Sand blasting fixing clamp

Abstract

The utility model belongs to the technical field of sand blasting, and discloses a sand blasting fixing clamp. The sand blasting fixing clamp comprises a first clamp body and second clamp bodies, the first clamp body is used for containing a part to be subjected to sand blasting, the second clamp bodies are provided with a plurality of parallel hollow-out parts and abutting parts which are sequentially and alternately arranged, when any second clamp body covers the first clamp body, the abutting parts abut against the part to be subjected to sand blasting, and when any second clamp body covers the second clamp body, the part to be subjected to sand blasting is placed on the second clamp body. The hollowed-out parts are used for carrying out sand blasting on the to-be-sand-blasted part, and the hollowed-out parts of the second clamps can sequentially expose part of the to-be-sand-blasted face of the to-be-sand-blasted part so as to carry out sand blasting on the whole to-be-sand-blasted face. According to the sand blasting device, the sand blasting precision and quality can be improved, meanwhile, it is guaranteed that the sand blasting medium can be evenly sprayed to all parts of the part to be subjected to sand blasting, the situation that sand blasting is not uniform or the sand blasting medium is not sprayed to part of positions is avoided, and therefore the sand blasting uniformity of the part to be subjected to sand blasting and the integrity of the sand blasting position can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sandblasting, in particular to a sandblasting fixing fixture. Background Art

[0002] Heat sink materials act as heat sinks in electronic packaging, absorbing heat and dissipating it into the surrounding environment through direct contact with the heat source. Before the heat sink material is directly contacted with the heat source, it needs to be sandblasted. Compressed air is used as the power to form a high-speed jet beam, and the spray material is sprayed at high speed onto the surface of the heat sink material. The surface is treated to make its surface smooth and uniform.

[0003] In the prior art, the heat sink material is usually limited and placed in a fixing fixture, and the part of the heat sink material that needs to be sandblasted is completely exposed outside the fixing fixture, so that the heat sink material can be sandblasted through the exposed part. This sandblasting method can easily cause the heat sink material exposed outside the fixing fixture to be positionally offset during the sandblasting process, resulting in uneven sandblasting of the heat sink material and poor sandblasting effect. Utility Model Content

[0004] The utility model aims to provide a sandblasting fixing fixture, which helps to improve the accuracy, quality and uniformity of sandblasting, so as to ensure the uniformity of sandblasting and good sandblasting effect on the parts to be sandblasted.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] Sandblasting fixture, including:

[0007] a first fixture on which the workpiece to be sandblasted is placed;

[0008] There are at least two second clamps, and the second clamps are provided with multiple parallel hollow parts and pressing parts arranged alternately in sequence. When any one of the second clamps is covered on the first clamp, the pressing part presses against the workpiece to be sandblasted, and the hollow part is used to sandblast the workpiece to be sandblasted, and the hollow parts of each second clamp can expose part of the surface to be sandblasted of the workpiece to be sandblasted in sequence so as to sandblast the entire surface to be sandblasted.

[0009] Preferably, two second clamps are provided, and the two second clamps are respectively a first sub-clamp and a second sub-clamp. When the first sub-clamp is stacked on the second sub-clamp, the pressing portion on the first sub-clamp corresponds to the hollow portion on the second sub-clamp, and the hollow portion on the first sub-clamp corresponds to the pressing portion on the second sub-clamp.

[0010] Preferably, the sandblasting fixture further comprises:

[0011] The buffer member is arranged on the first fixture, and a through hole is provided on the buffer member. The workpiece to be sandblasted is limitedly installed in the through hole.

[0012] Preferably, the depth of the through hole is equal to the thickness of the workpiece to be sandblasted.

[0013] Preferably, the buffer member is provided with a plurality of through holes arranged at intervals, one of the workpieces to be sandblasted is limitedly installed in one of the through holes, and when the second fixture cover is arranged on the first fixture, the hollow portion is communicated with the through hole.

[0014] Preferably, the outline size of the through hole is smaller than the outline size of the workpiece to be sandblasted.

