Aluminum alloy pipe straightness detection device

Abstract

The present invention discloses a straightness detection device for aluminum alloy pipes, and relates to the technical field of aluminum alloy pipe size detection. The straightness detection device for aluminum alloy pipes comprises a bracket, the top outer wall of the bracket is fixedly connected with an operating panel, the top outer wall of the operating panel is provided with a moving groove, the moving groove is symmetrically arranged on the top of the operating panel, the inner wall of the moving groove is rotatably connected with a screw rod 1, the inner wall of each moving groove is slidably connected with two moving blocks 1, one end of the screw rod 1 passes through the moving block 1, the outer wall of the screw rod 1 is threadedly connected with the inner wall of the moving block 1, the top outer wall of the moving block 1 is fixedly connected with a bottom plate, the top outer wall of the bottom plate is fixedly connected with a base, and a steel pipe is placed on the top of the base. The present invention can automatically adjust the position of the base according to the length of the steel pipe, and through the movement of the moving block 1 in the moving groove, the device can be applied to steel pipes of different lengths, thereby improving the versatility and flexibility of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy pipe size detection, and in particular to an aluminum alloy pipe straightness detection device. Background Art

[0002] Aluminum alloy pipes have been widely used in automotive heat exchange systems, household air conditioning systems and other fields due to their low density, good corrosion resistance and good processing performance. Research results show that under the same conditions, aluminum alloy pipes with thinner walls have higher heat transfer efficiency than thicker aluminum alloy pipes. This is because the thinner wall thickness increases the heat flux, reduces the thermal resistance, and improves the heat transfer efficiency accordingly. Therefore, in order to improve the heat transfer effect of aluminum alloy pipes and reduce the amount of aluminum alloy pipes, the wall thickness of aluminum alloy pipes is getting thinner and thinner. At present, the length of aluminum alloy pipes used in automotive heat exchange systems is generally 500-650mm, and the thinnest wall thickness can be as thin as 0.20mm. In order to meet the needs of subsequent processing, higher requirements are placed on the straightness of aluminum alloy pipes, and generally the straightness deviation of each pipe is required to be less than 0.2mm. The strength of aluminum alloy thin-walled pipes is low. During the measurement process, it is very easy to deform when clamping the pipe, which affects the measurement results and product quality.

[0003] After searching, the Chinese patent with publication number CN203824500U discloses a straightness detection device for a round tube or round bar, including a detection platform inclined with respect to a horizontal plane, a rigid crossbeam fixed on the detection platform through fixed brackets at both ends, a micrometer fixed on the bracket through a pressure block and bolts, and an equal height gap is formed between the crossbeam and the surface of the measuring platform. The fixed bracket has a strip hole, the crossbeam has a screw hole, and the crossbeam is fixed to the bracket by a hand screw bolt passing through the strip hole on the fixed bracket.

[0004] During measurement in the above patent, the distance between the two fixed brackets is fixed, which means that the device is only applicable to round tubes or round rods of a specific length. For measuring objects of different lengths, the entire set of equipment needs to be replaced, which increases the cost and complexity of the detection and is difficult to meet the needs of rapid and batch detection in industrial production. Summary of the invention

[0005] The purpose of the present invention is to provide an aluminum alloy pipe straightness detection device, which solves the technical problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an aluminum alloy pipe straightness detection device comprises a bracket, the top outer wall of the bracket is fixedly connected with an operation plate, the top outer wall of the operation plate is provided with a moving groove, the moving groove is symmetrically arranged on the top of the operation plate, the inner wall of the moving groove is rotatably connected with a screw rod 1, the inner wall of each moving groove is slidably connected with two moving blocks 1, one end of the screw rod 1 passes through the moving block 1, the outer wall of the screw rod 1 is threadedly connected with the inner wall of the moving block 1, and the contacting threads of the two moving blocks 1 on the inner wall of each moving groove are in opposite directions, the top outer wall of the moving block 1 is fixedly connected with a bottom plate, the top outer wall of the bottom plate is fixedly connected with a base, a motor 1 is fixedly connected with an outer wall of one side of the base, the output shaft of the motor 1 is fixedly connected with one end of one of the screw rods 1, one end of the two screw rods 1 are fixedly connected with a pulley, the outer side of the pulley is sleeved with a belt, the pulleys are connected through belt transmission, and a steel pipe is placed on the top of the base;

