A pipe welding seam position detection device

Abstract

The present invention discloses a device for detecting the position of weld seams on pipe fittings, comprising a frame provided with a pipe placement trough for placing pipe fittings, a pipe clamping device for clamping the pipe fittings, a pipe clamping power device for driving the pipe clamping device to switch between a clamped and a loosened state, a pipe jacking device for driving the pipe fittings in the pipe placement trough to move to a working area of the pipe clamping device, a rotation power device for driving the pipe clamping device and the pipe fittings clamped by the pipe clamping device to rotate together, and a weld seam identification device for identifying the weld seams of the pipe fittings in the pipe placement trough. The present invention can automatically detect the position of weld seams on pipe fittings such as copper pipes, and in subsequent processing, the weld seams of the pipe fittings can be avoided as needed. The entire detection process is performed automatically, saving time and effort.

Description

Technical Field

[0001] The present invention relates to the technical field of copper pipe processing, and in particular to a pipe welding seam position detection device. Background Art

[0002] Copper tubes and fins are the two main materials used in tube-fin heat exchangers. Some copper tubes are made by welding copper sheets together. These axially extending butt welds are weak points on the tubes. Many subsequent processing steps, such as bending and drilling, require accurate positioning of the welds before processing and avoidance of these welds to prevent cracking.

[0003] In traditional production processes, manual inspection of weld positions is generally used. The specific inspection method is manual visual inspection or observation with a magnifying glass, which requires a lot of manpower, has a low degree of automation, and high labor costs. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a detection device capable of automatically detecting the position of a pipe weld.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A pipe fitting weld position detection device includes a frame, the frame being provided with a pipe placement groove capable of placing pipe fittings, a pipe clamping device capable of clamping the pipe fittings, a pipe clamping power device capable of driving the pipe clamping device to switch between a clamping state and a loose state, a pipe jacking device capable of driving the pipe fittings in the pipe placement groove to move to a working area of the pipe clamping device, a rotating power device capable of driving the pipe clamping device and the pipe fitting clamped by the pipe clamping device to rotate together, and a weld identification device capable of identifying the weld of the pipe fitting in the pipe placement groove.

[0007] As a further optimization scheme of the above scheme, the tube clamping device includes a cylindrical chuck for pipe fittings to pass through, and at least two open slits are arranged at one end of the cylindrical chuck, and an elastic clip is formed between adjacent open slits. The outer side of the elastic clip is provided with a pushing inclined surface, and the tube clamping power device includes a ring mounted on the cylindrical chuck, and a tube clamping driver capable of driving the ring to move axially relative to the cylindrical chuck. When the ring moves toward the free end of the elastic clip, it presses the pushing inclined surface to make the elastic clip bend inward, and when the ring moves toward the other end of the elastic clip, the elastic clip is elastically restored.

[0008] As a further optimization of the above solution, a pipe clamping bracket is provided on the frame, and the cylindrical clamping head is rotatably mounted on the pipe clamping bracket.

[0009] As a further optimization of the above scheme, a swing frame is hinged on the tube clamp bracket, and the tube clamp driver is a cylinder hinged on the tube clamp bracket. The output shaft of the cylinder is hinged to one end of the swing frame to drive the swing frame to swing. A circumferential groove is provided on the outer side wall of the ring, and a transmission member embedded in the circumferential groove and movable along the circumferential groove is provided on the other end of the swing frame, so that the ring can be driven to move axially when the swing frame swings.

[0010] As a further optimization of the above solution, the transmission member is a roller hinged on the swing frame, and the outer side wall of the roller abuts against the inner side wall of the circumferential groove.

[0011] As a further optimization scheme of the above scheme, the cylindrical chuck is located outside the notch of one end of the tube placing groove and the inner hole of the cylindrical chuck is opposite to the notch of the tube placing groove. The pipe jacking device includes a pushing piece located in the tube placing groove and a pipe jacking driver capable of driving the pushing piece to move along the tube placing groove. When the pushing piece moves toward the cylindrical chuck, it pushes the pipe in the tube placing groove so that one end of the pipe passes through the inner hole of the cylindrical chuck.

[0012] As a further optimization of the above solution, an axial air groove is provided on the inner side wall of the elastic clip.

[0013] As a further optimization scheme of the above scheme, the rotary power device includes a first gear, a second gear hinged on the pipe clamp bracket, a synchronous toothed belt connecting the first gear and the second gear, and a motor installed on the pipe clamp bracket and capable of driving the second gear to rotate, the first gear being fixed on the cylindrical chuck and the two being coaxial.

[0014] As a further optimization of the above solution, the tube placement groove is a V-shaped groove.

[0015] As a further optimization of the above solution, a notch is provided on the pipe placement groove, and the weld identification device includes a photographing device capable of identifying the weld of the pipe placement component through the notch.

