U-shaped pipe production equipment for washing machine evaporator and production method of U-shaped pipe production equipment

Abstract

The invention relates to the technical field of evaporators, in particular to U-shaped pipe production equipment for a washing machine evaporator and a production method thereof.The U-shaped pipe production equipment comprises a discharging rod and a forming chamber, a bending mechanism is arranged in the forming chamber, a movable limiting frame is arranged on one side of the bending mechanism, and the limiting frame comprises a pair of mouth-shaped pieces; one end of the mouth-shaped piece is fixedly connected with an inner arc strip and is in sliding fit with a limiting plate, one end of the limiting plate is provided with an inclined face, the outer side of the mouth-shaped piece is fixedly connected with a plurality of first guide rods, the first guide rods penetrate through and are in sliding fit with connecting rods, and one ends of the connecting rods are fixedly connected with the limiting plate. The outer side of the first guide rod is sleeved with a first spring. An L-shaped rod is fixedly connected to one end of the discharging rod, a discharging opening is formed in the lower end of the forming chamber, and a discharging barrel is arranged on the lower side of the discharging opening.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators, and in particular to U-shaped tube production equipment and a production method thereof for washing machine evaporators. Background Art

[0002] In a washing machine with a washer and dryer, the evaporator, as the core component of the drying function, is mainly composed of heat dissipation fins and heat exchange tubes. The heat exchange tubes are connected and welded with long U-shaped tubes and short U-shaped tubes to form a passage for the circulation of refrigerant.

[0003] In the actual production process, after the short U-shaped tube is bent, the formed U-shaped tube can be put into use in the next process, such as the interface shaping process or the docking assembly process with the long U-shaped tube. However, these processes require the U-shaped tube to be arranged neatly before it can be used by corresponding automated equipment, such as an interface shaping machine or a feeding assembly robot, etc. However, when the bending work is performed, a large number of U-shaped tubes are automatically dropped into the blanking box after being bent and cut. When the next process is required, a vibrating loading tray is often used for automatic arrangement and loading to facilitate the next process. During the transfer process during this period, a lot of processing time will undoubtedly be wasted, and additional vibrating loading trays are required for sorting, resulting in additional costs.

[0004] Therefore, it is necessary to provide a U-shaped tube production device and a production method for a washing machine evaporator, which can realize the functions of neat blanking and automatic arrangement of the U-shaped tube after forming. Summary of the invention

[0005] The object of the present invention is to provide a U-shaped tube production device and a production method for a washing machine evaporator, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a U-shaped tube production device for a washing machine evaporator and a production method thereof, comprising a discharge rod and a molding chamber,

[0007] The molding chamber is provided with a bending mechanism, a movable limit frame is provided on one side of the bending mechanism, the limit frame includes a pair of mouth-shaped parts, one end of the mouth-shaped part is fixedly connected to the inner arc strip, one end of the mouth-shaped part is slidably matched with a limit plate, one end of the limit plate is provided with an inclined surface, the outer side of the mouth-shaped part is fixedly connected with a plurality of guide rods 1, the guide rods 1 penetrate and slidably match with a connecting rod, one end of the connecting rod is fixedly connected to the limit plate, and the outer side of the guide rods 1 is sleeved with a spring 1;

[0008] One end of the discharge rod is fixedly connected to an L-shaped rod, the lower end of the molding chamber is provided with a blanking port, a blanking tube is arranged at the lower side of the blanking port, one end of the inner side of the blanking tube is fixedly connected to a center column, the upper end of the center column is flush with the bottom surface of the molding chamber, and the center column is connected to the L-shaped rod.

[0009] In one embodiment, the bending mechanism includes a pair of bending disks, a bending fixed rod and a bending movable rod are arranged between the pair of bending disks, the bending movable rod is eccentrically arranged on one side of the bending disk, the bending fixed rod is arranged at the center of the bending disk, and a plurality of annular grooves are arranged on the outer sides of the bending fixed rod and the bending movable rod.