[0007] The base includes a movable seat and a fixed seat, the inner wall of the fixed seat is slidably connected to the outer wall of the movable seat, and the outer walls on both sides of the fixed seat are fixedly connected with height adjustment devices;

[0008] The height adjustment device includes a mounting frame, the inner wall of the mounting frame is rotatably connected to a screw rod 2, the top outer wall of the mounting frame is fixedly connected to a motor 2, the output shaft of the motor 2 is fixedly connected to one end of the screw rod 2, the inner wall of the mounting frame is slidably connected to a moving block 2, the outer wall of the screw rod 2 is threadedly connected to the inner wall of the moving block 2, the outer wall of the moving block 2 is fixedly connected to a cross bar, the cross bar has a rectangular cross section, the outer walls of the two cross bars are abutted, and the two cross bars form a cylinder.

[0009] Preferably, the base is in an inclined shape with the left side lower and the right side higher or the left side higher and the right side lower.

[0010] Preferably, movable seats are provided on both sides of the fixed seat, the movable seats are sleeved on the outside of the fixed seat, and the bottom outer wall of the fixed seat is fixedly connected to the top outer wall of the operating panel through a fixing rod.

[0011] Preferably, an infrared distance measuring device is provided on one side of the mounting frame, and the infrared distance measuring device includes a transmitter and a receiver, the transmitter is provided on the moving block 2, and the receiver is provided on the mounting frame.

[0012] Preferably, a limiting device is provided in the fixed seat, the limiting device includes a slide groove 1, slide grooves 1 are provided on both sides of the inner wall of the fixed seat, slide grooves 2 are provided on both sides of the slide groove 1, the inner wall of the slide groove 1 is slidably connected with a slider, the top outer wall of the slider is fixedly connected with a limiting plate, the outer wall of the limiting plate abuts against the outer wall of the steel pipe, the outer walls of both sides of the slider are fixedly connected with a rotating shaft, the other end of the rotating shaft is rotatably connected with a pulley, the outer wall of the pulley is slidably connected to the inner wall of the slide groove 2, a spring is fixedly connected to the outer wall of one side of the slider, and the other end of the spring is fixedly connected to the inner wall of the slide groove 1.

[0013] Preferably, the slide groove is arranged obliquely, and the depth of the slide groove gradually becomes deeper as it approaches the cross bar.

[0014] Preferably, a circular groove is formed on the outer wall of the limiting plate on one side close to the steel pipe.

[0015] Preferably, a moving wheel is fixedly connected to the bottom outer wall of the bracket, a controller is fixedly connected to the outer wall of one side of the bracket, and a display screen is installed on the outer wall of the controller.

[0016] Compared with the related art, the aluminum alloy pipe straightness detection device provided by the present invention has the following beneficial effects:

[0017] 1. The present invention provides an aluminum alloy pipe straightness detection device, which can automatically adjust the position of the base according to the length of the steel pipe. By moving the moving block in the moving groove, it can be used to detect the straightness of the lengthened pipe or bar, so that the device can be applicable to steel pipes of different lengths, thereby improving the versatility and flexibility of the equipment.

[0018] 2. The present invention provides an aluminum alloy pipe straightness detection device, which uses an infrared ranging device for non-contact measurement, can accurately measure the position information of the steel pipe surface, and calculate the straightness deviation of the steel pipe through data processing. The detection result is accurate and reliable.

[0019] 3. The present invention provides an aluminum alloy pipe straightness detection device with strong adjustability. The height adjustment device allows the user to flexibly adjust the height of the cross bar according to the diameter and straightness requirements of the steel pipe, thereby ensuring the accuracy and adaptability of the detection process.

