Aluminum pipe flattening machining device for air conditioner evaporator

Abstract

The invention provides an aluminum pipe flattening machining device for an air conditioner evaporator, and belongs to the technical field of air conditioner accessory machining, the aluminum pipe flattening machining device comprises a conveying guide rail and a clamping and pressing mechanism, a moving mechanism is installed on the conveying guide rail, and the moving mechanism comprises a ball screw, a sliding nut and a first motor; a clamping assembly is installed on the top of the sliding nut. A set of infrared light curtain sensors are installed at the top of the end, close to the clamping and pressing mechanism, of the conveying guide rail, the clamping and pressing mechanism comprises a fixing frame, two bidirectional lead screws and four nut bases, and clamping plates are installed between the nut bases. The clamping plates of the clamping and pressing mechanism can evenly flatten the two faces of an aluminum pipe, the aluminum pipe is prevented from being broken, meanwhile, automatic displacement of the aluminum pipe can be achieved through the moving mechanism for flattening operation, mistaken clamping caused by manual conveying is avoided, meanwhile, the distance between the aluminum pipe and the clamping plates can be detected through an infrared light curtain sensor, and the aluminum pipe can be accurately clamped. And the length needing to be flattened is accurately controlled, and the flattening precision of the aluminum pipe of the air conditioner evaporator is improved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of air conditioner accessories processing, and in particular to an aluminum tube flattening processing device for an air conditioner evaporator. Background Art

[0002] The evaporator in the refrigerator is generally made by putting fins on both ends of an aluminum S-shaped tube, then expanding the inner and outer diameters of the aluminum tube with a tube expander and bending it, and finally welding it into shape. In order to facilitate the end of the S-shaped aluminum tube to pass through the fin hole, reduce the weld and improve the welding quality, the end of the aluminum tube needs to be flattened to achieve the ideal welding effect.

[0003] In the market, punching machines equipped with stamping dies are commonly used for flattening operations. This method can only flatten the aluminum tube from one side, resulting in different forces on the two sides of one end of the aluminum tube. The different forces can easily cause the aluminum tube to rupture, affecting the use of the aluminum tube. At the same time, manually placing the aluminum tube into the stamping die not only cannot accurately control the length that needs to be flattened, but is also prone to danger. Summary of the invention

[0004] The present invention mainly provides an aluminum tube flattening processing device for an air-conditioning evaporator to solve the technical problems raised in the above-mentioned background technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] An aluminum tube flattening processing device for an air conditioner evaporator comprises a conveying guide rail and a clamping mechanism, wherein a sliding groove is arranged on the top of the conveying guide rail, a moving mechanism is installed on the conveying guide rail, and the moving mechanism comprises a ball screw rotatably connected in the sliding groove, a sliding nut slidably installed on the ball screw, and a first motor connected to the ball screw; a clamping assembly is installed on the top of the sliding nut;

[0007] The clamping mechanism is installed at one end of the conveying guide rail, and a group of infrared light curtain sensors are installed on the top of the conveying guide rail near one end of the clamping mechanism. The clamping mechanism includes a fixed frame, two bidirectional screw rods rotatably connected to the fixed frame, and four nut seats symmetrically slidably installed on the two bidirectional screw rods. A second motor connected to one of the bidirectional screw rods is installed on the top of the fixed frame, and a splint is installed between the two nut seats on the same horizontal plane.

[0008] Furthermore, in the present invention, the clamping assembly includes a T-block connected to the sliding nut, a lower clamping block installed on the top of the T-block, and an upper clamping block located in the top area of ​​the lower clamping block, extension blocks are provided on both sides of the upper clamping block, electric push rods are installed on both sides of the top of the T-block, and the top output shaft of the electric push rod is connected to the extension block.

[0009] Furthermore, in the present invention, the upper clamping block and the lower clamping block are arc-shaped blocks with the same arc shape.

[0010] Furthermore, in the present invention, pressure sensors are installed at the center of the inner bottom of the upper clamping block and at the center of the top of the lower clamping block.

