Flat cutter device for cutting micro-channel aluminum flat tube

Abstract

The utility model discloses a flat cutter device for cutting a micro-channel aluminum flat tube, which belongs to the field of micro-channel aluminum flat tube processing, and comprises a flat cutter assembly, the flat cutter assembly comprises a cutter rest, a blade and a top plate, the cutter rest is of a block structure, the bottom surface of the cutter rest is provided with a mounting groove, and the mounting groove penetrates through the cutter rest along the length direction of the cutter rest; the blade is a rectangular sheet body and comprises a cutting edge part, the blade is mounted in the mounting groove, and the cutting edge part protrudes out of the bottom surface of the tool rest; the bottom face of the tool rest is further provided with two positioning grooves which are symmetrically formed in the two sides of the mounting groove, the two top plates are arranged in the two positioning grooves respectively, guide columns are arranged in the positioning grooves, penetrating holes are formed in the top plates, the guide columns are inserted into the penetrating holes in a penetrating mode, the top plates are in sliding fit with the guide columns, and springs are arranged on the peripheries of the guide columns in a sleeving mode. And the spring is positioned between the top plate knife rests, so that the finished product quality of the micro-channel aluminum flat tube can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of microchannel aluminum flat tube processing technology, specifically relating to a flat cutting device for cutting microchannel aluminum flat tubes. Background Technology

[0002] Condensers and evaporators are key components of automotive air conditioning heat exchangers. Typically, both condensers and evaporators are assembled from multiple fixed-length microchannel aluminum alloy flat tubes. This microchannel aluminum flat tube structure improves the heat dissipation performance of the condenser and evaporator. To ensure the microchannel aluminum flat tubes meet operational requirements, they usually need to be cut and processed.

[0003] Currently, when cutting microchannel aluminum flat tubes, a circular blade cutting device is commonly used. Figure 1 As shown, the conventional circular cutter cutting device 200 includes two circular cutters 201 symmetrically arranged on both sides of the microchannel aluminum flat tube. The two circular cutters 201 rotate in opposite directions. When the two circular cutters 201 rotate and move along the width direction of the microchannel aluminum flat tube 202, they can cut the microchannel aluminum flat tube 202 to obtain a microchannel aluminum flat tube with dimensions that meet the usage requirements. However, when the circular cutters 201 of the conventional circular cutter cutting device 200 perform rolling cuts on the microchannel aluminum flat tube 202, the microchannel aluminum flat tube 202 is prone to deformation due to uneven force, resulting in a decrease in the quality of the finished microchannel aluminum flat tube. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a flat cutting device for cutting microchannel aluminum flat tubes. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] In the first aspect, this utility model provides a flat cutting device for cutting microchannel aluminum flat tubes, including a flat cutting assembly. The flat cutting assembly includes a blade holder, a blade and a top plate. The blade holder is a block structure. The bottom surface of the blade holder is provided with a mounting groove. The mounting groove extends through the blade holder along the length direction. The blade is a rectangular sheet body. The blade includes a cutting edge. The blade is installed in the mounting groove and the cutting edge protrudes from the bottom surface of the blade holder.

[0006] The bottom surface of the tool holder is also provided with two positioning grooves, which are symmetrically arranged on both sides of the mounting groove. There are two top plates, which are respectively set in the two positioning grooves. There are guide posts in the positioning grooves. There are through holes in the top plates. The guide posts are inserted into the through holes. The top plates and guide posts are in sliding fit. A spring is sleeved on the outer periphery of the guide posts. The spring is located between the top plate and the tool holder.

[0007] When the spring is in a free state, the distance between the bottom surface of the top plate and the bottom surface of the tool holder is greater than the distance between the cutting edge and the bottom surface of the tool holder. When the top plate moves toward the bottom of the positioning groove, it compresses the spring.

[0008] In one embodiment of this utility model, two flat cutting blade assemblies are provided, and the two flat cutting blade assemblies are symmetrically arranged on both sides of the microchannel aluminum flat tube.