[0015] Preferably, the second clamp is made of polymer material.

[0016] Preferably, one of the first clamp and the second clamp is provided with a protrusion, and the other is provided with a groove, and the protrusion is snap-connected with the groove.

[0017] Preferably, the sandblasting fixture further comprises:

[0018] A fixing member is used to detachably connect the first clamp and the second clamp.

[0019] Preferably, the fixing member includes a bolt, the first fixture is provided with a first mounting hole, the second fixture is provided with a second mounting hole, and the bolt is used for threadedly fastening the aligned first mounting hole and the second mounting hole.

[0020] Beneficial effects of the utility model:

[0021] By setting at least two second clamps, and the hollow parts of each second clamp are arranged alternately in sequence; when one of the second clamp covers is placed on the first clamp, the pressing part of the second clamp presses against the workpiece to be sandblasted placed on the first clamp, and sandblasts the workpiece to be sandblasted through the hollow part; when another second clamp cover is replaced and placed on the first clamp, at this time, the pressing part of the second clamp presses against the part of the workpiece to be sandblasted that has been sandblasted by the hollow part of the previous second clamp, and sandblasts the part of the workpiece to be sandblasted that has been pressed by the pressing part of the previous second clamp through the hollow part of the second clamp; on the one hand, it is possible to The mutual cooperation of the pressing parts of the two clamps presses the workpiece to be sandblasted, so that the workpiece to be sandblasted can be pressed tightly during the entire sandblasting process, ensuring the position stability of the workpiece to be sandblasted on the first clamp, and will not be offset or shaken due to external force, which helps to improve the accuracy and quality of sandblasting; on the other hand, sandblasting can be carried out by mutual cooperation of the hollow parts of each second clamp, ensuring that the sandblasting medium can be evenly sprayed to various parts of the workpiece to be sandblasted, avoiding uneven sandblasting or partial positions without sandblasting medium, achieving uniformity and integrity of sandblasting of the workpiece to be sandblasted, and thus ensuring a better sandblasting effect on the workpiece to be sandblasted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the exploded structure of the sandblasting fixing fixture provided by an embodiment of the present utility model;

[0023] Figure 2 It is an axonometric view of two second clamps of the sandblasting fixing clamp provided by an embodiment of the present utility model;

[0024] Figure 3 1 is a front view of two second clamps of the sandblasting fixing clamp provided by an embodiment of the present utility model;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is an axonometric view of a buffer member of a sandblasting fixture provided by an embodiment of the present utility model embedded in a first fixture;

[0027] Figure 6 This is a front view of a buffer member of a sandblasting fixing fixture provided by an embodiment of the present utility model;

[0028] Figure 7 It is a front view of a buffer member of a sandblasting fixing fixture provided by another embodiment of the present utility model;

[0029] Figure 8 This is a schematic structural diagram of the first clamp and the second clamp provided in an embodiment of the present utility model when not assembled;

[0030] Figure 9 It is a cross-sectional view of the sandblasting fixing fixture provided in an embodiment of the present utility model.

[0031] In the picture:

[0032] 10. Sandblasting fixture;

[0033] 1. First fixture; 11. Protrusion; 12. First mounting hole;

[0034] 2. Second clamp; 21. Hollow portion; 22. Pressing portion; 23. Groove; 24. Second mounting hole;

[0035] 3. Buffer; 31. Through hole;

[0036] 4. Parts to be sandblasted; 5. Fixed parts. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0038] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] like Figure 1 and Figure 2 As shown, a sandblasting fixing fixture 10 is provided in this embodiment, which includes a first fixture 1 and a second fixture 2, wherein the first fixture 1 is used to place the workpiece 4 to be sandblasted, and at least two second fixtures 2 are provided, and the second fixture 2 is provided with a plurality of hollow portions 21 and pressing portions 22 that are parallel to each other and arranged alternately in sequence. When any second fixture 2 is covered on the first fixture 1, the pressing portion 22 of the second fixture 2 is pressed against the workpiece 4 to be sandblasted, and the hollow portion 21 of the second fixture 2 is used to sandblast the workpiece 4 to be sandblasted, and the hollow portions 21 of each of the second fixtures 2 can expose part of the surface to be sandblasted of the workpiece 4 to be sandblasted in sequence to sandblast the entire surface to be sandblasted.

