CN114309328A - Production method of heat exchange coil pipe made of heat-conducting section bar with special-shaped fins - Google Patents
Production method of heat exchange coil pipe made of heat-conducting section bar with special-shaped fins Download PDFInfo
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- CN114309328A CN114309328A CN202111671543.2A CN202111671543A CN114309328A CN 114309328 A CN114309328 A CN 114309328A CN 202111671543 A CN202111671543 A CN 202111671543A CN 114309328 A CN114309328 A CN 114309328A
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Abstract
The invention relates to a method for producing a heat exchange coil pipe of a heat conduction section bar with special-shaped fins, which comprises the following steps of firstly, adopting a mould to extrude and form a long section bar which is matched with the section shape of a fin group, and producing a long sleeve pipe which is consistent with the caliber of a main body of the heat exchange coil pipe; step two, carrying out forming operation on the full-length section; thirdly, twisting the full-length section into a heat-conducting section with special-shaped fins, and internally installing the heat-conducting section in the full-length sleeve to form a straight pipe section; and step four, connecting the straight pipe section and the bent pipe section to form the heat exchange coil pipe with the heat-conducting section with the special-shaped fins. The fluid in the product produced by the production method of the heat exchange coil pipe made of the heat-conducting section with the special-shaped fins can be conducted to the heat exchange coil pipe main body through the heat-conducting section with excellent heat conduction in the pipe, so that the heat exchange amount and the heat exchange speed are greatly increased.
Description
Technical Field
The invention relates to a production method of a heat exchange coil pipe made of a heat-conducting section with special-shaped fins.
Background
Heat exchange coils are widely used for heat exchange of various fluids. The fluid flows in the pipe, especially some viscous liquid, which can generate a layer of mucous membrane on the inner pipe wall to block the heat conduction of the heat of the fluid to the heat exchange coil, thereby greatly reducing the heat exchange of the fluid to the heat exchange coil.
Disclosure of Invention
The invention aims to overcome the defects and provides a production method of a heat exchange coil pipe made of a heat-conducting section with special-shaped fins.
The purpose of the invention is realized as follows:
the production method of the heat exchange coil pipe with the heat-conducting section bar with the special-shaped fins comprises the following steps:
firstly, adopting a die to extrude and form a through long section with the cross section shapes matched with those of the fin groups, and additionally producing a through long sleeve with the caliber consistent with that of a main body of the heat exchange coil;
step two, carrying out forming operation on the full-length section;
thirdly, twisting the full-length section into a heat-conducting section with special-shaped fins, and internally installing the heat-conducting section in the full-length sleeve to form a straight pipe section;
and step four, connecting the straight pipe section and the bent pipe section to form the heat exchange coil pipe with the heat-conducting section with the special-shaped fins.
Preferably, the second step is performed by using a forming device,
the forming device comprises a rolling wheel set, the rolling wheel set comprises a rolling male die set and a rolling female die set which are arranged up and down, a rolling gap is reserved between the rolling male die set and the rolling female die set which are arranged up and down, the rolling gap is matched with the thickness of a main fin, the rolling male die set comprises a front rolling male die and a rear rolling male die which are synchronously connected through a connecting wheel shaft, the rolling female die set comprises a front rolling female die and a rear rolling female die which are synchronously connected through the connecting wheel shaft, fin gaps are reserved between the two rolling male dies and between the rolling female dies and are matched with the thickness of the main fin, the rolling male dies and the rolling female dies are longitudinally arranged in a cylindrical structure, bulges matched with the size of a special-shaped structure are arranged on the rolling male dies at intervals along the circumferential direction, and pits matched with the size of the special-shaped structure are arranged on the rolling female dies at intervals along the circumferential direction, and the protruding concave position of the convex mould of roll-in corresponds with the concave position of the concave mould of roll-in, the left and the right side of the convex mould group of roll-in and the concave mould group of roll-in are provided with first section bar locating wheel group and second section bar locating wheel group respectively, and first section bar locating wheel group and second section bar locating wheel group have the same structure.
Preferably, the rolling male die and the rolling female die are connected by a first synchronous belt on the front side, and the rolling male die or the rolling female die is connected with an output end of a motor by a second synchronous belt.
Preferably, the first profile positioning wheel set comprises an upper first profile positioning wheel set and a lower first profile positioning wheel set, the upper first profile positioning wheel set comprises a front upper positioning wheel set and a rear upper positioning wheel set which are synchronously connected through a connecting wheel shaft, the lower first profile positioning wheel set comprises a front lower positioning wheel set and a rear lower positioning wheel set which are synchronously connected through a connecting wheel shaft, the lower second profile positioning wheel set comprises an upper second profile positioning wheel set and a lower second profile positioning wheel set, the upper second profile positioning wheel set comprises a front upper positioning wheel set and a rear upper positioning wheel set which are synchronously connected through a connecting wheel shaft, the lower second profile positioning wheel set comprises a front lower positioning wheel set and a rear lower second profile positioning wheel set which are synchronously connected through a connecting wheel shaft, the first profile positioning wheel set and the second profile positioning wheel set have approximately the same gap with the roller wheel set, and the difference lies in that the surfaces of the positioning wheels of the upper second profile positioning wheel set and the lower first profile positioning wheel set are smooth surfaces.
