Sander
By installing adjustment devices and sensors in the sander, the passage area of the dust collection chamber can be automatically adjusted, solving the problem that the dust collection box cannot be adjusted in the existing technology, thereby improving the dust collection effect and user operation convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU DONGCHENG ELECTROMECHANICAL TECHNOLOGY CO LTD
- Filing Date
- 2023-12-11
- Publication Date
- 2026-07-31
AI Technical Summary
The dust collection box of existing sanders cannot automatically adjust the passage area, resulting in low intelligence, inconvenience for users and poor dust collection effect.
An adjustment device is installed in the dust collection box. The controller drives the baffle to move to automatically adjust the passage area of the dust collection chamber. Combined with the detection of the working surface material and load by sensors, the dust collection chamber can be automatically classified and adjusted.
It enables automatic classification and adjustment of the dust collection chamber, improving user operation convenience and dust collection efficiency, ensuring classified collection of grinding waste, and reducing cleaning difficulty.
Smart Images
Figure CN117773725B_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to the field of sanding machine technology, and in particular to a sanding machine that automatically adjusts the passage area of the dust collection chamber. [Background Technology]
[0002] Sanders are commonly used for daily sanding of wooden furniture and polishing of steel. They utilize a dust extraction fan inside the casing to draw the debris generated during sanding through the dust exhaust pipe on the bottom plate of the sander. The debris or dust is then discharged into the dust collection assembly through the air duct to collect the generated debris or dust, thus preventing environmental pollution and human inhalation.
[0003] In the prior art, sanders can be referenced in Chinese Invention Patent No. CN112894564A, published on June 4, 2021, which discloses a sander in which the dust collection component includes a dust collection box and a mounting mechanism connected to the dust collection box. The dust collection box is connected to the mounting mechanism, and dust absorbed inside the housing enters the dust collection box by connecting the mounting mechanism to a dust discharge pipe on the housing. However, the dust collection box of the above-mentioned dust collection component cannot automatically adjust its passage area, has a low level of intelligence, poor user operation convenience and comfort, and poor dust collection effect.
[0004] Therefore, it is indeed necessary to provide an improved sander to overcome the shortcomings of the existing technology. [Summary of the Invention]
[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a sander with an adjustable dust collection chamber passage area and high intelligence.
[0006] The present invention addresses the problems of existing technologies by adopting the following technical solution: A sander equipped with a dust collection box. The sander includes a housing, a drive assembly installed within the housing, and a base plate assembly driven by the drive assembly. The housing includes a main housing accommodating the drive assembly, an intermediate cover connected to the main housing, and a controller for controlling the drive assembly. The intermediate cover is located between the main housing and the base plate assembly, and the dust collection box is installed on the intermediate cover. The dust collection box includes a connecting portion connected to the intermediate cover, a dust collection chamber installed in the connecting portion, and an adjustment device located between the connecting portion and the dust collection chamber. The dust collection chamber has at least one dust collection cavity. The controller drives the adjustment device to move, thereby adjusting the passage area of the dust collection cavity.
[0007] A further improvement is as follows: the adjustment device includes a switching component installed on the connecting part and a baffle connected to the switching component. The switching component has a recessed part from its end face and an electromagnetic coil embedded in the recessed part. The baffle has a mounting part recessed from its end face and a magnetic component installed on the mounting part. The electromagnetic coil is energized to drive the magnetic component to move.
[0008] A further improvement is that the adjusting device further includes a rolling element disposed between the switching element and the baffle, the rolling element guiding the baffle to rotate freely within the switching element.
[0009] A further improvement is as follows: the adjustment device also has a first sensor installed on the outer periphery of the switching element, the controller generates compensation parameters based on the positional deviation of the baffle detected by the first sensor, and controls the electromagnetic coil to be energized based on the compensation parameters to attract the magnetic element.
[0010] A further improvement is as follows: the sander also includes a detection device installed on the intermediate cover, the detection device being connected to the controller, and the detection device detecting the material of the working surface.
[0011] A further improvement is as follows: the detection device includes a second sensor, which detects the material of the working surface and generates an electrical signal, and the controller controls the baffle to adjust the passage area of the dust collection chamber based on the electrical signal.
