A copper pipe fitting tin coating device and a copper pipe fitting tin coating method

Abstract

The application discloses a copper pipe fitting tin coating equipment, relates to the field of copper pipe cold pressure tin wire equipment, and solves the problem of prolonged processing time caused by separated processing stations in the existing copper pipe fitting tin coating equipment. The application provides a copper pipe fitting tin coating equipment, which comprises a workbench, a working device, a clamping device and a tin coating device arranged on the workbench. The working device comprises a working mechanism and a first driving mechanism for driving the working mechanism to move left and right. The working mechanism comprises a rotatable working turntable and a plurality of working heads arranged in the circumferential direction of the working turntable. The working heads are used for groove rolling, tin coating and shaping respectively. The tin coating device is used for coating tin wire into a tin containing groove. The clamping device comprises a clamping mechanism for clamping copper pipe fittings and rotating, and a second driving mechanism for driving the clamping mechanism to move forward and backward. The clamping mechanism rotates to cooperate with the working device to complete corresponding processes.

Description

Technical Field

[0001] The present invention relates to the field of copper tube cold-press tin wire equipment, in particular to a copper pipe tin-laying equipment. Background Art

[0002] Existing copper pipe tin-laying equipment, such as the Chinese invention patent application with the application number 202110748576.6 and the patent title of automatic integrated processing machine for tin-laid pipes, usually processes different working procedures at different stations, uses a mechanical arm to transfer the copper pipes between different stations, and finally completes the tin-laying procedure of the copper pipes.

[0003] However, the separation of stations leads to a long time spent in the process of transferring copper pipes between multiple stations, which increases the processing time of copper pipes, and further increases the manufacturing cost of copper pipes. At the same time, the separation of stations leads to a large number of mechanisms on the equipment, which makes the equipment workbench occupy too much floor area, the factory building cannot accommodate more equipment, further increases the manufacturing cost of copper pipes, and also limits the output of copper pipes. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a single-station copper pipe tin-laying equipment to overcome the deficiencies of the prior art, so as to solve at least one of the above problems.

[0005] In order to achieve the above technical objectives, a copper pipe tin-laying equipment proposed by the present invention includes a workbench, and a working device, a clamping device and a tin-coating device arranged thereon. The working device includes a working mechanism and a first driving mechanism that drives the working mechanism to move left and right. The working mechanism includes a rotatable working turntable, and a plurality of working heads arranged on the working turntable in the circumferential direction. The plurality of working heads include a groove rolling head for rolling a tin-accommodating groove on the inner wall of the copper pipe, a tin-flattening head for flattening the tin wire in the tin-accommodating groove, and a shaping head for shaping the flattened tin wire. The tin-coating device cooperates with the clamping device to lay the tin wire into the tin-accommodating groove. The clamping device includes a clamping mechanism that clamps the copper pipe and is rotatable, and a second driving mechanism that drives the clamping mechanism to move back and forth. The working mechanism moves and the working turntable rotates to align one of the working heads with the position of the copper pipe, the clamping mechanism moves to make the working head extend into the copper pipe, and the clamping mechanism rotates to cooperate with the working device to complete the corresponding procedure.

[0006] Preferably, the first driving mechanism includes a first guide rail arranged along the left-right direction, a first base slidably arranged on the first guide rail, and a first motor driving the first base to move left and right. The working mechanism is fixed on the first base, and the first motor is in servo transmission with the working mechanism.

[0007] Preferably, the clamping device further includes a rotating mechanism, the clamping mechanism is fixed on the rotating mechanism, the rotating mechanism drives the clamping mechanism to rotate, the second driving mechanism includes a second guide rail arranged in the front-back right direction, a second base slidably arranged on the second guide rail, and a second motor that drives the second base to move back and forth, the rotating mechanism is fixed on the second base, and the second motor is servo driven by the rotating mechanism.

[0008] Preferably, the rotating mechanism includes a stator, a rotor, and a main shaft that rotates with the rotor. The main shaft is hollow. The clamping drive unit is connected to the rotating mechanism. The clamping drive unit is driven by hydraulic or pneumatic pressure. A pipe for conveying liquid or gas passes through the main shaft and is connected to the clamping drive unit.

[0009] Preferably, the clamping mechanism includes at least two clamping claws and a clamping drive unit for driving the clamping claws to open and close. A first groove is formed on the clamping claws. The at least two clamping claws close together to form a forming groove surrounding the outside of the copper tube. The forming groove cooperates with the grooving head to roll out a tin-receiving groove on the inner wall of the copper tube. The clamping jaw is also provided with an ejection mechanism, which includes an ejection part and an ejection driving mechanism. The ejection part is movably disposed in the clamping jaw, and the ejection driving mechanism drives the ejection part to extend from the inside of the clamping jaw to eject the copper tube during the opening of the clamping jaw.

[0010] Preferably, the workbench is also provided with a conveying device for transporting copper pipe fittings. The conveying device includes a first picking mechanism, a second picking mechanism and a third picking mechanism. The first picking mechanism clamps the copper pipe fittings on the conveyor belt, the second picking mechanism clamps the copper pipe fittings on the first picking mechanism and transports them to the clamping mechanism, and the third picking mechanism clamps the processed copper pipe fittings on the clamping mechanism and stacks them in the corresponding positions.

[0011] Preferably, the picking device further includes a picking drive mechanism, which includes a third guide rail disposed above the worktable, a bracket supporting the third guide rail, and a picking mechanism drive unit mounted on the bracket. The second picking mechanism and the third picking mechanism are installed on the third guide rail at intervals, and the picking mechanism drive unit drives the second picking mechanism and the third picking mechanism to move synchronously.

[0012] Preferably, the working device and the soldering device are respectively disposed on both sides of the clamping device. The first driving mechanism includes a first guide rail arranged in the left-right direction, and the first driving mechanism drives the working device to move on the first guide rail. The soldering device includes a soldering unit and a fourth driving mechanism. The soldering unit is fixed on the fourth driving mechanism, and the fourth driving mechanism is slidably disposed on the first guide rail, and the fourth driving mechanism drives the soldering unit to move on the first guide rail.

