A kind of foam aluminum fixed length cutting device
By designing a foam aluminum fixed-length cutting device, the pore quality is judged by sealed airbag and airbag system, the problem of pore sealing after cutting is solved, and efficient fixed-length cutting and pore connectivity test of foam aluminum is achieved, which improves the cutting quality and pores Openness.
Patent Information
- Application Number
- CN202411150465.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2044-08-21
AI Technical Summary
When cutting open-pore foam aluminum profiles, shear force or heat will cause the outer wall of the pore at the cut, causing the pore closure or blockage, affecting the pore connectivity and quality of the product.
A foam aluminum fixed-length cutting device is designed, including an operating bench, cutting unit, positioning base, isolation unit, airbag, air pressure sensor, clamping airbag, calibration laser and discharge channel, and fitting with the cutting object by sealing the airbag. , form an isolated space, use gas flow to judge the pore mass, and improve cutting stability by clamping the airbag, and accurately control the cutting distance.
The fixed-length cutting and pore connectivity test of foam aluminum are achieved, which improves the cutting quality and pore connectivity efficiency, and ensures the openness of pores and product performance.
Smart Images
Figure CN118650256B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of aluminum alloy production and processing, and in particular to a foam aluminum fixed-length cutting device. Background Art
[0002] Foamed aluminum is a material with unique structure and properties. It is made by adding additives to pure aluminum or aluminum alloy and then foaming it. It has the characteristics of metal and bubbles. This material has broad application prospects in many fields due to its light weight, high specific stiffness, good damping and shock absorption performance, excellent electromagnetic shielding performance, good thermal properties and easy processing.
[0003] Foam aluminum includes closed-cell and open-cell types. In the fields of heat exchange, fluid filtration or fluid distribution, open-cell foam aluminum is more outstanding. Its pore connectivity is its most important characteristic. Since the density of foam aluminum is only 0.1-0.4 times that of metallic aluminum, open-cell foam aluminum uses two aluminum plates to cover the upper and lower surfaces to form a sandwich structure of foam aluminum to improve its rigidity, stability and load-bearing capacity. However, when cutting open-cell foam aluminum profiles, the shear force or heat generated during cutting will cause the outer wall of the pores at the incision to deform, resulting in pore closure or blockage, affecting the pore connectivity or connectivity quality of the product. Summary of the invention
[0004] The invention provides a foam aluminum fixed-length cutting device, which can not only cut the foam aluminum to a fixed length, but also test the pore connectivity of the cut foam aluminum.
[0005] In order to achieve the above object, the present invention provides the following technical solutions:
[0006] A foam aluminum fixed-length cutting device, comprising:
[0007] An operating frame and a cutting unit, wherein the cutting unit is slidably assembled on the top of the operating frame; a positioning base is arranged on the operating frame, and the outer wall of the positioning base is provided with an assembly groove for the cutting object to enter; an isolation unit is installed inside the assembly groove, and the isolation unit divides the assembly groove into a test cavity and an exposure cavity. After the fixed length is confirmed, the free end of the cutting object is located in the test cavity, and after cutting, the cutting end of the cutting object is located in the exposure cavity, and the exposure cavity and the test cavity are communicated by using the pores of the cutting object; a first gas source for injecting gas into the test cavity is designed on the operating frame.
[0008] Furthermore, the isolation unit includes two limit members, which are integrated with the positioning base, and a sealing airbag is installed inside the limit member. After the cutting object is inserted into the assembly groove at a fixed length, the two sealing airbags are wrapped around the outside of the cutting object, and the outer walls of the two sealing airbags can fit tightly against the outer walls of the cutting object after expansion. A second air source for inflating the two sealing airbags is designed on the operating table, and the two sealing airbags form an isolation space between the cutting object and the assembly groove after being inflated.
