A fast and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals

Abstract

This utility model discloses a quick and precise fixing and masking fixture for spraying glass covers of smart mobile terminals, comprising: a glass pad, a rubber expansion sleeve, and a fixture body; the glass pad supports the glass cover of the smart mobile terminal, with a workpiece placement area above the glass pad, and a first masking area around the outer wall of the smart mobile terminal glass cover; the rubber expansion sleeve includes a first expansion ring surrounding the workpiece placement area, with a first compression deformation area at the position of the inner wall of the first expansion ring directly opposite the workpiece placement area; the fixture body includes a first fixing ring, with the inner side of the first fixing ring surrounding and fitting the outer wall of the first expansion ring, and a recessed first annular air groove at the position of the inner wall of the first fixing ring directly opposite the first compression deformation area; this utility model includes a flexibly switchable outer unlock state and an outer locking state. Compared with the prior art, this utility model can quickly and accurately fix and mask the non-spraying area of ​​the workpiece, and also facilitates the flexible loading and unloading of the workpiece.

Description

Technical Field

[0001] This utility model belongs to the field of glass cover spraying technology for smart mobile terminals, and particularly relates to a fast and precise fixing and masking fixture for glass cover spraying of smart mobile terminals. Background Technology

[0002] The production process of smart mobile terminal glass covers (such as mobile phone back covers) includes a painting process. The core of this process is to enhance the product's user experience and competitiveness in multiple ways: it satisfies aesthetic requirements through rich colors and unique textures, strengthening brand recognition; it improves the glass's scratch and fingerprint resistance through hardened coatings and oleophobic layers; and it reduces the risk of breakage through flexible coatings. Smart mobile terminal glass covers typically have a through-hole for a camera, with both the outer circumferential wall and the inner circumferential wall of the camera hole being non-painted areas. During the painting process, specialized painting fixtures are needed to fix the smart mobile terminal glass cover and mask the non-painted areas.

[0003] In the prior art, Chinese Patent Publication No. CN209081742U discloses a spraying fixture for mobile phone glass. The fixture is suitable for mobile phone glass with a camera hole. It includes a silicone fixture body and a silicone plug. The silicone fixture body has a first groove for placing the mobile phone glass. The silicone fixture body has a stainless steel plate inside. The silicone fixture body has a second groove. The silicone plug engages with the second groove.

[0004] The shortcoming of the existing technology is that the fixture relies on the elasticity of the silicone fixture body and the silicone plug itself to shield the non-coated areas (the outer circumferential wall and the inner circumferential wall of the camera hole) of the mobile phone glass. When the mobile phone glass back cover is installed into the fixture, if the gap between it and the silicone fixture body and the silicone plug is too loose, the non-coated areas will not be completely shielded. If the gap between the mobile phone glass back cover and the silicone fixture body and the silicone plug is too tight, the mobile phone glass back cover is easily damaged when it is installed and removed.

[0005] Therefore, it is necessary to provide a new fast and precise fixing and masking fixture for spraying glass covers of smart mobile terminals to solve the above-mentioned technical problems. Summary of the Invention

[0006] (a) Technical problems to be solved Based on this, the present invention provides a fast and precise fixing and masking fixture for spraying glass cover plates of smart mobile terminals, so as to solve the technical problem that the existing mobile phone glass spraying fixtures cannot simultaneously guarantee the masking effect and flexible loading and unloading.

[0007] (II) Technical Solution To solve the above technical problems, this utility model proposes a rapid and precise fixing and masking fixture for spraying glass covers of intelligent mobile terminals, comprising: a glass pad, a rubber expansion sleeve, and a fixture body; the glass pad is used to support the glass cover of the intelligent mobile terminal, the space above the glass pad for supporting and accommodating the glass cover of the intelligent mobile terminal is set as a workpiece placement area, and the outer circumference of the outer wall of the glass cover of the intelligent mobile terminal is set as a first masking area; the rubber expansion sleeve includes a first rubber expansion ring, which is annular around the workpiece placement area, and the portion of the inner wall of the first rubber expansion ring facing the workpiece placement area is a first compression deformation area; the fixture body includes a first fixing ring, which is annular in shape, and the inner side of the first fixing ring surrounds and fits the outer wall of the first rubber expansion ring, and the inner wall of the first fixing ring is provided with a recessed first annular air groove at the position facing the first compression deformation area; the intelligent mobile terminal... The quick and precise fixing and masking fixture for spraying the end glass cover includes an outer unlocked state and an outer locked state. By introducing or releasing a pressure medium into the first annular air groove, the expansion and deformation of the first compressive deformation zone can be controlled to expand and deform or return to normal, thereby enabling the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover to switch between the outer locked state and the outer unlocked state. When the workpiece placement area is provided with the smart mobile terminal glass cover, and the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover is in the outer locked state: the first compressive deformation zone masks the first masking area, while simultaneously fixing the smart mobile terminal glass cover. When the workpiece placement area is provided with the smart mobile terminal glass cover, and the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover is in the outer unlocked state: the inner wall of the first expansion ring is spaced apart from the first masking area.

[0008] Preferably, the smart mobile terminal glass cover plate further includes a functional component hole passing through it, and the inner wall of the functional component hole is set as a second shielding area; the glass pad plate is provided with a clearance hole passing through it; the rubber expansion sleeve further includes a second rubber expansion ring that is integrally annular, the second rubber expansion ring is located inside the first rubber expansion ring, and the second rubber expansion ring passes through the clearance hole; the fixture body further includes a second fixing boss, the second rubber expansion ring is arranged around and fits the outer wall of the second fixing boss, and the portion of the outer wall of the second rubber expansion ring facing the workpiece placement area is set as a second compression deformation area; the outer wall of the second fixing boss is provided with a recessed second annular air groove at the position facing the second compression deformation area; the quick and precise fixing and shielding fixture for spraying the smart mobile terminal glass cover plate further includes an inner side... The device has two states: a locked state and an inner locked state. By introducing or releasing a pressure medium into the second annular air groove, the expansion and deformation of the second compressive deformation zone can be controlled to return to normal, thereby enabling the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover to switch between the inner unlocked state and the inner locked state. When the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover is in the inner unlocked state, the workpiece placement area is provided with the smart mobile terminal glass cover, and the outer wall of the second expansion ring is spaced apart from the second masking area. When the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover is in the inner locked state, the workpiece placement area is provided with the smart mobile terminal glass cover, and the second compressive deformation zone masks the second masking area.

[0009] Preferably, the pressure medium is air; the fixture body further includes a base, the lower parts of the first fixing ring and the second fixing boss are respectively fixed to the upper part of the base, the fixture body further includes a first branch air passage formed on the base and the first fixing ring and communicating with the first annular air groove; the fixture body further includes a second branch air passage formed on the base and the second fixing boss and communicating with the second annular air groove; the base is also provided with a main air passage that communicates with both the first branch air passage and the second branch air passage.

[0010] Preferably, the upper part of the first expansion ring is provided with a downwardly bent upper fixing skirt. The upper fixing skirt is generally a ring-shaped structure surrounding the outside of the first expansion ring. The quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover also includes an upper pressure plate that is detachably fixed to the upper part of the first fixing ring by a threaded connector. The upper fixing skirt is located between the first fixing ring and the upper pressure plate, and the upper fixing skirt is pressed and fixed to the upper part of the first fixing ring by the upper pressure plate.

[0011] Preferably, the rubber expansion sleeve further includes a first sealing plate connected to the first rubber expansion ring and completely sealing the upper opening of the second rubber expansion ring. The quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover also includes a small pressure plate that is detachably fixed to the upper part of the second fixing boss through a threaded connector. The first sealing plate is located between the second fixing boss and the small pressure plate, and the first sealing plate is pressed and fixed to the upper part of the second fixing boss by the small pressure plate.

[0012] Preferably, the rubber expansion sleeve further includes a second sealing plate, which connects the bottom of the first expansion ring and the bottom of the second expansion ring, and completely seals the gap between the bottom of the first expansion ring and the bottom of the second expansion ring. The first expansion ring, the second expansion ring, and the second sealing plate together form a receiving cavity with an upper opening. The quick and precise fixing and masking fixture for spraying the glass cover of the smart mobile terminal also includes an expansion sleeve pressure plate that is detachably fixed to the upper part of the base by a threaded connector. The second sealing plate is located between the base and the expansion sleeve pressure plate, and the second sealing plate is pressed and fixed to the upper part of the base by the expansion sleeve pressure plate. The expansion sleeve pressure plate is located in the receiving cavity, and the shape of the expansion sleeve pressure plate matches the shape of the second sealing plate. The expansion sleeve pressure plate and the second sealing plate are aligned vertically. The glass pad is fixed to the upper part of the expansion sleeve pressure plate.

[0013] Preferably, the upper fixed skirt, the first expansion ring, the second sealing plate, the second expansion ring, and the first sealing plate are integrally injection molded.

[0014] Preferably, the upper part of the first fixing ring is stepped, with the inner ring higher and the outer ring lower; the upper inner ring of the first fixing ring is provided with a recessed annular sealing groove, and a first sealing ring is provided in the annular sealing groove; the upper part of the upper fixing skirt completely covers the annular sealing groove, and the lower part of the upper fixing skirt covers the outer wall of the inner ring of the first fixing ring; the lower part of the upper pressure plate is stepped and cooperates with the upper part of the first fixing ring; the outer ring of the upper pressure plate is fixedly connected to the first fixing ring through a threaded connector, so as to realize the inner ring of the upper pressure plate press-fitting and fixing the upper fixing skirt.

[0015] Preferably, the quick and precise fixing and masking fixture for spraying the glass cover of the smart mobile terminal further includes a pusher hole that passes through the base, the second sealing plate, the expansion sleeve pressure plate, and the glass pad. A pusher rod is slidably connected in the pusher hole. The top of the pusher rod is provided with a pusher block for pushing the smart mobile terminal glass cover above the workpiece placement area. The lower part of the pusher rod is provided with a telescopic power component for driving the pusher rod to rise and fall. The quick and precise fixing and masking fixture for spraying the glass cover of the smart mobile terminal further includes a second sealing ring located on the upper part of the base and surrounding the pusher hole. The top of the second fixing boss is provided with a screw connection hole. The quick and precise fixing and masking fixture for spraying the glass cover of the smart mobile terminal further includes a third sealing ring located on the top of the second fixing boss and surrounding the screw connection hole.

[0016] Preferably, the quick and precise fixing and masking fixture for spraying the glass cover of the intelligent mobile terminal also includes a vacuum pressure integrated machine connected to the main air passage. The vacuum pressure integrated machine introduces or releases pressure medium into the first annular air groove and the second annular air groove through the main air passage.

[0017] (III) Beneficial Effects Compared with existing technologies, the quick and precise fixing and masking fixture for spraying glass covers of intelligent mobile terminals of this utility model has the following beneficial effects: (1) With this utility model, when loading and unloading workpieces, there is a gap between the glass cover of the intelligent mobile terminal and the first rubber expansion ring, which can make loading and unloading easy and ensure that the glass cover of the intelligent mobile terminal is not damaged.

[0018] (2) When the workpiece is sprayed, the first expansion ring of the elastic material is used to fix the glass cover of the smart mobile terminal and cover the outer wall of the glass cover of the smart mobile terminal. The first expansion ring of the elastic material is a flexible fixing method for fixing the workpiece, which effectively avoids damage to the workpiece. At the same time as covering the non-spraying area (the outer wall of the workpiece), the workpiece is fixed. That is, the two processes of covering the non-spraying area and fixing the workpiece are integrated, which simplifies the process, shortens the spraying preparation time, and does not require additional workpiece fixing device, which is conducive to simplifying the device and reducing costs.

[0019] (3) Based on the different elastic deformation properties of the first fixing ring and the first rubber expansion ring, this utility model forms a first compressive deformation zone that precisely surrounds the workpiece by combining the shapes of the first fixing ring and the first rubber expansion ring, ensuring precise coverage of the shielding area. The two also form a first annular air groove into which a pressure medium can be introduced. By controlling the pressure medium in the first annular air groove, the quick and precise fixing and shielding fixture for spraying the glass cover of the intelligent mobile terminal can be flexibly controlled between the unlocked state and the locked state on the outside, making the state of the quick and precise fixing and shielding fixture for spraying the glass cover of the intelligent mobile terminal flexible and controllable, with high switching efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the usage state of this utility model; Figure 3 for Figure 2 Exploded view; Figure 4 For along Figure 2 Schematic diagram of the cross section of line AA; Figure 5 For along Figure 2 Schematic diagram of the cross section of the middle BB line; Figure 6 for Figure 4 A magnified view of a section at point C; Figure 7 for Figure 5 A magnified view of a section at point D; Figure 8 for Figure 3 A magnified view of a section at point E in the middle.

[0022] Explanation of reference numerals in the attached figures: 100. Smart mobile terminal glass cover; 101. First shielding area; 102. Second shielding area; 200. Quick and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals; 1. