Expanded tube flaring device for heat exchanger

Abstract

The utility model discloses a heat exchanger expanded tube flaring device which comprises a main machine frame, a plurality of vertical guide columns are fixed to the left portion and the right portion of the top face of a top plate of the main machine frame, a bottom plate of a top shell is fixed to the tops of all the vertical guide columns, and the bottom ends of two vertical screw rods are movably connected to the top plate of the main machine frame through bearings. The upper portion of the vertical screw is movably connected to a bottom plate of the top shell through a bearing, a connecting shaft part formed at the top of the vertical screw extends into the top shell and is fixedly provided with a double-row transmission chain wheel, and a lifting servo motor is fixed to the bottom face of the middle of the rear portion of the bottom plate of the top shell. According to the pipe expanding and reaming device, after a vertical pipe is expanded, top end reaming can be conducted, pipe expanding and reaming can be achieved through one device, the device cost is greatly reduced, and meanwhile the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger processing equipment technical field more specifically relates to a heat exchanger pipe expansion flaring device. BACKGROUND

[0002] The evaporator and the condenser are important components in air conditioning refrigeration system, the evaporator and the condenser are generally composed of heat exchange coil and radiating fin, and the heat exchange coil is composed of multiple U-shaped connecting parts and vertical pipe parts, and the radiating fin is clamped in all vertical pipe parts, which needs to expand the vertical pipe part to make the radiating fin clamped on the vertical pipe part to realize fixation.

[0003] The existing processing mode is to install multiple lower U-shaped connecting parts on the lower support plate, clamp the bottom of the vertical pipe part at the connecting end of the corresponding U-shaped connecting part below, then insert all the radiating fins into the corresponding vertical pipe, expand the vertical pipe to realize clamping, and subsequently need to ream the top of the vertical pipe, which needs to be expanded and reamed in two devices, which is troublesome and ineffective, and the two independent devices have high manufacturing cost. SUMMARY

[0004] The utility model discloses a heat exchanger pipe expansion flaring device, which can expand the vertical pipe and ream the top end after expansion, and one device can satisfy the expansion and reaming, greatly reducing the equipment cost and improving the processing efficiency.

[0005] The utility model discloses a heat exchanger pipe expansion flaring device, which can expand the vertical pipe and ream the top end after expansion, and one device can satisfy the expansion and reaming, greatly reducing the equipment cost and improving the processing efficiency.

[0006] A heat exchanger pipe expansion flaring device, comprising a main frame, the top surface of the top plate of the main frame is fixed with multiple vertical guide columns on the left and right parts, the bottom plate of the top shell is fixed on the top of all vertical guide columns, the bottom end of two vertical screws is movably connected to the top plate of the main frame through a bearing, the upper part of the vertical screw is movably connected to the bottom plate of the top shell through a bearing, the top part of the vertical screw is formed with a connecting shaft part extending into the top shell and fixed with a double-row transmission sprocket, the middle bottom surface of the rear part of the bottom plate of the top shell is fixed with a lifting servo motor, the top end of the output shaft of the lifting servo motor extends out of the top surface of the bottom plate of the top shell and is fixed with a driving double-row sprocket, one of the sprockets of the driving double-row sprocket is tensioned on a chain through one of the corresponding double-row transmission sprockets, and the other sprocket of the driving double-row sprocket is tensioned on a chain through the corresponding sprocket of the other double-row transmission sprocket.

[0007] The upper parts of the two vertical screws are screwed with lifting sleeves, the two lifting sleeves are fixed on a lifting plate, and the bottom surface of the lifting plate is fixed with multiple vertically extending pipe expansion cores.

[0008] The lower part of the lifting plate is provided with a lower transverse clamping fixing device, and the upper part of the lower transverse clamping fixing device is provided with a horizontal fixing plate installed on the corresponding vertical guide columns;

[0009] Two connecting parts extending backward are formed on the rear wall surface of the lifting plate, and a vertical push rod is fixed on each of the two connecting parts. The bottom end of the two vertical push rods is fixed to a counterbored connecting plate, and a plurality of counterbored heads are fixed to the bottom surface of the counterbored connecting plate;

[0010] A plurality of guide sleeves extending downward and out of the bottom surface of the bottom fixing plate are fixed to the first vertical through holes formed in the bottom fixing plate of the lower transverse clamping fixing device. The guide sleeves are in communication with the corresponding first vertical through holes. A downward extending jaw sleeve rod is fixed in the second vertical through hole formed in the upper horizontal fixing plate. The jaw sleeve rod is inserted into the corresponding guide sleeve below, and the bottom end of the jaw sleeve rod extends out of the bottom end of the corresponding guide sleeve. The bottom end of the jaw sleeve rod is a jaw part. A tube expanding core rod is inserted into the corresponding jaw sleeve rod;

