A copper pipe port processing and cutting device for an air conditioner evaporator

Abstract

The utility model relates to air conditioning manufacturing and processing technical field, especially a copper pipe port processing cutting device for air conditioning evaporimeter convenient to dismount, solved the positioning and locking of the blade in the prior art by depending on spring to provide elastic compression force, long -term repeatedly dismount and work vibration can lead to spring fatigue, elasticity attenuation even fracture, and further cause the problem that the connecting structure loosens, the axial or radial shaking of blade in the cutting process. A copper pipe port processing cutting device for air conditioning evaporimeter convenient to dismount, including cutting frame and the handle connected in the bottom of cutting frame, the both sides of the inner bottom of cutting frame are connected with the mounting block, and the inner top rotatably connects with two gyro wheel. The utility model discloses through the cooperation clamping rotating rod of bottom semicircular groove and top semicircular groove, and by the fixed limiting block of positioning board, has realized the rigid fixing of blade, has effectively prevented the shaking of blade in the cutting process.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner manufacturing and processing technology, and in particular to a copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble. Background Technology

[0002] The evaporator is a core heat exchange component in an air conditioning refrigeration system. Internally, it consists of multiple slender copper tubes for refrigerant flow and heat exchange. These copper tubes require precise end machining and cutting before assembly to ensure smooth, burr-free ends, meeting the requirements of subsequent tube expansion, welding, and sealing connections. Therefore, cutting equipment used for machining the copper tube ends of air conditioning evaporators plays a crucial role in the air conditioning manufacturing industry. As a key processing piece of equipment, its cutting accuracy, ease of operation, and maintenance efficiency directly affect the overall assembly quality, refrigeration performance, and operational safety of the unit. Especially in the core process of batch cutting and end-face treatment of copper tubes, existing cutting equipment has gradually revealed a series of significant limitations and technical problems in dealing with frequent blade changes, ensuring cutting stability, and improving disassembly and assembly efficiency.

[0003] Utility model patent CN 209792737 U discloses a cutting device. This technical solution achieves rapid disassembly and secondary fixation of the blade by setting up structures such as a crossbar, retaining ring, limiting block, and limiting spring. To a certain extent, it avoids problems such as stripping and rusting that are prone to occur in traditional bolt connections, thus improving replacement efficiency. However, this device relies on the elastic clamping force provided by the spring to achieve the positioning and locking of the blade. Long-term repeated disassembly and assembly and working vibration will cause spring fatigue, elasticity decay, or even breakage. This will lead to loosening of the connection structure and axial or radial wobbling of the blade during cutting, seriously affecting the flatness and consistency of the cutting end face, resulting in poor sealing of the copper pipe interface and increasing the risk of leakage.

[0004] Therefore, to address the shortcomings of existing technologies, we urgently need a cutting device for processing the copper tube ends of air conditioner evaporators that is easy to disassemble and assemble, thus solving this problem. This new cutting device should maintain the advantage of convenient disassembly and assembly while eliminating reliance on easily damaged elastic components such as springs, adopting a more stable and reliable mechanical locking structure to significantly improve the stability and repeatability of the blade installation. Utility Model Content

[0005] The purpose of this invention is to provide a copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble. This solves the problem in the prior art that relies on springs to provide elastic clamping force to achieve the positioning and locking of the blade. Long-term repeated disassembly and assembly and working vibration will cause spring fatigue, elastic decay or even breakage, which will lead to loose connection structure and axial or radial shaking of the blade during the cutting process. This will seriously affect the flatness and consistency of the cutting end face, resulting in poor sealing of the copper tube interface and increased risk of leakage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble includes a cutting frame and a handle connected to the bottom of the cutting frame. The inner bottom of the cutting frame is connected to mounting blocks on both sides, and the inner top is rotatably connected to two rollers. A blade is provided between the two mounting blocks, and a rotating rod is rotatably connected to both sides of the blade. A bottom semi-circular groove adapted to the rotating rod is opened at the top center of each of the two mounting blocks. A limit block is provided at the top of each of the two mounting blocks, and a top semi-circular groove adapted to the rotating rod is opened at the bottom center of each of the two limit blocks. Two positioning plates are connected to one side of each limit block, and the positioning plates are detachably connected to the side wall of the mounting block.

[0007] Preferably, a positioning circular plate is fixedly connected to one end of the rotating rod, and the positioning circular plate is fixedly connected to the side wall of the blade with bolts.

