Bending equipment for spiral flat tube of heat exchanger of compressor

Abstract

The utility model belongs to the technical field of heat exchanger accessory machining, and particularly relates to compressor heat exchanger spiral flat pipe bending equipment which comprises a bottom plate, a transmission box is fixedly installed on the top face, close to the left side, of the bottom plate, a motor is installed on the left side wall of the transmission box, and a bending shaft is rotationally connected to the right side wall of the transmission box. A positioning hole is formed in the end face of the bending shaft, a fixing assembly is arranged in the positioning hole, a mounting plate is arranged on the bottom plate, a guide roller is rotatably connected to the side wall of the mounting plate, a connecting plate is slidably connected to the top face of the bottom plate, a limiting roller is rotatably connected to the side wall of the connecting plate, and a fixing plate is assembled on the front side wall of the connecting plate. A material guiding assembly is arranged on the top face of the fixing plate. According to the spiral bending device, the bending position of the copper pipe can be limited and fixed, stress balance of the copper pipe is guaranteed, and meanwhile efficient material guiding can be achieved in the spiral bending process.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchanger accessories processing, and specifically relates to a compressor heat exchanger spiral flat tube bending device. Background Art

[0002] The spiral flat tube design used in heat exchangers is often used to increase heat transfer efficiency and surface area, particularly in heat exchange between liquids or gases. This design allows for efficient heat transfer between the inside and outside of the tube, and is commonly used in industrial heating or cooling processes. The spiral flat tubes are typically made of copper, which allows for efficient heat transfer. During fabrication, the copper tubes are typically bent into the desired spiral shape using a tube bender.

[0003] Many of the existing pipe bending machines bend one end of the copper pipe into a right angle and then insert the bent end into the hollow shaft of the pipe bending machine. However, during the bending process, there is generally no fixed structure for the right-angle bend of the copper pipe, which makes the copper pipe easily deformed or torn due to uneven force when spirally bending. In addition, some equipment requires holding the copper pipe to assist in loading, which has poor stability and large precision errors, making it unfavorable for practical application. Utility Model Content

[0004] The purpose of this utility model is to provide a compressor heat exchanger spiral flat tube bending equipment, which can limit and fix the bending position of the copper tube to ensure its balanced force, and at the same time, realize efficient material guiding during the spiral bending process.

[0005] The technical solutions adopted in this application are as follows:

[0006] A compressor heat exchanger spiral flat tube bending equipment includes a base plate, a transmission box is fixedly installed on the top surface of the base plate near the left side, a motor is installed on the left side wall of the transmission box, a bending shaft is rotatably connected to the right side wall of the transmission box, a positioning hole is opened on the end face of the bending shaft, a fixing component is arranged in the positioning hole, a mounting plate is arranged on the base plate, a guide roller is rotatably connected to the side wall of the mounting plate, a connecting plate is slidably connected to the top surface of the base plate, a limiting roller is rotatably connected to the side wall of the connecting plate, a fixing plate is assembled on the front side wall of the connecting plate, and a material guide component is arranged on the top surface of the fixing plate.

[0007] The fixing assembly includes a top block arranged in a positioning hole, the side wall of the top block is fixedly connected to a support plate, the support plate is L-shaped, a screw rod is fixedly connected to the center of the end face of the bending shaft, a through hole corresponding to the screw rod is opened on the side wall of the support plate, a nut is threadedly connected to the side wall of the screw rod, and the nut is against the support plate.

[0008] The side wall of the support plate is fixedly connected with a positioning rod, the end surface of the bending shaft is provided with an arc groove, and the positioning rod is adapted to the arc groove.

[0009] The material guide assembly includes a groove provided on the top surface of the fixed plate, a screw is rotatably connected in the groove, one end of the screw passes through the fixed plate and is fixedly connected to a rotating wheel, a screw sleeve is threadedly connected to the side wall of the screw, and a limiting ring is fixedly connected to the top surface of the screw sleeve, the limiting ring is open, and a plurality of spherical grooves are provided on the inner wall of the limiting ring, a first ball is movably connected in the spherical groove, and an adjustment assembly is provided on the inner side of the limiting ring.

[0010] The adjustment assembly includes a bolt threadedly connected to the side wall of the limiting ring, the bottom end of the bolt is rotatably connected to an arc plate, and the side wall of the arc plate close to the center of the limiting ring is movably connected to a plurality of second balls.

[0011] The top surface of the bottom plate is fixedly connected with an electric slide rail, the side wall of the electric slide rail is slidably connected with a slider, and the bottom surface of the connecting plate is fixedly connected with the slider.

[0012] The technical effects achieved by this utility model are:

[0013] The present invention provides a practical compressor heat exchanger spiral flat tube bending device. Through the mutual cooperation among the base plate, transmission box, bending shaft, guide roller, fixing component and material guide component, when the right-angle bent end of the copper tube is inserted into the positioning hole, the fixing component can be used to limit and fix it to ensure that the copper tube is subjected to balanced force; secondly, by adjusting the position of the limiting ring to correspond to different positions of the limiting roller, the copper tubes with different diameters can be bent and guided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of this practical embodiment;

[0015] Figure 2 Schematic diagram of the test structure of this practical embodiment;

[0016] Figure 3 It is a three-dimensional diagram of the material guide assembly of this practical embodiment;

[0017] Figure 4 This is a schematic cross-sectional view of the material guide assembly of this practical embodiment;

[0018] Figure 5 This is a practical embodiment Figure 1 A magnified view of point A in the figure;

[0019] Figure 6 This is a practical embodiment Figure 4 Enlarged view of point B in .

