Nut rust-proof paint spraying device
By using a conveyor belt and guide frame in the nut anti-rust painting device, the threaded holes of the nuts are sealed, which solves the problem of high assembly resistance caused by the lack of shielding of the threaded holes during the nut painting process, and improves the painting efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU TIANTAI AVIATION PARTS MFG CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing nut painting equipment, the threaded holes lack shielding protection during the painting process, resulting in high turning resistance when assembling nuts and bolts.
A rust-preventive painting device for nuts was designed. It uses a conveyor belt and a guide frame. Through the transition hole of the guide frame and the cooperation between the feed cylinder push rod and the push cylinder, the threaded hole of the nut is sealed to prevent paint from adhering.
It effectively prevents paint from adhering to the threaded hole of the nut, reduces the turning resistance when assembling the nut and bolt, and improves the efficiency and quality of painting.
Smart Images

Figure CN224237167U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the field of spray painting equipment technology, specifically to a rust-proof spray painting device for nuts. Background Technology
[0002] In the process of spraying anti-rust paint on nuts, the threaded holes of the nuts need to be sealed to prevent paint from adhering to the threads, which could cause problems such as difficulty in tightening and jamming when assembling the nuts and bolts.
[0003] An existing patent (publication number: CN213000702U) discloses a rust-proof painting device for nuts and bolts, including a painting box, an inlet, and an outlet. The inlet and outlet are located on the two side walls of the painting box. The painting box is equipped with a conveying structure and a painting drying structure. The conveying structure includes a motor, two rolling bearings, two rotating rods, two gears, a chain, and several hooks. This utility model relates to the technical field of rust-proof painting equipment. The beneficial effects of this invention are: it effectively solves the technical problems of low painting efficiency and uneven painting in traditional manual operation of bolt and nut painting, which affects the use effect of bolts and nuts. This invention also has the advantages of simple structure, convenient operation, small footprint, and easy mobility.
[0004] In the process of implementing this solution, when the inventor used a hook and chain conveyor to transport the nut to the spray head for painting, the threaded hole of the nut lacked masking treatment, which caused paint to adhere to the threaded hole of the nut, resulting in high turning resistance when the nut and bolt were assembled. Utility Model Content
[0005] 1. Technical problem solved by the utility model:
[0006] This utility model provides a rust-proof painting device for nuts, which solves the technical problem that the lack of shielding protection for threaded holes in existing nut painting operations leads to high resistance in the assembly and tightening of nuts and bolts.
[0007] 2. Technical Solution:
[0008] To achieve the above objectives, the technical solution provided by this utility model is: a rust-proof painting device for nuts, comprising the following structure:
[0009] A truss, wherein a conveyor belt is provided in the middle of the truss, and multiple conveyor rods are fixed at equal intervals on the outer side of the conveyor belt. A guide frame is detachably snapped onto the right side of the truss, and a transition hole for cooperating with the conveyor rods is fixed in the middle of the guide frame.
[0010] The mounting plate has a deflection cylinder fixedly installed at its rear bottom, a feeding cylinder fixedly installed at its right end, and a guide rail fixedly installed at its top.
[0011] Furthermore, a drive motor is fixedly installed at the bottom front end of the truss, a drive roller is movably connected to the front end of the truss, the bottom of the drive roller is fixedly connected to the top output end of the drive motor, the outer side of the drive roller is movably connected to the inner front end of the conveyor belt, an auxiliary roller is movably connected to the rear end of the truss, the outer side of the auxiliary roller is movably connected to the inner rear end of the conveyor belt, and multiple support rollers are movably connected to the left and right sides of the truss, the outer side of the support roller is movably connected to the inner side of the conveyor belt.
[0012] Furthermore, a partition frame is detachably snapped onto the right side of the truss. The inner front side and inner rear side of the partition frame are respectively divided into a painting area and a drying area. A painting assembly is fixed to the inner front side of the partition frame. A frame is fixed to the top and bottom of the rear end of the partition frame. Multiple fans are fixed at equal intervals on the outer side of the frame.
[0013] Furthermore, the distance between the rear end of the guide frame and the rear end of the conveyor belt gradually increases.
[0014] Furthermore, a limiting plate is fixedly provided at the rear output end of the deflection cylinder, and the outer side of the limiting plate abuts against the rear end of the guide rail.
[0015] Furthermore, a mounting bracket is fixedly provided at the left output end of the feeding cylinder, and a push rod and a pushing cylinder are fixedly provided at the bottom and top of the rear end of the mounting bracket, respectively. The left end of the push rod cooperates with the rear end of the guide rail, and the axial direction of the push rod is kept at the same horizontal plane as the axial direction of the conveying rod. A push plate is fixedly provided at the left output end of the pushing cylinder.
[0016] Furthermore, a discharge notch is provided on the left rear end of the guide rail, which mates with the left end of the push rod.
