Positioning jig for paint spraying of card support
By designing a positioning fixture for card tray painting and using a clamping plate structure to isolate the waterproof gasket, the problem of contamination of the waterproof gasket during the painting process was solved, achieving uniform coating of the card tray and protection of the waterproof gasket, thus improving product quality.
Patent Information
- Application Number
- CN202423254136.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-28
AI Technical Summary
In existing technologies, the waterproof gasket of a mobile phone SIM card tray is easily contaminated by paint during the painting process, affecting its service life and product qualification rate.
Design a positioning fixture for spray painting of card trays. It adopts a clamping plate structure. Through the cooperation of the limiting protrusion ring and the retaining ring, the waterproof gasket is isolated to prevent paint from splashing onto the waterproof gasket. The precise fit of the clamping plate and the positioning holes enable uniform spraying of the card tray.
This achieves uniform coating of the card holder cap, prevents contamination of the waterproof gasket, extends its service life, and improves the product qualification rate.
Smart Images

Figure CN223761275U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fixture technology, specifically a positioning fixture for paint spraying. Background Technology
[0002] With advancements in technology, SIM cards no longer require removing the battery to insert; a card tray is simply placed on the side of the phone. These trays are first formed using high-precision stamping molds. After stamping, the top surface of the formed tray is painted to meet the needs of different customers. Currently, to achieve waterproofing, SIM card trays often have a waterproof gasket below the SIM card holder. Figure 8 When the waterproof card holder (6) shown is painted, it is still positioned by a simple vertical placement structure with a single insertion hole. The gap between the insertion holes is relatively large. During the spraying process, the paint will fall into the waterproof gasket (602) through the gap between the insertion holes, causing some pollution to the waterproof gasket (602). This will easily lead to some corrosion and affect its subsequent service life. Therefore, a new positioning fixture needs to be designed to solve this problem. Utility Model Content
[0003] The purpose of this utility model is to provide a positioning fixture for carton spraying, so as to solve the technical problems in the background art.
[0004] To achieve the aforementioned objectives, this utility model provides the following technical solution:
[0005] A positioning fixture for spraying paint on a card tray includes a base. The base has several sets of parallel, equidistantly arranged elongated mounting holes. Each mounting hole has a clamp inserted into it. The clamp has several identical positioning holes equidistantly arranged along its length for mounting the card tray. Each positioning hole has a limiting protrusion at its top. The shape of the positioning hole matches the shape of the card tray. The limiting protrusion is above the waterproof gasket of the card tray.
[0006] The top of the positioning hole is provided with an upwardly protruding retaining ring, which is arranged along the circumference of the limiting protrusion ring and matches the shape of the card tray cap buckle on the card tray.
[0007] The clamping plate includes a first clamping plate and a second clamping plate. The first clamping plate has a first mounting groove equidistantly arranged along its length direction, and the second clamping plate has a second mounting groove equidistantly arranged along its length direction. The positioning insertion hole is formed by splicing the first mounting groove and the second mounting groove. A first boss is provided above the first mounting groove, and a second boss is provided on the second mounting groove. The limiting ring is formed by splicing the first boss and the second boss. A first baffle protrudes upward from the first boss, and a second baffle is correspondingly provided above the second boss. The retaining ring is formed by splicing the first baffle and the second baffle.
[0008] The first clamping plate is provided with a plurality of positioning pins facing the second clamping plate, and the second clamping plate is provided with corresponding positioning holes that are inserted into the positioning pins.
[0009] The mounting hole has upwardly protruding pads on both sides, and the outer end face of the pads has an arc-shaped structure. The clamping plate has outwardly extending third protrusions on both sides, which are placed above the pads.
[0010] A bottom cover is snapped onto the top of the base, and the bottom cover has several hooks. A corresponding step is provided on the base, and the hooks are snapped onto the step.
[0011] Compared with the prior art, the positioning fixture for spray painting of card trays in this application can not only ensure the uniform spraying of the card tray cap buckle, but also prevent the waterproof gasket from being contaminated. The card tray is clamped and positioned by the structure of two clamping plates, and the installation method is simple and quick. In this application, the waterproof gasket on the card tray is isolated below the limiting protrusion ring, which effectively avoids the waterproof gasket from being contaminated during the spray painting operation, ensures the subsequent service life of the waterproof gasket, and effectively improves the product qualification rate. Attached Figure Description
[0012] Figure 1 : A three-dimensional structural diagram of this application;
[0013] Figure 2 : The front view of this application;
[0014] Figure 3 : Figure 2 Larger image at point A;
[0015] Figure 4 : 3D structural diagram of the base;
[0016] Figure 5 : 3D structural diagram of the plywood;
[0017] Figure 6 : Three-dimensional structural diagram of the first clamping plate;
[0018] Figure 7 : Three-dimensional structure diagram of the second clamping plate;
[0019] Figure 8 : Schematic diagram of the installation structure of the card holder inside the clamp. Detailed Implementation
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0021] Specific Implementation Example 1: Please refer to Figures 1 to 8 In this embodiment of the utility model, a positioning fixture for spraying paint on a card tray includes a base 1. The base 1 is provided with a plurality of parallel and equidistantly arranged elongated mounting holes 101. A clamping plate 2 is inserted into each mounting hole 101. The clamping plate 2 is provided with a plurality of identical positioning insertion holes 201 along its length direction for mounting the card tray 6. A limiting protrusion ring 202 is provided at the top of each positioning insertion hole 201. The shape of the positioning insertion hole 201 matches the shape of the card tray 6. The limiting protrusion ring 202 is above the waterproof gasket 602 of the card tray 6.
