Corrugated pipe production detection equipment

Abstract

The invention relates to the field of corrugated pipes, and discloses corrugated pipe production detection equipment. The steel sleeve assembling machine comprises a steel sleeve assembling mechanism, a pre-assembling mechanism, an assembling part assembling mechanism, a steel sleeve buckling and pressing mechanism and a production transferring mechanism which are integrated on a production rack. The steel jacket assembling mechanism comprises a steel jacket mounting assembly, a flaring assembly and a steel jacket pressing ring. The flaring assembly is suitable for driving the steel jacket pressing ring to press a steel jacket in place in the flaring process. The pre-assembling mechanism is suitable for assembling the sharp nozzle and the nut together in a sleeving mode and conveying the sharp nozzle and the nut to the assembly part assembling mechanism, and in the conveying process, the pre-assembling mechanism is suitable for driving the nut to rotate so as to be in threaded connection with the sharp nozzle; the steel sleeve buckling mechanism is suitable for buckling and forming a steel sleeve of the corrugated pipe assembled with the sharp nozzle and the nut; the production transfer mechanism is suitable for transferring the corrugated pipes. The production continuity of each process is improved, manual interference is reduced, the automation degree is high, and the production efficiency is improved; and the cost is saved.

Description

Technical Field

[0001] This invention relates to the field of corrugated pipe technology, and more specifically, to a corrugated pipe production and testing equipment. Background Technology

[0002] Stainless steel corrugated pipes, such as those for gas connections and water pipe connections, undergo a manufacturing process where steel sleeves, nozzles, and nuts are installed at both ends of the corrugated pipe. During production, the steel sleeve is fitted onto the end of the corrugated pipe to enhance the strength of the end connection. Then, a flaring device is used to widen the end of the corrugated pipe, ensuring a tight fit between the steel sleeve and the corrugated pipe and facilitating nozzle assembly. One end of the nozzle is inserted into the corrugated pipe, and the other end is adapted to cooperate with the "self-closing valve" on a gas stove or gas water heater, enabling "gas supply" and "automatic gas shut-off" functions. The nut is fitted onto the nozzle and threadedly connected to it, connecting it to the interface of the gas stove or gas water heater. After the nozzle and nut are installed, the corrugated pipe is transferred to a crimping device to crimp the steel sleeve, connecting the steel sleeve and the nozzle together. Finally, the airtightness of the corrugated pipe is tested using testing equipment. In the current corrugated pipe production process, each of the above-mentioned processes is handled by separate processing equipment. Some processes also require manual assembly with the assistance of tooling (such as the installation of nozzles and nuts). Furthermore, it is necessary to manually move the products processed in the previous process to the next process. After production is completed, the products are then manually transferred to the testing equipment for airtightness testing, resulting in low efficiency throughout the entire production and testing process. Summary of the Invention

[0003] To address at least one of the aforementioned problems, the present invention provides a corrugated pipe production and testing equipment, comprising a production frame, a steel sleeve assembly mechanism, a pre-assembly mechanism, an assembly component assembly mechanism, a steel sleeve crimping mechanism, and a production transfer mechanism integrated on the production frame; the steel sleeve assembly mechanism includes a steel sleeve mounting assembly, a flaring assembly, a steel sleeve lower pressure ring, and a first clamping cylinder for clamping the corrugated pipe; the flaring assembly is adapted to flare the corrugated pipe and, during the flaring process, drives the steel sleeve lower pressure ring to move downward to press the steel sleeve into place; the pre-assembly mechanism is adapted to assemble the nozzle and nut together and transfer them to the assembly component assembly mechanism; during the transfer process, the pre-assembly mechanism is adapted to drive the nut to rotate for threaded connection with the nozzle; the assembly component assembly mechanism is adapted to insert the threaded nozzle and nut into the corrugated pipe; the steel sleeve crimping mechanism is adapted to crimp and form the steel sleeve of the corrugated pipe after the nozzle and nut are assembled; the production transfer mechanism is adapted to transfer the corrugated pipes processed on the steel sleeve assembly mechanism, the assembly component assembly mechanism, and the steel sleeve crimping mechanism.

[0004] Optionally, a feeding block is provided above the first clamping cylinder, and a feeding channel for the steel sleeve to fall is provided on the feeding block; a steel sleeve cylinder for stacking multiple steel sleeves and a steel sleeve feeding cylinder for pushing the steel sleeves one by one into the feeding channel are provided on one side of the feeding block.

[0005] Optionally, the flaring assembly includes a flaring cylinder and a flaring column located above the material feeding block. The flaring column is concentrically arranged with the material feeding channel. The flaring cylinder is connected to the flaring column to drive the flaring column through the material feeding channel and insert it into the corrugated pipe for flaring. The steel sleeve pressure ring is slidably fitted onto the flaring column. A protrusion is fixedly provided on the inner wall of the steel sleeve pressure ring. The outer wall of the flaring column has a communicating vertical groove and a rotating groove. The vertical groove extends along the axial direction of the flaring column, and the rotating groove extends along the circumferential direction of the flaring column. The protrusion is adapted to slide into the vertical groove and rotate into the rotating groove. When the steel sleeve is not pressed down and the flaring column is flaring the corrugated pipe, the protrusion is located in the rotating groove, and the steel sleeve pressure ring and the flaring column move down synchronously. When the steel sleeve is pressed down, the protrusion rotates in the vertical groove, and the flaring column moves relative to the steel sleeve pressure ring.

[0006] Optionally, the first clamping cylinder jaws are provided with a first driving block at the top to drive the protrusion from the rotating groove to the vertical groove. The first driving block is provided with a first driving inclined surface at the top. The bottom of the steel sleeve pressure ring is provided with a first mating inclined surface groove for the first driving inclined surface to be inserted and to cooperate with the first driving inclined surface. Above the unloading block, there are second driving blocks at intervals to drive the protrusion from the vertical groove to the rotating groove. The bottom of the second driving block is provided with a second driving inclined surface. The top of the steel sleeve pressure ring is provided with a second mating inclined surface groove for the second driving inclined surface to be inserted and to cooperate with the second driving inclined surface.

[0007] Optionally, the flared column includes a tapered section and a cylindrical section, the tapered section being located at the bottom of the cylindrical section to drive the steel sleeve and the end of the bellows to maintain a concentric fit, and the outer diameter of the cylindrical section being smaller than the inner diameter of the steel sleeve and larger than the inner diameter of the bellows.

