Sand-blasting device

Abstract

The application discloses a sandblasting device. The sandblasting device comprises a positioning plate, a loading plate and a plurality of sandblasting needles. The positioning plate is provided with a positioning surface and a plurality of through holes, the positioning surface is configured to position a workpiece to be sandblasted, and the plurality of through holes correspond to a plurality of threaded holes on the workpiece respectively. The loading plate is arranged opposite to the positioning plate along the height direction of the sandblasting device, and is provided with an inner cavity, a gas hole and a plurality of openings, the gas hole and the plurality of openings are in communication with the inner cavity, and the gas hole is configured to allow external gas to enter the inner cavity. The plurality of sandblasting needles correspond to the plurality of through holes respectively and correspond to the plurality of openings respectively, one end of the sandblasting needle penetrates the through hole, the other end penetrates the opening and is installed in the opening, the sandblasting needle is provided with a through gas passage, the gas passage is in communication with the inner cavity and is configured to allow the gas in the inner cavity to flow out, and in the case that the workpiece is fixed on the positioning surface, the sandblasting needle is configured to be capable of extending into the corresponding threaded hole to perform sandblasting. The sandblasting device in the application can improve the cleaning efficiency and cleaning effect.

Description

Technical Field

[0001] This application relates to the field of machining technology, specifically to a sand blowing device. Background Technology

[0002] Sandblasting is a common surface treatment process for workpieces, primarily used for surface cleaning (such as rust removal and deburring) and surface roughening. However, for workpieces with threaded holes, residual sand tends to accumulate inside the threads after sandblasting. Currently, to clean residual sand from threaded holes, manual blowing with a handheld high-pressure air gun is typically used. However, handheld air guns cannot simultaneously blow sand from multiple threaded holes, resulting in low cleaning efficiency. Furthermore, the airflow from a handheld air gun cannot remove residual sand from the threaded mating surfaces, leading to poor cleaning and affecting the subsequent thread fit accuracy. Utility Model Content

[0003] In order to overcome the above-mentioned technical defects and at least solve the technical problems of low cleaning efficiency and poor cleaning effect, which affect the accuracy of subsequent thread mating, the embodiments of this application provide a sand blowing device.

[0004] The sandblasting device provided in this application includes a positioning plate, a loading plate, and a plurality of sandblasting needles. The positioning plate has a positioning surface and a plurality of through holes. The positioning surface is configured to position the workpiece to be sandblasted, and the plurality of through holes correspond to a plurality of threaded holes on the workpiece. The loading plate and the positioning plate are arranged opposite each other along the height direction of the sandblasting device. The loading plate has an inner cavity, air holes, and a plurality of openings. The air holes are located on the side of the loading plate away from the positioning plate, and the plurality of openings are located on the side of the loading plate facing the positioning plate. The plurality of openings correspond to the plurality of through holes, and both the air holes and the plurality of openings communicate with the inner cavity. The air holes are configured to allow external gas to enter the inner cavity. The plurality of sandblasting needles correspond to the plurality of through holes and the plurality of openings respectively. One end of the sandblasting needle passes through the through hole and the other end passes through and is installed in the opening. The sandblasting needle has a through air passage that communicates with the inner cavity and is configured to allow gas in the inner cavity to flow out. When the workpiece to be sandblasted is fixed on the positioning surface, the sandblasting needle is configured to extend into the corresponding threaded hole for sandblasting.

[0005] In some embodiments, the sandblasting device further includes an adjusting member connected to the positioning plate, the adjusting member being configured to adjust the distance between the positioning plate and the loading plate in the height direction.

[0006] In some embodiments, the sandblasting device further includes a support base disposed on the side of the loading plate opposite to the positioning plate, the support base being configured to support the loading plate, the adjusting member being connected to the support base and passing through the loading plate, the adjusting member being spaced apart from the inner cavity.

[0007] In some embodiments, the support base is provided with an installation space, and the sand blowing device further includes an air source, at least a portion of which is located within the installation space. The air source passes through the support base and communicates with the air hole, and is configured to introduce gas into the inner cavity through the air hole.

[0008] In some embodiments, the support base includes a support plate and two brackets, the support plate being configured to support the loading plate, the brackets being connected to the side of the support plate opposite to the loading plate, the two brackets being spaced apart from each other, and the installation space being formed by at least the support plate and the two brackets together.

[0009] In some embodiments, the adjusting member includes a support column and a bushing. One end of the support column is connected to the positioning plate, and the other end of the support column passes through the loading plate and is connected to the support base. The bushing is connected to the support column and is located between the positioning plate and the loading plate. Multiple bushings are included, and the multiple bushings have different dimensions in the height direction of the sandblasting device. The support column is configured to be interchangeably connected to any one of the multiple bushings to adjust the distance between the positioning plate and the loading plate.