[0011] Furthermore, in the present invention, a group of distance measuring sensors are installed at corresponding positions on the top of one end of the T-block and the bottom of one end of the extension block, cross plates are provided on both sides of the fixed frame, and hydraulic cylinders are installed at the bottom of the two cross plates.

[0012] Furthermore, in the present invention, a connecting base is installed in the bottom area of ​​the conveying guide rail and the clamping mechanism, and the hydraulic cylinder is fixedly connected to the connecting base.

[0013] Furthermore, in the present invention, installation slots are provided at the corners of the connecting base.

[0014] Furthermore, in the present invention, a load-bearing roller is rotatably connected to the top of one end of the conveying guide rail near the clamping mechanism, the rolling surface of the load-bearing roller is consistent with the length direction of the conveying guide rail, and the top horizontal height of the load-bearing roller is consistent with the top horizontal height of the middle of the lower clamping block.

[0015] Furthermore, in the present invention, a cavity is provided in the top area of ​​the fixed frame, and two driving wheels respectively connected to two bidirectional screw rods are rotatably connected in the cavity of the fixed frame, and transmission belts are sleeved on the two driving wheels.

[0016] Furthermore, in the present invention, protrusions are installed at the centers of both sides of the clamping plate, and the inner side of the nut seat is provided with docking grooves adapted to the protrusions, and the protrusions and the docking grooves are fixedly connected by two fixing bolts.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention places the aluminum tube of the air-conditioning evaporator in a clamping assembly for fixing, and cooperates with a pressure sensor to achieve appropriate force and precise clamping of the aluminum tube. At the same time, through the cooperation of a distance measuring sensor and a hydraulic cylinder, the height of the clamping mechanism can be adjusted, so that the clamping plates of the clamping mechanism can evenly flatten both sides of the aluminum tube to avoid the aluminum tube from breaking. At the same time, the automatic displacement of the aluminum tube to the inside of the clamping mechanism for the flattening operation can be achieved through a moving mechanism, thereby avoiding mis-clamping caused by manual transportation and increasing safety. At the same time, the distance between the displacement of the aluminum tube and the clamping plates can be detected by an infrared light curtain sensor, so the length to be flattened can be accurately controlled, thereby improving the accuracy of the flattening of the aluminum tube of the air-conditioning evaporator, and having strong practicality.

[0019] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure (de-clamping and pressing mechanism) of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0024] Figure 5 It is a partial cross-sectional schematic diagram of the structure of the clamping mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the disassembly of the splint and nut holder structure of the present invention.

[0026] In the figure: 10, conveying guide rail; 11, sliding groove; 20, clamping assembly; 21, lower clamping block; 22, upper clamping block; 23, T-block; 24, extension block; 25, electric push rod; 26, pressure sensor; 30, moving mechanism; 31, ball screw; 32, sliding nut; 40, clamping mechanism; 41, fixed frame; 42, two-way screw; 43, nut seat; 431, docking groove; 44, second motor; 45, clamping plate; 451, protrusion; 46, cross plate; 47, driving wheel; 48, transmission belt; 49, fixing bolt; 50, infrared light curtain sensor; 60, hydraulic cylinder; 70, connecting base; 71, mounting slot; 80, load-bearing shaft roller; 90, distance measuring sensor. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] For examples, please refer to the attached Figure 1-6 , an aluminum tube flattening processing device for an air conditioner evaporator, comprising a conveying rail 10 and a clamping mechanism 40, wherein a sliding groove 11 is arranged on the top of the conveying rail 10, and a moving mechanism 30 is installed on the conveying rail 10, wherein the moving mechanism 30 comprises a ball screw 31 rotatably connected to the sliding groove 11, a sliding nut 32 slidably installed on the ball screw 31, and a first motor connected to the ball screw 31; a clamping assembly 20 is installed on the top of the sliding nut 32;

[0031] The clamping mechanism 40 is installed at one end of the conveying guide rail 10, and a group of infrared light curtain sensors 50 are installed on the top of the conveying guide rail 10 near the end of the clamping mechanism 40. The clamping mechanism 40 includes a fixed frame 41, and two bidirectional screw rods 42 rotatably connected to the fixed frame 41, and four nut seats 43 symmetrically slidably installed on the two bidirectional screw rods 42. A second motor 44 connected to one of the bidirectional screw rods 42 is installed on the top of the fixed frame 41, and a clamping plate 45 is installed between the two nut seats 43 on the same horizontal plane.

