are fixedly connected to the pressure plate.

[0015] In the above technical solution, a mounting plate is fixedly connected to the support base on the outside of the second lower module; the push-pull cylinder is a standard cylinder with adjustable stroke, the push-pull cylinder is horizontally fixedly connected to the mounting plate, multiple fixing columns are fixedly connected between the front end of the cylinder body of the push-pull cylinder and the mounting plate, and a support plate is vertically fixedly connected to the rear end of the cylinder body of the push-pull cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The pressure plate driven by the downward-pressing cylinder moves the upper module assembly automatically downward, causing the upper and lower module assemblies to close. The first limiting plate and the first straightening plate on the first and second lower modules are inserted into the outer wall trough of the lower half of the corrugated pipe product. The second limiting plate and the second straightening plate on the first and second upper modules are inserted into the outer wall trough of the upper half of the corrugated pipe product, fixing the corrugated pipe product in the cavity between the upper and lower module assemblies. The push-pull plate driven by the push-pull cylinder moves automatically to the right, simultaneously pulling the second lower module and the second upper module to the right, thus... The first straightening plate, the second straightening plate, and the forming mandrel move to the right. Under the friction of the first straightening plate, the second straightening plate, and the forming mandrel, the end wall of the corrugated pipe is straightened from a corrugated shape into a smooth straight pipe shape, forming a flat and tightly fitted mating surface. This eliminates the uneven gap caused by the corrugations and meets the requirements of the welding process for assembly gaps. During welding, the end of the straight pipe presents a wide mating surface, and the length of the mating surface is increased several times, increasing the welding area and making the welding area more stable. It can withstand greater pressure and stress, improve the connection strength, and ensure welding reliability.

[0018] 2. Both the push-pull cylinder and the pressing cylinder are connected to solenoid valves via air pipes. The microcomputer controller is connected to the solenoid valves via wires. The microcomputer controller receives the start signal and executes the preset program. The microcomputer controller can control the pressing cylinder and the push-pull cylinder to perform corresponding actions, thereby realizing the opening and closing actions of the upper module component and the lower module component, as well as the straightening action of the first straightening insert plate, the second straightening insert plate and the forming mandrel on the corrugated pipe product, and can automatically straighten the end of the corrugated pipe product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is an exploded structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the lower module component in this invention;

[0022] Figure 4 This is a schematic diagram of the upper module component in this invention;

[0023] Figure 5 This is a schematic diagram of the connection structure of the elastic lifting seat in this invention;

[0024] Figure 6 This is a cross-sectional view of the present invention when the upper module component and the lower module component are molded;

[0025] Figure 7 This is a cross-sectional view of the present invention when the upper module component and the lower module component are molded together.

[0026] In the diagram: 1. Support base; 11. Base plate; 111. First L-shaped stop; 12. Support block; 2. Lower module assembly; 21. First lower module; 211. First lower model cavity; 212. First guide hole; 22. Second lower module; 221. Second lower model cavity; 222. Second guide hole; 223. First connecting slider; 3. Push-pull cylinder; 31. Fixed column; 32. Support plate; 4. Pressure plate; 41. Second L-shaped stop; 5. Upper module assembly; 51. First upper module; 511. First upper model cavity; 512. First guide pin; 52. Second upper module; 521. Second upper model cavity; 522. Second guide pin; 523. 6. Second connecting slider; 7. Pressing cylinder; 8. First pressing cylinder; 9. First connecting plate; 10. Second pressing cylinder; 11. Second connecting plate; 12. Push-pull plate; 13. Screw hole; 14. Connecting groove; 15. First limiting insert plate; 16. First straightening insert plate; 27. Forming mandrel; 28. Pulling connector; 39. Second limiting insert plate; 40. Second straightening insert plate; 50. Vertical through hole; 61. Elastic lifting seat; 62. Lifting slider; 63. Clamping sleeve; 64. Slit; 65. Fastening screw; 66. Spring; 70. Guide post; 80. Linear ball bearing; 90. Mounting plate; 100. Corrugated pipe product. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] like Figure 1-7 As shown, the microcomputer-controlled bellows straightening device of this embodiment includes a support base 1, a lower module assembly 2, a push-pull cylinder 3, a pressure plate 4, an upper module assembly 5, a lower pressure cylinder 6, and a microcomputer controller.