[0010] In one embodiment, the upper end of the upper bending plate is fixedly connected to an upper top plate, an upper end cover is provided at the upper end of the upper top plate, the upper end cover is fixed to the upper end of the molding chamber, and the upper end of the upper end cover is fixedly connected to a motor 1, which drives the upper top plate to rotate.

[0011] In one embodiment, a stepped transverse groove is provided on one side of the bending disk, a square slider is slidably fitted in the stepped transverse groove, and both ends of the bending fixed rod extend into the stepped transverse groove and are fixedly connected to the square slider.

[0012] In one embodiment, the upper and lower ends of the bending movable rod pass through the bending disk and are rotatably connected to it. One side of the square slider is fixedly connected to a rack 1, and one side of the rack 1 is meshingly connected to a gear. The gear is arranged on the inner side of the bending disk. An adaptation cavity is provided on the inner side of the bending disk. The bending movable rod passes through the gear and is fixedly connected to it. A motor 2 is provided at the lower end of the lower bending disk, and the motor 2 drives the bending movable rod to rotate.

[0013] In one embodiment, one end of the mouth-shaped piece is fixedly connected to a plurality of fixing rods, one end of the fixing rods is fixedly connected to a displacement plate, and the displacement plate is driven to be displaced by a linear drive mechanism.

[0014] In one embodiment, a pair of L-shaped baffles are fixedly connected to the lower end of the molding chamber, the upper ends of the L-shaped baffles are connected to the blanking barrel, and the L-shaped baffles are adapted to the L-shaped rods;

[0015] Limiting bases are arranged on both sides of the discharge rod.

[0016] In one embodiment, a conveying rack is disposed on one side of the molding chamber, and a plurality of pairs of conveying wheel rods are disposed on the upper side of the conveying rack, and the conveying wheel rods clamp and transport the heat exchange tubes.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, through the relative displacement of the limiting frame towards the U-shaped tube body, several U-shaped tube bodies are pushed along the inclined surface of the limiting plate, forcing a pair of limiting plates to unfold, enabling the U-shaped tube bodies to enter into a pair of mouth-shaped parts. Then, the limiting plates reset under the action of the first spring, and cooperate with the inner arc strips to limit the U-shaped tube bodies. Several U-shaped tube bodies are vertically stacked within the limiting frame; several U-shaped tube bodies move synchronously under the limiting action of the limiting frame until they are displaced to the upper side of the blanking port. Under the action of gravity, several U-shaped tube bodies are sleeved outside the central column and fall along the blanking cylinder. The central column and the blanking cylinder guide the U-shaped tube bodies to prevent several U-shaped tube bodies from being scattered; finally, the U-shaped tube bodies fall onto the L-shaped rod and adjust the angle along the L-shaped tube, and are neatly arranged on the discharging rod, thus completing the neat blanking of the U-shaped tube bodies. After the U-shaped tube bodies are bent and formed, they are directly arranged neatly. By arranging several heat exchange tubes neatly for bending at the beginning of the bending and forming process, the state of several U-shaped tube bodies arranged is maintained, and direct blanking and collection are carried out, eliminating the subsequent further arrangement steps, facilitating direct use in the next process, thereby saving subsequent processing time and further improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following, in conjunction with the drawings, through the detailed description of the specific embodiments of the present application, will make the technical solutions and other beneficial effects of the present application obvious.

[0019] In the drawings:

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the partial cross-sectional schematic diagram of the present invention;

[0022] Figure 3 is the three-dimensional schematic diagram of the limiting frame of the present invention;

[0023] Figure 4 is the three-dimensional schematic diagram of the interior of the forming chamber of the present invention;

[0024] Figure 5 is the three-dimensional schematic diagram of the bottom of the forming chamber of the present invention;

[0025] Figure 6 is the three-dimensional schematic diagram of the gear of the present invention;

[0026] In the figure: 1. Forming chamber; 101. Bending disc; 102. Bending fixed rod; 103. Bending moving rod; 104. Square slider; 105. First rack; 106. Gear;

[0027] 201. Mouth-shaped part; 202. Inner arc strip; 203. Limiting plate; 204. First guide rod; 205. Connecting rod; 206. Fixed rod; 207. Displacement plate;

[0028] 4. Upper top plate; 401. Upper end cover;

[0029] 5. Discharge rod; 501. L-shaped rod; 502. Dropping port; 503. Dropping barrel; 504. Center column; 505. L-shaped stop rod;

[0030] 6. U-shaped tube body;

[0031] 7. Heat exchange tube;

[0032] 8. Motor 1; 801. Motor 2;

[0033] 9. Conveying wheel rod. DETAILED DESCRIPTION

[0034] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0035] See also Figure 1-6 The present invention provides a technical solution: a U-shaped tube production device and a production method for a washing machine evaporator, comprising a discharge rod 5 and a molding chamber 1,

[0036] A bending mechanism is provided in the molding chamber 1, and a movable limiting frame is provided on one side of the bending mechanism. The limiting frame includes a pair of mouth-shaped parts 201, one end of the mouth-shaped part 201 is fixedly connected to the inner arc strip 202, one end of the mouth-shaped part 201 is slidably matched with a limiting plate 203, one end of the limiting plate 203 is provided with an inclined surface, and a plurality of guide rods 204 are fixedly connected to the outer side of the mouth-shaped part 201, and the guide rods 204 penetrate and slidably match with connecting rods 205, one end of the connecting rods 205 is fixedly connected to the limiting plate 203, and a spring 1 is sleeved on the outer side of the guide rods 204;

[0037] One end of the discharge rod 5 is fixedly connected to an L-shaped rod 501, a blanking port 502 is opened at the lower end of the molding chamber 1, a blanking tube 503 is arranged at the lower side of the blanking port 502, and one end of the inner side of the blanking tube 503 is fixedly connected to a center column 504, the upper end of the center column 504 is flush with the inner bottom surface of the molding chamber 1, and the center column 504 is connected to the L-shaped rod 501.

[0038] On one side of the forming chamber 1, a conveying rack is provided, and several pairs of conveying wheel rods 9 are arranged on the upper side of the conveying rack. The conveying wheel rods 9 clamp and transport the heat exchange tubes 7.

[0039] The heat exchange tubes 7 to be processed are conveyed into the forming chamber 1 through several conveying wheel rods 9. A bending mechanism is arranged in the forming chamber 1 to bend the heat exchange tubes 7 to form the U-shaped tube body 6. Then, the U-shaped tube body 6 can be cut by a cutting mechanism. And a cutting opening is provided on one side of the forming chamber 1 to facilitate the cutting of the internal U-shaped tube body 6. Since the technology of cutting the U-shaped tube body 6 is a relatively mature existing technology, it will not be elaborated here too much; since several heat exchange tubes 7 are arranged vertically for bending, several cut U-shaped tube bodies 6 are also arranged vertically. At this time, the U-shaped tube bodies 6 are displaced relative to the limiting frame. Several U-shaped tube bodies 6 are pushed along the inclined surface of the limiting plate 203, forcing a pair of limiting plates 203 to expand, so that the U-shaped tube bodies 6 enter into a pair of mouth-shaped parts 201. Then, the limiting plate 203 resets under the action of the first spring, and cooperates with the inner arc strip 202 to limit the U-shaped tube bodies 6. Several U-shaped tube bodies 6 are vertically stacked within the limiting frame; a blanking port 502 adapted to the U-shaped tube body 6 is provided at the bottom of the forming chamber 1. Several U-shaped tube bodies 6 move synchronously under the limiting action of the limiting frame until they are displaced to the upper side of the blanking port 502. Under the action of gravity, several U-shaped tube bodies 6 are sleeved outside the central column 504 and fall along the blanking cylinder 503. The central column 504 and the blanking cylinder 503 guide the U-shaped tube body 6 to prevent several U-shaped tube bodies 6 from being scattered; finally, the U-shaped tube body 6 falls onto the L-shaped rod 501 and adjusts the angle along the L-shaped rod 501, and is neatly arranged on the discharging rod 5, thus completing the neat blanking of the U-shaped tube body 6. After the U-shaped tube body 6 is bent and formed, it can be directly arranged neatly. By arranging several heat exchange tubes 7 neatly for bending at the beginning of the bending and forming, the state of several U-shaped tube bodies 6 is maintained, and direct blanking and collection are carried out, saving the subsequent further arranging steps, facilitating the direct use of the next process, thus saving the subsequent processing time and further improving the efficiency.