[0008] Optionally, the pre-assembly mechanism includes a first vibrating feeding plate for automatically feeding the nozzle, a second vibrating feeding plate for automatically feeding the nut, a feeding channel, a feeding push cylinder, a nozzle clamping feeding assembly, and a nut clamping feeding assembly; a push plate is installed on the telescopic rod of the feeding push cylinder; the nozzle clamping feeding assembly is adapted to move the nozzle at the outlet of the first vibrating feeding plate into the feeding channel; the nut clamping feeding assembly is adapted to fit the nut at the outlet of the second vibrating feeding plate onto the nozzle located in the feeding channel; and the feeding push cylinder is adapted to push the assembled nozzle and nut in the feeding channel to the assembly assembly mechanism.

[0009] Optionally, the side wall of the feeding channel is provided with a rubber pad. When the feeding push cylinder drives the nozzle and nut to move within the feeding channel to the position of the rubber pad, the rubber pad has close contact with the outer wall of the nut to drive the nut to rotate and connect with the nozzle threadedly.

[0010] Optionally, the assembly mechanism includes a second clamping cylinder for clamping the bellows, a first linear motion module, a first lifting slide cylinder, and a finger clamping cylinder. The finger clamping cylinder is located above the second clamping cylinder and is used to clamp the nozzle and nut assembled by the pre-assembly mechanism. The first lifting slide cylinder is used to drive the finger clamping cylinder to move up and down. The first linear motion module is used to drive the first lifting slide cylinder to move the finger clamping cylinder back and forth between the pre-assembly mechanism and the bellows.

[0011] Optionally, the corrugated pipe production and testing equipment also includes an airtightness testing mechanism and a testing and transfer mechanism located on one side of the production frame; the airtightness testing mechanism is adapted to test the airtightness of the corrugated pipe by differential pressure; the testing and transfer mechanism is adapted to transfer the U-shaped corrugated pipe, which has been processed by the steel sleeve crimping mechanism, to the airtightness testing mechanism for testing.

[0012] Optionally, the airtightness detection mechanism includes a clamping and sealing assembly, a clamping and inflation assembly, and a differential pressure sensor. The clamping and sealing assembly and the clamping and inflation assembly are adapted to clamp and block both ends of the bellows, respectively, and the clamping and inflation assembly is adapted to inflate the bellows with air. Both the clamping and sealing assembly and the clamping and inflation assembly are connected to the differential pressure sensor to detect the pressure difference between the two ends of the bellows.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0014] 1. The equipment corresponding to the entire assembly process is integrated together, and the assembly mechanism is transferred between each assembly mechanism, which shortens the overall production and assembly time. At the same time, the assembled bellows can be automatically tested for air tightness at the air tightness testing mechanism after being transferred by the inspection and transfer mechanism, which improves the continuity of production in each process, reduces manual intervention, has a high degree of automation, and improves production efficiency.

[0015] 2. When flaring the bellows, the flaring assembly can be integrated with the steel sleeve pressure ring to achieve linkage. The steel sleeve pressure ring moves down with the flaring column to press the steel sleeve into place. After that, it can rotate on its own with the help of the first drive block so that the protrusion enters the vertical groove. This prevents the steel sleeve pressure ring from interfering with the flaring column as it continues to move down. Instead, the flaring column continues to move down to complete the flaring action. After the flaring is completed, the flaring column moves up, and the steel sleeve pressure ring moves to the bottom of the vertical groove near the rotating groove under the action of gravity. Then, under the action of the second drive block, it automatically rotates into the rotating groove to prepare for the next action. The whole process only requires one drive source, the flaring cylinder. The structure is ingenious, saves costs, and can complete both pressing and flaring actions.

[0016] 3. During the downward movement of the flared column, the tapered section can be inserted into the bellows first. As the flared column continues to move downward, the concentricity of the bellows and the steel sleeve can be guaranteed, which can overcome the situation where the steel sleeve cannot be fitted onto the bellows due to the offset of the bellows end.

[0017] 4. During assembly, before the production transfer mechanism transfers the steel set assembly mechanism to the assembly part assembly mechanism, the nozzle and nut will be pre-assembled automatically. When the feeding push cylinder pushes the assembled nozzle and nut to the feeding position, the nut can rub against the rubber pad on the side wall of the feeding channel, causing the nut to rotate automatically and form a whole with the nozzle threaded connection. This helps the assembly part assembly mechanism to directly clamp and feed the material, reducing the need for additional drive mechanisms to drive the nut to rotate and the nozzle threaded connection. This saves costs and further shortens the assembly time, improving production assembly efficiency.

[0018] 5. Compared with the traditional method of testing by ventilating and then placing the bellows in water, using a differential pressure sensor to test the airtightness of the bellows eliminates the need for additional time to clean the bellows, further improving testing efficiency. The differential pressure sensor contains a pressure-sensitive element. The pressure at both ends of the bellows acts on both sides of the pressure-sensitive element, and the pressure difference causes the pressure-sensitive element to deform or displace, which is then converted into a standard electrical signal output. This reduces human intervention and improves the authenticity and accuracy of the test results. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the device in an embodiment of the present invention;

[0020] Figure 2 This is a structural diagram of the steel sleeve assembly mechanism, pre-assembly mechanism, assembly component assembly mechanism, steel sleeve clamping mechanism, and production transfer mechanism in an embodiment of the present invention;

[0021] Figure 3 The structure of the steel assembly mechanism in this embodiment of the invention. Figure 1 ;

[0022] Figure 4 The structure of the steel assembly mechanism in this embodiment of the invention. Figure 2 ;

[0023] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0024] Figure 6 This is a structural diagram of the flared post and the lower pressure ring of the steel sleeve in an embodiment of the present invention;

[0025] Figure 7 for Figure 6 Enlarged view of section B;

[0026] Figure 8 This is a structural diagram of the pre-assembly mechanism and the assembly mechanism of the assembled parts in an embodiment of the present invention;

[0027] Figure 9 This is a structural diagram of the assembly mechanism for the assembly components in an embodiment of the present invention;

[0028] Figure 10 This is a structural diagram of the feeding push cylinder and the feeding channel in an embodiment of the present invention;

[0029] Figure 11 This is a structural diagram of the steel sleeve clamping mechanism in an embodiment of the present invention;

[0030] Figure 12 This is a structural diagram of the airtightness testing mechanism and the testing and transfer mechanism in an embodiment of the present invention;

