An automatic pipe end forming and testing device and forming and testing method thereof

Abstract

The present invention discloses an automated tube end forming and detection equipment and a forming detection method thereof, including a forming system, the forming system including a cutting mechanism and a forming station 1, a forming station 2, and a shaping station arranged along the flow direction of the workpiece, the cutting mechanism can drive the workpiece to flow through the forming station 1, the forming station 2, and the shaping station in sequence, the forming station 1 is provided with a sheath 1, a polyurethane rod, and a forming cylinder 1, the outer side of the polyurethane rod is provided with a forming cylinder 1, and the telescopic end of the forming cylinder 1 is connected with a sheath 1 that can move toward or away from the polyurethane rod. In the present invention, by adopting a continuous shaping method of polyurethane preforming plus a forming station 2 and a shaping station, the original high-precision tube end forming special machine equipment is replaced to iterate and innovate the production process, thereby improving the process efficiency and reducing the equipment cost.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe end forming equipment, and more specifically to an automated pipe end forming and testing equipment and a forming and testing method thereof. Background Art

[0002] Existing metal pipe fittings need to go through multiple processing steps during the forming process. For example, the pipe needs to be cut to a fixed length to form a straight pipe blank, then the pipe blank is oiled, and finally the end is formed. This process has the following technical problems:

[0003] (1) Manual feeding production: The incoming material is a tube material. The film is manually applied to the molding part of the tube end of the product and a specific counterweight mold is clamped on the upper mouth of the product to prevent the product from being too light and the bottom of the product from not fitting with the mold during the production process;

[0004] (2) The product is placed in the mold cavity, and the port expansion and contraction equipment automatically performs the tube end forming process. When the tube end is formed, the mold has 8 or 12 petals. In order to ensure that the tube end forming size is consistent, the product is rotated 10° to 15° after each clamping and bulging of the product, and then clamped and bulged again. Each time the product is clamped and bulged, it takes 2-3 seconds, and the equipment running time to complete a tube end forming process is about 50 seconds, which is too long; after completing the short tube forming process, it is necessary to take out the product, tear off the film, and remove the counterweight, which has low production efficiency;

[0005] (3) Products are sent to the cleaning equipment in batches for cleaning and oil removal. The lifting machine needs to be operated manually to shake the products in the material frame up and down to achieve the purpose of clearness and fullness. The cleaning tank and the rinsing tank repeat the above operation. The labor intensity of moving the products up and down is large, and it is also easy to damage the products. Then put them in a ventilated place for about 24 hours to dry naturally. Most of the products are iron parts, which are easy to rust.

[0006] (4) After completion, manual inspection is performed using a jig or measuring tool. Each product needs to be measured and identified using a jig or measuring tool, which requires a high level of concentration.

[0007] The above production methods require the cooperation of multiple people to complete, which takes up a lot of manpower and equipment, and the equipment is special and not universal. Summary of the invention

[0008] The technical problem to be solved by the present invention is how to improve the efficiency and precision of pipe end forming.

[0009] The present invention solves the above technical problems through the following technical means: an automated pipe end forming and detection equipment, including a forming system, the forming system including a cutting mechanism and a forming station 1, a forming station 2, and a shaping station arranged along the flow direction of the workpiece, the cutting mechanism can drive the workpiece to flow through the forming station 1, the forming station 2, and the shaping station in sequence, the forming station 1 is provided with a sheath 1, a polyurethane rod, and a forming cylinder 1, the outer side of the polyurethane rod is provided with a forming cylinder 1, the telescopic end of the forming cylinder 1 is connected with a sheath 1 that can move toward or away from the polyurethane rod, the forming station 2 is provided with a profiling mold 1, the shaping station is provided with a profiling mold 2, a sheath 2, and a forming cylinder 2, the outer side of the profiling mold 2 is provided with a forming cylinder 2, and the telescopic end of the forming cylinder 2 is connected with a sheath 2 that can move toward or away from the profiling mold 2.

[0010] As a preferred technical solution, it also includes a cleaning system, which is located downstream of the molding system. The cleaning system includes a cleaning table, a degreasing tank, and a transfer mechanism. The cleaning table is provided with a degreasing material loading and unloading station, a rinsing material loading and unloading station, and an air-drying material loading and unloading station in sequence. The transfer mechanism can drive the product to flow through the degreasing material loading and unloading station, the rinsing material loading and unloading station, and the air-drying material loading and unloading station in sequence. The degreasing material loading and unloading station and the rinsing material loading and unloading station are both provided with a degreasing tank. The cleaning table is provided with a rotating disk and a divider that drives the rotating disk to rotate with its axis as the rotating axis. The transfer mechanism can also drive the product to immerse in or exit the degreasing tank.

