Special-shaped metal pressure rubber part metal framework surface sand blasting protection device

Abstract

The utility model relates to the technical field of machining, in particular to a special-shaped metal pressure rubber part metal framework surface sand blasting protection device which comprises an upper protection plate, a lower protection plate, a lower protection plate and a sand blasting device. The lower protection plate is arranged on the metal framework in a sleeving manner and is attached to the outer circular surface of the metal framework; the middle protection plate is attached to the inner circular surface, the inner hole end surface, the cylindrical hole surface and the inner circular side surface of the metal framework; the lower supporting plate is attached to the lower end face of the metal framework; and the lengthened fastening bolt penetrates through the through hole of the lower supporting plate and is matched with the threaded hole of the middle protection plate. According to the utility model, the batch sand blasting processing of the metal framework can be realized, the full coverage of the surface which does not need sand blasting can be realized, the sand blasting effect of the product is ensured, and the condition of excessive sand blasting on the non-sand-blasting surface of the product caused by non-tight wrapping of manually wound adhesive tape is avoided. Meanwhile, the adhesive tape can be repeatedly used, so that the adhesive tape is completely omitted, and the production consumption of the adhesive tape is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a sandblasting protection device for the surface of a metal skeleton of an irregularly shaped metal press-fit part. Background Technology

[0002] Before vulcanization, the metal surface of the vulcanized rubber needs to be treated to meet the vulcanization requirements. Since only part of the surface of the metal parts needs to be vulcanized, only the vulcanized surface needs to be sandblasted. The unvulcanized metal surface needs to be protected during the sandblasting process to prevent surface damage.

[0003] Traditional surface protection methods using adhesive tape cannot meet actual production needs. Manually wrapping adhesive tape around a single metal part is time-consuming, accounting for a significant portion of the sandblasting process. Furthermore, the tape is a disposable item and cannot be reused, resulting in high consumption and production costs. In addition, workers often fail to wrap the parts securely with tape, leading to excessive sandblasting on non-sandblasted surfaces. During tape removal, sand and gravel adhering to the tape and non-sandblasted surfaces can scratch the product, affecting surface quality and failing to meet sandblasting protection requirements. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a sandblasting protection device for the surface of the metal skeleton of irregularly shaped metal pressing parts.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0006] A sandblasting protection device for the surface of a metal skeleton of an irregularly shaped metal bonding component, comprising:

[0007] The upper protective plate is fitted to the upper end face and the upper conical surface of the metal frame, and the upper protective plate is provided with threaded holes.

[0008] The lower protective plate is fitted onto the metal frame and fits against the outer circular surface of the metal frame. It is parallel to the upper protective plate. The lower protective plate is provided with a threaded hole. The threaded hole of the upper protective plate and the threaded hole of the lower protective plate are engaged by fastening bolts.

[0009] The middle protective plate is fitted to the inner circular surface, inner hole end face, cylindrical hole surface and inner circular side surface of the metal frame, and the middle protective plate is provided with a threaded hole in the middle.

[0010] The lower support plate is fitted to the lower end face of the metal frame, and a lower support plate through hole is provided in the middle of the lower support plate;

[0011] The extended fastening bolt passes through the through hole of the lower support plate and mates with the threaded hole of the middle protective plate.

[0012] As a further improvement of this utility model, the upper protective plate includes a lower end face of the upper protective plate, an upper upper end face of the upper protective plate, and a conical surface of the upper protective plate. The lower end face of the upper protective plate is attached to the upper end face of the metal frame, and the conical surface of the upper protective plate is matched with the upper conical surface of the metal frame with a matching gap of no more than 0.1mm.

[0013] As a further improvement of this utility model, the lower protective plate includes an upper upper surface, a lower lower surface, and a conical surface. The upper upper surface and the lower lower surface are parallel to the upper protective plate, and the conical surface is in contact with the outer circular surface of the metal frame.

[0014] As a further improvement of this utility model, the middle protective plate includes a conical surface, a lower end surface, a cylindrical surface, and an outer circular surface. The conical surface of the middle protective plate mates with the inner circular surface of the metal frame with a clearance not exceeding 0.1 mm. The lower end surface of the middle protective plate is fitted with the inner hole end face of the metal frame. The cylindrical surface of the middle protective plate mates with the cylindrical hole surface of the metal frame with a clearance not exceeding 0.5 mm on one side. The outer circular surface of the middle protective plate mates with the inner circular side surface of the metal frame with a clearance not exceeding 0.2 mm.