[0010] In some embodiments, the sandblasting apparatus further includes a detection element disposed on the positioning plate and / or the loading plate, the detection element being configured to detect the workpiece to be sandblasted on the positioning surface.

[0011] In some embodiments, the blow needle is made of plastic.

[0012] In some embodiments, the sand-blowing needle includes a variety of needles with different flow areas in their air passages, and the opening is configured to replaceably mount any one of the various sand-blowing needles to adjust the sand-blowing pressure of the needle.

[0013] In some embodiments, the sandblasting needle includes a needle base and a needle tip. The needle base is inserted into the opening and has a first channel communicating with the inner cavity. The needle tip is connected to the needle base and has a second channel communicating with the first channel, forming the air passage together. When the workpiece to be sandblasted is fixed to the positioning surface, the needle tip is configured to extend into the threaded hole.

[0014] In the sandblasting device of this application embodiment, multiple sandblasting needles correspond to multiple through holes and multiple openings respectively, and the air passage of the sandblasting needles can allow gas in the inner cavity to flow out. When the workpiece to be sandblasted is fixed on the positioning surface, the sandblasting needles are configured to extend into the corresponding threaded hole for sandblasting. Thus, compared with the related technology of using a handheld high-pressure air gun to blow the threaded hole one by one, multiple sandblasting needles can blow sandblast multiple threaded holes at the same time, effectively improving cleaning efficiency. Furthermore, since the sandblasting needles can extend into the threaded hole for sandblasting, the airflow directly enters the depth of the threaded hole, resulting in less residual sand in the threaded hole after sandblasting, effectively improving the cleaning effect and ensuring the subsequent thread fit accuracy.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a sandblasting apparatus according to certain embodiments of this application; Figure 2 yes Figure 1 The diagram shows a three-dimensional exploded view of the sandblasting device. Figure 3 yes Figure 1 A three-dimensional structural diagram of the positioning plate in the sandblasting device shown; Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the sandblasting device. Figure 5 yes Figure 1 A three-dimensional structural diagram of the sand-blowing needle in the sand-blowing device shown.

[0017] The reference numerals in the detailed embodiments are as follows: 100 Sandblasting device; 10 Positioning plate, 101 Positioning surface, 103 Through hole; 20 Loading plate, 201 Inner cavity, 203 Air hole, 205 Opening, 21 Body, 23 Cover; 30 Sandblasting needle, 31 Needle seat, 33 Needle tip; 40 Adjusting component, 41 Support column, 43 Bushing; 50 Support base, 501 Installation space, 51 Support plate, 53 Bracket; 60 Air source; 70 Detection component. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0019] In the description of this application, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] Sandblasting is a common surface treatment process for workpieces, primarily used for surface cleaning (such as rust removal and deburring) and surface roughening. However, for workpieces with threaded holes, residual sand tends to accumulate inside the threads after sandblasting. Currently, cleaning this residual sand from threaded holes typically involves manually blowing it out with a handheld high-pressure air gun. However, handheld air guns cannot simultaneously clean multiple threaded holes, resulting in low cleaning efficiency. Furthermore, the airflow from a handheld air gun cannot remove residual sand from the threaded mating surfaces, leading to poor cleaning and affecting the subsequent thread fit accuracy. To resolve this issue, please refer to [link to relevant documentation]. Figure 1 This application provides a sand blowing device 100.

[0024] Please see Figures 1 to 3 The sandblasting device 100 provided in this application includes a positioning plate 10, a loading plate 20, and a plurality of sandblasting needles 30. The positioning plate 10 is provided with a positioning surface 101 and a plurality of through holes 103. The positioning surface 101 is configured to position the workpiece to be sandblasted, and the plurality of through holes 103 correspond to a plurality of threaded holes on the workpiece to be sandblasted. The loading plate 20 is arranged opposite to the positioning plate 10 along the height direction Z of the sandblasting device 100. The loading plate 20 is provided with an inner cavity 201, air holes 203, and a plurality of openings 205. The air holes 203 and the plurality of openings 205 are all connected to the inner cavity 201, and the air holes 203 are configured to allow external gas to enter the inner cavity 201. Multiple sandblasting needles 30 correspond to multiple through holes 103 and multiple openings 205 respectively. One end of the sandblasting needle 30 passes through the through hole 103, and the other end of the sandblasting needle 30 is installed in the opening 205. The sandblasting needle 30 is provided with a through air passage. The air passage of the sandblasting needle 30 is connected to the inner cavity 201 and is configured to allow the gas in the inner cavity 201 to flow out. When the workpiece to be sandblasted is fixed on the positioning surface 101, the sandblasting needle 30 is configured to be able to extend into the corresponding threaded hole for sandblasting.