[0042] Compared with the prior art, the sandblasting fixing fixture 10 in this embodiment changes the pressing and sandblasting methods of the workpiece 4 to be sandblasted, by providing a first fixture 1 for placing the workpiece 4 to be sandblasted and at least two second fixtures 2, and each second fixture 2 is provided with a plurality of parallel hollow portions 21 and pressing portions 22 that are arranged alternately in sequence; when any second fixture 2 is covered on the first fixture 1, the pressing portion 22 presses against the workpiece 4 to be sandblasted, and the hollow portion 21 is used to sandblast the exposed portion of the workpiece 4 to be sandblasted. During the sandblasting process, the pressing portion 22 can press against the workpiece 4 to be sandblasted, and the hollow portion 21 can sandblast the exposed portion of the workpiece 4 to be sandblasted, thereby ensuring the position stability of the workpiece 4 to be sandblasted on the first fixture 1, so that the position of the workpiece 4 to be sandblasted will not be offset or shaken due to external force during the sandblasting process. This not only helps to improve the accuracy and quality of sandblasting, but also ensures the smooth progress of the entire sandblasting operation. Through the firm pressure of the second clamp 2, the workpiece 4 to be sandblasted can always be maintained in the preset sandblasting position, so that the impact force of the sandblasting acts evenly on its surface, thereby achieving a more uniform sandblasting effect on the surface of the workpiece 4 to be sandblasted exposed from the hollow portion 21; at the same time, the hollow portions 21 of each of the second clamps 2 can expose part of the sandblasting surface of the workpiece 4 to be sandblasted in turn to sandblast the entire surface to be sandblasted, so that during the sandblasting process, each hollow portion 21 can cooperate with each other to sandblast various positions of the workpiece 4 to be sandblasted in turn, and the hollow portions 21 arranged alternately in sequence can ensure that the sandblasting medium can be evenly sprayed to various positions of the workpiece 4 to be sandblasted, avoiding uneven sandblasting or incomplete sandblasting of some positions, thereby achieving uniformity and integrity of sandblasting of the workpiece 4 to be sandblasted.

[0043] Alternatively, as Figure 1 and Figure 2 As shown, in this embodiment, the hollow portion 21 is configured as an elongated strip, and its extended length is greater than the outline dimensions of the workpiece 4 to be sandblasted. That is, the hollow portion 21 is specifically a long, strip-shaped through-hole provided on the second fixture 2, and the pressing portion 22 is the portion between two adjacent long, strip-shaped through-holes. The entire structure of the workpiece 4 to be sandblasted is completely located within the long, strip-shaped through-holes, thereby enabling simultaneous sandblasting of multiple workpieces 4 along the length of the long, strip-shaped through-holes. In other embodiments, the shape of the hollow portion 21 can be adapted to the shape of the workpiece 4 to be sandblasted. The specific shape of the hollow portion 21 is not limited here, as long as the workpiece 4 to be sandblasted can be sandblasted through the hollow portion 21.

[0044] Optionally, in this embodiment, two identical first fixtures 1 are provided to facilitate manual flipping of the workpiece 4 to be sandblasted, thereby facilitating separate sandblasting of the upper and lower opposing sides of the workpiece 4. In other embodiments, a single first fixture 1 may be provided depending on process requirements to facilitate manual flipping of the workpiece 4 to be sandblasted.

[0045] Alternatively, as Figure 2-Figure 4 As shown, in this embodiment, two second clamps 2 are provided, and the two second clamps 2 are respectively a first sub-clamp and a second sub-clamp. When the first sub-clamp is stacked on the second sub-clamp, the pressing portion 22 on the first sub-clamp corresponds to the hollow portion 21 on the second sub-clamp, and the hollow portion 21 on the first sub-clamp corresponds to the pressing portion 22 on the second sub-clamp.