[0009] In one embodiment of this utility model, the flat cutter assembly further includes a pressure plate;

[0010] The mounting slot includes an upper slot and a lower slot, which are connected. The width of the lower slot is smaller than that of the upper slot. The blade is located in both the upper and lower slots. The pressure plate is located in the upper slot and is fastened to the slot wall of the upper slot. The blade is pressed between the pressure plate and the slot wall of the upper slot.

[0011] In one embodiment of the present invention, the flat cutter assembly further includes a first screw, a first screw hole is provided on the groove wall of the upper groove, a first hole is provided on the pressure plate, and a second hole is provided on the blade. The first screw passes through the first hole and the second hole in sequence and is threadedly connected to the first screw hole to press the blade between the pressure plate and the groove wall of the upper groove.

[0012] In one embodiment of the present invention, the side of the tool holder is provided with a mounting hole, which extends along the width direction of the tool holder into the upper groove, and the first screw passes through the mounting hole and is installed into the first screw hole;

[0013] Multiple mounting holes are provided, and these mounting holes are arranged sequentially along the length of the tool holder. Multiple first screws are provided, and each of the multiple first screws is installed in one of the multiple mounting holes.

[0014] In one embodiment of this utility model, the second hole is an elongated hole provided along the height direction of the tool holder;

[0015] The flat cutter assembly also includes a second screw, and the cutter holder is also provided with a second screw hole. The second screw hole is set along the height direction of the cutter holder. The second screw and the second screw hole are threaded together, and the front end of the second screw abuts against the top surface of the blade.

[0016] In one embodiment of the present invention, the flat cutter assembly further includes a third screw, the bottom of the positioning groove is provided with a third screw hole, the top plate is provided with a third hole, and the third screw passes through the third hole and the third screw hole for threaded connection.

[0017] In one embodiment of this utility model, the top plate has multiple perforations, and the multiple perforations are symmetrically arranged on both sides of the third hole, with a guide post inserted in each perforation.

[0018] In one embodiment of the present invention, the flat cutting blade assembly further includes a driver connected to the blade holder, the driver being used to drive the blade holder to move.

[0019] In one embodiment of this utility model, the tool holder is further provided with two connecting ears, which are symmetrically arranged along the width direction of the tool holder, and each connecting ear is provided with a pin hole for connecting with the driver.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] In the above-mentioned solution of this application, the flat cutting device includes a flat cutting assembly, which includes a blade holder, a blade, and a top plate. The blade holder is a block structure with a mounting groove on its bottom surface. The mounting groove extends through the blade holder along its length. The blade is a rectangular piece with a cutting edge. The blade is installed in the mounting groove, and the cutting edge protrudes from the bottom surface of the blade holder. The bottom surface of the blade holder also has two positioning grooves, which are symmetrically arranged on both sides of the mounting groove. There are two top plates, which are respectively set in the two positioning grooves. A guide post is provided in the positioning groove. The top plate has a through hole, and the guide post is inserted into the through hole. The top plate and the guide post are slidably fitted. A spring is sleeved on the outer periphery of the guide post, and the spring is located between the top plate and the blade holder. When the spring is in a free state, the distance between the bottom surface of the top plate and the bottom surface of the blade holder is greater than the distance between the cutting edge and the bottom surface of the blade holder. When the top plate moves toward the bottom of the positioning groove, it compresses the spring. This structure offers several advantages. First, the rectangular blade allows for seamless cutting of the microchannel aluminum flat tube using a flat-cutting assembly. This avoids uneven stress distribution across the tube caused by rolling cutting, reducing deformation and improving the final product quality. Second, during cutting, the blade holder moves towards the microchannel aluminum flat tube. Simultaneously, the top plate contacts the tube's surface and moves away from the tube to compress the spring. The spring applies an elastic force to the top plate, pressing it firmly against the tube surface. This enhances stability, further reducing deformation and improving overall product quality. Furthermore, after cutting, the blade holder moves the blade away from the microchannel aluminum flat tube. At this point, the blade separates from the surface of the microchannel aluminum flat tube, while the top plate, under the elastic action of the spring, remains pressed against the surface of the microchannel aluminum flat tube. This allows the top plate to apply pressure to the microchannel aluminum flat tube during blade retraction, further limiting its deformation and preventing excessive deformation due to uneven force during blade retraction, which could affect the finished product quality. Additionally, the guide posts guide and limit the movement of the top plate, improving its stability and thus the overall stability of the flat cutting device.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a circular knife cutting device in the prior art;

