A flat tube feeding machine

Abstract

The present invention discloses a flat tube feeding machine, comprising a frame and a feeding device arranged on the frame, the feeding device comprising a feeding mechanism for horizontally conveying flat tubes, a lifting mechanism for receiving the flat tubes conveyed by the feeding mechanism and conveying them vertically, a transfer mechanism for first vertically and then horizontally displacing the lifted flat tubes through an adsorption plate, a workbench located on the frame, and an assembly mechanism located on the workbench for automatically assembling the flat tubes and fins. The present invention improves the existing problems of low efficiency in manual assembly of flat tubes and fins. The present invention has the advantages of few scratches on flat tubes, high feeding efficiency, low labor intensity, and high assembly efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of flat tube transmission, and in particular to a flat tube loading machine. Background Art

[0002] Heat exchangers are mostly used in some special industrial equipment. Flat tube radiators can be used for various heat media due to their small space occupation, light weight, easy installation and maintenance, and good pressure bearing performance. They are suitable for hotels, office buildings, schools, residential buildings and other buildings. In production, the radiator fins and flat tubes are generally installed in an alternating combination. The currently widely used technology is to manually collect the flat tubes separately after they are made and put them into a turnover basket. When using and assembling, the flat tubes are taken in turn and the fins that need to be assembled with the flat tubes are arranged to complete the assembly. This process is basically a manual operation. On the one hand, the assembly efficiency is low and the product consistency is poor; on the other hand, because the flat tubes are very thin and made of aluminum alloy, they are very soft and the surface is easily scratched. Repeated shipment in the turnover basket will cause surface scratches, seriously affecting product quality.

[0003] Therefore, the problem to be solved by the present invention is to realize the automatic assembly of flat tubes and fins, thereby ensuring that the scratches on the flat tubes are reduced on the basis of reducing the labor intensity of the staff, improving the quality of the product and also improving the assembly production efficiency of the flat tubes and fins. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a flat tube loading machine to solve the technical problems of low efficiency in manual assembly of flat tubes and fins in the prior art.

[0005] The present invention is realized by the following technical scheme: The present invention discloses a flat tube feeding machine, comprising a frame and a feeding device arranged on the frame, wherein the feeding device comprises:

[0006] A feeding mechanism, the feeding mechanism comprising:

[0007] Feeding conveyor belt;

[0008] A feeding rotary motion output device, the feeding rotary motion output device is fixed on the frame, and the feeding rotary motion output device drives the conveyor belt to perform rotary motion around the frame;

[0009] A plurality of positioners, wherein the plurality of positioners are evenly arranged on the feeding conveyor belt, and a positioning space is formed between two adjacent positioners to position the flat tube, and the positioner comprises a positioning piece fixed on the feeding conveyor belt and a positioning rod fixed on the positioning piece;

[0010] A lifting mechanism, the lifting mechanism comprising a fixing frame and a power assembly arranged on the fixing frame, the power assembly comprising:

[0011] Several lifting conveyor belts;

[0012] a first rotational motion output device, the rotational motion output device being fixed on the fixing frame;

[0013] A rotating shaft, wherein the output shaft of the first rotating motion output device drives the rotating shaft to rotate through a conveyor belt and drives a plurality of lifting conveyor belts arranged in cooperation with the rotating shaft to perform a linear lifting motion in a vertical direction along the fixed frame;

[0014] A plurality of lifters, wherein the plurality of lifters are located on different lifting conveyor belts, and the plurality of lifters form a horizontal receiving surface to receive and lift the flat tubes conveyed by the feeding conveyor belt to the positioning space corresponding to the end portion close to the lifting mechanism, and the lifters include a lifting seat fixed on the lifting conveyor belt and a lifting plate fixed on the lifting seat;

[0015] A transfer mechanism, the transfer mechanism comprising a cam transfer mechanism arranged on the frame and an adsorption plate fixedly connected to the cam transfer mechanism; a plurality of adsorption plates are evenly arranged on the adsorption plate so that the plurality of adsorption plates can adsorb and fix the flat tubes lifted to the upper end of the lifting conveyor belt, the cam transfer mechanism causes the adsorbed and fixed flat tubes to move, and the plurality of adsorption plates are controlled by the same control signal so that the flat tubes adsorbed by the adsorption plates can fall off the transfer mechanism;

[0016] The flat tube loading machine also includes a workbench located on the frame and an assembly mechanism arranged on the workbench, and the assembly mechanism includes:

[0017] A fin conveyor belt, wherein the axis of the fin conveyor belt is kept parallel to the axis of the flat tube adsorbed by the transfer mechanism;

[0018] A push plate, the push plate is located at the side of the fin conveyor belt and is driven by a push cylinder so that the push plate pushes the fin passing through the end of the push plate onto the workbench;

[0019] The assembly mechanism further comprises a fin guide plate located at the side of the fin conveyor away from the push plate, the flat tube guide plate arranged opposite to the fin guide plate, and a limit frame for the flat tube guide plate, wherein a fin guide channel is formed between the fin guide plate and the flat tube guide plate so that the fin pushed out by the push plate is in a state of being turned 90 degrees on the workbench;

[0020] A flat tube guide channel is formed between the flat tube guide plate and the limiting frame so that the flat tube transferred from the transfer mechanism is in a state of being turned 90 degrees on the workbench;

[0021] An assembly push plate is located between the fin guide plate and the workbench, the assembly push plate is driven by an assembly cylinder to perform linear motion, the assembly push plate is in contact with the fin surface on the workbench when stationary, the assembly push plate can make the fins and flat tubes contact each other to complete the assembly when extended, and at the same time, the assembly push plate can pass through the fin guide channel and the flat tube guide channel to push the assembled fins and flat tubes out of the limit frame away from the side of the flat tube guide plate.

[0022] Preferably, in order to adjust the width of the corresponding positioning space according to the width of the flat tubes of different specifications, an adjustment mechanism for adjusting the width of the positioning space is provided between the positioning rod and the positioning sheet, and the adjustment mechanism includes:

[0023] An adjustment slot, the adjustment slot being arranged on the positioning piece;

[0024] an adjusting block, the adjusting block being installed in the adjusting slot, the adjusting block being fixed to the positioning rod so that the positioning rod slides on the positioning piece;

[0025] A locking screw is inserted through the adjustment block, and a screw hole is provided on the adjustment block to cooperate with the locking screw. The locking screw contacts the bottom wall of the adjustment slot so that the locking screw can lock the position of the positioning rod relative to the positioning plate through friction.

[0026] Preferably, in order to prevent the positioning rod from damaging the flat tube, the cross-sectional shape of the positioning rod is rectangular, and the positioning rod is also wrapped with an elastic layer.

[0027] Preferably, in order to achieve stable horizontal transportation of flat tubes of different lengths, the loading device also includes a trustee mechanism, which includes a trustee belt, a pulley that drives the trustee belt and a first prime mover that drives the pulley to rotate, and the central axis of the trustee belt is arranged parallel to the central axis of the loading conveyor belt.

[0028] Preferably, in order to increase the speed of lifting the flat tubes upward to improve the production efficiency of the flat tube and fin assembly of the blanking machine, the number of the power components is two, and a lifting cylinder is also arranged between the lifting seat and the lifting plate, and the output shaft of the lifting cylinder is connected to the lifting plate. When the flat tubes supported on one of the power components are completely transferred by the transfer mechanism, the lifting cylinder drives the lifting plate to retract so that when the power component drops straight back, it will not hinder the other power component from lifting the flat tubes upward.

[0029] Preferably, in order to improve the accuracy of the interval at which the flat tube is lifted upward each time, the first rotational motion output device is configured as a servo motor.

[0030] Preferably, in order to quickly realize the displacement of the flat tube into the flat tube guide channel for assembly, the cam transfer mechanism includes:

[0031] The cam seat is further provided with:

[0032] A rotating shaft, wherein the rotating shaft is driven to rotate by a cam motor;

[0033] A first connecting rod, one end of which is fixedly connected to the rotating shaft;

[0034] a first guide rail, one end of which is hinged to the other end of the first connecting rod,

[0035] a second guide rail, the second guide rail being fixed on the cam seat and a slider of the second guide rail being slidably connected to the first guide rail;

[0036] a third guide rail, one end of which is fixed to the other end of the first guide rail, and a slider of the third guide rail is movably connected to the cam seat via a bearing seat;

[0037] An L-shaped track, wherein a guide block is provided at a hinge between the first guide rail and the first connecting rod and slides with the L-shaped track;

[0038] There are two cam seats, which are symmetrically mounted on the frame, and two ends of the adsorption plate are fixedly connected to the first guide rails of the two cam seats respectively;

[0039] The L-shaped track limits the movement trajectory of the adsorption plate to adsorb the flat tube to first vertical movement and then horizontal displacement.

[0040] Preferably, in order to ensure that the fins pushed into the fin guide channel by the push plate will not remain stationary on the fin guide plate due to excessive friction caused by excessive contact surface with the fin guide plate, and at the same time be able to quickly change the state of the fins to flip them 90 degrees, the fin guide plate includes an arc-shaped end that protrudes outward toward the fin channel side.

[0041] Preferably, in order to ensure that when the control signal is activated so that the flat tubes adsorbed by the adsorption plate can all fall off the transfer mechanism and slide into the flat tube guide channel, the flat tubes will not slide out of the flat tube guide channel due to position offset, at least a part of the flat tube guide plate is tilted away from the limit frame so that the flat tube guide channel formed by the flat tube guide plate and the limit frame is wide at the top and narrow at the bottom.

[0042] The present invention discloses a flat tube feeding machine. Compared with the prior art:

[0043] The present invention adopts different mechanisms to automatically load and convey the flat tubes and fins, avoiding the need to put the flat tubes and fins into a turnover basket for turnover, reducing the labor intensity and scratches on the flat tubes and fins, improving the product quality and the material conveying efficiency;

[0044] The present invention adopts a feeding mechanism, a lifting mechanism, a transfer mechanism and a fin conveyor belt to convey the flat tube and the fin respectively and preliminarily fix the relative positions of the flat tube and the fin, so as to facilitate the assembly of the fin and the flat tube;

[0045] The present invention adopts an assembly mechanism to automatically assemble the flat tubes and fins that have been delivered to the location, thereby greatly improving the assembly efficiency of the flat tubes and fins;

[0046] The invention has the advantages of less scratches on the flat tube, high feeding efficiency, low labor intensity and high assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0048] Figure 2 It is a structural schematic diagram of the feeding mechanism;

[0049] Figure 3 It is a structural diagram of the regulating mechanism;

[0050] Figure 4 is a schematic diagram of the cross-sectional structure of the positioning rod;

[0051] Figure 5 This is a schematic diagram of the structure of the trustee institution;

[0052] Figure 6 is a first three-dimensional structural schematic diagram of the lifting mechanism;

[0053] Figure 7 is a second three-dimensional structural schematic diagram of the lifting mechanism;

[0054] Figure 8 is a schematic diagram of the structure of the transfer mechanism;

[0055] Fig. 9 It is a structural schematic diagram of the cam transfer mechanism;

[0056] Fig.10 is a structural schematic diagram of the assembly mechanism;

[0057] 1. Frame; 2. Feeding mechanism; 21. Feeding conveyor belt; 22. Feeding rotary motion output device; 23. Positioner; 231. Positioning plate; 232. Positioning rod; 2321. Elastic layer; 24. Positioning space; 25. Adjusting mechanism; 251. Adjusting slot; 252. Adjusting block; 253. Locking screw; 26. Trusteeship mechanism; 261. Trusteeship belt; 262. Pulley; 263. First prime mover; 3. Lifting mechanism; 31. Fixed frame; 32. Power assembly; 321. Lifting conveyor belt; 322. First rotary motion output device; 323. Rotating shaft; 324. Conveyor belt; 325. Lifter; 3251. Lifting seat; 3252. Lift Plate; 326, lifting cylinder; 4, transfer mechanism; 41, cam transfer mechanism; 411, cam seat; 412, rotating shaft; 413, cam motor; 414, first connecting rod; 415, first guide rail; 416, second guide rail; 417, third guide rail; 418, L-shaped track; 419, guide block; 42, adsorption plate; 43, adsorption disk; 5, workbench; 6, assembly mechanism; 601, fin conveyor belt; 602, push plate; 603, push cylinder; 604, fin guide plate; 605, flat tube guide plate; 606, limit frame; 607, fin guide channel; 608, flat tube guide channel; 609, assembly push plate; 610, assembly cylinder. DETAILED DESCRIPTION

[0058] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0059] Example 1

[0060] Embodiment 1 discloses a flat tube loading machine, referring to Figure 1 , including a frame 1 and a feeding device arranged on the frame 1, the feeding device includes a feeding mechanism 2, and the feeding mechanism 2 transfers the stacked flat tubes in the horizontal direction, referring to Figure 2 , the feeding mechanism 2 comprises:

[0061] Feeding conveyor belt 21;

[0062] A feeding rotary motion output device 22 is fixed on the frame 1, and the feeding rotary motion output device 22 drives the conveyor belt to perform rotary motion around the frame 1;

[0063] A plurality of positioners 23 are evenly arranged on the feeding conveyor belt 21 , and a positioning space 24 is formed between two adjacent positioners 23 to position the flat tube. The positioner 23 includes a positioning piece 231 fixed on the feeding conveyor belt 21 and a positioning rod 232 fixed on the positioning piece 231 .

[0064] As the preferred solution, an adjustment mechanism 25 for adjusting the width of the positioning space 24 is provided between the positioning rod 232 and the positioning piece 231. Figure 3 , the regulating mechanism 25 comprises:

[0065] An adjusting slot 251, the adjusting slot 251 is disposed on the positioning piece 231;

[0066] An adjusting block 252, the adjusting block 252 is installed in the adjusting slot 251, and the adjusting block 252 is fixed to the positioning rod 232 so that the positioning rod 232 slides on the positioning sheet 231;

[0067] The locking screw 253 is inserted into the adjusting block 252. The adjusting block 252 is provided with a screw hole matched with the locking screw 253. The locking screw 253 abuts against the bottom wall of the adjusting slot 251 so that the locking screw 253 can lock the position of the positioning rod 232 relative to the positioning piece 231 through friction. This is to adjust the width of the corresponding positioning space 24 according to the width of the flat tubes of different specifications.

[0068] As the preferred embodiment of the above, refer to Figure 4 In order to prevent the flat tube from being scratched and damaged when it is placed between the positioning rods 232, the cross-section of the positioning rod 232 is rectangular, and the positioning rod 232 is also wrapped with an elastic layer 2321. The rectangular positioning rod 232 can make the placed flat tube contact on three sides during the transmission process to improve its positioning stability.

[0069] As the preferred embodiment of the above, refer to Figure 5 The feeding device further includes a trustee mechanism 26, which includes a trustee belt 261, a pulley 262 driving the trustee belt 261, and a first prime mover 263 driving the pulley 262 to rotate. The first prime mover 263 is configured as an electric motor. The central axis of the trustee belt 261 is parallel to the central axis of the feeding conveyor belt 21. In order to achieve stable horizontal transportation of flat tubes of different lengths, it is prevented that the flat tubes are bent and broken due to gravity when the feeding mechanism 2 transports the flat tubes due to excessive length.

[0070] The lifting mechanism 3 is used to make the workbench 5 for assembling the flat tube and the fins at a height convenient for manual operation. Figure 1 , Figure 6 and Figure 7 The lifting mechanism 3 includes a fixing frame 31 and a power assembly 32 disposed on the fixing frame 31, and the power assembly 32 includes:

[0071] A plurality of lifting conveyor belts 321;

[0072] A first rotational motion output device 322, which is fixed on the fixing frame 31;

[0073] The output shaft of the rotating shaft 323 and the first rotating motion output device 322 drives the rotating shaft 323 to rotate through a conveyor belt 324, and drives a plurality of lifting conveyor belts 321 arranged in cooperation with the rotating shaft 323 to perform a linear lifting motion in a vertical direction along the fixed frame 31. The first rotating motion output device 322 is configured as a servo motor;

[0074] A plurality of lifters 325 are provided, and the plurality of lifters 325 are located on different lifting conveyor belts 321. The plurality of lifters 325 form a horizontal receiving surface to receive and lift the flat tubes conveyed by the loading conveyor belt 21 to the positioning space 24 corresponding to the end near the lifting mechanism 3. The lifters 325 include a lifting seat 3251 fixed on the lifting conveyor belt 321 and a lifting plate 3252 fixed on the lifting seat 3251.