[0009] Furthermore, a limit unit for fixed-length measurement is installed inside the test chamber, and an air pressure sensor is installed on the inner wall of the test chamber. After fixed-length cutting, the air pressure sensor works, and the first gas source injects high-pressure gas into the test chamber. The air pressure sensor does not interfere with the entry and exit of the cutting unit.
[0010] Furthermore, a clamping airbag is fixedly installed in the isolation space, and the second gas source can inject gas into the interior of the clamping airbag, so that the clamping airbag is inflated.
[0011] Furthermore, the limiting unit includes a bearing seat installed on the inner wall of the test cavity, a baffle is installed on the outer wall of the bearing seat through a pin shaft, a torsion spring is fixedly installed between the baffle and the bearing seat, a pressure sensor is installed on the outer wall of the baffle facing the isolation space, and a calibration laser is installed on the test cavity to verify whether the baffle remains vertical.
[0012] Furthermore, an outer wall of the positioning base is provided with a discharge channel connected to the test chamber, and the cutting object can break through the limit of the baffle and pass through the discharge channel for discharge. A valve groove connected to the discharge channel is provided on the top of the positioning base, and a valve plate is controllably slidably installed in the valve groove. When the valve plate is moved downward to a preset position, the discharge channel can be closed. An air intake channel is provided on the valve plate, and both ends of the air intake channel are respectively associated with the first air source and the test chamber.
[0013] Furthermore, the calibration laser includes a photosensitive element installed inside the baffle, a cylindrical groove is provided on the outer wall of the baffle, and light inside the cylindrical groove can be received by the photosensitive element. A laser emitter is installed on the inner wall of the test cavity. When the baffle is in a vertical state, the central axis of the cylindrical groove is colinear with the laser path of the laser emitter, and the laser emitted by the laser emitter can enter the cylindrical groove and be received by the photosensitive element. When the baffle is in an inclined state, the cylindrical groove limits the entry of the laser.
[0014] Furthermore, a square corrugated pipe is fixedly installed on the outer wall of the positioning base, an independent base is fixedly installed on one end of the square corrugated pipe away from the positioning base, the independent base is slidably installed on the operating table, a cutting hole is designed on the independent base, the output end of the cutting unit can enter the cutting hole, the interior of the independent base and the square corrugated pipe are both connected to the exposure cavity, an injection groove is opened on the top of the independent base, and a cutting liquid pump connected to the injection groove is installed on the operating table.
[0015] Furthermore, a gantry is numerically controlled and slidably mounted on the operating table, and the cutting unit is assembled on the gantry.
[0016] Furthermore, the cutting unit includes a guide rail installed on the gantry, a frame is slidably installed on the guide rail, a cutting gun is installed on the frame, a controller for controlling the sliding of the frame and the cutting gun is installed on the gantry, and a plasma power supply is also installed on the operating table.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] By designing two sealing airbags, the outer walls of the two sealing airbags can fit tightly against the outer wall of the cutting object after expansion, and can also fit against the outer walls of the limiter and the positioning base. Therefore, when the sealing airbags are tightly fitted against the cutting object, the two sealing airbags can form an isolation space between the cutting object and the assembly groove, and one of the sealing airbags will form a test cavity between the assembly groove and the cutting object. At this time, the test cavity only has a pressure relief port, which is the pore on the cutting object. When the gas inside the test cavity flows into the cutting object through the pressure relief port, part of the gas will flow out from both sides. By designing the isolation space, the gas flowing out from both sides can be transferred back to the cutting object through the pores and discharged through the pores at the cutting end of the cutting object. That is, the efficiency of gas discharge or circulation can be used to judge the quality of the pores at the cutting end of the cutting object.
[0019] By providing a clamping airbag, the cutting object can be effectively clamped, the stability of the cutting object during cutting is improved, and the cutting quality is improved.