[0024] Figure 2 This is a schematic diagram of the flat cutting blade assembly in this utility model;

[0025] Figure 3 This is a front view of the flat cutting blade assembly in this utility model;

[0026] Figure 4 yes Figure 3 Sectional view along line RR;

[0027] Figure 5 yes Figure 3 Cross-sectional view along line NN;

[0028] Figure 6 This is a top view of the flat cutting blade assembly in this utility model;

[0029] Figure 7 yes Figure 6 Cross-sectional view along line PP;

[0030] Figure 8 This is a schematic diagram of the cutting process using two flat cutting blade assemblies in this utility model.

[0031] Reference numerals: 1-tool holder, 2-blade, 3-top plate, 4-spring, 5-pressure plate, 6-first screw, 7-mounting hole, 8-second screw, 9-third screw, 10-connecting lug, 11-pin hole, 12-microchannel aluminum flat tube, 13-guide post. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0033] Please see Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7This utility model provides a flat cutting device for cutting microchannel aluminum flat tubes, including a flat cutting assembly. The flat cutting assembly includes a blade holder 1, a blade 2, and a top plate 3. The blade holder 1 is a block structure, and the bottom surface of the blade holder 1 is provided with a mounting groove that extends through the blade holder 1 along its length. The blade 2 is a rectangular sheet, and the blade 2 includes a cutting edge. The blade 2 is installed in the mounting groove, and the cutting edge protrudes from the bottom surface of the blade holder 1. The bottom surface of the blade holder 1 is also provided with two positioning grooves, which are symmetrically arranged. On both sides of the mounting groove, there are two top plates 3, which are respectively set in two positioning grooves. A guide post 13 is provided in the positioning groove. The top plate 3 has a through hole, and the guide post 13 is inserted into the through hole. The top plate 3 and the guide post 13 are slidably fitted. A spring 4 is sleeved on the outer periphery of the guide post 13. The spring 4 is located between the top plate 3 and the tool holder 1. When the spring 4 is in a free state, the distance between the bottom surface of the top plate 3 and the bottom surface of the tool holder 1 is greater than the distance between the cutting edge and the bottom surface of the tool holder 1. When the top plate 3 moves toward the bottom of the positioning groove, it compresses the spring 4.

[0034] In some embodiments of this application, the distance between the cutting edge and the bottom surface of the tool holder 1 is 0.5 mm, and the distance between the bottom surface of the top plate 3 and the bottom surface of the tool holder 1 is 2 mm.

[0035] In some embodiments of this application, the thickness of the microchannel aluminum flat tube is 0.5 mm.