[0025] The sandblasting device 100 is a structure used to clean residues (such as residual sand and dust after sandblasting) inside threaded holes. It efficiently cleans residual sand inside the threaded holes by directionally spraying high-pressure airflow into them, while avoiding damage to the thread structure. It can be understood that the sandblasting device 100 can clean not only the threaded holes of the workpiece but also other holes, such as locating holes (like pin holes), through holes, or process holes.

[0026] The positioning plate 10 is a structure in the sandblasting device 100 that can position the workpiece to be sandblasted (e.g., internal support positioning). The positioning plate 10 can be made of metallic and / or non-metallic materials. Metallic materials include, but are not limited to, aluminum, iron, steel, or aluminum alloys, while non-metallic materials include, but are not limited to, plastics. For example, the positioning plate 10 can be made of plastic. This reduces the weight of the positioning plate 10, thus achieving lightweight design; it also reduces the risk of scratches and damage to the workpiece caused by the positioning plate 10, thereby improving product quality.

[0027] The positioning surface 101 is a location on the positioning plate 10 used to position the workpiece to be sandblasted. The positioning surface 101 ensures the workpiece is in the correct position, facilitating subsequent processes. For example, when residual sand needs to be cleaned from the threaded holes of the workpiece, it can be manually or by a robotic arm or other mechanical device loaded onto the positioning surface 101 of the positioning plate 10, so that the subsequent sandblasting device 100 can perform sandblasting operations on the threaded holes of the workpiece. It should be noted that the workpiece to be sandblasted can be a semi-finished product or raw material in any step of the machining process, or a finished product. For example, the workpiece to be sandblasted can be a mobile phone frame.

[0028] The loading plate 20 is a structure in the sandblasting device 100 used to load devices such as the sandblasting needle 30. The loading plate 20 and the positioning plate 10 are arranged opposite each other along the height direction Z, that is, the loading plate 20 and the positioning plate 10 are stacked vertically, with at least a portion of the sandblasting needle 30 located between the loading plate 20 and the positioning plate 10. Specifically, the loading plate 20 can be made of metallic and / or non-metallic materials. Metallic materials include, but are not limited to, aluminum, iron, steel, or aluminum alloys, while non-metallic materials include, but are not limited to, plastics. In some embodiments, the loading plate 20 can be made of aluminum alloy, which increases the structural strength of the loading plate 20, reduces the possibility of damage to the loading plate 20, and improves the stability and reliability of the sandblasting device 100. In other embodiments, the loading plate 20 can be made of plastic, which makes the loading plate 20 lighter, thus facilitating the lightweight design of the sandblasting device 100.

[0029] Please combine Figure 4 In some embodiments of this application, the loading plate 20 is provided with an inner cavity 201, an air hole 203, and a plurality of openings 205. The air hole 203 and the plurality of openings 205 are all connected to the inner cavity 201. The air hole 203 is configured to allow external gas to enter the inner cavity 201. Specifically, when external gas (gas provided by gas source 60 as described below) flows into the inner cavity 201 through the air hole 203, the gas in the inner cavity 201 can be dispersed to the plurality of openings 205 and flow out to the outside of the loading plate 20 through the plurality of openings 205.

[0030] It should be noted that in some embodiments, the number of air holes 203 can be one or more. Having multiple air holes 203 serves two purposes: firstly, it increases the air intake volume of the inner cavity 201 per unit time, improving the response speed of the sand blowing device 100; secondly, it ensures a more uniform airflow distribution within the inner cavity 201, preventing the problem of strong airflow at the center and weak airflow at the edges, and ensuring consistent airflow intensity at the multiple openings 205.

[0031] In some embodiments, the loading plate 20 can be a single, continuous structure, meaning it is manufactured as a single piece through integral processing or molding, rather than an assembly of multiple parts. In this case, the loading plate 20 can be a hollow structure, i.e., it has an internal cavity, which is the inner cavity 201 described in the above embodiments. This single-piece structure enhances the structural strength of the loading plate 20, reduces the likelihood of deformation and damage, and improves the stability and reliability of the sandblasting device 100.

[0032] In other embodiments, the loading plate 20 can be a modular structure, meaning that the loading plate 20 can be assembled from at least two independent parts. Specifically, please refer to... Figure 2 The loading plate 20 includes a body 21 and a cover 23. The body 21 and the cover 23 are joined together by a detachable or non-detachable connection method to form the loading plate 20. Detachable connection methods include, but are not limited to, snap-fit ​​or bolted connections; non-detachable connection methods include, but are not limited to, adhesive or welding. It should be noted that the following definitions of detachable and non-detachable connections will be used and will not be elaborated further.

