A spray masking device and spraying equipment

Abstract

This utility model relates to a spraying masking device and a spraying equipment. The spraying masking device includes a bottom mold assembly, a top mold assembly, a first drive assembly, and a second drive assembly. The bottom mold assembly is used to support and position the workpiece; the top mold assembly is disposed on the upper side of the bottom mold assembly and includes at least two masking top molds, each capable of masking different areas of the workpiece; the first drive assembly drives the bottom mold assembly and the top mold assembly to move relative to each other in a horizontal plane, so that the different masking top molds can be positioned above the workpiece respectively; the second drive assembly drives the bottom mold assembly and the top mold assembly to move relative to each other in a vertical direction, so that the masking top mold positioned above the workpiece covers the workpiece. The cooperation of the first drive assembly and the second drive assembly drives the top mold assembly and the bottom mold assembly, automatically completing the masking of different areas of the workpiece by different masking top molds, so that a baking is performed after each area to be sprayed, thereby improving work efficiency and spraying quality.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, and in particular to a spraying masking device and a spraying equipment. Background Technology

[0002] With the maturation of magnesium alloy forming technology and equipment, its application fields are constantly expanding. In practical applications, magnesium alloy workpieces are usually clearly distinguished by different colors for different functional areas, making it convenient for users to identify and operate, thereby improving the efficiency of workpiece operation and the workpiece's competitiveness in the market.

[0003] When performing multi-color spraying on a workpiece, it is necessary to precisely control the spraying boundaries of different colors. Even slight deviations can cause color mixing and affect the overall effect. Therefore, the process of multi-color spraying on a workpiece in related technologies is roughly as follows: Figure 1 The workpiece shown is illustrated, where A, B, and C represent three different areas to be painted, each requiring a different color of paint. During the painting process, areas B and C are typically masked manually first, then paint is applied to area A, followed by baking. Next, areas A and C are masked manually, then paint is applied to area B, and the workpiece is baked again. Finally, areas A and B are masked manually, then paint is applied to area C, and the workpiece is baked again. This method has several drawbacks. First, masking different areas of the workpiece requires repeated manual operation, making the painting process cumbersome and inefficient. Second, the multiple baking cycles required for the first paint application can easily lead to poor adhesion, peeling, and other quality defects.

[0004] Therefore, there is an urgent need for a spraying masking device and spraying equipment to solve the above-mentioned technical problems. Utility Model Content

[0005] One objective of this invention is to provide a spraying masking device that can automatically and precisely mask different areas of a workpiece to be sprayed in sequence, so that the workpiece can be baked together after multiple paints are applied, thereby improving the convenience, efficiency and quality of spraying.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a spraying masking device, including: a bottom mold assembly, a top mold assembly, a first drive assembly, and a second drive assembly.

[0008] The bottom mold assembly is used to support and position the workpiece; the top mold assembly is disposed on the upper side of the bottom mold assembly and includes at least two covering top molds, which can cover different areas of the workpiece; the first drive assembly is used to drive the bottom mold assembly and the top mold assembly to move relative to each other in the horizontal plane so that the different covering top molds can be respectively positioned above the workpiece; the second drive assembly is used to drive the bottom mold assembly and the top mold assembly to move relative to each other in the vertical direction so that the covering top mold positioned above the workpiece covers the workpiece.

[0009] As an optional solution, the output end of the first driving component is connected to the top mold component to drive the top mold component to move in the horizontal plane so that the different covering top molds are respectively located above the workpiece; the output end of the second driving component is connected to the bottom mold component to drive the bottom mold component to move in the vertical direction so that the workpiece placed on the bottom mold component and the top mold component can cooperate and separate.

[0010] As an optional embodiment, the first driving assembly includes a rotary driving source, with at least two of the aforementioned covering top molds arranged circumferentially. The rotary driving source drives the at least two of the aforementioned covering top molds to rotate about a vertical axis and respectively above the workpiece. In other embodiments, the first driving assembly includes a linear driving source, which drives the at least two of the aforementioned covering top molds to move horizontally to above the workpiece.

[0011] As an optional solution, the first driving component further includes: a support member extending vertically and having its lower end connected to the output end of the rotary driving source; at least two connecting arms, one end of each connecting arm being connected to the upper end of the support member, and the other end being connected to one of the covering top molds.

