A multi-nozzle dry ice cleaning device and method

Abstract

The present invention relates to a multi-nozzle dry ice cleaning device and method, which includes a frame, a feeding device, a positioning device and a cleaning device. The feeding device includes a feeding belt for placing a filtering product to be deburred and a feeding drive mechanism. A hollow structure is provided through the feeding belt; the positioning device is used for clamping and fixing the filtering product moved to the cleaning station on the feeding belt; the cleaning device includes a dry ice machine and a first dry ice nozzle and a second dry ice nozzle connected to the dry ice machine. The first dry ice nozzle and the second dry ice nozzle are respectively arranged above and below the feeding belt and are arranged towards the cleaning station. The multi-nozzle dry ice cleaning device of the present invention can simultaneously remove burrs on the upper and lower surfaces of the filtering product, achieve the purpose of automatic deburring, improve the product processing efficiency, avoid the situation that the filtering product is easily damaged during manual deburring, and reduce the labor cost at the same time.

Description

Technical Field

[0001] The present invention belongs to the technical field of deburring equipment, and in particular relates to a multi-nozzle dry ice cleaning equipment and method. Background Art

[0002] At present, with the construction and development of global mobile broadband networks, the development of the radio frequency module industry has become faster; in the manufacturing process of radio frequency modules, for filter products with high requirements for insertion loss and intermodulation, there are problems such as high production process difficulty and high cost. During the machining process of metal filters, a large amount of machining burrs will be generated. The existence of burrs has a harmful impact on the electrical performance indicators of filters such as insertion loss and intermodulation. These burrs are generally relatively small. Currently, the industry usually removes burrs manually using metal scrapers or brushes, which has the following disadvantages:

[0003] 1. Manual deburring may have missed areas, resulting in incomplete burr removal and there are human uncertain factors.

[0004] 2. When manually using a metal scraper to remove burrs, during the process of scraping off the burr capes, it is very easy to scratch the crimping surface on the filter product cavity due to improper operation.

[0005] 3. During the process of manually using a brush to remove burrs, when the brush is used for too long, it will affect the burr removal effect of the brush, and the brush will also scratch the crimping surface of the filter product cavity to a certain extent, affecting the intermodulation performance. Summary of the Invention

[0006] The purpose of the present invention is to solve at least to some extent the deficiencies in the prior art, and provide a multi-nozzle dry ice cleaning equipment and method.

[0007] To achieve the above object, the present invention provides a multi-nozzle dry ice cleaning equipment, including:

[0008] A frame;

[0009] A feeding device, the feeding device is arranged on the frame, and includes a feeding belt for placing filter products to be deburred and a feeding driving mechanism. The feeding driving mechanism is connected to the feeding belt to drive the feeding belt to move so as to drive the filter products to move. The feeding belt is provided with a hollow structure penetrating therethrough, and the hollow structure extends along the moving direction of the feeding belt;

[0010] A positioning device, the positioning device is arranged on the frame, and is used for clamping and fixing the filter products moved to the cleaning station on the feeding belt;

[0011] Cleaning device, the cleaning device includes a dry ice machine and a first dry ice nozzle and a second dry ice nozzle connected to the dry ice machine, the first dry ice nozzle and the second dry ice nozzle are respectively arranged above and below the feeding belt, and are arranged towards the cleaning station direction.

[0012] Preferably, the positioning device includes a pressure plate and a pressure driving mechanism, the pressure plate includes a pressure part and a connecting part, one end of the connecting part is connected to the pressure part, the pressure driving mechanism is fixedly arranged on the frame and connected to the other end of the connecting part, and is used to drive the pressure plate to move so that the pressure part presses and fixes the filtering product on the feeding belt.

[0013] Preferably, a positioning sensor for sensing whether the filtering product moves to the cleaning station is further arranged on the pressure plate.

