A combined coil device
The automated insertion and movement of the mandrel is achieved by using a winding machine and air supply device in a combined coiling equipment, which solves the problems of high labor intensity and large space requirements in copper tube mandrel insertion, and improves production efficiency and automation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN TONGYI THERMAL EQUIP
- Filing Date
- 2026-01-23
- Publication Date
- 2026-08-04
AI Technical Summary
Existing copper tube mandrel operation is labor-intensive, has difficulty in ensuring accuracy, and has low production efficiency. Furthermore, automated equipment requires a large amount of space, making it difficult to apply in small and medium-sized factories.
Design a combined coiling device that automates the insertion and movement of the mandrel through a winding machine, an air supply device, and a slider system. Combined with high-pressure air propulsion, it simplifies the tube threading process and reduces site occupation.
It achieves highly efficient and automated pipe threading, reduces labor intensity, improves production efficiency, and is suitable for small and medium-sized factories with limited space.
Smart Images
Figure CN121551452B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of pipe bending machines, and more specifically, to a combined pipe coiling device. Background Technology
[0002] Copper tubes, as an indispensable core component in heat exchangers, water heaters, and other thermal equipment, undertake crucial heat transfer functions, and their performance directly affects the heat exchange efficiency and operational stability of the entire equipment. Depending on the structural design and usage scenario of different equipment, the cross-sectional shape of copper tubes can be flexibly adopted as circular or elliptical to adapt to the installation space and heat exchange requirements within the equipment. To further improve heat conduction and increase the contact area between the copper tube and the medium, in actual production, copper tubes are usually bent into complex shapes such as spirals and U-shapes. This processing must be completed using a tube bending machine.
[0003] Before copper tubes enter the bending machine, a key pretreatment step is to insert a mandrel into the tube. The mandrel's end is designed with an arc shape, and its core function is to provide internal support during the bending process, effectively resisting the pressure of bending stress on the tube wall, avoiding defects such as wrinkles, dents, and deformation, and ensuring the dimensional accuracy and appearance quality of the bent tube.
[0004] However, due to limitations in production processes, the length of a single copper tube and mandrel is typically quite long, and the mandrel is mostly fixed in place, leading to significant drawbacks in the tube threading operation. Currently, this process is mostly done manually. Operators need to precisely align the axes of the copper tube and mandrel, and then manually insert the copper tube segment by segment into the mandrel. This process also requires long-distance back-and-forth movement to adjust the position, which is not only labor-intensive and cumbersome, but also makes it difficult to guarantee alignment accuracy and seriously affects production efficiency. If an automated tube threading device is used, an extra-long operating table must be set up to accommodate the length of the mandrel and copper tube, which places extremely high demands on the space of the production site, making it difficult for most small and medium-sized factories to meet. Therefore, an automated tube threading device with a small footprint can be designed. Summary of the Invention
[0005] The purpose of this invention is to provide a combined coiling device that can efficiently and automatically thread pipes and has low space requirements.
[0006] This invention is achieved through the following technical solution: The combined coiling device of this invention includes a horizontally arranged base plate, a coiling machine located at one end above the base plate, a support base located at the other end above the base plate, a first slider slidably disposed on the support base, a storage box detachably disposed between the coiling machine and the support base, a fixed plate vertically disposed on the side of the first slider near the storage box, a first through hole and a second through hole opened on the fixed plate, a steel cable slidably disposed in the first through hole, a core plate connected to the end of the steel cable near the coiling machine, a winding machine disposed on the first slider, and an air supply device connected to the second through hole; the storage box is an elongated structure with an open top, the height of the upper end of the storage box is the same as the height of the first through hole, the storage box is used to place flat tubes, multiple flat tubes are stacked vertically, the length direction of the flat tubes is parallel to the length direction of the base plate, and the movement direction of the first slider is parallel to the length direction of the flat tubes.
[0007] Furthermore, the winding machine includes a first motor fixedly disposed inside the first slider, and a winding roller disposed on the output shaft of the first motor; the steel cable is wound on the winding roller.
