CN115475997A - Spiral finned tube fin gulleting production line - Google Patents

Abstract

The invention discloses a spiral finned tube fin slotting production line, which comprises a steel belt unreeling mechanism, a steel belt one-to-two slotting machine and a steel belt reeling mechanism which are sequentially arranged along the steel belt conveying direction, wherein the steel belt one-to-two slotting machine structurally comprises: the lower shaft driven to rotate by the lower shaft transmission mechanism is supported between a left support plate and a right support plate of the frame, a lower tooth cutter disc is installed at one side shaft end of the lower shaft, a plurality of lower tooth cutter grooves are evenly arranged on the peripheral surface of the lower tooth cutter disc at intervals along the edge of the cutter disc, a lower tooth cutter head is formed between every two adjacent lower tooth cutter grooves, an upper shaft is arranged on the frame above the lower shaft, the lower shaft and the upper shaft synchronously rotate through a gear assembly, an upper tooth opening disc is installed at the shaft end of the upper shaft, a plurality of upper tooth cutter grooves which can be just embedded by the lower tooth cutter heads of the lower tooth cutter disc are evenly arranged on the peripheral surface of the upper tooth cutter disc at intervals along the edge of the cutter disc, and an upper tooth cutter head is formed between every two adjacent upper tooth cutter grooves. The invention has the advantage of high working efficiency.

Description

Tooth punching production line for fins of spiral finned tubes

Technical Field

The invention relates to the technical field of auxiliary machining equipment for a spiral finned tube, in particular to a spiral finned tube fin slotting production line for slotting fins of a spiral finned tube.

Background

The spiral finned tube is the main heat exchange element in the indirect heating equipment who is used for retrieving the flue gas waste heat, and its structure mainly includes: the heat exchanger comprises a heat exchange tube and fins which are spirally arranged along the axial direction and are vertical to the outer wall of the heat exchange tube, wherein the fins are generally processed by a flat steel belt. Since the application of the turn-fin tube to production practice, the optimum design thereof has been studied. Research shows that the helical finned tube with the fin in the sawtooth structure is in an optimal structure, so that the heat exchange area of the tube bundle can be increased, and the resistance characteristic and the ash blockage can be reduced.

At present, the invention patent with the patent application number of 202110086460.0 discloses a high-speed steel belt tooth punching machine for punching a steel belt, which comprises a material discharging mechanism, a tooth punching mechanism, a servo material pulling mechanism and a material receiving mechanism, wherein the tooth punching mechanism comprises a tooth punching positioning module for positioning the steel belt and a rotating shaft arranged on one side of the tooth punching positioning module, a plurality of blade discs are sequentially sleeved on the rotating shaft, a blade head protruding out of the peripheral surface of each blade disc is arranged on each blade disc, and all the blade heads are sequentially distributed in a staggered manner from front to back, so that each blade head can pass through the tooth punching positioning module one by one and perform tooth punching on the steel belt in the tooth punching positioning module when rotating along with the rotating shaft. The tooth punching process comprises the following steps: the servo material pulling mechanism pulls a section of to-be-toothed flat steel belt into the tooth punching positioning module, then cutter heads on the blade discs rotate for a circle along with the rotating shaft to perform tooth punching on the section of to-be-toothed steel belt entering the tooth punching positioning module, after the section of the flat steel belt finishes tooth punching, the servo material pulling mechanism pulls a section of to-be-toothed flat steel belt into the tooth punching positioning module, and the cutter heads on the blade discs rotate for a circle along with the rotating shaft to perform tooth punching on the section of to-be-toothed steel belt entering the tooth punching positioning module.

The tooth punching machine has the following disadvantages: (1) When the teeth are formed, the cutter head rotates along with the rotating shaft and passes through the steel belt in the tooth forming positioning module, the cutter head cuts off a piece of toothed steel belt material from the steel belt, so that a toothed opening is formed in the edge of the steel belt, and the cut-off toothed steel belt material is waste material, so that the material waste is caused, and the production cost of enterprises is increased; (2) Incomplete separation of the tooth plates and incomplete falling of waste teeth can be caused, and secondary cleaning is needed; (3) Because the blades are combined bodies, the assembly requirement is high, and the blades can be cracked due to the fact that teeth are formed when the blades are spaced; (4) The structure is complicated, and servo drawing material mechanism is essential part, and receiving agencies need follow servo frequency of drawing material mechanism and carry out intermittent type formula receipts material moreover, and servo drawing material mechanism draws a section zigzag steel band back that draws promptly, and receiving agencies carries out once more to this section zigzag steel band and receives the material action, influences production efficiency.

Disclosure of Invention

The invention aims to provide a helical fin tooth punching production line which does not generate waste materials, can continuously produce and has high production efficiency.

In order to realize the purpose, the invention adopts the following technical scheme: the utility model provides a spiral finned tube fin gulleting production line, includes the steel band unwinding mechanism who is used for unreeling a flat steel band roll that arranges in proper order along steel band direction of delivery, the steel band that is used for rolling a continuous flat steel band and cuts into two continuous sawtooth shaped steel bands one divides two gulleting machines and is used for the steel band winding mechanism of two continuous sawtooth shaped steel bands of rolling simultaneously, the structure of steel band one divides two gulleting machines includes: the steel strip cutting machine comprises a rack, two support plates which are oppositely distributed left and right are installed at the top of the rack, a lower shaft driven to rotate by a lower shaft transmission mechanism is supported between the two support plates, a lower toothed cutter head is installed at one side shaft end of the lower shaft, a plurality of lower toothed cutter grooves are evenly arranged on the outer peripheral surface of the lower toothed cutter head at intervals along the edge of the cutter head, a lower toothed cutter head is formed between every two adjacent lower toothed cutter grooves, an upper shaft is arranged on the rack above the lower shaft, the lower shaft and the upper shaft rotate synchronously through a gear assembly, an upper toothed cutter head which corresponds to the lower toothed cutter head downwards is installed at the upper shaft end of the same side with the lower toothed cutter head, a plurality of upper toothed cutter grooves which can be just embedded into the lower toothed cutter head of the lower toothed cutter head are evenly arranged at intervals along the edge of the cutter head, an upper toothed cutter head which can just be just embedded into the lower toothed cutter head of the lower toothed cutter head is formed between every two adjacent upper toothed cutter grooves, and an upper toothed cutter head and a lower toothed cutter head which just embedded into the lower toothed cutter head of the lower toothed cutter head roll between the upper toothed cutter head and the upper toothed cutter head, so that a continuous steel strip which continuously rolls.