Preferably, the molding device comprises the following steps:
lead to long section bar and move towards the other end from forming device's one end, vertical main fin is located the fin clearance, horizontal main fin is located between locating wheel and the lower locating wheel, when leading to long section bar through the roll-in wheelset, horizontal main fin is rolled in the roll-in clearance by the roll-in wheelset and is become the dysmorphism structure, half one becomes the dysmorphism structure cycle is accomplished to the above-mentioned step, then lead to long section bar rotation ninety degrees, walk once again in following leading to long section bar, accomplish the one-tenth dysmorphism structure of two other main fins, the one-tenth dysmorphism structure of four main fins on the last section bar of accomplishing of leading to long finally.
9. The heat exchange coil of heat conducting profile with shaped fins as claimed in claim 4, wherein step three is performed by using a torsion jacking device,
the torsion jacking device comprises a push rod which is transversely arranged leftwards, the push rod is arranged in a push rod sliding groove which is transversely arranged, a push rod gear rack which is arranged along the length direction of the push rod is arranged at the top of the push rod, a push rod motor is arranged above the push rod, a push rod motor gear is arranged at the output end of the push rod motor, and the push rod motor gear is matched with the push rod gear rack;
the section outer sleeve is transversely arranged at the left side of the push rod and comprises a section outer sleeve base, a section outer sleeve bottom semicircular tube is fixedly arranged on the section outer sleeve base, an openable section outer sleeve top semicircular tube is arranged on the section outer sleeve bottom semicircular tube, and the section outer sleeve bottom semicircular tube is fixedly connected with the section outer sleeve top semicircular tube through a semicircular tube fixing pin;
a section bar cover die is arranged on the left side of the section bar outer sleeve, an electromagnetic brake is arranged outside the section bar cover die and can be used for limiting the rotation of the section bar cover die, the section bar cover die comprises an annular section bar cover die sleeve and an internal section bar cover die core, a die core cavity is arranged in the section bar cover die core and is used for allowing heat-conducting section bars to transversely pass through, and the shape of the die core cavity is matched with the solid shape formed by compounding the first fin group and the second fin group;
a cutting gap is reserved between the section sleeve die and the section outer sleeve, a cutting motor sheet is arranged in the cutting gap, the cutting motor sheet is fixed on the output end of a cutting motor, and the cutting motor is arranged on a height lifting device;
a profile gear sleeve die is arranged on the left side of the profile sleeve die, a torsional gap is formed between the profile sleeve die and the profile gear sleeve die, the profile gear sleeve die comprises an annular profile gear sleeve die sleeve and an internal profile gear sleeve die core, a circle of external gear is arranged outside the profile gear sleeve die sleeve, the profile gear sleeve die core has the same die core cavity as the profile sleeve die core, the straightness of a channel of the die core cavity is consistent, a rotary motor is arranged below the profile gear sleeve die, the output end of the rotary motor is connected with a rotary driving gear through a transmission, and the rotary driving gear is meshed with the external gear; the rotary motor acts to drive the gear sleeve die of the section bar to rotate;
the sleeve rotating seat is arranged on the left side of the section bar sleeve die and comprises a fixed support, a sleeve rotating fixed support is arranged on the right side of the fixed support, a sleeve rotating movable clamping die is connected to the sleeve rotating fixed support through a bearing, a bayonet matched with the inner diameter of the through long sleeve is arranged at the right end of the sleeve rotating movable clamping die, and the distance between the sleeve rotating movable clamping die and the section bar sleeve die is equal to the length of the through long sleeve to be installed;
preferably, the specific working steps of the torsion jacking device are as follows:
step one, feeding
Opening a semicircular pipe at the top of the profile outer sleeve, putting the through-length profile, closing the semicircular pipe at the top of the profile outer sleeve, locking a semicircular pipe fixing pin, placing a through-length sleeve on a sleeve rotating seat, fixing the left end of the through-length sleeve on a sleeve rotating movable clamping die, and enabling the right end of the through-length sleeve to be close to the left side of a profile gear sleeve die;
step two, first jacking
Starting a push rod motor, moving a push rod leftwards along a push rod sliding groove to push a through long section bar in a section bar outer sleeve to enter a section bar sleeve die and a section bar gear sleeve die, enabling the solid part of the through long section bar to penetrate through a die core cavity in a section bar sleeve die core and a die core cavity in a section bar gear sleeve die core, and enabling the push rod motor to push the length of the through long section bar, which is positioned in a cutting gap, to be equal to the set process length or the length of a fin group;
step three, cutting
The push rod motor stops acting, the cutting motor is started to cut the main fins and the auxiliary fins of the full-length section, the cutting motor descends, the rotary motor is started simultaneously to enable the section gear sleeve die to rotate for a circle, the electromagnetic brake releases the section gear sleeve die at the moment, the section gear sleeve die also rotates for a circle along with the section gear sleeve die, the full-length section is cut for a circle until only the mandrel is left to be uncut, and a fin group gap is formed at the cut part;
step four, second jacking and extending
After cutting, the push rod motor continues to act, the push rod continues to push the full-length section leftwards until a fin group gap formed on the full-length section in the previous step is positioned at a torsion gap between the section sleeve die and the section gear sleeve die;
step five, twisting
The push rod motor stops acting, the electromagnetic brake embraces the section bar sleeve die and limits the rotation of the section bar sleeve die, the rotary motor is started to enable the section bar gear sleeve die to rotate for forty-five degrees, the full-length section bar forms torsion at the gap of the fin group of the full-length section bar, and the fin group at the left side of the gap of the fin group and the full-length section bar at the right side of the gap of the fin group are axially staggered for forty-five degrees;
and repeating the second step to the fifth step, completing the cutting of the gaps of the multiple sections of fin groups and the twisting between the adjacent fin groups, enabling the cut and twisted section which is pushed to the left side of the section gear sleeve die to enter the through-length sleeve until the whole through-length section is cut and twisted and enters the through-length sleeve, and performing spot welding on the heat-conducting section of the special-shaped fin and the through-length sleeve after blanking to form a straight pipe section.
