A fixed base for backboard machining precision detection

Abstract

The utility model provides a fixed base for backboard processing precision detects relates to cell -phone backboard detection technical field, including bottom plate, the top near both side edges of bottom plate place all fixed rotation air cylinder, the top of bottom plate top between opposite side of two rotation air cylinder is provided with the placement platform, the bottom of placement platform is fixed in four corner all, the bottom of multiple support platform all is fixed in the bottom plate top, the top of placement platform places backboard body, the bottom of backboard body and the top of placement platform mutually fits, the utility model discloses, places backboard body on the top of placement platform, through the spacing magnetic stripe to its spacing, and the bottom of backboard body and the top of placement platform mutually fits, then through rotation air cylinder drive the pressing plate to carry out the compression fixed of backboard body both ends, through the contact of the excellent forceful glue pressure strip and backboard body when compression, can prevent the backboard body outer surface bruise.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone back panel testing technology, and in particular to a fixed base for testing the processing accuracy of back panels. Background Technology

[0002] A mobile phone back panel is the cover plate on the back of a mobile phone casing. Its function is to protect the internal components of the phone and also to provide an aesthetically pleasing appearance. When manufacturing mobile phone back panels, precision testing equipment is required to test the processing precision of its outer surface.

[0003] Currently, when using probes to perform precision testing on the outer surface of a mobile phone back panel, the back panel is usually fixed with grippers. However, since the back panel has a large area, the grippers can only hold the ends of the back panel, leaving the middle part of the back panel suspended. This causes a large elastic floating distance when the precision testing device detects the middle part of the back panel, resulting in inaccurate detection. Utility Model Content

[0004] In order to solve the problems of the prior art, this utility model provides a fixed base for detecting the processing accuracy of a backplate.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A fixed base for backplate processing accuracy testing includes a base plate, with rotary cylinders fixed at the top of the base plate near both sides. A placement platform is provided above the top of the base plate between the opposite sides of the two rotary cylinders. Supports are fixed at the four corners of the bottom of the placement platform. The bottoms of the multiple supports are fixed to the top of the base plate. The backplate body is placed on the top of the placement platform, and the bottom of the backplate body is in contact with the top of the placement platform.

[0006] Optionally, a scale strip is provided on the front side of the placement platform near both sides of the edge, and a marking line is provided on the front side of the placement platform at one end of the scale strip.

[0007] Optionally, the top of the placement platform is provided with limiting magnetic strips near both sides, the back plate body is located between the opposite sides of the two limiting magnetic strips, and the outer surfaces of both sides of the back plate body are in contact with the outer surfaces of the limiting magnetic strips.

[0008] Optionally, a pressure plate is fixed to the top of the output shaft of the rotary cylinder, and an urethane strip is fixed to the bottom of the pressure plate near one side edge.

[0009] Optionally, a fixing sleeve is installed on the outer surface of the output shaft of the rotary cylinder. The bottom of the fixing sleeve is open, and an annular limiting groove is provided on the inner wall of the fixing sleeve.

[0010] Optionally, a contact ring is provided between the inner walls of the fixed sleeve, the inner wall of the contact ring is in contact with the outer surface of the output shaft of the rotary cylinder, and the bottom of the contact ring slides to the bottom of the fixed sleeve.

[0011] Optionally, a limiting ring is fixed on the outer surface of the contact collar near the top edge. The limiting ring slides between the inner walls of the annular limiting groove. A buffer spring is fixed on the top of the contact collar, and the top of the buffer spring is fixed on the inner top surface of the fixed sleeve.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art. Of course, any product implementing this utility model does not necessarily need to achieve all of the following advantages at the same time: 1. In this utility model, when testing the back panel body, the limiting magnetic strip is first adjusted to the same position as the length of the back panel body according to the corresponding scale strip, and then it is attracted to the top of the placement platform. Next, the back panel body is placed on the top of the placement platform and limited by the limiting magnetic strip. The bottom of the back panel body is in contact with the top of the placement platform. Then, the pressure plate is driven by the rotating cylinder to press and fix the two ends of the back panel body. During the pressing, the urethane strip contacts the back panel body, which can prevent the outer surface of the back panel body from being damaged.

