Finned tube spiral fin assembling equipment

Abstract

The invention relates to the technical field of assembly of spiral finned tubes, in particular to assembly equipment for spiral fins of finned tubes, a base tube is driven to rotate through rotation of a roller, the base tube sleeved with the spiral fins can be rotated and turned over conveniently, and then comprehensive welding work of contact points of the spiral fins and the base tube is completed in cooperation with welding equipment. The distance between the two rolling wheels on the same side can be adjusted, so that T-shaped frames with different diameters can be conveniently and stably placed on the assembling equipment, when the arc-shaped supporting piece ascends to extrude and abut against the spiral fins, the two brake plates descend through transmission of the gear and the rack till the two brake plates abut against the ground, and therefore the spiral fins can be stably assembled. The whole assembly equipment is rapidly limited and fixed, an L-shaped blocking strip beside the arc-shaped supporting piece can abut against a fixedly-arranged blocking rod, so that the arc-shaped supporting piece is forced to rotate, and welding slag generated in the welding process of the spiral fins and the base tube is discharged in cooperation with manual cleaning; and the problem that the arc-shaped supporting piece is unstable in extrusion when the spiral fin is extruded next time is solved.

Description

Technical Field

[0001] The invention relates to the technical field of spiral finned tube assembly, in particular to an assembly device for spiral fins of a finned tube. Background Art

[0002] Spiral finned tube is a kind of high-efficiency heat exchange element. By welding or sleeve spiral fins on the outer surface of the base tube, the heat exchange area is significantly increased and the heat exchange efficiency is improved.

[0003] Spiral finned tubes are made of base tubes and spiral fins. The manufacturing process includes high-frequency resistance welding, brazing, inlaying, three-roller cross-rolling and other methods. Among them, high-frequency resistance welding is the most widely used, with the advantages of high welding rate, high production efficiency and high degree of automation.

[0004] In the traditional welding process of spiral fins and base tubes, in order to ensure the stability of the welding between the two, it is generally necessary to limit and fix the spiral fins and base tubes. However, since the diameter of the base tubes ranges from Φ16mm to Φ165mm and the length ranges from 1 meter to 12 meters, it is very inconvenient to achieve stable welding of the spiral fins for base tubes with large diameters and long lengths. This includes limiting and fixing the spiral fins and base tubes, as well as all-round welding of the contact points between the spiral fins and the base tube. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an assembly device for spiral fins of finned tubes, which can effectively solve the problems raised in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides an assembly device for spiral fins of fin tubes, comprising two T-shaped frames arranged in parallel and two universal wheels respectively installed under the corresponding T-shaped frames, the two adjustment assemblies each include a first mounting seat respectively fixedly installed vertically above the corresponding T-shaped frames, two second mounting seats that can increase or decrease the spacing are provided above the two first mounting seats, and rollers are rotatably installed between the two opposite inner side walls of the four second mounting seats, the fixing assembly includes a lifting plate that is lifted and slidably arranged between the two T-shaped frames, an arc support is rotatably installed at the top edge of the lifting plate, and a support bar that conflicts with the corresponding lifting plate is also vertically fixedly installed on the bottom of the arc support, and an L-shaped stopper is vertically fixedly installed on the outer wall of the support bar, the fixing assembly also includes a stop rod vertically fixedly installed between the two first mounting seats, the stop rod is arranged to conflict with the L-shaped stopper, and the brake assembly includes two brake plates that are lifted and slidably arranged on the opposite sides of the two T-shaped frames, and the movement direction of the two brake plates is opposite to the movement direction of the lifting plate.

[0008] Furthermore, two slide grooves are provided on the tops of the two first mounting seats, and a double-headed screw rod is rotatably installed between the two opposite inner side walls of the two first mounting seats. The outer rod walls of the two double-headed screw rods are threaded with two nut seats, and the bottom ends of the four nut seats are vertically fixed with sliders, and the bottoms of the four sliders are respectively slidably installed in the corresponding slide grooves. The first motor is vertically fixedly installed at one end of the two first mounting seats, and the output ends of the two first motors are fixedly connected to the corresponding ends of the double-headed screw rods.