[0008] Furthermore, the fixing plate has an annular fixing ring on the side near the storage box; both the first through hole and the second through hole are located in the fixing ring; when the end of the flat tube abuts against the fixing plate, the end of the flat tube is located in the fixing ring.
[0009] Furthermore, the gas supply device includes a gas source and a gas pipe connected to the gas source; the gas pipe is connected to the end of the second through hole away from the coiling machine.
[0010] Furthermore, the storage bin has a pair of vertically arranged third through holes on its side wall; it also includes a lifting device for driving the flat tube in the storage bin to rise and fall; the lifting device includes a pair of horizontally arranged lifting plates in the storage bin, and a power component for driving the lifting plates to rise and fall; one of the lifting plates is slidably disposed in one of the third through holes.
[0011] Furthermore, the power assembly includes a vertically arranged screw rod threadedly connected to the lifting plate, and a second motor connected to the screw rod; the screw rod is rotatably connected to the base plate, and the second motor is fixedly mounted on the underside of the base plate.
[0012] Furthermore, a pair of baffles are provided directly above the storage box, and the pair of baffles are respectively located on both sides of the storage box; the pair of baffles are fixedly connected to the bottom plate through a support plate, and the upper end of the screw is rotatably connected to the baffles.
[0013] Furthermore, the base plate is also provided with multiple side panels, which are distributed in a C-shape and are attached to the side wall of the storage box.
[0014] Furthermore, it also includes a pushing device for moving the flat tube along its length; the pushing device includes a guide rail on the base plate, a second slider slidably disposed on the guide rail, a bracket fixedly disposed on the second slider, a telescopic cylinder vertically disposed on the upper end of the bracket, and a lever fixedly disposed on the movable end of the telescopic cylinder; the telescopic cylinder is disposed directly above the storage box, and the core plate has a vertically disposed insertion hole at one end near the coiling machine; The lever can be inserted into the socket.
[0015] The technical solution of this invention has at least the following advantages and beneficial effects: In the combined coiling equipment of this invention, a long, flat tube is first placed into a storage box, and then the storage box is transferred to a base plate. During bending, the flat tube is lifted upwards, and the winding machine pulls a steel cable to pull the core plate to the fixed plate, making the core plate horizontal. Then, the first slider pushes the fixed plate and the core plate towards the flat tube, inserting the core plate into the flat tube. The air supply device then sends high-pressure air into the second through hole, pushing the core plate in the flat tube towards the bending machine until the end of the core plate protrudes from the flat tube. The second slider then continues to push the core plate and the flat tube into the bending machine for bending. After bending, the winding machine pulls the core plate back to the fixed plate, and the above steps are repeated. This eliminates the need for cumbersome manual threading steps for ultra-long flat tubes and avoids the need for ultra-long equipment for automated threading, effectively reducing space occupation and improving the automation and efficiency of the bending process. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a combined coil device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the two states of the combined coil device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the three states of the combined coil device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the base plate portion provided in an embodiment of the present invention; Figure 5 for Figure 4 Another structural diagram from another perspective; Figure 6 This is a schematic diagram of the structure of the storage box and the flat tube provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the storage box provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the core board provided in an embodiment of the present invention; Figure 9 for Figure 4 Enlarged view of part A in the middle.
[0017] Icons: 10-Base plate, 11-Roller, 12-Support base, 13-First slider, 14-Storage box, 141-Third through hole, 142-Flat tube, 15-Fixing plate, 151-First through hole, 152-Second through hole, 153-Fixing ring, 16-Steel cable, 17-Core board, 171-Insertion hole, 18-Winding roller, 19-Air pipe, 110-Baffle, 111-Surrounding plate, 112-Guide rail, 20-Lifting device, 21-Lifting plate, 22-Screw, 23-Second motor, 30-Pushing device, 31-Second slider, 32-Bracket, 33-Telescopic cylinder, 34-Lever. Detailed Implementation
[0018] Example The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 - Appendix Figure 9 As shown, the combined coiling equipment of this embodiment includes a horizontally arranged base plate 10, a coiling machine 11 disposed above one end of the base plate 10, a support base 12 disposed above the other end of the base plate 10, a first slider 13 slidably disposed on the support base 12, a storage box 14 detachably disposed between the coiling machine 11 and the support base 12, a fixing plate 15 vertically disposed on the side of the first slider 13 near the storage box 14, a first through hole 151 and a second through hole 152 opened on the fixing plate 15, and a steel cable 1 slidably disposed in the first through hole 151. 6. A core plate 17 connected to the end of the steel cable 16 near the coiling machine 11, a winding machine mounted on the first slider 13, and an air supply device connected to the second through hole 152; the storage box 14 is a long strip structure with an open top, the height of the upper end of the storage box 14 is the same as the height of the first through hole 151, the storage box 14 is used to place flat tubes 142, multiple flat tubes 142 are stacked vertically, the length direction of the flat tubes 142 is parallel to the length direction of the base plate 10, and the moving direction of the first slider 13 is parallel to the length direction of the flat tubes 142. Specifically, in use, the long strip of flat tubes 142 is placed into the storage box 14 in advance, and then the storage box 14 is transferred to the base plate 10. When bending the tube, the flat tubes 142 are lifted upwards. At this time, the winding machine pulls the steel cable 16 to pull the core plate 17 to the fixed plate 15 (as shown in the attached figure). Figure 1 As shown), so that the core plate 17 is in a horizontal state, and then the first slider 13 pushes the fixing plate 15 and the core plate 17 toward the flat tube 142 (as shown in the attached figure). Figure 2As shown, the flat tube 142 can also move towards the core plate 17. The core plate 17 is inserted into the flat tube 142, and then the air supply device sends high-pressure air into the second through hole 152. The high-pressure air pushes the core plate 17 in the flat tube 142 towards the tube bending machine until the end of the core plate 17 passes through the flat tube 142. Then the second slider 31 continues to push the core plate 17 and the flat tube 142 into the tube bending machine for tube bending operation (as shown in the attached diagram). Figure 3 (As shown). After the tube bending is completed, the winding machine pulls the core plate 17 back to the fixed plate 15, and repeats the above steps. In this way, for the extra-long flat tube 142, there is no need for tedious manual tube threading steps, nor is it necessary to use extra-long equipment for automated tube threading. This can effectively reduce the space occupation, improve the automation process of tube bending, and improve the efficiency of tube bending.
[0019] The winding machine in this embodiment includes a first motor fixedly disposed inside the first slider 13, and a winding roller 18 disposed on the output shaft of the first motor; the steel cable 16 is wound around the winding roller 18. Specifically, by driving the winding roller 18 to rotate through the first motor, the steel cable 16 can be wound around the winding roller 18, thereby pulling the core plate 17 toward the fixed plate 15.
[0020] In this embodiment, the fixing plate 15 is provided with an annular fixing ring 153 on the side near the storage box 14; the first through hole 151 and the second through hole 152 are both provided in the fixing ring 153; when the end of the flat tube 142 abuts against the fixing plate 15, the end of the flat tube 142 is located in the fixing ring 153. Specifically, the fixing ring 153 can better fix the position of the core plate 17, so that the core plate 17 can be aligned with the flat tube 142. In this way, the core plate 17 can be better inserted into the flat tube 142. The core plate 17 is not a completely sealed structure in the flat tube 142, but by coating the surface of the core plate 17 with lubricating oil, the friction between the core plate 17 and the flat tube 142 can be effectively reduced. In this way, the instantaneous ejection of high-pressure gas can also effectively push the core plate 17 to move in the flat tube 142, so that the core plate 17 can pass out from the end of the flat tube 142. It should be noted that the first slider 13 can move on the support base 12, thereby pushing the core plate 17, flat tube 142, etc. to move. The movement of the first slider 13 itself can be driven by setting a linear motor on the first slider 13, or by using a structure such as a gear rack, a ball screw, etc.
[0021] The gas supply device in this embodiment includes a gas source and a gas pipe 19 connected to the gas source; the end of the gas pipe 19 is connected to the second through hole 152 away from the coiling machine 11. Specifically, the gas source is mainly a compressed gas cylinder or a gas compressor, which can instantly spray gas from the gas pipe 19, through the second through hole 152 and push the core plate 17 to move.