[0036] In the above-described scheme of this application, the flat cutting device includes a flat cutting assembly, which includes a blade holder 1, a blade 2, and a top plate 3. The blade holder 1 is a block structure, and its bottom surface has a mounting groove that extends through the blade holder 1 along its length. The blade 2 is a rectangular piece, including a cutting edge, which is installed in the mounting groove and protrudes from the bottom surface of the blade holder 1. The bottom surface of the blade holder 1 also has two positioning grooves, which are symmetrically arranged on both sides of the mounting groove. Two plates 3 are provided, each set in a positioning groove. A guide post 13 is provided in each positioning groove. The top plate 3 has a through hole, and the guide post 13 is inserted into the through hole. The top plate 3 and the guide post 13 are in sliding fit. A spring 4 is sleeved around the outer periphery of the guide post 13, located between the top plate 3 and the blade holder 1. When the spring 4 is in a free state, the distance between the bottom surface of the top plate 3 and the bottom surface of the blade holder 1 is greater than the distance between the cutting edge and the bottom surface of the blade holder 1. When the top plate 3 moves towards the bottom of the positioning groove, it compresses the spring 4. With this structure, firstly, the blade 2 is a rectangular piece. When the flat cutting blade assembly cuts the microchannel aluminum flat tube, the rectangular piece can cut the entire microchannel aluminum flat tube, thus avoiding uneven stress on different parts of the flat tube caused by rolling cutting, reducing the deformation of the microchannel aluminum flat tube, and thus improving the finished quality of the microchannel aluminum flat tube. Secondly, during the cutting process, the tool holder 1 drives the blade 2 towards the microchannel aluminum flat tube for cutting. At this time, the top plate 3 abuts against the surface of the microchannel aluminum flat tube and moves away from the microchannel aluminum flat tube to compress the spring 4. The spring 4 can apply an elastic force to the top plate 3 to press the top plate 3 tightly against the surface of the microchannel aluminum flat tube, thereby improving the stability of the microchannel aluminum flat tube, further reducing the degree of deformation of the microchannel aluminum flat tube, and improving the finished product quality of the microchannel aluminum flat tube. Furthermore, after the cutting is completed, the tool holder 1 drives the blade 2 away from the microchannel aluminum flat tube. At this time, the blade 2 first separates from the surface of the microchannel aluminum flat tube, while the top plate 3, under the elastic action of the spring 4, still presses against the surface of the microchannel aluminum flat tube. Thus, when the blade 2 retracts, the top plate 3 can be used to apply pressure to the microchannel aluminum flat tube to further limit the deformation of the microchannel aluminum flat tube, avoiding large deformation of the microchannel aluminum flat tube due to uneven force when the blade 2 retracts, which would affect the finished product quality of the microchannel aluminum flat tube. In addition, by guiding and limiting the movement of the top plate 3 through the guide post 13, the stability of the top plate 3 can be improved, thereby improving the overall stability of the flat cutting device.

[0037] In one embodiment of this utility model, such as Figure 8 As shown, there are two flat cutting blade assemblies, which are symmetrically arranged on both sides of the microchannel aluminum flat tube 12. This structure allows for simultaneous cutting from both the top and bottom sides of the microchannel aluminum flat tube 12 by the two flat cutting blade assemblies. This reduces the cutting depth of each flat cutting blade assembly, preventing excessive cutting from increasing the deformation of the microchannel aluminum flat tube 12 and affecting the final product quality. It also makes cutting more convenient.

[0038] In some embodiments of this application, such as Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the flat cutter assembly also includes a pressure plate 5; the mounting groove includes an upper groove and a lower groove, which are connected. The width of the lower groove is smaller than that of the upper groove. The blade 2 is located in both the upper and lower grooves. The pressure plate 5 is located in the upper groove, and it is securely connected to the groove wall of the upper groove. The blade 2 is pressed between the pressure plate 5 and the groove wall of the upper groove. This structure makes the installation of the blade 2 more convenient and stable.

[0039] In some embodiments of this application, such as Figure 5 As shown, the flat cutter assembly also includes a first screw 6, a first screw hole on the groove wall of the upper groove, a first hole on the pressure plate 5, and a second hole on the blade 2. The first screw 6 passes through the first hole and the second hole in sequence and is threadedly connected to the first screw hole to press the blade 2 between the pressure plate 5 and the groove wall of the upper groove. With this structure, when the first screw 6 and the first screw hole are threadedly connected, the pressure plate 5 presses the blade 2 tightly against the groove wall of the mounting groove.