[0013] Preferably, the tin-applying device includes a tin-applying mechanism and a tin-feeding mechanism. The tin-applying mechanism includes a tin-applying unit with a tin-winding groove formed on it. The tin-applying unit cooperates with the wire-feeding mechanism to wind tin wire on the tin-winding groove. The tin-applying unit cooperates with the clamping device to lay the tin wire into the tin-receiving groove.

[0014] Preferably, the solder feeding mechanism further includes a solder guiding component, which guides the solder wire to wind around and adhere to the solder winding groove.

[0015] The present invention also proposes a method for tinning copper pipe fittings, including the tinning equipment for copper pipe fittings described in any of the above technical solutions, the specific steps of which are as follows: S100, The working device and the clamping device cooperate to complete the grooving process; S200, The tin-applying device and the clamping device cooperate to complete the tin-applying process; S300, The working device and the clamping device cooperate to complete the tin-flattening process; S400, The working device and the clamping device cooperate to complete the shaping process.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects.

[0017] 1. The present invention provides a copper pipe tinning equipment, which integrates multiple working parts for copper pipe tinning onto a working device, and the working device cooperates with a clamping device to realize the grooving, tinning, and shaping processes of copper pipes. This avoids the drawback of traditional copper pipe tinning equipment where copper pipes need to move between multiple workstations, thereby significantly reducing product processing time and production costs. At the same time, compared with traditional copper pipe tinning equipment, the number of working parts on the equipment is greatly reduced, which can greatly reduce the floor space occupied by the equipment. More processing equipment can be placed in the same factory, thereby further increasing product output and indirectly reducing production costs.

[0018] 2. The first driving mechanism includes a first guide rail arranged in the left-right direction, a first base slidably arranged on the first guide rail, and a first motor that drives the first base to move left and right. The working mechanism is fixed on the first base. The first motor is a servo motor. The first motor and the first base are servo-driven to drive the working head to move in the left-right direction, so that the moving direction and moving distance of the working mechanism are more accurate and more controllable, improving the running accuracy of the working mechanism, and thus improving the tinning accuracy of the copper tube.

[0019] 3. The second drive mechanism includes a second guide rail arranged in the front-back direction, a second base slidably arranged on the second guide rail, and a second motor that drives the second base to move back and forth. The rotating mechanism is fixed on the second base. The second motor and the second base are servo-driven to drive the rotating mechanism to move in the front-back direction, so that the moving direction and moving distance of the clamping mechanism are more accurate and more controllable, improving the running accuracy of the clamping mechanism, and thus improving the tinning accuracy of the copper tube.

[0020] 4. The rotating mechanism adopts a hollow spindle, which allows the spindle to have a large diameter and a light weight. The motor can simultaneously have the advantages of high torque output and fast response. The pipes for conveying liquids or gases are connected to the clamping drive unit through the hollow spindle. The pipes can be stored in the hollow spindle, which helps to protect the pipes.

[0021] 5. By providing an ejection mechanism on the clamping claws, the ejection mechanism ejects the copper tube from the forming groove during the opening of the clamping claws, thus avoiding the copper tube getting stuck on the clamping claws and having difficulty getting out, which would cause pulling and shaking between the clamping claws and the part removal device.

[0022] 6. By using three picking mechanisms to complete the steps of clamping, transporting, and stacking copper pipe fittings, the waiting time of the picking mechanism moving back and forth can be effectively reduced, thereby speeding up the tinning time of the copper pipe fittings and reducing the processing cost of the copper pipe fittings.

[0023] 7. By installing the second and third picking mechanisms alternately on the third guide rail, and driving the second and third picking mechanisms synchronously on the third guide rail by the picking mechanism drive unit, the number of parts on the equipment can be reduced, thereby reducing the component cost and floor space of the equipment.

[0024] 8. By separating the working device and the tin-applying device on both sides of the clamping device, the structure of the clamping device is simplified. The clamping device, working device, and tin-applying device have basically the same precision, thereby improving the tin-applying accuracy of copper pipe fittings. At the same time, the size of the worktable can be reduced, thus reducing the equipment footprint. The working device and the tin-applying device use the same guide rail, which can save the number of parts on the equipment, thereby reducing the component cost of the equipment.

[0025] 9. The tinning device includes a tinning mechanism and a tin feeding mechanism. The tinning mechanism works in conjunction with the tin feeding mechanism and the clamping device to complete the tinning, thereby improving the reliability of tinning and ensuring the tinning quality of copper fittings.

[0026] 10. By setting up a solder guide component to guide the solder wire to wind and adhere tightly to the solder trough, the solder wire can be better wound on the solder trough, which can reduce or avoid the occurrence of the solder wire falling off the solder trough during the movement of the soldering unit, thereby ensuring the yield of soldering of copper fittings.

[0027] This invention also proposes a method for tinning copper pipe fittings, using the tinning equipment for copper pipe fittings described in any of the above technical solutions. Therefore, this method for tinning copper pipe fittings has all the technical effects of the aforementioned tinning equipment for copper pipe fittings.