Compared with the prior art, the invention has the beneficial effects that:
1. a heat-conducting section in a straight pipe section is provided with main fins, and the main fins are provided with special-shaped structures, so that the special-shaped structures not only increase the heat exchange area of fluid in the pipe, but also enable the fluid to generate turbulence when the fluid passes through wave lines, turned edges or penetrating holes of the special-shaped structures in a flowing state, and thus, a liquid mucous membrane blocking heat conduction in the inner pipe wall can be continuously broken.
2. A first fin group and a second fin group are arranged on a core rod in a straight pipe section in a staggered mode along the length direction of the core rod, so that fluid flowing from the front can be continuously divided, heat conduction of the fluid is more sufficient and uniform, the flow direction of the liquid in the pipe can be changed, and the mucous membrane of the inner pipe wall obstructing heat conduction can be better broken.
Drawings
Fig. 1 is a schematic view of a heat exchange coil having a shaped fin heat conductive profile.
Fig. 2 is a perspective partial sectional view of a straight pipe section of embodiment 1.
FIG. 3 is a cross-sectional view of a straight tube section of example 1.
Fig. 4 is a schematic view of the heat-conducting profile of the deformed fin of example 1.
Fig. 5 is a schematic view of a heat-conducting section bar without a profiled structure.
Figure 6 is a perspective partial sectional view of a straight tube section of example 2.
FIG. 7 is a cross-sectional view of a straight tube section of example 2.
Fig. 8 is a schematic view of the heat-conducting profile of the deformed fin of example 2.
Fig. 9 is a front view of the molding apparatus.
Fig. 10 is a schematic view of a rolling male mold and a rolling female mold in examples 1 and 2.
FIG. 11 is a top view of the molding apparatus.
FIG. 12 is a schematic view of a twist and push device.
Fig. 13 is a schematic view of the corresponding profile die set in examples 1 and 2.
Fig. 14 is a schematic view of the gear sleeve die of the corresponding section bar in the embodiments 1 and 2.
Fig. 15 is a schematic view of a cannula mount.
Fig. 16 is a schematic view of a heat-conducting profile of the shaped fin of example 3.
Fig. 17 is a schematic view of a heat-conducting profile of the shaped fin of example 4.
FIG. 18 is a front view of a second molding apparatus.
FIG. 19 is a top view of a second molding apparatus.
Fig. 20 is a schematic view of a rolling male mold and a rolling female mold corresponding to example 3.
Fig. 21 is a schematic view of a rolling male mold and a rolling female mold corresponding to example 4.
Fig. 22 is a schematic view of a corresponding profile die set in example 3.
Fig. 23 is a schematic view of a gear sleeve die of a corresponding profile in embodiment 3.
Fig. 24 is a schematic view of a corresponding profile die set in example 4.
Fig. 25 is a schematic view of a gear sleeve die of a corresponding profile in embodiment 4.
FIG. 26 is a schematic view of a formed twist top drive.
Wherein:
the heat exchange coil 8 with the heat conduction section bar of the special-shaped fin, a heat exchange coil body 800, a straight pipe section 800.1, a bent pipe section 800.2, a heat conduction section bar 801, a core rod 801.1, a main fin 801.2 and a hole 801.3
The forming device 500, the rolling male die 501, the rolling female die 502, the first synchronous belt 503, the motor 504, the second synchronous belt 505, the first profile positioning wheel set 506, the second profile positioning wheel set 507, the third synchronous belt 508 and the fourth synchronous belt 509
The device comprises a torsion jacking device 900, a push rod 901, a push rod gear strip 901.1, a push rod sliding groove 901.2, an electromagnetic brake 902, a push rod motor 903, a push rod motor gear 903.1, a profile outer sleeve 904, a profile outer sleeve base 904.1, a profile outer sleeve bottom semi-circular tube 904.2, a profile outer sleeve top semi-circular tube 904.3, a semi-circular tube fixing pin 904.4, a profile sleeve die 905, a profile sleeve die sleeve 905.1, a profile sleeve die core 905.2, a cutting motor 906, a cutting motor sheet 906.1, a height lifting device 906.2, a profile gear sleeve die 907, a profile gear sleeve die sleeve 907.1, a profile gear sleeve die core 907.2, an external gear 907.3, a rotating motor 907.4, a speed changer 907.5, a rotating driving gear 907.6, a sleeve rotating seat 908, a fixed support 908.1, a sleeve rotating fixed support 908.2, a bearing 908.3, a sleeve rotating movable clamping die 908.4, a full-length sleeve 909 and a full-length profile 910.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the drawings of the figure, the heat exchange coil 8 with the heat-conducting section having the special-shaped fins comprises a heat exchange coil main body 800, wherein the heat exchange coil main body 800 comprises a straight pipe section 800.1 and a bent pipe section 800.2, the heat-conducting section 801 having the special-shaped fins is arranged in the straight pipe section of the heat exchange coil main body 800, the heat-conducting section 801 having the special-shaped fins comprises a round core rod 801.1 arranged along the heat exchange coil main body 800, main fins 801.2 are arranged outside the core rod 801.1, special-shaped structures 801.3 are arranged on the main fins 801.2, and the special-shaped structures 801.3 can be wave lines, turned-ups or a plurality of holes communicated with each other in the thickness direction.