[0032] It should also be noted that the electrical components of the device are all electrically connected to a conventional PLC controller.

[0033] For details, please refer to the attached Figure 3 The clamping assembly 20 includes a T-block 23 connected to a sliding nut 32, a lower clamping block 21 mounted on the top of the T-block 23, and an upper clamping block 22 located in the top area of ​​the lower clamping block 21, and extension blocks 24 are arranged on both sides of the upper clamping block 22. Electric push rods 25 are installed on both sides of the top of the T-block 23, and the top output shaft of the electric push rod 25 is connected to the extension block 24;

[0034] It should be noted that, in this embodiment, the upper clamping block 22 can be moved up and down by the operation of the electric push rod 25 , so that the aluminum tube of the air conditioner evaporator is fixedly clamped by the lower clamping block 21 and the upper clamping block 22 .

[0035] For details, please refer to the attached Figure 3 , the upper clamping block 22 and the lower clamping block 21 are arc-shaped blocks with the same arc shape;

[0036] It should be noted that, in this embodiment, the clamping block of the arc block can clamp the tubular aluminum tube more stably.

[0037] For details, please refer to the attached Figure 3 A pressure sensor 26 is installed at the inner bottom center of the upper clamping block 22 and the top center of the lower clamping block 21;

[0038] It should be noted that, in the present embodiment, when the aluminum tube is placed on the lower clamping block 21, the pressure sensor 26 on the lower clamping block 21 will detect the pressure, thereby transmitting the information to the controller, and the controller automatically operates the electric push rod 25 to move the upper clamping block 22 downward to clamp the aluminum tube. When the upper clamping block 22 contacts the aluminum tube, the pressure sensor 26 on the upper clamping block 22 will detect the pressure and transmit the pressure value to the controller. When the pressure value detected by the pressure sensor 26 reaches the set value, the electric push rod 25 stops operating to ensure the clamping effect of the clamping block on the aluminum tube, while preventing the clamping block from excessively clamping the aluminum tube, causing the aluminum tube to become flat. The setting of the pressure sensor 26 can complete the automatic clamping of the aluminum tube and increase convenience.

[0039] For details, please refer to the attached Figure 3 and attached Figure 1 A set of distance measuring sensors 90 are installed at corresponding positions on the top of one end of the T-block 23 and the bottom of one end of the extension block 24. Both sides of the fixed frame 41 are provided with transverse plates 46, and the bottoms of the two transverse plates 46 are installed with hydraulic cylinders 60;

[0040] It should be noted that, in the present embodiment, after the two clamps clamp the aluminum tube, the distance sensor 90 can detect the distance between them, and the controller calculates the radius of the processed aluminum tube based on the thickness between the upper clamp 22 and the lower clamp 21. At this time, the hydraulic cylinder 60 operates to cause the fixed frame 41 to move up and down, so that the center horizontal line of the fixed frame 41 is aligned with the center of the circle of the aluminum tube. Therefore, in the subsequent clamping process, the two clamps 45 are in contact with both sides of the aluminum tube at the same time, ensuring that the degree of flattening on both sides of the aluminum tube is consistent, thereby preventing the aluminum tube from cracking.

[0041] For details, please refer to the attached Figure 1 The bottom area of ​​the conveying guide rail 10 and the clamping mechanism 40 is installed with a connecting base 70, and the hydraulic cylinder 60 is fixedly connected to the connecting base 70;

[0042] Furthermore, a mounting slot 71 is provided at the corner of the connecting base 70;

[0043] It should be noted that, in this embodiment, the connection base 70 can make the device integrated and easier to carry. At the same time, by installing a positioning component in the installation slot 71, the device can be fixed on a desktop or the ground, ensuring stable flattening processing of the aluminum tube of the evaporator.