[0011] As a preferred technical solution, the moving end of the transfer mechanism is connected to a thumb cylinder, and the flat clamping fingers of the thumb cylinder are fixedly connected to a clamping block and an external connecting plate, the external connecting plate is located on the top of the clamping block, and a plurality of first air blowing holes are provided at the bottom of the external connecting plate, and a plurality of obliquely arranged second air blowing holes are provided at the bottom of the clamping block, and both the first air blowing holes and the second air blowing holes are connected to an air source.

[0012] As a preferred technical solution, it also includes an oiling system arranged upstream of the molding system, the oiling system includes a support frame, an oiling device, an oiling positioning seat, and an external oiling positioning mechanism, the top of the support frame is fixed with an oiling positioning seat and an external oiling positioning mechanism, the external oiling mechanism can move toward or away from the oiling positioning seat, and the support frame is also fixedly connected to an oiling device, the oiling device is connected to the oiling positioning seat and the external oiling positioning mechanism and can oil the inner and outer walls of the workpiece.

[0013] As a preferred technical solution, the oiling positioning seat is circumferentially provided with oiling holes connected to the oil supply equipment, and the external oiling positioning mechanism includes a positioning clamp, a movable cylinder, and a felt. The movable cylinder is fixedly connected to the top of the support frame, and the telescopic end of the movable cylinder faces the oiling positioning seat and is fixedly connected with the positioning clamp. The positioning clamp is fixedly connected with the felt at one end facing the oiling positioning seat, and the felt is connected to the oil supply equipment.

[0014] As a preferred technical solution, a feeding system is provided upstream of the oiling positioning seat, and the feeding system includes a conveyor line, a positioning plate, and a detection switch. A card plate is provided at the input end of the conveyor line, and a positioning plate is provided at the output end thereof, and a detection switch is provided on the positioning plate.

[0015] As a preferred technical solution, a detection system is provided downstream of the cleaning system, and the detection system includes a detection table and a marking unit fixed on the detection table, and the marking unit includes a lower fixed seat, an upper pressure head, a positioning seat, a marking machine, and a clamping cylinder. A clamping cylinder is provided on the top of the lower fixed seat, and the telescopic end of the clamping cylinder is fixedly connected to the upper pressure head. A marking machine and a positioning seat are provided on the outside of the lower fixed seat, and the positioning seat can move toward or away from the lower fixed seat.

[0016] As a preferred technical solution, the detection system also includes a visual detection unit, which includes a light source, a detection camera, and a positioning tool. The positioning tool is fixedly connected to the detection table, and detection cameras are provided on both sides of the positioning tool and a light source is provided on the top.

[0017] As a preferred technical solution, a discharge system is provided downstream of the detection system, and the discharge system includes a material sorting robot, an unqualified material discharge mechanism, and a qualified material discharge mechanism. The material sorting robot can drive the workpiece to flow into the unqualified material discharge mechanism or the qualified material discharge mechanism.

[0018] A forming and testing method for an automated pipe end forming and testing device comprises the following steps:

[0019] S1. Load the workpiece or the equipment to the feeding station of the feeding system, drive the workpiece to its output end through the conveyor line, and after the detection switch detects that the workpiece is in place, the workpiece is moved to the oiling station of the oiling system through the handling mechanism;

[0020] S2, the handling mechanism moves the workpiece to the oiling positioning seat, oils the inside and outside of the workpiece, and the workpiece enters the forming station after the oiling is completed;

[0021] S3, the transport mechanism moves the oiled workpiece to the molding station in the molding system, and flows through the molding station 1, molding station 2, and shaping station respectively, gradually pressing the product shape and shaping it to the set size;

[0022] S4, the formed workpiece flows into the degreasing loading and unloading station of the cleaning system, and the product is cleaned in the degreasing tank of the degreasing loading and unloading station and the rinsing loading and unloading station in turn, and then put into the air-drying loading and unloading station by the loading and unloading transfer robot;

[0023] S5. The air-dried workpiece flows into the airtight unit, visual inspection unit and marking unit of the inspection system. Through crimping, ventilation and leak detection analysis by professional equipment, it is determined whether the workpiece is qualified and marks are made on the surface of qualified products.

[0024] S6. Products that fail to meet the standards detected by the visual inspection unit and the airtight unit flow into the unqualified unloading mechanism, and qualified products flow into the qualified unloading mechanism.