[0011] The top plate of the main rack below the lower transverse clamping fixing device is fixed with front and rear extending side rails on the left and right sides of the middle top surface. The bottom surface of the lower moving plate is fixed with lower moving sliders on the left and right parts. The side rails are inserted into the front and rear extending guide grooves formed in the bottom surface of the corresponding lower moving sliders. The top surface of the lower moving plate is fixed with a lower support frame in the middle. A plurality of mounting through holes are formed in the top plate of the lower support frame. The pull rod body of the lower clamping device extends out of the bottom surface and is inserted into the corresponding mounting through hole. The lower clamping device corresponds to the corresponding jaw sleeve rod above;

[0012] The top surface of the top plate of the main rack is fixed with a rear moving oil cylinder at the rear part. The end part of the push rod of the rear moving oil cylinder is fixed to the rear part of the lower moving plate.

[0013] The lower transverse clamping fixing device comprises an upper horizontal fixing plate. The front and rear parts of the bottom surface of the upper horizontal fixing plate are fixed with left and right extending transverse rails. The right side of the front part and the left side of the rear part of the upper horizontal fixing plate are fixed with push motor frames. The transverse moving oil cylinders are fixed on the corresponding push motor frames. The middle moving plate is located directly below the upper horizontal fixing plate. The middle moving plate has a central through groove in the middle. Two vertical screws and all tube expanding core rods are inserted into the central through groove. The ends of the push rods of the two transverse moving oil cylinders are fixed at the right end and the left end of the middle moving plate, respectively. The front and rear parts of the top surface of the middle moving plate are fixed with a plurality of transverse moving sliders. The transverse rails are inserted into and cooperate with the sliding grooves of the corresponding transverse moving sliders;

[0014] The front wall surface and the rear wall surface of the middle moving plate are movably connected with guide bearings through hinge shafts, the front and rear connecting side plates are located at the front and rear parts of the middle moving plate, the guide bearings are inserted into the corresponding oblique waist-shaped through grooves formed on the connecting side plates, the outer side walls of the guide bearings are tightly attached to the inner side walls of the corresponding oblique waist-shaped through grooves, and the oblique waist-shaped through grooves extend obliquely from left to right and upward.

[0015] The bottom surfaces of the two connecting side plates are fixed with bottom fixed plates, and the left and right parts of the bottom fixed plates are inserted into the corresponding vertical guide columns.

[0016] The lower clamping device comprises a lower clamping shell, a U-shaped groove extending downward is formed in the middle of the top surface of the lower clamping shell, side grooves extending downward are formed in the middle of the top surfaces of the front and rear side walls of the U-shaped groove, a middle long-shaped through groove extending forward and backward is formed in the middle of the lower clamping shell, a middle connecting shaft is located in the upper part of the middle long-shaped through groove, the two ends of the middle connecting shaft are fixed on the left and right side walls of the middle long-shaped through groove, vertical waist-shaped through grooves are formed on the left and right side walls of the middle long-shaped through groove below the middle connecting shaft, the two ends of the adjusting rod are inserted into the two vertical waist-shaped through grooves, a pulling rod is installed in the middle of the adjusting rod, the bottom end of the pulling rod extends out of the bottom end of the vertical through hole formed in the middle of the bottom surface of the middle long-shaped through groove, an annular groove is formed in the lower inner side wall of the vertical through hole, a compression spring is inserted into the annular groove, the top end of the compression spring is pressed against the top surface of the annular groove, the bottom end of the compression spring is pressed against the top surface of the annular block fixed on the lower outer side wall of the pulling rod, the middle parts of the front and rear clamping claws are inserted into the middle connecting shaft, the upper parts of the front and rear clamping claws are formed with arc-shaped clamping parts extending oppositely, the arc-shaped clamping parts are inserted into the corresponding side grooves, the middle parts of the lower parts of the front and rear clamping claws are formed with long-shaped through grooves, and the adjusting rod is inserted into the corresponding long-shaped through grooves.

[0017] The protruding effect of the utility model is:

[0018] Compared with the prior art, the utility model can expand the top end after expanding the vertical pipe, and one equipment can satisfy pipe expansion and hole expansion, so that the equipment cost is greatly reduced, and the processing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a partial structure schematic view of the utility model;

[0020] Figure 2 is Figure 1 is an angle changing partial structure schematic view of the utility model;

[0021] Figure 3 is a partial structure schematic view of the utility model without the upper horizontal fixed plate and other components;

[0022] Figure 4 is a partial structure schematic view of the utility model without the upper horizontal fixed plate, the middle moving plate and other components;

[0023] Figure 5 is a partial sectional view of the utility model;

[0024] Figure 6 is a partial structure schematic view at the middle moving plate;

[0025] Figure 7 is a partial structure schematic view of the lower clamping device;

[0026] Figure 8 is a partial sectional view of the lower clamping device without two clamping claws;

[0027] Figure 9 is a partial structure schematic view between the tube expanding core rod, the jaw sleeve rod and the guide sleeve. DETAILED DESCRIPTION

[0028] Embodiment, see as Figures 1 to 9 shown, a heat exchanger tube expanding and flaring device, including main rack 10, the top surface of the top plate of the main rack 10 is fixed with multiple vertical guide columns 11 in the left and right parts, the bottom plate of top shell 20 is fixed at the top of all vertical guide columns 11, the bottom end of two vertical screw rods 12 is movably connected on the top plate of main rack 10 through bearing, the upper part of vertical screw rod 12 is movably connected on the bottom plate of top shell 20 through bearing, the top part of vertical screw rod 12 is shaped into a connecting shaft part and is fixed with double-row transmission sprocket 13, the middle bottom surface of the rear part of the bottom plate of top shell 20 is fixed with lifting servo motor 21, the top end of the output shaft of lifting servo motor 21 extends out of the top surface of the bottom plate of top shell 20 and is fixed with driving double-row sprocket 22, one of the sprockets of driving double-row sprocket 22 and one of the corresponding sprockets of double-row transmission sprocket 13 are tensioned on a chain, the other sprocket of driving double-row sprocket 22 and the corresponding sprocket of the other double-row transmission sprocket 13 are tensioned on a chain; the chain is omitted and not shown in the drawing of the embodiment.

[0029] The upper part of two vertical screw rods 12 is screwed with lifting screw sleeve 14, two lifting screw sleeves 14 are fixed on lifting plate 15, the bottom surface of lifting plate 15 is fixed with multiple vertically extending tube expanding core rods 16;

[0030] The lower part of the lifting plate 15 is provided with a lower transverse clamping fixing device 30, the upper part horizontal fixing plate 31 of the lower transverse clamping fixing device 30 is installed on the left and right corresponding vertical guide column 11; the upper part horizontal fixing plate 31 of the lower transverse clamping fixing device 30 is inserted into the left and right corresponding vertical guide column 11, the inner side wall of the corresponding insertion hole of the upper part horizontal fixing plate 31 is fixed with a guide sleeve, the bottom end outer side wall of the guide sleeve is formed with a radial extension edge, the top surface of the radial extension edge is fixed on the bottom surface of the upper part horizontal fixing plate 31, and the bottom surface of the radial extension edge is pressed against the top surface of the limiting piece 110 fixed on the middle outer side wall of the corresponding vertical guide column 11;

[0031] The top surface of the left and right parts of the upper part horizontal fixing plate 31 is fixed with two first vertical guide connecting rods 1, the first vertical guide connecting rod 1 is inserted into the corresponding vertical guide hole of the left or right part of the lifting plate 15, and the top end of the first vertical guide connecting rod 1 protrudes from the top surface of the lifting plate 15 and is fixed with a limiting nut, and the bottom surface of the limiting nut is pressed against the top surface of the lifting plate 15;

[0032] The lifting plate 15 and the upper part horizontal fixing plate 31 are further provided with two upper and lower corresponding guide connecting plates 60, the two guide connecting plates 60 are inserted into the corresponding first vertical guide connecting rod 1 and vertical guide column 11, the middle part of the guide connecting plate 60 is fixed with an intermediate guide plate 61, and the expanded tube core rod 16 is inserted into the corresponding vertical guide hole of the intermediate guide plate 61;

[0033] The left and right parts of the upper guide connecting plate 60 are fixed with a plurality of second vertical guide connecting rods 2, the second vertical guide connecting rod 2 is inserted into the corresponding vertical guide hole of the left or right part of the lifting plate 15, the top end of the second vertical guide connecting rod 2 protrudes from the top surface of the lifting plate 15 and is fixed with a limiting nut, and the bottom surface of the limiting nut is pressed against the top surface of the lifting plate 15;

[0034] The left and right parts of the lower guide connecting plate 60 are fixed with a plurality of third vertical guide connecting rods 3, the third vertical guide connecting rod 3 is inserted into the corresponding vertical guide hole of the left and right parts of the upper guide connecting plate 60 and the corresponding vertical guide hole of the left or right part of the lifting plate 15, the top end of the third vertical guide connecting rod 3 protrudes from the top surface of the lifting plate 15 and is fixed with a limiting nut, and the bottom surface of the limiting nut is pressed against the top surface of the lifting plate 15 (the limiting nut is omitted in the figure).