[0012] A further improvement is as follows: the intermediate cover has a protruding engaging member, and the detection device includes a mounting plate installed on the intermediate cover and a groove recessed from the inner edge of the mounting plate, the groove engaging with the engaging member.
[0013] A further improvement is as follows: the switching element has a first groove recessed from the inner periphery, the baffle has a second groove recessed from the outer periphery, one end of the rolling element is engaged with the first groove, and the other end is engaged with the second groove.
[0014] A further improvement is as follows: the adjustment device further includes a support portion connected to the switching component and a pin shaft installed on the support portion, the baffle further includes a positioning hole recessed from the center, and the pin shaft is engaged with the positioning hole.
[0015] A further improvement is as follows: the connecting part has a recessed locking member from the side wall, the supporting part has a protruding member from the side wall, and the locking member is engaged with the protruding member.
[0016] A further improvement is as follows: the baffle is semi-circular, and the connecting part also has a connecting port for installation on the intermediate cover, wherein the diameter of the baffle is larger than the diameter of the connecting port.
[0017] Compared with the prior art, the present invention has the following beneficial effects: By installing an adjustment device between the connecting part of the dust collection box and the dust collection chamber, the adjustment device is connected to the controller, and the controller drives the adjustment device to move to automatically adjust the passage area of the dust collection chamber. The structure is simple. Furthermore, the dust collection chamber has two dust collection chambers, which can automatically classify and process grinding waste, facilitating subsequent cleaning by the user. Specifically, the second sensor detects the material of the working surface and generates an electrical signal. The controller controls the movement of the baffle based on the electrical signal. Here, the baffle works by energizing the electromagnetic coil to generate a repulsive force generated by the magnetic field that repels the magnetic component, thereby realizing the automatic switching of the baffle to the dust collection chamber. Furthermore, a first sensor is installed at a certain position of the baffle's stroke. The controller detects the positional deviation of the baffle based on the first sensor and generates compensation parameters. Based on the compensation parameters, the controller controls the electromagnetic coil to be energized to attract the magnetic component, completing the remaining stroke of the baffle's switching cycle and simultaneously completing adsorption. This avoids the difficulty of completely passing through the entire switching stroke due to repulsive force, and finally completes the adjustment of the passage area of the dust collection chamber by the baffle, achieving the effect of automatic classification and dust collection. [Image Description]
[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:
[0019] Figure 1 This is a schematic diagram of the sanding machine of the present invention;
[0020] Figure 2 yes Figure 1 A cross-sectional schematic diagram of the sander shown;
[0021] Figure 3 yes Figure 1 An exploded view of the dust collection box of the sander shown.
[0022] Figure 4 yes Figure 3 A partial exploded view of the dust collection box of the sander shown;
[0023] Figure 5 yes Figure 1 An exploded view of a portion of the sander's structure;
[0024] Figure 6 yes Figure 5 A schematic diagram of the structure of the middle cover and testing device of the sander shown;
[0025] Figure 7 yes Figure 1 The diagram shows the state changes of the baffle of the sander. At this time, the first dust collection chamber is in the closed state.
[0026] Figure 8 yes Figure 7The diagram shows the state changes of the baffle of the sander. At this time, the first dust collection chamber is in the open state. [Detailed Implementation]
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0028] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear" that indicate orientation or positional relationship are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device / 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 the invention.
[0029] Please see Figures 1 to 4 As shown, the embodiment of the present invention relates to a sander 100, which is equipped with a dust collection box 200. The sander 100 includes a housing 1, a drive assembly 2 installed in the housing 1, and a base plate assembly 3 driven by the drive assembly 2. The housing 1 includes a main housing 11 that houses the drive assembly 2, an intermediate cover 12 connected to the main housing 11, and a controller 13 that controls the drive assembly 2. The intermediate cover 12 is located between the main housing 11 and the base plate assembly 3. The dust collection box 200 is installed on the intermediate cover 12. The sander 100 performs sanding operations under the action of a power source. The fan 21 in the drive assembly 2 rotates in the main housing 11 to generate suction air pressure for dust collection, thereby sucking the generated debris, dust, etc. into the sander 100 through the suction port (not shown) opened on the base plate assembly 3, and then discharging them into the dust collection box 200 to avoid polluting the environment and harming human health.