[0044] For details, please refer to the attached Figure 2 The top of the conveying guide rail 10 near the clamping mechanism 40 is rotatably connected with a bearing shaft roller 80, the rolling surface of the bearing shaft roller 80 is consistent with the length direction of the conveying guide rail 10, and the top horizontal height of the bearing shaft roller 80 is consistent with the top horizontal height of the middle of the lower clamping block 21;

[0045] It should be noted that, in this embodiment, after one end of the aluminum tube is clamped by the clamping assembly 20, the other end can be placed on the load-bearing roller 80 to keep the aluminum tube level, so that it can smoothly enter the clamping mechanism 40 for clamping, and the height setting of the load-bearing roller 80 can make the bottom horizontal heights of both ends of the aluminum tube consistent, and the rolling surface of the load-bearing roller 80 will not affect the left and right movement of the aluminum tube.

[0046] For details, please refer to the attached Figure 5 The top area of ​​the fixed frame 41 is provided with a cavity, and two driving wheels 47 connected to two bidirectional screw rods 42 are rotatably connected in the cavity of the fixed frame 41, and a transmission belt 48 is sleeved on the two driving wheels 47;

[0047] It should be noted that, in the present embodiment, the two bidirectional screw rods 42 can be rotated synchronously and in the same direction through the transmission of the driving wheel 47 and the transmission belt 48 , thereby ensuring the stable displacement of the clamping plate 45 .

[0048] For details, please refer to the attached Figure 6 , protrusions 451 are installed at the centers of both sides of the clamping plate 45, and a docking groove 431 adapted to the protrusion 451 is provided on the inner side of the nut seat 43, and the protrusion 451 and the docking groove 431 are fixedly connected by two fixing bolts 49;

[0049] It should be noted that, in this embodiment, by removing the fixing bolt 49 , the protrusion 451 and the docking groove 431 can be separated, and then the clamping plate 45 and the nut seat 43 can be disassembled, so as to facilitate the replacement of the accessories of the clamping plate 45 .

[0050] The specific operation mode of the present invention is as follows:

[0051] When processing the aluminum tube of the air conditioner evaporator, firstly, one end of the aluminum tube is placed on the bearing shaft roller 80, and the other end is placed on the lower clamping block 21. At this time, the pressure sensor 26 on the lower clamping block 21 will detect the pressure, thereby transmitting the information to the controller, and the controller automatically operates the electric push rod 25 to move the upper clamping block 22 downward to clamp the aluminum tube. When the upper clamping block 22 contacts the aluminum tube, the pressure sensor 26 on the upper clamping block 22 will detect the pressure and transmit the pressure value to the controller. When the pressure value detected by the pressure sensor 26 reaches the set value, the electric push rod 25 stops operating to ensure the clamping effect of the clamping block on the aluminum tube;

[0052] Then the distance sensor 90 can detect the distance between them, and the controller calculates the radius of the processed aluminum tube by combining the thickness between the upper clamp block 22 and the lower clamp block 21. At this time, the hydraulic cylinder 60 operates to move the fixed frame 41 up and down so that the center horizontal line of the fixed frame 41 is aligned with the center of the aluminum tube.

[0053] Then the first motor operates to make the sliding nut 32 slide on the ball screw 31 with the clamping assembly 20, so that the aluminum tube moves toward one end of the clamping mechanism 40. When the aluminum tube passes through the infrared light curtain sensor 50, the distance that the aluminum tube moves past the infrared light curtain sensor 50 is detected and calculated. The controller calculates the distance that the aluminum tube moves between the two clamping plates 45. When the set value is reached, the second motor 44 operates to make the bidirectional screw 42 rotate, so that the nut seat 43 brings the two clamping plates 45 closer to each other, and the two sides of the aluminum tube are evenly clamped and flattened, thereby completing the clamping and flattening process of the aluminum tube of the air conditioner evaporator.