[0012] As an optional solution, the top mold assembly is detachably connected to the output end of the first drive assembly; the bottom mold assembly is detachably connected to the output end of the second drive assembly.

[0013] As an alternative, the workpiece has a mating feature on its upper side and the top mold assembly has a positioning feature on its lower side. The positioning feature and the mating feature are in a concave-convex fit so that the top mold assembly covers the workpiece.

[0014] As an optional solution, the aforementioned mating feature is a groove, and the aforementioned positioning feature includes a first protrusion and a second protrusion. The first protrusion and the aforementioned groove are inserted into each other, and the second protrusion and the aforementioned groove are inserted into each other. The height of the first protrusion is higher than the height of the second protrusion, and the mating gap between the first protrusion and the aforementioned groove is greater than the mating gap between the second protrusion and the aforementioned groove.

[0015] As an optional solution, the bottom mold assembly includes: a support connected to the output end of the first drive assembly or the output end of the second drive assembly; a bottom mold module mounted on the support and used for positioning and supporting the workpiece; a second drive source mounted on the support; and a workpiece ejection component connected to the output end of the second drive source, wherein the second drive source can drive the workpiece ejection component to move up and down to eject the workpiece from the bottom mold module.

[0016] As an optional solution, the bottom mold module includes a fixture base and a cover bottom mold. The fixture base is mounted on the support, and the cover bottom mold is detachably mounted on the upper side of the fixture base. The cover bottom mold and the lower surface of the workpiece are in a concave-convex fit.

[0017] Another objective of this invention is to provide a spraying device that automatically completes multi-color spraying of workpieces, reducing manual operation and saving labor costs.

[0018] To achieve this objective, the present invention adopts the following technical solution:

[0019] This utility model provides a spraying device, including a spraying apparatus and the aforementioned spraying masking device. The spraying apparatus is used to spray the workpiece on the spraying masking device.

[0020] The beneficial effects of this utility model are:

[0021] In practical use, the spraying masking device of this utility model supports the workpiece on the bottom mold assembly. The first drive assembly drives the top mold assembly or the bottom mold assembly to move in the horizontal plane, so that one of the masking top molds is positioned above the workpiece. Then, the second drive assembly drives the top mold assembly or the bottom mold assembly to move in the vertical direction, so that the masking top mold covers the workpiece. Under the cover of the masking top mold, the first area of ​​the workpiece to be sprayed is exposed, so that the first area to be sprayed can be accurately sprayed. Then, the second drive assembly drives the masking top mold to separate from the workpiece, and the first drive assembly moves to position the next masking top mold above the workpiece. This process is repeated so that different masking top molds successively cover different areas of the workpiece, so that different areas of the workpiece to be sprayed are exposed, which facilitates spraying different colors on different areas to be sprayed. When all areas of the workpiece to be sprayed have been completed, the workpiece can be removed and baked with multiple paints at the same time. With the cooperation of the first and second drive components, different masking top molds can be used to cover the workpieces in sequence automatically without manual operation, saving manpower. After the workpieces are sprayed with different colors, they are baked once, reducing the number of baking times and avoiding quality defects such as poor adhesion and peeling of paint after multiple baking processes, thus improving work efficiency and spraying quality.

[0022] This invention relates to a spraying equipment that uses a spray masking device to cover the workpiece, exposing different areas on the workpiece to be sprayed. The spraying device then adjusts the paint to the corresponding color according to the color requirements of the areas to be sprayed, and then sprays different colors onto the exposed areas of the workpiece. Through the coordinated operation of the spray masking device and the spraying device, multi-color spraying of the workpiece is automatically completed. This reduces manual operation and saves labor costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the workpiece to be coated;

[0025] Figure 2 This is a schematic diagram of the structure of the spraying masking device provided in a specific embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the top mold assembly and the first drive assembly provided in a specific embodiment of the present invention from a first perspective;

[0027] Figure 4 This is a schematic diagram of the top mold assembly and the first drive assembly provided in a specific embodiment of the present invention from a second perspective;

[0028] Figure 5 This is a schematic diagram of the bottom mold assembly and the workpiece provided in a specific embodiment of this utility model;

[0029] Figure label:

[0030] 1. Bottom mold assembly; 11. Support; 12. Second drive source; 13. Workpiece ejection component; 131. Connector; 132. Ejector rod; 14. Bottom mold module; 141. Fixture base frame; 1411. First clearance notch; 142. Covering bottom mold; 1421. Second clearance notch;

[0031] 2. Top mold assembly; 21. Covering top mold; 22. Top mold body; 23. Positioning features; 231. First protrusion; 232. Second protrusion;

[0032] 3. First drive assembly; 31. Rotary drive source; 32. Support component; 33. Connecting arm;

[0033] 4. Second drive component; 41. First drive source; 42. Mounting component;

[0034] 5. Workpiece; 51. Groove;

[0035] 6. Frame; 61. Base assembly; 611. First support column; 612. First support plate; 62. Second support column; 63. Second support plate. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] This utility model provides a spraying device, including a spraying unit and a spraying masking unit. The spraying masking unit automatically masks the workpiece 5, and the spraying unit sprays paint onto the workpiece 5 on the spraying masking unit. By masking the workpiece 5 with the spraying masking unit, different areas on the workpiece 5 to be sprayed are exposed. The spraying unit is equipped with paint of different colors, and can change the paint to the corresponding color according to the color requirements of the areas to be sprayed on the workpiece 5, and then spray the exposed areas on the workpiece 5 with different colors. Through the coordinated operation of the spraying masking unit and the spraying unit, multi-color spraying of the workpiece 5 is automatically completed. This reduces manual operation and saves labor costs.

[0042] like Figure 2 As shown, this utility model provides a spraying masking device, which includes a frame 6, a bottom mold assembly 1, a top mold assembly 2, a first drive assembly 3, and a second drive assembly 4. Both the first drive assembly 3 and the second drive assembly 4 are mounted on the frame 6. The bottom mold assembly 1 is used to support and position the workpiece 5. The top mold assembly 2 is disposed above the bottom mold assembly 1 and includes at least two masking top molds 21, with different masking top molds 21 used to mask different areas of the workpiece 5. The first drive assembly 3 drives the bottom mold assembly 1 and the top mold assembly 2 to move relative to each other in a horizontal plane, so that the different masking top molds 21 can be positioned above the workpiece 5 respectively. The second drive assembly 4 drives the bottom mold assembly 1 and the top mold assembly 2 to move relative to each other in a vertical direction, so that the masking top mold 21 positioned above the workpiece 5 covers the workpiece 5.

[0043] In this embodiment, the spraying masking device drives the bottom mold assembly 1 or the top mold assembly 2 to move horizontally in the first driving assembly 3, so that the first masking top mold 21 is placed on the workpiece 5 above the bottom mold assembly 1. The second driving assembly 4 drives the bottom mold assembly 1 or the top mold assembly 2 to move vertically, completing the engagement of the first masking top mold 21 and the workpiece 5. At this time, paint can be sprayed on the uncovered areas of the workpiece 5. Then, the second driving assembly 4 drives the bottom mold assembly 1 or the top mold assembly 2 to move vertically, completing the separation of the first masking top mold 21 and the workpiece 5. The above operation is repeated. Through the coordinated drive of the first driving assembly 3 and the second driving assembly 4, different masking top molds 21 automatically cover different areas of the workpiece 5, reducing manual operation and saving manpower. After the workpiece 5 is sprayed with different colors, it is baked once, reducing the number of baking times and avoiding quality defects such as poor adhesion and peeling of paint due to multiple baking, thus improving work efficiency and spraying quality.

[0044] Optionally, the uneven surface of the upper surface of the bottom mold assembly 1 matches the uneven surface of the lower surface of the workpiece 5, and the upper surface of the bottom mold assembly 1 and the workpiece 5 are in a concave-convex fit, so that the bottom mold assembly 1 can accurately position the workpiece 5 and stably and reliably support the workpiece 5. It is understood that in some cases, in order to ensure the stability of the position of the workpiece 5 during the spraying process, the workpiece 5 can also be locked to the bottom mold assembly 1 by fasteners such as pins and screws.