[0013] 2. In this utility model, when the rotary cylinder is working, it will drive the pressure plate to rotate at a certain angle and then retract downward. When retracting downward, it is buffered by the buffer spring on the contact collar. During the buffering, the elastic force of the buffer spring can gradually buffer and reduce the adsorption force on the internal piston when the rotary cylinder retracts, so as to prevent the rotary cylinder from stopping instantly after retraction and generating a large impact on the back plate body, which would cause the back plate body to change position. Attached Figure Description

[0014] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This utility model provides a front-view three-dimensional structural diagram of a fixed base for detecting the processing accuracy of a backplate; Figure 2 This utility model provides a side-view three-dimensional structural diagram of a fixed base for detecting the processing accuracy of a backplate; Figure 3 This utility model provides a partial cross-sectional three-dimensional structural diagram of a fixed base for detecting the processing accuracy of a backplate; Figure 4 This utility model Figure 3 A magnified view of point A in the middle.

[0015] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Support; 3. Rotary cylinder; 4. Placement platform; 5. Back plate body; 6. Limiting magnetic strip; 7. Scale strip; 8. Marking line; 9. Pressure plate; 10. Polyurethane pressure strip; 11. Fixing sleeve; 12. Annular limiting groove; 13. Contact collar; 14. Buffer spring; 15. Limiting ring.

[0016] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Example 1, such as Figure 1-4 As shown, this utility model provides a fixed base for detecting the processing accuracy of a backplate: it includes a base plate 1, with rotary cylinders 3 fixed at the top of the base plate 1 near both sides, a placement platform 4 located between the opposite sides of the two rotary cylinders 3 on the top of the base plate 1, and supports 2 fixed at the four corners of the bottom of the placement platform 4. The bottoms of the multiple supports 2 are fixed to the top of the base plate 1, and a backplate body 5 is placed on the top of the placement platform 4, with the bottom of the backplate body 5 fitting against the top of the placement platform 4.

[0019] The effect achieved by the entire embodiment 1 is as follows: when testing the back panel body 5, the limiting magnetic strip 6 is first adjusted to the same position as the length of the back panel body 5 according to the corresponding scale strip 7, and then it is attached to the top of the placement platform 4. Next, the back panel body 5 is placed on the top of the placement platform 4 and limited by the limiting magnetic strip 6. The bottom of the back panel body 5 is in contact with the top of the placement platform 4. Then, the rotating cylinder 3 drives the pressure plate 9 to press and fix the two ends of the back panel body 5. During the pressing, the urethane strip 10 contacts the back panel body 5, which can prevent the outer surface of the back panel body 5 from being damaged.

[0020] Example 2, as Figure 1-4As shown, the front side of the placement platform 4 is provided with scale strips 7 near both sides, and the front side of the placement platform 4 is provided with marking lines 8 at one end of the scale strips 7. Limiting magnetic strips 6 are provided on the top of the placement platform 4 near both sides. The back plate body 5 is located between the two limiting magnetic strips 6 on opposite sides, and the outer surfaces of both sides of the back plate body 5 are in contact with the outer surfaces of the limiting magnetic strips 6. A pressure plate 9 is fixed to the top of the output shaft of the rotary cylinder 3, and a urethane strip 10 is fixed to the bottom of the pressure plate 9 near one side edge. A fixing sleeve 11 is installed on the outer surface of the output shaft of the rotary cylinder 3. The bottom of the fixed sleeve 11 is open, and an annular limiting groove 12 is provided on the inner wall of the fixed sleeve 11. A contact ring 13 is provided between the inner walls of the fixed sleeve 11. The inner wall of the contact ring 13 is in contact with the outer surface of the output shaft of the rotary cylinder 3. The bottom of the contact ring 13 slides to the bottom of the fixed sleeve 11. A limiting ring 15 is fixed on the outer surface of the contact ring 13 near the top edge. The limiting ring 15 slides between the inner walls of the annular limiting groove 12. A buffer spring 14 is fixed on the top of the contact ring 13. The top of the buffer spring 14 is fixed on the inner top surface of the fixed sleeve 11.