Further, aforementioned spiral finned tube fin gulleting production line, wherein: the structure of steel band unwinding mechanism includes: the stand, be fixed with the backup plate of vertical placing in one side of stand, it transversely is fixed with one at the stand copperial and unreels the pivot, it has the inner core to unreel the pivot transversely to wear out backup plate back movable sleeve through the stand level, evenly be provided with three first opening along circumference at the outer peripheral face of inner core, the outer core that supplies flat steel strip coil to embolia is overlapped at the outside of inner core, evenly be provided with three second opening along circumference at the outer peripheral face of outer core, the first opening of inner core and the second opening looks staggered arrangement of outer core, the tube socket is arranged in the outside of backup plate, detachably inserts the fender work or material rest that can cooperate and prevent that the flat steel strip coil of strip on the outer core from breaking away from the outer core with the backup plate on the tube socket.

Further, aforementioned spiral finned tube fin gulleting production line, wherein: the connection structure of the unreeling rotating shaft and the inner core specifically comprises: the bearing seat is arranged between the unreeling rotating shaft and the inner core and sleeved outside the unreeling rotating shaft, the bearing seat and the inner core are fixed through a connecting bolt, a bearing is arranged in the bearing seat, a bearing outer ring of the bearing is in interference tight fit with the bearing seat, a bearing inner ring of the bearing is in interference tight fit with a shaft body of the unreeling rotating shaft, a circle of positioning convex shoulder for the bearing inner ring to abut against is arranged on the unreeling rotating shaft body on one side of the bearing, a positioning washer for abutting against the bearing inner ring is sleeved on the unreeling rotating shaft body on the other side of the bearing, a first locking nut is in threaded connection with the unreeling rotating shaft body on the outer side of the positioning washer, and the first locking nut can push the positioning washer to move towards the bearing inner ring when screwed until the positioning washer abuts against the bearing inner ring on the positioning convex shoulder.

Further, aforementioned spiral finned tube fin gulleting production line, wherein: the structure of the steel belt winding mechanism comprises: the material receiving frame is internally supported with a winding rotating shaft driven by a winding motor to rotate, the winding motor is controlled by a PLC control system to act, three material blocking turntables are sleeved on the winding rotating shaft at intervals, and a material receiving core is sleeved on the winding rotating shaft between every two adjacent material blocking turntables.

Further, aforementioned spiral finned tube fin gulleting production line, wherein:

the concrete mounting structure of the upper gear cutter head on the upper shaft comprises: the upper shaft end used for installing the upper gear cutter disc is sequentially provided with a first conical shaft section and a first external thread shaft section from inside to outside along the axial direction, the surface of the first conical shaft section is smooth, the caliber of the first external thread shaft section is gradually reduced from inside to outside, the caliber of the first external thread shaft section is consistent with the caliber of the small-caliber end of the first conical shaft section, an inner hole used for being sleeved on the upper shaft end on the upper gear cutter disc is a conical hole with the caliber matched with the caliber of the first conical shaft section of the upper shaft, the upper gear cutter disc is tightly sleeved on the first conical shaft section of the upper shaft end through the conical hole, and the first external thread shaft section of the upper shaft end is in threaded connection with an upper locking nut used for locking and fixing the upper gear cutter disc sleeved on the first conical shaft section on the upper shaft end;

the concrete mounting structure of lower tooth cutter head in the lower shaft includes: the lower shaft end for installing the lower gear cutter head is sequentially provided with a second conical shaft section and a second external threaded shaft section from inside to outside along the axial direction, the surface of the second conical shaft section is smooth, the caliber of the second external threaded shaft section is gradually reduced from inside to outside, the caliber of the second external threaded shaft section is consistent with the caliber of the small-caliber end of the second conical shaft section, the lower gear cutter head is provided with a conical hole matched with the caliber of the second conical shaft section of the lower shaft by a hole in a sleeved mode, the lower gear cutter head is tightly sleeved on the second conical shaft section of the lower shaft end through the conical hole, and the second external threaded shaft section at the lower shaft end is in threaded connection with a lower locking nut used for locking and fixing the lower gear cutter head sleeved on the second conical shaft end at the lower shaft end.

Further, aforementioned spiral finned tube fin gulleting production line, wherein: the upper toothed cutter groove and the upper toothed cutter head of the upper toothed cutter disc are arranged on the large-caliber side of the inner hole of the upper toothed cutter disc, and the outer peripheral surface of the upper toothed cutter disc on the small-caliber side of the inner hole is provided with a circle of first limiting check ring protruding out of the outer wall of the upper toothed cutter disc; the lower tooth-shaped cutter groove and the lower tooth-shaped cutter head of the lower tooth cutter disc are arranged on the small-caliber side of the inner hole of the lower tooth cutter disc, the outer peripheral surface of the lower tooth cutter disc on the large-caliber side of the inner hole is provided with a circle of second limiting check ring protruding out of the outer wall of the lower tooth cutter disc, and the distance between the first limiting check ring and the second limiting check ring can just allow a flat steel belt to pass through.

Further, aforementioned spiral finned tube fin gulleting production line, wherein: the structure of the lower shaft transmission mechanism comprises: the power motor is arranged at the lower part of the rack and controlled by a PLC control system to act, a driving chain wheel is sleeved on an output shaft of the power motor, a driven chain wheel is sleeved at the shaft end of the lower shaft, a transmission chain is wound between the driving chain wheel and the driven chain wheel, a tensioning chain wheel which inwards compresses the transmission chain and tensions the transmission chain is arranged between the driving chain wheel and the driven chain wheel and can freely rotatably support the end part of the displacement adjusting screw rod, the displacement adjusting screw rod horizontally and transversely penetrates through a transverse guide hole arranged on the rack, and a pair of fastening nuts used for locking and fixing the displacement adjusting screw rod on the rack are in threaded connection on the displacement adjusting screw rod.

Further, aforementioned helical finned tube fin gulleting production line, wherein: the upper shaft passes through upper shaft lift adjustment mechanism and installs in the frame, and upper shaft lift adjustment mechanism's structure includes: the vertical guide grooves are respectively arranged on the supporting plates on the left side and the right side of the rack, a bearing seat is arranged in the vertical guide groove of each supporting plate in a sliding mode, shaft ends on the two sides of the upper shaft are supported in the two bearing seats through bearings, a screw rod seat is fixed at the top of each bearing seat, a vertical screw rod is fixed on each screw rod seat, a fixed cross beam is installed on the rack above each bearing seat, a through hole which penetrates through the fixed cross beam from top to bottom and corresponds to the vertical screw rod on the same side downwards is formed in each fixed cross beam, the vertical screw rod on each screw rod seat penetrates out of the corresponding fixed cross beam from the corresponding through hole upwards, and the vertical screw rod is connected with a limiting nut through threads.