[0045] like Figure 1 As shown, there are three areas to be sprayed on the workpiece 5, namely areas A, B, and C. Areas A and B are the upper side areas of the workpiece 5, and area C is the side surface of the workpiece 5. Specifically, area A includes two areas on the workpiece 5, and area B includes three areas on the upper surface of the workpiece 5. In this embodiment, as... Figure 3 and Figure 4 As shown, the top mold assembly 2 includes three covering top molds 21. The three covering top molds 21 have the same outer contour and are identical to the outer contour of the upper side of the workpiece 5, thus allowing all three covering top molds 21 to fit well with the workpiece 5. Specifically, the first covering top mold 21 has a hollow area a, which corresponds to area A of the workpiece 5. When the first covering top mold 21 is placed on the workpiece 5, area A of the workpiece 5 is exposed through the hollow area a. The second covering top mold 21 has a hollow area b, which corresponds to area B of the workpiece 5. When the second covering top mold 21 is placed on the workpiece 5, area B of the workpiece 5 is exposed through the hollow area b. When the third covering top mold 21 is placed on the workpiece 5, area C of the workpiece 5 is exposed, while the area on the upper surface of the workpiece 5 adjacent to area C is covered. In summary, different masking molds 21 expose different areas to be painted while ensuring that the area near the area to be painted is covered, preventing paint from splashing onto the adjacent area of ​​the workpiece 5. Furthermore, it should be noted that since areas A and B in this embodiment are the sidewalls of holes formed in the workpiece 5, when area A is painted and the second masking mold 21 is placed on the workpiece 5, the masking mold 21 will not contact area A, thus preventing paint scratches at area A. Of course, in some embodiments, the relative vertical lifting distance between the top mold assembly 2 and the bottom mold assembly 1 can be controlled to ensure that when the masking mold 21 is placed on the workpiece 5, there is a certain gap between the area to be painted on the workpiece 5 and the lower surface of the masking mold 21, thereby ensuring that the paint painted on the previous area is not scratched by the subsequent masking mold 21.

[0046] In some embodiments (not shown), the first driving component 3 is used to drive the bottom mold component 1 to move or rotate in the horizontal plane so that different covering top molds 21 can be positioned above the workpiece 5 respectively. The second driving component 4 is used to drive the bottom mold component 1 to move in the vertical direction so that the covering top mold 21 positioned above the workpiece 5 covers the workpiece 5.

[0047] In some embodiments (not shown), the first driving component 3 is used to drive the bottom mold component 1 to move or rotate in the horizontal plane so that different covering top molds 21 can be positioned above the workpiece 5 respectively. The second driving component 4 is used to drive the top mold component 2 to move in the vertical direction so that the covering top mold 21 positioned above the workpiece 5 covers the workpiece 5.

[0048] In some embodiments (not shown), the first driving component 3 is used to drive the top mold component 2 to move or rotate in the horizontal plane so that different covering top molds 21 can be positioned above the workpiece 5 respectively. The second driving component 4 is used to drive the top mold component 2 to move in the vertical direction so that the covering top mold 21 positioned above the workpiece 5 covers the workpiece 5.

[0049] In this embodiment, as Figure 2 As shown, the output end of the first drive component 3 is connected to the top mold component 2, and is used to drive the top mold component 2 to move in the horizontal plane so that different masking top molds 21 are respectively positioned above the workpiece 5. The output end of the second drive component 4 is connected to the bottom mold component 1, and is used to drive the bottom mold component 1 to move in the vertical direction so that the workpiece 5 placed on the bottom mold component 1 and the top mold component 2 can engage and disengage. By having each drive mechanism drive one component to move, the overall connection structure of the spray masking device is simplified.