Preferably, the mandrel 801.1 is provided with a first fin group and a second fin group which are staggered along the length direction of the mandrel 801.1, the lengths of the first fin group and the second fin group are equal, a fin group gap is formed between the first fin group and the second fin group, a forty-five degree offset angle is formed between the first fin group and the second fin group, and the first fin group and the second fin group have the same structure except for being axially offset by forty-five degrees along the mandrel 801.1. The first fin group and the second fin group are collectively called fin group, the fin group comprises main fins 801.2 which are uniformly distributed along the center of a mandrel 801.1, and the outer ends of the main fins 801.2 are in contact with the inner wall of the heat exchange coil main body 800.
The number of the main fins 801.2 of the fin groups on the heat-conducting section 801 of the special-shaped fin in the embodiment 1 and fig. 2-5 is four, the main fins 801.2 penetrate through the whole length of the mandrel 801.1, the first fin group and the second fin group which are staggered do not exist, and the special-shaped structure is a hole;
the number of the main fins 801.2 of the fin groups on the heat-conducting section 801 of the profiled fin in the embodiment 2 and fig. 6-8 is four, a forty-five-degree offset angle is formed between the first fin group and the second fin group, the profiled structure is holes, and three holes are arranged on the main fins 801.2 of each fin group.
The special-shaped structures on the fin groups in the embodiment 3 and the figure 16 are wave lines.
The fin group in the embodiment 4 and the figure 17 has a special-shaped structure which is a flanging.
The production method of the heat exchange coil pipe with the heat conduction section bar with the special-shaped fins comprises the following steps:
firstly, a mould is adopted to extrude and form a through long section 910 matched with the section shape of the fin group, and a through long sleeve 909 consistent with the caliber of a main body of the heat exchange coil is produced;
step two, carrying out special-shaped structure forming operation on the full-length section;
thirdly, twisting the full-length section into a heat-conducting section with special-shaped fins, and internally installing the heat-conducting section in the full-length sleeve to form a straight pipe section;
and step four, connecting the straight pipe section and the bent pipe section to form the heat exchange coil pipe with the heat-conducting section with the special-shaped fins.
In the second step, the molding device 500 is used for operation.
The forming device 500 comprises a rolling wheel set, the rolling wheel set comprises a rolling male die set and a rolling female die set which are arranged up and down (the upper and lower positions of the rolling male die set and the rolling female die set can be exchanged), a rolling gap is reserved between the rolling male die set and the rolling female die set which are arranged up and down, the rolling gap is matched with the thickness of a main fin, the rolling male die set comprises a front rolling male die 501 and a rear rolling female die 501 which are synchronously connected through a connecting wheel shaft, the rolling female die set comprises a front rolling female die 502 and a rear rolling female die 502 which are synchronously connected through the connecting wheel shaft, fin gaps are reserved between the two rolling male dies 501 and between the rolling female dies 502, the fin gaps are matched with the thickness of the main fin, the rolling male die 501 and the rolling female die 502 are cylindrical structures which are arranged longitudinally, bulges matched with the special-shaped structure 801.3 are arranged on the rolling male die 501 at intervals along the circumferential direction, the concave rolling mould 502 is provided with depressions matched with the irregular structure 801.3 at intervals along the circumferential direction, the protrusions of the convex rolling mould 501 correspond to the depressions of the concave rolling mould 502, the convex rolling mould 501 and the concave rolling mould 502 are connected through a first synchronous belt 503 at the front side, the convex rolling mould 501 or the concave rolling mould 502 is connected with the output end of a motor 504 through a second synchronous belt 505, the left and the right of the convex rolling mould and the concave rolling mould are respectively provided with a first section positioning wheel set 506 and a second section positioning wheel set 507, the first section positioning wheel set and the second section positioning wheel set have the same structure, the first section positioning wheel set 506 comprises a first section upper positioning wheel set and a first section lower positioning wheel set, the first section upper positioning wheel set comprises a front section upper positioning wheel set and a rear section upper positioning wheel set which are synchronously connected through a connecting wheel shaft, the difference is that the surface of the positioning wheel of the second profile positioning wheel set of the first profile positioning wheel set is smooth and has no bulges or depressions, the positioning wheel of the second profile positioning wheel set of the first profile positioning wheel set plays a role in positioning and guiding, the connecting wheel shaft of the rolling male die set is connected with the connecting wheel shaft of the positioning wheel set on the first profile through a third synchronous belt 508, the connecting wheel axle of the embossing die set is connected with the connecting wheel axle of the positioning wheel set on the second profile through a fourth synchronous belt 509.
The steps of the molding apparatus 500 are as follows:
the one end of logical long section bar 910 follow forming device 500 moves towards the other end, vertical main fin is located the fin clearance, horizontal main fin is located between last locating wheel and the lower locating wheel, when leading to long section bar 910 through the roll-in wheelset, horizontal main fin is rolled in the roll-in clearance by the roll-in wheelset and is become the dysmorphism structure, half shaping cycle is accomplished in the above-mentioned step, then lead to long section bar 910 and rotate ninety degrees, walk once again in forming device 500, accomplish two other main fin become the dysmorphism structure, the final completion leads to long section bar 910 goes up the dysmorphism structure shaping of four main fins.
As a preferred second type of forming device, referring to fig. 18-19, the forming device 500 is further provided with a second roller set at the left end, the second roller set is different from the first roller set in that it is rotated 90 degrees, so that it can be used for forming the profile structure of the longitudinal main fin, and the second roller set and the first roller set are driven by a synchronous transmitter. Thus, the step of forming the apparatus 500 only requires that the elongated profile 910 run from one end of the forming apparatus 500 to the other.
Wherein, the third step adopts the torsion jacking device 900 to operate.
The torsion jacking device 900 comprises a push rod 901 which is transversely arranged leftwards, the push rod 901 is arranged in a push rod sliding groove 901.2 which is transversely arranged, a push rod gear strip 901.1 which is arranged along the length direction of the push rod 901 is arranged at the top of the push rod 901, a push rod motor 903 is arranged above the push rod 901, a push rod motor gear 903.1 is arranged at the output end of the push rod motor 903, and the push rod motor gear 903.1 is matched with the push rod gear strip 901.1, so that the forward rotation and the reverse rotation of the push rod motor 903 can realize the left-right transverse movement of the push rod 901;
a profile outer sleeve 904 which is transversely arranged is arranged at the left of the push rod 901, the profile outer sleeve 904 comprises a profile outer sleeve base 904.1, a profile outer sleeve bottom semi-circular tube 904.2 is fixedly arranged on the profile outer sleeve base 904.1, an openable profile outer sleeve top semi-circular tube 904.3 is arranged on the profile outer sleeve bottom semi-circular tube 904.2, and the profile outer sleeve bottom semi-circular tube 904.2 is fixedly connected with the profile outer sleeve top semi-circular tube 904.3 through a semi-circular tube fixing pin 904.4;
a section sleeve die 905 is arranged on the left side of the section outer sleeve 904, an electromagnetic brake 902 is arranged outside the section sleeve die 905, the electromagnetic brake 902 can be used for limiting the rotation of the section sleeve die 905, the section sleeve die 905 comprises an annular section sleeve die sleeve 905.1 and an inner section sleeve die core 905.2, a die core cavity is arranged in the section sleeve die core 905.2 and is used for heat-conducting section to pass through transversely, the shape of the die core cavity is matched with the solid shape formed by compounding the first fin group and the second fin group, for example, the die core cavity matched with embodiment 1 has four channels for main fins to pass through, for example, the die core cavity matched with embodiment 2 has eight channels for main fins to pass through;
a cutting gap is reserved between the section sleeve die 905 and the section outer sleeve 904, a cutting motor piece 906.1 is arranged in the cutting gap, the cutting motor piece 906.1 is fixed on the output end of the cutting motor 906, and the cutting motor 906 is arranged on a height lifting device 906.2;
a profile gear sleeve die 907 is arranged on the left side of the profile sleeve die 905, a torsion gap is formed between the profile sleeve die 905 and the profile gear sleeve die 907, the profile gear sleeve die 907 comprises an annular profile gear sleeve die 907.1 and an internal profile gear sleeve die core 907.2, a circle of external gear 907.3 is arranged outside a profile gear sleeve die 907.1, the profile gear sleeve die core 907.2 and a profile sleeve die 905.2 have the same die core cavity and the channel straightness of the die core cavity is consistent, a rotary motor 907.4 is arranged below the profile gear sleeve die 907, the output end of the rotary motor 907.4 is connected with a rotary driving gear 907.6 through a speed changer 907.5, and the rotary driving gear 907.6 is meshed with the external gear 907.3; the rotary motor 907.4 can drive the profile gear sleeve die 907 to rotate by acting;
the left of section bar cover die 905 is provided with a sleeve pipe and rotates seat 908, the sleeve pipe rotates seat 908 and includes fixed support 908.1, fixed support 908.1's right side is provided with the rotatory fixed bolster 908.2 of sleeve pipe, be connected with the rotatory activity card mould 908.4 of sleeve pipe through bearing 908.3 on the rotatory fixed bolster 908.2 of sleeve pipe, the right-hand member of the rotatory activity card mould 908.4 of sleeve pipe is provided with the bayonet socket with the internal diameter assorted of logical long sleeve pipe 909, and the distance between rotatory activity card mould 908.4 of sleeve pipe and the section bar cover die 905 equals the length of the logical long sleeve pipe of waiting to install.