[0020] 4. The present invention provides an aluminum alloy pipe straightness detection device. The limiting device is stable and reliable. The limiting device in the fixed seat realizes stable limiting of the steel pipe through a combination of slide groove one, slide groove two, slider, limiting plate and spring, prevents the steel pipe from shifting during the detection process, and improves the stability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a side view structural schematic diagram of the present invention;

[0023] Figure 3 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 4 It is a schematic diagram of the structure of the base of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the height adjustment device of the present invention;

[0026] Figure 6 It is a partial structural schematic diagram of the base of the present invention;

[0027] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0028] Figure 8 It is a structural schematic diagram of the limiting device of the present invention.

[0029] In the figure: 1. bracket; 2. moving wheel; 3. controller; 4. display screen; 5. operation panel; 6. moving slot; 7. screw rod 1; 8. moving block 1; 9. bottom plate; 10. base; 101. movable seat; 102. fixed seat; 11. motor 1; 12. pulley; 13. belt; 14. steel pipe; 15. height adjustment device; 151. mounting frame; 152. screw rod 2; 153. moving block 2; 154. motor 2; 16. cross bar; 17. infrared ranging device; 171. transmitter; 172. receiver; 18. slide slot 1; 19. slide slot 2; 20. slider; 21. limit plate; 22. pulley; 23. spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0031] See also Figure 1-Figure 5The present invention provides a technical solution: an aluminum alloy pipe straightness detection device, comprising a bracket 1, an operating panel 5 is fixedly connected to the top outer wall of the bracket 1, a moving groove 6 is opened on the top outer wall of the operating panel 5, and the moving groove 6 is symmetrically arranged on the top of the operating panel 5. The inner wall of the moving groove 6 is rotatably connected to a screw rod 7, and the inner wall of each moving groove 6 is slidably connected to two moving blocks 8, one end of the screw rod 7 passes through the moving block 8, and the outer wall of the screw rod 7 is threadedly connected to the inner wall of the moving block 8, and each moving groove 6 has a screw rod 7. The threads of the two moving blocks 8 contacting the wall are in opposite directions, the top outer wall of the moving block 8 is fixedly connected to the bottom plate 9, the top outer wall of the bottom plate 9 is fixedly connected to the base 10, the outer wall of one side of the base 10 is fixedly connected to a motor 11, the output shaft of the motor 11 is fixedly connected to one end of one of the screw rods 7, one end of the two screw rods 7 are fixedly connected to a pulley 12, the outer side of the pulley 12 is sleeved with a belt 13, the pulley 12 is connected through the belt 13, and a steel pipe 14 is placed on the top of the base 10;

[0032] In this embodiment, the aluminum alloy thin-walled tube is placed on the left end of the upper plane of the base 10 and rolled to the right under the action of gravity. If the aluminum tube can pass through the cross bar 16 smoothly, it means that the straightness of the aluminum alloy thin-walled tube can meet the straightness deviation requirement. If the aluminum alloy tube cannot pass through the cross bar 16, it means that the straightness of the aluminum alloy thin-walled tube exceeds the deviation requirement.

[0033] According to the length of the steel pipe, the motor 11 is started to drive one of the screw rods 7 to rotate, and the two screw rods 7 are rotated synchronously through the transmission effect of the pulley 12 and the belt 13. The rotation of the screw rod 7 drives the two moving blocks 8 in each moving groove 6 to move horizontally toward the middle or both sides at the same time, and the moving block 8 indirectly drives the base 10 to move together. When the moving block 8 drives the two bases 10 to move toward the sides, it is suitable for longer steel pipes. When the moving block 8 indirectly drives the two bases 10 to move toward the middle, it is suitable for shorter steel pipes.

[0034] The base 10 includes a movable base 101 and a fixed base 102. The inner wall of the fixed base 102 is slidably connected to the outer wall of the movable base 101. The outer walls on both sides of the fixed base 102 are fixedly connected with height adjustment devices 15.