[0020] Through the coordination of the baffle, pressure sensor and calibration laser, the fixed-length cutting distance of the foam aluminum can be accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A schematic diagram of the external three-dimensional structure of the present invention;
[0022] Figure 2 It is a schematic diagram of the external three-dimensional structure of the positioning base in the present invention;
[0023] Figure 3For the present invention Figure 2 A front view of
[0024] Figure 4 For the present invention Figure 3 The schematic diagram of the structure is a cross-section at AA in the middle;
[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the structure cut away at CC in the middle;
[0026] Figure 6 It is a schematic diagram of the internal structure of the positioning base in the present invention;
[0027] Figure 7 For the present invention Figure 6 Enlarged view of point D in the middle.
[0028] In the figure: 1. Independent base; 2. Positioning base; 3. Cutting gun; 4. Square corrugated pipe; 5. Valve plate; 7. Air inlet channel; 8. Valve slot; 9. Discharge channel; 11. Air pressure sensor; 12. Controller; 13. Injection slot; 14. Clamping airbag; 15. Sealing airbag; 16. Laser transmitter; 17. Cylindrical slot; 18. Photosensitive element; 19. Baffle; 20. Torsion spring; 21. Test cavity; 22. Free end; 23. Exposure cavity; 24. Limiting piece; 25. Operating table; 26. Gantry; 27. Guide rail; 28. Bearing seat. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] In the present invention, the foamed aluminum of the sandwich structure is hereinafter collectively referred to as foamed aluminum.
[0031] See also Figures 1 to 7 The present invention provides a technical solution: a foam aluminum fixed-length cutting device, comprising:
[0032] An operating stand 25 and a cutting unit, wherein the cutting unit is slidably assembled on the top of the operating stand 25; a positioning base 2 is arranged on the operating stand 25, and an outer wall of the positioning base 2 is provided with an assembly groove for the cutting object to enter; an isolation unit is installed inside the assembly groove, and the isolation unit divides the assembly groove into a test cavity 21 and an exposure cavity 23. After the fixed length is confirmed, the free end 22 of the cutting object is located in the test cavity 21, and after cutting, the cut end of the cutting object is located in the exposure cavity 23, and the exposure cavity 23 and the test cavity 21 are communicated by the pores of the cutting object; a first gas source for injecting gas into the test cavity 21 is designed on the operating stand 25.
[0033] In the prior art, since the cutting object of the sandwich structure has many interconnected pores inside, these pores play many roles in energy absorption and sound absorption. Therefore, it is necessary to ensure the pore connectivity or connectivity quality of the cutting object after cutting, and the thin-walled characteristics of the pores are more susceptible to the heat of mechanical cutting, resulting in the blocking or closing of the pores. In the present invention, by designing an isolation unit, the assembly groove will be divided into a test cavity 21 and an exposure cavity 23, and the test cavity 21 and the exposure cavity 23 can only be connected through the pores between the two ends of the foam aluminum after cutting. At this time, gas is injected into the test cavity 21, and the pore quality of the foam aluminum cutting end can be determined by observing the air pressure change rate or accumulation rate inside the test cavity 21. If the pore quality of the cutting end is low, the air pressure change rate inside the test cavity 21 will decrease or the accumulation rate will increase.
[0034] By testing the pore quality immediately after cutting, it is possible to respond in time and perform pore grinding and other processing steps.
[0035] Among the more preferred embodiments, the isolation unit includes two limit members 24, which are integrated with the positioning base 2. A sealing airbag 15 is installed inside the limit member 24. After the cutting object is inserted into the assembly groove at a fixed length, the two sealing airbags 15 are wrapped around the outside of the cutting object. The outer walls of the two sealing airbags 15 can fit tightly against the outer walls of the cutting object after expansion. A second air source for inflating the two sealing airbags 15 is designed on the operating platform 25. After the two sealing airbags 15 are inflated, an isolation space is formed between the cutting object and the assembly groove. Please refer to Figures 3 to 5In the present embodiment, two sealing airbags 15 are designed, and the outer walls of the two sealing airbags 15 can fit tightly against the outer wall of the cutting object after expansion, and can fit against the outer wall of the limiter 24 and the positioning base 2 at the same time. Therefore, when the sealing airbags 15 fit tightly against the cutting object, the two sealing airbags 15 can form an isolation space between the cutting object and the assembly groove, and one of the sealing airbags 15 will form a test cavity 21 between the assembly groove and the cutting object. At this time, the test cavity 21 only has a pressure relief port, which is the pore on the cutting object. When the gas inside the test cavity 21 flows into the cutting object through the pressure relief port, part of the gas will flow out from both sides. By designing the isolation space, the gas flowing out from both sides can be transferred back to the cutting object through the pores and discharged through the pores at the cutting end of the cutting object. That is, the efficiency of gas discharge or circulation can be used to judge the quality of the pores at the cutting end of the cutting object.