[0031] Figure 13 This is a structural diagram of the airtightness detection mechanism in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1. Steel sleeve assembly mechanism; 11. Steel sleeve mounting assembly; 111. Feeding block; 112. Steel sleeve cylinder; 113. Steel sleeve feeding cylinder; 114. Feeding channel; 115. Rectangular sleeve; 116. Steel sleeve push rod; 12. Flaring assembly; 121. Flaring cylinder; 122. Flaring column; 123. Vertical groove; 124. Rotating groove; 13. Steel sleeve lower pressure ring; 131. Protrusion; 132. First mating inclined groove; 133. Second mating inclined groove; 14. 15. First clamping cylinder; 16. First drive block; 17. Second drive block; 18. V-shaped spring; 2. Pre-assembly mechanism; 21. First vibrating feed plate; 22. Second vibrating feed plate; 23. Feeding channel; 24. Feeding push cylinder; 25. Pointed nozzle clamping feeding assembly; 251. Pointed nozzle base fixture; 252. Pointed nozzle clamping cylinder; 253. Pointed nozzle frame plate; 254. Pointed nozzle lifting cylinder; 26. Nut clamping feeding assembly; 27. Reciprocating cylinder; 28. Rubber pad; 3 1. Assembly mechanism for components; 31. Second clamping cylinder; 32. First linear moving module; 33. First lifting slide cylinder; 34. Finger clamping cylinder; 4. Steel sleeve clamping mechanism; 41. Shrinking machine; 42. Third clamping cylinder; 43. Second lifting slide cylinder; 5. Production transfer mechanism; 51. Transfer plate; 52. Transfer clamping cylinder; 53. Linear transfer cylinder; 6. Air tightness testing mechanism; 61. Clamping sealing assembly; 611. First finger clamping cylinder; 612. 613 First push cylinder; 614 First rubber plunger; 62 Clamping inflation assembly; 621 Second finger clamping cylinder; 622 Second push cylinder; 623 Diverter valve; 624 Second rubber plunger; 63 Differential pressure sensor; 7 Detection and transfer mechanism; 71 Transfer frame; 72 Second linear moving module; 73 Transfer clamping cylinder; 8 Initial positioning mechanism; 81 Positioning thumb clamping cylinder; 82 Z-shaped plate; 9 Finished product temporary storage assembly. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the following description is provided in conjunction with the accompanying drawings. Figure 1-13 This application will be described in further detail.

[0034] This invention provides a corrugated pipe production and testing equipment, referring to... Figure 1 and Figure 2The corrugated pipe production and testing equipment includes a production frame, a steel sleeve assembly mechanism 1, a pre-assembly mechanism 2, an assembly component assembly mechanism 3, a steel sleeve crimping mechanism 4, a production transfer mechanism 5, an airtightness testing mechanism 6, and a testing transfer mechanism 7, all sequentially integrated on the production frame. The steel sleeve assembly mechanism 1 is suitable for fitting the steel sleeve onto the corrugated pipe and pressing it into place, and for flaring the corrugated pipe to ensure a tight fit between the steel sleeve and the covering layer. The pre-assembly mechanism 2 is suitable for assembling the nozzle and nut together and transferring them to the assembly component assembly mechanism 3. During transfer, the pre-assembly mechanism 2 is suitable for driving the nut to rotate for threaded connection with the nozzle. The assembly component assembly mechanism 3 is suitable for inserting the threaded nozzle and nut into the corrugated pipe; the steel sleeve crimping mechanism 4 is suitable for crimping the steel sleeve of the corrugated pipe after the nozzle and nut are assembled, thus sealing the steel sleeve, corrugated pipe, and nozzle together. The corrugated pipe forms two U-shaped sections that pass through each mechanism sequentially, thereby achieving assembly at both ends of the corrugated pipe. The production transfer mechanism 5 is used to transfer the corrugated pipe processed by the steel sleeve assembly mechanism 1 to the assembly mechanism; simultaneously, it transfers the corrugated pipe processed by the assembly mechanism to the steel sleeve crimping mechanism 4. During processing by the steel sleeve assembly mechanism 1, the pre-assembly mechanism 2 assembles the nozzle and nut. The airtightness testing mechanism 6 is suitable for testing the airtightness of the corrugated pipe through pressure difference; the testing and transfer mechanism 7 is suitable for transferring the U-shaped corrugated pipe processed by the steel sleeve crimping mechanism 4 to the airtightness testing mechanism 6 for testing, and transferring unqualified products after testing, thereby improving the continuity of production in each process, achieving a high degree of automation, and improving production efficiency.

[0035] Reference Figure 1 and Figure 2 The production frame is also equipped with an initial positioning mechanism 8, which is located on the side of the steel sleeve assembly mechanism 1 away from the assembly component assembly mechanism 3, and is arranged at intervals with the steel sleeve assembly mechanism 1. During production, the two ends of the corrugated pipe are manually placed on the initial positioning mechanism 8 at intervals to achieve positioning, ensuring that the height position of each corrugated pipe is the same. The production transfer mechanism 5 can transfer the corrugated pipe positioned by the initial positioning mechanism 8 to the steel sleeve assembly mechanism 1. The production frame is also equipped with a finished product temporary storage assembly 9, which is located on the side of the steel sleeve crimping mechanism 4 near the airtightness testing mechanism 6. Two sets of finished product temporary storage assemblies 9 are arranged at intervals. The corrugated pipes processed by the steel sleeve crimping mechanism 4 can be transferred to the finished product temporary storage assembly 9 by the production transfer mechanism 5. The two sets of finished product temporary storage assemblies 9 clamp and temporarily store the U-shaped corrugated pipes, so that the testing transfer mechanism 7 can clamp and transfer them to the airtightness testing mechanism 6. In this embodiment, the two components of the temporary storage assembly 9 are preferably thumb gripping cylinders. The grippers of the thumb gripping cylinders are rotating grippers. When the production transfer mechanism 5 transfers the bellows, the grippers of the thumb gripping cylinders will be in a left-right rotating open state, which will not interfere with the bellows.