[0035] Further, the rear wall surface of the lifting plate 15 is formed with two rearward extending connecting parts, two vertical push rods 151 are fixed on the two connecting parts, the bottom ends of the two vertical push rods 151 are fixed with the same counterbore connecting plate 152, and the bottom surface of the counterbore connecting plate 152 is fixed with a plurality of counterbore heads 153;

[0036] The bottom fixing plate 32 of the lower transverse clamping fixing device 30 is fixed with an intermediate connecting plate, which is opposite to the middle through slot of the bottom fixing plate 32. A plurality of downwardly extending guide sleeves 33 are fixed at the first vertical through holes formed on the intermediate connecting plate and extend out of the bottom surface of the intermediate connecting plate. The guide sleeves 33 extend out of the bottom end of the middle through slot and communicate with the corresponding first vertical through holes. The middle part of the upper horizontal fixing plate 31 is formed with a central through slot, and the bottom surface of the upper horizontal fixing plate 31 is fixed with an upper intermediate connecting plate. A plurality of second vertical through holes are formed on the upper intermediate connecting plate and communicate with the central through slot of the upper horizontal fixing plate 31. A plurality of clamping sleeve rods 34 are fixed on the upper intermediate connecting plate and communicate with the corresponding second vertical through holes. The clamping sleeve rods 34 extend out of the bottom end of the corresponding second vertical through holes and are inserted into the corresponding guide sleeves 33 below. The bottom end of the clamping sleeve rod 34 is a clamping jaw part, and the outer wall surface from the upper part to the middle part of the clamping jaw part is a tapered wall surface. The outer diameter from the middle part to the lower part is greater than the inner diameter of the guide sleeve 33. The tube expanding core rod 16 is inserted into the vertical central through hole of the corresponding clamping sleeve rod 34. The clamping jaw part is composed of a plurality of segment bodies. The outer side wall of the bottom end of the clamping sleeve rod 34 is a tapered wall surface and a cylindrical sleeve part from the upper part to the lower part. Adjacent two segment bodies have a gap therebetween.

[0037] The top plate of the main rack 10 below the lower transverse clamping fixing device 30 is fixed with front and rear extending side rails 40 on the left and right sides of the middle top surface. The bottom surface of the lower moving plate 41 is fixed with lower moving sliders 411 on the left and right sides. The side rails 40 are inserted into the front and rear extending guide slots formed on the bottom surface of the corresponding lower moving sliders 411. The top surface of the lower moving plate 41 is fixed with a lower support frame 42 in the middle. A plurality of mounting through holes are formed on the top plate of the lower support frame 42. The pull rod body 53 of the lower clamping device 50 extends out of the bottom surface and is inserted into the corresponding mounting through hole. The bottom end of the pull rod body 53 extends out of the bottom end of the mounting through hole. The lower clamping device 50 corresponds to the corresponding clamping sleeve rod 34 above.

[0038] The top surface of the top plate of the main rack 10 is fixed with a rear moving oil cylinder 17 at the rear part. The end part of the push rod of the rear moving oil cylinder 17 is fixed at the rear part of the lower moving plate 41.

[0039] Further, the lower transverse clamping fixing device 30 comprises an upper horizontal fixing plate 31, the front and rear parts of the bottom surface of the upper horizontal fixing plate 31 are fixed with left and right extending transverse guide rails 311, the right side of the front part and the left side of the rear part of the upper horizontal fixing plate 31 are fixed with push motor frames 312, the transverse moving oil cylinders 313 are fixed on the corresponding push motor frames 312, the middle moving plate 35 is right below the upper horizontal fixing plate 31, the middle part of the middle moving plate 35 is provided with a central through groove, the two vertical screw rods 12 and all the expanded tube core rods 16 are inserted into the central through groove, the ends of the push rods of the two transverse moving oil cylinders 313 are fixed at the right end and the left end of the middle moving plate 35 respectively, the front and rear parts of the top surface of the middle moving plate 35 are fixed with a plurality of transverse moving sliding blocks 351, the transverse guide rails 311 are inserted into the sliding grooves of the corresponding transverse moving sliding blocks 351 and cooperate with the sliding grooves;

[0040] The front and rear wall surfaces of the middle moving plate 35 are movably connected with guide bearings 352 through hinge shafts, the front and rear connecting side plates 36 are located at the front and rear parts of the middle moving plate 35, the guide bearings 352 are inserted into the corresponding oblique waist-shaped through grooves 361 formed on the connecting side plates 36, the outer side walls of the guide bearings 352 are tightly attached to the inner side walls of the corresponding oblique waist-shaped through grooves 361, the oblique waist-shaped through grooves 361 extend obliquely from left to right and upward;

[0041] The bottom surfaces of the two connecting side plates 36 are fixed with a bottom fixing plate 32, the left and right parts of the bottom fixing plate 32 are inserted into the corresponding vertical guide columns 11.