[0040] In some embodiments of this application, such as Figure 2 and Figure 5 As shown, the tool holder 1 has mounting holes 7 on its side, extending along the width of the tool holder 1 into the upper groove. A first screw 6 passes through the mounting hole 7 and is installed into a first screw hole. Multiple mounting holes 7 are provided, arranged sequentially along the length of the tool holder 1. Multiple first screws 6 are provided, each installed into one of the multiple mounting holes 7. With this structure, when the mounting holes 7 extend along the width of the tool holder 1 into the upper groove, the first screws 6 can be inserted through the mounting holes 7. The inserted first screw 6 can then pass through the first hole and the second hole sequentially and be threaded into the first screw hole to press the blade 2 between the pressure plate 5 and the groove wall of the upper groove. Using multiple first screws 6 for fastening further improves the stability of the blade 2 installation.

[0041] In some embodiments of this application, multiple first holes, second holes, and first screw holes are provided, and a first hole, a second hole, and a first screw hole are arranged coaxially in sequence, with multiple first screws 6 and multiple first screw holes corresponding one-to-one.

[0042] In some embodiments of this application, the first screw 6 is an M5 screw.

[0043] In some embodiments of this application, such as Figure 6 and Figure 7As shown, the second hole is an elongated hole along the height direction of the tool holder 1; the flat cutting blade assembly also includes a second screw 8, and the tool holder 1 is also provided with a second screw hole, which is arranged along the height direction of the tool holder 1. The second screw 8 and the second screw hole are threaded together, and the front end of the second screw 8 abuts against the top surface of the blade 2. With this structure, when the second hole is an elongated hole arranged along the height direction of the tool holder 1, the blade 2 can move along the height direction of the tool holder 1 to adjust the distance between the cutting edge and the microchannel flat tube, thereby improving the applicability of the blade 2. When the second screw 8 is screwed relative to the second screw hole, pressure can be applied to the top surface of the blade 2 to ensure that the blade 2 remains horizontal and to limit the upward movement of the blade 2, thereby improving the stability of the blade 2.

[0044] In some embodiments of this application, the second screw 8 is an M6 screw.

[0045] In some embodiments of this application, such as Figure 6 As shown, there are multiple second screw holes and multiple second screws 8. The multiple second screw holes are arranged sequentially along the length direction of the blade 2. The multiple second screws 8 and the multiple second screw holes correspond one-to-one. By pressing the top surface of the blade 2 with the multiple second screws 8, it can be further ensured that the blade 2 remains horizontal and restrict the upward movement of the blade 2, thereby improving the stability of the blade 2.

[0046] In some embodiments of this application, such as Figure 4 As shown, the flat cutter assembly also includes a third screw 9. The bottom of the positioning groove has a third screw hole, and the top plate 3 has a third hole. The third screw 9 passes through the third hole and is threadedly connected to it. With this structure, when the third screw 9 passes through the third hole and is threadedly connected to it, the top plate 3 can be connected to the cutter holder 1, preventing the top plate 3 from falling off the cutter holder 1 and improving the stability of the top plate 3 installation.

[0047] In some embodiments of this application, the third screw 9 is an M4 screw.

[0048] In some embodiments of this application, such as Figure 4As shown, the bottom surface of the top plate 3 has a groove. The third screw 9 includes a nut and a stud. The stud has external threads, and the nut is located in the groove. The stud passes through the third hole and is threadedly connected to the three screw holes, with a clearance fit between the third hole and the stud. Thus, when the top plate 3 moves towards the tool holder 1 to compress the spring 4, the positions of the nut and the stud remain unchanged, and the top plate 3 slides relative to the guide post 13. At this time, in order to prevent the nut from protruding from the groove and pressing against the microchannel flat tube when the top plate 3 moves, in this embodiment, when the spring 4 is in a free state, the distance between the bottom surface of the nut and the bottom surface of the top plate 3 is greater than the preset movement distance of the top plate 3, that is, the difference between the depth of the groove and the thickness of the nut is greater than the preset movement distance of the top plate 3. Specifically, when the spring 4 is in a free state, the distance between the bottom surface of the top plate 3 and the cutting edge along the height direction of the tool holder 1 is less than the difference between the depth of the groove and the thickness of the nut.