[0033] The vent 203 and the opening 205 can be respectively provided on the body 21 and the cover 23. In some embodiments, the body 21 is provided with a groove, and when the body 21 and the cover 23 are connected, the groove on the body 21 forms the inner cavity 201 of the loading plate 20. In this case, the cover 23 can be a flat plate structure. In other embodiments, the cover 23 is provided with a groove, and when the body 21 and the cover 23 are connected, the groove on the cover 23 forms the inner cavity 201 of the loading plate 20. In this case, the body 21 can be a flat plate structure. In still some embodiments, both the body 21 and the cover 23 are provided with grooves, and when the body 21 and the cover 23 are connected, the groove on the body 21 and the groove on the cover 23 communicate with each other and together form the inner cavity 201 of the loading plate 20.

[0034] In some embodiments of this application, the body 21 is a flat plate structure, and the cover 23 is provided with a groove. When the body 21 and the cover 23 are connected, the groove on the cover 23 forms the inner cavity 201 of the loading plate 20. The opening 205 is provided in the body 21, and the air hole 203 is provided in the cover 23. The cover 23 is located on the side of the body 21 opposite to the positioning plate 10.

[0035] In the sandblasting device 100, the sandblasting needle 30 is used to spray gas into the threaded holes of the workpiece. In this application, there are multiple sandblasting needles 30, each corresponding to a multiple through holes 103 and a multiple opening 205. In this way, the multiple sandblasting needles 30 can simultaneously sandblast multiple threaded holes on the workpiece to be sandblasted, effectively improving cleaning efficiency.

[0036] Specifically, when the workpiece to be sandblasted is fixed on the positioning surface 101, external gas can flow into the inner cavity 201 through the air hole 203. In this case, the gas in the inner cavity 201 can be dispersed to multiple openings 205 and sprayed into the threaded hole of the workpiece through the air passages of multiple sandblasting needles 30 installed in the multiple openings 205, thereby cleaning the residual sand inside the threaded hole of the workpiece. One end of the sandblasting needle 30 is provided with a through hole 103, which serves to fix the sandblasting needle 30, thus preventing the sandblasting needle 30 from shifting during the air blowing process and damaging the threaded hole, thereby improving the processing yield of the workpiece.

[0037] Please combine Figure 5 In some embodiments of this application, the sandblasting needle 30 includes a needle base 31 and a needle tip 33. The needle base 31 is installed through the opening 205 and has a first channel that communicates with the inner cavity 201. The needle tip 33 is connected to the needle base 31 and has a second channel that communicates with the first channel and together with the first channel forms an air passage. When the workpiece to be sandblasted is fixed on the positioning surface 101, the needle tip 33 is configured to extend into the threaded hole of the workpiece.

[0038] The needle holder 31 serves as the support and connection part of the sandblasting needle 30, used to fix the needle tip 33 and to mate with an external structure (e.g., the opening 205 of the loading plate 20). For example, the needle holder 31 may be provided with threads or a locking structure to facilitate its installation within the opening 205. Specifically, the needle holder 31 has a hollow structure, meaning it has a first channel. When the needle holder 31 is installed in the opening 205, the first channel communicates with the inner cavity 201, and gas in the inner cavity 201 can flow out into the first channel.

[0039] The needle tip 33 is the part of the sandblasting needle 30 used to deliver airflow. The needle tip 33 passes through the through hole 103 and can extend into the threaded hole of the workpiece for sandblasting. Specifically, the needle tip 33 has a hollow structure, that is, it has a second channel. When the needle tip 33 and the needle base 31 are connected, the first and second channels communicate and together form the air passage of the sandblasting needle 30. Thus, the needle tip 33 can spray gas from the inner cavity 201 into the threaded hole. It can be understood that the cross-sectional dimension of the needle tip 33 (the cross-section obtained by a plane perpendicular to the height direction Z) is smaller than the cross-sectional dimension of the needle base 31, which facilitates the insertion of the needle tip 33 into the threaded hole of the workpiece, improving the applicability of the sandblasting needle 30.

[0040] In some embodiments, the needle holder 31 and the needle tip 33 can be an integral structure or separate structures. When the needle holder 31 and the needle tip 33 are an integral structure, the connection between them is more robust, reducing the possibility of separation during the operation of the sandblasting needle 30, ensuring the normal operation of the sandblasting device 100, and reducing the number of parts in the sandblasting device 100, thus improving assembly efficiency. When the needle holder 31 and the needle tip 33 are separate structures, they can be detachably connected or non-detachably connected.

[0041] In some embodiments, a seal may be provided between the needle holder 31 and the opening 205. The seal is used to seal the gap between the inner walls of the needle holder 31 and the opening 205, preventing gas leakage in the inner cavity 201 and ensuring the blowing pressure of the sand-blowing needle 30. The seal may be integrally formed on the outer peripheral wall of the needle holder 31, integrally formed on the inner wall of the opening 205, or it may be a separate component disposed between the needle holder 31 and the inner wall of the opening 205. In other embodiments, the needle holder 31 and the opening 205 may be connected and sealed by an interference fit. For example, the outer wall of the needle holder 31 has a protrusion that can interfere with the inner wall of the opening 205 to achieve the installation and sealing of the needle holder 31 in the opening 205.