The specific working steps of the torsion jacking device 900 are as follows:
step one, feeding
Opening a top semicircular pipe 904.3 of the profile outer sleeve, putting the full-length profile, closing a top semicircular pipe 904.3 of the profile outer sleeve, locking a semicircular pipe fixing pin 904.4, placing a full-length sleeve on a sleeve rotating seat 908, fixing the left end of the full-length sleeve on a sleeve rotating movable clamping die 908.4, and enabling the right end of the full-length sleeve to be close to the left side of a profile gear sleeve die 907;
step two, first jacking
Starting a push rod motor 903, moving a push rod 901 leftwards along a push rod sliding groove 901.2 to push a full-length section bar in a section bar outer sleeve 904 to enter a section bar sleeve die 905 and a section bar gear sleeve die 907, enabling a solid part of the full-length section bar to penetrate through die core cavities in a section bar sleeve die core 905.2 and a section bar gear sleeve die core 907.2, and enabling the push rod motor 903 to push the push rod 901 to push the full-length section bar to be positioned in a cutting gap for a length equal to a set process length or equal to the length of a fin group;
step three, cutting
The push rod motor 903 stops acting, the cutting motor 906 is started to cut the main fins and the auxiliary fins of the full-length section, the cutting motor 906 descends, meanwhile, the rotary motor 907.4 is started to enable the section gear sleeve die 907 to rotate for a circle, at the moment, the electromagnetic brake 902 releases the section sleeve die 905, the section sleeve die 905 also rotates for a circle along with the section gear sleeve die 907, the full-length section is cut for a circle until only the mandrel 801.1 is left uncut, and a fin group gap is formed at the cut part;
step four, second jacking and extending
After cutting, the push rod motor 903 continues to act, and the push rod 901 continues to push the full-length section to the left until the fin group gap formed on the full-length section in the previous step is located at the torsion gap between the section sleeve mold 905 and the section gear sleeve mold 907;
step five, twisting
The push rod motor 903 stops acting, the electromagnetic brake 902 holds the section bar sleeve die 905 and limits the rotation of the section bar sleeve die 905, the rotary motor 907.4 is started to enable the section bar gear sleeve die 907 to rotate for forty-five degrees, the full-length section bar forms torsion at the position of the fin group gap, and the fin group on the left side of the fin group gap is axially staggered from the uncut full-length section bar on the right side by forty-five degrees;
and repeating the second step to the fifth step, completing the cutting of the gaps of the multiple sections of fin groups and the twisting between the adjacent fin groups, enabling the section which is pushed to the left side of the section gear sleeve mold 907 and is subjected to the cutting and twisting to enter the through-length sleeve until the whole through-length section is subjected to the cutting and twisting and enters the through-length sleeve, and performing spot welding on the heat conduction section 801 of the special-shaped fin and the through-length sleeve after blanking to form a straight pipe section.
Preferably, a molded twisted top-extension apparatus 300 has functions of the molding apparatus 500 and the twisted top-extension apparatus 900, a portion of the twisted top-extension apparatus 900 excluding the push rod 901, the push rod motor 903 and the profile outer sleeve 904 is referred to as a twisted top-extension apparatus main body, the molded twisted top-extension apparatus 300 includes the twisted top-extension apparatus main body, and the second form of the molding apparatus 500 is provided on the right side of the twisted top-extension apparatus main body, so that the full length profile 910 can be molded by the molding apparatus 500 and then directly enter the main body of the twisted top-extension apparatus 300 to be twisted and extended.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (7)
1. A production method of a heat exchange coil pipe made of heat-conducting section bars with special-shaped fins is characterized by comprising the following steps:
firstly, adopting a die to extrude and form a through long section with the cross section shapes matched with those of the fin groups, and additionally producing a through long sleeve with the caliber consistent with that of a main body of the heat exchange coil;
step two, carrying out forming operation on the full-length section;
thirdly, twisting the full-length section into a heat-conducting section with special-shaped fins, and internally installing the heat-conducting section in the full-length sleeve to form a straight pipe section;
and step four, connecting the straight pipe section and the bent pipe section to form the heat exchange coil pipe with the heat-conducting section with the special-shaped fins.
2. The method for producing a heat exchange coil of heat conducting profile with deformed fins as claimed in claim 1, wherein the second step is performed by using a forming device,
the forming device comprises a rolling wheel set, the rolling wheel set comprises a rolling male die set and a rolling female die set which are arranged up and down, a rolling gap is reserved between the rolling male die set and the rolling female die set which are arranged up and down, the rolling gap is matched with the thickness of a main fin, the rolling male die set comprises a front rolling male die and a rear rolling male die which are synchronously connected through a connecting wheel shaft, the rolling female die set comprises a front rolling female die and a rear rolling female die which are synchronously connected through the connecting wheel shaft, fin gaps are reserved between the two rolling male dies and between the rolling female dies and are matched with the thickness of the main fin, the rolling male dies and the rolling female dies are longitudinally arranged in a cylindrical structure, bulges matched with the size of a special-shaped structure are arranged on the rolling male dies at intervals along the circumferential direction, and pits matched with the size of the special-shaped structure are arranged on the rolling female dies at intervals along the circumferential direction, and the protruding concave position of the convex mould of roll-in corresponds with the concave position of the concave mould of roll-in, the left and the right side of the convex mould group of roll-in and the concave mould group of roll-in are provided with first section bar locating wheel group and second section bar locating wheel group respectively, and first section bar locating wheel group and second section bar locating wheel group have the same structure.