[0028] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the copper tube tin-laying equipment in an embodiment of the present invention; Figure 2 This is a top view of the copper tube tin-laying equipment in an embodiment of the present invention; Figure 3 This is a schematic diagram of the working device and clamping device in an embodiment of the present invention; Figure 4 This is a schematic diagram of the tin-plating device in an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the part-retrieving device in an embodiment of the present invention; Figure 7 This is another schematic diagram of the part-retrieving device in an embodiment of the present invention; Figure label: 100. Workbench; 200. Conveyor belt; 201. Positioning structure; 300. Working device; 310. Working mechanism; 311. Working turntable; 312. Working head; 3121. Grooving head; 3122. Flat solder head; 3123. Shaping head; 313. Rotating part of working turntable; 320. First drive mechanism; 321. First guide rail; 322. First base; 323. First motor; 400. Clamping device; 410. Clamping mechanism; 411. Clamping jaw; 4111. First groove; 412. Clamping drive unit; 420. Rotation mechanism; 430. Second drive mechanism; 431. Second guide rail; 432. Second base; 433. Second motor. 500. Soldering device; 510. Soldering mechanism; 511. Soldering unit; 5111. Soldering claw; 5112. Soldering claw drive unit; 5113. Second groove; 512. Soldering rotation unit; 513. Third drive mechanism; 5131. Third guide rail; 5132. Third base; 5133. Third motor; 514. Fourth drive mechanism; 520. Solder feeding mechanism; 521. Solder feeding bracket; 522. Solder feeding assembly; 5221. Roller; 5222. Clamping cylinder assembly; 5223. Cylinder drive unit; 523. Solder cutting assembly; 524. Solder winding assembly; 5241. Solder winding unit; 52411. Solder winding claw; 52412. First solder winding claw; 52413. Solder winding drive unit. 5242. Solder rotation unit; 525. Solder guiding assembly; 5251. Solder guiding roller; 5252. Solder guiding cylinder; 5253. Fixed bracket; 600. Picking device; 610. First picking mechanism; 611. Picking clamp; 612. Picking clamp rotation assembly; 613. Picking clamp lifting assembly; 614. Picking clamp moving assembly; 6141. First moving part; 6142. Second moving part; 620. Second picking mechanism; 621. Picking claw; 622. Picking claw rotation assembly; 623. Picking claw lifting assembly; 630. Third picking mechanism; 640. Picking drive mechanism; 641. Picking mechanism bracket; 642. Fifth guide rail; 643. Picking mechanism drive unit. Detailed Implementation

[0030] This invention proposes a copper tube tinning device, comprising a worktable and a working device, a clamping device, and a tinning device mounted thereon. The working device includes a working mechanism and a first driving mechanism for moving the working mechanism left and right. The working mechanism includes a rotatable work turntable and multiple working heads circumferentially arranged on the work turntable. The multiple working heads are respectively used for grooving, leveling tin, and shaping. The tinning device lays tin wire into a tin bath. The clamping device includes a rotatable clamping mechanism for clamping the copper tube and a second driving mechanism for moving the clamping mechanism back and forth. The working mechanism moves and the work turntable rotates to align one of the multiple working heads with the copper tube. The clamping mechanism drives the copper tube to move so that the working head extends into the copper tube. The clamping mechanism rotates to cooperate with the working mechanism to complete the corresponding process. This invention integrates multiple working components for tinning copper tubes onto a single working device, which, in conjunction with a clamping device, performs the grooving, tinning, and shaping processes on the copper tubes. This avoids the drawback of traditional copper tube tinning equipment requiring the copper tubes to move between multiple workstations, thus significantly reducing product processing time and consequently production costs. Furthermore, compared to traditional copper tube tinning equipment, the number of working components on this invention is greatly reduced, significantly minimizing the equipment's footprint. More processing equipment can be placed in the same factory, further increasing product output and indirectly reducing production costs.

[0031] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" or "a number" means two or more, unless otherwise expressly defined.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] Example 1: like Figures 1 to 7 As shown in the embodiment of the present invention, a copper pipe tin-laying device is used to sequentially complete the processes of grooving, tin-laying, tin-flattening, and shaping in the opening on the side of the copper pipe to be processed. The grooving process involves rolling a tin-receiving groove onto the inner wall of the copper pipe. The tin-laying process involves laying tin wire into the tin-receiving groove. The tin-flattening process involves cold-pressing the tin wire in the tin-receiving groove to flatten it. The shaping process involves shaping the flattened tin wire.

[0036] The copper pipe tinning equipment includes a worktable 100 and a conveyor belt 200, a pick-up device 600, a working device 300, a clamping device 400, and a tinning device 500 mounted on the worktable 100. The copper pipe tinning equipment also includes a control component (not shown) that controls the operation of the above mechanisms.

[0037] The working device 300 includes a working mechanism 310 and a first drive mechanism 320, which drives the working mechanism 310 to move left and right. The working mechanism 310 includes a rotatable turntable 311 and a plurality of working heads 312 circumferentially arranged on the turntable 311. The first drive mechanism 320 is fixed to the worktable 100.

[0038] In some embodiments, the working mechanism 310 further includes a working turntable rotating part 313, with the working turntable 311 mounted on the working turntable rotating part 313, and the working turntable rotating part 313 driving the working turntable 311 to rotate.

[0039] In some other embodiments, the working mechanism 310 further includes a working turntable rotating part 313, which is connected to the working turntable 311 to drive the working turntable 311 to rotate.

[0040] The working head 312 includes a grooving head 3121 for grooving, a soldering head 3122 for soldering, and a shaping head 3123 for shaping.

[0041] In one embodiment, the first driving mechanism 320 includes a first guide rail 321 arranged in a left-right direction, a first base 322 slidably disposed on the first guide rail 321, and a first motor 323 driving the first base 322 to move left and right. The working mechanism 310 is fixed on the first base 322. The first motor 323 is a servo motor, and the first motor 323 and the first base 322 are servo-driven to drive the working mechanism 310 to move in the left-right direction. This arrangement makes the moving direction and moving distance of the working mechanism 310 more accurate and controllable, improves the operating accuracy of the working mechanism 310, and thus improves the tinning accuracy of the copper tube.

[0042] In this embodiment, the first motor 323 and the first base 322 are connected by a lead screw and nut. In other embodiments, the first motor 323 and the first base 322 may also be connected by a gear and rack mechanism.

[0043] The clamping device 400 includes a clamping mechanism 410, a rotating mechanism 420, and a second driving mechanism 430, with the second driving mechanism 430 fixed to the worktable 100. The clamping mechanism 410 clamps the outer wall of a copper tube and includes at least two clamping jaws 411 and a clamping drive part 412 that drives the clamping jaws 411 to open and close. A first groove 4111 is formed on each clamping jaw 411. When the at least two clamping jaws 411 close, the first groove 4111 forms a forming groove surrounding the outer side of the copper tube. During the grooving process, the forming groove cooperates with a grooving head 3121 to roll a tin-receiving groove onto the inner wall of the copper tube. The clamping mechanism 410 is mounted on the rotating mechanism 420, which can drive the clamping mechanism 410 to rotate. The rotating mechanism 420 is mounted on the second driving mechanism 430, which can drive the clamping mechanism 410 and the rotating mechanism 420 to move back and forth.