[0030] In this embodiment, the dust collection box 200 includes a connecting portion 5 connected to the intermediate cover 12, a dust collection chamber 6 installed in the connecting portion 5, and an adjusting device 7 located between the connecting portion 5 and the dust collection chamber 6. It should be noted that the dust collection chamber 6 has a first dust collection cavity 61 and a second dust collection cavity 62 that are independently arranged. The adjusting device 7 adjusts the passage area of the dust collection chamber 6. Furthermore, the controller 13 drives the adjusting device to move, thereby adjusting the passage area of at least one of the first dust collection cavity 61 and the second dust collection cavity 62. It should be noted that the adjusting device 7 has a random initial position, a first position where the first dust collection cavity 61 is open and the second dust collection cavity 62 is closed (e.g., ...). Figure 7 As shown in Figure A) and the third position where the first dust collection chamber 61 is closed and the second dust collection chamber 62 is open (as shown in Figure A) Figure 8 (as shown in D); In addition, the first dust collection chamber 61 and the second dust collection chamber 62 can be used to store grinding waste of different materials such as wood chips and iron chips produced by the sander 100, which makes it convenient for users to clean and discharge the dust collection box 200.
[0031] Specifically, the adjusting device 7 includes a switching element 71 installed on the connecting part 5, a baffle 72 connected to the switching element 71, and a rolling element 73 disposed between the switching element 71 and the baffle 72. The rolling element 73 guides the baffle 72 to rotate freely within the switching element 71. This simple structure fulfills the user's need for classified dust collection of waste generated by the sander 100. It should be noted that the baffle 72 is semi-circular, and the connecting part 5 also has a connection port 52 installed on the intermediate cover 12. The diameter of the baffle 72 is larger than the diameter of the connection port 52, which prevents leakage during grinding waste collection, thus avoiding the waste from being misclassified into specific dust collection chambers and failing to achieve the user's desired classified dust collection effect.
[0032] The connecting part 5 has a recessed locking member 51, and the supporting part 75 has a protruding member 751 extending from the side wall. The locking member 51 is engaged with the protruding member 751. With the above arrangement, the adjusting device 7 can be firmly installed on the connecting part 5. The ingenious structure avoids the risk of incomplete classification due to shaking caused by loose installation. It also facilitates the quick installation / removal of the adjusting device 7, making it easier for later maintenance and improving the user's ease of operation and comfort.
[0033] The adjusting device 7 also includes a support 75 connected to the switching member 71 and a pin 76 mounted on the support 75. The baffle 72 also includes a centrally recessed positioning hole 721, and the pin 76 is engaged with the positioning hole 721. It should be noted that one end of the pin 76 is engaged with the positioning hole 721, and the other end is movably connected to the support 75 to prevent the baffle 72 from rotating on its own axis, so as to realize the revolution of the baffle 72. That is to say, the baffle 72 can rotate freely within the switching member 71 under the guidance of the rolling element 73, thereby adjusting the passage area of the dust collection chamber 6 and completing the classified dust collection of the sander 100.
[0034] Furthermore, the switching member 71 has a recessed portion 712 on its end face and an electromagnetic coil 713 embedded in the recessed portion 712. The baffle 72 has a recessed mounting portion 722 on its end face and a magnetic element 723 mounted on the mounting portion 722. The electromagnetic coil 713 is connected to the controller 13, and the electromagnetic coil 713 is energized to drive the magnetic element 723 to move. It should be noted that the magnetic element is preferably a magnet, but is not limited to a magnet. For details, please refer to [link to relevant documentation]. Figure 8As shown in Figure 9, two N / S class magnets with identical magnetic properties are installed at the mounting part 722. An electromagnetic coil 713 is energized to generate an N / S class magnetic field. The repulsive force between the two magnets drives the rotation of the rolling element 73, enabling the baffle 72 to automatically switch between the first and second dust collection chambers 61 and 62. This achieves automatic dust collection and sorting in the sander, improving operator convenience. Furthermore, the switching element 71 has a first groove 711 recessed from its inner periphery, and the baffle 72 has a second groove 721 recessed from its outer periphery. One end of the rolling element 73 is engaged with the first groove 711, and the other end with the second groove 721. This arrangement allows the rolling element 73 to more smoothly guide the baffle 72 to rotate on the switching element 71, completing the automatic switching of the dust collection chambers, reducing the time error of chamber switching, further shortening the switching time of the adjusting device 7, and improving dust collection efficiency.
