Finned tube coiling machine

Abstract

The utility model relates to a finned tube coiling machine which comprises a first motor, a roller, a machine frame and a limiting block, the roller rotates relative to the machine frame, the first motor drives the roller to rotate, the limiting block is located on the side face of the roller and does linear motion relative to the machine frame, and the motion direction of the limiting block is parallel to a rotating shaft of the roller. The inner side of the finned tube is in contact with the roller in the tube coiling process, the distance between the fins on the inner side of the finned tube is reduced in the tube coiling process, the force generated when the fins generate plastic deformation is improved, the fins on the outer side of the finned tube do not have the pressure of a roller and do not deform, and therefore iron sheets do not need to be filled between the fins, and the production cost is reduced. The product quality and the working efficiency are improved; the roller can adapt to products with various diameter specifications by changing the diameter, and the roller is shrunk directly after pipe reeling is completed, so that the finned pipe is separated from the roller conveniently; and the roller rotates reversely to eliminate the stress of the finned tube after tube reeling is completed, so that the safety and quality problems are avoided.

Description

Technical Field

[0001] The utility model relates to the field of tube winding machines, in particular to a fin tube winding machine. Background Art

[0002] The existing three-wheel tube reel needs to fill iron sheets between the fins (to prevent the fins from being squeezed and deformed when coiling), and then wrap them with cloth or tape after filling (to prevent the filled iron sheets from falling off when coiling). The production efficiency is extremely low, and the excessive stress in the tube reel poses a safety problem, which damages the fins and affects product quality. It requires a lot of manual operation and cannot improve efficiency. Utility Model Content

[0003] The utility model aims to solve the above problems and provides a fin tube coiling machine, which solves the problems of low working efficiency and low product quality of the existing three-wheel coiling machines.

[0004] A fin tube winding machine comprises: a first motor, a roller, a frame and a clamp, wherein the roller rotates relative to the frame, the first motor drives the roller to rotate, the roller comprises an arc plate and a diameter reducing mechanism, a plurality of arc plates are evenly arranged in a circle, the diameter reducing mechanism is used to fix the arc plate at multiple radial positions, and the clamp is connected to the roller and is used to fix the end of the fin tube.

[0005] Based on the above technical solution, the roller also includes a main shaft and an end plate, both ends of the arc plate are slidingly connected to the end plates respectively, the end plates are fixed relative to the main shaft, and the main shaft is rotatably connected to the frame.

[0006] Based on the above technical solution, the diameter-changing mechanism includes an adjusting block, an adjusting bolt and a fixing screw. The end plate is formed with a first through hole. The adjusting bolt radially passes through the first through hole and is rotatably connected to the end plate. The adjusting bolt passes through the adjusting block and is threadedly connected to the adjusting block. The adjusting block is inserted into the first through hole and is slidably connected to the first through hole. The fixing screw passes through the adjusting block and is threadedly connected to the arc plate.

[0007] On the basis of the above technical solution, the end plate is formed with a radial slide groove, and sliders are respectively formed at both ends of the arc plate. The sliders are inserted into the slide groove and are slidably connected with the slide groove.

[0008] On the basis of the above technical solution, it also includes a limit block, which is located on the side of the drum and moves linearly relative to the frame, and the movement direction of the limit block is parallel to the rotation axis of the drum.

[0009] On the basis of the above technical solution, it also includes a screw rod, a nut, a second motor, a track and a mounting frame, the screw rod is rotatably connected to the frame, the nut is sleeved on the outside of the screw rod and connected to the screw rod, the nut is fixedly connected to the mounting frame, the mounting frame is slidably connected to the track, the track is fixedly connected to the frame, the housing of the second motor is fixedly connected to the frame, the output shaft of the second motor drives the screw rod to rotate, and the limit block is fixedly connected to the mounting frame; a through hole is formed inside the limit block.