[0044] In one embodiment, the second drive mechanism 430 includes a second guide rail 431 arranged in the front-back direction, a second base 432 slidably disposed on the second guide rail 431, and a second motor 433 driving the second base 432 to move back and forth. A rotating mechanism 420 is fixed to the second base 432, and the second motor 433 and the second base 432 are servo-driven to drive the rotating mechanism 420 to move in the front-back direction. This configuration makes the moving direction and distance of the clamping mechanism 410 more accurate and controllable, improving the operating accuracy of the clamping mechanism 410, and thus improving the soldering accuracy of the copper fittings.

[0045] In this embodiment, the second motor 433 and the second base 432 are connected by a lead screw and nut. In other embodiments, the second motor 433 and the second base 432 may also be connected by a gear and rack mechanism.

[0046] In one embodiment, the rotating mechanism 420 is a motor, which includes a stator, a rotor, and a main shaft rotating with the rotor. The main shaft is hollow. A clamping drive unit 412 is connected to the rotating mechanism 420. The clamping drive unit 412 is driven by hydraulic or pneumatic pressure. A pipe for conveying liquid or gas passes through the main shaft and is connected to the clamping drive unit 412. The hollow main shaft of the rotating mechanism 420 allows the main shaft to have a larger diameter and lighter weight, and the motor can simultaneously have the advantages of high torque output and fast response. The pipe for conveying liquid or gas is connected to the clamping drive unit 412 through the hollow main shaft, and the pipe can be housed in the hollow main shaft, which helps to protect the pipe.

[0047] The soldering apparatus 500 includes a soldering mechanism 510 and a solder feeding mechanism 520. The soldering mechanism 510 includes a soldering unit 511, which has a circumferentially formed solder trough. The soldering unit 511 is movable back and forth relative to the worktable 100, cooperating with the solder feeding mechanism 520 to wind solder wire in the solder trough. The soldering unit 511 is also movable back and forth and left and right relative to the worktable 100, cooperating with the clamping device 400 to lay the solder wire into the solder container. The soldering mechanism 510, in cooperation with the solder feeding mechanism 520 and the clamping device 400, completes the soldering process, thereby improving the reliability of soldering and ensuring the quality of soldering on copper fittings.

[0048] The soldering mechanism 510 also includes a soldering rotation unit 512, a third drive mechanism 513, and a fourth drive mechanism 514. The soldering unit 511 is mounted on the soldering rotation unit 512, and the soldering rotation unit 512 is mounted on the third drive mechanism 513. The soldering rotation unit 512 can drive the soldering unit 511 to rotate, and the third drive mechanism 513 can drive the soldering unit 511 to move back and forth. The fourth drive mechanism 514 is fixed to the worktable 100, and the third drive mechanism 513 is mounted on the fourth drive mechanism 514. The fourth drive mechanism 514 drives the third drive mechanism 513 and the soldering unit 511 to move left and right. The soldering unit 511 includes at least three soldering claws 5111 and a soldering claw drive part 5112 that drives the soldering claws 5111 to open and close. The soldering claws 5111 are fixed to the soldering claw drive part 5112, and a second groove 5113 is formed on the end of the claw 5111 away from the soldering claw drive part 5112. The soldering claw drive unit 5112 drives at least three soldering claws 5111 to close so that the ends of the at least three soldering claws 5111 away from the soldering claw drive unit 5112 form a cylindrical structure, and at least three second grooves 5113 are connected to form a circumferential solder groove surrounding the cylindrical structure. The diameter of the cylindrical structure is smaller than the opening on the side of the copper tube to be processed.

[0049] The fourth drive mechanism 514 includes a cylinder for driving the third drive mechanism 513, a guide rail for guiding the direction of movement of the third drive mechanism 513, and a fourth base for fixing the third drive mechanism 513. The soldering claw drive unit 5112 is a rotary cylinder.

[0050] In one embodiment, the third drive mechanism 513 includes a third guide rail 5131 arranged in the front-back direction, a third base 5132 slidably arranged on the third guide rail 5131, and a third motor 5133 that drives the third base 5132 to move. The tin plating unit 511 rotation unit is fixed on the third base 5132. The third motor 5133 is a servo motor. The third motor 5133 and the third base 5132 are servo driven to drive the tin plating unit 511 to move in the front-back direction.

[0051] The solder feeding mechanism 520 includes a solder feeding bracket 521 fixed on the worktable 100, and a solder feeding component 522, a solder cutting component 523, a solder winding component 524, and a solder guiding component 525 installed on the solder feeding bracket 521. The solder feeding component 522 feeds the solder wire, the solder cutting component 523 cuts the solder wire quantitatively, the solder winding component 524 cooperates with the solder application mechanism 510 to wind the solder wire onto the solder winding groove, and the solder guiding component 525 guides the solder wire to wind around and adhere tightly to the solder winding groove, so that the solder wire is better wound onto the solder winding groove, which can reduce or avoid the occurrence of the solder wire falling off the solder winding groove during the movement of the solder application unit 511, thereby ensuring the yield of solder application of copper fittings.

[0052] The solder feeding assembly 522 includes a roller 5221, a clamping cylinder assembly 5222, and a cylinder drive unit 5223. Solder wire is wound on the roller 5221. The clamping cylinder assembly 5222 clamps the solder wire to be fed, and the cylinder drive unit 5223 drives the clamping cylinder assembly 5222 to move back and forth along the wire feeding direction. The clamping cylinder assembly 5222 is mounted on the cylinder drive unit 5223. When the clamping cylinder assembly 5222 clamps the solder wire, the cylinder drive unit 5223 drives the clamping cylinder assembly 5222 to move forward to feed the wire. When the clamping cylinder assembly 5222 releases the solder wire, the cylinder drive unit 5223 drives the clamping cylinder assembly 5222 to move backward. Through one or more of the above steps, the solder feeding assembly 522 completes the solder feeding.