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Base plate; 2. Transmission box; 3. Motor; 4. Bending shaft; 5. Positioning hole; 6. Top block; 7. Support plate; 8. Screw; 9. Nut; 10. Positioning rod; 11. Arc groove; 12. Mounting plate; 13. Guide roller; 14. Connecting plate; 15. Limiting roller; 16. Electric slide rail; 17. Slider; 18. Fixed plate; 19. Groove; 20. Screw; 21. Screw sleeve; 22. Limiting ring; 23. Spherical groove; 24. First ball; 25. Arc plate; 26. Bolt; 27. Second ball; 28. Rotor. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of this utility more clear, the utility is described in detail below with reference to the embodiments. It should be understood that the following text is only used to describe one or several specific implementation methods of this utility and does not strictly limit the scope of protection specifically requested by this utility.

[0023] like Figures 1-6 As shown, a compressor heat exchanger spiral flat tube bending equipment includes a base plate 1, a transmission box 2 is fixedly installed on the top surface of the base plate 1 near the left side, a motor 3 is installed on the left side wall of the transmission box 2, and a bending shaft 4 is rotatably connected to the right side wall of the transmission box 2. A positioning hole 5 is opened on the end face of the bending shaft 4, and a fixing component is arranged in the positioning hole 5. A mounting plate 12 is arranged on the base plate 1, and a guide roller 13 is rotatably connected to the side wall of the mounting plate 12. A driving structure is also provided under the base plate 1, and the driving structure is connected to the mounting plate 12 for driving the mounting plate 12 to rise, fall and translate. In addition, the driving method used in the existing pipe bending machine is not described in detail in this scheme. A connecting plate 14 is slidably connected to the top surface of the base plate 1, and a limiting roller 15 is rotatably connected to the side wall of the connecting plate 14. A fixed plate 18 is assembled on the front side wall of the connecting plate 14, and a material guide component is arranged on the top surface of the fixed plate 18.

[0024] like Figure 1 and Figure 5 As shown, the fixing assembly includes a top block 6 arranged in the positioning hole 5, the side wall of the top block 6 is fixedly connected to a support plate 7, the support plate 7 is L-shaped, and a screw rod 8 is fixedly connected to the center of the end face of the bending shaft 4. A through hole corresponding to the screw rod 8 is opened on the side wall of the support plate 7, and a nut 9 is threadedly connected to the side wall of the screw rod 8, and the nut 9 is against the support plate 7.

[0025] A positioning rod 10 is fixedly connected to the side wall of the support plate 7 , and an arc groove 11 is formed on the end surface of the bending shaft 4 , and the positioning rod 10 is adapted to the arc groove 11 .

[0026] Among them, the positioning hole 5 and the top block 6 are both heterogeneous structures. The end face of the top block 6 close to the copper tube can be set to an arc shape, which is convenient for fitting the copper tube and avoiding the force being concentrated at the same position when in contact with the copper tube, which easily causes deformation of the copper tube; in addition, the arc groove 11 is distributed along 90° to limit the support plate 7, and the positioning rod 10 can only move within the arc groove 11 and cannot be separated from the arc groove 11. In addition, the diameter of the through hole is larger than the diameter of the screw rod 8, and it can move on the screw rod 8.

[0027] like Figure 2-Figure 6 As shown, the material guide assembly includes a groove 19 provided on the top surface of the fixed plate 18, a screw 20 is rotatably connected in the groove 19, one end of the screw 20 passes through the fixed plate 18 and is fixedly connected to a runner 28, a screw sleeve 21 is threadedly connected to the side wall of the screw 20, and a limit ring 22 is fixedly connected to the top surface of the screw sleeve 21, the limit ring 22 is open, and a plurality of spherical grooves 23 are provided on the inner wall of the limit ring 22, a first ball 24 is movably connected in the spherical groove 23, and an adjustment assembly is provided on the inner side of the limit ring 22.

[0028] Specifically, the side walls of the guide roller 13 and the limiting roller 15 are provided with a plurality of annular grooves, and the diameters of the annular grooves are different, so that they can be suitable for copper tubes of different diameters; in addition, when the guide roller 13 and the limiting roller 15 are detachable, they can be easily replaced to meet the processing requirements of various spiral flat tubes.

[0029] like Figure 6 As shown, the adjustment assembly includes a bolt 26 threadedly connected to the side wall of the limiting ring 22, the bottom end of the bolt 26 is rotatably connected to the arc plate 25, and the side wall of the arc plate 25 close to the center of the limiting ring 22 is movably connected to a plurality of second balls 27.

[0030] Among them, by setting the first ball 24 and the second ball 27, the friction between the copper tube can be reduced, and the copper tube is more stable when moving. At the same time, the first ball 24 and the second ball 27 form a ring distribution, which can effectively wrap the copper tube and further enhance the transportation accuracy.

[0031] like Figure 1 and Figure 2 As shown, the top surface of the base plate 1 is fixedly connected to an electric slide rail 16, the side wall of the electric slide rail 16 is slidably connected to a slider 17, and the bottom surface of the connecting plate 14 is fixedly connected to the slider 17. The translation mode of the electric slide rail 16 and the slider 17 is an existing mature technology and will not be described in detail in this solution.

[0032] The working principle of the utility model is as follows: first, the rotating wheel 28 drives the screw 20 to rotate. After the screw 20 drives the limiting ring 22 to move to the appropriate position through the screw sleeve 21, one end of the copper tube bent at a right angle is inserted into the positioning hole 5, and the side wall of the copper tube is stuck in the limiting ring 22. Then, the supporting plate 7 is rotated to drive the top block 6 to align with the positioning hole 5 and insert it. Then, the nut 9 is tightened to fix the top block 6, so as to achieve the effect of fixing the direct bending position of the copper tube, avoiding uneven force during spiral bending, causing deformation, tearing and other problems, thereby improving its bending stability and accuracy, and then rotating the bolt 26 to drive the arc plate 25 to move downward and resist the copper tube for limiting support of the copper tube;

[0033] When performing spiral pipe bending, the guide roller 13 rises and presses against the copper tube, and then the guide roller 13 and the limiting roller 15 move synchronously to the left. The guide roller 13 is used to squeeze the copper tube so that it fits tightly with the bending shaft 4 to ensure bending accuracy. The limiting roller 15 moves synchronously with the guide roller 13, which can not only ensure the stability of the guide, but also promote the improvement of bending accuracy.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this application shall be implemented in accordance with conventional means in the art unless otherwise specified or limited.

Claims

1. A compressor heat exchanger spiral flat tube bending device, characterized by: The invention comprises a bottom plate (1), a transmission box (2) is fixedly installed on the top surface of the bottom plate (1) near the left side, a motor (3) is installed on the left side wall of the transmission box (2), a bending shaft (4) is rotatably connected to the right side wall of the transmission box (2), a positioning hole (5) is provided on the end surface of the bending shaft (4), a fixing component is arranged in the positioning hole (5), a mounting plate (12) is arranged on the bottom plate (1), a guide roller (13) is rotatably connected to the side wall of the mounting plate (12), a connecting plate (14) is slidably connected to the top surface of the bottom plate (1), a limiting roller (15) is rotatably connected to the side wall of the connecting plate (14), a fixing plate (18) is assembled on the front side wall of the connecting plate (14), and a material guide component is arranged on the top surface of the fixing plate (18).

2. The spiral flat tube bending equipment for a compressor heat exchanger according to claim 1, characterized in that: The fixing assembly comprises a top block (6) arranged in a positioning hole (5); a side wall of the top block (6) is fixedly connected to a support plate (7); the support plate (7) is L-shaped; a screw rod (8) is fixedly connected to the center of the end face of the bending shaft (4); a through hole corresponding to the screw rod (8) is opened on the side wall of the support plate (7); a nut (9) is threadedly connected to the side wall of the screw rod (8); and the nut (9) abuts against the support plate (7).

3. The compressor heat exchanger spiral flat tube bending device according to claim 2, characterized in that: The side wall of the support plate (7) is fixedly connected with a positioning rod (10), the end surface of the bending shaft (4) is provided with an arc groove (11), and the positioning rod (10) is adapted to the arc groove (11).

4. The compressor heat exchanger spiral flat tube bending equipment according to claim 1, characterized in that: The material guide assembly includes a groove (19) provided on the top surface of the fixed plate (18), a screw (20) is rotatably connected in the groove (19), one end of the screw (20) passes through the fixed plate (18) and is fixedly connected to a rotating wheel (28), a screw sleeve (21) is threadedly connected to the side wall of the screw (20), and a limiting ring (22) is fixedly connected to the top surface of the screw sleeve (21), the limiting ring (22) is open, and a plurality of spherical grooves (23) are provided on the inner wall of the limiting ring (22), a first ball (24) is movably connected in the spherical groove (23), and an adjustment assembly is provided on the inner side of the limiting ring (22).

5. The compressor heat exchanger spiral flat tube bending device according to claim 4, characterized in that: The adjustment assembly includes a bolt (26) threadedly connected to the side wall of the limiting ring (22), the bottom end of the bolt (26) is rotatably connected to an arc plate (25), and the side wall of the arc plate (25) close to the center of the limiting ring (22) is movably connected to a plurality of second balls (27).

6. The compressor heat exchanger spiral flat tube bending equipment according to claim 1, characterized in that: The top surface of the base plate (1) is fixedly connected to an electric slide rail (16), the side wall of the electric slide rail (16) is slidably connected to a slider (17), and the bottom surface of the connecting plate (14) is fixedly connected to the slider (17).

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