Further, aforementioned helical finned tube fin gulleting production line, wherein: the steel belt one-in-two tooth punching machine is characterized in that a steel belt pressing component and a feeding guide wheel component are sequentially arranged on the input side of the steel belt one-in-two tooth punching machine along the steel belt conveying direction, and a steel belt pressing component and a discharging guide wheel component are sequentially arranged on the output side of the steel belt one-in-two tooth punching machine along the steel belt conveying direction.

Further, aforementioned helical finned tube fin gulleting production line, wherein: the structure of the steel pressing strip component comprises: one end of the material pressing rod is hinged to the rack on the input side between the upper tooth cutter disc and the lower tooth cutter disc through a pin shaft, and the other end of the material pressing rod is hinged to a pressing wheel through a rotating shaft.

Further, aforementioned spiral finned tube fin gulleting production line, wherein: the structure of pressure is led the subassembly and is included: and the two pressure plates are respectively positioned at the upper side and the lower side of the output steel belt cut by the upper tooth cutter disc and the lower tooth cutter disc.

Further, aforementioned spiral finned tube fin gulleting production line, wherein: the left supporting plate and the right supporting plate are connected together through four pull rods, a threaded locking hole is formed in the bottom of each supporting plate, a waist-shaped hole which is in the left-right direction and corresponds to the threaded locking hole is formed in the rack top plate corresponding to each supporting plate, bottom bolts penetrate through the corresponding waist-shaped hole and the corresponding threaded locking hole, and each supporting plate is installed on the rack top plate through the corresponding bottom bolts.

Further, aforementioned helical finned tube fin gulleting production line, wherein: the concrete mounting structure of upper shaft includes: the upper parts of the two supporting plates are oppositely provided with two upper mounting holes, an upper bearing seat is arranged in each upper mounting hole, upper bearings are respectively arranged at the shaft ends of two sides of the upper shaft, the upper shaft is supported in the two upper bearing seats of the two supporting plates through the two upper bearings, a first upper shaft anti-shifting assembly and a second upper shaft anti-shifting assembly for preventing the upper shaft from shifting left and right are arranged on an upper shaft body between the two supporting plates, the first upper shaft anti-shifting assembly is close to the inner side wall of the left supporting plate, the second upper shaft anti-shifting assembly is close to the inner side wall of the right supporting plate, the first upper shaft anti-shifting assembly is composed of a first shaft sleeve, a first flexible gasket and a first rigid locking gasket which are sequentially sleeved on the upper shaft from left to right, and the second upper shaft anti-shifting assembly is composed of a second shaft sleeve, a second flexible gasket and a second rigid locking gasket which are sequentially sleeved on the upper shaft from right to left; the specific mounting structure of lower axle includes: the lower parts of the two supporting plates are oppositely provided with two lower mounting holes, a lower bearing seat is arranged in each lower mounting hole, lower bearings are respectively arranged at the shaft ends of the two sides of the lower shaft, the lower shaft is supported in the two lower upper bearing seats of the two supporting plates through the two lower bearings, a third lower shaft anti-moving assembly and a fourth lower shaft anti-moving assembly which are used for preventing the lower shaft from moving left and right are arranged on a lower shaft body between the two supporting plates, the third lower shaft anti-moving assembly is close to the inner side wall of the left supporting plate, the fourth lower shaft anti-moving assembly is close to the inner side wall of the right supporting plate, the third lower shaft anti-moving assembly is a third shaft sleeve, a third flexible gasket and a third rigid locking gasket which are sequentially sleeved on the lower shaft from left to right, and the fourth lower shaft anti-moving assembly is a fourth shaft sleeve, a fourth flexible gasket and a fourth rigid locking gasket which are sequentially sleeved on the lower shaft from right to left.

Through the implementation of the technical scheme, the invention has the beneficial effects that: (1) When the teeth are formed, the flat steel belt is cut into two sawtooth-shaped steel belts in a rolling manner through the upper gear cutter head and the lower gear cutter head, and the two sawtooth-shaped steel belts can be just spliced into a complete flat steel belt when being butted, namely: waste materials cannot be generated in the process of tooth punching, so that material waste cannot be caused, and the cost of enterprises is reduced; (2) The steel belt winding mechanism and the steel belt one-in-two tooth punching machine synchronously act, the steel belt one-in-two tooth punching machine rolls the steel belt winding mechanism while cutting, and the whole tooth punching and winding process is continuous, so that the working efficiency is greatly improved; (3) A servo material pulling mechanism of the original tooth punching equipment is omitted, the equipment is simplified, and the structure is simpler; (4) The steel belt unwinding mechanism can unwind more smoothly, and the work efficiency is improved; (5) The production line adopts intelligent override, so that the working strength of workers is greatly reduced, and the labor cost is reduced; and (6) the tooth-shaped cutter head can be designed and replaced according to the requirement.

Drawings

FIG. 1 is a schematic structural diagram of a helical finned tube fin gulleting production line according to the invention.

FIG. 2 is a schematic representation of a steel strip variation.

Fig. 3 is a schematic structural diagram of a steel strip-in-two tooth punching machine.

Fig. 4 is a schematic structural view in the right-hand direction of fig. 3.

Fig. 5 is a schematic view of the positional relationship between the upper cutter disc and the lower cutter disc in the right-hand direction of fig. 4.

Fig. 6 is a schematic structural view of the upper and lower cutterheads shown in fig. 5 with the upper and lower cutterheads hidden.

Fig. 7 is a structural schematic diagram of the upper gear cutter head.

Fig. 8 is a schematic cross-sectional view of fig. 7.

Fig. 9 is a structural schematic diagram of the lower tooth cutter head.

Fig. 10 is a schematic cross-sectional view of fig. 9.

Fig. 11 is a schematic view of the assembly of the upper shaft and the upper cutterhead.

Fig. 12 is a schematic view of the assembly of the lower shaft and the lower tooth cutter head.

Fig. 13 is a schematic structural diagram of a steel strip unwinding mechanism.

Fig. 14 isbase:Sub>A schematic structural view of the sectionbase:Sub>A-base:Sub>A shown in fig. 13.

