A laser etching positioning clamp for a shell part

Abstract

The utility model discloses a kind of shell piece laser etching positioning clamps, it includes clamp base, clamp cover, clamp base interior has base inner cavity, clamp base outer surface is equipped with pipe joint, the upper surface of clamp base is provided with several suction holes respectively with base inner cavity intercommunication;The upper surface of clamp base is provided with profiled mold core, the upper surface of profiled mold core is profiled curved surface, several suction holes are respectively located profiled curved surface of profiled mold core;Clamp base is equipped with positioning block on the two sides opposite profiled mold core respectively, each positioning block is equipped with cover plate positioning pin protruding on the upper surface of corresponding positioning block;Clamp cover is respectively provided with vertical through cover plate positioning hole corresponding each cover plate positioning pin, clamp cover is provided with vertical through and shape and shell piece contour shape are adapted cover plate clearance hole. Through the above structural design, the utility model has the advantages of novel structure design, high positioning accuracy, and can be effectively applied to curved surface shell piece laser etching positioning.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a laser-engraved positioning fixture for outer shell parts. Background Technology

[0002] like Figure 1 The outer casing 10 shown has a curved surface structure, and its edges are provided with retaining walls 101 for limiting movement during assembly. For Figure 1 The outer casing 10 shown lacks a positioning hole structure, therefore, when laser-engraving its inner surface, positioning cannot be achieved by using a positioning pin to engage with a positioning hole. Furthermore, for... Figure 1 The outer casing 10 shown is often a thin-walled structure. Due to differences in processing, deformation or polishing, the shape of each outer casing product is prone to differences in its outline. Because it is impossible to achieve precise positioning, this has always been an industry problem.

[0003] It should be noted that the Chinese utility model patent with patent number ZL 202421130036.7 and patent name: "A Precision Positioning Structure for Laser Engraving Process", essentially discloses a laser engraving positioning fixture; the precision positioning structure for laser engraving process specifically discloses the following technical solution: a precision positioning structure for laser engraving process, including a box body, the inside of the box body has a cavity, a control pipe is fixedly installed from the bottom of the cavity to the outside of the box body, the box body is connected to an external cylinder through the control pipe, a suction cavity is opened above the cavity inside the box body, an arc groove is opened between the suction cavity and the cavity, a one-way valve is fixedly installed inside the arc groove, the one-way valve is set to allow the suction cavity to communicate with the cavity and the cavity to be closed to the suction cavity. When the aforementioned precision positioning structure for laser engraving is used for positioning, the external cylinder is connected to the control pipe. The item to be laser engraved is placed on the surface of the groove, and the external cylinder is activated to extract the air inside the tube and suction chamber to generate negative pressure. The negative pressure effect achieves adsorption and fixation of the item to prevent the item from shifting position.

[0004] However, the aforementioned precise positioning structure used in laser engraving still has the following shortcomings, specifically: Regarding... Figure 1 The outer shell shown is curved, and its outer surface is also curved. It cannot be accurately positioned by negative pressure adsorption alone. That is, the precise positioning structure used for laser engraving is not suitable for positioning the outer shell with a curved structure. Utility Model Content

[0005] The purpose of this utility model is to provide a laser engraving positioning fixture for outer shell parts in order to address the shortcomings of the existing technology. This laser engraving positioning fixture for outer shell parts has a novel structural design, high positioning accuracy, and can be effectively applied to laser engraving positioning of curved outer shell parts.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0007] A laser-engraved positioning fixture for a housing includes a fixture base, the interior of which has a base cavity, the outer surface of which is fitted with a pipe connector that communicates with the base cavity and is used to connect a negative pressure device, and the upper surface of which is provided with a plurality of air suction holes that communicate with the base cavity respectively. The upper surface of the fixture base is provided with a contour mold core, the upper surface of which is a contour curved surface, and several air suction holes are located on the contour curved surface of the contour mold core. The fixture base is equipped with positioning blocks on both sides directly opposite the mold core, and each positioning block is equipped with a cover plate positioning pin protruding from the upper surface of the corresponding positioning block. The laser-engraved positioning fixture for the outer casing is equipped with a fixture cover plate. The fixture cover plate has vertical through-holes corresponding to each cover plate positioning pin. The fixture cover plate also has vertical through-holes that are adapted to the shape of the outer casing. When the laser-engraved positioning fixture positions the outer casing, the fixture cover plate is placed on the upper surface of each positioning block, and the positioning pins of each cover plate are inserted into the corresponding positioning holes of the cover plate. The lower edge of the cover plate clearance hole of the fixture cover plate abuts against the retaining wall surface of the outer casing.