[0053] The solder winding assembly 524 includes a solder winding unit 5241 and a solder winding rotation unit 5242 for driving the solder winding unit 5241 to rotate. The solder winding unit 5241 includes at least three solder winding jaws 52411 corresponding to solder application jaws 5111 and a solder winding drive part 52413 for driving the opening and closing of the solder winding jaws 52411. The at least three solder winding jaws 52411 include a first solder winding jaw 52412, which abuts against the side of the solder wire to press the solder wire into the solder winding groove. The at least three solder winding jaws 52411 open to form a solder winding position therein. The solder winding drive part 52413 is a rotary cylinder.

[0054] The solder guiding assembly 525 includes a solder guiding roller 5251, a solder guiding cylinder 5252, and a fixing bracket 5253. The fixing bracket 5253 is fixed on the solder guiding cylinder 5252, and the solder guiding roller 5251 is mounted on the fixing bracket 5253 and can rotate around its axis. The solder guiding cylinder 5252 can push the solder guiding roller 5251 closer to the solder trough.

[0055] A conveyor belt 200 is positioned on one side of the workbench 100 to sequentially transport copper pipe fittings to be processed. Multiple positioning structures 201 are provided on the conveyor belt 200 for placing the copper pipe fittings, with the openings of the fittings to be processed mounted on the positioning structures 201. The copper pipe fittings on the conveyor belt 200 can be placed manually, sequentially, or sequentially using a vibratory feeder, a robotic arm, or a combination of these methods. The conveyor belt 200 drives the positioning structures 201 to move, thereby sequentially transporting the copper pipe fittings to the clamping position, where the picking device 600 clamps the copper pipe fittings.

[0056] In some embodiments, the conveyor belt 200 is further provided with a detection component, which detects whether a copper pipe fitting is placed on the clamp. The detection component can be a position sensor or a photoelectric sensor. The detection component works in conjunction with the control component to control the operation of the conveyor belt 200.

[0057] It is understood that in some embodiments, the detection component may also be disposed on the picking device 600. The detection component may be a pressure sensor, a position sensor, or a photoelectric sensor.

[0058] The part-picking device 600 is used to perform the following tasks: 1. Pick up the copper pipe to be processed from the conveyor belt 200; 2. Transport the copper pipe to be processed to the clamping device 400; 3. Pick up the processed copper pipe from the clamping device 400 and transport and stack it to the corresponding position.

[0059] The copper pipe tinning equipment starts working. The pick-up device 600 picks up the copper pipe to be processed and sends it to the clamping mechanism 410. The clamping mechanism 410 clamps the copper pipe. The opening on the side of the copper pipe to be processed faces the working device 300. The pick-up device 600 moves to another position to avoid other mechanisms.

[0060] A method for tinning copper tubing, the specific steps of which are as follows: S100, one of the working heads 312 on the working device 300 cooperates with the clamping device 400 to complete the grooving process; S200, the tin-applying device 500 and the clamping device 400 work together to complete the tin-applying process; S300, one of the working heads 312 on the working device 300 cooperates with the clamping device 400 to complete the tin-flattening process; S400, one of the working heads 312 on the working device 300 cooperates with the clamping device 400 to complete the shaping process.

[0061] Grooving process: The clamping mechanism 410 clamps the copper tube. The first drive mechanism 320 drives the working mechanism 310 to move to the working position, and the working rotating part drives the working turntable 311 to rotate so that the grooving head 3121 rotates to correspond with the opening of the copper tube. The second drive mechanism 430 drives the rotating mechanism 420 to move forward so that the working part of the grooving head 3121 enters the opening of the copper tube, and the side of the working part of the grooving head 3121 corresponds to the position of the forming groove. The rotating mechanism 420 drives the clamping mechanism 410 to rotate, and the first drive mechanism 320 drives the working mechanism 310 to continue to move a certain distance so that the working part of the grooving head 3121 laterally presses the inner wall of the copper tube and rolls out the tin-containing groove on the inner wall of the copper tube in cooperation with the forming groove. The first drive mechanism 320 drives the working mechanism 310 to move back to the working position. The grooving head 3121 returns to the center position of the opening of the copper tube. The rotating mechanism 420 rotates a predetermined number of times and then stops rotating. The second drive mechanism 430 drives the clamping mechanism 410 to move backward so that the grooving head 3121 exits the copper tube, completing the grooving. The first drive mechanism 320 drives the working mechanism 310 to move back to the initial position to avoid the tinning device 500.

[0062] Soldering process: Soldering claw 5111 closes, soldering clamp 52411 opens, and the third drive mechanism 513 drives the soldering mechanism 510 forward, extending the soldering claw 5111 into the soldering position. Solder feeding assembly 522 feeds solder, delivering the free end of the solder wire to the soldering groove. Soldering clamp 52411 closes to hold the soldering claw 5111, and the first soldering clamp 52412 abuts against the side of the solder wire to press the free end of the solder wire tightly into the soldering groove. Soldering rotation unit 5242 and soldering rotation unit 512 rotate synchronously. At the same time, solder guiding cylinder 5252 pushes solder guiding roller 5251 close to the soldering groove to guide the solder wire to wind and adhere tightly to the soldering groove. Simultaneously, the solder cutting assembly 523 quantitatively cuts the solder wire. After the solder winding rotation unit 5242 and the solder application rotation unit 512 complete a predetermined number of rotations, they stop. The solder winding jaws 52411 open, and the third drive mechanism 513 drives the solder application mechanism 510 to move backward, completing the solder winding. The fourth drive mechanism 514 drives the third drive mechanism 513 and the solder application mechanism 510 to move to the working position so that the solder application mechanism 510 corresponds to the opening position of the copper tube. The third drive mechanism 513 drives the solder application mechanism 510 to move forward, and the solder application mechanism 510 extends into the copper tube. The solder application jaw drive unit 5112 drives the solder application jaws 5111 to open circumferentially to fill the solder wire into the solder container, completing the solder application. The third drive mechanism 513 drives the solder application mechanism 510 to move backward, and the fourth drive mechanism 514 drives the third drive mechanism 513 and the solder application mechanism 510 to move back to the initial position.