[0075] The motor forward circuit controls the lifting plate 3252 to lift upward, and the servo motor can improve the accuracy of the interval for each upward lifting of the flat tube, and can control the distance of each upward lifting of the thickness of the flat tube. When the first rotary motion output device 322 brings the upper end surface of the last flat tube lifted into contact with the adsorption plate 43, after the adsorption plate 43 absorbs the flat tube, the motor reverse circuit controls the first rotary motion output device 322 to rotate in the opposite direction to control the lifter 325 to return and descend until the upper surface of the lifting plate 3252 is flush with the position where the bottom surface of the flat tube horizontally transmitted by the feeding mechanism 2 is in contact.

[0076] As the preferred scheme mentioned above, the number of power components 32 is set to two, and a lifting cylinder 326 is also arranged between the lifting seat 3251 and the lifting plate 3252, and the output shaft of the lifting cylinder 326 is connected to the lifting plate 3252. When the flat tubes supported on one power component 32 are completely transferred by the transfer mechanism 4, they are lifted to the upper end of the lifting conveyor belt 321, and the lifting cylinder 326 drives the lifting plate 3252 to retract, and the other power component 32 just starts to lift the stacked flat tubes from the lower end of the lifting conveyor belt 321. The setting of the lifting cylinder 326 ensures that when the power component 32 falls back in a straight line, it will not cause obstruction to the other power component 32 lifting the flat tubes upward. The two groups of power components 32 increase the speed of lifting the flat tubes upward to improve the production efficiency of the flat tube and fin assembly of the feeder.

[0077] Transfer mechanism 4, transfer mechanism 4 is used to transfer the flat tube of lifting mechanism 3 to the flat tube guide channel 608, refer to Figure 8The transfer mechanism 4 includes a cam transfer mechanism 41 arranged on the frame 1 and an adsorption plate 42 fixedly connected to the cam transfer mechanism 41; a plurality of adsorption discs 43 are evenly arranged on the adsorption plate 42 so that the plurality of adsorption discs 43 can adsorb and fix the flat tube lifted to the upper end of the lifting conveyor belt 321, and the cam transfer mechanism 41 causes the adsorbed and fixed flat tube to be displaced, and the plurality of adsorption discs 43 are controlled by the same control signal so that the flat tube adsorbed by the adsorption disc 43 can fall off from the transfer mechanism 4; the adsorption disc 43 is provided with negative pressure by a vacuum generator, and the control signal can be generated by a button. When the flat tube contacts the adsorption disc 43 surface, the button is pressed to make the vacuum generator work, and the adsorption disc 43 generates negative pressure to firmly adsorb the flat tube, and then the transfer mechanism 4 displaces the adsorbed flat tube by one position, and when it is displaced to a position where it can enter the flat tube guide channel 608, the vacuum generator stops working, and the adsorption disc 43 stops adsorbing the flat tube and enters the flat tube channel to wait for assembly.

[0078] Preferably, in order to quickly realize the displacement of the flat tube into the flat tube guide channel 608 for assembly, refer to Fig. 9 , the cam transfer mechanism 41 comprises:

[0079] The cam seat 411 is also provided with:

[0080] A rotating shaft 412, the rotating shaft 412 is driven to rotate by a cam motor 413, and the cam motor 413 is configured as a servo motor;

[0081] A first connecting rod 414, one end of which is fixedly connected to the rotating shaft 412;

[0082] A first guide rail 415, one end of which is hinged to the other end of the first connecting rod 414,

[0083] A second guide rail 416, the second guide rail 416 is fixed on the cam seat 411 and a slider of the second guide rail 416 is slidably connected to the first guide rail 415;