Fig. 15 is an enlarged schematic view of a portion B shown in fig. 14.

Fig. 16 is a schematic cross-sectional view of the unwinding spindle.

Fig. 17 is a schematic structural view of a steel strip winding mechanism.

Fig. 18 is a schematic view of the mounting structure of the upper shaft, the lower shaft and the two support plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, and fig. 18, the spiral fin-fin slotting production line includes a steel strip unwinding mechanism 25 for unwinding a flat steel strip roll, a steel strip-to-two slotting machine 31 for rolling and cutting a continuous flat steel strip into two continuous saw-tooth steel strips, and a steel strip winding mechanism 29 for simultaneously winding the two continuous saw-tooth steel strips, the steel strip-to-two slotting machine 31 includes: frame 1, two backup pads 2 that control relative distribution are installed at the top of frame 1, and in this embodiment, the concrete mounting structure of two backup pads 2 includes: the left support plate 2 and the right support plate 2 are connected together through four pull rods 32, a threaded locking hole is formed in the bottom of each support plate 2, a rack top plate 33 corresponding to each support plate is provided with a waist-shaped hole which is in the left-right direction and corresponds to the threaded locking hole, a bottom bolt 34 penetrates through the corresponding waist-shaped hole and the corresponding threaded locking hole, and each support plate 2 is mounted on the rack top plate 33 through the corresponding bottom bolt 34, so that the distance between the two support plates can be conveniently adjusted, and the two support plates are stably connected; a lower shaft 3 driven by a lower shaft transmission mechanism to rotate is supported between the two supporting plates 2, a lower toothed cutter disc 4 is installed at the shaft end of one side of the lower shaft 3, a plurality of lower toothed cutter grooves 41 are uniformly arranged on the outer peripheral surface of the lower toothed cutter disc 4 along the edge of the cutter disc at intervals, a lower toothed cutter head 42 is formed between every two adjacent lower toothed cutter grooves 41, an upper shaft 5 is arranged above the lower shaft 3, the upper shaft 5 is installed on the rack 1 through an upper shaft lifting adjusting mechanism, the lower shaft 3 and the upper shaft 5 synchronously rotate through a gear assembly, an upper toothed cutter head 6 which downwards corresponds to the lower toothed cutter disc 4 is installed at the shaft end of the upper shaft on the same side with the lower toothed cutter disc 4, a plurality of upper toothed cutter grooves 61 which can be just embedded into the lower toothed cutter head 42 of the lower toothed cutter disc 4 are uniformly arranged on the outer peripheral surface of the upper toothed cutter disc 6 along the edge of the cutter disc at intervals, an upper toothed cutter head 62 which can just be embedded into the lower toothed cutter head 41 of the lower toothed cutter disc 4 is formed between every two adjacent upper toothed cutter grooves 61 which can just embed into the lower toothed cutter disc 4 when the upper toothed cutter disc 6 and the upper toothed cutter disc 4 and the lower toothed cutter disc 4 synchronously rotate along the corresponding to form a continuous flat cutter head, and the upper toothed cutter head 4, and the lower toothed cutter belt, and the upper toothed cutter head 4 can continuously roll along the lower toothed cutter disc 4, and the upper toothed cutter disc 4, and the lower toothed cutter disc 4 continuously;

in this embodiment, as shown in fig. 13, 14, 15, and 16, the structure of the steel strip unwinding mechanism 25 includes: the steel strip unreeling mechanism comprises a vertical column 251, a backup plate 252 which is vertically arranged is fixed on one side of the vertical column 251, an unreeling rotating shaft 253 is horizontally and transversely fixed on the vertical column 251, an inner core 254 is movably sleeved on the unreeling rotating shaft 253 after horizontally and transversely penetrating out of the backup plate 252 through the vertical column 251, three first openings 2541 are uniformly arranged on the outer peripheral surface of the inner core 254 along the circumferential direction, an outer core 255 for sleeving a flat steel strip coil is sleeved on the outer part of the inner core 254, three second openings 2551 are uniformly arranged on the outer peripheral surface of the outer core 255 along the circumferential direction, the first openings 2541 of the inner core 254 and the second openings 2551 of the outer core 255 are staggered, a tube seat 256 is arranged on the outer side of the backup plate 252, a material blocking frame 257 capable of being matched with the backup plate 252 to prevent the flat steel strip coil sleeved on the outer core 255 from being separated from the outer core 255 is detachably inserted into the tube seat 256, and the steel strip unreeling mechanism is simple in structure and convenient to use; when the flat steel strip coil is placed, the material blocking frame 257 inserted in the tube seat 256 is pulled out, then the flat steel strip coil is sleeved on the outer core 255, and then the material blocking frame 257 is inserted into the tube seat 256 again; when the flat steel strip coil sleeved on the outer core is dragged to unreel by a subsequent steel strip reeling mechanism, the flat steel strip coil can be unreeled more smoothly due to the special structural design of the inner core 254 and the outer core 255;

in this embodiment, the connection structure of the unwinding rotating shaft 253 and the inner core 254 is specifically: a bearing seat 258 sleeved outside the unreeling rotating shaft 253 is arranged between the unreeling rotating shaft 253 and the inner core 254, the bearing seat 258 and the inner core 254 are fixed through a connecting bolt 259, a bearing is arranged in the bearing seat 258, a bearing outer ring 260 of the bearing is tightly matched with the bearing seat 258 in an interference manner, a bearing inner ring 261 of the bearing is tightly matched with a shaft body of the unreeling rotating shaft 253 in an interference manner, a circle of positioning shoulder 262 against which the bearing inner ring 261 abuts is arranged on the shaft body of the unreeling rotating shaft 253 on one side of the bearing, a positioning washer 263 used for abutting against the bearing inner ring 261 is sleeved on the shaft body of the unreeling rotating shaft 253 on the other side of the bearing, a first locking nut 264 is in threaded connection with the shaft body of the unreeling rotating shaft 253 outside the positioning washer 263, and when the first locking nut 264 is screwed, the positioning washer 263 can be pushed to move towards the direction of the bearing inner ring 261 until the positioning washer 263 abuts against the positioning shoulder 262; in this embodiment, the other side shaft end of the unwinding rotary shaft 253 penetrates through the upright post 251 through the backup plate 252 and then is connected with the second locking nut 265 through a thread, and when the second locking nut 265 is screwed, the unwinding rotary shaft 253 can be locked and fixed on the upright post 251 and the backup plate 252, so that the unwinding rotary shaft 253 can be conveniently disassembled and assembled;