[0050] In this embodiment, as Figure 2As shown, the frame 6 includes a base assembly 61, which includes a first support column 611 and a first support plate 612. The first support plate 612 is fixed to the first support column 611, and the second drive assembly 4 is mounted on the first support plate 612. Multiple first support columns 611 can be present to reliably support the first support plate 612. Optionally, four first support columns 611 of the same height are distributed at different positions on the first support plate 612 to support the first support plate 612, the second drive assembly 4 on the first support plate 612, and the bottom mold assembly 1, ensuring the stability of the device during movement or operation. The frame 6 also includes a second support column 62 and a second support plate 63. The first drive assembly 3 is mounted on the second support plate 63, and the second support column 62 is supported below the second support plate 63. The second support column 62 is used to raise the first drive assembly 3, thereby raising the top mold assembly 2, allowing the top mold assembly 2 to be placed on top of the workpiece 5. Optionally, four second pillars 62 are provided, located at the four positions of the second support plate 63, to stably support the second support plate 63 and the first drive assembly 3 and the top mold assembly 2 on the second support plate 63. In this embodiment, the second pillars 62 are mounted on the base assembly 61, thereby making the spray masking device a whole, which helps to ensure the positional accuracy of the first drive assembly 3 and the second drive assembly 4, and thus ensures the positional accuracy of the top mold assembly 2 driven by the first drive assembly 3 and the bottom mold assembly 1 driven by the second drive assembly 4. In other embodiments, the second pillars 62 can also be configured to be supported on the ground.

[0051] In this embodiment, the first driving assembly 3 includes a rotary driving source 31, and at least two masking top molds 21 are arranged on a circumference with their centers located on the output shaft of the rotary driving source 31. The rotary driving source 31 drives the at least two masking top molds 21 to rotate around a vertical axis and above the workpiece 5. The first driving assembly 3 drives the top mold assembly 2 to rotate, and the arrangement of the at least two masking top molds 21 along the circumference makes the structure of the entire spraying masking device more compact.

[0052] The general working process of the spray masking device in this embodiment is as follows: First, the workpiece 5 is placed on the bottom mold assembly 1 and fixed. The first drive assembly 3 drives the top mold assembly 2 to rotate, rotating the masking top mold 21 with the hollow area a directly above the workpiece 5. The second drive assembly 4 drives the bottom mold assembly 1 to move upward so that the workpiece 5 on the bottom mold assembly 1 aligns with the masking top mold 21, exposing the area A to be operated on the workpiece 5 for paint spraying. After the area A is sprayed, the second drive assembly 4 drives the bottom mold assembly 1 to move downward so that the workpiece 5 on the bottom mold assembly 1 separates from the masking top mold 21. The first drive assembly 3 drives the top mold assembly 2 to rotate, rotating the masking top mold 21 with the hollow area b directly above the workpiece 5. Then, the second drive assembly 4 drives the bottom mold assembly 1 to move upward. The workpiece 5 on the bottom mold assembly 1 is aligned with the top masking mold 21, exposing the area B to be operated on the workpiece 5 for paint spraying. After the area B is painted, the second drive assembly 4 drives the bottom mold assembly 1 to move downward, separating the workpiece 5 on the bottom mold assembly 1 from the top masking mold 21. The first drive assembly 3 drives the top mold assembly 2 to rotate, rotating the top masking mold 21 corresponding to the area C to be operated on to directly above the workpiece 5. Then, the second drive assembly 4 drives the bottom mold assembly 1 to move upward, aligning the workpiece 5 on the bottom mold assembly 1 with the top masking mold 21, exposing the area C to be operated on the workpiece 5 for paint spraying. After the area C is painted, the second drive assembly 4 drives the bottom mold assembly 1 to move downward, separating the workpiece 5 on the bottom mold assembly 1 from the top masking mold 21.

[0053] In this embodiment, the rotary drive source 31 can be a servo motor, stepper motor, or other device capable of rotational output and precise angle control. Figure 3 and Figure 4As shown, the first driving assembly 3 also includes a support member 32 and connecting arms 33. The support member 32 extends vertically and its lower end is connected to the output end of the rotary driving source 31. There are at least two connecting arms 33, one end of which is connected to the upper end of the support member 32, and the other end is connected to a top-covering mold 21. It can be understood that the vertical extension of the support member 32 is to ensure that the top-covering mold 21 connected to the connecting arm 33 is higher than the bottom mold assembly 1, thus avoiding interference between the top-covering mold 21 and the bottom mold assembly 1 or the workpiece 5 when the top-covering mold 21 rotates. In this embodiment, three connecting arms 33 are provided, each connected to a top-covering mold 21. The three connecting arms 33 are evenly distributed circumferentially, so that the rotary driving source 31 is subjected to balanced forces circumferentially, reducing fatigue or damage to the device caused by unbalanced forces. Among them, the multiple connecting arms 33 are of the same size, ensuring that the top-covering molds 21 are in the same plane, so that the second driving assembly 3 has the same amount of movement when driving the workpiece 5 to dock with different top-covering molds 21, which facilitates setup and operation. In this embodiment, the connecting arm 33 includes a horizontal portion and a vertical portion, both of which have a certain length. One end of the horizontal portion is connected to the support member 32, and the other end is connected to the upper end of the vertical portion. The horizontal portion is designed to prevent interference between the top mold 21 and other top molds 21 or support members 32 during installation or operation. The lower end of the vertical portion is connected to the top mold 21. The vertical portion provides sufficient space on the top mold 21 for easy paint spraying.