[0046] Specifically, after the first sub-clamp is used to complete the pressing and sandblasting of the workpiece 4 to be sandblasted, the second sub-clamp is replaced, so that the pressing portion 22 on the second sub-clamp is pressed against the part of the workpiece 4 to be sandblasted that has been sandblasted by the hollow portion 21 of the first sub-clamp, and the hollow portion 21 on the second sub-clamp is used to sandblast the part of the workpiece 4 to be sandblasted that has been pressed by the pressing portion 22 of the first sub-clamp, ensuring that different positions of the workpiece 4 to be sandblasted can be sandblasted evenly and completely, thereby improving the sandblasting effect and ensuring the uniformity and integrity of the sandblasting.

[0047] Alternatively, in other embodiments, the second fixtures 2 may be provided in three or more configurations, and the hollow portions 21 of the three or more second fixtures 2 may be alternately arranged in sequence, so that the hollow portions 21 of all the second fixtures 2 can form the shape of the workpiece 4 to be sandblasted, thereby completing the single-sided sandblasting treatment of the workpiece 4 to be sandblasted. Figure 4 As shown, direction D is the parallel arrangement direction of the hollow portions 21 in the second clamp 2. In this embodiment, the width b of the hollow portions 21 in the first and second sub-clamps, the width h of the pressing portions 22, and the spacing d between two adjacent hollow portions 21 are all the same.

[0048] Further, if Figure 5 As shown, the sandblasting fixture 10 further includes a buffer member 3, which is disposed in the first fixture 1. The buffer member 3 is provided with a through hole 31, and the workpiece 4 to be sandblasted is limitedly mounted in the through hole 31. By limiting the workpiece 4 to be sandblasted in the through hole 31 of the buffer member 3, the buffer member 3 provides effective buffering protection for the workpiece 4 to be sandblasted, and at the same time prevents the workpiece 4 from moving in the buffer member 3, thereby ensuring the stability of the installation position of the workpiece 4 to be sandblasted.

[0049] Alternatively, as Figure 6 As shown, in this embodiment, the through holes 31 are arranged in an array on the buffer 3, and the specific array rows x columns are 13x13. In other embodiments, as Figure 7 As shown, in other embodiments, the specific array of rows x columns of the through holes 31 can also be 5x5. It should be noted that the specifications of the through holes 31 need to be set according to the different sizes of the parts to be sandblasted 4. Here, the specific specifications of the through holes 31 are not limited.

[0050] Optionally, in this embodiment, the buffer member 3 is configured as a cushion that can be placed within the first fixture 1 to provide flexible support for the workpiece 4 to be sandblasted, preventing scratches on the surface of the workpiece 4. In other embodiments, the buffer member 3 can be a buffer block or a buffer strip that can flexibly wrap around the workpiece 4 to be sandblasted. Optionally, in this embodiment, the cushion can be made of rubber, silicone rubber, or a thermoplastic polyester elastomer, among others. In this embodiment, rubber is preferably used, as it has relatively high elasticity, can withstand deformation and impact, and can maintain good elasticity even after repeated use.

[0051] Furthermore, the depth of the through hole 31 is equal to the thickness of the workpiece 4 to be sandblasted. This ensures that the workpiece 4 to be sandblasted can be fully installed within the through hole 31, so that the surface of the workpiece 4 to be sandblasted is on the same horizontal plane as the surface of the through hole 31, and prevents the surface of the workpiece 4 to be sandblasted from being concave or convex relative to the surface of the through hole 31. In other words, making the depth of the through hole 31 equal to the thickness of the workpiece 4 to be sandblasted can ensure close connection and accurate alignment between the various components, thereby improving the stability and reliability of the overall structure. Optionally, in other embodiments, the depth of the through hole 31 can be slightly less than the thickness of the workpiece 4 to be sandblasted, so as to achieve the desired position limit for the workpiece 4 to be sandblasted.