in the present embodiment, as shown in fig. 17, the structure of the steel strip winding mechanism 29 includes: the material receiving frame 291 is internally supported with a winding rotating shaft 293 driven by a winding motor 292 to rotate, the winding motor 292 is controlled by a PLC control system to act, three material blocking rotating discs 294 are sleeved on the winding rotating shaft 293 at intervals, and a material receiving core 295 is sleeved on the winding rotating shaft 293 between every two adjacent material blocking rotating discs 294;

in this embodiment, the specific mounting structure of the upper cutterhead 6 on the upper shaft 5 includes: the end of the upper shaft 5 for mounting the upper gear cutter head 6 is provided with a first conical shaft section 51 and a first external thread shaft section 52 in sequence from inside to outside along the axial direction, the surface of the first conical shaft section 51 is smooth, the caliber of the first external thread shaft section 51 is gradually reduced from inside to outside, the caliber of the first external thread shaft section 52 is consistent with the caliber of the small-caliber end of the first conical shaft section 51, an inner hole 63 for being sleeved on the end of the upper shaft 6 is a conical hole with the caliber matched with the caliber of the first conical shaft section 51 of the upper shaft 5, the upper gear cutter head 6 is tightly sleeved on the first conical shaft section 51 at the end of the upper shaft through the conical hole, and the first external thread shaft section 52 at the end of the upper shaft is in threaded connection with an upper locking nut 7 for locking and fixing the upper gear cutter head 6 sleeved on the first conical shaft section 51 at the end of the upper shaft; the mounting structure of the upper gear cutter head 6 and the upper shaft 5 has the advantages of simple structure, stable connection and convenient assembly and disassembly, and can effectively prevent the upper gear cutter head 6 from axially moving on the upper shaft 5 when in work, thereby improving the use stability of equipment;

the specific mounting structure of the lower-tooth cutter head 4 on the lower shaft 3 comprises: the end of the lower shaft 3 for installing the lower toothed cutter disc 4 is sequentially provided with a second conical shaft section 31 and a second external threaded shaft section 32 from inside to outside along the axial direction, the surface of the second conical shaft section 31 is smooth, the caliber of the second external threaded shaft section 32 is gradually reduced from inside to outside, the caliber of the second external threaded shaft section 32 is consistent with the caliber of the small-caliber end of the second conical shaft section 31, an inner hole 43 which is sleeved on the end of the lower shaft 3 and used for being sleeved on the lower toothed cutter disc 4 is a tapered hole, the caliber of the inner hole is matched with the caliber of the second conical shaft section 31 of the lower shaft 3, the lower toothed cutter disc 4 is tightly sleeved on the second conical shaft section 31 at the end of the lower shaft 3 through the tapered hole, the second external threaded shaft section 32 at the end of the lower shaft 3 is in threaded connection with a lower locking nut 8 which is used for locking and fixing the lower toothed cutter disc 4 sleeved on the second conical shaft section 31 at the end of the lower shaft 3, the installation structure of the lower toothed cutter disc 4 and the lower shaft 3 is simple in structure, stable and convenient to connect and can effectively prevent the lower toothed cutter disc 4 from moving axially when working, thereby improving the stability of the equipment;

in the embodiment, the upper toothed cutter groove 61 and the upper toothed cutter head 62 of the upper toothed cutter head 6 are arranged on the large-diameter side of the inner hole 63 of the upper toothed cutter head, and the outer peripheral surface of the upper toothed cutter head 6 on the small-diameter side of the inner hole 63 is provided with a circle of first limiting retainer ring 64 protruding out of the outer wall of the upper toothed cutter head 6; the lower tooth-shaped cutter groove 41 and the lower tooth-shaped cutter head 42 of the lower tooth cutter head 4 are arranged on the small-caliber side of the inner hole 43 of the lower tooth cutter head, a circle of second limiting retainer ring 44 protruding out of the outer wall of the lower tooth cutter head 4 is arranged on the outer peripheral surface of the lower tooth cutter head 4 on the large-caliber side of the inner hole 43, and the distance between the first limiting retainer ring 64 and the second limiting retainer ring 44 is just enough for a flat steel belt to pass through, so that the running stability of the equipment can be improved;

in this embodiment, the structure of the lower shaft transmission mechanism includes: a power motor 9 arranged at the lower part of the frame 1, wherein the power motor 9 is controlled by a PLC control system to act, an output shaft of the power motor 9 is sleeved with a driving chain wheel 10, the shaft end of the lower shaft 3 is sleeved with a driven chain wheel 11, a transmission chain 12 is wound between the driving chain wheel 10 and the driven chain wheel 11, a tensioning chain wheel 13 which inwards compresses the transmission chain and tensions the transmission chain 12 is arranged between the driving chain wheel 10 and the driven chain wheel 11, the tensioning chain wheel 13 can be freely and rotatably supported at the end part of a displacement adjusting screw rod 14, the displacement adjusting screw rod 14 horizontally and transversely penetrates through a transverse guide hole arranged on the frame 1, and a pair of fastening nuts 15 used for locking and fixing the displacement adjusting screw rod 14 on the frame 1 are in threaded connection on the displacement adjusting screw rod 14;

in this embodiment, the gear assembly is: the lower gear 16 sleeved at the shaft end of the lower shaft 3 and the upper gear 17 sleeved at the shaft end of the upper shaft 5, the upper gear 17 is meshed with the lower gear 16, and the lower shaft 3 and the upper shaft 5 realize synchronous rotation through the upper gear 17 and the lower gear 16;

