A covering device and a workpiece local sand blasting device using the same

Abstract

The present application relates to sand blasting equipment technical field, particularly to a kind of covering device and the workpiece local sand blasting device using the covering device, including material belt, the material belt is sequentially provided with depression angle sand blasting module and elevation angle sand blasting module, the depression angle sand blasting module covers workpiece front and top local position, the elevation angle sand blasting mould covers workpiece back and lower side and bottom local position, by setting the mechanical structure of depression angle sand blasting module and elevation angle sand blasting module mutual cooperation to workpiece is carried out sand blasting treatment, can be on the same equipment, without changing the material belt posture and transport direction, can be from upper side and lower side to product multidirectional local sand blasting, realize accurate shielding and sand blasting, to reduce processing cost and time cost, improve efficiency.

Description

Technical Field

[0001] This invention relates to the field of sandblasting equipment technology, and in particular to a covering device and a workpiece local sandblasting device using the covering device. Background Technology

[0002] Sandblasting is a process that uses the impact of high-speed sand jets to clean and roughen the surface of a substrate. It uses compressed air as power to propel the abrasive material into a high-speed jet stream onto the surface to be treated, thereby achieving a certain degree of cleanliness and different roughness. During the sandblasting process, some workpieces require localized sandblasting due to certain process requirements, and the roughness of other areas cannot be changed except for the areas that need sandblasting.

[0003] In related technologies, when surface treatment of workpieces requiring localized sandblasting, a pretreatment method of applying a protective film is generally used. This involves covering the un-sandblasted areas of the workpiece surface with a protective film, ensuring that only the exposed parts of the workpiece are sandblasted during the sandblasting process. After sandblasting, the film needs to be removed. However, for a significant portion of workpieces requiring localized sandblasting, both the volume and the area to be sandblasted are relatively small. If a film is used for localized sandblasting, the application and removal of the film are difficult and costly, resulting in high time and economic costs for the company.

[0004] Therefore, a covering device and a workpiece local sandblasting device using the covering device are needed to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a covering device and a workpiece local sandblasting device using the covering device, so as to solve the problems of high difficulty and high cost in applying and removing the film when using a film to cover the workpiece for sandblasting in the prior art.

[0006] To achieve the above and other related objectives, the present invention provides a covering device, including a downward-angle covering module and an upward-angle covering module. The downward-angle covering module covers the front and top partial positions of the workpiece, and the upward-angle covering module covers the back, lower side and bottom partial positions of the workpiece.

[0007] In one embodiment of the present invention, the tilt-angle covering module includes a base, a base positioning post, a covering module, and a pressing module. The base positioning post is disposed inside the base. The base has an open-type receiving cavity with both the front and bottom openings on the side facing the pressing module. The pressing module is connected to the receiving cavity through the base positioning post. A positioning groove is provided on the end face of the pressing module near the base. The covering module is disposed between the pressing module and the base, and the positioning groove presses the covering module tightly.

[0008] In one embodiment of the present invention, the elevation angle coverage module includes a fixed base, an elevation angle shielding module and a cover plate. The fixed base has a shielding cavity with an open design at the front and bottom. The cover plate is connected to the fixed base by a fastener and covers the shielding cavity. The elevation angle coverage module is disposed between the cover plate and the fixed base.

[0009] A workpiece local sandblasting device employing the aforementioned covering device is characterized in that it includes a material strip, on which a downward-angle covering module and an upward-angle covering module are sequentially arranged.

[0010] In one embodiment of the present invention, the covering module includes a hanging plate, a shielding plate and a pressing plate arranged in sequence. The hanging plate, the shielding plate and the pressing plate are provided with mounting holes that match the positioning posts of the base. The hanging plate is attached to the base, and the top of the hanging plate is provided with a bend that is attached to the right-angled edge of the top of the base.

[0011] In one embodiment of the present invention, a first shield is provided at the top center of the shield plate. The first shield extends horizontally toward the pressing module. Two second shields are symmetrically provided on the shield plates on both sides of the first shield. The two second shields also extend horizontally toward the pressing module. There is a gap between the first shield and the two second shields. A vertically downward third shield is provided below the two second shields away from the edge of the first shield. The first shield, the second shield and the third shield are arranged in a U-shape.

[0012] In one embodiment of the present invention, a reinforcing rib is provided between the middle position of the first shield and the shielding plate, forming an angle between 30 and 45 degrees with the horizontal direction, and the two ends of the reinforcing rib extend to the first shield.