[0035] Please refer to the following: Figure 3 and Figure 4 As shown, the adjustment device 7 also has a first sensor 74 installed on the outer periphery of the switching member 71. The controller 13 generates compensation parameters based on the positional deviation of the baffle 72 detected by the first sensor 74, and controls the electromagnetic coil 712 to be energized to attract the magnetic component 722 based on the compensation parameters. With the first sensor 74 set as described above, the risk of dust collection failure due to repulsive force not being able to complete the entire switching process can be avoided. By compensating for the remaining work of the baffle 72 in the switching member 71, the entire switching process is completed, and the baffle 72 is adsorbed onto the switching member 71, thereby completing the adjustment of the passage area of the first dust collection chamber 61 / second dust collection chamber 62.
[0036] In this invention, the baffle 72 has a first stroke controlled by the second sensor 41 and a second stroke controlled by the first sensor 74, and the sum of the first stroke and the second stroke is one switching cycle of the baffle 72. It should be noted that in the first stroke, the second sensor 41 detects the material of the working surface 10 and generates an electrical signal. The controller 13 controls the baffle 72 to work based on this electrical signal. Here, the baffle 72 works by energizing the electromagnetic coil 713 to generate a repulsive force that is mutually repulsive to the magnetic component 723. In the second stroke, the first sensor 74 is installed at a certain position of the baffle 72's stroke. The controller 13 detects the positional deviation of the baffle 72 based on the first sensor 74 and generates compensation parameters. Based on the compensation parameters, the controller controls the electromagnetic coil 713 to be energized to attract the magnetic component 723. Here, the baffle 72 works by energizing the electromagnetic coil 713 to generate an attractive force that is mutually attractive to the magnetic component 723. This completes the remaining stroke of the baffle 72's switching cycle and simultaneously completes the adsorption. This avoids the difficulty of completely passing through the entire switching stroke due to repulsive force. Finally, the baffle 72 adjusts the passage area of the first dust collection chamber 61 / second dust collection chamber 62, achieving the effect of automatic dust classification and collection. It should be explained that "a certain position" refers to the preferred installation of the first sensor 74 at 1 / 4 of the baffle switching cycle.
[0037] Please see Figure 2 , Figure 5 and Figure 6 As shown, the sander also includes a detection device 4 installed on the intermediate cover 12. The detection device 4 is connected to the controller 13 and detects the material of the working surface 10. In this embodiment, the detection device 4 includes a second sensor 41. It should be noted that if the first dust collection chamber 61 is used to collect wood-based waste and the second dust collection chamber 62 is used to collect metal-based waste, when the material of the working surface 10 is wood, the second sensor 41 can detect that the material of the working surface 10 is wood and generate an electrical signal. The controller 13 controls the baffle 72 to move and open the first dust collection chamber 61 based on the electrical signal. When the material of the working surface 10 is metal, the second sensor 41 can detect that the material of the working surface 10 is metal and generate an electrical signal. The controller 13 controls the baffle 72 to move and open the second dust collection chamber 61 based on the electrical signal, thereby achieving effective classification and dust collection of waste and facilitating the collection and discharge of waste.
[0038] In this embodiment, the intermediate cover 12 has a protruding engaging member 121, and the detection device 4 includes a mounting plate 42 installed on the intermediate cover 12 and a groove 43 recessed from the inner edge of the mounting plate 42. The groove 43 engages with the engaging member 121. With this configuration, the groove 43 can be slightly interference-fitted onto the engaging member 121, allowing the detection device 4 to be directly pressed onto the intermediate cover 12, facilitating future maintenance and replacement, and preventing the detection device 4 from falling off due to vibrations generated by the sander 100 during operation. Alternatively, the detection device 4 can be mounted on the sander 100 using a sliding structure, but is not limited to the structures mentioned above.