[0010] On the basis of the above technical solution, it also includes a discharge door and a bearing seat, the main shaft is fixed to the inner ring of the bearing in the bearing seat, the two bearing seats are respectively fixed to the frame and the discharge door, the discharge door is detachably connected to the frame, the discharge door is fixed to the frame by a fixing device, and the discharge door moves relative to the frame after the fixing device releases the fixation of the discharge door; the width of the bearing seat is smaller than the diameter of the end plate.

[0011] On the basis of the above technical solution, it also includes a pin shaft and a support shaft, the support shaft is detachably connected to the main shaft, a second pin hole is formed after the end of the main shaft passes through the bearing seat fixed to the unloading door, a radial blind hole is formed at the end of the main shaft, the second pin hole and the blind hole are communicated, the outer diameter of the support shaft is equal to the inner diameter of the blind hole, and a first pin hole is formed on the support shaft, and after the support shaft is inserted into the blind hole, the pin shaft passes through the first pin hole and the second pin hole to fix the support shaft to the main shaft.

[0012] Based on the above technical solution, the clamp includes a clamping plate and a bolt, the clamping plate is fixedly connected to the bolt, and the bolt is threadedly connected to the roller.

[0013] Based on the above technical solution, it also includes a conveying device, which is located on the side of the drum.

[0014] The utility model has the following advantages:

[0015] The fin tube only contacts one roller during the tube rolling process, and the contact surface is the inner side of the fin tube. The spacing between the fins on the inner side of the fin tube is reduced during the tube rolling process, which increases the force when the fins produce plastic deformation. In addition, the fins on the outer side of the fin tube do not have the pressure of the roller and will not be deformed, so there is no need to fill iron sheets between the fins, which improves product quality and work efficiency.

[0016] The roller can adapt to products of various diameters by changing its diameter. After the tube is rolled, the roller shrinks directly to facilitate the separation of the fin tube and the roller.

[0017] After the tube is rolled, the drum rotates in the opposite direction to eliminate the stress of the fin tube and avoid safety and quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 : A schematic diagram of the top view of the structure of the utility model;

[0020] Figure 2 : A schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 3 : The second schematic diagram of the three-dimensional structure of the utility model (the conveying device is not shown);

[0022] Figure 4 : Figure 3 A local enlarged schematic diagram of the middle A;

[0023] Figure 5 : A schematic cross-sectional view of the utility model;

[0024] Figure 6 : Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 7 : Schematic diagram of the cross-sectional side view of the drum;

[0026] Figure 8 : Schematic diagram of the three-dimensional structure of some components inside the drum. DETAILED DESCRIPTION

[0027] The utility model is further described below with reference to the accompanying drawings and examples:

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] like Figures 1 to 8 As shown, this embodiment provides a fin tube winding machine, including: a first motor 1, a roller 3, a frame 4 and a clamp 30, the roller 3 rotates relative to the frame 4, the first motor 1 drives the roller 3 to rotate, the roller 3 includes an arc plate 34 and a diameter reducing mechanism, a plurality of arc plates 34 are evenly arranged circumferentially, the diameter reducing mechanism is used to fix the arc plate 34 at multiple radial positions, and the clamp 30 is connected to the roller 3 and is used to fix the end of the fin tube.

[0032] Based on the above technical solution, the drum 3 also includes a main shaft 31 and an end plate 33. The two ends of the arc plate 34 are respectively slidably connected to the end plate 33. The end plate 33 is fixed relative to the main shaft 31. The main shaft 31 is rotatably connected to the frame 4.

[0033] Preferably, the first motor 1 drives the input shaft of the gearbox 2 to rotate via a synchronous belt, and the output shaft 21 of the gearbox 2 is fixedly connected to the main shaft 31 .

[0034] In one embodiment, if Figure 5 , Figure 6 and Figure 8 As shown, the diameter-changing mechanism includes a chuck 32 , a chuck body 321 of the chuck 32 is fixedly connected to the spindle 31 and / or the end plate 33 , and a clamping claw 322 of the chuck 32 is connected to the arc plate 34 and drives the arc plate 34 to move radially.