[0022] The top of the positioning socket 201 is provided with an upwardly protruding retaining ring 203. The retaining ring 203 is set along the circumference of the limiting protrusion ring 202. The retaining ring 203 matches the shape of the card holder cap 601 on the card holder 6. When the card holder 6 is installed, the card holder cap 601 on the card holder 6 is supported above the limiting protrusion ring 202, isolating the waterproof gasket 602 below the card holder cap 601 under the limiting protrusion ring 202, preventing paint from splashing onto the waterproof gasket 602 during the painting process.
[0023] The clamping plate 2 includes a first clamping plate 3 and a second clamping plate 4. The first clamping plate 3 has a first mounting groove 301 equidistantly arranged along its length direction, and the second clamping plate 4 has a second mounting groove 401 equidistantly arranged along its length direction. The positioning insertion hole 201 is formed by splicing the first mounting groove 301 and the second mounting groove 401. A first boss 302 is provided above the first mounting groove 301, and a second boss 402 is provided on the second mounting groove 401. The limiting protrusion ring 202 is formed by splicing the first boss 302 and the second boss 402. The first boss 302 has a first baffle 303 protruding upwards, and the second boss 402 has a corresponding second baffle 403 above it. The retaining ring 203 is formed by splicing the first baffle 303 and the second baffle 403. The first clamping plate 3 has a number of positioning pins 304 in the direction of the second clamping plate 4. The second clamping plate 4 has corresponding positioning holes 404 that are inserted into the positioning pins 304. The positioning pins 304 and the positioning holes 404 effectively ensure the precise matching and splicing of the first clamping plate 3 and the second clamping plate 4.
[0024] On the left and right sides of the mounting hole 101, there are upwardly protruding pads 102. The outer end face of the pads 102 is arc-shaped. On the left and right sides of the clamping plate 2, there are outwardly extending third protrusions placed above the pads 102. The third protrusions make it easier for operators to pick up and remove the clamping plate 2 to install and remove the card holder 6.
[0025] A bottom cover 5 is attached to the top of the base 1 by a snap fastener. The bottom cover 5 has several hooks 501. The base 1 has a corresponding step 103. The hooks 501 are engaged with the step 103 to fasten and fix the base 1 and the bottom cover 5.
[0026] Compared with the prior art, the positioning fixture for spray painting of card trays in this application can not only ensure the uniform spraying of the card tray cap buckle, but also prevent the waterproof gasket from being contaminated. The card tray is clamped and positioned by the structure of two clamping plates, and the installation method is simple and quick. In this application, the waterproof gasket on the card tray is isolated below the limiting protrusion ring, which effectively avoids the waterproof gasket from being contaminated during the spray painting operation, ensures the subsequent service life of the waterproof gasket, and effectively improves the product qualification rate.
[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the foregoing exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A positioning jig for painting a card holder, characterized by: The base is provided with a plurality of groups of long structure mounting holes arranged side by side at equal distances, the mounting holes are inserted with clamps, the clamps are provided with a plurality of same structure positioning insertion holes for mounting the card holder along the length direction at equal distances, the top of the single positioning insertion hole is provided with a limiting convex ring, the shape of the positioning insertion hole is matched with the shape of the card holder, and the limiting convex ring is above the waterproof gasket of the card holder.
2. The positioning jig for painting a card according to claim 1, wherein: The top of the positioning insertion hole is provided with an upwardly protruding stop ring, the stop ring is arranged along the circumferential direction of the limiting convex ring, and the stop ring is matched with the buckle cap shape on the card holder.
3. The positioning jig for painting a card according to claim 2, wherein: The clamp comprises a first clamping plate and a second clamping plate, the first clamping plate is provided with a first mounting groove along the length direction at equal distances, the second clamping plate is provided with a second mounting groove along the length direction at equal distances, and the positioning insertion hole is formed by splicing the first mounting groove and the second mounting groove; the first mounting groove is provided with a first boss above, the second mounting groove is provided with a second boss, the limiting convex ring is formed by splicing the first boss and the second boss; the first boss is provided with a first stop plate protruding upward, the second boss is provided with a second stop plate above, and the stop ring is formed by splicing the first stop plate and the second stop plate.
4. The positioning jig for painting a card according to claim 3, wherein: The first clamping plate is provided with a plurality of positioning insertion columns towards the second clamping plate, and the second clamping plate is provided with corresponding positioning holes for inserting the positioning insertion columns.
5. The positioning jig for painting a card according to claim 4, wherein: The left and right sides of the mounting hole are provided with upwardly protruding pads, the outer end surface of the pad is an arc structure, and the left and right sides of the clamp are provided with outwardly extending third bosses placed above the pads.
6. The positioning jig for painting a card according to claim 5, wherein: The bottom cover is buckled and mounted above the base, the bottom cover is provided with a plurality of clamping hooks, the base is provided with a corresponding step portion, and the clamping hooks are buckled on the step portion.