[0040] The bending mechanism includes a pair of bending discs 101. A bending fixed rod 102 and a bending moving rod 103 are arranged between the pair of bending discs 101. The bending moving rod 103 is eccentrically arranged on one side of the bending disc 101, and the bending fixed rod 102 is arranged at the center of the bending disc 101. Several annular grooves are arranged on the outer sides of the bending fixed rod 102 and the bending moving rod 103.

[0041] The upper end of the upper bending disc 101 is fixedly connected with an upper top disc 4. The upper end of the upper top disc 4 is provided with an upper end cover 401. The upper end cover 401 is fixed to the upper end of the forming chamber 1. The upper end of the upper end cover 401 is fixedly connected with a first motor 8. The first motor 8 drives the upper top disc 4 to rotate.

[0042] Preferably, when bending and forming is required, the heat exchange tube 7 enters the annular groove between the bending fixed rod 102 and the bending moving rod 103. The upper top plate 4 is rotated by the first motor 8 to drive the bending disc 101 to rotate. The pair of bending discs 101 rotate 180 degrees, so that the eccentric bending moving rod 103 moves around the bending fixed rod 102, driving a plurality of heat exchange tubes 7 to fit on the outer side of the bending fixed rod 102 to form a U-shaped tube body 6 (as Figure 4 shown).

[0043] A stepped transverse groove is formed on one side of the bending disc 101. A square slider 104 is slidably fitted in the stepped transverse groove. Both ends of the bending fixed rod 102 extend into the stepped transverse groove and are fixedly connected to the square slider 104.

[0044] Preferably, in order to facilitate the clamping of the U-shaped tube body 6 by the limiting frame, the bending fixed rod 102 is set to be movable. Specifically, when the bending disc 101 completes the bending of the U-shaped tube body 6, at this time the stepped transverse groove is docked with the blanking port 502 (as Figure 4 shown). While the limiting frame is displaced, the bending fixed rod 102 is driven to slide along the stepped transverse groove through a pair of square sliders 104. One end of the U-shaped tube body 6 is located between the bending moving rod 103 and the bending fixed rod 102. When the bending fixed rod 102 drives the U-shaped tube body 6 to displace, the bending moving rod 103 supports and guides the U-shaped tube body 6 until it is docked with the limiting frame;

[0045] Preferably, a plurality of arc-shaped grooves are formed at one end of the limiting plate 203. When the U-shaped tube body 6 contacts the limiting plate 203, it is clamped into the arc-shaped grooves for guiding, improving the stability of the transitional displacement of the U-shaped tube body 6.

[0046] The upper and lower ends of the bending moving rod 103 penetrate through the bending disc 101 and are rotatably connected thereto. A first rack 105 is fixedly connected to one side of the square slider 104. A gear 106 is meshed with one side of the first rack 105. The gear 106 is arranged inside the bending disc 101. An adaptation cavity is formed inside the bending disc 101. The bending moving rod 103 penetrates through the gear 106 and is fixedly connected thereto. A second motor 801 is arranged at the lower end of the lower bending disc 101. The second motor 801 drives the bending moving rod 103 to rotate.