[0013] In one embodiment of the present invention, the elevation angle blocking module includes an elevation angle blocking plate and an elevation angle pressing plate arranged sequentially. The elevation angle blocking plate is fitted to the cover plate. Both the elevation angle blocking plate and the elevation angle pressing plate have through holes. The through holes match the size of the fixing parts on the cover plate. The fixing base has a locking groove on its side. Both the elevation angle blocking plate and the elevation angle pressing plate have locking protrusions on their sides that match the locking groove.

[0014] In one embodiment of the present invention, the upper end face of the elevation angle shielding plate and the upper end face of the elevation angle pressing plate are both provided with V-shaped sand-permeable grooves. Both sides of the V-shaped sand-permeable grooves on the elevation angle pressing plate are provided with receiving through holes. The size of the receiving through holes matches the size of the processed part. The cover plate is provided with a clearance groove. The height of the clearance groove is lower than the lowest end of the V-shaped sand-permeable groove.

[0015] In one embodiment of the present invention, each component of the coverage module and the elevation angle blocking module is manufactured by stamping process.

[0016] As described above, the covering device and the workpiece local sandblasting device using the covering device of the present invention have the following beneficial effects:

[0017] 1. By setting up a downward-angle sandblasting module and an upward-angle sandblasting module in a mechanical structure to work together to sandblast the workpiece, multi-directional local sandblasting can be performed on the product from the top and bottom without changing the posture and transport direction of the material belt on the same equipment. This achieves precise masking and sandblasting, thereby reducing processing costs and time costs and improving efficiency.

[0018] 2. By setting a bend at the top of the hanging plate that fits into the right-angled edge of the base, a stable plane is provided for the subsequently installed baffle and pressure plate. The first, second, and third baffles are arranged in a U-shape, semi-enclosing the workpiece in the center, thus shielding the parts of the workpiece that cannot be sandblasted. The strength of the first baffle can be improved by setting reinforcing ribs, reducing the possibility of deformation under high-speed, high-intensity sandblasting.

[0019] 3. Positioning ears are provided on both sides of the hanging plate, the shielding plate and the pressure plate in the horizontal direction. The positioning ears pass through the positioning groove on the pressure module, so as to realize quick installation and positioning. The side of the elevation shielding plate and the elevation pressure plate are provided with positioning protrusions that match the positioning groove, which facilitates installation and positioning.

[0020] 4. The V-shaped sand-penetrating groove set on the upper surface of the elevation angle baffle plate can maximize the cross-sectional area of ​​the groove while blocking the lower support of the workpiece. This ensures that the sand beam from the sandblasting gun can pass through the V-shaped sand-penetrating groove more fully to treat the workpiece. At the same time, it also gives the elevation angle baffle plate sufficient strength, reduces the bending of the elevation angle baffle plate, and makes the groove height lower than the lowest end of the V-shaped sand-penetrating groove, so that the cover plate is as far away from the path of the sand beam as possible, thereby reducing the wear of the cover plate and further saving costs. Attached Figure Description

[0021] Figure 1 The diagram shown is a schematic diagram of the top-angle covering module structure of a covering device and a workpiece local sandblasting device using the covering device disclosed in an embodiment of the present invention.

[0022] Figure 2 The image shown is an exploded view of a covering device and a workpiece local sandblasting device using the covering device, as disclosed in an embodiment of the present invention.

[0023] Figure 3 Displayed as Figure 2 A magnified view of the area marked A.

[0024] Figure 4The diagram shown is a schematic diagram of the elevation angle covering module structure of a covering device and a workpiece local sandblasting device using the covering device disclosed in an embodiment of the present invention.

[0025] Figure 5 The diagram shown is an exploded view of an elevation angle covering module of a covering device and a workpiece local sandblasting device using the covering device, as disclosed in an embodiment of the present invention.