[0036] The production transfer mechanism 5 includes a transfer plate 51, a transfer clamping cylinder 52, and a linear transfer cylinder 53. A guide rail assembly is installed on the production frame, and the transfer plate 51 is slidably mounted on the guide rail assembly. The transfer clamping cylinder 52 is bolted to the top of the transfer plate 51. The two grippers of the transfer clamping cylinder 52 are rotating grippers, meaning that the two grippers are hinged to the cylinder body of the transfer clamping cylinder 52, achieving the effect of opening and closing by left and right rotation. Thus, when the transfer plate 51 drives the transfer clamping cylinder 52 to reset, the grippers of the transfer clamping cylinder 52 will not interfere with the bellows at any part of the mechanism. The linear transfer cylinder 53 is fixed to the production frame below the transfer plate 51 by bolts. A connecting plate is fixed to the bottom of the transfer plate 51. The telescopic rod of the linear transfer cylinder 53 passes through the connecting plate and is fixedly connected to the connecting plate by two clamping nuts, thereby driving the transfer plate 51 to drive the transfer clamping cylinder 52 to move back and forth between various mechanisms. Among them, the initial positioning mechanism 8, the steel sleeve assembly mechanism 1, the assembly component assembly mechanism 3, the steel sleeve clamping mechanism 4, and the finished product temporary storage component 9 are each equipped with a transfer clamping cylinder 52, so as to realize the continuity of transfer at various mechanisms.

[0037] Reference Figures 1 to 3 The initial positioning mechanism 8 includes a positioning thumb gripping cylinder 81 and a Z-shaped plate 82 mounted on the production frame. The Z-shaped plate 82 is located above the positioning thumb gripping cylinder 81, which is located above the transfer gripping cylinder 52 at that position to grip the corrugated pipe. The positioning thumb gripping cylinder 81 and the transfer gripping cylinder 52 are gripping cylinders of the same type. The top plate of the Z-shaped plate 82 is in a cantilevered state. When placing the corrugated pipe, the top of the corrugated pipe abuts against the bottom of the top plate of the Z-shaped plate 82 to achieve positioning. The bottom of the top plate of the Z-shaped plate 82 is also integrally stamped with a limiting piece. The limiting piece is located on the side of the corrugated pipe away from the steel fitting mechanism 1, thus forming a positioning reference and improving the accuracy of the corrugated pipe's position during placement.

[0038] Reference Figures 2 to 6 The steel sleeve assembly mechanism 1 includes a steel sleeve mounting assembly 11 connected to the production frame, a flaring assembly 12, a steel sleeve pressure ring 13, and a first clamping cylinder 14 for clamping the bellows. The first clamping cylinder 14 is located above the transfer clamping cylinder 52, which, after the transfer clamping cylinder 52 releases the bellows, can clamp the bellows. The first clamping cylinder 14 is of the same type as the transfer clamping cylinder 52, and the same applies to other parts of the mechanism. The flaring assembly 12 is adapted to flare the bellows and, during the flaring process, drives the steel sleeve pressure ring 13 downwards to press the steel sleeve into place.

[0039] The steel sleeve mounting assembly 11 includes a feeding block 111, a steel sleeve cylinder 112, and a steel sleeve loading cylinder 113. The feeding block 111 is located above the first clamping cylinder 14 and is fixedly connected to the production frame. The feeding block 111 has a feeding channel 114 for the steel sleeves to fall. The feeding block 111 has a rectangular sleeve 115 with a horizontal opening on the side near the Z-shaped plate 82. The top of the rectangular sleeve 115 has a feeding port communicating with the inside of the rectangular sleeve 115. The steel sleeve cylinder 112 is fixedly installed at the feeding port at the top of the rectangular sleeve 115 by bolts. Multiple steel sleeves are stacked inside the steel sleeve cylinder 112. The steel sleeve loading cylinder 113 is located on the side of the rectangular sleeve 115 away from the feeding block 111 and is fixedly connected to the production frame. A steel sleeve push rod 116 is fixedly installed on the telescopic rod of the steel sleeve loading cylinder 113. The steel sleeve push rod 116 is inserted into the rectangular sleeve 115. The top of the sleeve push rod 116 has a sleeve receiving groove for one sleeve to enter. The sleeve receiving groove extends vertically through the sleeve push rod 116 and is connected to the discharge port. The bottom sleeve in the sleeve cylinder 112 enters the sleeve receiving groove through the discharge port. Then, driven by the sleeve loading cylinder 113, the sleeve push rod 116 moves the sleeve in the sleeve receiving groove to directly above the unloading block 111. After the bottom opening of the sleeve receiving groove aligns with the discharge channel 114, the sleeve falls into the discharge channel 114. At this time, the sleeve push rod 116 blocks the discharge port, thus realizing the feeding of sleeves one by one.

[0040] Reference Figures 2 to 6 The flaring assembly 12 includes a flaring cylinder 121 and a flaring column 122 located above the unloading block 111. The flaring cylinder 121 is fixedly connected to the production frame by bolts. The flaring column 122 is concentrically arranged with the unloading channel 114. The flaring cylinder 121 is connected to the flaring column 122 to drive the flaring column 122 through the unloading channel 114 and insert it into the corrugated pipe for flaring. The flaring column 122 includes a conical section and a cylindrical section. The conical section is located at the bottom of the cylindrical section to drive the steel sleeve and the end of the corrugated pipe to maintain a concentric fit. The outer diameter of the cylindrical section is smaller than the inner diameter of the steel sleeve but larger than the inner diameter of the corrugated pipe, so as to achieve flaring of the corrugated pipe and make the corrugated pipe fit tightly with the steel sleeve, so that the steel sleeve will not move during the subsequent transportation of the corrugated pipe, ensuring assembly accuracy. Due to processing errors in the product and its various mechanisms during production, and the slight offset of the corrugated pipe after it is clamped, the corrugated pipe cannot be precisely aligned with the material feeding channel 114, affecting the smoothness of the steel sleeve being fitted onto the corrugated pipe. The tapered section can be inserted into the corrugated pipe first to correct the offset, and as the flared column 122 continues to move downward, the concentricity of the corrugated pipe and the steel sleeve can be ensured, thus overcoming the situation where the steel sleeve cannot be fitted onto the corrugated pipe due to the offset of the corrugated pipe end.