[0025] The beneficial effects of the present invention are:

[0026] (1) In the present invention, by adopting the continuous shaping method of the polyurethane preforming and shaping two-station and shaping station, the original production process iteration and innovation that requires high-precision pipe end forming special equipment is replaced, the process efficiency is improved, and the equipment cost is reduced.

[0027] (2) In the present invention, oiling is applied inside and outside the workpiece, and the process is achieved at one time at the same workstation using an electric oil supply device. The oiling efficiency is high and meets production requirements.

[0028] (3) In the present invention, a dedicated transfer device is used in the mold of the tube end forming process to simultaneously pick up and place the products, which shortens the time for picking up and placing the materials, improves production efficiency, and does not increase the number of workstations and waste time.

[0029] (4) In the present invention, by providing the first air blowing hole and the second air blowing hole, oil can be discharged by blowing air, thereby reducing secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the structure of a feeding system provided in an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the structure of an oiling system provided in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the structure of a molding system provided in an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the cleaning system structure provided by an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of the structure of a degreasing tank provided in an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the thumb cylinder structure provided by an embodiment of the present invention;

[0037] Figure 8 A schematic diagram of the structure of the second blowing hole provided in an embodiment of the present invention;

[0038] Fig. 9 A schematic diagram of the structure of a detection system provided by an embodiment of the present invention;

[0039] Fig.10 A schematic diagram of the structure of a marking unit provided in an embodiment of the present invention;

[0040] Fig.11 A schematic diagram of the structure of a discharging system provided in an embodiment of the present invention;

[0041] Fig.12 A schematic diagram of airtightness detection provided by an embodiment of the present invention;

[0042] Fig.13 A schematic diagram of leak detection pressure variation provided by an embodiment of the present invention;

[0043] Fig.14 A schematic diagram of the positioning tool structure provided by an embodiment of the present invention;

[0044] Figure numbers: 1. Feeding system; 11. Conveyor line; 12. Positioning plate; 13. Detection switch; 2. Oiling system; 21. Support frame; 22. Oiling equipment; 23. Oiling positioning seat; 24. Oiling hole; 25. External oiling positioning mechanism; 251. Positioning clamp; 252. Moving cylinder; 253. Felt; 3. Forming system; 31. Forming table; 32. Sheath 1; 33. Polyurethane rod; 34. Forming cylinder 1; 35. Profiling mold 1; 36. Profiling mold 2; 37. Sheath 2; 38. Forming cylinder 2; 39. Transfer mechanism; 4. Handling mechanism; 41. Six-axis robot; 42. Picker; 5. Cleaning system; 51. Cleaning table; 52. Degreasing tank; 53. Material handling manipulator; 54. Thumb Cylinder; 55, clamping block; 56, external connecting plate; 57, first blowing hole; 58, second blowing hole; 59, rotating disk; 6, detection system; 61, airtight unit; 611, lower fixing seat; 612, upper pressure head; 613, positioning seat; 614, marking machine; 615, clamping cylinder; 62, visual inspection unit; 621, light source; 622, inspection camera; 623, positioning tool; 63, inspection table; 641, main line; 642, branch line; 643, pressure reducing valve; 644, charging valve; 645, detection pressure sensor; 646, air release valve; 647, balance valve; 648, differential pressure sensor; 7, unloading system; 71, material dispensing robot; 72, unqualified unloading mechanism; 73, qualified unloading mechanism. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1 , an automated tube end forming and testing equipment, comprising a feeding system 1, an oiling system 2, a forming system 3, a transport mechanism 4, a cleaning system 5, a testing system 6, and a discharging system 7 which are sequentially arranged along the flow direction of the workpiece;

[0047] See also Figure 2 The feeding system 1 includes a conveyor line 11, a positioning plate 12, and a detection switch 13. The conveyor line 11 can be a commercially available conveying mechanism, such as a belt conveyor, etc. A card plate is provided at the input end of the conveyor line 11, and a positioning plate 12 is provided at the output end of the conveyor line 11. The positioning plate 12 is provided with a detection switch 13, and the detection switch 13 is used to detect whether the workpiece is in place; the card plate and the positioning plate 12 are separated by a partition. In this embodiment, three parallel conveying channels are formed, and a plurality of limit frames for limiting the position of the workpiece are also provided above the conveying channels;

[0048] The workpiece is loaded by people or equipment to the feeding station of the feeding system 1, and the conveyor line 11 moves forward, and the front material is pushed to the front positioning plate 12 by pushing between the workpieces. The detection switch 13 on the positioning plate 12 detects whether the workpiece is in place. If it is in place, the workpiece is moved to the oiling station of the oiling system 2 through the handling mechanism 4;

[0049] The transport mechanism 4 includes a six-axis robot 41 and a picker 42 . The free end of the six-axis robot 41 is fixedly connected with the picker 42 . Both the six-axis robot 41 and the picker 42 are prior arts.