in this embodiment, the upper shaft 5 is mounted on the frame 1 through an upper shaft lifting adjusting mechanism, and the upper shaft lifting adjusting mechanism includes: the supporting plates 2 on the left side and the right side of the rack 1 are respectively provided with a vertical guide groove 18, a bearing seat 19 is arranged in the vertical guide groove 18 of each supporting plate 2 in a sliding manner, two shaft ends on the two sides of the upper shaft 5 are supported in the two bearing seats 19 through bearings 20, a screw rod seat 21 is fixed at the top of each bearing seat 19, a vertical screw rod 22 is fixed on each screw rod seat 21, a fixed cross beam 23 is installed on the rack 1 above each bearing seat 19, each fixed cross beam 23 is provided with a through hole which vertically penetrates through the fixed cross beam 23 and downwards corresponds to the vertical screw rod 22 on the same side, and the vertical screw rod 22 on each screw rod seat 21 upwards penetrates out of the corresponding fixed cross beam 23 from the corresponding through hole and is in threaded connection with a limit nut 24; when the upper shaft needs to move upwards relative to the lower shaft, the limiting nuts 24 on the vertical screw rods 22 on the two sides are rotated simultaneously, the two vertical screw rods 22 are driven to move upwards synchronously, and therefore the upper shaft 5 is driven to move upwards relative to the lower shaft 3; when the upper shaft 5 needs to move downwards relative to the lower shaft 3, the two vertical screw rods 22 are synchronously driven to move downwards only by reversely rotating the limiting nuts 24 on the vertical screw rods 22 on the two sides at the same time, so that the upper shaft 5 is driven to move downwards relative to the lower shaft 3; when the device is used, the distance between the upper toothed cutter disc 6 and the lower toothed cutter disc 4 can be synchronously adjusted by adjusting the height of the upper shaft 5 relative to the lower shaft 3, so that the lower toothed cutter disc 6 and the lower toothed cutter disc 4 can be adapted to cut flat steel strips with different thicknesses, and the application range of the device is expanded;

in the present embodiment, the steel strip pressing assembly 26 and the feed guide wheel assembly 27 are provided in this order along the steel strip conveying direction on the input side of the steel strip one-in-two tooth separator 31, and the guide pressing assembly 35 and the discharge guide wheel assembly 28 are provided in this order along the steel strip conveying direction on the output side of the steel strip one-in-two tooth separator 31.

In the present embodiment, the structure of the clamping band assembly 30 includes: the pressing rod 301 is hinged to the rack 1 on the input side between the upper toothed cutter disc 6 and the lower toothed cutter disc 4 through a pin shaft 302, the pressing wheel 304 is hinged to the other end of the pressing rod 301 through a rotating shaft 303, and when the pressing rod 301 is used, the pressing wheel 264 presses the flat steel belt downwards under the self weight of the pressing rod 261 and the self weight of the pressing rod, so that the flat steel belt is prevented from jumping up and down before being input into the upper toothed cutter disc 6 and the lower toothed cutter disc 4, the flat steel belt can be stably input between the upper toothed cutter disc 6 and the lower toothed cutter disc 4, and the product quality is guaranteed;

in this embodiment, the structure of the pressure guide assembly 35 includes: the two pressure plates 36 are arranged on the output side between the upper toothed cutter disc 6 and the lower toothed cutter disc 4, each pressure plate 36 is arranged on the support plate 2 on the corresponding side of the frame 1 through an adjusting bolt 37, the two pressure plates 36 are respectively arranged on the upper side and the lower side of an output steel belt cut by the upper toothed cutter disc 6 and the lower toothed cutter disc 4, the two pressure plates are arranged, two zigzag steel belts output by the upper toothed cutter disc 6 and the lower toothed cutter disc 4 can be effectively prevented from rotating along with the cutter disc, the phenomenon that the cutter disc is clamped by the zigzag steel belts which tilt along with the rotation of the cutter disc is avoided, and the use stability of the equipment is improved;

in the present embodiment, the specific mounting structure of the upper shaft 5 includes: the upper parts of the two supporting plates 2 are oppositely provided with two upper mounting holes, an upper bearing seat is mounted in each upper mounting hole, upper bearings are mounted at two side shaft ends of the upper shaft respectively, the upper shaft 5 is supported in the two upper bearing seats of the two supporting plates 2 through the two upper bearings, a first upper shaft anti-moving assembly 38 and a second upper shaft anti-moving assembly 39 for preventing the upper shaft from moving left and right are mounted on a shaft body of the upper shaft 5 between the two supporting plates 2, the first upper shaft anti-moving assembly 38 is close to the inner side wall of the left supporting plate 2, the second upper shaft anti-moving assembly 39 is close to the inner side wall of the right supporting plate 2, the first upper shaft anti-moving assembly 39 consists of a first shaft sleeve 381, a first flexible gasket 382 and a first steel locking gasket 383 which are sequentially sleeved on the upper shaft 5 from left to right, and the second upper shaft sleeve, a second flexible gasket 392 and a second steel locking gasket 393 are sequentially sleeved on the upper shaft 391 from right to left; the specific mounting structure of the lower shaft 3 includes: two lower mounting holes are oppositely arranged at the lower parts of the two supporting plates 2, a lower bearing seat is arranged in each lower mounting hole, lower bearings are respectively arranged at the shaft ends of two sides of the lower shaft 3, the lower shaft 3 is supported in the two lower upper bearing seats of the two supporting plates 2 through the two lower bearings, a third lower shaft anti-moving assembly 40 and a fourth lower shaft anti-moving assembly 41 for preventing the lower shaft from moving left and right are arranged on the shaft body of the lower shaft 3 between the two supporting plates 2, the third lower shaft anti-moving assembly 40 is close to the inner side wall of the left supporting plate 2, the fourth lower shaft anti-moving assembly 41 is close to the inner side wall of the right supporting plate, the third lower shaft anti-moving assembly 40 is composed of a third shaft sleeve 401, a third flexible gasket 402 and a third rigid locking gasket 403 which are sequentially sleeved on the lower shaft 3 from left to right, and the fourth lower shaft anti-moving assembly 41 is composed of a fourth shaft sleeve 411, a fourth flexible gasket 412 and a fourth rigid locking gasket 413 which are sequentially sleeved on the lower shaft from left to right;

the working principle of the invention is as follows:

preparation work: firstly, pulling out a material blocking frame 257 inserted in a tube seat 256, then sleeving a flat steel strip coil to be subjected to tooth punching on an outer core 255, then inserting the material blocking frame 257 into the tube seat 256 again, then manually or mechanically pulling one end of the flat steel strip coil to a steel strip one-two tooth punching machine 31 through a steel strip pressing assembly 26 and a feeding guide wheel assembly 27, then starting a power motor 9 of the steel strip one-two tooth punching machine 31, wherein the power motor 9 drives a lower shaft 3 to rotate through a driving chain wheel 10, a transmission chain 12 and a driven chain wheel 11, the lower shaft 3 synchronously drives a lower tooth cutter head 4 to rotate when rotating, the lower shaft 3 simultaneously drives an upper gear 17 to synchronously rotate through a lower gear 16, the upper gear 17 synchronously drives an upper shaft 5 to rotate when rotating, the upper gear cutter head 6 is synchronously driven to rotate when rotating the upper shaft 5, the lower shaft 3 synchronously, the upper gear cutter head 6 and the lower tooth cutter head 4 are driven to synchronously rotate when rotating synchronously with the upper shaft 5 and the lower shaft 3, the upper gear cutter head 6 and the lower gear head 4 continuously rotate continuously, and the upper tooth cutter head 62 and the lower tooth cutter head 4 of the upper tooth cutter head 4 are embedded between the lower tooth cutter head of the continuous steel strip to roll simultaneously; when the lengths of the two sawtooth-shaped steel belts are enough to be drawn to the steel belt winding mechanism 29 by a worker, stopping the action of the power motor 9 to stop the action of the upper tooth cutter head 6 and the lower tooth cutter head 4, and then respectively drawing and winding the two sawtooth-shaped steel belts on the two material collecting cores 295 of the steel belt winding mechanism 29 by the worker or a manipulator through the material discharging guide wheel component 28 of the pressing guide component;