[0042] Further, the lower clamping device 50 comprises a lower clamping shell 51, the top middle part of the lower clamping shell 51 is formed with a downward extending U-shaped groove, the top middle parts of the front and rear side walls of the U-shaped groove are formed with downward extending side grooves, the middle part of the lower clamping shell 51 is formed with a front and rear extending middle long-shaped through groove, a middle connecting shaft is located at the upper part of the middle long-shaped through groove, the two ends of the middle connecting shaft are fixed on the left and right side walls of the middle long-shaped through groove, the left and right side walls of the middle long-shaped through groove below the middle connecting shaft are formed with vertical waist-shaped through grooves, the two ends of the adjusting rod 52 are inserted into the two vertical waist-shaped through grooves, the middle part of the adjusting rod 52 is installed with a pulling rod 53, the bottom end of the pulling rod 53 extends out of the bottom end of the vertical through hole formed in the middle part of the bottom surface of the middle long-shaped through groove, the lower inner side wall of the vertical through hole is formed with an annular groove, the compression spring 54 is inserted into the annular groove, the top end of the compression spring 54 is pressed against the top surface of the annular groove, the bottom end of the compression spring 54 is pressed against the top surface of the annular block fixed on the lower outer side wall of the pulling rod 53, the middle parts of the front and rear clamping claws 55 are inserted into the middle connecting shaft, the upper parts of the front and rear clamping claws 55 are formed with oppositely extending arc-shaped clamping parts 551 which are inserted into the corresponding side grooves, the lower parts of the front and rear clamping claws 55 are formed with long-shaped through grooves, the adjusting rod 52 is inserted into the corresponding long-shaped through grooves.

[0043] Further, the bottom end of the lower clamping shell 51 is fixed with a bottom positioning pin 56 on the left and right sides.

[0044] Further, the top surface of the lower moving plate 41 is fixed with a vertical support column 43 on the left and right sides, and the front wall surface of the two vertical support columns 43 is fixed with a rear vertical plate 44, and the upper and lower parts of the front wall surface of the left side of the rear vertical plate 44 is fixed with two connecting rods, and the left end of the front flip cover plate 45 is movably connected to the two connecting rods through a hinge shaft.

[0045] Further, the front wall surface of the right side of the rear vertical plate 44 is fixed with a limiting block 46, the middle part of the limiting block 46 is formed with a middle through slot extending forward and backward, the middle part of the front wall surface of the right end of the front flip cover plate 45 is fixed with two moving guide rails corresponding in upper and lower positions, the opposite wall surfaces of the two moving guide rails are formed with a through slot extending left and right, the limiting plate 47 is between the two moving guide rails, the upper and lower parts of the limiting plate 47 are inserted into the corresponding through slots, the right side of the limiting plate 47 is fixed with a limiting part 471, the limiting part 471 is inserted into the middle through slot of the limiting block 46, and the middle part of the front wall surface of the limiting plate 47 is fixed with a holding part.

[0046] In use, the U-shaped bent pipe part of the heat exchanger to be processed (the heat exchanger to be processed in the embodiment is a finned air conditioner heat exchanger composed of a plurality of heat dissipation fins installed on a S-shaped coiled pipe body, which is a conventional structure and will not be described in detail here, and is not shown in the drawings) is inserted into the corresponding U-shaped groove, and the arc-shaped clamping parts 551 of the two clamping claws 55 are opened outward, so that the U-shaped bent pipe part is completely inserted into the U-shaped groove, then the elastic recovery of the compression spring 54 is used to make the pull rod 53 descend, so that the arc-shaped clamping parts 551 of the two clamping claws 55 are close to each other, thereby clamping and fixing the U-shaped bent pipe part.

[0047] The lower part of the vertical pipe of the heat exchanger is inserted into the corresponding end of the U-shaped bent pipe part, all the heat dissipation fins are inserted into all the vertical pipes, and all the vertical pipes and heat dissipation fins are between the rear vertical plate 44 and the front flip cover plate 45, which can be opened outward by moving the limiting plate 47, so that the limiting part 471 is moved out of the middle through slot of the limiting block 46, that is, the front flip cover plate 45 is opened outward, facilitating the installation of all the vertical pipes and heat dissipation fins.