[0042] In some embodiments, the blown needle 30 is made of plastic. It should be noted that the plastic includes, but is not limited to, polyurethane, PEEK, and PTFE. This reduces the weight of the blown needle 30, contributing to the lightweight design of the blown device 100; it also prevents the blown needle 30 from scratching the threaded hole, improving product yield and ensuring subsequent thread fit accuracy.

[0043] In some embodiments, both the needle holder 31 and the needle tip are made of plastic. In other embodiments, the needle tip is made of plastic, while the needle holder 31 can be made of other materials, such as metal. This improves the structural strength of the needle holder 31 and enhances its stability when installed in the opening 205.

[0044] In the sandblasting device 100 of this application embodiment, a plurality of sandblasting needles 30 correspond to a plurality of through holes 103 and a plurality of openings 205 respectively, and the air passage of the sandblasting needles 30 can allow gas in the inner cavity 201 to flow out. When the workpiece to be sandblasted is fixed on the positioning surface 101, the sandblasting needles 30 are configured to extend into the corresponding threaded holes of the workpiece for sandblasting. Thus, compared with the related art of using a handheld high-pressure air gun to blow the threaded holes of the workpiece one by one, the plurality of sandblasting needles 30 can simultaneously blow sand into multiple threaded holes on the workpiece, effectively improving cleaning efficiency. Furthermore, since the sandblasting needles 30 can extend into the threaded holes of the workpiece for sandblasting, the airflow directly enters the depth of the threaded holes of the workpiece, resulting in less residual sand in the threaded holes after sandblasting, effectively improving the cleaning effect and ensuring the subsequent thread fit accuracy.

[0045] In addition, the sand blowing device 100 of the present application embodiment can perform automated operation. On the one hand, it can make the sand blowing operation not rely on the experience of workers, that is, it does not need to judge whether the residual sand inside the threaded hole is cleaned based on experience, which is conducive to realizing automated large-scale production. On the other hand, it can reduce dust pollution and prevent harm to the health of operators.

[0046] The sand blowing device 100 will be further described below with reference to the accompanying drawings.

[0047] Please see Figure 2 and Figure 4 In some embodiments, the sand blowing device 100 further includes an adjusting member 40 connected to the positioning plate 10, and the adjusting member 40 is configured to adjust the distance between the positioning plate 10 and the loading plate 20 in the height direction Z.

[0048] The adjusting member 40 is a mechanical or electromechanical device used to adjust the relative position (e.g., height, angle, spacing, etc.) between two components. In this application, the adjusting member 40 is a device in the sandblasting apparatus 100 that can precisely adjust the spacing between the positioning plate 10 and the loading plate 20 in the height direction Z. The adjusting member 40 can adjust the vertical spacing between the positioning plate 10 and the loading plate 20 manually or automatically to adjust the size of the sandblasting needle 30 extending into the threaded hole of the workpiece, ensuring that the tip 33 of the sandblasting needle 30 extends into the threaded hole of the workpiece without scraping or bumping the threaded hole.

[0049] For example, the adjusting component 40 includes a screw. When it is necessary to adjust the distance between the positioning plate 10 and the loading plate 20 in the height direction Z, the screw can be manually operated to rotate and drive the positioning plate 10 and / or the loading plate 20 to move in the height direction Z, thereby adjusting the distance between the positioning plate 10 and the loading plate 20 in the height direction Z. As another example, the adjusting component 40 includes a motor and a transmission component. The transmission component is connected to the positioning plate 10 and / or the loading plate 20. When the motor is running stably, the driving force of the motor is transmitted to the transmission component, which drives the positioning plate 10 and / or the loading plate 20 to move in the height direction Z, thereby adjusting the distance between the positioning plate 10 and the loading plate 20 in the height direction Z.

[0050] In some embodiments of this application, the adjusting member 40 includes a support column 41 and a bushing 43. The support column 41 is connected to the positioning plate 10, and the bushing 43 is connected to the support column 41 and located between the positioning plate 10 and the loading plate 20. Multiple bushings 43 are included, and the multiple bushings 43 have different dimensions in the height direction Z. The support column 41 is configured to be interchangeably connected to any one of the multiple bushings 43 to adjust the spacing between the positioning plate 10 and the loading plate 20. Exemplarily, one end of the support column 41 is connected to the positioning plate 10, and the other end of the support column 41 passes through the loading plate 20 and is connected to the support base 50 (described below).