[0026] Component designation explanation

[0027] 1-Base; 2-Base positioning post; 3-Cover module; 4-Pressure module; 5-Through hole; 6-Accommodation cavity; 7-Cover plate; 8-Fixing seat; 9-Elevation sandblasting module; 10-Shielding cavity; 11-Positioning groove; 12-Leaving groove; 301-Hanging plate; 302-Shielding plate; 303-Pressure piece; 304-Bending; 305-First shielding piece; 306-Second shielding piece; 307-Third shielding piece; 308-Reinforcing rib; 309-Positioning ear; 310-Positioning groove; 901-Elevation through hole; 902-Elevation shielding plate; 903-Elevation pressure piece; 904-Positioning protrusion; 905-V-shaped sand-penetrating groove; 906-Accommodation through hole. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0029] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0030] Please see Figures 1 to 3This invention provides a covering device and a workpiece local sandblasting device using the covering device. In a specific embodiment of the invention, during the construction of a production line, the workpiece to be sandblasted is placed on the working surface of a conveyor belt and transported by the conveyor belt. When the sandblasting gun needs to perform local sandblasting treatment on the downward angle of the workpiece, the downward angle sandblasting module is covered on the front and top of the workpiece by the corresponding equipment. The base 1 in the downward angle sandblasting module is fixedly connected to the equipment frame by the base positioning column 2. The covering module 3 and the pressure module 4 are provided with positioning holes corresponding to the base positioning column 2. The covering module 3 and the pressure module 4 are fixed by cooperating with the base positioning column 2 through the positioning holes. The base 1 has an open-design receiving cavity 6 on the side facing the pressure module 4. During the installation process, the pressure module 4 is partially pressed into the receiving cavity 6. The part of the pressure module 4 pressed into the receiving cavity 6 fits and abuts against the cavity wall of the receiving cavity 6, thereby achieving the positioning of the pressure module 4.

[0031] The covering module 3 includes a hanging plate 301, a shielding plate 302, and a pressing plate 303. All components of the covering module 3 are made by stamping, which can reduce production costs. Through holes 5 matching the size of the base positioning post 2 are opened in the middle of the hanging plate 301, the shielding plate 302, and the pressing plate 303. In order to make the hanging plate 301 fit tightly against the base 1, a bend 304 is provided on the top of the hanging plate 301 to fit the right angle side of the top end face of the base 1. Only when the hanging plate 301 fits tightly against the base 1 can it provide a stable plane for the shielding plate 302 and the pressing plate 303 installed later.

[0032] The baffle plate 302 is closely attached to the hanging plate 301. A first baffle plate 305 is set at the top center of the baffle plate 302, extending horizontally towards the pressing module 4. Two second baffle plates 306 are symmetrically arranged on the baffle plate 302 on both sides of the first baffle plate 305, also extending horizontally towards the pressing module 4. There is a gap between the first baffle plate 305 and the two second baffle plates 306, so that the part of the workpiece that needs to be sandblasted is exposed to the sand jet through the gap. A vertically downward third baffle plate 307 is set below each of the two second baffle plates 306 away from the side of the first baffle plate 305. The first baffle plate 305, the second baffle plate 306 and the third baffle plate 307 form a U-shape. The design partially surrounds the workpiece in the center, shielding the parts of the workpiece that cannot be sandblasted. A reinforcing rib 308 is set at an angle of 30-45 degrees to the horizontal direction between the middle position of the first shield 305 and the shield 302. The two ends of the reinforcing rib 308 extend to the first shield 305. The reinforcing rib 308 can improve the strength of the first shield 305 and reduce the possibility of deformation under high-speed and high-intensity sandblasting. At the same time, a groove is formed at the position where the two ends of the reinforcing rib 308 extend to the first shield 305. During sandblasting, some sand particles accumulate in the groove, blocking the sand particles that are subsequently sandblasted, reducing the wear and tear of the shield 302, and further reducing production costs.

[0033] Multiple pressure plates 303 can be set according to production needs. The combination of multiple pressure plates 303 will form a reinforcing part, thereby increasing the support area of ​​the baffle plate 302. Generally, two pressure plates 303 are set. By stacking two pressure plates 303, the thickness of the reinforcing part is increased. Under this design, the size requirement of the pressure plate 303 is small, and the longest size will not exceed 1 cm. Correspondingly, during the stamping process of the pressure plate 303, the larger the size of the pressure plate 303, the higher the stamping cost. Using two small-sized pressure plates 303 to work together can save some mold opening costs. Positioning ears 309 are extended horizontally on both sides of the hanging plate 301, the baffle plate 302 and the pressure plate 303. The positioning ears 309 pass through the positioning groove 310 on the pressing module 4, thereby enabling quick installation and positioning.

[0034] like Figures 4 to 5As shown, when the workpiece needs to be sandblasted at an upward angle, the upward angle sandblasting module 9 is covered on the back, lower side and bottom of the workpiece. The sandblasting gun sandblasts the bottom surface of the top of the workpiece at an upward angle. The upward angle sandblasting fixing seat 8 is installed on the corresponding equipment. The cover plate 7 is fixed to the fixing seat 8 by the fixing member and covers the fixing seat 8. The cover plate 7 covers the shielding cavity 10 inside the fixing seat 8. The upward angle sandblasting module 9 is set between the cover plate 7 and the fixing seat 8. The upward angle sandblasting module 9 is provided with an upward angle through hole 901 on each component. The fixing member passes through the upward angle through hole 901 to fix each component of the upward angle sandblasting module 9 in the fixed shielding cavity 10. The fixing seat 8 is provided with a locking groove 11 on the side. Inside the upward angle sandblasting module 9, the upward angle shielding plate 902 and the upward angle pressing plate 903 are both provided with locking protrusions 904 that match the locking groove 11, which facilitates installation and positioning.