[0030] The support base 1 includes a base plate 11 and two support blocks 12. The base plate 11 is horizontally positioned, and the two support blocks 12 are vertically fixed to both sides of the bottom of the base plate 11. The base plate 11 is made of high-strength material, and the support blocks 12 provide stable support. The lower module assembly 2 includes a first lower module 21 and a second lower module 22 arranged side by side. The first lower module 21 is fixed to the top of the support base 1, and the second lower module 22 is movably connected to the top of the support base 1. A push-pull plate 7 is fixed to the side of the second lower module 22 away from the first lower module 21. The first lower module 21 and the second lower module 22 are respectively provided with a first limiting insert plate 8 and a first straightening insert plate 9 for insertion into the corrugated trough of the outer wall of the corrugated pipe product 100. The second lower module 22 is provided with a forming mandrel 10 for insertion into the inner cavity of the corrugated pipe product 100 above the first straightening insert plate 9. The piston rod output end of the push-pull cylinder 3 is connected to the push-pull plate 7, which is used to drive the push-pull plate 7 to move the second lower module 22 and the forming mandrel 10 in the left and right direction. The pressure plate 4 is movably disposed above the support base 1. The upper module assembly 5 includes respectively The first upper module 51 and the second upper module 52 are respectively located above the first lower module 21 and the second lower module 22. The first upper module 51 is fixedly connected to the bottom of the pressure plate 4, and the second upper module 52 is movably connected to the bottom of the pressure plate 4. The second upper module 52 is provided with a pull connector 20 that can be connected to the push-pull plate 7. The first upper module 51 and the second upper module 52 are respectively provided with a second limiting insert plate 30 and a second straightening insert plate 40 for insertion into the corrugated trough of the outer wall of the corrugated pipe product 100. The piston rod output end of the pressing cylinder 6 is connected to the pressure plate 4. It is used to drive the pressure plate 4 to move the upper module assembly 5 in the vertical direction to perform mold opening or closing actions. Both the push-pull cylinder 3 and the pressing cylinder 6 are connected to solenoid valves via air pipes. The microcomputer controller is connected to the solenoid valves via wires. The microcomputer controller receives the start signal, executes the preset program, and outputs an electrical signal to the solenoid valve, energizing the control coil and driving the valve core inside the solenoid valve to switch positions. The solenoid valve switches the air path, directing compressed air from the air source to the corresponding chambers of the push-pull cylinder 3 and the pressing cylinder 6, pushing the piston to move (extend or retract). The microcomputer controller has built-in high-precision sensors and intelligent algorithms. During the straightening process of the corrugated pipe product 100, it can monitor and adjust the force changes of the push-pull cylinder 3 in real time to ensure that the straightening length of the corrugated pipe product 100 strictly conforms to the preset parameters, avoiding damage to the corrugated pipe product 100 material due to overstretching and preventing loose connections caused by insufficient stretching. The microcomputer control system has data recording and analysis functions, capable of tracking the specific parameters of each straightening operation.

[0031] The working process of this invention is as follows:

[0032] First, the corrugated pipe product 100 is fitted onto the front end of the forming mandrel 10. The forming mandrel 10 is inserted into the inner cavity of the corrugated pipe to provide roundness support. The downward pressure cylinder 6 drives the pressure plate 4 to move the upper module assembly 5 downward until the upper module assembly 5 and the lower module assembly 2 are closed. During mold closing, the first limiting plate 8 and the first straightening plate 9 on the first lower module 21 and the second lower module 22 are inserted into the outer wall trough of the lower half of the corrugated pipe product 100. The first upper module 51 and the second upper module 5... The second limiting insert 30 and the second straightening insert 40 on the second upper module 52 are inserted into the outer wall trough of the upper half of the corrugated pipe product 100, fixing the corrugated pipe product 100 in the cavity between the upper module assembly 5 and the lower module assembly 2. At this time, the pull connector 20 on the second upper module 52 is connected to the push-pull plate 7. Then, the push-pull cylinder 3 drives the push-pull plate 7 to move to the right. Since the push-pull plate 7 is fixedly connected to the second lower module 22, the pull connector 20 on the second upper module 52 and the push-pull plate 7 are connected. When connected, the push-pull plate 7 can simultaneously pull the second lower module 22 and the second upper module 52 to the right, causing the first straightening insert plate 9, the second straightening insert plate 40, and the forming mandrel 10 to move to the right, while the first lower module 21 and the first upper module 51 remain fixed, and the first limiting insert plate 8 and the second limiting insert plate 30 remain fixed, used to limit the corrugated pipe product 100. During the process of the first straightening insert plate 9, the second straightening insert plate 40, and the forming mandrel 10 moving to the right, the corrugated pipe... The front end of product 100 (i.e., the end into which the forming mandrel 10 is first inserted) is straightened from a corrugated tube shape into a smooth straight tube shape under the friction of the first straightening insert 9, the second straightening insert 40 and the forming mandrel 10. Finally, the lowering cylinder 6 drives the pressure plate 4 to move the upper module assembly 5 upward. The upper module assembly 5 and the lower module assembly 2 open the mold, and the straightened end of the corrugated tube product 100 can form a flat and tightly mating surface, which meets the requirements of the welding process for the assembly gap.

[0033] The corrugated pipe product 100 processed by the straightening equipment of the present invention can be welded using a brazing process. Compared with the conventional laser welding process, the brazing process has a welding temperature lower than the melting point of stainless steel, which will not melt the base material and avoid the risk of burn-through and deformation of the thin-walled corrugated pipe product 100. The brazing filler metal fills the gap by capillary action, which is more adaptable to small gaps. Even if there is a slight misalignment after straightening, the flow of the brazing filler metal can achieve a full circumference seal, ensuring welding reliability.

[0034] In this embodiment, reference Figure 3-5The first lower module 21 and the second lower module 22 are respectively provided with a first lower mold cavity 211 and a second lower mold cavity 221 with a semi-circular cross-section at their top. The first lower mold cavity 211 and the second lower mold cavity 221 are coaxially arranged. When the mold is closed, the first lower mold cavity 211 and the second lower mold cavity 221 are used to accommodate the lower half of the corrugated pipe product 100. The first upper module 51 and the second upper module 52 are respectively provided with a first upper mold cavity 511 and a second upper mold cavity 521 with a semi-circular cross-section at their bottom. The first upper mold cavity 511 and the second upper mold cavity 521 are coaxially arranged. When the mold is closed, the first upper mold cavity 511 and the second upper mold cavity 521 are used to accommodate the upper half of the corrugated pipe product 100.

[0035] Furthermore, the first limiting plate 8 and the first straightening plate 9 are respectively fixedly connected to the first lower module 21 and the second lower module 22. The first limiting plate 8 and the first straightening plate 9 protrude upward from the inner walls of the first lower mold cavity 211 and the second lower mold cavity 221, respectively. The upper edges of the first limiting plate 8 and the first straightening plate 9 are respectively provided with a first arc-shaped notch and a second arc-shaped notch coaxial with the first lower mold cavity 211 and the second lower mold cavity 221. By setting the first arc-shaped notch and the second arc-shaped notch, the first limiting plate 8 and the first straightening plate 9 are adapted to the outer wall trough of the lower half of the corrugated pipe product 100. The second limiting plate 30 and the second straightening plate 40 are fixedly connected to the first upper module 51 and the second upper module 52, respectively. The second limiting plate 30 and the second straightening plate 40 protrude downward from the inner walls of the first upper mold cavity 511 and the second upper mold cavity 521, respectively. The lower edges of the second limiting plate 30 and the second straightening plate 40 are respectively provided with a third arc-shaped notch and a fourth arc-shaped notch coaxial with the first upper mold cavity 511 and the second upper mold cavity 521. By setting the third arc-shaped notch and the fourth arc-shaped notch, the second limiting plate 30 and the second straightening plate 40 are adapted to the outer wall trough of the upper half of the corrugated pipe product 100.