[0041] The steel sleeve lower pressure ring 13 is slidably fitted onto the flared post 122. A protrusion 131 is fixedly provided on the inner wall of the steel sleeve lower pressure ring 13. The outer wall of the flared post 122 has a communicating vertical groove 123 and a rotating groove 124. The vertical groove 123 and the rotating groove 124 form an L-shaped groove, and the rotating groove 124 is located on the conical post. The vertical groove 123 extends axially along the flared post 122, and the rotating groove 124 extends circumferentially along the flared post 122. The protrusion 131 is adapted to be slidably inserted into the vertical groove 123 and rotated into the rotating groove 124. When the steel sleeve is not pressed into place and the flaring post 122 is flaring the bellows, the protrusion 131 is located in the rotating groove 124. Under the action of the top wall of the rotating groove 124, the protrusion 131 causes the steel sleeve pressing ring 13 and the flaring post 122 to move down synchronously, so that the bottom of the steel sleeve abuts against the top of the gripper of the first clamping cylinder 14 to achieve the pressing into place. Before the steel sleeve pressing ring 13 contacts the steel sleeve, the bellows is already concentric with the steel sleeve under the action of the tapered section, and the steel sleeve is fitted onto the bellows. After the steel sleeve is pressed into place, the protrusion 131 rotates in the vertical groove 123, and the flaring post 122 continues to move down relative to the steel sleeve pressing ring 13, so that the cylindrical section is inserted into the bellows to complete the flaring action. The entire process requires only one drive source, the flaring cylinder 121, which is ingenious in structure, saves costs, and can complete both pressing and flaring actions, ensuring assembly accuracy.

[0042] Reference Figures 4 to 7 Specifically, a first driving block 15 is welded and fixed to the top of the gripper of the first clamping cylinder 14, driving the protrusion 131 to rotate from the rotating groove 124 to the vertical groove 123. The top of the first driving block 15 is provided with a first driving inclined surface, and the bottom of the steel sleeve pressing ring 13 is provided with a first mating inclined surface groove 132 for the first driving inclined surface to be inserted and cooperate with the first driving inclined surface. At the same time that the steel sleeve pressing ring 13 presses the steel sleeve to the top of the gripper of the first clamping cylinder 14, the first driving block 15 is inserted into the first mating inclined surface groove 132. The first driving inclined surface cooperates with the inclined groove wall in the first mating inclined surface groove 132 to drive the steel sleeve pressing ring 13 to rotate automatically, so that the protrusion 131 rotates into the vertical groove 123. In order to ensure that the cooperation between the first driving block 15 and the first mating inclined surface groove 132 does not affect the cooperation between the steel sleeve pressing ring 13 and the steel sleeve, the outer diameter of the steel sleeve pressing ring 13 is larger than the outer diameter of the steel sleeve, and the first mating inclined surface groove 132 is located outside the steel sleeve. It is worth noting that, since the material discharge channel 114 needs to allow the steel sleeve and the lower pressure ring 13 of the steel sleeve to pass through, the outer diameter of the lower pressure ring 13 of the steel sleeve is slightly larger than the outer diameter of the steel sleeve, so as to ensure that the gap between the steel sleeve and the material discharge channel 114 is not too large and will cause the steel sleeve to get stuck during the falling process.

[0043] Above the feeding block 111, there is a second driving block 16 that drives the protrusion 131 to rotate from the vertical groove 123 to the rotating groove 124. A cantilever column is welded to the second driving block 16 and is fixedly installed on the production frame by bolts. The bottom of the second driving block 16 is provided with a second driving inclined surface, and the top of the steel sleeve pressure ring 13 is provided with a second mating inclined surface groove 133 for the second driving inclined surface to be inserted and to cooperate with the second driving inclined surface. When the flared column 122 moves upward, since the protrusion 131 is located in the vertical groove 123, the flared column 122 will rise relative to the steel sleeve pressure ring 13 first, until the protrusion 131 abuts against the bottom wall of the vertical groove 123, at which point the flared column 122 will drive the steel sleeve pressure ring 13 to rise synchronously. At the same time that the bottom of the conical section moves above the rectangular sleeve 115 without interfering with the steel sleeve entering the material drop channel 114 and rises to reset, the second drive block 16 is inserted into the second mating inclined groove 133. The second drive inclined surface engages with the inclined groove wall in the second mating inclined groove 133 to drive the lower pressure ring 13 of the steel sleeve to rotate automatically, so that the protrusion 131 rotates into the rotating groove 124.

[0044] Reference Figures 4 to 7 A V-shaped spring piece 17 is provided on the side wall of the vertical groove 123 near and connected to the rotating groove 124. The opening of the V-shaped spring piece 17 faces downward, and one side of the V-shaped spring piece 17 is spot-welded to the groove wall of the vertical groove 123. When the protrusion 131 is located in the rotating groove 124, the V-shaped spring piece 17 is in an open and relaxed state, which can form a certain obstruction at the connection between the rotating groove 124 and the vertical groove 123, making it difficult for the protrusion 131 to freely enter the vertical groove 123 due to equipment vibration, thus affecting the accuracy of pressing the steel sleeve into place. When the protrusion 131 rotates into the vertical groove 123 under the action of the first driving block 15, it will squeeze the V-shaped spring piece 17. At this time, the space of the vertical groove 123 is sufficient to accommodate the protrusion 131, so that the protrusion 131 will not be unable to rotate into the vertical groove 123 and slide within the vertical groove 123 due to the installation of the V-shaped spring piece 17.

[0045] Two vertical grooves 123 and two rotating grooves 124 are circumferentially spaced on the flared post 122. Correspondingly, two first drive blocks 15, two first mating inclined grooves 132, two second drive blocks 16, and two second mating inclined grooves 133 are circumferentially spaced. The two first drive blocks 15 are respectively fixedly mounted on the two grippers of the first clamping cylinder 14.

[0046] Combination Figure 2 Reference Figures 8 to 10The pre-assembly mechanism 2 is located behind the assembly mechanism 3. The pre-assembly mechanism 2 includes a first vibrating feeding plate 21 for automatic feeding of the nozzle, a second vibrating feeding plate 22 for automatic feeding of the nut, a feeding channel 23, a feeding push cylinder 24, a nozzle clamping feeding assembly 25, and a nut clamping feeding assembly 26. A feeding push plate is installed on the telescopic rod of the feeding push cylinder 24. The nozzle clamping feeding assembly 25 is adapted to move the nozzle at the outlet of the first vibrating feeding plate 21 into the feeding channel 23. The nut clamping feeding assembly 26 is adapted to fit the nut at the outlet of the second vibrating feeding plate 22 onto the nozzle located in the feeding channel 23. The feeding push cylinder 24 is adapted to push the assembled nozzle and nut in the feeding channel 23 to the assembly mechanism 3.