[0039] In another embodiment, the passage area of the dust collection chamber can be automatically adjusted according to the working status of the drive component 2. Specifically, the controller 13 monitors the load of the drive component 2. When the load of the drive component 2 is large, the controller 13 drives the baffle 72 to move to increase the passage area of the dust collection chamber; while when the load of the drive component 2 is small, the controller 13 drives the baffle 72 to move to decrease the passage area of the dust collection chamber.
[0040] Furthermore, when the load on the drive component 2 is large, the controller 13 drives the baffle 72 to move to open the first dust collection chamber 61 and the second dust collection chamber 62 simultaneously; while when the load on the drive component 2 is small, the controller 13 drives the baffle 72 to move to open one of the first dust collection chamber 61 and the second dust collection chamber 62, so that dust will only enter one dust collection chamber, making cleaning easier for the user.
[0041] This invention is not limited to the specific embodiments described above. Those skilled in the art will readily understand that many alternatives to the sander of this invention exist without departing from its principles and scope. The scope of protection of this invention is defined by the claims.
Claims
1. A sander equipped with a dust collection box, the sander comprising a housing, a drive assembly installed within the housing, and a base plate assembly driven by the drive assembly, the housing comprising a main housing housing the drive assembly, an intermediate cover connected to the main housing, and a controller for controlling the drive assembly, the intermediate cover being located between the main housing and the base plate assembly, and the dust collection box being installed on the intermediate cover; characterized in that: The dust collection box includes a connecting part attached to the intermediate cover, a dust collection chamber installed on the connecting part, and an adjustment device located between the connecting part and the dust collection chamber. The dust collection chamber has a first dust collection cavity and a second dust collection cavity. The sander also includes a detection device connected to the controller. The detection device detects the material of the working surface and generates an electrical signal. The controller drives the adjustment device to move based on the electrical signal, so as to adjust the passage state of the first dust collection cavity and the second dust collection cavity through the adjustment device.
2. The sander according to claim 1, characterized in that: The adjustment device includes a switching component installed on the connecting part and a baffle connected to the switching component. The switching component has a recessed portion from its end face and an electromagnetic coil embedded in the recessed portion. The baffle has a mounting portion from its end face and a magnetic component installed on the mounting portion. The electromagnetic coil is energized to drive the magnetic component to move.
3. The sander according to claim 2, characterized in that: The adjusting device further includes a rolling element disposed between the switching element and the baffle, the rolling element guiding the baffle to rotate freely within the switching element.
4. The sander according to claim 3, characterized in that: The adjustment device also has a first sensor installed on the outer periphery of the switching element. The controller generates compensation parameters based on the positional deviation of the baffle detected by the first sensor, and controls the electromagnetic coil to be energized based on the compensation parameters to attract the magnetic element.
5. The sander according to claim 2, characterized in that: The detection device is installed on the intermediate cover.
6. The sander according to claim 5, characterized in that: The detection device includes a second sensor, which detects the material of the working surface and generates an electrical signal. The controller controls the movement of the baffle based on the electrical signal to adjust the passage status of the first dust collection chamber and the second dust collection chamber.
7. The sander according to claim 5, characterized in that: The intermediate cover has a protruding engaging member, and the detection device includes a mounting plate installed on the intermediate cover and a groove recessed from the inner edge of the mounting plate, the groove engaging with the engaging member.
8. The sander according to claim 3, characterized in that: The switching element has a first groove recessed from its inner periphery, the baffle has a second groove recessed from its outer periphery, one end of the rolling element is engaged with the first groove, and the other end is engaged with the second groove.
9. The sander according to claim 2, characterized in that: The adjusting device further includes a support portion connected to the switching member and a pin mounted on the support portion. The baffle also includes a positioning hole recessed from the center, and the pin is engaged with the positioning hole.
10. The sander according to claim 9, characterized in that: The connecting part has a recessed locking member from the side wall, and the supporting part has a protruding member from the side wall, the locking member being engaged with the protruding member.
11. The sander according to claim 2, characterized in that: The baffle is semi-circular, and the connecting part also has a connecting port for installation on the intermediate cover. The diameter of the baffle is larger than the diameter of the connecting port.