high-speed tooth punching: the PLC control system controls and starts a winding motor 292 of the steel strip winding mechanism 29 and simultaneously controls and starts a power motor 9 of the steel strip one-to-two tooth punching machine 31; the power motor 9 drives the lower shaft 3 to rotate through the driving sprocket 10, the transmission chain 12 and the driven sprocket 11, the lower shaft 3 synchronously drives the lower toothed cutter head 4 to rotate when rotating, the lower shaft 3 simultaneously drives the upper gear 17 to synchronously rotate through the lower gear 16, the upper gear 17 synchronously drives the upper shaft 5 to rotate when rotating, the upper shaft 5 synchronously drives the upper toothed cutter head 6 to rotate when rotating, so that the upper shaft 5 and the lower shaft 3 synchronously rotate, the upper toothed cutter head 6 and the lower toothed cutter head 4 are synchronously driven to rotate when the upper shaft 5 and the lower shaft 3 synchronously rotate, the upper toothed cutter head 62 of the upper toothed cutter head 6 continuously rotates to be embedded into the lower toothed cutter groove 41 of the lower toothed cutter head 4, and the lower toothed cutter head 42 of the lower toothed cutter head 4 continuously rotates to be embedded into the upper toothed cutter groove 61 of the upper toothed cutter head 6 when the upper toothed cutter head 6 and the lower toothed cutter head 4 synchronously rotate with the corresponding upper shaft 5 and the lower shaft 3, so that a continuous flat steel belt passing between the upper toothed cutter head 6 and the lower toothed cutter head 4 continuously rolls into two continuous saw-tooth steel belts; meanwhile, the winding motor 292 drives the winding spindle 293 to synchronously drive the two receiving cores 295 to rotate, so that the two receiving cores 295 continuously wind the two continuous saw-tooth-shaped steel strips output by the steel strip one-to-two tooth punching machine 31.

The invention has the advantages that: (1) When the teeth are formed, the flat steel belt is cut into two sawtooth-shaped steel belts in a rolling manner through the upper gear cutter head and the lower gear cutter head, and the two sawtooth-shaped steel belts can be just spliced into a complete flat steel belt when being butted, namely: waste materials cannot be generated in the process of tooth punching, so that material waste cannot be caused, and the cost of enterprises is reduced; (2) The steel belt winding mechanism and the steel belt one-in-two tooth punching machine synchronously act, the steel belt one-in-two tooth punching machine simultaneously cuts and the steel belt winding mechanism simultaneously winds, the whole tooth punching and winding process is continuous and uninterrupted, and the working efficiency is greatly improved; (3) A servo material pulling mechanism of the original tooth punching equipment is omitted, the equipment is simplified, and the structure is simpler; (4) The steel belt unwinding mechanism can unwind more smoothly, and the work efficiency is improved; (5) The production line adopts intelligent override, so that the working strength of workers is greatly reduced, and the labor cost is reduced; and (6) the tooth-shaped cutter head can be designed and replaced according to the requirement.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made in accordance with the technical spirit of the present invention are within the scope of the present invention as claimed.

Claims (10)

1. The utility model provides a spiral finned tube fin gulleting production line which characterized in that: including the steel band unwinding mechanism who is used for unreeling a flat steel band roll of arranging in proper order along steel band direction of delivery, be used for rolling the steel band that cuts into two continuous sawtooth shape steel bands with a continuous flat steel band and divide two gullets and be used for rolling the steel band winding mechanism of two continuous sawtooth shape steel bands simultaneously, the structure of steel band one minute two gullets includes: the steel strip cutting machine comprises a rack, two support plates which are oppositely distributed left and right are installed at the top of the rack, a lower shaft driven to rotate by a lower shaft transmission mechanism is supported between the two support plates, a lower toothed cutter head is installed at one side shaft end of the lower shaft, a plurality of lower toothed cutter grooves are evenly arranged on the outer peripheral surface of the lower toothed cutter head at intervals along the edge of the cutter head, a lower toothed cutter head is formed between every two adjacent lower toothed cutter grooves, an upper shaft is arranged on the rack above the lower shaft, the lower shaft and the upper shaft rotate synchronously through a gear assembly, an upper toothed cutter head which corresponds to the lower toothed cutter head downwards is installed at the upper shaft end of the same side with the lower toothed cutter head, a plurality of upper toothed cutter grooves which can be just embedded into the lower toothed cutter head of the lower toothed cutter head are evenly arranged at intervals along the edge of the cutter head, an upper toothed cutter head which can just be just embedded into the lower toothed cutter head of the lower toothed cutter head is formed between every two adjacent upper toothed cutter grooves, and an upper toothed cutter head and a lower toothed cutter head which just embedded into the lower toothed cutter head of the lower toothed cutter head roll between the upper toothed cutter head and the upper toothed cutter head, so that a continuous steel strip which continuously rolls.

2. A helical finned tube fin facing line according to claim 1 wherein: the structure of steel band unwinding mechanism includes: the stand, be fixed with the backup plate of vertical placing in one side of stand, the level transversely is fixed with one at the stand and unreels the pivot, it has the inner core to unreel the pivot and transversely wears out the movable sleeve after the backup plate through the stand level, evenly be provided with three first opening along circumference at the outer peripheral face of inner core, the outer core that supplies flat coil of strip to embolia is equipped with in the outside cover of inner core, evenly be provided with three second opening along circumference at the outer peripheral face of outer core, the first opening of inner core and the second opening looks staggered arrangement of outer core, the tube socket is arranged in the outside of backup plate, detachably inserts the fender work or material rest that can cooperate and prevent the flat coil of strip book of cover on outer core to break away from outer core with the backup plate on the tube socket.