[0051] Specifically, the support column 41 can be connected to the positioning plate 10 via bolts, clips, welding, or adhesive bonding. The bushing 43 is fitted onto the support column 41 and located between the positioning plate 10 and the loading plate 20. The support column 41 can be connected to bushings 43 of different sizes, allowing different sized bushings 43 to be positioned between the positioning plate 10 and the loading plate 20, thereby adjusting the distance between the positioning plate 10 and the loading plate 20. This makes adjusting the distance using the adjusting component 40 simpler and more reliable, eliminating the need for complex structures and ensuring a stable adjusted distance, preventing any risk of changes in the distance between the positioning plate 10 and the loading plate 20 during the operation of the sandblasting device 100.

[0052] It should be noted that in other embodiments, the support column 41 can also be interchangeably connected to at least two of the plurality of bushings 43, and at least two bushings 43 are located between the positioning plate 10 and the loading plate 20. In this way, by combining bushings 43 of different sizes, the range of adjustment of the distance between the positioning plate 10 and the loading plate 20 can be increased, thereby improving the applicability of the sand blowing device 100.

[0053] In some embodiments, the adjusting members 40 include multiple members arranged at intervals and configured to jointly adjust the distance between the positioning plate 10 and the loading plate 20 in the height direction Z. This improves the stability of the distance adjustment and prevents the positioning plate 10 from tilting due to unilateral force. For example, when the positioning plate 10 is square, four adjusting members 40 are included, in which case the four adjusting members 40 are respectively connected to the four corners of the positioning plate 10.

[0054] Please see Figure 2 In some embodiments, the sand blowing device 100 further includes a support base 50, which is located on the side of the loading plate 20 away from the positioning plate 10. The support base 50 is configured to support the loading plate 20. The adjusting member 40 is also connected to the support base 50 and passes through the loading plate 20. The adjusting member 40 is spaced apart from the inner cavity 201.

[0055] Specifically, the support base 50 is the basic support structure in the sandblasting device 100, used to fix and support components such as the loading plate 20 of the sandblasting device 100. The adjusting member 40 is also connected to the support base 50 and passes through the loading plate 20. That is, the opposite ends of the adjusting member 40 can be connected to the positioning plate 10 and the support base 50 respectively, and the adjusting member 40 can pass through the loading plate 20. In this way, the adjusting member 40 can not only adjust the distance between the positioning plate 10 and the loading plate 20, but also realize the connection between the positioning plate 10, the loading plate 20, and the support base 50, improving the structural stability of the sandblasting device 100 and ensuring that each structure of the sandblasting device 100 can maintain the correct position and posture during operation.

[0056] Furthermore, the adjusting member 40 is spaced apart from the inner cavity 201, that is, the adjusting member 40 does not pass through the inner cavity 201. This ensures the sealing of the inner cavity 201 and prevents gas leakage in the inner cavity 201. This can increase the blowing pressure of the sand-blowing needle 30 on the threaded hole and ensure the cleaning effect of the sand-blowing needle 30 on the residual sand inside the threaded hole.

[0057] Please combine Figure 4 In some embodiments, the support base 50 is provided with an installation space 501, and the sand blowing device 100 also includes an air source 60, at least a portion of which is located within the installation space 501. The air source 60 is connected to an air hole 203 and is configured to introduce gas into the inner cavity 201 through the air hole 203.

[0058] The gas source 60 is a device that can supply gas to the sand blowing device 100. The gas source 60 includes, but is not limited to, a compressor and a gas storage tank. For example, when the gas source 60 is a compressor, the gas source 60 can provide continuously compressed gas, and the pressure and flow rate of the gas provided are adjustable.

[0059] In some embodiments of this application, the support base 50 includes a support plate 51 and two brackets 53. The support plate 51 is configured to support the loading plate 20, and the brackets 53 are connected to the side of the support plate 51 opposite to the loading plate 20. The two brackets 53 are spaced apart from each other, and the installation space 501 is formed by at least the support plate 51 and the two brackets 53. Thus, the support plate 51 and the two brackets 53 can together form a hollow support base 50; in other words, the support base 50 has an installation space 501. At least a portion of the air source 60 is located within the installation space 501. Therefore, compared to a support base 50 without an installation space 501, for example, where the support base 50 is a solid structure and the air source 60 is located outside the support base 50, the installation space 501 effectively reduces the space occupied by the support base 50 and the air source 60, which is beneficial for miniaturizing the sandblasting device 100 and facilitating its placement and layout in the factory.

[0060] Specifically, in some embodiments, the air inlet pipe of the air source 60 can pass through the support base 50 and communicate with the air hole 203. Thus, when the air source 60 is activated, it can introduce high-pressure gas into the inner cavity 201 through the air hole 203. The gas in the inner cavity 201 is diverted to multiple openings 205 and enters the air passage of the sandblasting needle 30 installed in the openings 205. Finally, the gas flows out through the needle tip 33 of the sandblasting needle 30 into the threaded hole of the workpiece to sandblast the threaded hole. It can be understood that the sandblasting device 100 can control the sandblasting pressure of the sandblasting needle 30 on the threaded hole of the workpiece by adjusting the gas pressure and flow rate provided by the air source 60.