[0035] Based on the above technical solution, the diameter-changing mechanism also includes a circular tube 35 and a cylinder 36. The cylinder 36 is fixedly connected to the chuck 32. The cylinder 36 is inserted into the circular tube 35 and there is a gap with the inner wall of the circular tube 35. The outer side surface of the circular tube 35 contacts the side of the arc plate 34 close to the rotating axis.

[0036] When the diameter is changed, the wrench insertion hole of the chuck 32 is located outside the end plate 33, and the wrench insertion hole is rotated with a wrench, thereby driving all the claws 322 to move radially equidistantly. When the worker rotates the wrench insertion hole, it is necessary to rotate the wrench insertion holes of different chucks 32 at both ends in sequence. When the worker rotates the first chuck 32, the distance between the claw 322 of the first chuck 32 and the claw 322 of another chuck 32 and the axis of the chuck 32 is no longer equal, and the circular tube 35 is driven by the claw 322 to tilt and is no longer parallel to the rotation axis. Due to the gap between the circular tube 35 and the cylinder 36, the circular tube 35 and the cylinder 36 avoid extrusion deformation and structural damage. At the same time, since the arc plate 34 is not directly driven by the claw 322, it will not tilt to the rotation axis, and it also avoids the arc plate 34 from being damaged by the sequential movement of the claws 322 at both ends and the movement distance error.

[0037] It should be noted that, due to the self-locking function of the chuck 32, the claws 322 are directly fixed after the diameter is changed.

[0038] The claws 322 of the chuck 32 may be driven by an automatic method such as electric, pneumatic or hydraulic, in addition to the manual drive mentioned above.

[0039] In one embodiment, if Figure 3 and Figure 4 As shown, the diameter-changing mechanism includes an adjusting block 37, an adjusting bolt 38 and a fixing screw 39. The end plate 33 is formed with a first through hole 330. The adjusting bolt 38 radially passes through the first through hole 330 and is rotatably connected to the end plate 33. The adjusting block 37 is inserted into the first through hole 330 and is slidably connected to the first through hole 330. The fixing screw 39 passes through the adjusting block 37 and is threadedly connected to the arc plate 34.

[0040] On the basis of the above technical solution, when the arc plate 34 is fixed to the end plate 33 , two ends of the end plate 33 are in contact with the arc plate 34 and the adjustment block 37 respectively.

[0041] When changing the diameter, first turn the fixing screw 39 to disengage the arc plate 34, so that the arc plate 34 can freely move in a straight line along the radial direction. Then turn the adjusting bolts 38 at both ends respectively, and the adjusting bolts 38 drive the adjusting block 37 to move radially in the first through hole 330. After the adjusting blocks 37 at both ends are adjusted to the same radius, slide the arc plate 34 radially to align the threaded hole at the end of the arc plate 34 with the through hole of the adjusting block 37. After that, use the fixing screw 39 to pass through the through hole of the adjusting block 37 and then threadedly connect with the threaded hole at the end of the arc plate 34 to fix the adjusting block 37 to the arc plate 34.

[0042] It should be noted that the adjusting bolt 38 and the threaded hole of the adjusting block 37 fix the position of the adjusting block 37 after rotation through thread self-locking.

[0043] Among them, an adjustment block 37 is fixed to one or two arc plates 34, such as Figure 4 As shown, the fixing screws 39 at both ends of the adjustment block 37 are fixed to different arc plates 34 respectively.

[0044] It should be noted that Figure 3 Only part of the adjustment block 37 is shown.