[0048] Then, the output shaft of the lifting servo motor 21 runs reversely, so that the lifting plate 15 is lifted, and thus the tube expanding core rod 16 is moved out of the corresponding vertical tube. Then, the two horizontal moving oil cylinders 313 run, and the middle moving plate 35 is horizontally moved to the left, so that the guide sleeve 33 is lifted back to the original position. At this time, the claw part at the bottom end of the corresponding claw sleeve rod 34 is loosened and no longer clamps the vertical tube.

[0049] Then, the output shaft of the lifting servo motor 21 runs reversely, so that the lifting plate 15 is lifted, and thus the tube expanding core rod 16 is moved out of the corresponding vertical tube. Then, the two horizontal moving oil cylinders 313 run, and the middle moving plate 35 is horizontally moved to the left, so that the guide sleeve 33 is lifted back to the original position. At this time, the claw part at the bottom end of the corresponding claw sleeve rod 34 is loosened and no longer clamps the vertical tube.

[0050] At the same time, the lifting servo motor 21 continues to run until the top of the vertical tube is moved out of the corresponding claw part. At this time, the lifting servo motor 21 stops running.

[0051] Then, the push rod of the rear moving oil cylinder 17 is retracted, and the lower moving plate 41 is moved backward, so that the heat exchange component that has been expanded is moved backward to the position limited by the push rod of the rear moving oil cylinder 17 (the last end of the stroke).

[0052] At this time, the top of all the vertical tubes is directly below the corresponding hole expanding head 153. Then, the lifting servo motor 21 runs, so that all the hole expanding heads 153 are lowered and inserted into the top of the corresponding inner end vertical tube to expand the hole. After completion, the lifting servo motor 21 runs, so that the hole expanding head 153 is lifted back to the original position. A pushing oil cylinder (not shown in the figure) is fixed in the middle of the top surface of the lower moving plate 41. The top end of the push rod of the pushing oil cylinder can fix a push plate, and the push plate is opposite to the bottom end of all the pulling rods 53.

[0053] After the reaming is completed, all the pulling rods 53 are lifted upward by pushing the pushing rod of the oil cylinder, the corresponding front and rear clamping claws 55 are loosened, and the processed heat exchanger can be directly disassembled, which is convenient to install, good in use effect and high in efficiency.

[0054] Finally, the above embodiments are only used for illustrating the utility model, and are not limited to the utility model, and the ordinary skilled in the related art can make various changes and modifications without departing from the spirit and scope of the utility model, therefore, all equivalent technical solutions also belong to the scope of the utility model, and the patent protection scope of the utility model should be defined by the claims.