[0052] Alternatively, as Figure 6 and Figure 7 As shown, a plurality of through holes 31 arranged at intervals are provided on the buffer 3, and a workpiece 4 to be sandblasted is limitedly installed in a through hole 31, so that multiple workpieces 4 to be sandblasted can be limitedly installed on the buffer 3 at the same time; and when the second clamp 2 is covered on the first clamp 1, the hollow portion 21 is connected to the through hole 31. The design of multiple through holes 31 enables batch sandblasting of the workpieces 4 to be sandblasted, thereby improving production efficiency; at the same time, when the second clamp 2 is covered on the first clamp 1, the hollow portion 21 is connected to the through hole 31, making the structure of the entire sandblasting fixture 10 more compact and ensuring that the workpieces 4 to be sandblasted in multiple through holes 31 corresponding thereto can be sandblasted simultaneously through a single hollow portion 21. When the sandblasting operation is performed, the sandblasting medium can be accurately sprayed onto the workpiece 4 to be sandblasted located in the through hole 31 through the hollow portion 21, thereby improving the accuracy and efficiency of the sandblasting. This design not only takes into account the installation stability of the workpiece 4 to be sandblasted, but also fully considers the smoothness and accuracy of the sandblasting process, providing a strong guarantee for high-quality sandblasting operations.

[0053] Furthermore, the outline dimensions of through-hole 31 are smaller than those of the workpiece 4 to be sandblasted. This slightly smaller outline dimension of through-hole 31 allows the workpiece 4 to fit within through-hole 31 with an interference fit, thereby limiting any movement or wiggle within through-hole 31. When the workpiece 4 is installed within through-hole 31, the inner wall of through-hole 31 closely conforms to the surface of the workpiece 4, ensuring that the workpiece 4 does not wiggle or move during the sandblasting process. This position-limiting installation not only improves the accuracy and quality of sandblasting but also effectively prevents damage to the workpiece 4 from the powerful impact of sandblasting.

[0054] Furthermore, the second clamp 2 is made of a polymer material. Polymer materials have certain properties such as corrosion resistance, toughness, and elasticity. When pressing the workpiece 4 to be sandblasted, they can protect the surface of the workpiece 4 to be sandblasted while providing a certain clamping force for the workpiece 4 to be sandblasted. Optionally, in this embodiment, the polymer material can be natural resin, natural rubber, synthetic resin, or synthetic rubber, etc. In this embodiment, synthetic resin is preferably used. Synthetic resin has good wear resistance, high strength, and light weight. It can effectively protect the surface of the workpiece 4 to be sandblasted and avoid scratches during pressing, while providing a certain clamping force.

[0055] Further, if Figure 8 and Figure 9 As shown, a protrusion 11 is provided on one of the first clamp 1 and the second clamp 2, and a groove 23 is provided on the other. The protrusion 11 is snap-connected with the groove 23. When the two clamps need to be connected or fixed, the protrusion 11 can be accurately snap-connected in the groove 23, so that the second clamp 2 can be positioned on the first clamp 1, thereby ensuring the positioning accuracy between the first clamp 1 and the second clamp 2.

[0056] The above-described clamping method is not only simple and efficient, but also forms a positioning guide for the connection between the first clamp 1 and the second clamp 2, and can provide a stable and reliable positioning effect. The cooperation between the protrusion 11 and the groove 23 allows the first clamp 1 and the second clamp 2 to be accurately positioned during use, preventing loosening or displacement, thereby facilitating the subsequent connection and fixation of the first clamp 1 and the second clamp 2. In this embodiment, a protrusion 11 is provided on the first clamp 1, and a groove 23 is provided on the second clamp 2.