[0036] On the basis of the isolation unit embodiment, a limit unit for fixed-length measurement is installed inside the test chamber 21, and an air pressure sensor 11 is installed on the inner wall of the test chamber 21. After the fixed-length cutting, the air pressure sensor 11 works, and the first air source injects high-pressure gas into the test chamber 21. The air pressure sensor 11 does not interfere with the entry and exit of the cutting unit. Please refer to Figure 3 and Figure 5 By designing the air pressure sensor 11, the air pressure change inside the test chamber 21 can be known, and the rate of change of the air pressure in unit time can be measured.
[0037] On the basis of the isolation unit embodiment, a clamping airbag 14 is fixedly installed in the isolation space, and a second gas source can inject gas into the interior of the clamping airbag 14, so that the clamping airbag 14 is inflated. In this embodiment, by inflating the clamping airbag 14, the clamping airbag 14 can effectively clamp the cutting object, thereby improving the stability of the cutting object during cutting and improving the cutting quality.
[0038] Furthermore, the limit unit includes a bearing seat 28 mounted on the inner wall of the test cavity 21, a stopper 19 is mounted on the outer wall of the bearing seat 28 through a pin, a torsion spring 20 is fixedly mounted between the stopper 19 and the bearing seat 28, a pressure sensor is mounted on the outer wall of the stopper 19 facing the isolation space, and a calibration laser is mounted on the test cavity 21 to check whether the stopper 19 remains vertical, see Figures 3 to 6 In this embodiment, when the cutting object is inserted into the assembly groove or the test cavity 21, the free end 22 of the cutting object will conflict with the pressure sensor on the outer wall of the baffle 19. At this time, the fixed length limit is completed, but because the baffle 19 is rotatable, it needs to be verified by a calibration laser to ensure the accuracy of the fixed length limit of the cutting object. The baffle 19 is rotatable, which can facilitate the displacement of the cutting object and prevent the baffle 19 from being damaged by hard impact.
[0039] In an environment without interference, the torsion spring 20 can limit the blocking bar 19 to a vertical state.
[0040] Furthermore, a discharge channel 9 connected to the test chamber 21 is provided on the outer wall of the positioning base 2, and the cutting object can break through the limit of the baffle 19 and pass through the discharge channel 9 for discharge. A valve groove 8 connected to the discharge channel 9 is provided on the top of the positioning base 2, and a valve plate 5 is controllably slidably installed in the valve groove 8. When the valve plate 5 moves downward to a preset position, the discharge channel 9 can be closed. An air inlet channel 7 is provided on the valve plate 5, and the two ends of the air inlet channel 7 are respectively associated with the first air source and the test chamber 21. In this embodiment, by designing the discharge channel 9, when the cutting object is cut, the cutting object can be discharged outward through the discharge channel 9, and the existence of the valve plate 5 can close the discharge channel 9, which is convenient for maintaining the integrity of the test chamber 21 and for detecting the pore connectivity or connectivity quality of the cutting object.