[0008] The fixture base includes a base plate and a base panel screwed to the upper surface of the base plate. The inner cavity of the base is formed by the base plate and the base panel together. The pipe joint is installed on the base plate or the base panel. The contour mold core is disposed on the upper surface of the base panel.

[0009] The base plate and the base panel are formed with a rubber ring groove that surrounds the outer periphery of the inner cavity of the base. A sealing rubber ring in a full-circle shape is embedded in the rubber ring groove and is clamped between the base plate and the base panel.

[0010] Each of the positioning blocks is screwed and fastened to the upper surface of the base panel.

[0011] Each of the aforementioned air intake holes is fitted with a corrugated vacuum nozzle.

[0012] The fixture base is provided with a number of sequentially spaced contour mold cores, each contour mold core having an air intake hole on its contoured surface, and the fixture cover plate having a cover plate clearance hole corresponding to each contour mold core.

[0013] Compared with existing technologies, this invention has the following advantages: Specifically, for curved shell parts, this invention uses the contoured curved surface of the contouring mold core for contouring positioning of the shell part, and the clamp cover plate for auxiliary positioning. This dual positioning method ensures the accuracy of the shell part's position before negative pressure adsorption and fixation, thereby ensuring the accuracy of the shell part's position during negative pressure adsorption and fixation. Therefore, the laser engraving positioning fixture for shell parts of this invention has the advantages of novel structural design and high positioning accuracy, and can be effectively applied to the laser engraving positioning of curved shell parts. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0015] Figure 1 This is a structural schematic diagram of the outer casing.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model.

[0017] Figure 3 This is an exploded view of the present invention.

[0018] Figure 4 This is a partial cross-sectional schematic diagram of the present invention.

[0019] exist Figures 1 to 4 This includes: 1- Fixture base; 11- Base inner cavity; 12- Suction hole; 13- Contouring mold core; 131- Contouring curved surface; 14- Base bottom plate; 15- Base panel; 16- Rubber ring groove; 17- Sealing rubber ring; 2- Pipe connector; 3- Positioning block; 31- Cover plate positioning pin; 4- Fixture cover plate; 41- Cover plate positioning hole; 42- Cover plate clearance hole; 5- Corrugated vacuum nozzle; 10- Outer shell; 101- Retaining wall surface. Detailed Implementation

[0020] The present invention will now be described in conjunction with specific embodiments.

[0021] Example 1, as Figures 2 to 4 As shown, a laser-engraved positioning fixture for a housing includes a fixture base 1. The fixture base 1 has an inner cavity 11. A pipe connector 2, communicating with the inner cavity 11 and used for connecting a negative pressure device, is mounted on the outer surface of the fixture base 1. A plurality of suction holes 12, each communicating with the inner cavity 11, are opened on the upper surface of the fixture base 1. It should be noted that in this embodiment, the pipe connector 2 is connected to the negative pressure device via an air extraction pipe, and the negative pressure device can be a vacuum pump.

[0022] Among them, such as Figure 3 and Figure 4 As shown, a contour mold core 13 is provided on the upper surface of the fixture base 1. The upper surface of the contour mold core 13 is a contour curved surface 131, and several air suction holes 12 are respectively located on the contour curved surface 131 of the contour mold core 13.

[0023] Furthermore, such as Figures 2 to 4 As shown, the fixture base 1 is equipped with positioning blocks 3 on both sides directly opposite the mold core 13, and each positioning block 3 is equipped with a cover plate positioning pin 31 protruding from the upper surface of the corresponding positioning block 3.

[0024] Furthermore, such as Figures 2 to 4 As shown, the laser-engraved positioning fixture for the outer casing is equipped with a fixture cover plate 4. The fixture cover plate 4 has vertically penetrating cover plate positioning holes 41 corresponding to each cover plate positioning pin 31. The fixture cover plate 4 has vertically penetrating cover plate clearance through holes 42 whose shape matches the outline shape of the outer casing 10.