[0008] Preferably, the inner bottom center of the cutting frame is provided with an arc-shaped groove that matches the blade.

[0009] Preferably, a limiting circular plate is fixedly connected to each of the two rotating rods on the side away from each other, and the diameter of the limiting circular plate is larger than the diameter of the rotating rod.

[0010] Preferably, the mounting block has positioning holes on both sides of its top, and positioning rods that match the positioning holes are fixedly connected to both sides of its bottom.

[0011] Preferably, a positioning screw with one end threaded through the positioning plate is provided on one side of the positioning plate, and a plurality of threaded holes adapted to the positioning screw are provided on one side of the mounting block.

[0012] This utility model has at least the following beneficial effects: By installing mounting blocks on both sides of the bottom inside the cutting frame, and attaching detachable limiting blocks to them, a circular clamping structure is formed by the bottom semicircular groove on the mounting block and the top semicircular groove on the limiting block, achieving rigid limiting of the rotating rods at both ends of the blade. This avoids the fatigue loosening problem caused by relying on spring elastic compression in traditional technology, significantly improving the connection stability of the blade after long-term use and repeated disassembly and assembly. Since this structure does not use easily damaged elastic elements such as springs, it fundamentally eliminates the blade wobbling phenomenon caused by spring aging, breakage, or elastic decay, ensuring that the axial and radial positions of the blade remain accurate throughout the cutting process. This effectively guarantees the flatness and consistency of the copper tube end face, reduces burrs and cutting deviations, and improves the sealing reliability of subsequent tube expansion and welding. At the same time, the positioning plate enables quick installation and removal of the limiting blocks, retaining the functional advantage of convenient blade replacement, and balancing operational efficiency and structural stability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the limiting block and mounting block structure of this utility model; Figure 3 This is a schematic diagram of the positioning hole and threaded hole structure of this utility model; Figure 4 This is a schematic diagram of the rotating rod and limiting circular plate structure of this utility model; Figure 5 This is a schematic diagram of the positioning plate and positioning screw structure of this utility model.

[0015] In the diagram: 1. Handle; 2. Blade; 3. Roller; 4. Cutting frame; 5. Limiting block; 6. Mounting block; 7. Positioning hole; 8. Arc groove; 9. Threaded hole; 10. Bottom semi-circular groove; 11. Rotating rod; 12. Limiting circular plate; 13. Positioning circular plate; 14. Positioning rod; 15. Top semi-circular groove; 16. Positioning plate; 17. Positioning screw. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Example

[0017] Please see Figure 1-5 As shown, this embodiment of a copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble includes a cutting frame 4 and a handle 1 connected to the bottom of the cutting frame 4. Mounting blocks 6 are connected to both sides of the inner bottom of the cutting frame 4, and two rollers 3 are rotatably connected to the inner top. A blade 2 is provided between the two mounting blocks 6. A rotating rod 11 is rotatably connected to both sides of the blade 2. A bottom semi-circular groove 10 adapted to the rotating rod 11 is opened at the top center of each of the two mounting blocks 6. A limit block 5 is provided at the top of each of the two mounting blocks 6. A top semi-circular groove 15 adapted to the rotating rod 11 is opened at the bottom center of each of the two limit blocks 5. Two positioning plates 16 are connected to one side of the limit block 5. The positioning plates 16 are detachably connected to the side wall of the mounting block 6.

[0018] Workflow: When using this easily disassembled and reassembled copper tube end processing cutting device for air conditioner evaporators, the operator first holds the handle 1 and aligns the cutting frame 4 with the copper tube to be cut. The copper tube passes through the inside of the cutting frame 4 and abuts against the mounting block 6 area at the bottom. At this time, the blade 2 is located on the copper tube's travel path. Two rollers 3 are rotatably connected to the top inside the cutting frame 4, providing guidance and support during the copper tube's advancement and reducing deviation. When it is necessary to replace or install the blade 2, first remove the connecting parts between the two positioning plates 16 on one side of the limiting block 5 and the side wall of the mounting block 6, so that the limiting block 5 can be removed upwards. Then, the rotating rods 11 on both sides of the blade 2 are respectively... Align the rotating rod 11 with the bottom semicircular groove 10 on the top of the mounting block 6 and insert it into the bottom semicircular groove 10. Then, lower the limiting block 5 so that its bottom top semicircular groove 15 corresponds to and engages with the rotating rod 11. At this time, the rotating rod 11 is surrounded by the upper and lower semicircular grooves to form a circular limiting hole, achieving stable coverage in both the circumferential and axial directions. Finally, the limiting block 5 is re-fixed to the side wall of the mounting block 6 through the positioning plate 16, completing the quick installation and locking of the blade 2. During the cutting operation, the pushing device moves along the axial direction of the copper tube, and the blade 2 completes the end cutting under stable support. After the operation is completed, the blade 2 can be disassembled in the reverse order for maintenance or replacement. Example