[0047] Linear guide rails are installed on the frame. The linear guide rails include linear tracks and sliders. The sliders slide along the linear guide rails in the left-right direction (i.e., reciprocate between the first vibrating feeding plate 21 and the second vibrating feeding plate 22). A reciprocating cylinder 27 is bolted to the frame. The extension rod of the reciprocating cylinder 27 is fixedly connected to the slider, thereby driving the slider to move back and forth. Two sets of vertical guide rails are installed at intervals on the slider. The vertical guide rail sets include vertical guide rails and fixed blocks. The fixed blocks are fixedly connected to the slider by bolts. The vertical guide rails and fixed blocks slide together in the vertical direction. Some components of the nozzle clamping feeding assembly 25 and the nut clamping feeding assembly 26 are respectively installed on the vertical guide rails. At the same time, the reciprocating cylinder 27 drives the slider to move the nozzle clamping feeding assembly 25 and the nut clamping feeding assembly 26 left and right, thereby realizing the action of alternating up-down and left-right movement of the nozzle and nut after clamping, so as to clamp and move the nozzle or nut into the feeding channel 23.

[0048] Reference Figures 8 to 10 The pointed nozzle clamping and feeding assembly 25 includes a pointed nozzle base fixture 251, a pointed nozzle clamping cylinder 252, a pointed nozzle frame plate 253, and a pointed nozzle lifting cylinder 254. The base fixture is connected to the first vibrating feeding plate 21 via a material channel, allowing the pointed nozzles in the first vibrating feeding plate 21 to move one by one to a fixed position on the base fixture. The pointed nozzle frame plate 253 is fixedly connected to the corresponding vertical guide rail by bolts. The pointed nozzle clamping cylinder 252 is mounted on the pointed nozzle frame plate 253 and moves synchronously with the pointed nozzle frame plate 253, and is used to clamp the pointed nozzles. The cylinder body of the pointed nozzle lifting cylinder 254 is fixedly mounted on the pointed nozzle frame plate 253. The telescopic rod of the pointed nozzle lifting cylinder 254 is fixedly connected to the slider. When the telescopic rod of the pointed nozzle lifting cylinder 254 extends, the cylinder body and the pointed nozzle frame plate 253 can drive the pointed nozzle clamping cylinder 252 to rise relative to the slider.

[0049] The structure of the nut clamping and feeding assembly 26 is the same as that of the pointed clamping assembly, and the installation method is also the same. The only difference is in the gripper of the clamping cylinder that clamps the nut, so the specific structure will be described again.

[0050] Reference Figures 8 to 10 The cylinder body of the feeding push cylinder 24 is fixed to the production frame with bolts, and the telescopic rod of the feeding push cylinder 24 is inserted into the feeding channel 23. The feeding push plate is clamped and fixed to the telescopic rod of the feeding push cylinder 24 by two clamping nut plates. A polygonal base column is welded and fixed to the feeding push plate. The nozzle is fitted onto the base column by the groove that matches its own shape. Then the nut is fitted onto the base column. Finally, the feeding push cylinder 24 pushes the feeding push plate to move the initially assembled nozzle and nut to the assembly mechanism 3. A rubber pad 28 is fixed to one side wall of the feeding channel 23 with screws. The rubber pad 28 can make close contact with the nut. When the feeding cylinder 24 drives the nozzle and nut to move within the feeding channel 23 to the position of the rubber pad 28, the nozzle will not rotate relative to the nut due to the positioning effect of the base column, while the nut will rotate under the action of the rubber pad 28, thus connecting and assembling with the nozzle through a thread to form a module. This shortens the assembly process and improves assembly time. By using the simple rubber pad 28, the additional drive mechanism for rotating the nut and connecting the nozzle through a thread is eliminated, saving costs.

[0051] The assembly mechanism 3 includes a second clamping cylinder 31 for clamping the bellows, a first linear motion module 32, a first lifting slide cylinder 33 (prior art, a cylinder with a sliding plate), and a finger clamping cylinder 34. The finger clamping cylinder 34, located above the second clamping cylinder 31, clamps the threaded nozzle and nut assembled within the feeding channel 23. The first linear motion module 32 is fixedly mounted on the production frame and drives the first lifting slide cylinder 33 to move the finger clamping cylinder 34 back and forth between the feeding channel 23 and the bellows. The first linear motion module 32 has a sliding part (prior art). The cylinder body of the first lifting slide cylinder 33 is bolted to the sliding part of the first linear motion module 32 to achieve forward and backward movement; the cylinder body of the finger clamping cylinder 34 is bolted to the slide of the first lifting slide cylinder 33 to achieve lifting, thereby driving the assembled nozzle and nut to move up and down and forward and backward.

[0052] Reference Figure 2 and Figure 11The steel sleeve clamping mechanism 4 includes a shrinking machine 41 (existing technology), a third clamping cylinder 42, and a second lifting slide cylinder 43. The third clamping cylinder 42 has the same structure as the second clamping cylinder 31 and is used to clamp the bellows. The third clamping cylinder 42 is located above the corresponding clamping and transfer cylinder. The cylinder body of the second lifting slide cylinder 43 is fixedly installed on the production frame by bolts, and the slide of the third clamping cylinder 42 is connected to the slide of the second lifting slide cylinder 43 to achieve lifting. The shrinking machine 41 is located above the third clamping cylinder 42. The second lifting slide cylinder 43 can drive the third clamping cylinder 42 to drive the bellows to rise, so that the steel sleeve is inserted into the shrinking machine 41. Then the shrinking machine 41 runs to squeeze and compress the inside of the steel sleeve, so that the steel sleeve, bellows, and tip are clamped together.

[0053] Reference Figure 12 and Figure 13 The airtightness testing mechanism 6 is suitable for installation on the testing frame. Multiple airtightness testing mechanisms 6 are spaced apart on the testing frame. The testing and transfer mechanism 7 can sequentially transfer multiple bellows to multiple airtightness testing mechanisms 6 for testing. When a corresponding bellows is transferred to the last airtightness testing mechanism 6, the first airtightness testing mechanism 6 has already completed its testing. This increases the continuity of the testing process, shortens the testing interval, and improves testing efficiency. Multiple airtightness testing mechanisms 6 have the same structure; the following explanation uses a set of airtightness testing mechanisms 6 as an example.