[0050] See also Figure 3The oiling system 2 includes a support frame 21, an oiling device 22, an oiling positioning seat 23, an oiling hole 24, and an external oiling positioning mechanism 25. The support frame 21 is generally a door-shaped frame structure. The support frame 21 includes a vertically fixed horizontal section and a vertical section. The vertical section of the support frame 21 is fixedly connected to the oiling device 22. The top of the horizontal section of the support frame 21 is fixedly connected to the oiling positioning seat 23. The oiling positioning seat 23 is circumferentially provided with oiling holes 24. The top of the horizontal section of the support frame 21 is also fixedly connected to two external oiling positioning mechanisms 25. The two external oiling positioning mechanisms 25 are respectively located at the oiling The outer side of the oil positioning seat 23 is oppositely arranged. The outer oiling positioning mechanism 25 includes a positioning clamp 251, a movable cylinder 252, and a felt 253. The movable cylinder 252 is fixedly connected to the top of the support frame 21. The telescopic end of the movable cylinder 252 faces the oiling positioning seat 23 and is fixedly connected with the positioning clamp 251. The positioning clamp 251 is fixedly connected with the felt 253 at one end facing the oiling positioning seat 23. The felt 253 and the oiling positioning seat 23 are connected to the oil supply device 22 through an oil pipeline, so as to supply oil to the felt 253 and the oiling hole 24 of the oiling positioning seat 23.

[0051] The picker 42 on the six-axis robot 41 takes the positioned workpiece from the output end of the feeding system 1 and moves it to the oiling positioning seat 23 of the oiling system 2. After the workpiece is fixed by the positioning clamps 251 of the two external oiling positioning mechanisms 25, the oil supply device 22 works, injects oil into the oiling positioning seat 23 and transports it to the inner wall of the workpiece through the oiling hole 24, injects oil into the felt 253 and infiltrates the outer wall of the workpiece. The workpiece is oiled and enters the molding station after completion.

[0052] See also Figure 4 The molding system 3 includes a molding table 31, a sheath 1 32, a polyurethane rod 33, a molding cylinder 1 34, a profiling mold 1 35, a profiling mold 2 36, a sheath 2 37, a molding cylinder 2 38, and a transfer mechanism 39. The molding table 31 is provided with three molding stations, namely, a molding station 1, a molding station 2, and a shaping station. Among them, the molding station 1 uses polyurethane to expand the workpiece to a preliminary shape, the molding station 2 is used for preforming the hump, and the shaping station is used for hump finishing of the workpiece from the molding station 2, and closing and shaping the mouth of the workpiece; the molding station 1, the molding station 2, and the shaping station are arranged in sequence along the top of the molding table 31; a transfer mechanism 39 is suspended on the molding table 31, and the transfer mechanism 39 is a manipulator or a three-axis mobile platform or a two-axis mobile platform in the existing mechanism;

[0053] Two opposed molding cylinders 34 are fixedly connected to the top of the molding table 31. The telescopic ends of the two molding cylinders 34 are fixedly connected to the sheaths 32. A polyurethane rod 33 is provided between the two sheaths 32. The polyurethane rod 33 is fixedly connected to the molding table 31. The sheath 32, the polyurethane rod 33 and the molding cylinder 34 are located at the molding station. A press is also provided on the top of the polyurethane rod 33. The press can be fixedly connected to the transfer mechanism 39. After the workpiece is inserted into the polyurethane rod 33 by the transfer mechanism 39, the two molding cylinders 34 drive the sheaths 32 to fix the workpiece. The polyurethane rod 33 is squeezed by the press, so that the workpiece expands in the shape of the two sheaths 32 and forms a bulge, i.e., a hump-shaped structure, in the circumferential direction, thereby obtaining a preliminary shape.

[0054] A profiling die 35 is fixedly connected to the top of the forming table 31. A profiling cavity is provided in the profiling die 35. The press machine applies pressure from top to bottom toward the workpiece to complete the preliminary shaping of the hump while ensuring that the workpiece does not wrinkle or crack. The profiling die 35 is located at the forming station.

