Fixing device for polishing and grinding operation

Abstract

The utility model discloses a fixing device for polishing and grinding operation, which comprises a fixing support, a plurality of fixing rods and a plurality of fixing rods, wherein each side wall comprises a plurality of through holes; a built-in airbag including a plurality of airbag protrusions; a fixed bottom plate; when polishing and grinding operation is needed, after the built-in air bag is inflated, the mobile phone shell is fixed by the air bag protruding part; and when the polishing and grinding operation is completed, deflating treatment is carried out. Compared with the prior art, the mobile phone shell polishing device has the advantages that the side wall of the mobile phone shell is fixed through the air bag protruding part, the flatness of the surface of the polished mobile phone shell is guaranteed, indentations caused by pressing do not exist, polishing boundaries do not exist, repeated disassembly and assembly are not needed, the working procedure is simple, the mobile phone shell can be fixed through one-time inflation, and the mobile phone shell can be disassembled through one-time deflation; and mounting and dismounting are more convenient.

Description

Technical Field

[0001] The utility model relates to the field of polishing and grinding, in particular to a fixing device for polishing and grinding operations. Background Art

[0002] Mobile phones have various appearances, and the polishing of mobile phone cases has always been an important link. If the polishing is not in place, it may affect the appearance quality and life of the mobile phone. As a consumer product, whether the mobile phone case has a good appearance after polishing directly affects the user experience.

[0003] At present, when a mobile phone case is polished and ground, the first method for fixing the mobile phone case is to manually press the mobile phone case and use sandpaper, a polishing machine, etc. for grinding and polishing. This method cannot fix the mobile phone case, and thus cannot ensure the flatness of the surface of the mobile phone case after polishing.

[0004] The second method of fixing the mobile phone case: Figure 1 As shown, after the mobile phone case 2 is pressed by a fixing fixture 4, it is polished by a polishing machine 1. First, this method produces an indentation at the pressing location. Second, there is an obvious polishing boundary between the pressing area and the polishing area, which affects the beauty of the entire surface. Third, it is necessary to first fix the pressing area, polish the polishing area, and then fix the polishing area and polish the pressing area, which requires multiple disassembly and assembly, and the process is cumbersome. Utility Model Content

[0005] The purpose of the utility model is to solve the defects of the prior art.

[0006] To achieve the above-mentioned purpose, the utility model discloses a fixing device for polishing and grinding operations, comprising: a fixing bracket, which is a square shell in shape, comprising four side walls and a top wall, wherein the top wall is relatively open, and each of the side walls comprises a plurality of through holes; a built-in airbag, comprising an internally connected airbag body and a plurality of airbag protrusions, wherein the airbag body is adapted to be installed inside the fixing bracket, and each of the airbag protrusions is adapted to be installed in each of the through holes of the fixing bracket; a fixing bottom plate, which is fixedly connected to one side of the opening of the fixing bracket; wherein the fixing device is fixedly installed on the installation of the bottom of the polishing machine through the fixing bottom plate The upper surface of the seat; when polishing and grinding operations are required, the interior of the mobile phone case is sleeved with the upper part of the fixing bracket, and after the built-in airbag is inflated, the protrusion of the airbag protrudes from each of the through holes of the fixing bracket and is pressed against the side wall inside the mobile phone case. After the mobile phone case is fixed by the protrusion of the airbag, the polishing head of the polishing machine polishes and grinds the outer surface of the mobile phone case; when the polishing and grinding operations are completed, after the polishing head of the polishing machine is removed from above the mobile phone case, the built-in airbag is deflated, the protrusion of the airbag no longer presses against the side wall inside the mobile phone case, and the mobile phone case is removed from the upper part of the fixing bracket.

[0007] In a possible implementation, the four side walls of the fixing bracket are provided with a plurality of through holes, each of the through holes passes through an airbag protrusion, and when the built-in airbag is inflated, each of the airbag protrusions presses the side wall inside the mobile phone case to limit the movement of the mobile phone case in a direction perpendicular to the side wall.