[0017] 3. Beneficial effects:
[0018] Compared with the prior art, the technical solution provided by this utility model has the following advantages:
[0019] This utility model provides a rust-proof painting device for nuts. The feeding cylinder completes the left and right movement of the push rod and the pushing cylinder on the right side of the guide rail through the mounting bracket. The push rod cooperates with the push plate to push the nut to the conveying rod. The pushing cylinder cooperates with the push plate to push the nut outside the push rod onto the conveying rod. The specific size of the conveying rod is adjusted according to the size of the nut to be processed. The thread hole of the nut to be painted is sealed to prevent paint from adhering to the thread hole of the nut and causing it to dry and rotate.
[0020] This utility model provides a nut anti-rust spraying device. The transition hole design of the guide frame, combined with the increased distance between the rear end of the guide frame and the rear end of the conveyor belt, facilitates the conveyor belt to drive the conveyor rod to the rear end of the guide frame. The guide frame pushes the nut outside the conveyor rod away, completing the nut discharge setting for spraying.
[0021] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0022] Figure 1 This is a perspective view of the structure of this utility model;
[0023] Figure 2 This is a top view of the guide frame structure of this utility model;
[0024] Figure 3 This is a perspective view of the isolation frame structure of this utility model;
[0025] Figure 4 This is a perspective view of the feeding cylinder structure of this utility model;
[0026] Figure 5 This is a utility model Figure 4 Enlarged view of the structure at point A in the middle;
[0027] Figure 6 This is a perspective view of the deflection cylinder structure of this utility model.
[0028] Figure label:
[0029] Truss-1; Drive motor-11; Drive roller-12; Auxiliary roller-13; Support roller-14;
[0030] Conveyor belt-2; Conveyor rod-21;
[0031] Guide frame-3; Transition hole-31;
[0032] Isolation rack - 4; Painting area - 41; Drying area - 42; Painting assembly - 43; Rack - 44; Fan - 45;
[0033] Mounting plate-5;
[0034] Deflection cylinder-6; Limit plate-61;
[0035] Feeding cylinder-7; Mounting bracket-71; Push rod-72; Pushing cylinder-73; Push plate-74;
[0036] Guide rail-8; discharge notch-81. Detailed Implementation
[0037] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.
[0038] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0040] See attached document Figure 1-6 This utility model provides a rust-proof painting device for nuts, comprising the following structure:
[0041] A truss 1 is provided with a conveyor belt 2 in the middle of the truss 1. Multiple conveyor rods 21 are fixed at equal intervals on the outer side of the conveyor belt 2. A guide frame 3 is detachably snapped onto the right side of the truss 1. A transition hole 31 for cooperating with the conveyor rods 21 is fixed in the middle of the guide frame 3.
[0042] Mounting plate 5, with a deflection cylinder 6 fixed at the bottom rear end, a feeding cylinder 7 fixed at the right end, and a guide rail 8 fixed at the top.
[0043] In this embodiment, a drive motor 11 is fixedly installed at the bottom front end of the truss 1, a drive roller 12 is movably connected to the front end of the truss 1, the bottom of the drive roller 12 is fixedly connected to the top output end of the drive motor 11, the outer side of the drive roller 12 is movably connected to the inner side of the front end of the conveyor belt 2, an auxiliary roller 13 is movably connected to the rear end of the truss 1, the outer side of the auxiliary roller 13 is movably connected to the inner side of the rear end of the conveyor belt 2, and multiple support rollers 14 are movably connected to the left and right sides of the truss 1, the outer side of the support roller 14 is movably connected to the inner side of the conveyor belt 2.
[0044] The drive motor 11 works in conjunction with the drive roller 12 to complete the movement of the conveyor belt 2 outside the truss 1, change the working position of the conveyor rod 21, and complete the process of the conveyor rod 21 receiving the nut through the discharge notch 81 of the guide rail 8. The conveyor belt 2 is then sprayed by the paint spraying assembly 43 in the paint spraying area 41 and dried by the fan 45 in the drying area 42. The auxiliary roller 13 and the support roller 14 complete the assembly of the conveyor belt 2 outside the truss 1.
[0045] In this embodiment, a partition frame 4 is detachably snapped onto the right side of the truss 1. The inner front side and the inner rear side of the partition frame 4 are respectively divided into a painting area 41 and a drying area 42. A painting assembly 43 is fixedly installed on the inner front side of the partition frame 4. A frame 44 is fixedly installed on the top and bottom of the rear end of the partition frame 4. Multiple fans 45 are fixedly installed at equal intervals on the outer side of the frame 44.
[0046] The isolation frame 4 separates the painting area 41 and the drying area 42. The painting assembly 43 paints the nuts on the right side of the truss 1, and the fan 45 dries the painted nuts on the right side of the truss 1.
[0047] In this embodiment, the distance between the rear end of the guide frame 3 and the rear end of the conveyor belt 2 gradually increases.
[0048] The transition hole 31 of the guide frame 3, combined with the increased distance between the rear end of the guide frame 3 and the rear end of the conveyor belt 2, facilitates the conveyor belt 2 to drive the conveyor rod 21 to the rear end of the guide frame 3. The guide frame 3 pushes away the nut outside the conveyor rod 21, completing the nut discharge setting for the painting process.