[0055] The top of the forming table 31 is fixedly connected with a profiling die 36, a sheath 37, and two forming cylinders 39. The profiling die 36, the sheath 37, and the two forming cylinders 39 are located at the shaping station. The two forming cylinders 39 are arranged opposite to each other. The telescopic ends of the two forming cylinders 39 are fixedly connected with the sheath 37. The profiling die 36 is located between the two sheaths 37. The hump and mouth of the workpiece are shaped by the cooperation of the profiling die 36 and the two sheaths 37, so as to obtain the required accuracy. Workpiece; adopts the continuous shaping method of polyurethane preforming and forming two stations and shaping station, which replaces the original high-precision tube end forming special machine equipment required for production process iteration and innovation, so that the efficiency of this process is improved by 100%, the equipment cost is reduced by 50%, and general equipment can be used for production. It should be noted that the formed workpiece is moved by the six-axis robot to the cleaning station of the cleaning system 5; the connection between the polyurethane rod 33, the profiling mold 1 35, and the profiling mold 2 36 is parallel to the length direction of the forming table 31.

[0056] See also Figure 5 , Figure 6 , Figure 7 , Figure 8The cleaning system 5 includes a cleaning table 51, a degreasing tank 52, a material taking and discharging manipulator 53, a thumb cylinder 54, a clamping block 55, an external connecting plate 56, a first blowing hole 57, and a second blowing hole 58. Two degreasing tanks 52 are provided on the cleaning table 51. The degreasing tanks 52 are ultrasonic degreasing tanks in the prior art. The cleaning stations include a degreasing material taking and discharging station, a rinsing material taking and discharging station, and an air-drying material taking and discharging station. The two degreasing tanks 52 are respectively located at the degreasing material taking and discharging station and the rinsing material taking and discharging station; the material taking and discharging station The manipulator 53 is a manipulator or a three-axis mobile platform or a two-axis mobile platform in the existing mechanism. The mobile end of the material taking and placing manipulator 53 is fixedly connected with a thumb cylinder 54. The material taking and placing manipulator 53 can drive the thumb cylinder 54 to realize the height direction, length direction or height direction, length direction, width direction or multi-dimensional adjustment of the cleaning table 51. The two flat clamping fingers of the thumb cylinder 54 are fixedly connected with a clamping block 55 and an external connecting plate 56. The external connecting plate 56 is located at the top of the clamping block 55. A plurality of first blowing holes 57 are opened at the bottom of the external connecting plate 56. A plurality of second blowing holes 58 arranged obliquely are provided at the bottom of the clamping block 55. The first blowing holes 57 and the second blowing holes 58 are both connected to the air source. A rotating disk 59 is rotatably connected to the cleaning table 51. A driving motor is fixedly connected to the cleaning table 51. The output end of the driving motor is transmission-connected to the rotating disk 59 and can drive the rotating disk 59 to rotate with its axis as the rotating axis. The rotating disk 59 is located at the top of the degreasing tank 52, and it is away from the degreasing tank 52. One end of the workpiece is fixedly connected to a plurality of placement positions, and a workpiece is placed on each placement position; when the workpiece in the degreasing and unloading station is taken out from the degreasing tank 52 by the unloading and unloading robot 53, the first blowing hole 57 and the second blowing hole 58 can simultaneously blow air to the oil stains on the projection surface of the workpiece in the degreasing tank 52 to prevent the oil stains from adhering to the surface of the workpiece, and after taking it out, it is sent to the degreasing tank 52 in the rinsing and unloading station for rinsing, and after rinsing, it is sent to the air-drying and unloading station by the unloading and unloading robot 53;

[0057] Specifically, the picker 42 on the six-axis robot 41 takes the workpiece out of the shaping station and puts it into the degreasing and discharging station of the cleaning system 5. The tooling for degreasing and rinsing the products is driven by a divider, and the number of stations and the beat are matched according to the degreasing demand time; the degreasing and rinsing discharging stations are both provided with a first blowing hole 57 of the external connecting plate 56, which performs pneumatic degreasing and blowing to remove the oil floating on the water surface, so as to prevent the cleaned products from being contaminated by the oil floating on the water surface when the materials are taken; the products pass through the degreasing tanks 52 of the degreasing and discharging stations and the rinsing discharging stations in turn, and then pass through the discharging and discharging transfer robot 53 and are put into the air-drying discharging station;

[0058] When taking materials, the water stains inside the workpiece are blown dry through the second blowing hole 58, and the water stains outside the workpiece are blown dry through the first blowing hole 57 at the air-drying discharge station. Since the temperature of the product is 60-65°C during cleaning, the product can be cooled by air drying during the air-drying process, and a small amount of undried water stains on the product can be removed by cooling the temperature of the product itself.