[0019] Please see Figure 1-5As shown in this embodiment, a copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble has a positioning circular plate 13 fixedly connected to one end of the rotating rod 11. The positioning circular plate 13 is bolted to the side wall of the blade 2. Specifically, by fixing the positioning circular plate 13 to one end of the rotating rod 11 and bolting the positioning circular plate 13 to the side wall of the blade 2, when installing or replacing the blade 2, the blade 2 and the rotating rod 11 can be quickly connected and separated by tightening or loosening the bolts. This achieves the effect of enhancing the stability of the blade assembly while facilitating disassembly and assembly, ensuring that the blade will not loosen or shift during use.

[0020] Each of the two rotating rods 11 has a limiting circular plate 12 fixedly connected to its opposite side. The diameter of the limiting circular plate 12 is larger than the diameter of the rotating rod 11. Specifically, by fixing the limiting circular plate 12 to the opposite side of each of the two rotating rods 11, and setting the diameter of the limiting circular plate 12 to be larger than the diameter of the rotating rod 11, when the rotating rod 11 is embedded into the bottom semicircular groove 10 and the top semicircular groove 15, the limiting circular plate 12 abuts against the outer end face of the mounting block 6 and the limiting block 5, thereby playing an axial limiting role. This achieves the effect of preventing the rotating rod 11 from axially moving or falling out during use, and further improves the reliability of the blade installation. Example

[0021] Please see Figure 1-5 As shown in this embodiment, a copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble has an arc-shaped groove 8 adapted to the blade 2 at the center of the inner bottom of the cutting frame 4. Specifically, by setting the arc-shaped groove 8 adapted to the blade 2 at the center of the inner bottom of the cutting frame 4, when the blade 2 cuts the copper tube, the cutting edge of the blade 2 is embedded in the arc-shaped groove 8, so that the copper tube can be pushed smoothly along the groove wall. This achieves the effect of providing clearance space for the blade and guiding the cutting path, effectively preventing the copper tube from deforming or the cut from deviating during the cutting process, and improving the flatness of the end face.

[0022] The mounting block 6 has positioning holes 7 on both sides of its top, and positioning rods 14 that are compatible with the positioning holes 7 are fixedly connected to both sides of its bottom. Specifically, by setting up positioning holes 7 on both sides of the top and positioning rods 14 that are compatible with the positioning holes 7 on both sides of the bottom, when multiple cutting devices are stacked or installed on the tooling, the positioning rod 14 of the previous device can be inserted into the positioning hole 7 of the next device, which achieves the effect of precise positioning and stacking and fixing of multiple devices, which is conducive to on-site management and orderly arrangement and reduces space occupation.

[0023] A positioning screw 17 with one end threaded through the positioning plate 16 is provided on one side, and a number of threaded holes 9 adapted to the positioning screw 17 are provided on one side of the mounting block 6. Specifically, by setting a positioning screw 17 with one end threaded through the positioning plate 16 on one side, and a number of threaded holes 9 adapted to the positioning screw 17 on one side of the mounting block 6, when fixing the limiting block 5, the positioning screw 17 is tightened so that its end is screwed into the corresponding threaded hole 9, realizing a detachable rigid connection between the limiting block 5 and the mounting block 6. This achieves the effect of firm connection, convenient assembly and disassembly, and no reliance on easily damaged elastic parts, thereby improving the stability and maintenance efficiency of the structure in long-term use.

