An online unpowered winding device for aluminum tubes

Abstract

The present invention relates to the field of refrigerator heat exchanger production equipment, and more specifically, to an online unpowered winding device for aluminum tubes, including a back plate, a cushion block, a pressure plate, a baffle, an adjusting bolt, a locking nut and a groove wheel set, wherein the groove wheel set is composed of a groove wheel, a deep groove ball bearing, a hexagon socket bolt, a retaining ring, a sleeve, a slider and a standard cylindrical compression spring; a "V"-shaped groove is provided in the middle of the outer circle of the groove wheel, and a step hole is provided inside the groove wheel, and a retaining ring groove is provided at one end of the step hole, and two deep groove ball bearings are installed in the step hole. The online unpowered winding device for aluminum tubes of the present invention is suitable for the tail end of an aluminum tube straightening and blanking machine, and can realize online winding without manual supervision, saving labor, fully reducing the labor intensity of workers, and can well ensure the consistency of winding.

Description

Technical Field

[0001] The invention relates to the field of refrigerator heat exchanger production devices, and more specifically to an aluminum tube online unpowered winding device. Background Art

[0002] In the field of aluminum tube evaporators for household refrigerators, in order to facilitate the subsequent processing, transportation, assembly or molding needs, it is usually necessary to wind the straight aluminum tube that has been straightened and cut into a circular spring shape with a certain diameter. Patent Publication No. 208214007U discloses an aluminum tube winding device. The device disclosed in this patent is a conventional device for aluminum tube winding. A cylinder with a fixed diameter is installed on the output shaft of the reducer, and the reducer is driven by an electric motor, and the reducer drives the cylinder to rotate. A sleeve is installed on the round tube. When working, one end of the aluminum tube is manually inserted into the sleeve, and the power is turned on by stepping on the foot switch. The motor drives the reducer, and the reducer drives the cylinder to rotate. During the rotation of the cylinder, the aluminum tube is manually tightened by hand so that the aluminum tube is arranged and wound under the rotation of the cylinder, and finally forms a circular spring shape. However, in actual production, the use of the above equipment will have the following problems:

[0003] 1. During the rotation of the cylinder, the aluminum tubes need to be tightened manually and arranged along the side of the rotating cylinder, and the operation safety cannot be guaranteed;

[0004] 2. Since the diameter of the cylinder is fixed, the rebound of the aluminum tube during winding is closely related to the strength of the manual tightening of the aluminum tube. The diameters of the circles wound by different people are different. In addition, the production process is labor-intensive. After working for a long time, the diameter of the circle will also change. Therefore, the consistency of the product cannot be guaranteed.

[0005] 3. When designing and manufacturing the above-mentioned simple equipment, the diameter of the cylinder must be determined based on the coil diameter required by the product and the amount of springback during the coil forming process of the aluminum tube. The springback amount is closely related to the strength of the manual tightening of the aluminum tube and needs to be determined based on experience. Therefore, the design is difficult. Often, after the actual coil diameter is determined, there is an error between the actual coil diameter and the drawing requirements during the actual production process.

[0006] 4. Since the diameter of the cylinder is fixed, the coil diameter cannot be adjusted. When it is necessary to wind aluminum coils of different diameters, the cylinder needs to be replaced. The replacement process is complicated and time-consuming, affecting production efficiency.

[0007] 5. Since the simple equipment is driven by an electric motor, it consumes electricity during the production process, which is not conducive to energy saving and consumption reduction;

[0008] 6. In order to reduce the cost of simple equipment, ordinary motors are generally used for driving. Therefore, it is difficult to guarantee the number of rotations and stop position of the cylinder, which makes the operation difficult and the safety performance low.

[0009] 7. Due to design and processing requirements, the aluminum tube is first straightened and cut, and then coiled. After the coiling is completed, copper connecting pipes are welded at both ends of the aluminum tube or the tube mouth is expanded or shrunk. The three processes of straightening, cutting, coiling, and welding (or expanding and shrinking) require a total of 3 operators, with many transfer and handling operations, and serious waste of manpower.

[0010] 8. The winding process is a single-equipment single-station operation, which requires manual operation and cannot be achieved online. Summary of the invention

[0011] The purpose of the present invention is to overcome the shortcomings of the prior art and to design an online unpowered aluminum tube winding device which has the advantages of adjustable winding diameter, convenient adjustment, no power, no energy consumption, and no need for manual operation.