[0016] The beneficial effects of the present invention are as follows: the present invention can automatically detect the position of the welds on copper pipes and other pipe fittings. In the subsequent processing process, the welds of the pipe fittings can be avoided as needed. The entire detection process is carried out automatically, which saves manpower, helps reduce labor costs, and helps improve work efficiency and detection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 This is a left side view of the present invention when the frame and the pipe jacking device are omitted;

[0019] Figure 3 This is an exploded view of the connection structure of the swing frame, cylindrical chuck and collar;

[0020] Figure 4 It is a cross-sectional view of the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] It should be noted that all directional indications in the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship, movement, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0023] Reference Figures 1 to 4 The present invention proposes a pipe weld position detection device, comprising a frame 1, on which is provided a pipe placement groove 11 capable of placing a pipe 2, a pipe clamping device capable of clamping the pipe 2, a pipe clamping power device capable of driving the pipe clamping device to switch between a clamping state and a loose state, a pipe jacking device capable of driving the pipe 2 in the pipe placement groove 11 to move to a working area of the pipe clamping device, a rotating power device capable of driving the pipe clamping device and the pipe 2 clamped by the pipe clamping device to rotate together, and a weld identification device 7 capable of identifying the weld of the pipe 2 in the pipe placement groove 11.

[0024] The method of using the present invention to detect the position of the weld of a pipe fitting 2 is as follows: first, the feeding device transports a pipe fitting 2 into the pipe placement groove 11; then, the pipe jacking device pushes the pipe fitting 2 into the working area of the pipe clamping device; then the pipe clamping power device works to drive the pipe clamping device to clamp the pipe fitting 2; then the rotary power device is started to drive the pipe fitting 2 and the pipe clamping device to rotate together. During the rotation of the pipe fitting 2, the weld identification device 7 can connect to the detection pipe fitting 2 for one circle to find the position of the weld. After the position of the weld is found, the pipe clamping power device works to drive the pipe clamping device to release the pipe fitting 2, and then the manipulator or other material-retrieving device can transport the pipe fitting 2 with the weld position found to the next workstation. In the subsequent processing process, the weld of the pipe fitting 2 can be avoided as needed. The entire detection process is carried out automatically, which saves manpower, helps to reduce labor costs, and helps to improve work efficiency and detection reliability.

[0025] In a preferred embodiment of the present invention, the tube clamping device includes a cylindrical chuck 3 through which a tube 2 can pass. A tube clamping bracket 12 is provided on a frame 1, and the cylindrical chuck 3 is rotatably mounted on the tube clamping bracket 12. At least two open slits 31 are spaced apart at one end of the cylindrical chuck 3, with elastic clips 32 formed between adjacent open slits 31. The outer portions of the elastic clips 32 are provided with inclined thrust surfaces 33. The tube clamping power device includes a collar 41 mounted on the cylindrical chuck 3 and a tube clamping driver 42 capable of driving the collar 41 to move axially relative to the cylindrical chuck 3. A swing frame 43 is hingedly connected to the tube clamping bracket 12. The tube clamping driver 42 is a cylinder hingedly connected to the tube clamping bracket 12. The cylinder output shaft is hingedly connected to one end of the swing frame 43. A circumferential groove 411 is provided on the outer wall of the collar 41, and a transmission member is provided at the other end of the swing frame 43, which is embedded in the circumferential groove 411 and can move along the circumferential groove 411. In this solution, when the output shaft of the cylinder performs telescopic movement, it can drive the swing frame 43 to swing back and forth, thereby driving the ring 41 to move axially. When the ring 41 moves toward the free end of the elastic clip 32, it presses the pushing inclined surface 33 to make the elastic clip 32 bend inward and clamp the pipe 2 passing through the cylindrical clamp 3. When the ring 41 moves toward the other end of the elastic clip 32, the elastic clip 32 elastically recovers, and at this time the elastic clip 32 releases the pipe 2.

[0026] As a further improvement to the above solution, the transmission member is a roller 44 hinged on the swing frame 43, and the outer wall of the roller 44 abuts against the inner wall of the circumferential groove 411. This design can reduce the friction between the roller 44 and the collar 41, and improve the movement smoothness of the moving parts.

[0027] As a further improvement of the above solution, an axial air groove 322 is provided on the inner wall of the elastic clip 32. When the elastic clip 32 clamps the pipe 2, the air groove 322 can discharge the air between the two. In addition, the design of the air groove 322 can also play an anti-slip role.

[0028] In certain embodiments of the present invention, the above-mentioned tube clamping power device may also adopt other structural forms. For example, a collar 41 is also used to be sleeved on the cylindrical chuck 3, and a cylinder is used as a power source. The output shaft of the cylinder is directly connected to the collar 41, driving the collar 41 to move axially to switch the cylindrical chuck 3 between the clamping and loosening states.

[0029] In a preferred embodiment of the present invention, the cylindrical chuck 3 is located outside the notch at one end of the pipe receiving groove 11, and the inner hole of the cylindrical chuck 3 faces the notch of the pipe receiving groove 11. The pipe jacking device includes a pusher 51 located in the pipe receiving groove 11 and a pipe jacking driver 52 capable of driving the pusher 51 to move along the pipe receiving groove 11. When the pusher 51 moves toward the cylindrical chuck 3, it pushes the pipe 2 in the pipe receiving groove 11 so that one end of the pipe 2 passes through the inner hole of the cylindrical chuck 3. The pipe jacking driver 52 is preferably a motor connected to the pusher 51 via a ball screw nut pair.