[0014] Preferably, the cleaning device further includes a first multi-axis workbench and a second multi-axis workbench, the first multi-axis workbench and the second multi-axis workbench are respectively located above and below the feeding belt, the first dry ice nozzle is arranged on the first multi-axis workbench, and the second dry ice nozzle is arranged on the second multi-axis workbench.

[0015] Preferably, the cleaning device further includes a hot air blower, a first hot air nozzle and a second hot air nozzle, the first hot air nozzle is arranged on the first multi-axis workbench, the second hot air nozzle is arranged on the second multi-axis workbench, and both the first hot air nozzle and the second hot air nozzle are arranged towards the cleaning station direction.

[0016] Preferably, a desiccant is arranged between the hot air blower, the first hot air nozzle and the second hot air nozzle.

[0017] Preferably, the multi-nozzle dry ice cleaning equipment further includes a sound insulation protective cover covering the frame.

[0018] Preferably, a dust suction port is further arranged in the sound insulation protective cover, the dust suction port is located below the cleaning station and is communicated with a suction device.

[0019] The present invention also provides a multi-nozzle dry ice cleaning method, which is applied to the multi-nozzle dry ice cleaning equipment as described above, and includes the following steps:

[0020] After detecting that the filtering product moves to the cleaning station, control the feeding driving mechanism to stop driving the feeding belt;

[0021] Control the positioning device to clamp and fix the filtering product located at the cleaning station;

[0022] Control the start of the dry ice machine so that the first dry ice nozzle and the second dry ice nozzle respectively spray dry ice particles onto the filtering product located at the cleaning station.

[0023] Preferably, the method further includes the steps of:

[0024] Stop the dry ice machine and control the start of the hot air blower so that the first hot air nozzle and the second hot air nozzle respectively spray hot air streams onto the filtering product located at the cleaning station.

[0025] The multi-nozzle dry ice cleaning equipment of the present invention can remove burrs on both the upper and lower surfaces of the filtering product simultaneously by providing a hollow structure on the conveyor belt and arranging dry ice nozzles respectively above and below the conveyor belt, thus achieving the purpose of automatic deburring, accelerating the product processing efficiency, avoiding the situation of easily damaging the filtering product during manual deburring, and reducing the labor cost at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the multi-nozzle dry ice cleaning equipment according to an embodiment of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the positioning device of the present invention;

[0029] Figure 3 It is a flowchart of the multi-nozzle dry ice cleaning method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following details the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0033] Please refer to Figure 1-2 , an embodiment of the present invention provides a multi-nozzle dry ice cleaning device, including a frame and a feeding device 10, a positioning device 20, and a cleaning device 30 provided on the frame.

[0034] The feeding device 10 includes a feeding belt 11 for placing the filtering product to be deburred and a feeding driving mechanism. The feeding driving mechanism is connected to the feeding belt 11 to drive the feeding belt 11 to move so as to drive the filtering product to move. In this embodiment, the feeding driving mechanism can adopt a motor cooperating with a reducer to drive the feeding belt 11 to move; a hollow structure 12 is formed through the feeding belt 11, and the hollow structure 12 extends along the moving direction of the feeding belt 11; the positioning device 20 is used for clamping and fixing the filtering product moving to the cleaning station on the feeding belt 11; the cleaning device 30 includes a dry ice machine 31 and a first dry ice nozzle 311 and a second dry ice nozzle 312 connected to the dry ice machine 31. The first dry ice nozzle 311 and the second dry ice nozzle 312 are respectively arranged above and below the feeding belt 11 and are arranged towards the cleaning station.