[0059] See also Fig. 9 , Fig.10 The detection system 6 includes an airtight unit, a visual inspection unit 62, a marking unit 61, and a detection table 63. The detection table 63 is provided with a marking unit 61 and a visual inspection unit 62. The marking unit 61 is provided with a marking station, and the visual inspection unit 62 is provided with a visual inspection station. The marking unit 61 is located upstream of the visual inspection unit 62.

[0060] See also Fig.10 , Fig.12 The airtight unit includes a main line 641, a branch line 642, a pressure reducing valve 643, an air charging valve 644, a detection pressure sensor 645, an air release valve 646, a balance valve 647, and a differential pressure sensor 648. One end of the main line 641 is connected to the gas source, and the other end is connected to the atmospheric environment. The main line 641 is provided with a pressure reducing valve 643, an air charging valve 644, a detection pressure sensor 645, and an air release valve 646 in sequence. The main line 641 is connected to two branch lines 642. Both branches 642 are provided with a balance valve 647, which are respectively connected to a standard part and a part to be tested. The two branches are connected to a differential pressure sensor 648;

[0061] The marking unit 61 includes a lower fixed seat 611, an upper pressure head 612, a positioning seat 613, a marking machine, and a pressing cylinder 615. The lower fixed seat 611 is fixedly connected to the testing table 63. The pressing cylinder 615 is fixedly connected to the testing table 63. The telescopic end of the pressing cylinder 615 faces the lower fixed seat 611 and is fixedly connected to the upper pressure head 612. Two positioning seats 613 are arranged on the outer side of the lower fixed seat 611. The marking machine is fixedly connected to the testing table 63. The marking machine is located on the outer side of the lower fixed seat 611. The marking machine can be an automatic spray head ST-60.5, which can mark the product. The positioning seat 613 is used for positioning the workpiece. The pressing cylinder 615 can drive the upper pressure head 612 to press the workpiece, so that qualified products can be marked by the marking machine, and unqualified products can be marked by the marking machine.

[0062] See also Fig.10 , Fig.14The visual inspection unit 62 includes a light source 621, a detection camera 622, and a positioning tool 623. The positioning tool 623 is fixedly connected to the detection table 63. Detection cameras 622 are provided on both sides of the positioning tool 623, and a light source 621 is provided on the top. The visual inspection unit 62 detects the outer diameter, inner diameter, position, appearance inspection and other information of the product through visual photography analysis to determine whether the product is qualified. The positioning tool 623 includes three positioning plates, and the end areas of the three positioning plates form the visual inspection positioning area of ​​the product.

[0063] See also Fig.11 The material discharge system 7 includes a material sorting robot 71, an unqualified material discharge mechanism 72, and a qualified material discharge mechanism 73. The material sorting robot 71 is a robot or a three-axis mobile platform or a two-axis mobile platform in the existing mechanism. The unqualified material discharge mechanism 72 and the qualified material discharge mechanism 73 are both inclined guide racks. The material sorting robot 71 guides unqualified products detected by the visual inspection unit 62 into the unqualified material discharge mechanism 72, and the qualified products into the qualified material discharge mechanism 73. In this embodiment, two unqualified material discharge mechanisms 72 and one qualified material discharge mechanism 73 are provided.

[0064] The molding detection method comprises the following steps:

[0065] S1. The workpiece is loaded by people or equipment to the feeding station of the feeding system 1, and the conveyor line 11 moves forward. By pushing between the workpieces, the front material is pushed to the front positioning plate 12. The detection switch 13 on the positioning plate 12 detects whether the workpiece is in place. If it is in place, the workpiece is moved to the oiling station of the oiling system 2 through the handling mechanism 4;

[0066] S2, the picker 42 on the six-axis robot 41 takes the positioned workpiece from the output end of the feeding system 1 and moves it to the oiling positioning seat 23 of the oiling system 2. After the workpiece is fixed by the positioning clamps 251 of the two external oiling positioning mechanisms 25, the oiling device 22 works to inject oil into the oiling positioning seat 23 and transport it to the inner wall of the workpiece through the oiling hole 24, and inject oil into the felt 253 and infiltrate the outer wall of the workpiece. The workpiece is oiled and enters the molding station after completion;