[0022] In this embodiment, the storage bin 14 has a pair of vertically arranged third through holes 141 on its side wall; it also includes a lifting device 20 for driving the flat tube 142 in the storage bin 14 to rise and fall; the lifting device 20 includes a pair of horizontally arranged lifting plates 21 in the storage bin 14, and a power component for driving the lifting plates 21 to rise and fall; one lifting plate 21 is slidably disposed in one of the third through holes 141. Specifically, the core plate 17 is inserted into the uppermost flat tube 142 each time, and then the flat tube 142 is bent, so the flat tube 142 needs to be continuously lifted upwards, and the height of a single lift is the thickness of one flat tube 142. An automated lifting device 20 can be used. The lifting plate 21 is attached to the lower side of the flat tube 142, and the power component can drive the lifting plate 21 to rise and fall, thereby driving the flat tube 142 to rise and fall.
[0023] The power assembly in this embodiment includes a vertically arranged screw 22 threadedly connected to the lifting plate 21, and a second motor 23 connected to the screw 22. The screw 22 is rotatably connected to the base plate 10, and the second motor 23 is fixedly mounted on the lower side of the base plate 10. Specifically, the second motor 23 can drive the screw 22 to rotate, thereby causing the lifting plate 21 to move vertically along the screw 22. The second motor 23 simultaneously drives a pair of screws 22 to rotate synchronously via a transmission mechanism such as a drive shaft and gears.
[0024] In this embodiment, a pair of baffles 110 are provided directly above the storage bin 14, with the baffles 110 respectively located on both sides of the storage bin 14. The baffles 110 are fixedly connected to the base plate 10 via a support plate, and the upper end of the screw 22 is rotatably connected to the baffles 110. Specifically, the baffles 110 can block the flat tube 142, preventing it from rolling off the sides after being pushed out of the storage bin 14. Furthermore, the baffles 110 can also support the upper end of the screw 22, making the rotation of the screw 22 more stable.
[0025] In this embodiment, the base plate 10 is also provided with a plurality of surrounding plates 111, which are arranged in a C-shape and are attached to the side wall of the storage box 14. Specifically, the surrounding plates 111 can position the storage box 14, allowing the storage box 14 to be easily and quickly snapped into place directly below a pair of baffles 110.
[0026] In this embodiment, a pushing device 30 is also included to push the flat tube 142 to move along its length direction. The pushing device 30 includes a guide rail 112 on the base plate 10, a second slider 31 slidably disposed on the guide rail 112, a bracket 32 fixedly disposed on the second slider 31, a telescopic cylinder 33 vertically disposed on the upper end of the bracket 32, and a lever 34 fixedly disposed on the movable end of the telescopic cylinder 33. The telescopic cylinder 33 is disposed directly above the storage box 14, and the core plate 17 is provided with a vertically disposed insertion hole 171 at one end near the coiling machine 11. The lever 34 can be inserted into the insertion hole 171. The specific function of the pushing device 30 is to assist in moving the core plate 17 and the flat tube 142. Its operating principle is as follows: when the flat tube 142 needs to be attached to the fixed plate 15, the telescopic cylinder 33 can be used to move the lever 34 downwards, which then rests against the end of the flat tube 142. Then, the second slider 31 moves on the guide rail 112, thereby assisting in pressing the flat tube 142 against the fixed plate 15 and improving the sealing effect. After the air supply device blows the core plate 17 out of the end of the flat tube 142, the lever 34 at the end of the telescopic cylinder 33 is inserted into the insertion hole 171 on the core plate 17. Then, the second slider 31 moves on the guide rail 112, assisting in moving the core plate 17 to the tube bending machine. It should be noted that the movement of the second slider 31 itself can be driven by a linear motor installed on the second slider 31, or by a gear rack, ball screw, or other similar structure.
[0027] In summary, in this embodiment of the combined coiling equipment, the long strip flat tube 142 is placed into the storage box 14 before use. Then, the storage box 14 is transferred to the base plate 10. When bending the tube, the flat tube 142 is lifted upwards. At this time, the winding machine pulls the steel cable 16 to pull the core plate 17 to the fixed plate 15, so that the core plate 17 is in a horizontal state. Then, the first slider 13 pushes the fixed plate 15 and the core plate 17 toward the flat tube 142, inserting the core plate 17 into the flat tube 142. Then, the air supply device sends high-pressure air into the second through hole 152. The high-pressure air pushes the core plate 17 in the flat tube 142 toward the tube bending machine until the end of the core plate 17 passes through the flat tube 142. Then, the second slider 31 continues to push the core plate 17 and the flat tube 142 into the tube bending machine for bending operation. After the tube bending is completed, the winding machine pulls the core plate 17 back to the fixed plate 15, and repeats the above steps. In this way, for the extra-long flat tube 142, there is no need for tedious manual tube threading steps, nor is it necessary to use extra-long equipment for automated tube threading. This can effectively reduce the space occupation, improve the automation process of tube bending, and improve the efficiency of tube bending.
[0028] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A combined coil device, characterized by: The device includes a horizontally arranged base plate, a coiling machine located at one end above the base plate, a support base located at the other end above the base plate, a first slider slidably mounted on the support base, a storage box detachably located between the coiling machine and the support base, a fixed plate vertically mounted on the side of the first slider near the storage box, a first through hole and a second through hole opened on the fixed plate, a steel cable slidably mounted in the first through hole, a core plate connected to the end of the steel cable near the coiling machine, a winding machine mounted on the first slider, and an air supply device connected to the second through hole. The storage box is a long strip structure with an opening at the top. The height of the top of the storage box is the same as the height of the first through hole. The storage box is used to place flat tubes. Multiple flat tubes are stacked vertically. The length direction of the flat tubes is parallel to the length direction of the base plate. The moving direction of the first slider is parallel to the length direction of the flat tubes. The fixing plate has an annular fixing ring on the side near the storage box; both the first through hole and the second through hole are located in the fixing ring; when the end of the flat tube abuts against the fixing plate, the end of the flat tube is located in the fixing ring; the air supply device includes an air source and an air pipe connected to the air source; the air pipe is connected to the end of the second through hole away from the coiling machine. The storage bin has a pair of vertically arranged third through holes on its side wall; it also includes a lifting device for driving the flat tube in the storage bin to rise and fall; the lifting device includes a pair of horizontally arranged lifting plates in the storage bin, and a power assembly for driving the lifting plates to rise and fall; one of the lifting plates is slidably disposed in one of the third through holes.
2. The combined coil device of claim 1, wherein: The winding machine includes a first motor fixedly disposed inside the first slider, and a winding roller disposed on the output shaft of the first motor. The steel cable is wound around the winding roller.
3. The combined coil device of claim 1, wherein: The power assembly includes a vertically arranged screw that is threadedly connected to the lifting plate, and a second motor connected to the screw; The screw is rotatably connected to the base plate, and the second motor is fixedly mounted on the underside of the base plate.
4. The combination coil apparatus of claim 3, wherein: A pair of baffles are provided directly above the storage box, and the pair of baffles are respectively located on both sides of the storage box; The pair of baffles are fixedly connected to the base plate via a support plate, and the upper end of the screw is rotatably connected to the baffle.
5. The combination coil apparatus of claim 1, wherein: The base plate is also provided with multiple side panels, which are distributed in a C-shape and are attached to the side wall of the storage box.
6. The combined coil equipment according to claim 1, characterized in that: It also includes a pushing device for moving the flat tube along its length; The pushing device includes a guide rail on the base plate, a second slider slidably mounted on the guide rail, a bracket fixedly mounted on the second slider, a telescopic cylinder vertically mounted on the upper end of the bracket, and a lever fixedly mounted on the movable end of the telescopic cylinder. The telescopic cylinder is located directly above the storage box, and the core plate has a vertically arranged insertion hole at one end near the coiling machine. The lever can be inserted into the socket.