[0035] The height adjustment device 15 includes a mounting frame 151, the inner wall of the mounting frame 151 is rotatably connected to a screw rod 152, the top outer wall of the mounting frame 151 is fixedly connected to a motor 154, the output shaft of the motor 154 is fixedly connected to one end of the screw rod 152, the inner wall of the mounting frame 151 is slidably connected to a moving block 153, the outer wall of the screw rod 152 is threadedly connected to the inner wall of the moving block 153, the outer wall of the moving block 153 is fixedly connected to a cross bar 16, the cross bar 16 has a rectangular cross section, the outer walls of the two cross bars 16 are abutted, and the two cross bars 16 form a cylinder.

[0036] In this embodiment, when the two bases 10 move to the sides, the mounting frame 151 connected thereto is driven to move accordingly, and the second moving block 153 drives the crossbar 16 to move to the sides, and the two crossbars 16 are always in contact with each other;

[0037] According to the outer diameter and straightness requirements of the aluminum tube, the height of the cross bar 16 is adjusted to control the vertical distance between the cross bar 16 and the upper plane of the base 10. The height of the cross bar 16 is the outer diameter of the aluminum tube + the straightness deviation. According to the diameter of the steel tube, the starting motor drives the screw 2 152 to rotate through the motor 2 154, driving the moving block 2 153 to move up and down in the mounting frame 151, and the cross bar 16 connected to the moving block 2 153 adjusts its height accordingly.

[0038] The base 10 is in an inclined shape with the left side lower and the right side higher or the left side higher and the right side lower.

[0039] In this embodiment, the upper surface of the base 10 is polished and is an inclined plane, and generally the aluminum alloy thin-walled pipe rolls freely on it.

[0040] The movable seats 101 are arranged on both sides of the fixed seat 102 . The movable seats 101 are sleeved on the outer side of the fixed seat 102 . The bottom outer wall of the fixed seat 102 is fixedly connected to the top outer wall of the operating panel 5 through a fixing rod.

[0041] An infrared distance measuring device 17 is disposed on one side of the mounting frame 151 . The infrared distance measuring device 17 includes a transmitter 171 and a receiver 172 . The transmitter 171 is disposed on the second moving block 153 , and the receiver 172 is disposed on the mounting frame 151 .

[0042] In this embodiment, as the base 10 moves, the transmitter 171 of the infrared ranging device 17 installed thereon emits infrared light to the surface of the steel pipe, and the receiver 172 receives the reflected light. By measuring the reflection path and time difference of the light, the distance between the cross bar 16 and the movable seat 101 is calculated.

[0043] The bottom outer wall of the bracket 1 is fixedly connected with a moving wheel 2 , the outer wall of one side of the bracket 1 is fixedly connected with a controller 3 , and the outer wall of the controller 3 is installed with a display screen 4 .

[0044] In this embodiment, the controller 3 is electrically connected to the motor and other structures to receive and send signals and display data through the display screen 4. Example

[0045] See also Figure 1-Figure 8As shown, on the basis of embodiment 1, the present invention provides a technical solution: a limiting device is arranged in the fixed seat 102, the limiting device includes a slide groove 18, slide grooves 18 are provided on both sides of the inner wall of the fixed seat 102, slide grooves 19 are provided on both sides of the slide groove 18, a slider 20 is slidably connected to the inner wall of the slide groove 18, a limiting plate 21 is fixedly connected to the top outer wall of the slider 20, the outer wall of the limiting plate 21 abuts against the outer wall of the steel pipe 14, both sides of the outer walls of the slider 20 are fixedly connected to a rotating shaft, the other end of the rotating shaft is rotatably connected to a pulley 22, the outer wall of the pulley 22 is slidably connected to the inner wall of the slide groove 19, a spring 23 is fixedly connected to the outer wall of one side of the slider 20, and the other end of the spring 23 is fixedly connected to the inner wall of the slide groove 18.