[0084] A third guide rail 417, one end of which is fixed to the other end of the first guide rail 415, and a slider of the third guide rail 417 is movably connected to the cam seat 411 through a bearing seat;

[0085] The L-shaped track 418, the first guide rail 415 and the first connecting rod 414 are hinged with a guide block 419 that slides with the L-shaped track 418;

[0086] There are two cam seats 411 symmetrically mounted on the frame 1 , and the two ends of the adsorption plate 42 are fixedly connected to the first guide rails 415 of the two cam seats 411 respectively;

[0087] The L-shaped track 418 limits the movement trajectory of the adsorption plate 42 to adsorb the flat tube, which is first vertical movement and then horizontal displacement. After being transmitted to the right position, the cam motor 413 is reversed through a motor reversal circuit until the adsorption plate 43 contacts the flat tube surface on the lifting plate 3252 and stops reversing. Then the cam motor 413 is rotated forward through a motor forward motor and continues to move vertically first and then move horizontally.

[0088] At the same time, the feeding mechanism 2, the lifting mechanism 3, and the transfer mechanism 4 are used to automatically feed and convey the flat tubes, avoiding the need to put the flat tubes into a turnover basket for turnover, reducing labor intensity while also reducing scratches on the flat tubes, improving product quality while also improving material conveying efficiency; at the same time, determining the assembly direction and position of the flat tubes during the conveying process facilitates the subsequent assembly mechanism 6 to work.

[0089] Reference Figure 1 and Fig.10 The flat tube feeding machine further comprises a workbench 5 located on the frame 1 and an assembly mechanism 6 arranged on the workbench 5, and the assembly mechanism 6 comprises:

[0090] Fin conveyor belt 601, the axis of fin conveyor belt 601 is kept parallel to the axis of the flat tube adsorbed by transfer mechanism 4;

[0091] A push plate 602, which is located at the side of the fin conveyor belt 601 and is driven by a push cylinder 603 so that the push plate 602 pushes the fin passing through the end of the push plate 602 onto the workbench 5;

[0092] The assembly mechanism 6 also includes a fin guide plate 604 located on the side of the fin conveyor belt 601 away from the push plate 602, a flat tube guide plate 605 arranged opposite to the fin guide plate 604, and a limit frame 606 for the flat tube guide plate 605. A fin guide channel 607 is formed between the fin guide plate 604 and the flat tube guide plate 605 so that the fins pushed out by the push plate 602 are in a state of being flipped 90 degrees on the workbench 5; the fin guide channel 607 determines the position of the fin assembly, so that during the automatic assembly process, there is no need to manually adjust the relative position and direction of the flat tube and the fin, thereby improving the efficiency of assembly.

[0093] A flat tube guide channel 608 is formed between the flat tube guide plate 605 and the limiting frame 606 so that the flat tube transferred from the transfer mechanism 4 is in a state of being turned 90 degrees on the workbench 5;

[0094] The assembly push plate 609 is used for assembling the flat tubes and fins. The assembly push plate 609 is located between the fin guide plate 604 and the workbench 5. The assembly push plate 609 is driven by an assembly cylinder 610 to make linear motion. When the assembly push plate 609 is stationary, it contacts the fin surface on the workbench 5. When the assembly push plate 609 is extended, the fins and flat tubes can be assembled by contacting each other. At the same time, the assembly push plate 609 can pass through the fin guide channel 607 and the flat tube guide channel 608 to push the assembled fins and flat tubes out of the limiting frame 606 away from the side of the flat tube guide plate 605. The assembly mechanism 6 automatically combines the flat tubes and fins that have been delivered to the right place, greatly improving the assembly efficiency of the flat tubes and fins.

[0095] As the above preferred solution, refer to Fig.10 In order to ensure that the fins pushed into the fin guide channel 607 by the push plate 602 will not remain stationary on the fin guide plate 604 due to excessive friction caused by the large contact area with the fin guide plate 604, and to be able to quickly change the state of the fins to flip them 90 degrees, the fin guide plate 604 includes an arc-shaped end that protrudes outward toward the fin channel side.