[0057] Alternatively, as Figure 9As shown, in this embodiment, in order to achieve a better positioning effect for the first clamp 1 and the second clamp 2, a groove 23 is further provided on the first clamp 1, and correspondingly, a protrusion 11 is further provided on the second clamp 2. That is, a protrusion 11 and a groove 23 are respectively provided on the first clamp 1, and a groove 23 and a protrusion 11 are respectively provided on the second clamp 2. The protrusion 11 and the groove 23 are arranged parallel and spaced apart along the extension direction perpendicular to the hollow portion 21. The extension length of the protrusion 11 and the groove 23 is the same as the extension length of the hollow portion 21. The protrusion 11 on the first clamp 1 can be snap-connected with the groove 23 on the second clamp 2, and the groove 23 on the first clamp 1 can be snap-connected with the protrusion 11 on the second clamp 2. The above arrangement can form two guide connections when the first clamp 1 and the second clamp 2 are connected, making the guide positioning connection between the first clamp 1 and the second clamp 2 more stable. In other embodiments, there is no limitation on the specific number and length of the protrusions 11 and the grooves 23 , as long as they can achieve the guiding connection between the first clamp 1 and the second clamp 2 .

[0058] Further, if Figure 8 and Figure 9 As shown, the sandblasting fixture 10 also includes a fixing member 5, which is used to detachably connect the first fixture 1 and the second fixture 2. The first fixture 1 and the second fixture 2 can be conveniently connected through the fixing member 5 to form a more stable clamping connection structure, making the sandblasting fixture 10 easy to disassemble; at the same time, by removing the fixing member 5, the first fixture 1 and the second fixture 2 can be quickly replaced without having to replace the sandblasting fixture 10 as a whole, thereby facilitating disassembly and assembly and reducing usage costs. It should be noted that the specific structure of the fixing member 5 is not required, and it is sufficient to achieve a detachable connection between the first fixture 1 and the second fixture 2.

[0059] Optionally, in this embodiment, the fixing member 5 can be a bolt, a pin or a clip. In this embodiment, a bolt connection is preferred. A first mounting hole 12 is provided on the first clamp 1, and a second mounting hole 24 is provided on the second clamp 2. The bolt is used to threadably fasten the aligned first mounting hole 12 and the second mounting hole 24.

[0060] Alternatively, as Figure 8As shown, in this embodiment, four first mounting holes 12 and four second mounting holes 24 are respectively provided at the four corner positions of the first fixture 1 and the second fixture 2, and the four first mounting holes 12 and the four second mounting holes 24 correspond one to one. A bolt can pass through an aligned first mounting hole 12 and a second mounting hole 24 to fix the first fixture 1 and the second fixture 2 to form a sandblasting fixing fixture 10, which can apply a clamping force to the workpiece 4 to be sandblasted placed on the first fixture 1 while the second fixture 2 is tightened. It can ensure that during the sandblasting process, the first fixture 1 and the second fixture 2 are tightly combined, providing a stable and reliable fixation for the workpiece 4 to be sandblasted, further ensuring the accuracy and quality of the sandblasting process. In other embodiments, the first mounting holes 12 and the second mounting holes 24 can be set as required. For example, two first mounting holes 12 and two second mounting holes 24 are respectively provided at the diagonal positions of the first fixture 1 and the second fixture 2, which can ensure that the first fixture 1 and the second fixture 2 are smoothly tightened.

[0061] In order to facilitate understanding of the sandblasting fixture 10 disclosed in this embodiment, the specific sandblasting process of the sandblasting fixture 10 is now described:

[0062] S1. Use anhydrous ethanol to clean the two first clamps 1, the first sub-clamp, the second sub-clamp, and the buffer 3 respectively and let them dry.

[0063] S2. Place one of the first fixtures 1 on a plane, and place a buffer member 3 of a size suitable for the workpiece 4 to be sandblasted on the first fixture 1.

[0064] S3 , each workpiece 4 to be sandblasted is respectively installed in each through hole 31 of the buffer 3 with a limited position.

[0065] S4. The first sub-clamp is fitted to the first clamp 1 through the cooperation between the protrusion 11 and the groove 23 and pressed against the workpiece 4 to be sandblasted, and the first clamp 1 and the first sub-clamp are tightened and fixed with the bolt 5 to ensure that the workpiece 4 to be sandblasted is not loose before the first sandblasting operation.