[0021] The effect achieved by the entire embodiment 2 is that when the rotary cylinder 3 is working, it will drive the pressure plate 9 to rotate at a certain angle and then retract downward. When retracting downward, it is buffered by the buffer spring 14 on the contact collar 13. During the buffering, the elastic force of the buffer spring 14 can gradually buffer and reduce the adsorption force of the rotary cylinder 3 on the internal piston when it retracts, preventing the rotary cylinder 3 from stopping instantly after retraction and generating a large impact on the back plate body 5, which would cause the position of the back plate body 5 to change.

[0022] Working principle: When testing the backplate body 5, firstly, the limiting magnetic strip 6 is adjusted to the same position as the length of the backplate body 5 according to the corresponding scale strip 7, and then it is attracted to the top of the placement platform 4. Next, the backplate body 5 is placed on the top of the placement platform 4 and limited by the limiting magnetic strip 6. The bottom of the backplate body 5 is in contact with the top of the placement platform 4. Then, the rotating cylinder 3 drives the pressure plate 9 to press and fix the two ends of the backplate body 5. During the pressing, the urethane strip 10 contacts the backplate body 5 to prevent damage to the outer surface of the backplate body 5. When the rotating cylinder 3 is working, it will drive the pressure plate 9 to rotate a certain angle and then retract downward. During the downward retraction, the buffer spring 14 on the contact collar 13 will buffer the force. During the buffering, the elastic force of the buffer spring 14 can gradually reduce the attraction force of the rotating cylinder 3 on the internal piston when it retracts, preventing the rotating cylinder 3 from stopping abruptly after retraction and generating a large impact on the backplate body 5, which would cause the position of the backplate body 5 to change.

[0023] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A fixed base for detecting the machining accuracy of a backplate, comprising a base plate (1), characterized in that: Rotary cylinders (3) are fixed at the top of the base plate (1) near the two side edges. A placement platform (4) is set above the top of the base plate (1) between the opposite sides of the two rotary cylinders (3). Supports (2) are fixed at the four corners of the bottom of the placement platform (4). The bottoms of the multiple supports (2) are fixed to the top of the base plate (1). A back plate body (5) is placed on the top of the placement platform (4). The bottom of the back plate body (5) is in contact with the top of the placement platform (4).

2. The fixed base for detecting the machining accuracy of a backplate according to claim 1, characterized in that: The front side of the placement platform (4) is provided with scale strips (7) near the two side edges, and the front side of the placement platform (4) is provided with marking lines (8) at one end of the scale strips (7).

3. The fixed base for detecting the machining accuracy of a backplate according to claim 1, characterized in that: The top of the placement platform (4) is provided with limiting magnetic strips (6) near both sides. The back plate body (5) is located between the two limiting magnetic strips (6) on opposite sides, and the outer surfaces of both sides of the back plate body (5) are in contact with the outer surfaces of the limiting magnetic strips (6).

4. A fixed base for detecting the machining accuracy of a backplate according to claim 1, characterized in that: A pressure plate (9) is fixed to the top of the output shaft of the rotary cylinder (3), and an urethane strip (10) is fixed to the bottom of the pressure plate (9) near one side edge.

5. A fixed base for detecting the machining accuracy of a backplate according to claim 1, characterized in that: A fixed sleeve (11) is installed on the outer surface of the output shaft of the rotary cylinder (3). The bottom of the fixed sleeve (11) is open, and an annular limiting groove (12) is provided on the inner wall of the fixed sleeve (11).

6. A fixed base for detecting the machining accuracy of a backplate according to claim 5, characterized in that: A contact ring (13) is provided between the inner walls of the fixed sleeve (11). The inner wall of the contact ring (13) is in contact with the outer surface of the output shaft of the rotary cylinder (3). The bottom of the contact ring (13) slides to the bottom of the fixed sleeve (11).

7. A fixed base for detecting the machining accuracy of a backplate according to claim 6, characterized in that: A limiting ring (15) is fixed on the outer surface of the contact collar (13) near the top edge. The limiting ring (15) slides between the inner walls of the annular limiting groove (12). A buffer spring (14) is fixed on the top of the contact collar (13). The top of the buffer spring (14) is fixed on the inner top surface of the fixing sleeve (11).

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