3. The method for producing a heat exchange coil pipe of heat-conducting section with special-shaped fins as claimed in claim 2, wherein the male rolling mold and the female rolling mold are connected by a first synchronous belt on the front side, and the male rolling mold or the female rolling mold and the output end of a motor are connected by a second synchronous belt.
4. The method of claim 2, wherein the first positioning wheel set comprises a front upper positioning wheel set and a rear lower positioning wheel set, the front upper positioning wheel set comprises a front upper positioning wheel set and a rear upper positioning wheel set, the front upper positioning wheel set and the rear upper positioning wheel set are synchronously connected through a connecting wheel shaft, the front lower positioning wheel set comprises a front lower positioning wheel set and a rear lower positioning wheel set, the front upper positioning wheel set and the rear lower positioning wheel set comprise a front upper positioning wheel set and a rear lower positioning wheel set, the front upper positioning wheel set and the rear upper positioning wheel set are synchronously connected through a connecting wheel shaft, the rear lower positioning wheel set comprises a front lower positioning wheel set and a rear lower positioning wheel set, the front lower positioning wheel set and the rear lower positioning wheel set are synchronously connected through a connecting wheel shaft, the first positioning wheel set and the second positioning wheel set have corresponding gaps with substantially the same roller wheel set, the difference lies in that the surface of the positioning wheel of the first profile positioning wheel group and the second profile positioning wheel group is a smooth surface.
5. The method of claim 2, wherein the forming device comprises the following steps:
lead to long section bar and move towards the other end from forming device's one end, vertical main fin is located the fin clearance, horizontal main fin is located between locating wheel and the lower locating wheel, when leading to long section bar through the roll-in wheelset, horizontal main fin is rolled in the roll-in clearance by the roll-in wheelset and is become the dysmorphism structure, half one becomes the dysmorphism structure cycle is accomplished to the above-mentioned step, then lead to long section bar rotation ninety degrees, walk once again in following leading to long section bar, accomplish the one-tenth dysmorphism structure of two other main fins, the one-tenth dysmorphism structure of four main fins on the last section bar of accomplishing of leading to long finally.
6. The method of claim 1, wherein step three is performed by a torsion jacking device,
the torsion jacking device comprises a push rod which is transversely arranged leftwards, the push rod is arranged in a push rod sliding groove which is transversely arranged, a push rod gear rack which is arranged along the length direction of the push rod is arranged at the top of the push rod, a push rod motor is arranged above the push rod, a push rod motor gear is arranged at the output end of the push rod motor, and the push rod motor gear is matched with the push rod gear rack;
the section outer sleeve is transversely arranged at the left side of the push rod and comprises a section outer sleeve base, a section outer sleeve bottom semicircular tube is fixedly arranged on the section outer sleeve base, an openable section outer sleeve top semicircular tube is arranged on the section outer sleeve bottom semicircular tube, and the section outer sleeve bottom semicircular tube is fixedly connected with the section outer sleeve top semicircular tube through a semicircular tube fixing pin;
a section bar cover die is arranged on the left side of the section bar outer sleeve, an electromagnetic brake is arranged outside the section bar cover die and can be used for limiting the rotation of the section bar cover die, the section bar cover die comprises an annular section bar cover die sleeve and an internal section bar cover die core, a die core cavity is arranged in the section bar cover die core and is used for allowing heat-conducting section bars to transversely pass through, and the shape of the die core cavity is matched with the solid shape formed by compounding the first fin group and the second fin group;
a cutting gap is reserved between the section sleeve die and the section outer sleeve, a cutting motor sheet is arranged in the cutting gap, the cutting motor sheet is fixed on the output end of a cutting motor, and the cutting motor is arranged on a height lifting device;
a profile gear sleeve die is arranged on the left side of the profile sleeve die, a torsional gap is formed between the profile sleeve die and the profile gear sleeve die, the profile gear sleeve die comprises an annular profile gear sleeve die sleeve and an internal profile gear sleeve die core, a circle of external gear is arranged outside the profile gear sleeve die sleeve, the profile gear sleeve die core has the same die core cavity as the profile sleeve die core, the straightness of a channel of the die core cavity is consistent, a rotary motor is arranged below the profile gear sleeve die, the output end of the rotary motor is connected with a rotary driving gear through a transmission, and the rotary driving gear is meshed with the external gear; the rotary motor acts to drive the gear sleeve die of the section bar to rotate;
the left of section bar cover mould is provided with a sleeve pipe and rotates the seat, the sleeve pipe rotates the seat and includes fixing support, fixing support's right side is provided with the rotatory fixed bolster of sleeve pipe, be connected with the rotatory movable card mould of sleeve pipe through the bearing on the rotatory fixed bolster of sleeve pipe, the right-hand member of the rotatory movable card mould of sleeve pipe is provided with the bayonet socket with leading to the sheathed tube internal diameter assorted of length, and the distance between the rotatory movable card mould of sleeve pipe and the section bar cover mould equals the length of the leading to the sheathed tube of waiting to install.