[0025] It should be noted that when the laser-engraved positioning fixture of the outer shell 10 is used to position the outer shell 10, the fixture cover plate 4 is placed on the upper surface of each positioning block 3, and each cover plate positioning pin 31 is inserted into the corresponding cover plate positioning hole 41. The lower edge of the cover plate clearance hole 42 of the fixture cover plate 4 abuts against the retaining wall surface 101 of the outer shell 10.

[0026] The following is a detailed description of the laser engraving positioning fixture for the outer shell in Embodiment 1, with reference to the specific operation process. The operation process includes the following steps: Step a: Place the outer shell 10 on the contoured surface 131 of the contouring mold core 13, and make the outer surface of the outer shell 10 fit against the contoured surface 131 of the contouring mold core 13. Step b: Close the clamp cover plate 4 and align the cover plate positioning holes 41 of the clamp cover plate 4 with the cover plate positioning pins 31 of the positioning blocks 3. The cover plate positioning pins 31 are inserted into the corresponding cover plate positioning holes 41, and the clamp cover plate 4 is placed and positioned on the upper surface of the positioning blocks 3. During this process, the lower opening edge of the cover plate clearance hole 42 of the clamp cover plate 4 abuts against the retaining wall surface 101 of the outer shell 10 to assist in positioning the outer shell 10 through the clamp cover plate 4. Step c: After the clamp cover plate 4 is closed in place, start the negative pressure equipment and evacuate the inner cavity 11 of the base through the pipe joint 2 so that the inner cavity 11 of the base generates negative pressure and the suction holes 12 at the contoured curved surface 131 are negatively pressure adsorbed by the outer shell 10, thereby realizing the tight fixing position of the outer shell 10 before laser engraving. At this time, the inner surface of the outer shell 10 faces upward, and the laser engraving equipment can perform laser engraving on the inner surface of the outer shell 10 through the cover plate clearance hole 42. Step d: After the laser engraving of the outer shell 10 is completed, the negative pressure equipment stops operating, the fixture cover plate 4 is removed, and the laser-engraved outer shell 10 is removed from the contour mold core 13.

[0027] It should be emphasized that, for Figure 1 The curved outer shell 10 shown in this embodiment uses the laser engraving positioning fixture to position the outer shell 10 by contouring the contoured curved surface 131 of the contouring mold core 13, and to assist in positioning the outer shell 10 by using the fixture cover plate 4. The above dual positioning method can ensure the accuracy of the position of the outer shell 10 before negative pressure adsorption and fixation, thereby ensuring the accuracy of the position of the outer shell 10 after negative pressure adsorption and fixation, so as to achieve laser engraving precision positioning of the outer shell 10.

[0028] In summary, the laser engraving positioning fixture for the outer shell of this embodiment has the advantages of novel structural design and high positioning accuracy, and can be effectively applied to the laser engraving positioning of curved outer shell 10.

[0029] Example 2, as Figures 2 to 4 As shown, the difference between this embodiment 2 and embodiment 1 is that: the fixture base 1 includes a base plate 14 and a base panel 15 screwed and fastened to the upper surface of the base plate 14. The inner cavity 11 of the base is formed by the base plate 14 and the base panel 15. The pipe joint 2 is installed on the base plate 14 or the base panel 15. The contour mold core 13 is disposed on the upper surface of the base panel 15.

[0030] Example 3, as Figure 3 and Figure 4 As shown, the difference between this embodiment 3 and embodiment 2 is that: a rubber ring groove 16 is formed between the base plate 14 and the base panel 15, which surrounds the outer periphery of the inner cavity 11 of the base. A sealing rubber ring 17 in a full-circle shape is embedded in the rubber ring groove 16, and the sealing rubber ring 17 is fastened between the base plate 14 and the base panel 15.

[0031] By setting the sealing ring 17, this embodiment can effectively ensure the airtightness of the inner cavity 11 of the base during the air extraction operation, thereby improving the stability of the outer shell 10 when it is adsorbed and fixed.