[0049] In this embodiment, a limiting plate 61 is fixedly provided at the rear output end of the deflection cylinder 6, and the outer side of the limiting plate 61 abuts against the rear end of the guide rail 8.
[0050] The deflection cylinder 6 and the limit plate 61 work together to prevent the nut guided on the guide rail 8 from slipping off the rear end of the guide rail 8.
[0051] In this embodiment, a mounting bracket 71 is fixedly provided on the left output end of the feeding cylinder 7. A push rod 72 and a pushing cylinder 73 are fixedly provided at the bottom and top of the rear end of the mounting bracket 71, respectively. The left end of the push rod 72 cooperates with the rear end of the guide rail 8. The axial direction of the push rod 72 is kept at the same horizontal plane as the axial direction of the conveying rod 21. A push plate 74 is fixedly provided on the left output end of the pushing cylinder 73.
[0052] The feeding cylinder 7, through the mounting bracket 71, enables the push rod 72 and the pushing cylinder 73 to move left and right on the right side of the guide rail 8. The push rod 72 cooperates with the push plate 74 to push the nut to the conveying rod 21. The pushing cylinder 73 cooperates with the push plate 74 to push the nut outside the push rod 72 onto the conveying rod 21. The specific dimensions of the conveying rod 21 are adjusted according to the dimensions of the nut to be processed. The threaded holes of the nut to be painted are sealed to prevent paint from adhering to the threaded holes of the nut and causing it to dry and rotate.
[0053] In this embodiment, a discharge notch 81 is provided on the left side of the rear end of the guide rail 8, and the discharge notch 81 cooperates with the left end of the push rod 72.
[0054] The discharge notch 81 cooperates with the push rod 72, which facilitates the cooperation between the push rod 72 and the push plate 74 to push the nut from the guide rail 8 to the conveyor rod 21.
[0055] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A rust-preventive painting device for nuts, characterized in that: Includes the following structure: A truss (1) is provided with a conveyor belt (2) in the middle of the truss (1). Multiple conveyor rods (21) are fixed at equal intervals on the outer side of the conveyor belt (2). A guide frame (3) is detachably snapped onto the right side of the truss (1). A transition hole (31) for cooperating with the conveyor rods (21) is fixed in the middle of the guide frame (3). Mounting plate (5), with a deflection cylinder (6) fixed at the bottom rear end of the mounting plate (5), a feeding cylinder (7) fixed at the right end of the mounting plate (5), and a guide rail (8) fixed at the top of the mounting plate (5).
2. The rust-preventive painting device for nuts according to claim 1, characterized in that: A drive motor (11) is fixedly installed at the bottom of the front end of the truss (1). A drive roller (12) is movably connected to the front end of the truss (1). The bottom of the drive roller (12) is fixedly connected to the top output end of the drive motor (11). The outer side of the drive roller (12) is movably connected to the inner side of the front end of the conveyor belt (2). An auxiliary roller (13) is movably connected to the rear end of the truss (1). The outer side of the auxiliary roller (13) is movably connected to the inner side of the rear end of the conveyor belt (2). Multiple support rollers (14) are movably connected to the left and right sides of the truss (1). The outer side of the support roller (14) is movably connected to the inner side of the conveyor belt (2).
3. The rust-preventive painting device for nuts according to claim 1, characterized in that: The right side of the truss (1) is detachably attached to an isolation frame (4). The inner front side and the inner rear side of the isolation frame (4) are respectively divided into a painting area (41) and a drying area (42). A painting assembly (43) is fixedly installed on the inner front side of the isolation frame (4). A frame (44) is fixedly installed on the top and bottom of the rear end of the isolation frame (4). Multiple fans (45) are fixedly installed at equal intervals on the outer side of the frame (44).
4. The rust-preventive painting device for nuts according to claim 1, characterized in that: The distance between the rear end of the guide frame (3) and the rear end of the conveyor belt (2) gradually increases.
5. The rust-preventive painting device for nuts according to claim 1, characterized in that: The rear output end of the deflection cylinder (6) is fixed with a limiting plate (61), and the outer side of the limiting plate (61) abuts against the rear end of the guide rail (8).
6. The rust-preventive painting device for nuts according to claim 1, characterized in that: The left output end of the feeding cylinder (7) is fixedly provided with a mounting bracket (71). The bottom and top of the rear end of the mounting bracket (71) are respectively fixedly provided with a push rod (72) and a pushing cylinder (73). The left end of the push rod (72) cooperates with the rear end of the guide rail (8). The axial direction of the push rod (72) is kept at the same horizontal plane as the axial direction of the conveying rod (21). The left output end of the pushing cylinder (73) is fixedly provided with a push plate (74).
7. The rust-preventive painting device for nuts according to claim 1, characterized in that: The guide rail (8) has a discharge notch (81) on the left side of its rear end, which is engaged with the left end of the push rod (72).