[0036] Furthermore, the second lower module 22 is provided with a vertical through hole 50 and an elastic lifting seat 60. The elastic lifting seat 60 includes a lifting slider 601, a clamping sleeve 602, a fastening screw 603, and a spring 604. The lifting slider 601 is slidably connected to the vertical through hole 50. The lifting slider 601 is provided with a connecting through hole, the axis of which is parallel to the axis of the second lower model cavity 221. The clamping sleeve 602 passes through the connecting through hole. One side of the clamping sleeve 602 is provided with an axial slit 6021. The fastening screw 603 is screwed into the connecting through hole. The spring 604 is connected to the top of the lifting slider 601, and the rod of the fastening screw 603 is pressed against the upper part of the clamping sleeve 602. One end of the spring 604 abuts against the support seat 1, and the other end abuts against the lifting slider 601. The push-pull plate 7 is provided with a screw hole 71, and the piston rod output end of the push-pull cylinder 3 is threadedly connected to the screw hole 71. The forming mandrel 10 passes through the clamping sleeve 602 and is located directly above the second lower mold cavity 221. One end of the forming mandrel 10 extends into the screw hole 71, and the other end is tapered and set away from the push-pull plate 7. It should be noted that by setting the elastic lifting seat 60, the molding mandrel 10 can move vertically on the second lower module 22. Before loading, the upper module assembly 5 and the lower module assembly 2 are in the open mold state. At this time, the upper module assembly 5 and the lower module assembly 2 are separated. The spring 604 pushes the lifting slider 601 upward due to the elastic force, thereby driving the molding mandrel 10 to rise, so that the molding mandrel 10 is spaced a certain distance from the first limiting plate 8 and the first straightening plate 9, which makes it convenient for the operator to put the corrugated pipe product 100 into the molding mandrel 10. After loading is completed, when the upper module component 5 and the lower module component 2 close the mold, the upper module component 5 moves downward, pushing the corrugated pipe product 100 and the forming mandrel 10 downward until the upper module component 5 and the lower module component 2 are closed. At this time, the lifting slider 601 descends and the spring 604 is compressed. After the straightening operation of the corrugated pipe product 100 is completed, the upper module component 5 moves upward. Similarly, the corrugated pipe product 100 and the forming mandrel 10 move upward under the elastic force of the spring 604 through the lifting slider 601, which makes it convenient for the operator to unload the corrugated pipe product 100.

[0037] Optionally, refer to Figure 3-4The pull connector 20 is a bolt. The pull connector 20 is horizontally set and threadedly connected to the second upper module 52 on the side away from the first upper module 51. The height of the push-pull plate 7 is higher than that of the second upper module 52. The top of the push-pull plate 7 is provided with a connecting groove 72 that matches the rod of the pull connector 20. It should be noted that when the upper module assembly 5 and the lower module assembly 2 are molded together, the rod of the pull connector 20 is inserted into the connecting groove 72, while the head of the pull connector 20 is located outside the end of the connecting groove 72. The diameter of the head of the pull connector 20 is larger than the width of the connecting groove 72. When the push-pull cylinder 3 drives the push-pull plate 7 to move to the right, the head of the pull connector 20 abuts against the end of the connecting groove 72, and the push-pull plate 7 can drive the pull connector 20 to move to the right, thereby realizing that the second lower module 22 and the second upper module 52 move to the right synchronously. When the push-pull cylinder 3 drives the push-pull plate 7 to move to the left, since the height of the push-pull plate 7 is higher than that of the second upper module 52, the push-pull plate 7 can push the second upper module 52 to the left, thereby realizing that the second lower module 22 and the second upper module 52 move to the left synchronously.