[0061] When the workpiece to be sandblasted is placed on the positioning surface 101 manually or by a mechanical device such as a robotic arm, the workpiece may not be completely aligned with the positioning surface 101. For example, if the workpiece is misaligned (there is a certain angle between the workpiece and the positioning surface 101), the sandblasting needle 30 may not be able to penetrate into the threaded hole of the workpiece for sandblasting, affecting the normal operation of the sandblasting device 100. Furthermore, if the workpiece is not placed in the correct position, the sandblasting needle 30 and the workpiece may easily collide, causing damage to the sandblasting needle 30 or the workpiece.

[0062] Please see Figure 1 , Figure 2 and Figure 4In some embodiments of this application, the sandblasting device 100 further includes a detection element 70, which is disposed on the positioning plate 10 and / or the loading plate 20. The detection element 70 is configured to detect whether the workpiece to be sandblasted is properly installed on the positioning surface 101. That is, the detection element 70 can detect whether the workpiece to be sandblasted is placed or misaligned. Thus, the setting of the detection element 70 can avoid misalignment between the sandblasting needle 30 and the threaded hole due to misalignment of the workpiece to be sandblasted, thereby not only improving the stability and reliability of the operation of the sandblasting device 100, but also preventing collision between the sandblasting needle 30 and the workpiece to be sandblasted, which could damage the sandblasting needle 30 or the workpiece to be processed. In addition, the setting of the detection element 70 can prevent the sandblasting device 100 from operating without a workpiece by determining whether the workpiece to be processed is in place, thereby reducing energy consumption.

[0063] Specifically, in some embodiments, when the detection element 70 detects that the workpiece to be sanded is not installed in place on the positioning surface 101, the air source 60 is not activated, and the sanding needle 30 will not sand the threaded hole; when the detection element 70 detects that the workpiece to be sanded is installed in place on the positioning surface 101, the sanding device 100 can control the air source 60 to be activated so that the sanding needle 30 sands the threaded hole of the workpiece, and the sanding device 100 can shut off the air source 60 when the sanding time reaches a predetermined time to complete the sanding of the threaded hole.

[0064] It should be noted that, in some embodiments, the detection element 70 includes, but is not limited to, a distance sensor, a pressure sensor, and a mechanical micro switch. The distance sensor may include, but is not limited to, a laser rangefinder, an infrared rangefinder, a photoelectric switch, an ultrasonic rangefinder, and a visual rangefinder. For ease of understanding, the following embodiments will use the example of the detection element 70 including a distance sensor.

[0065] Specifically, the detection element 70 (distance sensor) can sense the distance of the workpiece to be sandblasted (e.g., the distance between the workpiece to be sandblasted and the positioning surface 101). If the distance of the workpiece to be sandblasted does not match a set value, for example, if the workpiece to be sandblasted is not in contact with the positioning surface 101, it is determined that the workpiece to be sandblasted is not properly installed on the positioning surface 101; if the distance of the workpiece to be sandblasted reaches the set value, it is determined that the workpiece to be sandblasted is properly installed on the positioning surface 101. Optionally, the detection element 70 can also determine that the workpiece to be sandblasted is properly installed on the positioning surface 101 if the distance of the workpiece to be sandblasted reaches the set value and the duration for which the distance no longer changes exceeds a set duration.

[0066] In some embodiments, the sand-blowing needle 30 includes a variety of needles with different flow areas in their air passages. The opening 205 is configured to replaceably mount any of the various sand-blowing needles 30 to adjust the sand-blowing pressure of the sand-blowing needle 30.

[0067] Specifically, in some embodiments, the opening 205 allows for the adjustment of the blowing pressure of the blowing needle 30 by using blowing needles 30 with different flow areas in the air passage. It should be noted that the flow area refers to the effective cross-sectional area through which gas actually passes. The flow area affects the gas velocity, flow rate, and pressure loss. Since the flow areas of the air passages of various blowing needles 30 are different, that is, the effective cross-sectional area through which gas can pass is different for the air passages of various blowing needles 30, thus, with the same air intake volume, the blowing pressure of the various blowing needles 30 will be different.

[0068] In some embodiments, the different flow areas of the air passages of the various sandblasting needles 30 may include: the first passage of the various sandblasting needles 30 having the same flow area, and the second passage of the various sandblasting needles 30 having different flow areas; or, both the first passage and the second passage of the various sandblasting needles 30 having different flow areas; or, the first passage of the various sandblasting needles 30 having different flow areas, and the second passage of the various sandblasting needles 30 having the same flow area.