[0045] In an embodiment not shown in the figure, the diameter-changing mechanism includes a fixed threaded hole and a first screw, the two ends of the circular arc plate 34 are respectively formed with fixed threaded holes, the end plate 33 is formed with multiple groups of fixed through holes, each group of fixed through holes is arranged in a straight line along the radial direction, and the first screw passes through the fixed through hole and is threadedly connected with the fixed threaded hole to fix the circular arc plate 34. The fixed threaded hole is coaxial with the first through hole of different radius, so as to change the distance of the rotating axis of the circular arc plate 34, thereby changing the radius of the drum 3.

[0046] On the basis of the above technical solution, the end plate 33 is formed with a radial slide groove 331 , and sliders 341 are respectively formed at both ends of the arc plate 34 . The sliders 341 are inserted into the slide groove 331 and are slidably connected with the slide groove 331 .

[0047] On the basis of the above technical solution, it further comprises a limit block 5 , which is located at the side of the drum 3 and moves linearly relative to the frame 4 , and the movement direction of the limit block 5 is parallel to the rotation axis of the drum 3 .

[0048] On the basis of the above technical solution, it also includes a screw rod 6, a nut 7, a second motor 8, a track 41 and a mounting frame 51, wherein the screw rod 6 is rotatably connected to the frame 4, the nut 7 is sleeved on the outside of the screw rod 6 and connected to the screw rod 6, the nut 7 is fixedly connected to the mounting frame 51, the mounting frame 51 is slidably connected to the track 41, the track 41 is fixedly connected to the frame 4, the housing of the second motor 8 is fixedly connected to the frame 4, the output shaft of the second motor 8 drives the screw rod 6 to rotate, and the limit block 5 is fixedly connected to the mounting frame 51; a through hole 50 is formed inside the limit block 5. Preferably, the axis of the through hole inside the limit block 5 is perpendicular to the rotation axis. Preferably, both the first motor 1 and the second motor 8 are servo motors, and the pitch of the fin tube is changed by changing the speed ratio of the output of the first motor 1 and the second motor 8.

[0049] On the basis of the above technical solution, it also includes a discharge door 9 and a bearing seat 10, the main shaft 31 is fixed to the inner ring of the bearing in the bearing seat 10, the two bearing seats 10 are respectively fixed to the frame 4 and the discharge door 9, the discharge door 9 is detachably connected to the frame 4, the discharge door 9 is fixed to the frame 4 by a fixing device, and the discharge door 9 moves relative to the frame 4 after the fixing device releases the fixation of the discharge door 9.

[0050] Based on the above technical solution, the width of the bearing seat 10 is smaller than the diameter of the end plate 33 .

[0051] In one embodiment, the discharge door 9 is fixed to the frame 4 by screws, and the bearing seat 10 is fixed to the discharge door 9 by screws.

[0052] In an embodiment not shown in the figure, a pushing device is provided below the discharge door 9, and the upper and lower ends of the pushing device are respectively fixedly connected to the discharge door 9 and the frame 4, thereby driving the discharge door 9 to move up and down. The pushing device can be a cylinder, a hydraulic cylinder or an electric push rod. A groove with the same shape as the lower end of the bearing seat 10 is formed above the discharge door 9, and the bearing seat 10 is inserted into the groove to limit the bearing seat 10 when the pipe is rolled.

[0053] On the basis of the above technical solution, it further comprises a support shaft 13 , and the support shaft 13 is detachably connected to the main shaft 31 .

[0054] On the basis of the above technical scheme, it also includes a pin shaft. The end of the main shaft 31 passes through the bearing seat 10 fixed to the unloading door 9 to form a second pin hole 310. The end of the main shaft 31 is formed with a radial blind hole 311. The second pin hole 310 and the blind hole 311 are connected. The outer diameter of the support shaft 13 is equal to the inner diameter of the blind hole 311. The support shaft 13 is formed with a first pin hole 130. After the support shaft 13 is inserted into the blind hole 311, the pin shaft passes through the first pin hole 130 and the second pin hole 310 to fix the support shaft 13 to the main shaft 31.

[0055] In one embodiment, one end of the support shaft 13 is inserted into the blind hole 311, and the other end is contacted and supported by the hook of the crane.

[0056] In one embodiment, one end of the support shaft 13 away from the blind hole 311 is fixedly connected to the support frame, and the support frame moves relative to the frame 4.

[0057] Based on the above technical solution, the clamp 30 includes a clamp plate 301 and a bolt 302 , the clamp plate 301 is fixedly connected to the bolt 302 , and the bolt 302 is threadedly connected to the drum 3 .

[0058] In one embodiment, if Figure 5 and Figure 6 As shown, at least one arc plate 34 is formed with a first threaded hole 342 , and the bolt 302 is threadedly connected to the first threaded hole 342 .

[0059] In one embodiment, if Figure 1 and Figure 2 As shown, a second threaded hole is formed on the side of one end plate 33, and the bolt 302 is threadedly connected to the second threaded hole.

[0060] Based on the above technical solution, the clamp 30 is a chuck, a universal clamp or a pneumatic clamp in the prior art.

[0061] Based on the above technical solution, a conveying device 11 is further included, and the conveying device 11 is located on the side of the roller 3. The conveying direction of the conveying device 11 is perpendicular or nearly perpendicular to the rotation axis of the roller 3. Preferably, the conveying device 11 is a roller conveyor.

[0062] On the basis of the above technical solution, pull-rope emergency stop switches 12 are respectively provided on both sides of the drum 3 , and the pull-rope emergency stop switches 12 are fixedly connected to the frame 4 .

[0063] During operation, the diameter of the drum 3 is first adjusted, that is, the distance between all the arc plates 34 and the rotating axis is adjusted by the diameter reducing mechanism.

[0064] Afterwards, the fin tube is placed on the conveying device 11 and conveyed toward the drum 3. After passing through the through hole 50 of the stop block 5, the fin tube contacts the outer side of the arc plate 34, and the end of the fin tube is fixed to the drum 3 using the clamp 30.

[0065] The first motor 1 drives the roller 3 to rotate in the forward direction, and the second motor 8 drives the limit block 5 to move along a straight line parallel to the rotation axis, and the straight fin tube is rolled into a spiral shape on the outer side of the roller 3. The speed of the tube rolling is changed by changing the rotation speed of the first motor 1, and the number of turns of the fin tube is changed by changing the number of turns of the output shaft of the first motor 1.

[0066] After the fin tube is rolled, the conveying device 11 and the limit block 5 stop moving, and the first motor 1 reverses and drives the roller 3 to move in the opposite direction for a certain angle to remove the resilience of the spiral fin tube.

[0067] After the resilience is removed, the support shaft 13 is inserted into the blind hole 311, and then the bearing seat 10 on the discharge door 9 is removed. After the discharge door 9 is separated or moved from the frame 4, the discharge door 9 no longer blocks the fin tube, and the support shaft 13 and the bearing seat 10 fixed to the frame 4 support the drum 3.

[0068] Afterwards, the drum 3 reduces its diameter, i.e., the arc plate 34 moves inward, so that a gap is formed between the arc plate 34 and the fin tube. The fin tube is driven to move axially along the rotating shaft to the outside of the support shaft 13, and the discharge door 9 is reset and the bearing seat 10 thereon is re-fixed.

[0069] The support shaft 13 is pulled out of the blind hole 311 , and the fin tube is removed from the support shaft 13 .

[0070] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A fin tube winding machine, characterized in that: include: A first motor (1), a roller (3), a frame (4) and a clamp (30), wherein the roller (3) rotates relative to the frame (4), the first motor (1) drives the roller (3) to rotate, the roller (3) comprises an arc plate (34) and a diameter-changing mechanism, a plurality of arc plates (34) are evenly arranged around the circumference, the diameter-changing mechanism is used to fix the arc plates (34) at a plurality of radial positions, and the clamp (30) is connected to the roller (3) and is used to fix the end of the fin tube.