[0047] Preferably, the bending moving rod 103 is driven to rotate by the second motor 801. The bending moving rod 103 rotates to drive the U-shaped tube body 6, thereby assisting the bending fixed rod 102 to drive the U-shaped tube body 6 to displace, avoiding the deviation of the moving direction of the U-shaped tube body 6 due to the clamping of the bending moving rod 103 and the bending fixed rod 102;

[0048] Preferably, while the bending moving rod 103 rotates, through the meshing of the gear 106 and the first rack 105, the opposing slider 104 is driven, so that the displacement of the bending fixed rod 102 is synchronized with the rotation of the bending moving rod 103. That is to say, only by using the second motor 801, the displacement drive of the bending fixed rod 102 is also realized, solving the problem that due to limited installation space, it is impossible to effectively install a drive component for the opposing slider 104.

[0049] One end of the mouth-shaped part 201 is fixedly connected with a plurality of fixed rods 206. One end of the fixed rod 206 is fixedly connected with a displacement plate 207, and the displacement plate 207 is driven to displace by a linear drive mechanism.

[0050] Preferably, the displacement plate 207 can be driven by a linear drive mechanism, so as to drive the limit frame to perform horizontal displacement. The linear drive mechanism includes but is not limited to a lead screw mechanism, a gear rack mechanism or a cylinder, etc.

[0051] A pair of L-shaped stop rods 505 are fixedly connected to the lower end of the forming chamber 1. The upper ends of the L-shaped stop rods 505 are butted against the blanking cylinder 503, and the L-shaped stop rods 505 are adapted to the L-shaped rods 501;

[0052] Limit bases are arranged on both sides of the discharge rod 5.

[0053] Preferably, in order to improve the stability of the blanking of the U-shaped tube body 6, a pair of L-shaped stop rods 505 are provided. The L-shaped stop rods 505 are adapted to the L-shaped rods 501 to limit the upper ends of both sides of the U-shaped tube body 6, so that it stably lands on the L-shaped rods 501 and slides onto the discharge rod 5. And the discharge rod 5 is provided with an inclination angle to facilitate the subsequent sliding of the U-shaped tube body 6. The discharge rod 5 can be arranged to be docked with the equipment of the subsequent process to improve the efficiency of process conversion.

[0054] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected, the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the meanings of the above terms in the present application can be understood according to specific situations.

[0055] The above has introduced in detail the U-shaped tube production equipment for a washing machine evaporator and its production method provided by the embodiments of the present application. In this article, specific examples are used to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A U-shaped tube production device for a washing machine evaporator, comprising a discharge rod (5) and a molding chamber (1), characterized in that: A bending mechanism is provided in the molding chamber (1), and a movable limiting frame is provided on one side of the bending mechanism, the limiting frame comprising a pair of mouth-shaped parts (201), one end of the mouth-shaped part (201) is fixedly connected to the inner arc strip (202), one end of the mouth-shaped part (201) is slidably matched with a limiting plate (203), one end of the limiting plate (203) is provided with an inclined surface, the outer side of the mouth-shaped part (201) is fixedly connected to a plurality of guide rods (204), the guide rods (204) penetrate and slidably match with connecting rods (205), one end of the connecting rods (205) is fixedly connected to the limiting plate (203), and the outer side of the guide rods (204) is sleeved with a spring. One end of the discharge rod (5) is fixedly connected to an L-shaped rod (501), the lower end of the molding chamber (1) is provided with a blanking port (502), a blanking cylinder (503) is arranged at the lower side of the blanking port (502), and one end of the inner side of the blanking cylinder (503) is fixedly connected to a center column (504), the upper end of the center column (504) is flush with the inner bottom surface of the molding chamber (1), and the center column (504) is connected to the L-shaped rod (501).

2. The U-shaped tube production equipment for a washing machine evaporator according to claim 1, characterized in that: The bending mechanism comprises a pair of bending disks (101), a bending fixed rod (102) and a bending movable rod (103) are arranged between the pair of bending disks (101), the bending movable rod (103) is eccentrically arranged on one side of the bending disk (101), the bending fixed rod (102) is arranged at the center of the bending disk (101), and a plurality of annular grooves are arranged on the outer sides of the bending fixed rod (102) and the bending movable rod (103).