[0035] Both the upper end face of the elevation angle baffle 902 and the upper end face of the elevation angle pressure plate 903 are provided with V-shaped sand-penetrating grooves 905. Both sides of the V-shaped sand-penetrating grooves 905 on the elevation angle pressure plate 903 are provided with receiving through holes 906. The size of the receiving through holes 906 matches the size of the workpiece. By providing V-shaped sand-penetrating grooves 905 on the upper end face of the elevation angle baffle 902, the cross-sectional area of ​​the through groove can be maximized while blocking the lower end support of the workpiece. This ensures that the sand beam of the sandblasting gun can pass through the V-shaped sand-penetrating grooves 905 more fully to process the workpiece. When the sandblasting gun sprays sand at an elevation angle from below at an angle to the lower side of the top of the workpiece, the diameter of the sand beam gradually expands after moving away from the sandblasting gun. Therefore, the V-shaped sand-penetrating grooves 905 maintain as much sand beam penetration as possible while also ensuring that the elevation angle baffle 902 itself has sufficient strength, reducing the bending 304 of the elevation angle baffle 902.

[0036] The elevation angle pressure plate 903 can be configured according to production needs. Taking two sets of elevation angle pressure plates 903 as an example, the outer contour of the two sets of elevation angle pressure plates 903 is similar to that of the elevation angle baffle plate 902. However, the V-shaped sand passage groove 905 on the elevation angle pressure plate 903 is provided with receiving through holes 906 on both sides. The size of the receiving through holes 906 matches the size of the processed part, so that the elevation angle pressure plate 903 provides sufficient support area and further reduces damage to the elevation angle baffle plate 902. The cover plate 7 is provided with a relief groove 12. The height of the relief groove 12 is lower than the lowest end of the V-shaped sand passage groove 905, so that the cover plate 7 is as far away from the path of the sand bundle as possible, thereby reducing the wear of the cover plate 7 and further saving costs.

[0037] In summary, this invention utilizes a combination of a downward-angle sandblasting module and an upward-angle sandblasting module in a mechanical structure to perform sandblasting on workpieces. This allows for multi-directional, localized sandblasting of products from both above and below on the same equipment, without altering the conveyor belt's posture or transport direction. This achieves precise masking and sandblasting, thereby reducing processing and time costs and improving efficiency. The bending at the top of the mounting plate, which aligns with the right-angle edge of the base, provides a stable plane for the subsequently installed shielding plate and pressure plate. The first, second, and third shielding plates are arranged in a U-shape, semi-enclosing the workpiece in the center, effectively masking the non-sandblastable parts. Reinforcing ribs enhance the strength of the first shielding plate, reducing deformation under high-speed, high-intensity sandblasting. The invention addresses the possibility of rapid installation and positioning by providing positioning ears extending horizontally on both sides of the hanging plate, shield, and pressure plate. These positioning ears pass through positioning grooves on the pressure module. The angle shield and the angle pressure plate both have matching locking protrusions on their sides, facilitating installation and positioning. A V-shaped sand-penetrating groove on the upper surface of the angle shield protects the lower support of the workpiece while maximizing the cross-sectional area of ​​the groove. This ensures the sand jet from the sandblasting gun can pass through the V-shaped groove more effectively to process the workpiece. Simultaneously, it provides sufficient strength to the angle shield, reducing bending. The groove height is lower than the lowest point of the V-shaped sand-penetrating groove, keeping the cover plate as far away from the sand jet path as possible, thus reducing cover plate wear and further saving costs. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial applicability.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A covering device, characterized in that The cover module comprises a base, a base positioning column, a cover module and a pressing module. The base positioning column is fixedly arranged in the base, and the side of the base facing the pressing module is provided with a receiving cavity with an open design at the front and bottom. The cover module is clamped between the pressing module and the base, and the positioning groove presses the cover module to fix the position of the cover module.

2. The covering device of claim 1, wherein, The cover module comprises a hanging plate, a shielding plate and a pressing plate which are sequentially stacked.

3. The covering of claim 1, wherein, The cover module and the cover module are made of stamping process.

4. The covering of claim 3, wherein, The cover module and the cover module are made of stamping process.

5. A workpiece local sandblasting device employing the covering device according to any one of claims 1 to 4, characterized in that, ​ 6. The workpiece local sandblasting device of claim 5, wherein, ​

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