[0067] S3, the picker 42 on the six-axis robot 41 moves the oiled workpiece to the molding station in the molding system 3, and flows through the molding station 1, the molding station 2, and the shaping station respectively, gradually pressing the product shape to the theoretical required size;

[0068] S4, the picker 42 on the six-axis robot 41 takes the workpiece out of the shaping station and puts it into the degreasing and unloading station of the cleaning system 5. The product passes through the degreasing tank 52 of the degreasing and unloading station and the rinsing and unloading station in turn, and then passes through the unloading and unloading transfer manipulator 53 and is put into the air-drying and unloading station;

[0069] S5, the picker 42 on the six-axis robot 41 takes the workpiece out from the air-drying and unloading station and sends it to the airtight unit, visual inspection unit 62, and marking unit of the inspection system 6, through crimping, ventilation, leak detection analysis with professional equipment, qualification judgment, and marking of the surface of qualified products;

[0070] Among them, the airtight unit adopts a differential pressure leak detector. The gas circuit principle of the differential pressure leak detector is as follows: Fig.12 As shown, the standard part in this embodiment can be a workpiece or a specific product that is confirmed to be qualified and can be used as a standard for measuring other workpieces that are the same as it;

[0071] At the beginning of the test, the dry and clean air source gas is adjusted to the required test pressure by the precision pressure regulating valve, and then enters the interior of the standard part and the test piece through the charging valve and the balancing valve. This process is called "inflation". During this process, the size of the charging pressure is detected by the test pressure sensor. It should be noted that insufficient inflation time will cause insufficient inflation inside the workpiece, which is not conducive to the stability of the internal compressed air, thereby affecting the accuracy of the test results.

[0072] After the standard part and the tested part are filled with gas of a certain pressure, close the inflation valve and let it stand for a while. The gas in the entire space including the standard part and the tested part reaches a stable state. This process is called "Balance 1". Close the balancing valve and let it stand for a while. Let the standard part and the tested part reach a stable state respectively. This process is "Balance 2". During the balancing process, the gas in the workpiece cavity is in an oscillating state due to rapid filling; this period of time is related to the internal volume of the workpiece. Generally, the larger the internal volume, the longer the setting time.

[0073] During the detection process, the specific leakage amount of the workpiece is measured according to the change of the differential pressure sensor, and then the qualified workpiece is judged. Fig.13 As shown, since the standard part and the workpiece being tested have the same shape and size, and the external environmental conditions at both ends are exactly the same during the detection process, this test method can eliminate the influence of environmental factors such as temperature and vibration, thereby improving the measurement accuracy.

[0074] S6. Products that fail to meet the requirements of the visual inspection unit 62 and the airtight unit flow into the unqualified unloading mechanism 72, and qualified products flow into the qualified unloading mechanism 73.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated pipe end forming and testing device, characterized in that: The invention comprises a molding system, which comprises a cutting and shifting mechanism and a molding station 1, a molding station 2 and a shaping station arranged along the flow direction of the workpiece. The cutting and shifting mechanism can drive the workpiece to flow through the molding station 1, the molding station 2 and the shaping station in sequence. The molding station 1 is provided with a sheath 1, a polyurethane rod and a molding cylinder 1. A molding cylinder 1 is provided on the outer side of the polyurethane rod. A sheath 1 capable of moving toward or away from the polyurethane rod is connected to the telescopic end of the molding cylinder 1. A profiling mold 1 is provided on the molding station 2. A profiling mold 2, a sheath 2 and a molding cylinder 2 are provided on the shaping station. A molding cylinder 2 is provided on the outer side of the profiling mold 2. A sheath 2 capable of moving toward or away from the profiling mold 2 is connected to the telescopic end of the molding cylinder 2.

2. The automatic tube end forming and testing equipment according to claim 1, characterized in that: It also includes a cleaning system, which is located downstream of the molding system. The cleaning system includes a cleaning table, a degreasing tank, and a transfer mechanism. The cleaning table is provided with a degreasing material loading and unloading station, a rinsing material loading and unloading station, and an air-drying material loading and unloading station in sequence. The transfer mechanism can drive the product to flow through the degreasing material loading and unloading station, the rinsing material loading and unloading station, and the air-drying material loading and unloading station in sequence. The degreasing material loading and unloading station and the rinsing material loading and unloading station are both provided with a degreasing tank. The cleaning table is provided with a rotating disk and a divider that drives the rotating disk to rotate with its axis as the rotating axis. The transfer mechanism can also drive the product to immerse in or exit the degreasing tank.