[0009] Furthermore, the four second mounting seats are respectively vertically fixedly installed on the top of the corresponding nut seat, a second motor is provided above each of the two first mounting seats, and the two second motors are respectively vertically fixedly installed on the end of the corresponding second mounting seat, and the output ends of the two second motors are respectively fixedly connected to the center position of the corresponding roller side.

[0010] Furthermore, the fixing assembly also includes a fixing rod vertically fixedly installed on the inner walls of the two T-shaped frames, a lifting cylinder is vertically fixedly installed between the two fixing rods, the lifting plate is vertically fixedly installed on the output end of the lifting cylinder, and a rotating part is installed at the top edge of the lifting plate and the bottom edge of the arc-shaped support.

[0011] Furthermore, the rotating member includes two fixed blocks vertically fixedly installed on the top of the lifting plate, and also includes a member rotatably installed on one side of the two fixed blocks facing each other and simultaneously vertically fixedly connected to the bottom of the arc-shaped supporting member.

[0012] Furthermore, the brake assembly also includes two upper racks installed at the bottom of the lifting plate, and gears rotatably installed on two fixed rods respectively. The two gears are respectively engaged with the corresponding lifting plates, and the other sides of the two gears are engaged with lower racks installed. The tops of the two brake plates are respectively fixedly connected vertically to the corresponding lower racks.

[0013] Furthermore, a stopper is vertically fixedly installed on the top of the upper rack and the bottom of the lower rack, and the width of the stopper is greater than the width of the upper rack and the lower rack, but smaller than the width of the fixing rod.

[0014] Furthermore, a square hole is formed through each of the two fixing rods, and two convex strips are fixedly installed on the two opposite inner hole walls of the two square holes. The gear is rotatably installed between the two opposite inner hole walls of the square hole. Grooves are formed on both sides of the upper rack and the lower rack. The upper rack and the lower rack are lifted and slid through the square hole by sliding cooperation of the grooves and the convex strips.

[0015] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0016] 1. Two parallel T-shaped frames are set up, and two rotatable rollers are set above the two T-shaped frames. The two ends of the base pipe are placed above the corresponding two rollers. The rotation of the rollers drives the base pipe to rotate, which facilitates the rotation and flipping of the base pipe with spiral fins. Then, the welding equipment is used to complete the comprehensive welding work of the contact points between the spiral fins and the base pipe. The distance between the two rollers on the same side can be adjusted, so that T-shaped frames of different diameters can be stably placed on this assembly equipment, increasing the scope of use.

[0017] 2. An arc-shaped support is installed between the two T-shaped frames and directly below the base pipe. The arc-shaped support squeezes and fixes the spiral fins on the surface of the base pipe, thereby ensuring that the spiral fins will not move during the welding process and improving welding accuracy. While the arc-shaped support rises to squeeze and contact the spiral fins, the two brake plates are driven by the gear rack to descend until they contact the ground, completing the rapid limit fixation of the entire assembly equipment.

[0018] 3. When the arc-shaped support descends and no longer squeezes the spiral fins, the L-shaped baffle next to the arc-shaped support will conflict with the fixed baffle, forcing the arc-shaped support to rotate. The welding slag generated during the welding process of the spiral fins and the base tube can be discharged by manual cleaning, avoiding the problem of unstable extrusion when the arc-shaped support squeezes the spiral fins next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0022] Figure 3 It is a schematic diagram of the fixing rod structure of the present invention;

[0023] Figure 4 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0024] Figure 5 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0025] Figure 6For the present invention Figure 1 Enlarged structural diagram at point C in the middle.

[0026] The numbers in the figure represent:

[0027] 1. T-shaped frame; 11. Universal wheel;

[0028] 21. First mounting seat; 22. Slide; 23. Double-ended screw; 24. Nut seat; 25. Slider; 26. First motor; 27. Second mounting seat; 28. Roller; 29. ​​Second motor;

[0029] 31. Fixed rod; 32. Lifting cylinder; 33. Lifting plate; 34. Arc-shaped support; 35. Rotating member; 36. Support bar; 37. L-shaped stop bar; 38. Stop rod;

[0030] 41. Upper rack; 42. Gear; 43. Lower rack; 44. Brake plate. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Example 1:

[0034] Reference Figure 1-6 , which is the first embodiment of the present invention, an assembly device for spiral fins of finned tubes includes two T-shaped frames 1 arranged in parallel and two universal wheels 11 respectively installed under the corresponding T-shaped frames 1, which facilitate the flexible movement of the entire device. The two adjustment components each include a first mounting seat 21 respectively fixedly installed vertically above the corresponding T-shaped frame 1, and two second mounting seats 27 capable of increasing or decreasing the spacing are respectively provided above the two first mounting seats 21. Rollers 28 are rotatably installed between the two opposite inner side walls of the four second mounting seats 27. The design purpose of the rollers 28 is to facilitate the rotation and flipping of the base tube;

[0035] The fixing assembly includes a lifting plate 33 that is lifted and slidably arranged between the two T-shaped frames 1, and an arc-shaped support 34 is rotatably installed at the top edge of the lifting plate 33. The bottom of the arc-shaped support 34 is also vertically fixedly installed with a support bar 36 that conflicts with the corresponding lifting plate 33, and the outer wall of the support bar 36 is vertically fixedly installed with an L-shaped stop bar 37. The fixing assembly also includes a stop bar 38 that is vertically fixedly arranged between the two first mounting seats 21, and the stop bar 38 is set to conflict with the L-shaped stop bar 37. The stop bar 38 and the L-shaped stop bar 37 are determined according to the height change of the lifting plate 33, but their vertical positions are relative to each other, ensuring that the L-shaped stop bar 37 can conflict with the stop bar 38 during the lowering process. The brake assembly includes two brake plates 44 that are lifted and slidably arranged on the opposite sides of the two T-shaped frames 1. The movement direction of the two brake plates 44 is opposite to the movement direction of the lifting plate 33, and ensures that when the arc-shaped support 34 rises to conflict with the spiral fin, the lifting plate 33 simultaneously conflicts with the ground.

[0036] Example 2:

[0037] Reference Figure 1-2 4-5 is a second embodiment of the present invention, which is different from the first embodiment in that: two first mounting seats 21 are each provided with two slide grooves 22 on the top, a double-headed screw rod 23 is rotatably installed between the two opposite inner side walls of the two first mounting seats 21, the outer rod walls of the two double-headed screw rods 23 are threadedly sleeved with two nut seats 24, the bottom ends of the four nut seats 24 are vertically fixedly installed with sliders 25, the bottoms of the four sliders 25 are respectively slidably installed in the corresponding slide grooves 22, one end of the two first mounting seats 21 is vertically fixedly installed with a first motor 26, and the output ends of the two first motors 26 are fixedly connected to the corresponding ends of the double-headed screw rods 23;

[0038] The four second mounting seats 27 are respectively fixedly mounted vertically on the top of the corresponding nut seat 24. A second motor 29 is provided above each of the two first mounting seats 21. The two second motors 29 are respectively fixedly mounted vertically on the ends of the corresponding second mounting seats 27. The output ends of the two second motors 29 are respectively fixedly connected to the center position of one side of the corresponding roller 28. Figure 4 It can be seen that the outer diameter of the roller 28 is significantly larger than that of the second motor 29 , and the edge contour of the roller 28 exceeds the edge contour of the second mounting seat 27 , so the roller 28 must be in contact with the end of the base pipe.

[0039] The remaining structures are the same as those of Example 1.

[0040] Example 3:

[0041] Reference Figure 1-35. The third embodiment of the present invention is different from the second embodiment in that: the fixing assembly also includes a fixing rod 31 vertically fixedly mounted on the inner side walls of the two T-shaped frames 1, and a lifting cylinder 32 is vertically fixedly mounted between the two fixing rods 31. The lifting plate 33 is vertically fixedly mounted on the output end of the lifting cylinder 32, and a rotating member 35 is installed at the top edge of the lifting plate 33 and the bottom edge of the arc-shaped support 34. The arc-shaped support 34 is a cross bar structure with an arc-shaped upper surface and a horizontal lower surface. The rotating member 35 includes two fixed blocks vertically fixedly mounted on the top of the lifting plate 33, and also includes a rotating member 35 that is rotatably mounted on the opposite side of the two fixing blocks and is vertically fixedly connected to the bottom of the arc-shaped support 34 at the same time. That is to say, the arc-shaped support 34 and the lifting plate 33 are in a rotational connection relationship, and both rotate at the edge. Therefore, when the other side of the arc-shaped support 34 is obstructed, it will cause the arc-shaped support 34 to rotate and tilt.