[0008] In a possible implementation, a first through hole and a second through hole are provided on a first side wall of the fixed bracket, a first airbag protrusion passes through the first through hole, and the first airbag protrusion presses the first supporting part inside the mobile phone shell after being inflated, and a second airbag protrusion passes through the second through hole, and the second airbag protrusion presses the second supporting part inside the mobile phone shell after being inflated; a third through hole is provided on the second side wall of the fixed bracket, a third airbag protrusion passes through the third through hole, and the third airbag protrusion presses the third supporting part inside the mobile phone shell after being inflated; a fourth through hole and a fifth through hole are provided on the third side wall of the fixed bracket, a fourth airbag protrusion passes through the fourth through hole, and the fourth airbag protrusion presses the fourth supporting part inside the mobile phone shell after being inflated, a fifth airbag protrusion passes through the fifth through hole, and the fifth airbag protrusion presses the fifth supporting part inside the mobile phone shell after being inflated; a sixth through hole is provided on the second side wall of the fixed bracket, a sixth airbag protrusion passes through the sixth through hole, and the sixth airbag protrusion presses the sixth supporting part inside the mobile phone shell after being inflated.

[0009] In a possible implementation, the fixing device further includes: an air supply device, which is in communication with the built-in airbag and is used to supply air to the built-in airbag.

[0010] In a possible implementation, the built-in airbag is provided with an air inlet, and the air inlet is communicated with an air outlet of the air supply device.

[0011] In a possible implementation, the fixing device further includes: a pressure gauge connected to the air outlet of the air supply device to detect the air pressure in the built-in airbag to prevent the air pressure in the built-in airbag from being too high.

[0012] In a possible implementation, the fixing base plate is connected to one side of the opening of the fixing bracket by welding to make the fixing device more secure.

[0013] In a possible implementation, the fixed base plate is screwed to one side of the opening of the fixed bracket, and the fixed base plate and the fixed bracket are detachable to replace the built-in airbag.

[0014] In a possible implementation, the fixed base plate is provided with a threaded hole, and the open side of the fixed bracket is provided with a screw-in hole. The screw passes through the screw-in hole and is tightened into the threaded hole, thereby achieving a screw-in connection between the fixed base plate and the open side of the fixed bracket.

[0015] In a possible implementation, the fixed base plate is provided with a fixing hole, and the screw passes through the fixing hole and is tightened to the upper surface of the mounting seat at the bottom of the polishing machine, so that the fixing device is fixedly installed on the upper surface of the mounting seat at the bottom of the polishing machine through the fixed base plate.

[0016] The advantages of the utility model are: compared with the first method of fixing the mobile phone shell by manually pressing the mobile phone shell, the utility model fixes the side wall of the mobile phone shell by the airbag protrusion of the built-in airbag, and when polishing and grinding, the mobile phone shell can be prevented from moving under the drive of the polishing head, thereby ensuring the flatness of the surface of the mobile phone shell after polishing. Compared with the second method of fixing the mobile phone shell by using a fixing fixture to press the mobile phone shell, first, the utility model fixes the side wall of the mobile phone shell by the airbag protrusion of the built-in airbag, and the back of the outside of the mobile phone shell is processed as a whole, so there is no indentation on the back of the outside of the mobile phone shell caused by pressing. Second, the back of the outside of the mobile phone shell is processed as a whole, and there is no obvious grinding boundary between the pressing area and the polishing area, which does not affect the beauty of the entire polished surface. Third, the entire back of the outside of the mobile phone shell can be processed by one inflation, and multiple disassembly and assembly are not required, and the process is simple. Fourth, the mobile phone shell can be fixed by one inflation, and the mobile phone shell can be removed by one deflation, which is more convenient for installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of fixing a mobile phone case using a fixing fixture in an existing technical solution;

[0019] Figure 2 It is a schematic diagram of the composition of a fixing device for polishing and grinding operations in an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of a polishing and grinding operation using a fixing device in an embodiment of the utility model;

[0021] Figure 4 A schematic diagram of an external viewing angle of a mobile phone case in an embodiment of the utility model;

[0022] Figure 5 A schematic diagram of the internal perspective of a mobile phone case in an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the oblique view of a fixing device for polishing and grinding operations in an embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of a cross-sectional view of a screw connection between a fixed base plate and a fixed bracket in an embodiment of the utility model;

[0025] Figure 8 It is a schematic diagram of a cross-sectional view of the welding connection between the fixed base plate and the fixed bracket in an embodiment of the utility model.

[0026] Figure markings: 1 polishing machine; 101 polishing head; 102 mounting base; 2 mobile phone case; 3 fixing device; 301 fixing bracket; 302 built-in airbag; 303 fixing base plate; 304 fixing hole; 305 air supply device; 306 screw; a1 first supporting part; a2 second supporting part; a3 third supporting part; a4 fourth supporting part; a5 fifth supporting part; a6 sixth supporting part; b1 first airbag protrusion; b2 second airbag protrusion; b3 third airbag protrusion; b4 fourth airbag protrusion; b5 fifth airbag protrusion; b6 sixth airbag protrusion. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 2 As shown, the utility model provides a fixing device for polishing and grinding operations, comprising:

[0029] The fixing bracket 301 has a square shell shape, including four side walls and a top wall. The top wall is open at a relative position, and each of the side walls includes a plurality of through holes.

[0030] The built-in airbag 302 includes an internally connected airbag body and a plurality of airbag protrusions. The airbag body is adapted to be installed inside the fixing bracket 301 , and each of the airbag protrusions is adapted to be installed in each of the through holes of the fixing bracket 301 .

[0031] The fixed bottom plate 303 is fixedly connected to one side of the opening of the fixed bracket 301 .

[0032] like Figure 3 As shown, before the polishing and grinding operation, the fixing device 3 of the utility model is fixedly mounted on the upper surface of the mounting seat 102 at the bottom of the polishing machine 1 through the fixing base plate 303 .

[0033] For example, Figure 4 As shown, the surface of the mobile phone case to be polished is the back side of the exterior of the mobile phone case 2 .

[0034] like Figure 5 As shown, during the polishing operation, the four side walls inside the mobile phone shell 2 are fixed to prevent the mobile phone shell 2 from being deformed along the Figure 5 The front surface of the interior of the mobile phone shell 2 and the upper surface of the fixing bracket 301 are tightly fitted under the action of the grinding force to prevent the mobile phone shell from moving up and down.

[0035] When polishing and grinding operations are required, the interior of the mobile phone case 2 is sleeved on the upper part of the fixing bracket 301. After the built-in airbag 302 is inflated, the airbag protrusion protrudes from each through hole of the fixing bracket 301 and is pressed against the side wall inside the mobile phone case 2. After the mobile phone case 2 is fixed by the airbag protrusion, the polishing head 101 of the polishing machine 1 polishes and grinds the external surface of the mobile phone case 2.

[0036] When the polishing and grinding operation is completed, the polishing head 101 of the polishing machine 1 is removed from above the mobile phone case 2, the built-in airbag 302 is deflated, the protruding part of the airbag no longer presses the side wall inside the mobile phone case 2, and the mobile phone case 2 is removed from the upper part of the fixed bracket 301.

[0037] In one possible implementation, Figure 6 As shown, the four side walls of the fixing bracket 301 are each provided with a plurality of through holes, and each of the through holes passes through an airbag protrusion. Figure 6 As shown, an airbag protrusion b6 passes through the upper through-hole, and an airbag protrusion b3 passes through the lower through-hole.

[0038] like Figure 6 As shown, when the built-in airbag 302 is inflated, each of the airbag protrusions presses against the side wall inside the mobile phone case 2 to limit the movement of the mobile phone case 2 in a direction perpendicular to the side wall. Figure 6 The airbag protrusion b6 on the upper side is shown to press the sixth supporting portion a6 inside the mobile phone case 2, and the airbag protrusion b3 on the lower side is shown to press the sixth supporting portion a3 inside the mobile phone case 2.

[0039] In one possible implementation, Figure 6As shown, a first through hole and a second through hole are provided on the first side wall of the fixing bracket 301, and a first airbag protrusion b1 passes through the first through hole, and the first airbag protrusion b1 presses the first supporting portion a1 inside the mobile phone case 2 after being inflated; a second airbag protrusion b2 passes through the second through hole, and the second airbag protrusion b2 presses the second supporting portion a2 inside the mobile phone case 2 after being inflated.

[0040] A third through hole is disposed on the second side wall of the fixing bracket 301 , and a third airbag protrusion b3 passes through the third through hole. The third airbag protrusion b3 presses the third supporting portion a3 inside the mobile phone shell 2 after being inflated.

[0041] A fourth through hole and a fifth through hole are provided on the third side wall of the fixing bracket 301, and a fourth airbag protrusion b4 passes through the fourth through hole. After the fourth airbag protrusion b4 is inflated, it presses the fourth supporting portion a4 inside the mobile phone case 2, and a fifth airbag protrusion b5 passes through the fifth through hole. After the fifth airbag protrusion b5 is inflated, it presses the fifth supporting portion a5 inside the mobile phone case 2.

[0042] A sixth through hole is disposed on the second side wall of the fixing bracket 301 , and a sixth airbag protrusion b6 passes through the sixth through hole. After the sixth airbag protrusion b6 is inflated, it presses the sixth supporting portion a6 inside the mobile phone shell 2 .

[0043] In one possible implementation, Figure 6 As shown, the fixed base plate 303 is provided with a fixing hole 304, and the screw passes through the fixing hole 304 and is tightened to the upper surface of the mounting seat 102 at the bottom of the polishing machine 1, so that the fixing device 3 is fixedly installed on the upper surface of the mounting seat 102 at the bottom of the polishing machine 1 through the fixed base plate 303.

[0044] In one possible implementation, Figure 7 As shown, the fixing device further includes: an air supply device 305 , which is in communication with the built-in airbag 302 and is used to supply air to the built-in airbag 302 .

[0045] In one possible implementation, Figure 7 As shown, the built-in airbag 302 is provided with an air inlet, and the air inlet is connected to the air outlet of the air supply device 305.

[0046] In one possible implementation, Figure 7 As shown, the fixing device further includes: a pressure gauge, which is connected to the air outlet of the air supply device 305 to detect the air pressure in the built-in airbag 302 to prevent the air pressure in the built-in airbag 302 from being too high. Common air path components such as a throttle valve, a relief valve, a three-way valve, and a four-way valve can also be provided.

[0047] In one possible implementation, Figure 7 As shown, the fixed base plate 303 is screwed to one side of the opening of the fixed bracket 301 , and the fixed base plate 303 and the fixed bracket 301 are detachable to replace the built-in airbag 302 .

[0048] In one possible implementation, Figure 7 As shown, the fixed base plate 303 is provided with a threaded hole, and the open side of the fixed bracket 301 is provided with a screw-through hole. The screw 306 passes through the screw-through hole and is tightened into the threaded hole, thereby realizing a screw connection between the fixed base plate 303 and the open side of the fixed bracket 301.

[0049] In one possible implementation, Figure 8 As shown, the fixing base plate 303 is welded to the opening side of the fixing bracket 301 to make the fixing device more secure. The weld position of the welding connection can be as follows: Figure 8 As shown at c.

[0050] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the application disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope of the present invention is indicated by the claims.

[0051] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

[0052] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above are only specific implementation methods of the utility model and are not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A fixing device for polishing and grinding operations, characterized in that: include: The fixed bracket (301) has a square shell shape and includes four side walls and a top wall, the top wall is open at a relative position, and each of the side walls includes a plurality of through holes; A built-in airbag (302) comprising an internally connected airbag body and a plurality of airbag protrusions, the airbag body being adapted to be installed inside the fixing bracket (301), and each of the airbag protrusions being adapted to be installed in each of the through holes of the fixing bracket (301); A fixed bottom plate (303) fixedly connected to one side of the opening of the fixed bracket (301); Wherein, the fixing device (3) is fixedly mounted on the upper surface of the mounting seat (102) at the bottom of the polishing machine (1) through the fixing base plate (303); When polishing and grinding operations are required, the interior of the mobile phone shell (2) is sleeved with the upper part of the fixing bracket (301), and after the built-in airbag (302) is inflated, the protrusion of the airbag protrudes from each through hole of the fixing bracket (301) and is pressed against the side wall inside the mobile phone shell (2), and after the mobile phone shell (2) is fixed by the protrusion of the airbag, the polishing head (101) of the polishing machine (1) polishes and grinds the outer surface of the mobile phone shell (2); When the polishing and grinding operation is completed, the polishing head (101) of the polishing machine (1) is removed from above the mobile phone shell (2), the built-in airbag (302) is deflated, the protruding part of the airbag no longer presses the inner side wall of the mobile phone shell (2), and the mobile phone shell (2) is removed from the upper part of the fixing bracket (301).