[0063] In some embodiments, during the soldering process, after the soldering claw drive unit 5112 drives the soldering claw 5111 to open circumferentially and fill the solder wire into the solder container, the soldering rotation unit 512 drives the soldering claw 5111 to rotate circumferentially to fill the solder wire into the solder container more fully and firmly.

[0064] In some other embodiments, during the soldering process, after the soldering rotation unit 512 drives the soldering claw 5111 to rotate circumferentially, the soldering claw 5111 remains circumferentially open, and the third drive mechanism 513 drives the soldering mechanism 510 to move slightly backward so that the solder groove on the soldering claw 5111 leaves the solder receiving groove, thereby ensuring that the solder wire is filled into the solder receiving groove.

[0065] In some other embodiments, during the soldering process, after the third drive mechanism 513 drives the soldering mechanism 510 to move slightly backward, the soldering claw 5111 remains circumferentially open, and the soldering rotation unit 512 drives the soldering claw 5111 to rotate circumferentially again. The end of the soldering claw 5111 pre-cools and presses the solder wire in the solder bath, thereby ensuring that the solder wire is filled more fully and firmly in the solder bath.

[0066] Tinning process: The first drive mechanism 320 moves the working mechanism 310 to the working position, and the working rotating part drives the working turntable 311 to rotate so that the tinning head 3122 rotates to correspond with the opening of the copper tube. The second drive mechanism 430 moves the rotating mechanism 420 forward so that the working part of the tinning head 3122 enters the opening of the copper tube, and the side of the working part of the tinning head 3122 corresponds to the position of the tin-containing groove. The first drive mechanism 320 moves the working mechanism 310 a certain distance so that the side of the working part of the tinning head 3122 presses against the solder wire. The working rotating part drives the clamping assembly to rotate two revolutions and then stops so that the working part of the tinning head 3122 cold-presses and flattens the solder bar in the tin-containing groove and fills the tin-containing groove. The first drive mechanism 320 drives the working mechanism 310 to move back to the working position. The grooving head 3121 returns to the center position of the opening of the copper tube. The second drive mechanism 430 moves the clamping mechanism 410 backward so that the tinning head 3122 exits the copper tube, completing the tinning process. At this time, work unit 310 is still in its working position.

[0067] Shaping process: The rotating mechanism 420 drives the working turntable 311 to rotate so that the shaping head 3123 rotates to correspond with the opening of the copper tube. The second driving mechanism 430 drives the rotating mechanism 420 to move forward and then backward, so that the working part of the shaping head 3123 extends into the copper tube and exits the copper tube after passing through the tin bath. The first driving mechanism 320 drives the working mechanism 310 to move back to the initial position, completing the shaping. In the shaping process, the working part of the shaping head 3123 performs secondary cold pressing on the unflattened tin wire in the tin bath to complete the shaping.

[0068] Example 2: After the grooving process is completed, a tin-receiving groove is formed on the inner wall of the copper tube, and a corresponding rib is formed on the outer wall of the copper tube. The rib is formed in the forming groove, which can easily cause the copper tube to get stuck on one of the clamping jaws 411 and unable to be removed. During the opening of the clamping jaw 411, the clamping jaw 411 and the part-removing device 600 pull each other to make the copper tube leave the clamping jaw 411, which causes the clamping jaw 411 and / or the part-removing device 600 to shake. Based on Embodiment 1, in this embodiment, in order to avoid the copper tube getting stuck in the clamping jaw 411, the clamping jaw 411 is provided with an ejection mechanism. The ejection mechanism includes an ejection part and an ejection driving mechanism. The ejection part is movably disposed in the clamping jaw 411, and the ejection driving mechanism can drive the ejection part to extend into the inside of the clamping jaw 411 to eject the copper tube during the opening of the clamping jaw 411. The ejection drive mechanism can be a pneumatically driven cylinder or a hydraulically driven cylinder.

[0069] By providing an ejection mechanism on the clamping jaws 411, the ejection mechanism ejects the copper tube from the forming groove during the opening of the clamping jaws 411, thus avoiding the copper tube getting stuck on the clamping jaws 411 and having difficulty getting out, which would cause pulling and shaking between the clamping jaws and the part removal device 600.

[0070] Example 3: like Figure 1 , Figure 6 , Figure 7 As shown, based on embodiments one and two, in this embodiment, the picking device 600 includes a first picking mechanism 610, a second picking mechanism 620, and a third picking mechanism 630. The first picking mechanism 610 picks up copper pipes on the conveyor belt 200, the second picking mechanism 620 picks up copper pipes on the first picking mechanism 610 and transports them to the clamping mechanism 410, and the third picking mechanism 630 picks up the processed copper pipes on the clamping mechanism 410 and stacks them in the corresponding positions.

[0071] By employing three picking mechanisms to complete the steps of clamping, transporting, and stacking copper fittings, the waiting time of the picking mechanisms moving back and forth can be effectively reduced, thereby speeding up the tinning time of the copper fittings and reducing the processing cost of the copper fittings.

[0072] The first picking mechanism 610 includes an openable picking clamp 611, a picking clamp rotation assembly 612, a picking clamp lifting assembly 613, and a picking clamp moving assembly 614. The picking clamp 611 is fixed to the picking clamp rotation assembly 612, which is fixed to the picking clamp lifting assembly 613, which is fixed to the picking clamp moving assembly 614. The picking clamp 611 includes at least two clamps and a clamp drive unit for opening and closing the clamps. The at least two clamps close to grip the copper pipe fitting and open to release it. The picking clamp lifting assembly 613 raises the picking clamp 611, thereby removing the copper pipe fitting from the positioning structure 201 of the conveyor belt 200. The picking clamp rotation assembly 612 rotates the picking clamp 611 to adjust the direction of the opening of the copper pipe fitting for gripping by the second picking mechanism 620. The component retrieval clamp moving assembly 614 can drive the component retrieval clamp 611 to the working position to clamp the copper pipe on the conveyor belt 200. The component retrieval clamp moving assembly 614 can also drive the component retrieval clamp 611 to the standby position to avoid touching the copper pipes that move sequentially on the conveyor belt 200.