[0012] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0013] An online unpowered winding device for an aluminum tube, characterized in that it comprises a back plate, a cushion block, a pressure plate, a baffle, an adjusting bolt, a locking nut and a groove wheel set, wherein the groove wheel set is composed of a groove wheel, a deep groove ball bearing, a hexagon socket bolt, a retaining ring, a sleeve, a slider and a standard cylindrical compression spring; a "V"-shaped groove is provided in the middle of the outer circle of the groove wheel, the interior of which is a step hole, a retaining ring groove is provided at one end of the step hole, and two deep groove ball bearings are installed in the step hole; the retaining ring is installed in the retaining ring groove; the hexagon socket bolt passes through the inner holes of the groove wheel, the deep groove ball bearing, the retaining ring and the sleeve in sequence; the groove wheel is fixedly installed on the slider, and the bottom of the slider is provided with a Spring hole, in which a standard cylindrical compression spring is installed; pads are provided on the upper and lower sides of the back plate respectively; three groups of groove wheel groups are installed in parallel between the upper and lower pads, the groove wheel group in the middle is inverted, and the groove wheel groups on the left and right sides are installed upright, the baffles are respectively installed on the back plates on both sides of the three groups of groove wheel groups by two hexagon socket bolts, and the upper and lower sides of the slider are respectively fixed by a pressure plate; the pressure plate and the pad are fixed to the back plate by two hexagon socket bolts; threaded through holes are provided on the pads of the three sliders opposite to the standard cylindrical compression springs, the adjusting bolts pass through the threaded through holes of the pads and are connected to the slider, and the locking nuts are sleeved on the threads of the adjusting bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The invention discloses an online unpowered winding device for an aluminum tube, which is suitable for the tail end of an aluminum tube straightening and blanking machine, and can realize online winding without manual supervision, thus saving labor, fully reducing the labor intensity of workers, and ensuring the consistency of winding. In addition, the device of the invention also has the following advantages:

[0016] 1. The device is simple in design. By adjusting the spacing between the groove wheels, different curvatures of the aluminum tube can be achieved, thereby achieving different winding diameters. The device is easy to adjust and can achieve precise winding diameters, effectively ensuring the consistency of the winding.

[0017] 2. Since the groove of the groove wheel is designed to be "V" shaped, there is no need to replace the wheel set when winding aluminum tubes of different specifications, and it can be adjusted quickly, fully improving production efficiency;

[0018] 3. Since the device is directly installed at the tail end of the straightening and unloading equipment, it does not require power drive and does not consume electricity during the production process, thus achieving energy saving and consumption reduction;

[0019] 4. The device realizes online continuous winding, with precise control of winding diameter, low operating difficulty and high safety performance;

[0020] The aluminum tube straightening, feeding and coiling processes are combined into one. A copper connecting pipe welding (or expansion, shrinking) equipment can be set up next to the coiling process. Only one operator is required to complete the coiling, feeding and welding (or expansion, shrinking) operations, avoiding transfer and handling operations, fully improving production efficiency and saving operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1-Figure 3, an aluminum tube online unpowered winding device consists of a back plate 10, a cushion block 9, a pressure plate 8, a baffle 14, an adjusting bolt 12, a locking nut 11 and a groove wheel set. The groove wheel set consists of a groove wheel 1, a deep groove ball bearing 2, a hexagon socket bolt 3, a retaining ring 4, a sleeve 5, a slider 6 and a standard cylindrical compression spring 7. The groove wheel 1 is made of hard nylon, and a "V"-shaped groove is provided in the middle of its outer circle. The inside of the groove wheel 1 is a step hole, and a retaining ring groove is provided at one end of the step hole. Two deep groove ball bearings 2 are installed in the step hole inside the groove wheel 1. The retaining ring 4 is installed in the retaining ring groove to fix the groove wheel 1 and the bearing 2. The sleeve 5 is used to support the inner ring of the bearing 2 to ensure that the groove wheel 1 can rotate freely and flexibly. The hexagon socket bolt 3 passes through the inner holes of the groove wheel 1, the deep groove ball bearing 2, the retaining ring 4 and the sleeve 5 in turn, and the groove wheel is fixedly installed on the slider 6. A spring hole is provided at the bottom of the slider 6, and a standard cylindrical compression spring 7 is installed in the spring hole. Pads 9 are provided on the upper and lower sides of the back plate 10 respectively. Three groups of grooved wheel sets are installed in parallel between the upper and lower pads 9, with the grooved wheel set in the middle being inverted and the grooved wheel sets on the left and right sides being installed upright. Baffles 14 are provided on both sides of the three groups of grooved wheel sets, and the baffles 14 are fixed to the two ends of the back plate 10 respectively by two hexagon socket bolts 13. The upper and lower sides of the slider 6 are fixed by a pressure plate 8 respectively. The pressure plate 8 and the pad 9 are fixed to the back plate 10 by two hexagon socket bolts 13. Threaded through holes are provided on the pads 9 at the other end of the three sliders 6 opposite to the standard cylindrical compression spring 7. The adjusting bolt 12 acts on the slider 6 through the threaded through hole of the pad 9. Under the action of the adjusting bolt 12 and the standard cylindrical compression spring 7, the slider 6 can slide up and down. The locking nut 11 is sleeved on the thread of the adjusting bolt 12 to lock and adjust the screw-in depth of the bolt 12, control the position of the slider 6 and the groove wheel group, and prevent loosening.

[0025] When in use, the device is installed at the tail end of the aluminum tube straightening and blanking machine, the locking nut 11 is loosened, and the spacing between the three grooved wheel groups is adjusted by turning the adjusting bolt 12 according to the required diameter of the winding tube and the winding diameter. After debugging, the locking nut 11 is tightened. Start the straightening and blanking machine, and the aluminum tube required to be wound passes through the driving wheel group, the straightening wheel group and the cutting device of the straightening and blanking machine in turn, and then passes through the three grooved wheel groups of the device. Under the action of the three grooved wheel groups, the aluminum tube is continuously wound. When the straightening and blanking machine feeds to the set length, the feeding is automatically stopped, and the cutting device clamps and cuts. After the aluminum tube is cut, the straightening and blanking machine continues to feed, and the subsequent aluminum tube moves forward and pushes the aluminum tube to complete the winding. The aluminum tube that has completed the winding automatically drops, and the subsequent aluminum tube enters the wheel group and continues to wind.

[0026] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. An online unpowered winding device for an aluminum tube, characterized in that: The invention comprises a back plate (10), a cushion block (9), a pressure plate (8), a stopper bar (14), an adjusting bolt (12), a locking nut (11) and a groove wheel assembly, wherein the groove wheel assembly comprises a groove wheel (1), a deep groove ball bearing (2), a hexagon socket bolt (3), a retaining ring (4), a sleeve (5), a slider (6) and a standard cylindrical compression spring (7); a "V"-shaped groove is provided in the middle of the outer circle of the groove wheel (1), the interior of which is a step hole, a retaining ring groove is provided at one end of the step hole, and two deep groove ball bearings (2) are installed in the step hole; the retaining ring (4) is installed in the retaining ring groove; the hexagon socket bolt (3) passes through the inner holes of the groove wheel (1), the deep groove ball bearing (2), the retaining ring (4) and the sleeve (5) in sequence; the groove wheel (1) is fixedly installed on the slider (6), the bottom of the slider (6) is provided with a spring hole, and the spring A standard cylindrical compression spring (7) is installed in the hole; pads (9) are respectively provided on the upper and lower sides of the back plate (10); three groups of groove wheel groups are installed in parallel between the upper and lower pads (9), the groove wheel group located in the middle is inverted, and the groove wheel groups located on the left and right sides are installed upright; the blocking bar (14) is respectively installed on the back plates (10) on both sides of the three groups of groove wheel groups through two hexagon socket bolts (13); the upper and lower sides of the slider (6) are respectively fixed by a pressure plate (8); the pressure plate (8) and the pad (9) are fixed to the back plate (10) by two hexagon socket bolts (13); threaded through holes are provided on the pads (9) of the three sliders (6) opposite to the standard cylindrical compression spring (7); the adjusting bolt (12) passes through the threaded through hole of the pad (9) and is connected to the slider (6); the locking nut (11) is sleeved on the thread of the adjusting bolt (12).

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