[0054] In other embodiments (not shown), the first driving component 3 may also be configured to include a linear driving source, which is used to drive at least two covering top molds 21 to move horizontally above the workpiece 5 respectively.

[0055] In this embodiment, as Figure 2 As shown, the second drive assembly 4 includes a first drive source 41 and a mounting component 42. The first drive source 41 is mounted on the base assembly 61 and can output linear motion in the vertical direction. The mounting component 42 is connected to the output end of the first drive source 41, and the bottom mold assembly 1 is connected to the mounting component 42. By setting the mounting component 42 at the output end of the first drive source 41, the connection between the entire second drive assembly 4 and the bottom mold assembly 1 is facilitated. Specifically, the first drive source 41 can be an existing component capable of outputting vertical motion, such as a cylinder, hydraulic cylinder, electric cylinder, or linear motor. In this embodiment, the first drive source 41 is a cylinder, and four cylinders are provided. The four cylinders are distributed in different positions on the mounting component 42, which simultaneously drive the mounting component 42 and the bottom mold assembly 1 to rise and fall, while also ensuring the stability of the support for the workpiece 5 on the bottom mold assembly 1 and the bottom mold assembly 1.

[0056] In some embodiments, the top mold assembly 2 is detachably connected to the output end of the first drive assembly 3; the bottom mold assembly 1 is detachably connected to the output end of the second drive assembly 4. It is understood that when a different workpiece 5 is replaced, the top mold assembly 2 and the bottom mold assembly 1 also need to be replaced with top mold 2 and bottom mold assembly 1 corresponding to the new workpiece 5. The covering top mold 21 can be directly detached from the connecting arm 33 and replaced with a covering top mold 21 corresponding to the new workpiece 5; the bottom mold assembly 1 can be detached from the mounting part 42 connected to it and replaced with a bottom mold assembly 1 corresponding to the new workpiece 5. The detachable connection between the bottom mold assembly 1 and the connecting arm 33 can be a threaded connection, a snap-fit ​​connection, etc., and the detachable connection between the top mold assembly 2 and the output end of the second drive assembly 4 (i.e., the mounting part 42) can be a fastener connection, a snap-fit ​​connection, etc.

[0057] like Figure 4 and Figure 5 As shown, a mating feature is provided on the upper side of the workpiece 5, and a positioning feature 23 is provided on the lower side of the top mold assembly 2. The positioning feature 23 and the mating feature are engaged in a concave-convex fit so that the top mold assembly 2 covers the workpiece 5. Through the concave-convex fit between the mating feature and the positioning feature 23, it is possible to ensure that the top mold assembly 2 is accurately aligned with the workpiece 5, ensuring the accuracy of the area of ​​the workpiece 5 exposed to be sprayed, and thus ensuring the accuracy of the spraying position.

[0058] like Figure 4 and Figure 5As shown, the mating feature on workpiece 5 is an existing structure of workpiece 5 itself. In this embodiment, the mating feature is a groove 51. The top mold assembly 2 includes a top mold body 22, which is connected to the connecting arm 33. A positioning feature 23 is disposed on the lower side of the top mold body 22. In this embodiment, the positioning feature 23 includes a first protrusion 231 and a second protrusion 232. The first protrusion 231 can be inserted into the groove 51, and the second protrusion 232 can also be inserted into the groove 51. Wherein, the height of the first protrusion 231 is higher than the height of the second protrusion 232, and the mating clearance between the first protrusion 231 and the groove 51 is greater than the mating clearance between the second protrusion 232 and the groove 51. During the engagement of workpiece 5 and masking mold 21, the first protrusion 231, being higher, contacts workpiece 5 first. The larger clearance between the first protrusion 231 and the groove 51 facilitates its insertion into the groove 51, providing rough positioning of the relative positions of workpiece 5 and masking mold 21. As the first protrusion 231 continues to be inserted into the groove 51, the engagement between it and the groove 51 acts as a guide. During this process, the lower second protrusion 232 contacts workpiece 5. Due to the smaller clearance between the second protrusion 232 and the groove 51, it allows for precise positioning of workpiece 5 and masking mold 21, ensuring that the area to be operated on workpiece 5 is accurately exposed after engagement. This precise engagement of workpiece 5 and masking mold 21 results in a clear spraying boundary during the painting process.