Claims

1. A tube expanding and flaring device for heat exchangers, comprising a main frame (10), characterized in that: The left and right parts of the top surface of the top plate of the main rack (10) are fixed with a plurality of vertical guide columns (11), the bottom plate of the top housing (20) is fixed at the top of all the vertical guide columns (11), the bottom ends of the two vertical screws (12) are movably connected to the top plate of the main rack (10) through bearings, the upper parts of the vertical screws (12) are movably connected to the bottom plate of the top housing (20) through bearings, the top parts of the vertical screws (12) are shaped into connecting shaft parts extending into the top housing (20) and are fixed with double-row transmission chain wheels (13), the middle bottom surface of the rear part of the bottom plate of the top housing (20) is fixed with a lifting servo motor (21), the top end of the output shaft of the lifting servo motor (21) extends out of the top surface of the bottom plate of the top housing (20) and is fixed with a driving double-row chain wheel (22), one of the chain wheels of the driving double-row chain wheel (22) and one of the corresponding chain wheels of the double-row transmission chain wheel (13) are tensioned on a chain, the other chain wheel of the driving double-row chain wheel (22) and the corresponding chain wheel of the other double-row transmission chain wheel (13) are tensioned on a chain; The upper parts of the two vertical screws (12) are screwed with lifting screw sleeves (14), the two lifting screw sleeves (14) are fixed to a lifting plate (15), the bottom surface of the lifting plate (15) is fixed with a plurality of vertically extending tube expanding core rods (16); A lower transverse clamping and fixing device (30) is arranged below the lifting plate (15), an upper horizontal fixing plate (31) of the lower transverse clamping and fixing device (30) is inserted into the corresponding vertical guide columns (11), limit pieces (110) are fixed to the middle outer side walls of the corresponding vertical guide columns (11), and the bottom surface of the upper horizontal fixing plate (31) is pressed against the top surface of the corresponding limit pieces (110); Two rearward extending connecting parts are formed on the rear wall surface of the lifting plate (15), vertical push rods (151) are fixed to the two connecting parts, and the bottom ends of the two vertical push rods (151) are fixed to a counterbored connecting plate (152), the bottom surface of the counterbored connecting plate (152) is fixed with a plurality of counterbored heads (153); A plurality of downward extending guide sleeves (33) extending out of the bottom surface of a bottom fixing plate (32) are fixed to first vertical through holes formed in the bottom fixing plate (32) of the lower transverse clamping and fixing device (30), the guide sleeves (33) communicate with the corresponding first vertical through holes, downward extending claw sleeve rods (34) are fixed in second vertical through holes formed in the upper horizontal fixing plate (31), the claw sleeve rods (34) are inserted into the corresponding guide sleeves (33) below, the bottom ends of the claw sleeve rods (34) extend out of the bottom ends of the corresponding guide sleeves (33), the bottom ends of the claw sleeve rods (34) are claw parts, and the tube expanding core rods (16) are inserted into the corresponding claw sleeve rods (34). The left and right sides of the middle top surface of the top plate of the main frame (10) below the lower transverse clamping fixing device (30) are fixed with front and rear extending side rails (40), the left and right parts of the bottom surface of the lower moving plate (41) are fixed with lower moving sliders (411), the side rails (40) are inserted into the front and rear extending guide grooves formed on the bottom surface of the corresponding lower moving sliders (411), the middle top surface of the lower moving plate (41) is fixed with a lower support frame (42), a plurality of mounting through holes are formed on the top plate of the lower support frame (42), the pull rod body of the lower clamping device (50) extends from the bottom surface and is inserted into the corresponding mounting through hole, and the lower clamping device (50) corresponds to the corresponding claw sleeve rod (34) above. The rear part of the top surface of the top plate of the main frame (10) is fixed with a rear moving oil cylinder (17), and the end part of the push rod of the rear moving oil cylinder (17) is fixed to the rear part of the lower moving plate (41).

2. The tube expanding and flaring device for heat exchanger as claimed in claim 1, wherein: The lower transverse clamping fixing device (30) comprises an upper horizontal fixed plate (31), the front and rear parts of the bottom surface of the upper horizontal fixed plate (31) are fixed with left and right extending transverse rails (311), the right side of the front part and the left side of the rear part of the upper horizontal fixed plate (31) are fixed with push motor frames (312), transverse moving oil cylinders (313) are fixed on the corresponding push motor frames (312), the middle moving plate (35) is located directly below the upper horizontal fixed plate (31), the middle part of the middle moving plate (35) has a central through groove, the two vertical screw rods (12) and all the expanded tube core rods (16) are inserted into the central through groove, the ends of the push rods of the two transverse moving oil cylinders (313) are respectively fixed at the right end and the left end of the middle moving plate (35), and the front and rear parts of the top surface of the middle moving plate (35) are fixed with a plurality of transverse moving sliders (351), the transverse rails (311) are inserted into and matched with the slide grooves of the corresponding transverse moving sliders (351). The front and rear wall surfaces of the middle moving plate (35) are both movably connected with guide bearings (352) through hinge shafts, the front and rear connecting side plates (36) are located at the front and rear parts of the middle moving plate (35), the guide bearings (352) are inserted into the oblique waist-shaped through grooves (361) formed on the corresponding connecting side plates (36), the outer side walls of the guide bearings (352) are tightly attached to the inner side walls of the corresponding oblique waist-shaped through grooves (361), and the oblique waist-shaped through grooves (361) extend obliquely from left to right and upward. The bottom surfaces of the two connecting side plates (36) are fixed with a bottom fixed plate (32), and the left and right parts of the bottom fixed plate (32) are inserted into the corresponding vertical guide columns (11).