[0042] The remaining structures are the same as those of Example 2.

[0043] Example 4:

[0044] Reference Figure 1-2 5-6 is a fourth embodiment of the present invention, which differs from the third embodiment in that the brake assembly further includes two upper racks 41 mounted on the bottom of the lifting plate 33, and gears 42 rotatably mounted on the two fixed rods 31, the two gears 42 respectively meshing with the corresponding lifting plates 33, and the other sides of the two gears 42 are meshed with lower racks 43, and the tops of the two brake plates 44 are respectively fixedly connected to the corresponding lower racks 43;

[0045] A stopper is vertically fixedly installed on the top of the upper rack 41 and the bottom of the lower rack 43. The width of the stopper is greater than the width of the upper rack 41 and the lower rack 43, but smaller than the width of the fixed rod 31. A square hole is penetrated on the two fixed rods 31, and two convex strips are fixedly installed on the two opposite inner hole walls of the two square holes. The gear 42 is rotatably installed between the two opposite inner hole walls of the square hole. Grooves are provided on both sides of the upper rack 41 and the lower rack 43. The upper rack 41 and the lower rack 43 are lifted and slid through the square holes by sliding cooperation of the grooves and the convex strips.

[0046] The remaining structures are the same as those of Example 3.

[0047] Working principle of the present invention:

[0048] In the first step, the entire device is moved to the designated assembly location using the universal wheel 11. The spacing between two adjacent rollers 28 is then adjusted based on the outer diameter of the base pipe to be assembled. Specifically, the first motor 26 is activated to rotate the double-ended screw 23, thereby driving the two nut seats 24 corresponding to the tops of the two double-ended screws 23 to move toward or away from each other. This increases or adjusts the spacing between the two second mounting seats 27, thereby adjusting the spacing between the two rollers 28.

[0049] In the second step, the two ends of the base pipe that are covered with spiral fins but not yet welded are placed on the corresponding two rollers 28, and the specific position of the spiral fins sliding on the base pipe is adjusted. The lifting cylinder 32 is then started to raise the height of the lifting plate 33 until the arc-shaped support 34 contacts the spiral fins and stops. As the height of the lifting plate 33 rises, the upper rack 41 is also driven to rise, thereby engaging and driving the corresponding gear 42 to rotate, and then engaging and driving the corresponding lower rack 43 to fall. When the lifting plate 33 just rises to the position of contact with the spiral fins, the brake plate 44 contacts the ground. The static friction resistance generated between the brake plate 44 and the ground completes the limit fixation of the entire device without locking and fixing the four universal wheels 11. At this time, the spiral fins and the base pipe can be welded by welding equipment;

[0050] In the third step, since the arc-shaped support 34 contacts the lower half of the spiral fin, welding cannot be performed on this part. At this time, it is necessary to start the lifting cylinder 32 to lower the lifting plate 33, that is, the height of the arc-shaped support 34, so that the arc-shaped support 34 no longer conflicts with the spiral fin. At this time, the second motor 29 is started to drive the corresponding roller 28 to rotate. The rolling friction resistance between the rollers 28 at both ends and the base tube drives the base tube to rotate. Since the spiral fin has completed half of the welding work with the base tube, the rotation of the base tube will also drive the spiral fin to rotate, completing the flipping of the spiral fin. At this time, the remaining half of the welding work can be performed;