[0059] In this embodiment, a rectangular groove 51 is provided on the workpiece 5. The first protrusion 231 and the second protrusion 232 each include two "L"-shaped parts. The two "L"-shaped parts of the first protrusion 231 are arranged diagonally, and the two "L"-shaped parts of the second protrusion 232 are also arranged diagonally, that is, the two "L"-shaped parts of the first protrusion 231 and the two "L"-shaped parts of the second protrusion 232 correspond to the four corners of the rectangular groove 51.

[0060] like Figure 5 As shown, the bottom mold assembly 1 includes a support 11, a bottom mold module 14, a second drive source 12, and a workpiece ejection component 13. The support 11 is connected to the output end of the first drive assembly 3 or the output end of the second drive assembly 4; the bottom mold module 14 is mounted on the support 11 and is used to position and support the workpiece 5; the second drive source 12 is mounted on the support 11; the workpiece ejection component 13 is connected to the output end of the second drive source 12, and the second drive source 12 can drive the workpiece ejection component 13 to move up and down to eject the workpiece 5 from the bottom mold module 14. When the workpiece 5 is removed, the second drive source 12 drives the workpiece ejection component 13 connected to the output end of the second drive source 12 to move upward. The workpiece ejection component 13 contacts and pushes the workpiece 5 away from the bottom mold module 14, thereby avoiding contact with or scratching of the painted paint during the removal of the workpiece 5 fixed on the bottom mold module 14, and improving the pass rate of the painted workpiece 5.

[0061] Optionally, the contact area between the workpiece ejection component 13 and the workpiece 5 can be a sufficiently large surface or at least three contact points, thereby ensuring that the workpiece 5 is stably supported during the ejection process. In this embodiment, the workpiece ejection component 13 includes a connector 131 and four push rods 132. The connector 131 is connected to the output end of the second drive source 12, and the four push rods 132 are all connected to the connector 131 for contacting the workpiece 5 respectively. Specifically, the connector 131 is X-shaped, and the four push rods 132 are connected to the four corners of the connector 131. Optionally, the second drive source 12 can be a cylinder, hydraulic cylinder, electric cylinder, motor, or other device capable of outputting vertical movement with precision.

[0062] Optional, such as Figure 5 As shown, the bottom mold module 14 includes a fixture base 141 and a cover mold 142. The fixture base 141 is mounted on the support 11, and the cover mold 142 is detachably mounted on the upper side of the fixture base 141. The cover mold 142 and the lower surface of the workpiece 5 are in a concave-convex fit. By setting the concave-convex state of the upper surface of the bottom mold assembly 1 to match the concave-convex state of the lower surface of the workpiece 5, reliable positioning of the workpiece 5 is ensured. Setting the bottom mold module 14 into two parts, the fixture base 141 and the cover mold 142, facilitates the processing of the bottom mold module 14 and the fixing of the bottom mold module 14 to the support 11.

[0063] Optionally, in this embodiment, the second driving source 12 is disposed on the lower side of the fixture base 141, the workpiece ejection component 13 is at least partially disposed on the upper side of the bottom mold module 14, and the fixture base 141 is provided with a first clearance notch 1411. The first clearance notch 1411 is used to avoid the workpiece ejection component 13 or the second driving source 12, so as to ensure that the workpiece ejection component 13 can be connected to the second driving source 12.

[0064] After the cover mold 142 is installed on the fixture base 141, a certain space is formed between the two, which is used to accommodate the workpiece ejection component 13 and to avoid the movement of the workpiece ejection component 13.