[0038] In this embodiment, reference Figure 2 Multiple guide pillars 70 are vertically and fixedly connected to the support base 1. Optionally, four guide pillars 70 are provided. The pressure plate 4 is parallel to the support base 1 and is mounted on the pressure plate 4. Multiple linear ball bearings 80 that match the guide pillars 70 are installed on the pressure plate 4. Optionally, four linear ball bearings 80 are provided. The linear ball bearings 80 are fitted onto the guide pillars 70 and slide in cooperation with them. The guide pillars 70, with their precise straightness and good rigidity, provide accurate guidance for the movement of the pressure plate 4. When the pressing cylinder 6 performs the pressing action, the guide pillars 70 can effectively limit the movement trajectory of the pressing cylinder 6, thereby ensuring that the bellows product 100 can move in the predetermined direction and position during processing, improving the accuracy and stability of processing. The surface of the guide pillars 70 is specially treated, with good wear resistance and corrosion resistance, which can maintain stable performance during long-term use and reduce guiding errors caused by wear or corrosion.

[0039] In this embodiment, reference Figure 3-4The bottom front and rear sides of the second lower module 22 are integrally provided with a first connecting slider 223 along the length direction. The support base 1 is installed on the front and rear sides of the second lower module 22 along the length direction with a first L-shaped stop 111 that matches the first connecting slider 223. The first connecting slider 223 and the first L-shaped stop 111 slide in cooperation to ensure the movement accuracy of the first connecting slider 223 and prevent it from deviating. The top front and rear sides of the second upper module 52 are integrally provided with a second connecting slider 523 along the length direction. The pressure plate 4 is fixedly connected on the front and rear sides of the second upper module 52 with a second L-shaped stop 41 that matches the second connecting slider 523. The second connecting slider 523 and the second L-shaped stop 41 slide in cooperation to ensure the movement accuracy of the second connecting slider 523 and prevent it from deviating.

[0040] In this embodiment, reference Figure 4-5 The first upper module 51 is equipped with a vertically arranged first guide pin 512, which extends downward from the lower end of the first upper module 51. The first lower module 21 is provided with a first guide hole 212 that matches the first guide pin 512. The second upper module 52 is equipped with a vertically arranged second guide pin 522, which extends downward from the lower end of the second upper module 52. The length of the second guide pin 522 is longer than that of the first guide pin 512. The second lower module 22 is provided with a second guide hole 222 that matches the second guide pin 522. When the upper module assembly 5 and the lower module assembly 2 are molded together, the first guide pin 512 is inserted into the first guide hole 212, and the second guide pin 522 is inserted into the second guide hole 222, thereby improving the mold-closing accuracy of the upper module assembly 5 and the lower module assembly 2.

[0041] In this embodiment, reference Figure 2 The pressing cylinder 6 includes a first pressing cylinder 61 and a second pressing cylinder 62. Both the first pressing cylinder 61 and the second pressing cylinder 62 are dual-shaft cylinders. The first pressing cylinder 61 and the second pressing cylinder 62 are vertically installed on the front and rear sides of the support base 1, respectively. A first connecting plate 611 is installed at the piston rod output end of the first pressing cylinder 61, and a second connecting plate 621 is installed at the piston rod output end of the second pressing cylinder 62. The first connecting plate 611 and the second connecting plate 621 are fixedly connected to the pressure plate 4. The pressing cylinder 6 is powered by a pneumatic system, which can precisely control the pressing force and speed. During operation, the pressing cylinder 6 drives the pressure plate 4 to drive the upper module assembly 5 to perform a stable pressing operation on the corrugated pipe product 100 according to a preset program, ensuring that the corrugated pipe product 100 remains flat and stable during the straightening process, providing a strong guarantee for the smooth implementation of the brazing process. In addition, the first pressing cylinder 61 and the second pressing cylinder 62 work together to further enhance the smoothness and reliability of the pressing action.