[0054] The airtightness testing mechanism 6 includes a clamping and sealing assembly 61, a clamping and inflation assembly 62, and a differential pressure sensor 63. The clamping and sealing assembly 61 and the clamping and inflation assembly 62 are adapted to clamp and block both ends of the bellows, respectively, and the clamping and inflation assembly 62 is adapted to inflate the bellows with air. Both the clamping and sealing assembly 61 and the clamping and inflation assembly 62 are connected to the differential pressure sensor 63 to detect the pressure difference between the two ends of the bellows.

[0055] Reference Figure 12 and Figure 13The clamping and sealing assembly 61 includes a first finger-clamping cylinder 611, a first pushing cylinder 612, an airflow valve 613, and a first rubber plunger 614. The cylinder body of the first finger-clamping cylinder 611 is bolted to the testing frame, and the first finger-clamping cylinder 611 is adapted to clamp one side of the bellows. The first pushing cylinder 612 is located above the first finger-clamping cylinder 611, and the cylinder body of the first pushing cylinder 612 is bolted to the testing frame. The airflow valve 613 has an airflow inlet and an airflow outlet, and the airflow outlet is connected to the differential pressure sensor 63 via a hose. The first rubber plunger 614 is fixedly connected to the airflow valve 613, and the first rubber plunger 614 has a first airflow channel communicating with the bellows and the airflow inlet. The first pushing cylinder 612 is adapted to push the first rubber plunger 614 tightly into the bellows for sealing and blocking, so that airflow can only flow into the differential pressure sensor 63 through the first airflow channel.

[0056] The clamping inflation assembly 62 includes a second finger-clamping cylinder 621, a second pushing cylinder 622, a diverter valve 623, and a second rubber plunger 624. The cylinder body of the second finger-clamping cylinder 621 is bolted to the testing frame, and the second finger-clamping cylinder 621 is adapted to clamp the other side of the bellows. The second pushing cylinder 622 is located above the second finger-clamping cylinder 621, and its cylinder body is bolted to the testing frame. The diverter valve 623 is fixedly mounted on the telescopic rod of the second pushing cylinder 622. The diverter valve 623 has an interconnected air pump inlet and an air pressure detection port. The air pump inlet is connected to a corresponding air pump via a hose; the air pressure detection port is connected to the diverter valve 623 via a hose and a differential pressure sensor 63. The second rubber plunger is fixedly connected to the diverter valve 623, and the second rubber plunger has a second airflow channel communicating with the bellows and the air pump inlet. The second push cylinder 622 is adapted to push the second rubber plunger 624 tightly inserted into the bellows for sealing and blocking, so as to prevent air leakage in the covered tube from affecting the detection accuracy.

[0057] Reference Figure 12 and Figure 13 The differential pressure sensor 63 has a pressure-sensitive element inside. The pressure at both ends of the bellows will act on both sides of the pressure-sensitive element. The pressure difference will cause the pressure-sensitive element to deform or displace, which will then be converted into a standard electrical signal output, thereby determining whether the airtightness is qualified.

[0058] The inspection and transfer mechanism 7 includes a transfer frame 71, a second linear moving module 72, and two symmetrically spaced transfer clamping cylinders 73. The second linear moving module 72 is bolted to the top of the transfer frame 71. The second linear moving module 72 has a sliding part (existing technology). A slide cylinder is installed on the sliding part of the second linear moving module 72. The two transfer clamping cylinders 73 are fixedly installed on the slide of the slide cylinder, and thus move towards or away from the airtightness inspection mechanism 6 in the front-back direction, realizing the action of approaching or moving away from the corrugated pipe to clamp and transfer the corrugated pipe, that is, transferring the U-shaped corrugated pipe located on the finished product temporary storage assembly 9.

[0059] The implementation principle of the corrugated pipe production and testing equipment in this application embodiment is as follows: the production equipment and testing mechanism corresponding to the entire assembly process are integrated together. Each assembly mechanism is transferred to another through the production transfer mechanism 5, which shortens the overall production and assembly time. At the same time, the assembled corrugated pipe can be transferred to the airtightness testing mechanism 6 by the testing transfer mechanism 7 for automatic airtightness testing, which improves the continuity of production in each process. When the corrugated pipe is flared, the flaring assembly 12 can be integrated with the steel sleeve pressure ring 13 to achieve linkage, which can complete the two actions of pressure positioning and flaring. Before the production transfer mechanism 5 transfers the steel sleeve assembly mechanism 1 to the assembly component assembly mechanism 3, the nozzle and nut are automatically pre-assembled. When the feeding push cylinder 24 pushes the assembled nozzle and nut to the feeding position, the nut can rub against the rubber pad 28 on the side wall of the feeding channel 23, driving the nut to rotate automatically and form a whole with the nozzle threaded connection. This helps the assembly component assembly mechanism 3 to directly clamp and feed the material, reducing the need for additional drive mechanisms to drive the nut to rotate and the nozzle threaded connection, thus improving production and assembly efficiency.

[0060] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0061] In the description of this disclosure, 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," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure 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. Therefore, they should not be construed as limitations on this disclosure.

[0062] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0064] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A corrugated pipe production and testing equipment, characterized in that: The system includes a production frame, a steel sleeve assembly mechanism (1) integrated on the production frame, a pre-assembly mechanism (2), an assembly component assembly mechanism (3), a steel sleeve clamping mechanism (4), and a production transfer mechanism (5); the steel sleeve assembly mechanism (1) includes a steel sleeve mounting assembly (11), a flaring assembly (12), a steel sleeve lower pressure ring (13), and a first clamping cylinder (14) for clamping the bellows; the flaring assembly (12) is adapted to flare the bellows and, during the flaring process, drives the steel sleeve lower pressure ring (13) to move downward to press the steel sleeve into place; the pre-assembly mechanism (2) is adapted to attach the pointed end of the steel sleeve to the pre-assembly component assembly mechanism (3), the steel sleeve clamping mechanism (4), and the production transfer mechanism (5); the steel sleeve assembly mechanism (1) includes a steel sleeve mounting assembly (11), a flaring assembly assembly (12), a steel sleeve lower pressure ring (13), and a first clamping cylinder (14) for clamping the bellows; the flaring assembly assembly (12) is adapted to attach the pointed end of the steel sleeve to the pre-assembly component assembly mechanism (3), the steel sleeve clamping mechanism (4), and the production transfer mechanism (5); the steel sleeve assembly mechanism (1) includes a steel sleeve mounting assembly ... The nozzle and nut are assembled together and conveyed to the assembly mechanism (3). During the conveying process, the pre-assembly mechanism (2) is adapted to drive the nut to rotate for threaded connection with the nozzle; the assembly mechanism (3) is adapted to insert the threaded nozzle and nut into the bellows; the steel sleeve pressing mechanism (4) is adapted to press the steel sleeve of the bellows after the nozzle and nut are assembled; the production transfer mechanism (5) is adapted to transfer the bellows processed on the steel sleeve assembly mechanism (1), the assembly mechanism (3) and the steel sleeve pressing mechanism (4).