[0054] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An aluminum tube flattening processing device for an air conditioner evaporator, comprising a conveying guide rail (10) and a clamping mechanism (40), It is characterized in that A sliding groove (11) is arranged at the top of the conveying guide rail (10), and a moving mechanism (30) is installed on the conveying guide rail (10), and the moving mechanism (30) comprises a ball screw (31) rotatably connected in the sliding groove (11), a sliding nut (32) slidably installed on the ball screw (31), and a first motor connected to the ball screw (31); a clamping assembly (20) is installed on the top of the sliding nut (32); The clamping mechanism (40) is installed at one end of the conveying guide rail (10), and a group of infrared light curtain sensors (50) are installed at the top of the conveying guide rail (10) near one end of the clamping mechanism (40). The clamping mechanism (40) includes a fixed frame (41), and two bidirectional screw rods (42) rotatably connected to the fixed frame (41), and four nut seats (43) symmetrically slidably installed on the two bidirectional screw rods (42). A second motor (44) connected to one of the bidirectional screw rods (42) is installed on the top of the fixed frame (41), and a clamping plate (45) is installed between two of the nut seats (43) on the same horizontal plane.

2. The aluminum tube flattening processing device for air conditioner evaporator according to claim 1, It is characterized in that The clamping assembly (20) comprises a T-block (23) connected to a sliding nut (32), a lower clamping block (21) mounted on the top of the T-block (23), and an upper clamping block (22) located in the top area of ​​the lower clamping block (21), extension blocks (24) are arranged on both sides of the upper clamping block (22), electric push rods (25) are installed on both sides of the top of the T-block (23), and the top output shaft of the electric push rod (25) is connected to the extension block (24).

3. The aluminum tube flattening processing device for air conditioner evaporator according to claim 2, It is characterized in that The upper clamping block (22) and the lower clamping block (21) are arc-shaped blocks with the same arc shape.

4. The aluminum tube flattening processing device for an air conditioner evaporator according to claim 3, It is characterized in that Pressure sensors (26) are installed at the center of the inner bottom of the upper clamping block (22) and at the center of the top of the lower clamping block (21).

5. The aluminum tube flattening processing device for air conditioner evaporator according to claim 2, It is characterized in that A group of distance measuring sensors (90) are installed at corresponding positions on the top of one end of the T-shaped block (23) and the bottom of one end of the extension block (24), and transverse plates (46) are provided on both sides of the fixed frame (41), and hydraulic cylinders (60) are installed at the bottoms of the two transverse plates (46).

6. The aluminum tube flattening processing device for air conditioner evaporator according to claim 5, It is characterized in that A connecting base (70) is installed in the bottom area of ​​the conveying guide rail (10) and the clamping mechanism (40), and the hydraulic cylinder (60) is fixedly connected to the connecting base (70).

7. The aluminum tube flattening processing device for air conditioner evaporator according to claim 6, It is characterized in that The connecting base (70) is provided with a mounting slot hole (71) at a corner.

8. The aluminum tube flattening processing device for air conditioner evaporator according to claim 2, It is characterized in that The top of one end of the conveying guide rail (10) close to the clamping mechanism (40) is rotatably connected to a bearing roller (80), the rolling surface of the bearing roller (80) is consistent with the length direction of the conveying guide rail (10), and the top horizontal height of the bearing roller (80) is consistent with the top horizontal height of the middle of the lower clamping block (21).

9. The aluminum tube flattening processing device for air conditioner evaporator according to claim 1, It is characterized in that A cavity is provided in the top area of ​​the fixed frame (41), and two driving wheels (47) respectively connected to two bidirectional screw rods (42) are rotatably connected in the cavity of the fixed frame (41), and a transmission belt (48) is sleeved on the two driving wheels (47).

10. The aluminum tube flattening processing device for air conditioner evaporator according to claim 1, It is characterized in that The centers of both sides of the clamping plate (45) are provided with protrusions (451), the inner side of the nut seat (43) is provided with a docking groove (431) adapted to the protrusion (451), and the protrusion (451) and the docking groove (431) are fixedly connected by two fixing bolts (49).

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