[0042] In this embodiment, reference Figure 1-2A mounting plate 90 is fixedly connected to the support base 1 on the outside of the second lower module 22. The push-pull cylinder 3 is a standard cylinder with adjustable stroke. The push-pull cylinder 3 is horizontally fixedly connected to the mounting plate 90. Multiple fixing columns 31 are fixedly connected between the front end of the cylinder body of the push-pull cylinder 3 and the mounting plate 90. The rear end of the cylinder body of the push-pull cylinder 3 is vertically fixedly connected to the support plate 32. The push-pull cylinder 3 is also driven by a pneumatic system and has high-precision position control capability. It can accurately drive the push-pull plate 7 to move the second lower module 22 and the second upper module 52 according to production needs.

[0043] The above does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the technical scope of the present invention.

Claims

1. A microcomputer-controlled corrugated pipe straightening device, characterized in that: It includes a support base, a lower module assembly, a push-pull cylinder, a pressure plate, an upper module assembly, a lower pressure cylinder, and a microcomputer controller; The lower module assembly includes a first lower module and a second lower module arranged side by side. The first lower module is fixed to the top of the support base, and the second lower module is movably connected to the top of the support base. A push-pull plate is fixed on the side of the second lower module away from the first lower module. The first lower module and the second lower module are respectively provided with a first limiting plate and a first straightening plate for insertion into the trough of the outer wall of the corrugated pipe product. A forming mandrel for insertion into the inner cavity of the corrugated pipe product is provided on the second lower module above the first straightening plate. The piston rod output end of the push-pull cylinder is connected to the push-pull plate, which is used to drive the push-pull plate to move the second lower module and the forming mandrel in the left and right directions. The pressure plate is movable up and down and is positioned above the support base; The upper module assembly includes a first upper module and a second upper module respectively located above the first lower module and the second lower module. The first upper module is fixedly connected to the bottom of the pressure plate, and the second upper module is movably connected to the bottom of the pressure plate. The second upper module is provided with a pull connector that can be connected to a push-pull plate. The first upper module and the second upper module are respectively provided with a second limiting insert plate and a second straightening insert plate for insertion into the trough of the outer wall of the corrugated pipe product. The piston rod output end of the lower cylinder is connected to the pressure plate, which is used to drive the pressure plate to move the upper module assembly in the vertical direction to perform mold opening or mold closing actions. Both the push-pull cylinder and the press-down cylinder are connected to solenoid valves via air pipes, and the microcomputer controller is connected to the solenoid valves via wires.

2. The microcomputer-controlled corrugated pipe straightening device according to claim 1, characterized in that: The first lower module and the second lower module are respectively provided with a first lower model cavity and a second lower model cavity with a semi-circular cross-section at their tops, and the first lower model cavity and the second lower model cavity are coaxially arranged; the first upper module and the second upper module are respectively provided with a first upper model cavity and a second upper model cavity with a semi-circular cross-section at their bottoms, and the first upper model cavity and the second upper model cavity are coaxially arranged.

3. The microcomputer-controlled corrugated pipe straightening device according to claim 2, characterized in that: The first limiting plate and the first straightening plate are fixedly connected to the first lower module and the second lower module, respectively. The first limiting plate and the first straightening plate protrude upward from the inner walls of the first lower mold cavity and the second lower mold cavity, respectively. The upper edges of the first limiting plate and the first straightening plate are respectively provided with a first arc-shaped notch and a second arc-shaped notch coaxial with the first lower mold cavity and the second lower mold cavity, respectively. The second limiting plate and the second straightening plate are fixedly connected to the first upper module and the second upper module, respectively. The second limiting plate and the second straightening plate protrude downward from the inner walls of the first upper mold cavity and the second upper mold cavity, respectively. The lower edges of the second limiting plate and the second straightening plate are respectively provided with a third arc-shaped notch and a fourth arc-shaped notch coaxial with the first upper mold cavity and the second upper mold cavity, respectively.