2. The corrugated pipe production and testing equipment according to claim 1, characterized in that: A material feeding block (111) is provided above the first clamping cylinder (14), and a material feeding channel (114) for the steel sleeve to fall is provided on the material feeding block (111); a steel sleeve cylinder (112) for stacking multiple steel sleeves and a steel sleeve loading cylinder (113) for pushing the steel sleeves into the material feeding channel one by one in the steel sleeve cylinder (112).

3. The corrugated pipe production and testing equipment according to claim 2, characterized in that: The flaring assembly (12) includes a flaring cylinder (121) and a flaring column (122) located above the feeding block (111). The flaring column (122) is concentrically arranged with the feeding channel (114). The flaring cylinder (121) is connected to the flaring column (122) to drive the flaring column (122) through the feeding channel (114) and insert it into the bellows for flaring. The steel sleeve lower pressure ring (13) is slidably sleeved on the flaring column (122). A protrusion (131) is fixedly provided on the inner wall of the steel sleeve lower pressure ring (13). The outer wall of the flaring column (122) is provided with a communicating vertical groove (123) and a rotating groove (124). The groove (123) extends axially along the flared post (122), the rotating groove (124) extends circumferentially along the flared post (122), and the protrusion (131) is adapted to slide into the vertical groove (123) and rotate into the rotating groove (124); when the steel sleeve is not pressed down and the flared post (122) is flared for the bellows, the protrusion (131) is located in the rotating groove (124), and the steel sleeve pressing ring (13) moves down synchronously with the flared post (122); when the steel sleeve is pressed down, the protrusion (131) rotates in the vertical groove (123), and the flared post (122) moves relative to the steel sleeve pressing ring (13).

4. The corrugated pipe production and testing equipment according to claim 3, characterized in that: The first clamping cylinder (14) has a first driving block (15) at the top of its gripper to drive the protrusion (131) from the rotating groove (124) to the vertical groove (123). The first driving block (15) has a first driving inclined surface at the top. The bottom of the steel sleeve pressure ring (13) has a first mating inclined surface groove (132) for the first driving inclined surface to be inserted and to cooperate with the first driving inclined surface. The unloading block (111) has a second driving block (16) at intervals above it to drive the protrusion (131) from the vertical groove (123) to the rotating groove (124). The bottom of the second driving block (16) has a second driving inclined surface. The top of the steel sleeve pressure ring (13) has a second mating inclined surface groove (133) for the second driving inclined surface to be inserted and to cooperate with the second driving inclined surface.

5. The corrugated pipe production and testing equipment according to claim 3, characterized in that: The flared column (122) includes a tapered section and a cylindrical section. The tapered section is located at the bottom of the cylindrical section to drive the steel sleeve and the end of the bellows to maintain a concentric fit. The outer diameter of the cylindrical section is smaller than the inner diameter of the steel sleeve and larger than the inner diameter of the bellows.

6. The corrugated pipe production and testing equipment according to claim 1, characterized in that: The pre-assembly mechanism (2) includes a first vibrating feeding plate (21) for automatically feeding the nozzle, a second vibrating feeding plate (22) for automatically feeding the nut, a feeding channel (23), a feeding push cylinder (24), a nozzle clamping feeding assembly (25), and a nut clamping feeding assembly (26). A push plate is installed on the telescopic rod of the feeding push cylinder (24). The nozzle clamping feeding assembly (25) is adapted to move the nozzle at the outlet of the first vibrating feeding plate (21) into the feeding channel (23). The nut clamping feeding assembly (26) is adapted to sleeve the nut at the outlet of the second vibrating feeding plate (22) onto the nozzle located in the feeding channel (23). The feeding push cylinder (24) is adapted to push the assembled nozzle and nut in the feeding channel (23) to the assembly assembly mechanism (3).

7. The corrugated pipe production and testing equipment according to claim 6, characterized in that: The side wall of the feeding channel (23) is provided with a rubber pad (28). When the feeding push cylinder (24) drives the nozzle and nut to move in the feeding channel (23) to the position of the rubber pad (28), the rubber pad (28) has close contact with the outer wall of the nut to drive the nut to rotate and connect with the nozzle threadedly.

8. The corrugated pipe production and testing equipment according to claim 1, characterized in that: The assembly mechanism (3) includes a second clamping cylinder (31) for clamping the bellows, a first linear moving module (32), a first lifting slide cylinder (33), and a finger clamping cylinder (34). The finger clamping cylinder (34) is located above the second clamping cylinder (31) and is used to clamp the nozzle and nut assembled by the pre-assembly mechanism (2). The first lifting slide cylinder (33) is used to drive the finger clamping cylinder (34) to move up and down. The first linear moving module (32) is used to drive the first lifting slide cylinder (33) to drive the finger clamping cylinder (34) to reciprocate between the pre-assembly mechanism (2) and the bellows.

9. The corrugated pipe production and testing equipment according to any one of claims 1-8, characterized in that: It also includes an airtightness testing mechanism (6) and a testing and transfer mechanism (7) located on one side of the production frame; the airtightness testing mechanism (6) is adapted to test the airtightness of the bellows by pressure difference; the testing and transfer mechanism (7) is adapted to transfer the bellows, which has been processed by the steel sleeve crimping mechanism (4) and is U-shaped, to the airtightness testing mechanism (6) for testing.

10. The corrugated pipe production and testing equipment according to claim 9, characterized in that: The airtightness detection mechanism (6) includes a clamping and sealing assembly (61), a clamping and inflation assembly (62), and a differential pressure sensor (63). The clamping and sealing assembly (61) and the clamping and inflation assembly (62) are adapted to clamp and block both ends of the bellows, respectively. The clamping and inflation assembly (62) is adapted to inflate the bellows. Both the clamping and sealing assembly (61) and the clamping and inflation assembly (62) are connected to the differential pressure sensor (63) to detect the pressure difference between the two ends of the bellows.

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