2. The fixing device according to claim 1, characterized in that: The four side walls of the fixing bracket (301) are each provided with a plurality of through holes, each of the through holes having an airbag protrusion passing therethrough, and when the built-in airbag (302) is inflated, each of the airbag protrusions presses against the inner side wall of the mobile phone case (2) to limit the movement of the mobile phone case (2) in a direction perpendicular to the side wall.

3. The fixing device according to claim 2, characterized in that: A first through hole and a second through hole are provided on a first side wall of the fixing bracket (301); a first airbag protrusion (b1) passes through the first through hole; the first airbag protrusion (b1) presses the first support portion (a1) inside the mobile phone shell (2) after being inflated; a second airbag protrusion (b2) passes through the second through hole; the second airbag protrusion (b2) presses the second support portion (a2) inside the mobile phone shell (2) after being inflated; A third through hole is provided on the second side wall of the fixing bracket (301), a third airbag protrusion (b3) passes through the third through hole, and the third airbag protrusion (b3) presses the third support portion (a3) ​​inside the mobile phone shell (2) after being inflated; A fourth through hole and a fifth through hole are provided on the third side wall of the fixing bracket (301); a fourth airbag protrusion (b4) passes through the fourth through hole; the fourth airbag protrusion (b4) presses the fourth support portion (a4) inside the mobile phone shell (2) after being inflated; a fifth airbag protrusion (b5) passes through the fifth through hole; the fifth airbag protrusion (b5) presses the fifth support portion (a5) inside the mobile phone shell (2) after being inflated; A sixth through hole is provided on the second side wall of the fixing bracket (301), and a sixth airbag protrusion (b6) passes through the sixth through hole. After the sixth airbag protrusion (b6) is inflated, it presses the sixth supporting part (a6) inside the mobile phone shell (2).

4. The fixing device according to claim 1, characterized in that: The fixing device further comprises: an air supply device, which is in communication with the built-in air bag (302) and is used to supply air to the built-in air bag (302).

5. The fixing device according to claim 4, characterized in that: The built-in air bag (302) is provided with an air inlet, and the air inlet is connected to the air outlet of the air supply device.

6. The fixing device according to claim 4, characterized in that: The fixing device further comprises: a pressure gauge connected to the air outlet of the air supply device to detect the air pressure in the built-in air bag (302) to prevent the air pressure in the built-in air bag (302) from being too high.

7. The fixing device according to claim 1, characterized in that: The fixed bottom plate (303) is welded to one side of the opening of the fixed bracket (301) to make the fixing device more secure.

8. The fixing device according to claim 1, characterized in that: The fixed bottom plate (303) is screw-connected to one side of the opening of the fixed bracket (301), and the fixed bottom plate (303) and the fixed bracket (301) are detachable to replace the built-in airbag (302).

9. The fixing device according to claim 8, characterized in that: The fixed base plate (303) is provided with a threaded hole, and the open side of the fixed bracket (301) is provided with a screw-through hole. The screw passes through the screw-through hole and is tightened into the threaded hole, thereby achieving a screw-connected connection between the fixed base plate (303) and the open side of the fixed bracket (301).

10. The fixing device according to claim 1, characterized in that: The fixed base plate (303) is provided with a fixing hole (304), and a screw is passed through the fixing hole (304) and then tightened onto the upper surface of the mounting seat (102) at the bottom of the polishing machine (1), thereby achieving that the fixing device (3) is fixedly mounted on the upper surface of the mounting seat (102) at the bottom of the polishing machine (1) through the fixed base plate (303).

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