4. The microcomputer-controlled corrugated pipe straightening device according to claim 2, characterized in that: The second lower module is provided with a vertical through hole and an elastic lifting seat. The elastic lifting seat includes a lifting slider, a clamping sleeve, a fastening screw, and a spring. The lifting slider is slidably connected to the vertical through hole and has a connecting through hole. The axis of the connecting through hole is parallel to the axis of the second lower mold cavity. The clamping sleeve passes through the connecting through hole and has an axial slit on one side. The fastening screw is threaded to the top of the lifting slider, and the shank of the fastening screw is pressed against the upper part of the clamping sleeve. One end of the spring abuts against the support seat, and the other end abuts against the lifting slider. The push-pull plate is provided with a screw hole, and the piston rod output end of the push-pull cylinder is threaded to the screw hole. The forming mandrel passes through the clamping sleeve and is located directly above the second lower mold cavity. One end of the forming mandrel extends into the screw hole, and the other end is tapered and set away from the push-pull plate.

5. A microcomputer-controlled corrugated pipe straightening device according to claim 4, characterized in that: The pull connector is a bolt, which is horizontally set and threadedly connected to the second upper module on the side away from the first upper module; the push-pull plate is higher than the second upper module, and the top of the push-pull plate is provided with a connecting groove that matches the rod of the pull connector. When the upper module assembly and the lower module assembly are molded together, the rod of the pull connector is inserted into the connecting groove.

6. The microcomputer-controlled corrugated pipe straightening device according to claim 1, characterized in that: Multiple guide pillars are vertically and fixedly connected to the support base. The pressure plate is arranged parallel above the support base. Multiple linear ball bearings that match the guide pillars are installed on the pressure plate. The linear ball bearings are fitted on the guide pillars and slide in cooperation with the guide pillars.

7. The microcomputer-controlled corrugated pipe straightening device according to claim 1, characterized in that: The second lower module has a first connecting slider integrally provided on the bottom front and rear sides along the length direction. The support base has a first L-shaped stop block that matches the first connecting slider installed on the front and rear sides of the second lower module along the length direction. The first connecting slider and the first L-shaped stop block are slidably engaged. The second upper module has a second connecting slider integrally provided on the top front and rear sides along the length direction. The pressure plate has a second L-shaped stop block that matches the second connecting slider fixedly connected on the front and rear sides of the second upper module along the length direction. The second connecting slider and the second L-shaped stop block are slidably engaged.

8. The microcomputer-controlled corrugated pipe straightening device according to claim 1, characterized in that: The first upper module is equipped with a vertically arranged first guide pin, which extends downward from the lower end of the first upper module. The first lower module is provided with a first guide hole that matches the first guide pin. The second upper module is equipped with a vertically arranged second guide pin, which extends downward from the lower end of the second upper module. The second lower module is provided with a second guide hole that matches the second guide pin.

9. A microcomputer-controlled corrugated pipe straightening device according to claim 1, characterized in that: The pressing cylinder includes a first pressing cylinder and a second pressing cylinder. Both the first pressing cylinder and the second pressing cylinder are dual-shaft cylinders. The first pressing cylinder and the second pressing cylinder are respectively vertically installed on the front and rear sides of the support base. A first connecting plate is installed on the piston rod output end of the first pressing cylinder, and a second connecting plate is installed on the piston rod output end of the second pressing cylinder. The first connecting plate and the second connecting plate are fixedly connected to the pressure plate.

10. A microcomputer-controlled corrugated pipe straightening device according to claim 1, characterized in that: An mounting plate is fixedly connected to the support base on the outside of the second lower module; the push-pull cylinder is a standard cylinder with adjustable stroke, the push-pull cylinder is horizontally fixedly connected to the mounting plate, multiple fixing columns are fixedly connected between the front end of the cylinder body and the mounting plate, and a support plate is vertically fixedly connected to the rear end of the cylinder body.

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