[0035] The working principle of deburring for the multi-nozzle dry ice cleaning equipment in this embodiment is as follows: Place the filter product to be deburred on the feeding belt 11. Move the filter product to the cleaning station through the feeding belt 11. After being clamped and fixed by the positioning device 20, use the dry ice machine 31 to spray dry ice particles onto the upper and lower surfaces of the filter product respectively through the first dry ice nozzle 311 and the second dry ice nozzle 312. After the dry ice particles contact the filter product, they sublimate from solid state to gaseous state, absorbing a large amount of heat, resulting in a significant reduction in the surface temperature of the filter product, making the burrs on the surface of the filter product become more brittle. Subsequently, the dry ice particles can impact and break the burrs on the filter product, thus achieving the purpose of deburring; when the deburring of the filter product on the cleaning station is completed, the positioning device 20 releases the fixation on the filter product, and the feeding drive mechanism continues to drive the feeding belt 11 to move, so as to take out the filter product with burrs removed, completing the entire process of automatic deburring.

[0036] According to the multi-nozzle dry ice cleaning equipment in this embodiment, by opening a hollow structure 12 on the feeding belt 11 and respectively arranging dry ice nozzles above and below the feeding belt 11, the upper and lower surfaces of the filter product can be simultaneously deburred, achieving the purpose of automatic deburring, accelerating the product processing efficiency, avoiding the situation that the filter product is easily damaged during manual deburring, and reducing the labor cost at the same time.

[0037] In one embodiment, as shown in Figure 2 the positioning device 20 includes a pressing plate 21 and a pressing drive mechanism 22. The pressing plate 21 includes a pressing part 211 and a connecting part 212. One end of the connecting part 212 is connected to the pressing part 211, and the pressing drive mechanism 22 is fixedly arranged on the frame and connected to the other end of the connecting part 212, and is used to drive the pressing plate 21 to move so that the pressing part 211 presses and fixes the filter product on the feeding belt 11.

[0038] The pressing drive mechanism 22 in this embodiment can adopt a hydraulic cylinder to drive the pressing plate 21 to move up and down. When the filter product moves to the cleaning station, the hydraulic cylinder drives the pressing plate 21 to move downward, so that the pressing part 211 approaches the feeding belt 11 to press and fix the filter product on the feeding belt 11; after the filter product completes the deburring work, the hydraulic cylinder drives the pressing plate 21 to move upward, so that the pressing part 211 moves away from the feeding belt 11 to release the fixation on the filter product. At this time, the feeding drive mechanism can drive the feeding belt 11 to move to take out the filter product with deburring completed, and at the same time move a new filter product to be deburred to the cleaning station, and so on in a cycle to achieve automatic deburring of the filter product.

[0039] Further, a positioning sensor for sensing whether the filter product has moved to the cleaning station is also provided on the pressure plate 21. After the positioning sensor senses that the filter product has moved to the cleaning station, it sends an induction signal to the control system of the multi-nozzle dry ice cleaning device. The control system controls the feeding drive mechanism to stop according to this induction signal, and at the same time controls the pressure drive mechanism 22 to start to drive the pressure plate 21 to press and fix the filter product on the cleaning station; it should be noted that the positioning sensor can adopt an infrared sensor, a laser sensor, a vision sensor, a ranging sensor, etc., and there is no special limitation here; in addition, the positioning sensor is not limited to being arranged on the pressure plate 21. For example, it can also be arranged on the frame, as long as it can detect that the filter product has moved to the cleaning station to facilitate the clamping and fixing of the positioning device 20.

[0040] In one embodiment, the cleaning device 30 further includes a first multi-axis workbench 33 and a second multi-axis workbench 34. The first multi-axis workbench 33 and the second multi-axis workbench 34 are respectively located above and below the feeding belt 11. The first dry ice nozzle 311 is arranged on the first multi-axis workbench 33, and the second dry ice nozzle 312 is arranged on the second multi-axis workbench 34.

[0041] The multi-axis workbench is used to control the translation and rotation of the dry ice nozzle, so as to accurately position the burr parts of the filter product. Exemplarily, the multi-axis workbench adopts a four-axis drive workbench, including the X-axis, Y-axis, and Z-axis that form a coordinate system, and the rotation axis R-axis, a total of four motion axes. Among them, the X-axis is responsible for moving in the left-right direction, the Y-axis is responsible for moving in the front-back direction, the Z-axis is responsible for moving up and down, and the R-axis can perform rotational motion. The four-axis drive workbench is used to realize the movement of the dry ice nozzle in four degrees of freedom, and accurately position the burr parts of the filter product; in the actual application process, according to the burr parts of the filter product, a trajectory is planned, and the multi-axis workbench drives the dry ice nozzle to move along the planned trajectory to avoid missing areas of the burrs on the product and ensure that the burrs on the product are removed cleanly.