2. The fin tube winding machine according to claim 1, characterized in that: The roller (3) further comprises a main shaft (31) and an end plate (33); both ends of the arc plate (34) are respectively slidably connected to the end plate (33); the position of the end plate (33) is fixed relative to the main shaft (31); and the main shaft (31) is rotatably connected to the frame (4).

3. The fin tube winding machine according to claim 2, characterized in that: The diameter-changing mechanism comprises an adjusting block (37), an adjusting bolt (38) and a fixing screw (39); the end plate (33) is formed with a first through hole (330); the adjusting bolt (38) passes through the first through hole (330) in the radial direction and is rotatably connected to the end plate (33); the adjusting bolt (38) passes through the adjusting block (37) and is threadedly connected to the adjusting block (37); the adjusting block (37) is inserted into the first through hole (330) and is slidably connected to the first through hole (330); and the fixing screw (39) passes through the adjusting block (37) and is threadedly connected to the arc plate (34).

4. The fin tube winding machine according to claim 2, characterized in that: The end plate (33) is formed with a radial sliding groove (331), and sliding blocks (341) are respectively formed at both ends of the arc plate (34), and the sliding blocks (341) are inserted into the sliding groove (331) and are slidably connected to the sliding groove (331).

5. The fin tube winding machine according to claim 1, characterized in that: It also comprises a limit block (5), which is located on the side of the drum (3) and moves linearly relative to the frame (4), and the movement direction of the limit block (5) is parallel to the rotation axis of the drum (3).

6. The fin tube winding machine according to claim 5, characterized in that: It also comprises a screw rod (6), a nut (7), a second motor (8), a track (41) and a mounting frame (51); the screw rod (6) is rotatably connected to the frame (4); the nut (7) is sleeved on the outside of the screw rod (6) and connected to the screw rod (6); the nut (7) is fixedly connected to the mounting frame (51); the mounting frame (51) is slidably connected to the track (41); the track (41) is fixedly connected to the frame (4); the housing of the second motor (8) is fixedly connected to the frame (4); the output shaft of the second motor (8) drives the screw rod (6) to rotate; the limit block (5) is fixedly connected to the mounting frame (51); and a through hole (50) is formed inside the limit block (5).

7. The fin tube winding machine according to claim 2, characterized in that: It also includes a discharge door (9) and a bearing seat (10), the main shaft (31) is fixed to the inner ring of the bearing in the bearing seat (10), the two bearing seats (10) are respectively fixed to the frame (4) and the discharge door (9), the discharge door (9) and the frame (4) are detachably connected, the discharge door (9) is fixed to the frame (4) by a fixing device, and the discharge door (9) moves relative to the frame (4) after the fixing device releases the fixing of the discharge door (9); the width of the bearing seat (10) is smaller than the diameter of the end plate (33).

8. The fin tube winding machine according to claim 7, characterized in that: It also includes a pin shaft and a support shaft (13), wherein the support shaft (13) is detachably connected to the main shaft (31), and a second pin hole (310) is formed at the end of the main shaft (31) after passing through a bearing seat (10) fixed to a discharge door (9), and a radial blind hole (311) is formed at the end of the main shaft (31), and the second pin hole (310) and the blind hole (311) are connected, and the outer diameter of the support shaft (13) is equal to the inner diameter of the blind hole (311), and a first pin hole (130) is formed on the support shaft (13), and after the support shaft (13) is inserted into the blind hole (311), the pin shaft passes through the first pin hole (130) and the second pin hole (310) to fix the support shaft (13) to the main shaft (31).

9. The fin tube winding machine according to claim 1, characterized in that: The clamp (30) comprises a clamping plate (301) and a bolt (302); the clamping plate (301) is fixedly connected to the bolt (302); and the bolt (302) is threadedly connected to the roller (3).

10. The fin tube winding machine according to claim 1, characterized in that: It also comprises a conveying device (11), wherein the conveying device (11) is located on the side of the drum (3).

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