[0015] As a further improvement of this utility model, the lower support plate includes an upper upper surface and a lower lower support plate, wherein the upper upper surface of the lower support plate is in contact with the lower lower surface of the metal frame.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides a sandblasting protection device for the metal frame surface of irregularly shaped metal press-fit parts. It enables batch sandblasting of metal frames. Production personnel place the metal parts into the fixture using an assembly / disassembly process, achieving full coverage of surfaces that do not require sandblasting. This ensures the sandblasting effect of the product and avoids over-sandblasting of non-sandblasted surfaces due to inadequate manual tape wrapping. It also prevents scratches caused by sand and gravel adhering to the tape and non-sandblasted surfaces during tape removal, affecting the product's surface quality. Furthermore, the device is reusable, completely eliminating the need for tape and reducing tape production consumption. It effectively protects non-sandblasted surfaces during sandblasting and improves sandblasting efficiency. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1A three-dimensional schematic diagram of the metal frame;

[0020] Figure 2 This is a cross-sectional view of the metal skeleton.

[0021] Figure 3 This is a three-dimensional schematic diagram of the present invention after it has been assembled into a metal frame;

[0022] Figure 4 This is a cross-sectional view of the present invention after it has been assembled into a metal frame;

[0023] Figure 5 This is a cross-sectional view of the upper protective plate of this utility model;

[0024] Figure 6 This is a top view of the upper protective plate of this utility model.

[0025] Figure 7 This is a cross-sectional view of the lower protective plate of this utility model;

[0026] Figure 8 This is a top view of the lower protective plate of this utility model.

[0027] Figure 9 This is a cross-sectional view of the protective plate in this utility model;

[0028] Figure 10 This is a top view of the protective plate in this utility model.

[0029] Figure 11 This is a cross-sectional view of the lower support plate of this utility model.

[0030] Figure 12 This is a top view of the lower support plate of this utility model.

[0031] In the diagram: 1. Upper protective plate; 101. Lower end face of upper protective plate; 102. Upper upper end face of upper protective plate; 103. Conical surface of upper protective plate; 104. Threaded hole of upper protective plate; 2. Lower protective plate; 201. Upper end face of lower protective plate; 202. Lower end face of lower protective plate; 203. Conical surface of lower protective plate; 204. Threaded hole of lower protective plate; 3. Middle protective plate; 301. Conical surface of middle protective plate; 302. Lower end face of middle protective plate; 303. Threaded hole of middle protective plate; 304. Cylindrical surface of middle protective plate; 305. Outer circular surface of middle protective plate; 4. Lower support plate; 401. Upper end face of lower support plate; 402. Through hole of lower support plate; 403. Lower end face of lower support plate; 5. Extended fastening bolt; 6. Fastening bolt. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] like Figures 3 to 4 As shown, a sandblasting protective device for the surface of a metal frame of an irregularly shaped metal press-fit part mainly includes an upper protective plate 1, a lower protective plate 2, a middle protective plate 3, a lower support plate 4, an extended fastening bolt 5, and a fastening bolt 6.

[0034] Furthermore, such as Figure 5 and Figure 6 The diagram shows the structure of the upper protective plate 1. The upper protective plate 1 includes a lower end face 101, an upper upper end face 102, a conical surface 103, and threaded holes 104. The lower end face 101 of the upper protective plate is fitted to the upper end face of the metal frame. The conical surface 103 of the upper protective plate mates with the upper conical surface of the metal frame with a clearance not exceeding 0.1 mm. Two threaded holes 104 are provided.

[0035] like Figure 7 and Figure 8 The diagram shows the structure of the lower protective plate 2. The lower protective plate 2 includes an upper upper surface 201, a lower lower surface 202, a conical surface 203, and threaded holes 204. The upper upper surface 201 and lower lower surface 202 of the lower protective plate are parallel to the lower lower surface 101 and upper upper surface 102 of the upper protective plate 1. The conical surface 203 of the lower protective plate fits against the outer circular surface of the metal frame. Two threaded holes 204 are provided in the lower protective plate, corresponding vertically to the threaded holes 104 in the upper protective plate. Two fastening bolts 6 are provided, which, through the threaded holes 104 and 204 in the upper and lower protective plates respectively, complete the installation and fixation of the upper protective plate 1, the lower protective plate 2, and the metal frame.

[0036] like Figure 9 and Figure 10The diagram shows the structure of the middle protective plate 3. The middle protective plate 3 includes a conical surface 301, a lower end face 302, a threaded hole 303, a cylindrical surface 304, and an outer circular surface 305. The conical surface 301 mates with the inner circular surface of the metal frame with a clearance not exceeding 0.1 mm. The lower end face 302 fits against the inner hole end face of the metal frame. The threaded hole 303 is located in the middle of the middle protective plate 3. The cylindrical surface 304 mates with the cylindrical hole surface of the metal frame with a clearance not exceeding 0.5 mm on any side. The outer circular surface 305 mates with the inner circular side surface of the metal frame with a clearance not exceeding 0.2 mm.