[0049] In some embodiments of this application, the tool holder 1 is provided with a positioning hole, the upper end of the guide post 13 is interference-fitted with the positioning hole so that the guide post 13 is fixed on the tool holder 1, and the lower end of the guide post 13 is clearance-fitted with the through hole of the top plate 3 so that the top plate 3 can slide on the guide post 13.

[0050] In some embodiments of this application, the top plate 3 has multiple perforations, which are symmetrically arranged on both sides of the third hole, and a guide post 13 is inserted into each perforation. This structure, using multiple guide posts 13 for limiting movement, can improve the stability of the top plate 3's movement.

[0051] In some embodiments of this application, the flat cutter assembly further includes a driver connected to the cutter holder 1, which drives the cutter holder 1 to move. With this structure, the driver drives the cutter holder 1 to move toward or away from the microchannel flat tube, thereby enabling the cutting action of the blade 2.

[0052] In some embodiments of this application, the driver can be a commonly used drive mechanism such as a motor or cylinder.

[0053] In some embodiments of this application, the tool holder 1 is further provided with two connecting ears 10, which are symmetrically arranged along the width direction of the tool holder 1. Each connecting ear 10 is provided with a pin hole 11 for connecting with the driver. This structure makes the connection between the driver and the tool holder 1 more convenient and stable.

[0054] In some embodiments of this application, when the driver is a motor, a pin is provided on the motor shaft of the motor, and the pin is inserted into the pin holes 11 of the two connecting ears 10 for fixation. When the driver is a cylinder, a pin is provided on the telescopic rod of the cylinder, and the pin is inserted into the pin holes 11 of the two connecting ears 10 for fixation.

[0055] In some embodiments of this application, the installation and cutting process of the flat cutter device is as follows:

[0056] First, install the blade 2 and the pressure plate 5 into the mounting slot of the tool holder 1. Then, pass the first screw 6 through the first hole on the pressure plate 5 and the second hole on the blade 2 in sequence and thread it into the first screw hole to fix the blade 2 and the pressure plate 5 on the tool holder 1.

[0057] Next, adjust the blade 2 by adjusting the second screw 8, and keep the distance between the blade edge and the bottom surface of the blade holder 1 at about 0.5mm.

[0058] Next, the guide post 13 is first installed into the top plate 3, and the spring 4 is put on it. Then, it is inserted into the corresponding position of the tool holder 1 and fixed and limited by the third screw 9; so that the distance between the bottom surface of the top plate 3 and the tool holder 1 is kept at about 2mm.

[0059] Then, the cylinder is activated, which drives the two flat cutting blade assemblies located on the upper and lower sides of the microchannel aluminum flat tube to move towards each other. When the flat cutting blade assemblies move, the top plate 3 on the blade holder 1 first presses down on the aluminum flat tube simultaneously. Then the upper and lower flat cutting blade assemblies continue to move towards each other, causing the spring 4 to be compressed. After that, the blade 2 begins to contact and cut the aluminum flat tube.

[0060] Afterwards, when the blade 2 cuts through the 0.5mm wall thickness of the microchannel aluminum flat tube, the cylinder returns, causing the tool holder 1 to retract. At this time, the top plate 3 is still pressed against the aluminum flat tube by the force of the spring 4. The cutting edge of the blade 2 disengages first, and when it continues to retract, the entire tool holder 1 completely leaves the flat tube.

[0061] Finally, after the cylinder completes its operation, the microchannel aluminum flat tube can be broken by applying external force. At this time, the cut end face of the aluminum flat tube is flat and the hole surface is free of depression.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A flat cutter apparatus for cutting micro-channel aluminum flat tubes, characterized by, The flat cutting knife assembly comprises a knife holder, a blade and a top plate, the knife holder is a block structure, the bottom surface of the knife holder is provided with a mounting groove, the mounting groove is arranged through the length direction of the knife holder, the blade is a rectangular sheet, the blade comprises a blade edge part, the blade is mounted in the mounting groove and the blade edge part protrudes from the bottom surface of the knife holder; The bottom surface of the knife holder is also provided with two positioning grooves, the two positioning grooves are symmetrically arranged on both sides of the mounting groove, the top plate is provided with two, the two top plates are respectively arranged in the two positioning grooves, the positioning groove is provided with a guide column, the top plate is provided with a through hole, the guide column is inserted into the through hole, the top plate and the guide column are in sliding fit, the guide column is provided with a spring, the spring is located between the top plate and the knife holder; When the spring is in a free state, the distance between the bottom surface of the top plate and the bottom surface of the knife holder is greater than the distance between the blade edge part and the bottom surface of the knife holder, and the top plate moves towards the bottom of the positioning groove and compresses the spring.