[0042] Further, in this embodiment, the cleaning device 30 further includes a hot air blower 32, a first hot air nozzle 321 and a second hot air nozzle 322. The first hot air nozzle 321 is arranged on the first multi-axis workbench 33, and the second hot air nozzle 322 is arranged on the second multi-axis workbench 34, and both the first hot air nozzle 321 and the second hot air nozzle 322 are arranged in the direction of the cleaning station.

[0043] When deburring, during the process of impacting and breaking the burrs of the filtering product with dry ice particles, impurity debris will be generated. To prevent these burr debris from adhering to the crimping surface of the cavity of the filtering product and thus affecting the product performance, after removing the burrs with dry ice particles, a hot air blower 32 uses the first hot air nozzle 321 and the second hot air nozzle 322 to spray hot air flows onto the upper and lower surfaces of the filtering product respectively. While blowing the burr debris clean, the temperature of the filtering product is increased to avoid the formation of condensed water on the filtering product in a low-temperature state due to deburring with dry ice particles. In this way, the product can immediately enter the assembly process, eliminating the drying process.

[0044] Preferably, to prevent the hot air flow sprayed by the hot air nozzle from directly forming condensed water on the surface of the low-temperature filtering product, in this embodiment, a desiccant is provided between the hot air blower 32, the first hot air nozzle 321, and the second hot air nozzle 322. The desiccant is used to dehumidify the hot air flow generated by the hot air blower 32 to ensure the dryness of the hot air flows sprayed by the two hot air nozzles, so as to avoid the generation of condensed water when the hot air flow heats up the filtering product.

[0045] In one embodiment, the multi-nozzle dry ice cleaning device further includes a sound insulation protective cover 40 that wraps the machine frame; this reduces the damage of noise to the operator and at the same time prevents the burr debris generated during deburring from spreading outside the sound insulation protective cover 40 and polluting the environment. Preferably, a dust suction port 51 is further provided inside the sound insulation protective cover 40. The dust suction port 51 is located below the cleaning station and is connected to a suction device 50. When the dry ice machine 31 is turned on for deburring, the suction device 50 is also turned on simultaneously, so that the burr debris inside the sound insulation protective cover 40 can be collected through the dust suction port 51 to prevent the burr debris from floating onto the filtering product.

[0046] The present invention also provides a multi-nozzle dry ice cleaning method, which is applied to the multi-nozzle dry ice cleaning device as described above and includes the following steps:

[0047] S1. When it is detected that the filtering product has moved to the cleaning station, control the feeding drive mechanism to stop driving the conveyor belt 11.

[0048] S2. Control the positioning device 20 to clamp and fix the filtering product located at the cleaning station.

[0049] S3. Control the dry ice machine 31 to start, so that the first dry ice nozzle 311 and the second dry ice nozzle 312 spray dry ice particles onto the filtering product located at the cleaning station respectively.

[0050] S4. Stop the dry ice machine 31 and control the hot air blower 32 to start, so that the first hot air nozzle 321 and the second hot air nozzle 322 spray hot air flows onto the filtering product located at the cleaning station respectively.

[0051] The multi-nozzle dry ice cleaning method of the present invention can automatically perform the work of deburring on both the upper and lower surfaces of the filter product, and after deburring, the hot air nozzle is used to heat up the low-temperature filter product to eliminate the condensed water generated during the product processing, and ensure that no more condensed water is generated after blanking, so that the product can immediately enter the assembly link, saving the drying link and improving the production efficiency.