[0032] Example 4, as Figures 2 to 4 As shown, the difference between this embodiment four and embodiment two is that each positioning block 3 is screwed and fastened to the upper surface of the base panel 15.

[0033] Example 5, as Figure 3 As shown, the difference between this fifth embodiment and the first embodiment is that each suction hole 12 is fitted with a corrugated vacuum nozzle 5.

[0034] In this embodiment five, when the outer shell laser engraving positioning fixture adsorbs and fixes the outer shell 10, this embodiment five uses the corrugated vacuum nozzle 5 to adsorb and fix the outer shell 10.

[0035] Example 6, as Figure 2 and Figure 3 As shown, the difference between this sixth embodiment and the first embodiment is that: the fixture base 1 is provided with a number of sequentially spaced contour mold cores 13, and the contour curved surface 131 of each contour mold core 13 has an air suction hole 12, and the fixture cover plate 4 is provided with a cover plate clearance through hole 42 corresponding to each contour mold core 13.

[0036] The outer shell laser engraving positioning fixture of this embodiment six has multiple contour mold cores 13, that is, this embodiment six can realize the positioning of multiple outer shell parts 10 at one time, so as to improve the positioning and clamping efficiency of the outer shell parts 10, and thus improve the efficiency of laser engraving processing.

[0037] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A laser-engraved positioning fixture for an outer casing, comprising a fixture base (1), the fixture base (1) having an inner cavity (11) inside, a pipe connector (2) connected to the inner cavity (11) and used for connecting a negative pressure device on the outer surface of the fixture base (1), and a plurality of suction holes (12) connected to the inner cavity (11) respectively on the upper surface of the fixture base (1). Its features are: The upper surface of the fixture base (1) is provided with a contour mold core (13), the upper surface of the contour mold core (13) is a contour curved surface (131), and several air suction holes (12) are located on the contour curved surface (131) of the contour mold core (13). The fixture base (1) is equipped with positioning blocks (3) on both sides directly opposite to the mold core (13), and each positioning block (3) is equipped with a cover plate positioning pin (31) protruding from the upper surface of the corresponding positioning block (3). The laser-engraved positioning fixture for the outer shell is equipped with a fixture cover plate (4). The fixture cover plate (4) has vertical through-holes (41) corresponding to each cover plate positioning pin (31). The fixture cover plate (4) has vertical through-holes (42) that are adapted to the outline shape of the outer shell (10). When the laser-engraved positioning fixture positions the outer shell (10), the fixture cover plate (4) is placed on the upper surface of each positioning block (3), and each cover plate positioning pin (31) is inserted into the corresponding cover plate positioning hole (41). The lower edge of the cover plate clearance hole (42) of the fixture cover plate (4) abuts against the retaining wall surface (101) of the outer shell (10).

2. The laser engraving positioning fixture for a housing component according to claim 1, characterized in that: The fixture base (1) includes a base plate (14) and a base panel (15) screwed onto the upper surface of the base plate (14). The inner cavity (11) of the base is formed by the base plate (14) and the base panel (15). The pipe joint (2) is installed on the base plate (14) or the base panel (15). The contour mold core (13) is disposed on the upper surface of the base panel (15).

3. The laser engraving positioning fixture for a housing component according to claim 2, characterized in that: A rubber ring groove (16) is formed between the base plate (14) and the base panel (15) and surrounds the outer periphery of the inner cavity (11) of the base. A sealing rubber ring (17) in the shape of a full circle is embedded in the rubber ring groove (16) and the sealing rubber ring (17) is fastened between the base plate (14) and the base panel (15).

4. The laser engraving positioning fixture for a housing component according to claim 2, characterized in that: Each of the positioning blocks (3) is screwed and fastened to the upper surface of the base panel (15).

5. A laser engraving positioning fixture for a housing component according to claim 1, characterized in that: Each of the aforementioned air intake holes (12) is fitted with a corrugated vacuum nozzle (5).

6. The laser engraving positioning fixture for a housing component according to claim 1, characterized in that: The fixture base (1) is provided with a number of sequentially spaced contour mold cores (13), and each contour mold core (13) has a contour curved surface (131) with an air intake hole (12). The fixture cover plate (4) is provided with a cover plate clearance hole (42) corresponding to each contour mold core (13).

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