3. The U-shaped tube production equipment for a washing machine evaporator according to claim 2, characterized in that: The upper end of the upper bending plate (101) is fixedly connected to an upper top plate (4), the upper end of the upper top plate (4) is provided with an upper end cover (401), the upper end cover (401) is fixed to the upper end of the molding chamber (1), the upper end of the upper end cover (401) is fixedly connected to a motor 1 (8), and the motor 1 (8) drives the upper top plate (4) to rotate.

4. The U-shaped tube production equipment for a washing machine evaporator according to claim 2, characterized in that: A stepped transverse groove is provided on one side of the bending disk (101), a square slider (104) is slidably fitted in the stepped transverse groove, and both ends of the bending fixed rod (102) extend into the stepped transverse groove and are fixedly connected to the square slider (104).

5. The U-shaped tube production equipment for a washing machine evaporator according to claim 4, characterized in that: The upper and lower ends of the bending movable rod (103) pass through the bending disk (101) and are rotatably connected thereto; one side of the square slider (104) is fixedly connected to a rack (105); one side of the rack (105) is meshingly connected to a gear (106); the gear (106) is arranged on the inner side of the bending disk (101); an adaption cavity is provided on the inner side of the bending disk (101); the bending movable rod (103) passes through the gear (106) and is fixedly connected thereto; a motor (801) is provided at the lower end of the lower bending disk (101); the motor (801) drives the bending movable rod (103) to rotate.

6. The U-shaped tube production equipment for a washing machine evaporator according to claim 1, characterized in that: One end of the mouth-shaped piece (201) is fixedly connected to a plurality of fixing rods (206), one end of the fixing rods (206) is fixedly connected to a displacement plate (207), and the displacement plate (207) is driven to move by a linear drive mechanism.

7. The U-shaped tube production equipment for a washing machine evaporator according to claim 1, characterized in that: A pair of L-shaped blocking rods (505) are fixedly connected to the lower end of the molding chamber (1), the upper ends of the L-shaped blocking rods (505) are connected to the blanking cylinder (503), and the L-shaped blocking rods (505) are matched with the L-shaped rods (501); Limiting bases are arranged on both sides of the discharge rod (5).

8. The U-shaped tube production equipment for a washing machine evaporator according to claim 1, characterized in that: A conveying frame is arranged on one side of the molding chamber (1), and a plurality of pairs of conveying wheel rods (9) are arranged on the upper side of the conveying frame. The conveying wheel rods (9) clamp and transport the heat exchange tubes (7).

9. The production method of the U-shaped tube production equipment for a washing machine evaporator according to claim 4, characterized in that The following steps are involved: S1, transporting the heat exchange tube (7) to be processed into the molding chamber (1) through a plurality of transport wheel rods (9); S2, the heat exchange tube (7) enters the annular groove between the bending fixed rod (102) and the bending movable rod (103), and a pair of bending plates (101) are rotated 180 degrees, so that the eccentric bending movable rod (103) moves around the bending fixed rod (102), driving a plurality of heat exchange tubes (7) to fit on the outside of the bending fixed rod (102) to form a U-shaped tube body (6); S3, the U-shaped tube body (6) is cut by the cutting mechanism, and then the bending fixed rod (102) is driven to slide along the stepped horizontal groove by a pair of opposite sliders (104), and at the same time, the limiting frame is relatively displaced until a plurality of U-shaped tube bodies (6) are pushed along the inclined surface of the limiting plate (203), so that the pair of limiting plates (203) are unfolded, so that the U-shaped tube body (6) enters the pair of mouth-shaped parts (201), and then the limiting plate (203) is reset to limit the U-shaped tube body (6) in the limiting frame; S4, the limiting frame is moved to the upper side of the material drop opening (502), so that the plurality of U-shaped tube bodies (6) are sleeved on the outside of the central column (504) and fall along the material drop barrel (503); S5. The U-shaped tube body (6) falls onto the L-shaped rod (501) and is neatly arranged on the discharge rod (5).

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