[0030] In a preferred embodiment of the present invention, the rotary power device includes a first gear 61, a second gear 62 hinged to the pipe clamping bracket 12, a timing belt 63 connecting the first and second gears 61 and 62, and a motor 64 mounted on the pipe clamping bracket 12 to drive the second gear 62. The first gear 61 is coaxially fixed to the cylindrical chuck 3. Rotation of the motor 64 drives the second gear 62, which in turn drives the first gear 61 and the pipe clamping device via the timing belt 63.

[0031] In certain embodiments of the present invention, the above-mentioned rotary power device may also adopt other structural forms, for example, a gear set or a sprocket chain mechanism may be used instead of the above-mentioned synchronous toothed belt 63 mechanism.

[0032] In a preferred embodiment of the present invention, the pipe groove 11 is a V-shaped groove. A notch 111 is provided on the pipe groove 11. The weld seam identification device 7 includes a camera capable of identifying the weld seam of the pipe 2 in the pipe groove 11 through the notch 111, thereby visually identifying the position of the weld seam.

[0033] In certain embodiments of the present invention, ultrasonic waves emitted by devices such as ultrasonic probes may also be used to detect the weld position.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A pipe weld position detection device, characterized in that: The invention comprises a frame (1), wherein the frame (1) is provided with a pipe placement groove (11) capable of placing a pipe fitting (2), a pipe clamping device capable of clamping the pipe fitting (2), a pipe clamping power device capable of driving the pipe clamping device to switch between a clamping state and a loosening state, a pipe jacking device capable of driving the pipe fitting (2) in the pipe placement groove (11) to move to a working area of the pipe clamping device, a rotating power device capable of driving the pipe clamping device and the pipe fitting (2) clamped by the pipe clamping device to rotate together, and a weld seam identification device (7) capable of identifying a weld seam of the pipe fitting (2) in the pipe placement groove (11), wherein the pipe placement groove (11) is a V-shaped groove; The pipe clamping device comprises a cylindrical clamp (3) through which the pipe (2) can pass, at least two opening slits (31) are arranged at intervals at one end of the cylindrical clamp (3), an elastic clip (32) is formed between adjacent opening slits (31), and an outer portion of the elastic clip (32) is provided with a push-up inclined surface (33), the pipe clamping power device comprises a collar (41) sleeved on the cylindrical clamp (3), and a pipe clamping driver (42) capable of driving the collar (41) to move axially relative to the cylindrical clamp (3), the collar (41) presses the push-up inclined surface (33) when moving toward the free end of the elastic clip (32) to make the elastic clip (32) bend inward, and the collar (41) moves toward the other end of the elastic clip (32) to make the elastic clip (32) elastically recover; A pipe clamping bracket (12) is provided on the frame (1), and the cylindrical clamping head (3) is rotatably mounted on the pipe clamping bracket (12); A swing frame (43) is hingedly connected to the pipe clamping bracket (12), the pipe clamping driver (42) is a cylinder hingedly connected to the pipe clamping bracket (12), the output shaft of the cylinder is hingedly connected to one end of the swing frame (43) to drive the swing frame (43) to swing, a circumferential groove (411) is provided on the outer side wall of the collar (41), and a transmission member embedded in the circumferential groove (411) and movable along the circumferential groove (411) is provided at the other end of the swing frame (43), so that the collar (41) can be driven to move axially when the swing frame (43) swings; The cylindrical chuck (3) is located outside the notch of one end of the tube groove (11) and the inner hole of the cylindrical chuck (3) is opposite to the notch of the tube groove (11). The tube jacking device includes a pushing member (51) located in the tube groove (11) and a tube jacking driver (52) capable of driving the pushing member (51) to move along the tube groove (11). When the pushing member (51) moves toward the cylindrical chuck (3), it pushes the tube (2) in the tube groove (11) to make one end of the tube (2) pass through the inner hole of the cylindrical chuck (3).

2. A pipe weld position detection device according to claim 1, characterized in that: The transmission member is a roller (44) hinged on the swing frame (43), and the outer side wall of the roller (44) abuts against the inner side wall of the circumferential groove (411).

3. The pipe weld position detection device according to claim 1, characterized in that: An axial air groove (322) is provided on the inner side wall of the elastic clip (32).

4. The pipe weld position detection device according to claim 1, characterized in that: The rotary power device comprises a first gear (61), a second gear (62) hinged on the pipe clamping bracket (12), a synchronous toothed belt (63) connecting the first gear (61) and the second gear (62), and a motor (64) mounted on the pipe clamping bracket (12) and capable of driving the second gear (62) to rotate. The first gear (61) is fixed on the cylindrical clamping head (3) and the two are coaxial.

5. The pipe weld position detection device according to claim 4, characterized in that: The pipe placement groove (11) is provided with a notch (111), and the weld identification device (7) comprises a photographing device capable of identifying the weld of the pipe placement component (2) through the notch (111).

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