[0096] As the above preferred solution, refer to Fig.10 In order to ensure that when the control signal is working, the flat tubes adsorbed by the adsorption plate 43 can all fall off the transfer mechanism 4 and slide into the flat tube guide channel 608, and the flat tubes will not slide out of the flat tube guide channel 608 due to position deviation, two-thirds of the flat tube guide plate 605 is tilted away from the limiting frame 606 so that the flat tube guide channel 608 formed by the flat tube guide plate 605 and the limiting frame 606 is wide at the top and narrow at the bottom.

[0097] When the flat tube stack is placed in the positioning space 24 and transferred to the end of the feeding mechanism 2, a group of power components 32 will lift the flat tubes received from the feeding mechanism 2 upward. When the first flat tube is lifted and fixed to the adsorption plate 43, the vacuum generator works to generate negative pressure to adsorb the flat tube, and then the cam motor 413 rotates forward to drive the flat tube to move vertically and then horizontally. When it is horizontally transferred to the L-shaped track 418, the vacuum generator stops working and the flat tube slides off the transfer mechanism 4. The fins enter the flat tube guide channel 608 through the flat tube guide plate 605 and wait for assembly. At the same time, the pushing plate 602 is extended by the pushing cylinder 603 to drive the fins transported on the fin conveyor belt 601 through the fin guide plate 604 and enter the fin guide channel 607 and wait for assembly. At this time, the assembly push plate 609 in contact with the fin surface is driven by the assembly cylinder 610 to press and combine the flat tubes and fins and push them to the workbench 5 for stacking. When a certain number is reached, the staff can tie them up.

[0098] The invention has the advantages of less scratches on the flat tube, high feeding efficiency, low labor intensity and high assembly efficiency.

Claims

1. A flat tube feeding machine, comprising a frame and a feeding device arranged on the frame, characterized in that: The feeding device comprises: A feeding mechanism, the feeding mechanism comprising: Feeding conveyor belt; A feeding rotary motion output device, the feeding rotary motion output device is fixed on the frame, and the feeding rotary motion output device drives the conveyor belt to perform rotary motion around the frame; A plurality of positioners, wherein the plurality of positioners are evenly arranged on the feeding conveyor belt, and a positioning space is formed between two adjacent positioners to position the flat tube, and the positioner comprises a positioning piece fixed on the feeding conveyor belt and a positioning rod fixed on the positioning piece; A lifting mechanism, the lifting mechanism comprising a fixing frame and a power assembly arranged on the fixing frame, the power assembly comprising: Several lifting conveyor belts; a first rotational motion output device, the rotational motion output device being fixed on the fixing frame; A rotating shaft, wherein the output shaft of the first rotating motion output device drives the rotating shaft to rotate through a conveyor belt and drives a plurality of lifting conveyor belts arranged in cooperation with the rotating shaft to perform a linear lifting motion in a vertical direction along the fixed frame; A plurality of lifters, wherein the plurality of lifters are located on different lifting conveyor belts, and the plurality of lifters form a horizontal receiving surface to receive and lift the flat tubes conveyed by the feeding conveyor belt to the positioning space corresponding to the end portion close to the lifting mechanism, and the lifters include a lifting seat fixed on the lifting conveyor belt and a lifting plate fixed on the lifting seat; A transfer mechanism, the transfer mechanism comprising a cam transfer mechanism arranged on the frame and an adsorption plate fixedly connected to the cam transfer mechanism; a plurality of adsorption plates are evenly arranged on the adsorption plate so that the plurality of adsorption plates can adsorb and fix the flat tube lifted to the upper end of the lifting conveyor belt, the cam transfer mechanism causes the adsorbed and fixed flat tube to move, and the plurality of adsorption plates are controlled by the same control signal so that the flat tube adsorbed by the adsorption plates can fall off the transfer mechanism; The flat tube loading machine also includes a workbench located on the frame and an assembly mechanism arranged on the workbench, and the assembly mechanism includes: A fin conveyor belt, wherein the axis of the fin conveyor belt is kept parallel to the axis of the flat tube adsorbed by the transfer mechanism; A push plate, the push plate is located at the side of the fin conveyor belt and is driven by a push cylinder so that the push plate pushes the fin passing through the end of the push plate onto the workbench; The assembly mechanism further comprises a fin guide plate located at a side of the fin conveyor belt away from the push plate, a flat tube guide plate arranged opposite to the fin guide plate, and a limit frame limited by the flat tube guide plate, and a fin guide channel is formed between the fin guide plate and the flat tube guide plate so that the fin pushed out by the push plate is in a state of being turned 90 degrees on the workbench; A flat tube guide channel is formed between the flat tube guide plate and the limiting frame so that the flat tube transferred from the transfer mechanism is in a state of being turned 90 degrees on the workbench; An assembly push plate, the assembly push plate is located between the fin guide plate and the workbench, the assembly push plate is driven by an assembly cylinder to make linear motion, the assembly push plate is in contact with the fin surface located on the workbench when stationary, and the assembly push plate can make the fin and the flat tube contact each other to complete the assembly when extended, and at the same time, the assembly push plate can pass through the fin guide channel and the flat tube guide channel to push the assembled fin and flat tube out of the limiting frame away from the side of the flat tube guide plate; An adjustment mechanism for adjusting the width of the positioning space is provided between the positioning rod and the positioning piece, and the adjustment mechanism comprises: An adjustment slot, the adjustment slot being arranged on the positioning piece; an adjusting block, the adjusting block being installed in the adjusting slot, the adjusting block being fixed to the positioning rod so that the positioning rod slides on the positioning piece; A locking screw, the locking screw is passed through the adjusting block, the adjusting block is provided with a screw hole matched with the locking screw, the locking screw abuts against the bottom wall of the adjusting slot so that the locking screw can lock and locate the position of the positioning rod relative to the positioning piece through friction; The feeding device also includes a trustee mechanism, which includes a trustee belt, a pulley that drives the trustee belt and a first prime mover that drives the pulley to rotate. The central axis of the trustee belt is arranged parallel to the central axis of the feeding conveyor belt.