7. The method for producing a heat exchange coil of heat conducting profile with profiled fins as claimed in claim 6, wherein the said twisting and jacking device comprises the following steps:
step one, feeding
Opening a semicircular pipe at the top of the profile outer sleeve, putting the through-length profile, closing the semicircular pipe at the top of the profile outer sleeve, locking a semicircular pipe fixing pin, placing a through-length sleeve on a sleeve rotating seat, fixing the left end of the through-length sleeve on a sleeve rotating movable clamping die, and enabling the right end of the through-length sleeve to be close to the left side of a profile gear sleeve die;
step two, first jacking
Starting a push rod motor, moving a push rod leftwards along a push rod sliding groove to push a through long section bar in a section bar outer sleeve to enter a section bar sleeve die and a section bar gear sleeve die, enabling the solid part of the through long section bar to penetrate through a die core cavity in a section bar sleeve die core and a die core cavity in a section bar gear sleeve die core, and enabling the push rod motor to push the length of the through long section bar, which is positioned in a cutting gap, to be equal to the set process length or the length of a fin group;
step three, cutting
The push rod motor stops acting, the cutting motor is started to cut the main fins and the auxiliary fins of the full-length section, the cutting motor descends, the rotary motor is started simultaneously to enable the section gear sleeve die to rotate for a circle, the electromagnetic brake releases the section gear sleeve die at the moment, the section gear sleeve die also rotates for a circle along with the section gear sleeve die, the full-length section is cut for a circle until only the mandrel is left to be uncut, and a fin group gap is formed at the cut part;
step four, second jacking and extending
After cutting, the push rod motor continues to act, the push rod continues to push the full-length section leftwards until a fin group gap formed on the full-length section in the previous step is positioned at a torsion gap between the section sleeve die and the section gear sleeve die;
step five, twisting
The push rod motor stops acting, the electromagnetic brake embraces the section bar sleeve die and limits the rotation of the section bar sleeve die, the rotary motor is started to enable the section bar gear sleeve die to rotate for forty-five degrees, the full-length section bar forms torsion at the gap of the fin group of the full-length section bar, and the fin group at the left side of the gap of the fin group and the full-length section bar at the right side of the gap of the fin group are axially staggered for forty-five degrees;
and repeating the second step to the fifth step, completing the cutting of the gaps of the multiple sections of fin groups and the twisting between the adjacent fin groups, enabling the cut and twisted section which is pushed to the left side of the section gear sleeve die to enter the through-length sleeve until the whole through-length section is cut and twisted and enters the through-length sleeve, and performing spot welding on the heat-conducting section of the special-shaped fin and the through-length sleeve after blanking to form a straight pipe section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111671543.2A CN114309328B (en) | 2021-12-31 | 2021-12-31 | Production method of heat exchange coil pipe of heat conduction profile with special-shaped fins |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111671543.2A CN114309328B (en) | 2021-12-31 | 2021-12-31 | Production method of heat exchange coil pipe of heat conduction profile with special-shaped fins |
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| CN114309328A true CN114309328A (en) | 2022-04-12 |
| CN114309328B CN114309328B (en) | 2023-09-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3294162A (en) * | 1963-12-23 | 1966-12-27 | Reynolds Metals Co | Heat exchanger construction and method for making the same |
| GB0019786D0 (en) * | 2000-08-12 | 2000-09-27 | Ollis William H | Method of manufacturing connecting devices |
| JP2003130568A (en) * | 2001-10-25 | 2003-05-08 | Mitsubishi Heavy Ind Ltd | Manufacturing method for tube with spiral fin, manufacturing apparatus for tube with spiral fin and tube with spiral fin |
| CN110174009A (en) * | 2019-06-12 | 2019-08-27 | 珠海格力电器股份有限公司 | Double-tube heat exchanger with fin |
| CN211803241U (en) * | 2020-02-25 | 2020-10-30 | 龙川合心合制冷设备有限公司 | Finned evaporator pipeline torsion device |
-
2021
- 2021-12-31 CN CN202111671543.2A patent/CN114309328B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3294162A (en) * | 1963-12-23 | 1966-12-27 | Reynolds Metals Co | Heat exchanger construction and method for making the same |
| GB0019786D0 (en) * | 2000-08-12 | 2000-09-27 | Ollis William H | Method of manufacturing connecting devices |
| JP2003130568A (en) * | 2001-10-25 | 2003-05-08 | Mitsubishi Heavy Ind Ltd | Manufacturing method for tube with spiral fin, manufacturing apparatus for tube with spiral fin and tube with spiral fin |
| CN110174009A (en) * | 2019-06-12 | 2019-08-27 | 珠海格力电器股份有限公司 | Double-tube heat exchanger with fin |
| CN211803241U (en) * | 2020-02-25 | 2020-10-30 | 龙川合心合制冷设备有限公司 | Finned evaporator pipeline torsion device |
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| CN114309328B (en) | 2023-09-26 |
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