[0051] In the fourth step, as the arc-shaped support 34 descends, the L-shaped baffle 37 installed on one side of the arc-shaped support 34 will also descend synchronously until it conflicts with the baffle 38. At this time, after the arc-shaped support 34 continues to descend in height, the L-shaped baffle 37 is forced to block and cannot continue to descend synchronously, so that the arc-shaped support 34 is forced to rotate and tilt. The welding slag generated during the welding process on the inner arc wall of the tilted arc-shaped support 34 is cleaned manually to avoid affecting the next contact between the arc-shaped support 34 and the spiral fin.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An assembly device for spiral fins of finned tubes, comprising two T-shaped frames (1) arranged in parallel and two universal wheels (11) respectively installed under the corresponding T-shaped frames (1), characterized in that: Also includes: Two adjustment assemblies each include a first mounting seat (21) vertically fixedly mounted above the corresponding T-shaped frame (1); two second mounting seats (27) capable of increasing or decreasing the spacing are disposed above the two first mounting seats (21); rollers (28) are rotatably mounted between two opposite inner side walls of the four second mounting seats (27); A fixing assembly comprises a lifting plate (33) which is lifted and slidably arranged between two T-shaped frames (1); an arc-shaped support (34) is rotatably mounted on the top edge of the lifting plate (33); a support bar (36) which contacts the corresponding lifting plate (33) is vertically fixedly mounted on the bottom of the arc-shaped support (34); an L-shaped stop bar (37) is vertically fixedly mounted on the outer side wall of the support bar (36); and the fixing assembly further comprises a stop bar (38) which is vertically fixedly mounted between the two first mounting seats (21); the stop bar (38) contacts the L-shaped stop bar (37); The brake assembly comprises two brake plates (44) which are arranged on opposite sides of two T-shaped frames (1) in a lifting and sliding manner. The movement direction of the two brake plates (44) is opposite to the movement direction of the lifting plate (33).

2. The fin tube spiral fin assembly equipment according to claim 1, characterized in that: Two slide grooves (22) are provided on the tops of the two first mounting seats (21), and a double-headed screw rod (23) is rotatably installed between the two opposite inner side walls of the two first mounting seats (21). The outer rod walls of the two double-headed screw rods (23) are threadedly sleeved with two nut seats (24), and the bottom ends of the four nut seats (24) are vertically fixed with sliders (25). The bottoms of the four sliders (25) are respectively slidably installed in the corresponding slide grooves (22), and one end of the two first mounting seats (21) is vertically fixed with a first motor (26), and the output ends of the two first motors (26) are fixedly connected to the ends of the corresponding double-headed screw rods (23).

3. The fin tube spiral fin assembly equipment according to claim 2, characterized in that: The four second mounting seats (27) are respectively fixedly mounted vertically on the top of the corresponding nut seat (24); a second motor (29) is provided above each of the two first mounting seats (21); the two second motors (29) are respectively fixedly mounted vertically on the ends of the corresponding second mounting seats (27); and the output ends of the two second motors (29) are respectively fixedly connected to the center position of one side of the corresponding roller (28).

4. The fin tube spiral fin assembly equipment according to claim 1, characterized in that: The fixing assembly further comprises a fixing rod (31) vertically fixedly mounted on the inner side walls of the two T-shaped frames (1); a lifting cylinder (32) is vertically fixedly mounted between the two fixing rods (31); the lifting plate (33) is vertically fixedly mounted on the output end of the lifting cylinder (32); and a rotating member (35) is mounted at the top edge of the lifting plate (33) and the bottom edge of the arc-shaped support member (34).

5. The fin tube spiral fin assembly equipment according to claim 4, characterized in that: The rotating member (35) includes two fixed blocks vertically fixedly installed on the top of the lifting plate (33), and also includes a member rotatably installed on one side of the two fixed blocks facing each other and vertically fixedly connected to the bottom of the arc-shaped supporting member (34).

6. The fin tube spiral fin assembly equipment according to claim 4, characterized in that: The brake assembly further comprises two upper racks (41) mounted on the bottom of the lifting plate (33), and gears (42) rotatably mounted on the two fixed rods (31), the two gears (42) respectively meshing with the corresponding lifting plates (33), and the other sides of the two gears (42) are meshed with lower racks (43), and the tops of the two brake plates (44) are respectively fixedly connected vertically to the corresponding lower racks (43).

7. The fin tube spiral fin assembly equipment according to claim 6, characterized in that: The top of the upper rack (41) and the bottom of the lower rack (43) are both vertically fixed with stoppers, and the width of the stoppers is greater than the width of the upper rack (41) and the lower rack (43), but smaller than the width of the fixing rod (31).

8. The fin tube spiral fin assembly equipment according to claim 6, characterized in that: A square hole is formed through each of the two fixing rods (31), and two convex strips are fixedly mounted on the two opposite inner hole walls of the two square holes. The gear (42) is rotatably mounted between the two opposite inner hole walls of the square hole. Grooves are formed on both sides of the upper rack (41) and the lower rack (43). The upper rack (41) and the lower rack (43) are lifted and slid through the square hole by sliding cooperation between the grooves and the convex strips.

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