[0037] like Figure 11 and Figure 12 The diagram shows the structure of the lower support plate 4. The lower support plate 4 includes an upper upper surface 401, a through hole 402, and a lower lower surface 403. The upper upper surface 401 of the lower support plate is fitted to the lower surface of the metal frame. The lower lower surface 403 of the lower support plate is parallel to the lower surface of the metal frame; the extended fastening bolt 5 passes through the through hole 402 of the lower support plate and is threaded into the threaded hole 303 of the middle protective plate.

[0038] Working principle and usage process of this utility model:

[0039] In use, the lower protective plate 2 is fitted onto the metal frame, with its conical surface 203 fitting against the outer circular surface of the metal frame. The upper protective plate 1 is installed on the upper end face of the metal frame, with its conical surface 103 engaging with the upper conical surface of the metal frame. The upper protective plate 1 and the lower protective plate 2 are kept parallel to each other. Then, fastening bolts 6 are passed through the threaded holes 104 and 204 of the upper and lower protective plates to complete the fixed installation of the upper protective plate 1, lower protective plate 2, and metal frame. Next, the middle protective plate 3 is placed on the upper end of the metal frame, with its conical surface 301 engaging with the inner circular surface of the metal frame. The lower end of the middle protective plate... The inner end face of the middle protective plate 302 is fitted with the inner hole end face of the metal frame, the cylindrical surface 304 of the middle protective plate is fitted with the cylindrical hole surface of the metal frame, the outer circular surface 305 of the middle protective plate is fitted with the inner circular side surface of the metal frame, the lower support plate 4 is fitted with the lower end face of the metal frame, and the lower end face 403 of the lower support plate is kept parallel to the lower end face of the metal frame. Then, the extended fastening bolt 5 is threaded through the through hole 402 of the lower support plate and threaded into the threaded hole 303 of the middle protective plate to complete the fixed installation of the middle protective plate, the lower support plate and the metal frame. Then, the sandblasting equipment is started to sandblast the area that needs to be sandblasted, and finally the sandblasting of the area of ​​the metal frame is completed.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sandblasting protection device for the surface of a metal skeleton of an irregularly shaped metal bonding component, characterized in that: include: The upper protective plate (1) is attached to the upper end face and the upper conical surface of the metal frame, and the upper protective plate (1) is provided with an upper protective plate threaded hole (104); The lower protective plate (2) is fitted on the metal frame and fits the outer circular surface of the metal frame. It is parallel to the upper protective plate (1). The lower protective plate (2) is provided with a lower protective plate threaded hole (204). The upper protective plate threaded hole (104) and the lower protective plate threaded hole (204) are fitted by fastening bolts (6). The middle protective plate (3) is fitted with the inner circular surface, inner hole end face, cylindrical hole surface and inner circular side surface of the metal frame. The middle protective plate (3) is provided with a middle protective plate threaded hole (303) in the middle. The lower support plate (4) is attached to the lower end face of the metal frame, and a lower support plate through hole (402) is provided in the middle of the lower support plate (4). The extended fastening bolt (5) passes through the through hole (402) of the lower support plate and engages with the threaded hole (303) of the middle protective plate.

2. The surface sandblasting protection device for the metal skeleton of an irregularly shaped metal bonding component according to claim 1, characterized in that: The upper protective plate (1) includes a lower end face (101), an upper end face (102), and a conical surface (103). The lower end face (101) of the upper protective plate is attached to the upper end face of the metal frame, and the conical surface (103) of the upper protective plate is engaged with the upper conical surface of the metal frame with a engagement gap not exceeding 0.1 mm.

3. The surface sandblasting protection device for the metal skeleton of an irregularly shaped metal bonding part according to claim 1, characterized in that: The lower protective plate (2) includes an upper upper surface (201), a lower lower surface (202), and a conical surface (203). The upper upper surface (201) and the lower lower surface (202) of the lower protective plate are parallel to the upper protective plate (1), and the conical surface (203) of the lower protective plate is in contact with the outer circular surface of the metal frame.

4. The surface sandblasting protection device for the metal skeleton of an irregularly shaped metal bonding part according to claim 1, characterized in that: The middle protective plate (3) includes a conical surface (301), a lower end surface (302), a cylindrical surface (304), and an outer circular surface (305). The conical surface (301) of the middle protective plate mates with the inner circular surface of the metal frame with a clearance not exceeding 0.1 mm. The lower end surface (302) of the middle protective plate fits against the inner hole end face of the metal frame. The cylindrical surface (304) of the middle protective plate mates with the cylindrical hole surface of the metal frame with a clearance not exceeding 0.5 mm on one side. The outer circular surface (305) of the middle protective plate mates with the inner circular side surface of the metal frame with a clearance not exceeding 0.2 mm.

5. The surface sandblasting protection device for the metal skeleton of an irregularly shaped metal bonding component according to claim 1, characterized in that: The lower support plate (4) includes an upper upper surface (401) and a lower lower surface (403), wherein the upper upper surface (401) of the lower support plate is attached to the lower surface of the metal frame.

Images