3. The tube expanding and flaring device for heat exchanger as claimed in claim 1 wherein: The lower clamping device (50) comprises a lower clamping shell (51), a U-shaped groove extending downward is formed in the middle of the top surface of the lower clamping shell (51), side grooves extending downward are formed in the middle of the top surface of the front and rear side walls of the U-shaped groove, a middle long-shaped through groove extending forward and backward is formed in the middle of the lower clamping shell (51), a middle connecting shaft is located in the upper part of the middle long-shaped through groove, the two ends of the middle connecting shaft are fixed on the left and right side walls of the middle long-shaped through groove, vertical waist-shaped through grooves are formed in the left and right side walls of the middle long-shaped through groove below the middle connecting shaft, the two ends of the adjusting rod (52) are inserted into the two vertical waist-shaped through grooves, a pulling rod (53) is installed in the middle of the adjusting rod (52), the bottom end of the pulling rod (53) extends out of the bottom end of the vertical through hole formed in the middle of the bottom surface of the middle long-shaped through groove, an annular groove is formed in the inner side wall of the lower part of the vertical through hole, a compression spring (54) is inserted into the annular groove, the top end of the compression spring (54) is pressed against the top surface of the annular groove, and the bottom end of the compression spring (54) is pressed against the top surface of the annular block fixed on the lower part of the outer side wall of the pulling rod (53), the middle parts of the front and rear clamping claws (55) are inserted into the middle connecting shaft, the upper parts of the front and rear clamping claws (55) are formed with arc-shaped clamping parts (551) extending oppositely, the arc-shaped clamping parts (551) are inserted into the corresponding side grooves, and the lower parts of the front and rear clamping claws (55) are formed with long-shaped through grooves in the middle, the adjusting rod (52) is inserted into the corresponding long-shaped through grooves.

4. The tube expanding and flaring device of claim 3, wherein: The left and right parts of the bottom end of the lower clamping shell (51) are fixed with bottom positioning pins (56), the bottom positioning pins (56) are inserted into the corresponding mounting through holes, and the outer side walls of the bottom positioning pins (56) are tightly attached to the inner side walls of the corresponding mounting through holes.

5. The expander device of claim 1, wherein: The middle parts of the left and right parts of the top surface of the lower moving plate (41) are fixed with vertical supporting columns (43), the front wall surface of the middle part of the two vertical supporting columns (43) is fixed with a rear vertical plate (44), the front wall surface of the left side of the rear vertical plate (44) is fixed with two connecting rods, and the left end of the front flip cover plate (45) is movably connected to the two connecting rods through a hinge shaft.

6. The tube expanding and flaring device of claim 5, wherein: The front wall surface of the right side of the rear vertical plate (44) is fixed with a limiting block (46), the middle part of the limiting block (46) is formed with a middle through groove extending forward and backward, the middle part of the right end of the front wall surface of the front flip cover plate (45) is fixed with two moving guide rails corresponding in height, the rear parts of the opposite wall surfaces of the two moving guide rails are formed with through grooves extending leftward and rightward, the limiting plate (47) is located between the two moving guide rails, the upper and lower parts of the limiting plate (47) are inserted into the corresponding through grooves, the right side of the limiting plate (47) is fixed with a limiting part (471), the limiting part (471) is inserted into the middle through groove of the limiting block (46), and the middle part of the front wall surface of the limiting plate (47) is fixed with a holding part.

7. The tube expanding and flaring device of claim 2 wherein: The top surfaces of the left and right parts of the upper horizontal fixed plate (31) are fixed with two first vertical guide connecting rods (1), the first vertical guide connecting rods (1) are inserted into the corresponding vertical guide through holes of the left or right part of the lifting plate (15), the top ends of the first vertical guide connecting rods (1) extend out of the top surface of the lifting plate (15) and are fixed with limiting nuts, and the bottom surfaces of the limiting nuts are pressed against the top surface of the lifting plate (15).

8. The expander device of claim 2, wherein: The lifting plate (15) and the upper horizontal fixed plate (31) are further provided with two upper and lower corresponding guide connecting plates (60), the two guide connecting plates (60) are inserted on the corresponding first vertical guide connecting rods (1) and vertical guide columns (11), the middle part of the guide connecting plate (60) is fixed with an intermediate guide plate (61), the tube expanding core rod (16) is inserted in the corresponding vertical guide through hole of the intermediate guide plate (61); The left part and the right part of the upper guide connecting plate (60) are fixed with a plurality of second vertical guide connecting rods (2), the second vertical guide connecting rod (2) is inserted in the corresponding vertical guide through hole of the left part or the right part of the lifting plate (15), the top end of the second vertical guide connecting rod (2) extends out of the top surface of the lifting plate (15) and is fixed with a limiting nut, the bottom surface of the limiting nut is pressed against the top surface of the lifting plate (15); The left part and the right part of the lower guide connecting plate (60) are fixed with a plurality of third vertical guide connecting rods (3), the third vertical guide connecting rod (3) is inserted in the corresponding vertical guide through hole of the left part and the right part of the upper guide connecting plate (60) and the corresponding vertical guide through hole of the left part or the right part of the lifting plate (15), the top end of the third vertical guide connecting rod (3) extends out of the top surface of the lifting plate (15) and is fixed with a limiting nut, the bottom surface of the limiting nut is pressed against the top surface of the lifting plate (15).

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