[0073] Among them, the part-retrieving clamp rotating assembly 612 is a rotary cylinder, and the part-retrieving clamp lifting assembly 613 is a linear cylinder.

[0074] The retrieval clamp moving assembly 614 includes a first moving part 6141 and a second moving part 6142. The first moving part 6141 includes a guide rail arranged in the front-back direction, a base for fixing the retrieval clamp lifting assembly 613, and a servo motor for driving the retrieval clamp lifting assembly 613 to move back and forth. The second moving part 6142 includes a guide rail arranged in the left-right direction, a base for fixing the first moving part 6141, and a servo motor for driving the first moving part 6141 to move left and right.

[0075] The second and third picking mechanisms 620 and 630 have the same structure, both including an openable and closable picking jaw 621, a picking jaw rotation assembly 622, and a picking jaw lifting assembly 623. The picking jaw 621 closes to grip the copper pipe fitting and opens to release it. The picking jaw rotation assembly 622 rotates the picking jaw 621 to control its orientation. The picking jaw lifting assembly 623 raises and lowers the picking jaw 621 to control its height.

[0076] The picking device 600 also includes a picking drive mechanism 640, which includes a picking mechanism bracket 641 fixed above the worktable 100, a fifth guide rail 642 mounted on the picking mechanism bracket 641, and a picking mechanism drive unit 643 mounted on the picking mechanism bracket 641. A second picking mechanism 620 and a third picking mechanism 630 are mounted at intervals on the fifth guide rail 642, and the picking mechanism drive unit 643 drives the second picking mechanism 620 and the third picking mechanism 630 to move synchronously.

[0077] The pick-up device 600 operates as follows during the tinning process of copper tubing. The first pick-up mechanism 610 moves forward and extends the pick-up clamp 611 into the conveyor belt 200 to grip the copper tubing. The pick-up clamp lifting assembly 613 raises the copper tubing to the same height as the pick-up jaws 621 of the second pick-up mechanism 620, and rotates the copper tubing to adjust the opening orientation so that the side of the copper tubing to be processed corresponds to the pick-up jaws 621. The second pick-up mechanism 620 grips the copper tubing. At this time, the clamping device 400, the working head 312, and the tinning device 500 cooperate to perform the tinning work on the previous copper tubing. The second pick-up mechanism 620 and the third pick-up mechanism 630 are located between the conveyor belt 200 and the clamping device 400. The first pick-up mechanism 610 opens the pick-up clamp 611 to release the copper tubing, and the pick-up clamp 611 rotates and descends back to its initial position; simultaneously, the first pick-up mechanism 610 moves backward back to its initial position. After the previous copper pipe fitting has been tinned, the third picking mechanism 630 moves towards the clamping device 400, and the second picking mechanism 620 moves synchronously to a position between the conveyor belt 200 and the clamping device 400. The third picking mechanism 630 picks up the finished copper pipe fitting and continues to move away from the conveyor belt 200, stacking the copper pipe fittings in the corresponding position. At the same time, the second picking mechanism 620 moves to the position of the clamping device 400 and hands the copper pipe fitting over to the clamping device 400 for clamping. Subsequently, the second picking mechanism 620 and the third picking mechanism 630 move synchronously between the conveyor belt 200 and the clamping device 400. Among them, the second picking mechanism 620 is closer to the conveyor belt to pick up the next copper pipe fitting.

[0078] By mounting the second picking mechanism 620 and the third picking mechanism 630 alternately on the fifth guide rail 642, and driving the second picking mechanism 620 and the third picking mechanism 630 synchronously on the fifth guide rail 642 by the picking mechanism drive unit 643, the number of parts on the equipment can be reduced, thereby reducing the component cost and floor space of the equipment.

[0079] When the second part-retrieving mechanism 620 delivers the copper pipe fitting to the clamping device 400, the part-retrieving jaw rotation assembly 622 drives the part-retrieving jaw 621 to rotate, changing the direction of the copper pipe fitting gripped by the part-retrieving jaw 621. The part-retrieving jaw lifting assembly 623 drives the part-retrieving jaw 621 to descend, allowing the clamping device 400 to grip the copper pipe fitting. When the third part-retrieving mechanism 630 grips the copper pipe fitting processed on the clamping device 400, the part-retrieving jaw rotation assembly 622 drives the part-retrieving jaw 621 to rotate, changing the direction of the part-retrieving jaw 621. The part-retrieving jaw lifting assembly 623 drives the part-retrieving jaw 621 to descend, allowing the part-retrieving jaw 621 to grip the processed copper pipe fitting from the clamping device 400. When the second picking mechanism 620 and the third picking mechanism 630 are located between the conveyor belt 200 and the clamping device 400, in order to avoid collisions between the two and other devices on the equipment, the picking claw rotating assembly 622 keeps the picking claw 621 facing in the same direction as the movement direction of the second picking mechanism 620 and the third picking mechanism 630, and the picking claw lifting assembly 623 drives the picking claw 621 to rise so that the picking claw 621 is kept in a high position.

[0080] Example 4: like Figure 1 , Figure 4 As shown, based on embodiments one to three, in this embodiment, the working device 300 and the soldering device 500 are respectively disposed on both sides of the clamping device 400, and the fourth driving mechanism 514 is slidably disposed on the first guide rail 321. The fourth driving mechanism 514 drives the soldering unit 511 to move on the first guide rail 321.