3. A helical finned tube fin facing line according to claim 2 wherein: the connection structure of the unreeling rotating shaft and the inner core specifically comprises: the bearing seat is arranged between the unreeling rotating shaft and the inner core and sleeved outside the unreeling rotating shaft, the bearing seat and the inner core are fixed through a connecting bolt, a bearing is arranged in the bearing seat, a bearing outer ring of the bearing is in interference tight fit with the bearing seat, a bearing inner ring of the bearing is in interference tight fit with a shaft body of the unreeling rotating shaft, a circle of positioning convex shoulder for the bearing inner ring to abut against is arranged on the unreeling rotating shaft body on one side of the bearing, a positioning washer for abutting against the bearing inner ring is sleeved on the unreeling rotating shaft body on the other side of the bearing, a first locking nut is in threaded connection with the unreeling rotating shaft body on the outer side of the positioning washer, and the first locking nut can push the positioning washer to move towards the bearing inner ring when screwed until the positioning washer abuts against the bearing inner ring on the positioning convex shoulder.

4. A turn fin notching line for a turn fin tube according to claim 1, wherein: the structure of the steel belt winding mechanism comprises: the winding motor is controlled by a PLC control system to act, three material blocking turntables are sleeved on the winding rotating shaft at intervals, and a material collecting core is sleeved on the winding rotating shaft between every two adjacent material blocking turntables.

5. A helical finned tube fin facing line according to claim 1 wherein:

the concrete mounting structure of the upper gear cutter head on the upper shaft comprises: the upper shaft end used for installing the upper gear cutter head is sequentially provided with a first conical shaft section and a first external thread shaft section from inside to outside along the axial direction, the surface of the first conical shaft section is smooth, the caliber of the first external thread shaft section is gradually reduced from inside to outside, the caliber of the first external thread shaft section is consistent with the caliber of the small-caliber end of the first conical shaft section, an inner hole used for being sleeved on the upper shaft end on the upper gear cutter head is a conical hole with the caliber matched with the caliber of the first conical shaft section of the upper shaft, the upper gear cutter head is tightly sleeved on the first conical shaft section of the upper shaft end through the conical hole, and the first external thread shaft section of the upper shaft end is in threaded connection with an upper locking nut used for locking and fixing the upper gear cutter head sleeved on the first conical shaft end on the upper shaft end;

the specific mounting structure of lower tooth cutter head at the lower shaft includes: the lower shaft end for installing the lower gear cutter head is sequentially provided with a second conical shaft section and a second external threaded shaft section from inside to outside along the axial direction, the surface of the second conical shaft section is smooth, the caliber of the second external threaded shaft section is gradually reduced from inside to outside, the caliber of the second external threaded shaft section is consistent with the caliber of the small-caliber end of the second conical shaft section, the lower gear cutter head is provided with a conical hole matched with the caliber of the second conical shaft section of the lower shaft by a hole in a sleeved mode, the lower gear cutter head is tightly sleeved on the second conical shaft section of the lower shaft end through the conical hole, and the second external threaded shaft section at the lower shaft end is in threaded connection with a lower locking nut used for locking and fixing the lower gear cutter head sleeved on the second conical shaft end at the lower shaft end.

6. A helical finned tube fin facing line according to claim 5 wherein: the upper toothed cutter groove and the upper toothed cutter head of the upper toothed cutter disc are arranged on the large-caliber side of the inner hole of the upper toothed cutter disc, and the outer peripheral surface of the upper toothed cutter disc on the small-caliber side of the inner hole is provided with a circle of first limiting check ring protruding out of the outer wall of the upper toothed cutter disc; the lower toothed cutter groove and the lower toothed cutter head of the lower toothed cutter disc are arranged on the small-caliber side of the inner hole of the lower toothed cutter disc, the outer peripheral surface of the lower toothed cutter disc on the large-caliber side of the inner hole is provided with a circle of second limiting check ring protruding out of the outer wall of the lower toothed cutter disc, and the distance between the first limiting check ring and the second limiting check ring can be just used for a flat steel belt to pass through.

7. A helical finned tube fin facing line according to claim 1 wherein: the structure of the lower shaft transmission mechanism comprises: the power motor is arranged at the lower part of the rack and controlled by a PLC control system to act, a driving chain wheel is sleeved on an output shaft of the power motor, a driven chain wheel is sleeved at the shaft end of the lower shaft, a transmission chain is wound between the driving chain wheel and the driven chain wheel, a tensioning chain wheel which inwards compresses the transmission chain and tensions the transmission chain is arranged between the driving chain wheel and the driven chain wheel and can be freely and rotatably supported at the end part of the displacement adjusting screw rod, the displacement adjusting screw rod horizontally and transversely penetrates through a transverse guide hole arranged on the rack, and a pair of fastening nuts which are used for locking and fixing the displacement adjusting screw rod on the rack are in threaded connection on the displacement adjusting screw rod.

8. A turn fin notching line for a turn fin tube according to claim 1, wherein: the upper shaft is installed on the frame through upper shaft lift adjustment mechanism, and upper shaft lift adjustment mechanism's structure includes: the vertical guide grooves are respectively arranged on the supporting plates on the left side and the right side of the rack, a bearing seat is arranged in the vertical guide groove of each supporting plate in a sliding mode, shaft ends on the two sides of the upper shaft are supported in the two bearing seats through bearings, a screw rod seat is fixed at the top of each bearing seat, a vertical screw rod is fixed on each screw rod seat, a fixed cross beam is installed on the rack above each bearing seat, a through hole which penetrates through the fixed cross beam from top to bottom and corresponds to the vertical screw rod on the same side downwards is arranged in each fixed cross beam, and the vertical screw rod on each screw rod seat penetrates out of the corresponding fixed cross beam upwards from the corresponding through hole and is connected with a limit nut in a threaded mode.

9. A turn fin notching line for a turn fin tube according to claim 1, wherein: the steel belt one-in-two tooth punching machine is characterized in that a steel belt pressing component and a feeding guide wheel component are sequentially arranged on the input side of the steel belt one-in-two tooth punching machine along the steel belt conveying direction, and a steel belt pressing component and a discharging guide wheel component are sequentially arranged on the output side of the steel belt one-in-two tooth punching machine along the steel belt conveying direction.

10. A helical finned tube fin facing line according to claim 9 wherein: the structure of pressure is led the subassembly and is included: and the two pressure plates are respectively positioned at the upper side and the lower side of the output steel belt cut by the upper tooth cutter disc and the lower tooth cutter disc.

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