3. The automatic tube end forming and testing equipment according to claim 2 is characterized in that: The movable end of the transfer mechanism is connected to a thumb cylinder, and the flat clamping fingers of the thumb cylinder are fixedly connected to a clamping block and an external connecting plate. The external connecting plate is located on the top of the clamping block, and a plurality of first air blowing holes are provided at the bottom of the external connecting plate. A plurality of obliquely arranged second air blowing holes are provided at the bottom of the clamping block, and both the first air blowing holes and the second air blowing holes are connected to an air source.

4. The automatic tube end forming and testing equipment according to claim 3 is characterized in that: It also includes an oiling system arranged upstream of the molding system, the oiling system includes a support frame, an oiling device, an oiling positioning seat, and an external oiling positioning mechanism, the top of the support frame is fixed with an oiling positioning seat and an external oiling positioning mechanism, the external oiling mechanism can move toward or away from the oiling positioning seat, and the support frame is also fixedly connected with an oiling device, the oiling device is connected to the oiling positioning seat and the external oiling positioning mechanism and can oil the inner and outer walls of the workpiece.

5. The automatic tube end forming and testing equipment according to claim 4, characterized in that: The oiling positioning seat is circumferentially provided with oiling holes connected to the oil supply equipment. The external oiling positioning mechanism includes a positioning clamp, a movable cylinder, and a felt. The movable cylinder is fixedly connected to the top of the support frame. The telescopic end of the movable cylinder faces the oiling positioning seat and is fixedly connected with the positioning clamp. The positioning clamp is fixedly connected with the felt at one end facing the oiling positioning seat, and the felt is connected to the oil supply equipment.

6. The automatic tube end forming and testing equipment according to claim 5, characterized in that: A feeding system is provided upstream of the oiling positioning seat, and the feeding system includes a conveying line, a positioning plate, and a detection switch. A card plate is provided at the input end of the conveying line, and a positioning plate is provided at the output end thereof. A detection switch is provided on the positioning plate.

7. The automatic tube end forming and testing equipment according to claim 6, characterized in that: A detection system is provided downstream of the cleaning system, and the detection system includes a detection table and a marking unit fixed on the detection table, and the marking unit includes a lower fixed seat, an upper pressure head, a positioning seat, a marking machine, and a clamping cylinder. A clamping cylinder is provided on the top of the lower fixed seat, and the telescopic end of the clamping cylinder is fixedly connected to the upper pressure head. A marking machine and a positioning seat are provided on the outer side of the lower fixed seat, and the positioning seat can move toward or away from the lower fixed seat.

8. The automatic tube end forming and testing equipment according to claim 7, characterized in that: The detection system also includes a visual detection unit, which includes a light source, a detection camera, and a positioning tool. The positioning tool is fixedly connected to the detection table, and detection cameras are provided on both sides of the positioning tool, and a light source is provided on the top.

9. The automatic tube end forming and testing equipment according to claim 8, characterized in that: A material discharge system is provided downstream of the detection system, and the material discharge system includes a material separation robot, an unqualified material discharge mechanism, and a qualified material discharge mechanism. The material separation robot can drive the workpiece to flow into the unqualified material discharge mechanism or the qualified material discharge mechanism.

10. A forming and testing method for an automated pipe end forming and testing device according to claim 9, characterized in that: The steps include: S1. Load the workpiece or the equipment to the feeding station of the feeding system, drive the workpiece to its output end through the conveyor line, and after the detection switch detects that the workpiece is in place, the workpiece is moved to the oiling station of the oiling system through the handling mechanism; S2, the handling mechanism moves the workpiece to the oiling positioning seat, oils the inside and outside of the workpiece, and the workpiece enters the forming station after the oiling is completed; S3, the transport mechanism moves the oiled workpiece to the molding station in the molding system, and flows through the molding station 1, molding station 2, and shaping station respectively, gradually pressing the product shape and shaping it to the set size; S4, the formed workpiece flows into the degreasing loading and unloading station of the cleaning system, and the product is cleaned in the degreasing tank of the degreasing loading and unloading station and the rinsing loading and unloading station in turn, and then put into the air-drying loading and unloading station by the loading and unloading transfer robot; S5. The air-dried workpiece flows into the airtight unit, visual inspection unit and marking unit of the inspection system. Through crimping, ventilation and leak detection analysis by professional equipment, it is determined whether the workpiece is qualified and marks are made on the surface of qualified products. S6. Products that fail to meet the standards detected by the visual inspection unit and the airtight unit flow into the unqualified unloading mechanism, and qualified products flow into the qualified unloading mechanism.

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