[0069] In some embodiments of this application, the operation steps of the sandblasting device 100 can be as follows: First, a manual or robotic arm or other mechanical device picks up a workpiece to be sandblasted and places it on the positioning plate 10, and the positioning surface 101 of the positioning plate 10 positions the workpiece to be sandblasted, ensuring that the sandblasting needle 30 extends into the threaded hole of the workpiece to be sandblasted; then, the detection element 70 (distance sensor) senses the distance of the workpiece to be sandblasted, and when the distance reaches the set value and no longer changes for a preset time (e.g., 3 seconds), it is determined that the workpiece to be sandblasted is installed in place on the positioning surface 101; subsequently, the air source 60 starts to circulate air, and the high-pressure airflow flows into the inner cavity 201 through the air hole 203 of the loading plate 20. The airflow is distributed to each opening 205 in the inner cavity 201 and flows into the sandblasting needle 30 installed at each opening 205, and finally blows into the threaded hole of the workpiece through the sandblasting needle 30; finally, after the sandblasting time reaches the predetermined time, the air source 60 is turned off, and the sandblasting is completed.

[0070] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, other implementation methods can be derived from the above embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sand blowing device, characterized in that, include: The positioning plate has a positioning surface and multiple through holes. The positioning surface is configured to position the workpiece to be sandblasted, and the multiple through holes correspond to multiple threaded holes on the workpiece to be sandblasted. A loading plate is disposed opposite to the positioning plate along the height direction of the sand blowing device. The loading plate has an inner cavity, air holes, and multiple openings. The air holes are opened on the side of the loading plate away from the positioning plate, and the multiple openings are opened on the side of the loading plate facing the positioning plate. The multiple openings correspond to multiple through holes, and the air holes and multiple openings are all connected to the inner cavity. The air holes are configured to allow external gas to enter the inner cavity. and Multiple sandblasting needles correspond to multiple through holes and multiple openings respectively. One end of each sandblasting needle passes through a through hole, and the other end passes through and is installed in an opening. Each sandblasting needle has a through air passage that communicates with the inner cavity and is configured to allow gas in the inner cavity to flow out. When the workpiece to be sandblasted is fixed on the positioning surface, the sandblasting needle is configured to extend into the corresponding threaded hole for sandblasting.

2. The sand blowing device according to claim 1, characterized in that, The sand blowing device also includes: An adjusting member, connected to the positioning plate, is configured to adjust the distance between the positioning plate and the loading plate in the height direction.

3. The sand blowing device according to claim 2, characterized in that, The sand blowing device also includes: A support base is provided on the side of the loading plate opposite to the positioning plate. The support base is configured to support the loading plate. The adjusting member is also connected to the support base and passes through the loading plate. The adjusting member is spaced apart from the inner cavity.

4. The sand blowing device according to claim 3, characterized in that, The support base has an installation space, and the sandblasting device further includes: An air source, at least partially located within the installation space, passes through the support base and communicates with the air hole, and is configured to introduce gas into the inner cavity through the air hole.

5. The sand blowing device according to claim 4, characterized in that, The support base includes a support plate and two brackets. The support plate is configured to support the loading plate. The brackets are connected to the side of the support plate opposite to the loading plate. The two brackets are spaced apart from each other. The installation space is formed by at least the support plate and the two brackets.

6. The sand blowing device according to claim 3, characterized in that, The adjusting component includes a support column and a bushing. One end of the support column is connected to the positioning plate, and the other end of the support column passes through the loading plate and is connected to the support seat. The bushing is connected to the support column and is located between the positioning plate and the loading plate. There are multiple bushings, and the multiple bushings have different dimensions in the height direction of the sand blowing device. The support column is configured to be interchangeably connected to any one of the multiple bushings to adjust the distance between the positioning plate and the loading plate.

7. The sand blowing device according to claim 1, characterized in that, The sand blowing device also includes: A detection element is disposed on the positioning plate and / or the loading plate, the detection element being configured to detect the workpiece to be sandblasted on the positioning surface.

8. The sand blowing device according to claim 1, characterized in that, The material of the sandblasting needle includes plastic.

9. The sand blowing device according to claim 1, characterized in that, The sand-blowing needles include a variety of types, each with a different flow area in its air passage. The opening is configured to replaceably mount any one of the various sand-blowing needles to adjust the sand-blowing pressure of the sand-blowing needle.

10. The sand blowing device according to claim 1, characterized in that, The sand-blowing needle includes: A needle holder, inserted and installed in the opening, the needle holder having a first channel communicating with the inner cavity; and The needle tip is connected to the needle base. The needle tip has a second channel that communicates with the first channel and together with the first channel forms the air passage. When the workpiece to be blown is fixed to the positioning surface, the needle tip is configured to be able to extend into the threaded hole.

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