[0041] Furthermore, the calibration laser includes a photosensitive element 18 installed inside the baffle 19. A cylindrical groove 17 is provided on the outer wall of the baffle 19. Light inside the cylindrical groove 17 can be received by the photosensitive element 18. A laser emitter 16 is installed on the inner wall of the test cavity 21. When the baffle 19 is in a vertical state, the central axis of the cylindrical groove 17 is colinear with the laser path of the laser emitter 16. The laser emitted by the laser emitter 16 can enter the cylindrical groove 17 and be received by the photosensitive element 18. When the baffle 19 is in an inclined state, the cylindrical groove 17 limits the entry of the laser.
[0042] On the basis of the isolation unit embodiment, a square corrugated pipe 4 is fixedly installed on the outer wall of the positioning base 2, and an independent base 1 is fixedly installed on one end of the square corrugated pipe 4 away from the positioning base 2. The independent base 1 is slidably installed on the operating stand 25. A cutting hole is designed on the independent base 1, and the output end of the cutting unit can enter the cutting hole. The interior of the independent base 1 and the square corrugated pipe 4 are both connected to the exposure cavity 23. An injection tank 13 is opened on the top of the independent base 1, and a cutting liquid pump connected to the injection tank 13 is installed on the operating stand 25. Please refer to Figures 1 to 5 In this embodiment, by cooperating among the positioning base 2, the test cavity 21 and the square corrugated pipe 4, the position of the cutting hole can be adjusted, thereby controlling the fixed length distance of the cutting object. Secondly, the interior of the independent base 1 and the square corrugated pipe 4 will communicate with the exposure cavity 23, and form a new exposure cavity 23, so that the cutting end of the cutting object is kept in the exposure cavity 23.
[0043] Furthermore, a gantry 26 is numerically slidably mounted on the operating platform 25, and a cutting unit is mounted on the gantry 26. The cutting unit includes a guide rail 27 mounted on the gantry 26, a frame is slidably mounted on the guide rail 27, a cutting gun 3 is mounted on the frame, a controller 12 for controlling the sliding of the frame and the cutting gun 3 is mounted on the gantry 26, and a plasma power supply is also mounted on the operating platform 25, see Figure 7 , plasma cutting is used to process the cutting object, the cutting surface is smooth, the thermal deformation is small and the heat affected zone is greatly reduced, avoiding the problems of disconnection, breakage, closure and blockage of pores caused by mechanical cutting, and can improve the cutting quality and pore quality of the open-pore foam aluminum plate. Among them, the plasma power supply serves as the supply end, the gantry 26, the guide rail 27 and the frame constitute the moving displacement component, and the cutting gun 3 serves as the output component.
[0044] By using the above structure, the foam aluminum can be cut to a fixed length and the pore connectivity of the cut foam aluminum can also be tested.
[0045] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.
[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A foam aluminum fixed-length cutting device, characterized in that: include: An operating frame (25) and a cutting unit, wherein the cutting unit is slidably mounted on the top of the operating frame (25); A positioning base (2) arranged on an operating platform (25), wherein an outer wall of the positioning base (2) is provided with an assembly groove for a cutting object to enter; An isolation unit is installed inside the assembly groove, the isolation unit divides the assembly groove into a test cavity (21) and an exposure cavity (23); after the fixed length is confirmed, the free end (22) of the cut object is located in the test cavity (21); after cutting, the cut end of the cut object is located in the exposure cavity (23); the exposure cavity (23) and the test cavity (21) are connected by a pore of the cut object; The operating platform (25) is provided with a first gas source for injecting gas into the test cavity (21).
2. The foam aluminum fixed-length cutting device according to claim 1 is characterized in that: The isolation unit comprises two limit members (24), the limit members (24) are designed to be integrated with the positioning base (2), a sealing airbag (15) is installed inside the limit member (24), after the cutting object is inserted into the assembly groove at a fixed length, the two sealing airbags (15) are wrapped around the outside of the cutting object, and the outer walls of the two sealing airbags (15) can be tightly attached to the outer wall of the cutting object after expansion, and a second air source for inflating the two sealing airbags (15) is designed on the operating platform (25), and the two sealing airbags (15) form an isolation space between the cutting object and the assembly groove after being inflated.
3. The foam aluminum fixed-length cutting device according to claim 2 is characterized in that: A limit unit for fixed-length measurement is installed inside the test cavity (21), and an air pressure sensor (11) is installed on the inner wall of the test cavity (21). After the fixed-length cutting, the air pressure sensor (11) works, and the first air source injects high-pressure gas into the test cavity (21), and the air pressure sensor (11) does not interfere with the entry and exit of the cutting unit.
4. The foam aluminum fixed-length cutting device according to claim 2 is characterized in that: A clamping airbag (14) is fixedly installed in the isolation space, and the second gas source can inject gas into the interior of the clamping airbag (14), so that the clamping airbag (14) is inflated.
5. The foam aluminum fixed-length cutting device according to claim 3 is characterized in that: The limit unit comprises a bearing seat (28) mounted on the inner wall of the test cavity (21); a stop bar (19) is rotatably mounted on the outer wall of the bearing seat (28) via a pin; a torsion spring (20) is fixedly mounted between the stop bar (19) and the bearing seat (28); a pressure sensor is mounted on the outer wall of the stop bar (19) facing the isolation space; and a calibration laser is mounted on the test cavity (21) to check whether the stop bar (19) remains vertical.
6. The foam aluminum fixed-length cutting device according to claim 5, characterized in that: The outer wall of the positioning base (2) is provided with a discharge channel (9) connected to the test chamber (21), and the cutting object can break through the limit of the stop bar (19) and pass through the discharge channel (9) for discharge. The top of the positioning base (2) is provided with a valve groove (8) connected to the discharge channel (9), and a valve plate (5) is controllably slidably installed in the valve groove (8). When the valve plate (5) moves downward to a preset position, the discharge channel (9) can be closed. The valve plate (5) is provided with an air intake channel (7), and the two ends of the air intake channel (7) are respectively associated with the first air source and the test chamber (21).
7. The foam aluminum fixed-length cutting device according to claim 5, characterized in that: The calibration laser comprises a photosensitive element (18) installed inside a baffle (19); a cylindrical groove (17) is provided on the outer wall of the baffle (19); light inside the cylindrical groove (17) can be received by the photosensitive element (18); a laser emitter (16) is installed on the inner wall of the test cavity (21); when the baffle (19) is in a vertical state, the central axis of the cylindrical groove (17) is colinear with a laser path of the laser emitter (16); laser light emitted by the laser emitter (16) can enter the cylindrical groove (17) and be received by the photosensitive element (18); and when the baffle (19) is in an inclined state, the cylindrical groove (17) restricts the entry of laser light.
8. The foam aluminum fixed-length cutting device according to claim 2, characterized in that: A square corrugated pipe (4) is fixedly mounted on the outer wall of the positioning base (2); an independent base (1) is fixedly mounted on one end of the square corrugated pipe (4) away from the positioning base (2); the independent base (1) is slidably mounted on an operating stand (25); a cutting hole is designed on the independent base (1); the output end of the cutting unit can enter the cutting hole; the interiors of the independent base (1) and the square corrugated pipe (4) are both connected to the exposure cavity (23); an injection groove (13) is provided on the top of the independent base (1); and a cutting liquid pump connected to the injection groove (13) is installed on the operating stand (25).
9. The foam aluminum fixed-length cutting device according to any one of claims 1 to 8, characterized in that: A gantry (26) is numerically controlled and slidably mounted on the operating platform (25), and the cutting unit is assembled on the gantry (26).
10. The foam aluminum fixed-length cutting device according to claim 9, characterized in that: The cutting unit comprises a guide rail (27) mounted on a gantry (26), a frame being slidably mounted on the guide rail (27), a cutting gun (3) being mounted on the frame, a controller (12) for controlling the sliding of the frame and the cutting gun (3) being mounted on the gantry (26), and a plasma power supply being further mounted on the operating platform (25).