2. A flat tube feeding machine according to claim 1, characterized in that: The cross-section of the positioning rod is rectangular, and the positioning rod is also wrapped with an elastic layer.

3. A flat tube feeding machine as claimed in claim 1, characterized in that: There are two power components, and a lifting cylinder is provided between the lifting seat and the lifting plate. The output shaft of the lifting cylinder is connected to the lifting plate. When all the flat tubes supported on one power component are transferred by the transfer mechanism, the lifting cylinder drives the lifting plate to retract so that when the power component descends linearly, it will not hinder the other power component from lifting the flat tube upward.

4. A flat tube feeding machine according to claim 1, characterized in that: The first rotational motion output device is configured as a servo motor.

5. The flat tube feeding machine according to claim 1, characterized in that: The cam transfer mechanism comprises: The cam seat is further provided with: A rotating shaft, wherein the rotating shaft is driven to rotate by a cam motor; A first connecting rod, one end of which is fixedly connected to the rotating shaft; a first guide rail, one end of which is hinged to the other end of the first connecting rod, a second guide rail, the second guide rail being fixed on the cam seat and a slider of the second guide rail being slidably connected to the first guide rail; a third guide rail, one end of which is fixed to the other end of the first guide rail, and a slider of the third guide rail is movably connected to the cam seat via a bearing seat; An L-shaped track, wherein a guide block is provided at a hinge between the first guide rail and the first connecting rod and slides with the L-shaped track; There are two cam seats, which are symmetrically mounted on the frame, and two ends of the adsorption plate are fixedly connected to the first guide rails of the two cam seats respectively; The L-shaped track limits the movement trajectory of the adsorption plate to adsorb the flat tube to first vertical movement and then horizontal displacement.

6. A flat tube feeding machine as claimed in claim 1, characterized in that: The fin guide plate includes an arc-shaped end, and the arc-shaped end protrudes outwardly toward the fin guide channel side.

7. A flat tube feeding machine according to claim 1, characterized in that: At least a portion of the flat tube guide plate is tilted away from the limiting frame so that the flat tube guide channel formed by the flat tube guide plate and the limiting frame is wider at the top and narrower at the bottom.

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