[0024] Workflow: When using this easy-to-disassemble copper tube end processing cutting device for air conditioner evaporators, the operator holds the handle 1 and aligns the cutting frame 4 with the copper tube to be cut. The copper tube passes through the inside of the cutting frame 4. The two rollers 3 at the top provide rolling support and guidance during the copper tube's advancement, reducing deviation. When it is necessary to install the blade 2, first loosen the positioning screw 17 on the positioning plate 16 so that its end exits from the threaded hole 9 on the side wall of the mounting block 6. Then remove the positioning plate 16 and remove the limiting block 5 upwards. Next, align the rotating rods 11 on both sides of the blade 2 with the bottom semi-circular groove 10 at the top of the mounting block 6 and insert them so that the rotating rods 11 are embedded therein. At this time, the limiting circular plate 12 at the outer end of the rotating rod 11 abuts against... The outer side of the mounting block 6 is held in place to prevent axial slippage; then the limiting block 5 is lowered so that the top semi-circular groove 15 at its bottom engages with the rotating rod 11 to form a complete circular limiting hole. At the same time, the positioning circular plate 13 is fixedly connected to the side wall of the blade 2 by bolts to ensure that the blade and the rotating rod 11 are firmly connected; then the positioning plate 16 is reset and the positioning screw 17 is tightened so that its end is screwed back into the threaded hole 9 on the mounting block 6, thereby firmly locking the limiting block 5; during cutting, the pushing device moves along the copper tube, and the blade 2 cuts into the copper tube under the clearance of the arc groove 8 to complete the end cutting; when multiple devices are stored or assembled, they can be accurately stacked and positioned by inserting the positioning rod 14 of the previous device into the positioning hole 7 of the next device.

[0025] Beneficial effects: The connection between the handle 1 and the cutting frame 4 provides a stable human-machine interface; the two rollers 3 at the top inside the cutting frame 4 provide rolling support and guidance during the copper tube advance, reducing frictional resistance and cutting deviation; the mounting block 6 supports the rotating rod 11 and has a bottom semi-circular groove 10, which cooperates with the top semi-circular groove 15 on the limiting block 5 to form a circumferential and axial limit on the rotating rod 11, avoiding fatigue and loosening problems caused by the use of spring structure; the limiting block 5 is detachably connected to the mounting block 6 through the positioning plate 16, which facilitates the quick replacement of the blade 2; The positioning plate 16 engages with the positioning screw 17 and the threaded hole 9 on the mounting block 6 to achieve rigid locking, ensuring a secure connection without the risk of aging of elastic components; the limiting circular plates 12 at both ends of the rotating rod 11 effectively prevent axial movement or disengagement during use; the positioning circular plate 13 is fixed to the blade 2 with bolts, enhancing the reliability of the blade connection; the arc groove 8 provides cutting clearance space for the blade 2, ensuring the smooth passage of the copper tube and reducing cutting deformation; the positioning hole 7 on the mounting block 6 engages with the positioning rod 14 to achieve precise stacking and tooling positioning between multiple devices, improving on-site management efficiency.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble, characterized in that, include: The cutting frame (4) and the handle (1) connected to the bottom of the cutting frame (4) are provided. The inner bottom sides of the cutting frame (4) are connected to mounting blocks (6), and the inner top is rotatably connected to two rollers (3). A blade (2) is provided between the two mounting blocks (6). A rotating rod (11) is rotatably connected to both sides of the blade (2). A bottom semi-circular groove (10) adapted to the rotating rod (11) is provided at the top center of the two mounting blocks (6). A limit block (5) is provided at the top of the two mounting blocks (6). A top semi-circular groove (15) adapted to the rotating rod (11) is provided at the bottom center of the two limit blocks (5). Two positioning plates (16) are connected to one side of the limit block (5). The positioning plates (16) are detachably connected to the side wall of the mounting block (6).

2. The copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble, as described in claim 1, is characterized in that... One end of the rotating rod (11) is fixedly connected to a positioning circular plate (13), and the positioning circular plate (13) is fixedly connected to the side wall of the blade (2) by bolts.

3. The copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble, as described in claim 1, is characterized in that... The cutting frame (4) has an arc-shaped groove (8) at the center of its inner bottom that is adapted to the blade (2).

4. The copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble, as described in claim 2, is characterized in that... Each of the two rotating rods (11) is fixedly connected to a limiting circular plate (12) on the side away from each other. The diameter of the limiting circular plate (12) is larger than the diameter of the rotating rod (11).

5. The copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble, as described in claim 3, is characterized in that... The mounting block (6) has positioning holes (7) on both sides of its top, and positioning rods (14) that are compatible with the positioning holes (7) are fixedly connected to both sides of its bottom.

6. The copper tube end processing and cutting device for air conditioner evaporators that is easy to disassemble and assemble, as described in claim 5, is characterized in that... The positioning plate (16) has a positioning screw (17) with one end threaded through the positioning plate (16) on one side, and the mounting block (6) has several threaded holes (9) that are compatible with the positioning screw (17) on one side.

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