[0081] The working device 300 and the tin-applying device 500 move left and right respectively to cooperate with the clamping device 400 to complete the tin-applying process of the copper pipe fittings. If the working device 300 and the tin-applying device 500 are set on the same side of the clamping device 400, the clamping device 400 needs to advance different distances to complete the corresponding work when the two cooperate with the clamping device 400. This results in an increase in the complexity of the clamping device 400 mechanism and makes it difficult to maintain consistent precision in cooperation with the working device 300 and the tin-applying device 500. At the same time, setting the working device 300 and the tin-applying device 500 on the same side of the clamping device 400 will also increase the longitudinal depth of the worktable 100, thereby increasing the floor space occupied by the equipment. By distributing the working device 300 and the tin-applying device 500 on opposite sides of the clamping device 400, the structure of the clamping device 400 is simplified. The clamping device 400, working device 300, and tin-applying device 500 have essentially the same precision in their cooperation, thereby improving the tin-applying precision of the copper fittings. At the same time, the size of the worktable 100 can be reduced, thus reducing the equipment's floor space. The working device 300 and the tin-applying device 500 use the same guide rail, which can save on the number of parts on the equipment, thereby reducing the equipment's component costs.

[0082] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A copper pipe fitting tinning equipment, comprising a worktable and a working device, a clamping device, and a tinning device disposed thereon, characterized in that, The working device includes a working mechanism and a first driving mechanism for driving the working mechanism to move left and right. The working mechanism includes a rotatable working turntable and a plurality of working heads circumferentially arranged on the working turntable. The plurality of working heads include a grooving head for rolling out a solder trough from the inner wall of the copper tube, a flattening head for flattening the solder wire in the solder trough, and a shaping head for shaping the flattened solder wire. The soldering device cooperates with the clamping device to lay the solder wire into the solder trough. The clamping device includes a clamping mechanism for clamping the copper tube and is rotatable, and a second driving mechanism for driving the clamping mechanism to move back and forth. The working mechanism moves and the working turntable rotates to align one of the working heads with the position of the copper tube. The clamping mechanism moves to insert the working head into the copper tube. The clamping mechanism rotates to cooperate with the working device to complete the corresponding process. The clamping mechanism includes at least two clamping claws and a clamping drive unit for driving the clamping claws to open and close. A first groove is formed on the clamping claw. The at least two clamping claws close together to form a forming groove surrounding the outside of the copper tube. The forming groove cooperates with the grooving head to roll out a tin-receiving groove on the inner wall of the copper tube. The clamping jaw is also provided with an ejection mechanism, which includes an ejection part and an ejection driving mechanism. The ejection part is movably disposed in the clamping jaw, and the ejection driving mechanism drives the ejection part to extend from the inside of the clamping jaw to eject the copper tube during the opening of the clamping jaw. The tin-applying device includes a tin-applying mechanism and a tin-feeding mechanism. The tin-applying mechanism includes a tin-applying unit with a tin-winding groove formed on it. The tin-applying unit and the tin-feeding mechanism work together to wind tin wire on the tin-winding groove. The tin-applying unit and the clamping device work together to lay the tin wire into the tin-receiving groove.

2. The copper pipe fitting tin-laying equipment as described in claim 1, characterized in that, The first driving mechanism includes a first guide rail arranged in the left-right direction, a first base slidably arranged on the first guide rail, and a first motor that drives the first base to move left and right. The working mechanism is fixed on the first base, and the first motor and the working mechanism are servo driven.

3. The copper pipe fitting tin-laying equipment as described in claim 1, characterized in that, The clamping device further includes a rotating mechanism, the clamping mechanism is fixed on the rotating mechanism, the rotating mechanism drives the clamping mechanism to rotate, the second driving mechanism includes a second guide rail arranged in the front-back direction, a second base slidably arranged on the second guide rail, and a second motor that drives the second base to move back and forth, the rotating mechanism is fixed on the second base, and the second motor is servo-driven with the rotating mechanism.

4. The copper pipe fitting tin-laying equipment as described in claim 3, characterized in that, The rotating mechanism includes a stator, a rotor, and a main shaft that rotates with the rotor. The main shaft is hollow. The clamping drive unit is connected to the rotating mechanism. The clamping drive unit is driven by hydraulic or pneumatic pressure. A pipe for conveying liquid or gas passes through the main shaft and is connected to the clamping drive unit.

5. The copper pipe fitting tin-laying equipment as described in claim 1, characterized in that, The workbench is also equipped with a conveying device for transporting copper pipe fittings. The conveying device includes a first picking mechanism, a second picking mechanism and a third picking mechanism. The first picking mechanism clamps the copper pipe fittings on the conveying device, the second picking mechanism clamps the copper pipe fittings on the first picking mechanism and transports them to the clamping mechanism, and the third picking mechanism clamps the processed copper pipe fittings on the clamping mechanism and stacks them in the corresponding positions.

6. The copper pipe fitting tin-laying equipment as described in claim 5, characterized in that, The conveying device also includes a picking-up driving mechanism, which includes a third guide rail disposed above the worktable, a bracket supporting the third guide rail, and a picking-up mechanism driving unit mounted on the bracket. The second picking-up mechanism and the third picking-up mechanism are installed alternately on the third guide rail, and the picking-up mechanism driving unit drives the second picking-up mechanism and the third picking-up mechanism to move synchronously.

7. The copper pipe fitting tin-laying equipment as described in claim 1, characterized in that, The working device and the tin-applying device are respectively disposed on both sides of the clamping device. The first driving mechanism includes a first guide rail arranged in the left-right direction. The first driving mechanism drives the working mechanism to move on the first guide rail. The soldering device further includes a fourth driving mechanism. The soldering unit is fixed on the fourth driving mechanism, which is slidably disposed on the first guide rail. The fourth driving mechanism drives the soldering unit to move on the first guide rail.

8. The copper pipe fitting tin-laying equipment as described in claim 7, characterized in that, The solder feeding mechanism also includes a solder guiding component, which guides the solder wire to wind around and adhere to the solder winding groove.

9. A method for tinning copper pipe fittings, characterized in that, This includes using a copper tube tin-plating device as described in any one of claims 1 to 8, with the following specific steps: S100, The working device and the clamping device cooperate to complete the grooving process; S200, The tin-applying device and the clamping device cooperate to complete the tin-applying process; S300, The working device and the clamping device cooperate to complete the tin-flattening process; S400, The working device and the clamping device cooperate to complete the shaping process.

Images