[0052] It should be noted that while steps S3 and S4 are being executed, the suction device 50 is also turned on synchronously, so that the burr debris in the sound insulation protective cover 40 can be collected through the dust suction port 51, preventing the burr debris from spreading onto the filter product.

[0053] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] The above is the description of the technical solution provided by the present invention. For those skilled in the art, based on the idea of the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A multi-nozzle dry ice cleaning device, characterized in that, Comprising: Frame; Feeding device, the feeding device is arranged on the frame, including a feeding belt for placing the filtering product to be deburred and a feeding driving mechanism, the feeding driving mechanism is connected to the feeding belt, and is used to drive the feeding belt to move so as to drive the filtering product to move, and a hollow structure is penetrated through the feeding belt, and the hollow structure extends along the moving direction of the feeding belt; Positioning device, the positioning device includes a pressing plate and a pressing driving mechanism, the pressing plate includes a pressing part and a connecting part, one end of the connecting part is connected to the pressing part, the pressing driving mechanism is fixedly arranged on the frame and connected to the other end of the connecting part, and is used to drive the pressing plate to move so that the pressing part presses and fixes the filtering product moving to the cleaning station on the feeding belt; Cleaning device, the cleaning device includes a first multi-axis workbench, a second multi-axis workbench, a dry ice machine, and a first dry ice nozzle and a second dry ice nozzle connected to the dry ice machine, the first dry ice nozzle and the second dry ice nozzle are respectively arranged above and below the feeding belt, and are arranged towards the cleaning station; the dry ice machine is used to spray dry ice particles to the upper and lower surfaces of the filtering product respectively through the first dry ice nozzle and the second dry ice nozzle; the first multi-axis workbench and the second multi-axis workbench are respectively located above and below the feeding belt, the first dry ice nozzle is arranged on the first multi-axis workbench, and the second dry ice nozzle is arranged on the second multi-axis workbench; the first multi-axis workbench and the second multi-axis workbench are used to perform trajectory planning according to the burr positions of the filtering product, and drive the first dry ice nozzle and the second dry ice nozzle to move along the planned trajectory.

2. The multi-nozzle dry ice cleaning device according to claim 1, wherein, A positioning sensor for sensing whether the filtering product moves to the cleaning station is further arranged on the pressing plate.

3. The multi-nozzle dry ice cleaning device according to claim 1, characterized in that, The cleaning device further includes a hot air blower, a first hot air nozzle and a second hot air nozzle, the first hot air nozzle is arranged on the first multi-axis workbench, the second hot air nozzle is arranged on the second multi-axis workbench, and both the first hot air nozzle and the second hot air nozzle are arranged towards the cleaning station.

4. The multi-nozzle dry ice cleaning device according to claim 3, characterized in that, A desiccant is arranged between the hot air blower, the first hot air nozzle and the second hot air nozzle.

5. The multi-nozzle dry ice cleaning device according to claim 1, wherein, The multi-nozzle dry ice cleaning equipment further includes a sound insulation protective cover covering the frame.

6. The multi-nozzle dry ice cleaning device according to claim 5, characterized in that, A dust suction port is further arranged in the sound insulation protective cover, the dust suction port is located below the cleaning station and is communicated with a suction device.

7. A multi-nozzle dry ice cleaning method, characterized in that, Applied to the multi-nozzle dry ice cleaning equipment as described in any one of claims 1 to 6, including the following steps: When it is detected that the filtering product moves to the cleaning station, control the feeding driving mechanism to stop driving the feeding belt; Control the positioning device to clamp and fix the filtering product located at the cleaning station; Control the dry ice machine to start, so that the first dry ice nozzle and the second dry ice nozzle spray dry ice particles to the filtering product located at the cleaning station respectively.

8. The multi-nozzle dry ice cleaning method according to claim 7, characterized in that, It further includes the step: Stop the dry ice machine and control the hot air blower to start, so that the first hot air nozzle and the second hot air nozzle respectively spray hot air flows to the filter product located at the cleaning station.

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