2. The flat cut knife apparatus for cutting a micro-channell aluminum flat tube of claim 1, wherein, The flat cutting knife assembly is provided with two, and the two flat cutting knife assemblies are symmetrically arranged on both sides of the micro-channel aluminum flat tube.

3. The flat cut knife apparatus for cutting a micro-channell aluminum flat tube according to claim 1 or 2, characterized in that, The flat cutting knife assembly further comprises a pressing plate. The mounting groove comprises an upper groove part and a lower groove part, the upper groove part and the lower groove part are communicated, the groove width of the lower groove part is smaller than the groove width of the upper groove part, the blade is located in the upper groove part and the lower groove part at the same time, the pressing plate is located in the upper groove part, the pressing plate and the groove wall of the upper groove part are tightly connected, and the blade is tightly pressed between the pressing plate and the groove wall of the upper groove part.

4. The flat cut knife apparatus for cutting a micro-channell aluminum flat tube of claim 3, wherein, The flat cutting knife assembly further comprises a first screw, the groove wall of the upper groove part is provided with a first screw hole, the pressing plate is provided with a first hole, the blade is provided with a second hole, the first screw passes through the first hole and the second hole in sequence and is threadedly connected with the first screw hole, so as to tightly press the blade between the pressing plate and the groove wall of the upper groove part.

5. The flat cut knife apparatus for cutting a micro-channell aluminum flat tube of claim 4, wherein, The side surface of the knife holder is provided with a mounting hole, the mounting hole extends into the upper groove part along the width direction of the knife holder, and the first screw is installed into the first screw hole through the mounting hole; The mounting hole is provided with a plurality of mounting holes, and the plurality of mounting holes are sequentially arranged along the length direction of the knife holder, and the first screw is provided with a plurality of first screws, and the plurality of first screws are respectively installed in the plurality of mounting holes.

6. The flat cut knife apparatus for cutting a micro-channell aluminum flat tube of claim 4, wherein, The second hole is an elongated hole arranged along the height direction of the knife holder; The flat cutting knife assembly further comprises a second screw, the knife holder is further provided with a second screw hole, the second screw hole is arranged along the height direction of the knife holder, the second screw is threadedly connected with the second screw hole, and the front end of the second screw and the top surface of the blade are in abutment.

7. The flat cut knife apparatus for cutting a micro-channeld aluminum flat tube according to claim 1 or 2, wherein The flat cutting knife assembly further comprises a third screw, the bottom of the positioning groove is provided with a third screw hole, the top plate is provided with a third hole, and the third screw is threadedly connected with the third screw hole through the third hole and the third screw hole.

8. The flat cut knife apparatus for cutting a micro-channell aluminum flat tube of claim 7, wherein, The through hole on the top plate is provided with a plurality of through holes, and the plurality of through holes are symmetrically arranged on both sides of the third hole, and each through hole is inserted with a guide column.

9. The flat cut knife apparatus for cutting a micro-channell aluminum flat tube according to claim 1 or 2, wherein, The flat cutting knife assembly further comprises a driver connected with the knife holder, and the driver is used to drive the knife holder to move.

10. The flat cut knife apparatus for cutting a micro-channeled aluminum flat tube of claim 9, wherein, The knife holder is further provided with two connecting ears, the two connecting ears are symmetrically arranged along the width direction of the knife holder, and the two connecting ears are both provided with a pin hole used for connecting with the driver.

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