[0066] S5. After the first sandblasting operation is completed, the first sub-clamp is disassembled to replace the second sub-clamp, and the second sub-clamp is attached to the first clamp 1 through the cooperation of the protrusion 11 and the groove 23 and pressed against the workpiece 4 to be sandblasted, and the second sandblasting operation is continued, so that the surface of the workpiece 4 to be sandblasted can be completely and evenly sandblasted.

[0067] S6. After the sandblasting of the first side of the workpiece 4 is completed, the second sub-clamp is released, and the first clamp 1 is placed on a plane. Then, the other first clamp 1 is attached to the first clamp 1 through the cooperation of the protrusion 11 and the groove 23 and pressed against the workpiece 4 to be sandblasted. The two first clamps 1 are simultaneously flipped 180° to manually turn over the workpiece 4 to be sandblasted. Finally, the above S4 and S5 operations are repeated to sandblast the second side of the workpiece 4 to ensure that the sandblasting of the two opposite first and second sides of the workpiece 4 to be sandblasted is uniform and the sandblasting is complete.

[0068] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Sandblasting fixture, characterized in that, include: A first fixture (1) for placing a workpiece (4) to be sandblasted; At least two second clamps (2) are provided. The second clamps (2) are provided with a plurality of hollow portions (21) and pressing portions (22) that are arranged in parallel and alternately in sequence. When any one of the second clamps (2) is covered on the first clamp (1), the pressing portion (22) presses against the workpiece (4) to be sandblasted. The hollow portions (21) are used to sandblast the workpiece (4) to be sandblasted. Moreover, the hollow portions (21) of each second clamp (2) can sequentially expose a portion of the surface to be sandblasted of the workpiece (4) to be sandblasted so as to sandblast the entire surface to be sandblasted.

2. The sandblasting fixture according to claim 1, characterized in that: Two second clamps (2) are provided, and the two second clamps (2) are respectively a first sub-clamp and a second sub-clamp; when the first sub-clamp is stacked on the second sub-clamp, the pressing portion (22) on the first sub-clamp corresponds to the hollow portion (21) on the second sub-clamp, and the hollow portion (21) on the first sub-clamp corresponds to the pressing portion (22) on the second sub-clamp.

3. The sandblasting fixture according to claim 1, characterized in that: The sandblasting fixture further comprises: A buffer member (3) is provided on the first fixture (1); a through hole (31) is provided on the buffer member (3); and the workpiece (4) to be sandblasted is positionally mounted in the through hole (31).

4. The sandblasting fixture according to claim 3, characterized in that: The depth of the through hole (31) is equal to the thickness of the workpiece (4) to be sandblasted.

5. The sandblasting fixture according to claim 3, characterized in that: The buffer member (3) is provided with a plurality of through holes (31) arranged at intervals, one of the workpieces to be sandblasted (4) is limitedly installed in one of the through holes (31), and when the second clamp (2) is covered on the first clamp (1), the hollow portion (21) is communicated with the through hole (31).

6. The sandblasting fixture according to claim 3, characterized in that: The outline size of the through hole (31) is smaller than the outline size of the workpiece (4) to be sandblasted.

7. The sandblasting fixture according to any one of claims 1 to 6, characterized in that: The second clamp (2) is made of polymer material.

8. The sandblasting fixture according to any one of claims 1 to 6, characterized in that: One of the first clamp (1) and the second clamp (2) is provided with a protrusion (11), and the other is provided with a groove (23), and the protrusion (11) is connected to the groove (23) by snapping.

9. The sandblasting fixture according to any one of claims 1 to 6, characterized in that: The sandblasting fixture further comprises: A fixing member (5), the fixing member (5) being used for detachably connecting the first clamp (1) and the second clamp (2).

10. The sandblasting fixture according to claim 9, characterized in that: The fixing member (5) comprises a bolt, the first clamp (1) is provided with a first mounting hole (12), the second clamp (2) is provided with a second mounting hole (24), and the bolt is used for threadedly fastening the aligned first mounting hole (12) and the second mounting hole (24).

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