[0065] The bottom mold 142 is provided with a second clearance notch 1421. The second clearance notch 1421 is used to avoid part of the movement of the push rod 132 of the workpiece ejection component 13, so as to ensure that the push rod 132 of the workpiece ejection component 13 can contact the workpiece 5, and thus the workpiece 5 can be ejected smoothly.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A spray masking device, characterized in that, include: Bottom mold assembly (1), the bottom mold assembly (1) is used to support and position the workpiece (5); The top mold assembly (2) is disposed on the upper side of the bottom mold assembly (1). The top mold assembly (2) includes at least two covering top molds (21), and different covering top molds (21) can cover different areas of the workpiece (5). The first driving component (3) is used to drive the bottom mold component (1) and the top mold component (2) to move relative to each other in the horizontal plane so that the different covering top molds (21) can be located above the workpiece (5) respectively. The second driving component (4) is used to drive the bottom mold component (1) and the top mold component (2) to move relative to each other in the vertical direction so that the covering top mold (21) located above the workpiece (5) covers the workpiece (5).

2. The spray masking device according to claim 1, characterized in that, The output end of the first driving component (3) is connected to the top mold component (2) and is used to drive the top mold component (2) to move in the horizontal plane so that the different covering top molds (21) are respectively located above the workpiece (5); The output end of the second driving component (4) is connected to the bottom mold component (1) and is used to drive the bottom mold component (1) to move in the vertical direction so that the workpiece (5) placed on the bottom mold component (1) and the top mold component (2) can cooperate and separate.

3. A spray masking device according to claim 2, characterized in that, The first driving assembly (3) includes a rotary driving source (31), and at least two of the covering top molds (21) are arranged in a circular pattern. The rotary driving source (31) is used to drive at least two of the covering top molds (21) to rotate around a vertical axis to above the workpiece (5); or The first driving component (3) includes a linear driving source for driving at least two of the covering top molds (21) to move horizontally above the workpiece (5).

4. A spray masking device according to claim 3, characterized in that, The first driving component (3) further includes: The support member (32) extends vertically and its lower end is connected to the output end of the rotary drive source (31); At least two connecting arms (33), one end of each connecting arm (33) is connected to the upper end of the support (32), and the other end is connected to a corresponding top cover mold (21).

5. A spray masking device according to claim 2, characterized in that, The top mold assembly (2) is detachably connected to the output end of the first drive assembly (3); the bottom mold assembly (1) is detachably connected to the output end of the second drive assembly (4).

6. A spray masking device according to any one of claims 1-4, characterized in that, The workpiece (5) is provided with a mating feature, and the top mold assembly (2) is provided with a positioning feature (23). The positioning feature (23) and the mating feature are in concave-convex fit, so that the top mold assembly (2) covers the workpiece (5).

7. A spray masking device according to claim 6, characterized in that, The mating feature is a groove (51), and the positioning feature (23) includes a first protrusion (231) and a second protrusion (232). The first protrusion (231) and the groove (51) are inserted into each other, and the second protrusion (232) and the groove (51) are inserted into each other; wherein: The height of the first protrusion (231) is higher than the height of the second protrusion (232), and the fitting gap between the first protrusion (231) and the groove (51) is greater than the fitting gap between the second protrusion (232) and the groove (51).

8. A spray masking device according to any one of claims 1-4, characterized in that, The bottom mold assembly (1) includes: Support (11), the support (11) is connected to the output end of the first drive component (3) or the output end of the second drive component (4); Bottom mold module (14), which is installed on the support (11) and is used to position and support the workpiece (5); A second drive source (12) is mounted on the support (11); The workpiece ejection component (13) is connected to the output end of the second drive source (12). The second drive source (12) can drive the workpiece ejection component (13) to move up and down so as to eject the workpiece (5) from the bottom mold module (14).

9. A spray masking device according to claim 8, characterized in that, The bottom mold module (14) includes a jig base frame (141) and a cover bottom mold (142). The jig base frame (141) is mounted on the support (11), and the cover bottom mold (142) is detachably mounted on the jig base frame (141). The cover bottom mold (142) and the lower surface of the workpiece (5) are in concave-convex fit.

10. A spraying equipment, characterized in that, It includes a spraying device and a spraying masking device as described in any one of claims 1-9, wherein the spraying device is used to spray the workpiece (5) on the spraying masking device.

Images