[0046] In this embodiment, the steel pipe 14 is placed at the limiting device. Under the action of gravity, the steel pipe 14 and the limiting device move downward together. The limiting plate 21 slides in the first slide groove 18 through the slider 20, and the pulley 22 rolls in the second slide groove 19 to reduce friction and facilitate sliding. The limiting plate 21 limits the movement of the steel pipe 14 to prevent it from deflecting. When the slider 20 moves downward, it squeezes the spring 23. When the steel pipe 14 passes the cross bar 16, the spring 23 rebounds and drives the limiting device to return to its original position.

[0047] The slide groove 18 is inclined, and the depth of the slide groove 18 gradually increases as it approaches the cross bar 16 .

[0048] In this embodiment, the depth of the slide groove 18 gradually becomes deeper near the cross bar 16. When the slider 20 moves to the cross bar 16, the limit plate 21 is hidden in the fixing seat 102 to prevent the limit plate 21 from blocking the steel pipe 14 and affecting the detection.

[0049] A circular groove is formed on the outer wall of the limiting plate 21 close to the steel pipe 14 .

[0050] Working principle: Place the aluminum alloy steel pipe 14 to be tested on the base 10, start the motor 11 according to the length of the steel pipe, drive one of the screw rods 7 to rotate, and through the transmission effect of the pulley 12 and the belt 13, the two screw rods 7 rotate synchronously, and the rotation of the screw rod 7 drives the two moving blocks 8 in each moving groove 6 to move horizontally toward the middle or both sides at the same time, and the moving block 8 indirectly drives the base 10 to move together. When the moving block 8 drives the two bases 10 to move to both sides, it is suitable for longer steel pipes. When the moving block 8 indirectly drives the two bases 10 to move toward the middle, it is suitable for shorter steel pipes.

[0051] When the two bases 10 move to the sides, the mounting frame 151 connected thereto moves accordingly, and the second moving block 153 drives the crossbar 16 to move to the sides, and the two crossbars 16 are always in close contact;

[0052] According to the outer diameter and straightness requirements of the aluminum tube, the height of the crossbar 16 is adjusted to control the vertical distance between the crossbar 16 and the upper plane of the base 10. The height of the crossbar 16 is the outer diameter of the aluminum tube + the straightness deviation. According to the diameter of the steel tube, the motor is started to drive the second screw rod 152 to rotate through the second motor 154, driving the second moving block 153 to move up and down in the mounting frame 151, and the height of the crossbar 16 connected to the second moving block 153 is adjusted accordingly.

[0053] As the base 10 moves, the transmitter 171 of the infrared distance measuring device 17 installed thereon emits infrared light to the surface of the steel pipe, and the receiver 172 receives the reflected light, and calculates the distance between the crossbar 16 and the movable seat 101 by measuring the reflection path and time difference of the light;

[0054] Place the aluminum alloy thin-walled tube on the left end of the upper plane of the base 10 and roll it to the right under the action of gravity. If the aluminum alloy tube can pass through the cross bar 16 smoothly, it means that the straightness of the aluminum alloy thin-walled tube can meet the straightness deviation requirement. If the aluminum alloy tube cannot pass through the cross bar 16, it means that the straightness of the aluminum alloy thin-walled tube exceeds the deviation requirement.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A straightness detection device for an aluminum alloy pipe, comprising a bracket (1), characterized in that: The top outer wall of the bracket (1) is fixedly connected to an operating plate (5), and the top outer wall of the operating plate (5) is provided with a moving groove (6), and the moving groove (6) is symmetrically arranged on the top of the operating plate (5). The inner wall of the moving groove (6) is rotatably connected to a screw rod (7), and the inner wall of each moving groove (6) is slidably connected to two moving blocks (8), one end of the screw rod (7) passes through the moving block (8), and the outer wall of the screw rod (7) is threadedly connected to the inner wall of the moving block (8), and the threads of the two moving blocks (8) on the inner wall of each moving groove (6) are in opposite directions. The top outer wall of the moving block 1 (8) is fixedly connected to a bottom plate (9), the top outer wall of the bottom plate (9) is fixedly connected to a base (10), a side outer wall of the base (10) is fixedly connected to a motor 1 (11), an output shaft of the motor 1 (11) is fixedly connected to one end of one of the screw rods 1 (7), one end of the two screw rods 1 (7) are fixedly connected to a pulley (12), the outer side of the pulley (12) is sleeved with a belt (13), the pulley (12) is connected through the belt (13), and a steel pipe (14) is placed on the top of the base (10); The base (10) comprises a movable seat (101) and a fixed seat (102), the inner wall of the fixed seat (102) being slidably connected to the outer wall of the movable seat (101), and the outer walls on both sides of the fixed seat (102) are fixedly connected to height adjustment devices (15); The height adjustment device (15) comprises a mounting frame (151), the inner wall of the mounting frame (151) is rotatably connected to a second screw rod (152), the top outer wall of the mounting frame (151) is fixedly connected to a second motor (154), the output shaft of the second motor (154) is fixedly connected to one end of the second screw rod (152), the inner wall of the mounting frame (151) is slidably connected to a second moving block (153), the outer wall of the second screw rod (152) is threadedly connected to the inner wall of the second moving block (153), the outer wall of the second moving block (153) is fixedly connected to a cross bar (16), the cross bar (16) has a rectangular cross section, the outer walls of the two cross bars (16) are abutted, and the two cross bars (16) form a cylinder; An infrared distance measuring device (17) is arranged on one side of the mounting frame (151), and the infrared distance measuring device (17) comprises a transmitter (171) and a receiver (172), wherein the transmitter (171) is arranged on the second moving block (153), and the receiver (172) is arranged on the mounting frame (151); A limiting device is provided in the fixed seat (102), and the limiting device comprises a first slide groove (18). Slide grooves (18) are provided on both sides of the inner wall of the fixed seat (102), and second slide grooves (19) are provided on both sides of the first slide groove (18). The inner wall of the first slide groove (18) is slidably connected with a slider (20), and the top outer wall of the slider (20) is fixedly connected with a limiting plate (21), and the outer wall of the limiting plate (21) abuts against the outer wall of the steel pipe (14). The outer walls of both sides of the slider (20) are fixedly connected with a rotating shaft, and the other end of the rotating shaft is rotatably connected with a pulley (22), and the outer wall of the pulley (22) is slidably connected with the inner wall of the second slide groove (19). A spring (23) is fixedly connected to the outer wall of one side of the slider (20), and the other end of the spring (23) is fixedly connected to the inner wall of the first slide groove (18).

2. The aluminum alloy pipe straightness detection device according to claim 1, characterized in that: The base (10) is in an inclined shape with the left side lower and the right side higher or the left side higher and the right side lower.

3. The aluminum alloy pipe straightness detection device according to claim 1, characterized in that: A movable seat (101) is provided on both sides of the fixed seat (102); the movable seat (101) is sleeved on the outside of the fixed seat (102); and the bottom outer wall of the fixed seat (102) is fixedly connected to the top outer wall of the operating panel (5) via a fixing rod.

4. The aluminum alloy pipe straightness detection device according to claim 1, characterized in that: The slide groove one (18) is arranged obliquely, and the depth of the slide groove one (18) gradually becomes deeper as it approaches the cross bar (16).

5. The aluminum alloy pipe straightness detection device according to claim 1, characterized in that: A circular groove is formed on the outer wall of one side of the limiting plate (21) close to the steel pipe (14).

6. The aluminum alloy pipe straightness detection device according to claim 1, characterized in that: A moving wheel (2) is fixedly connected to the bottom outer wall of the bracket (1), a controller (3) is fixedly connected to the outer wall of one side of the bracket (1), and a display screen (4) is installed on the outer wall of the controller (3).

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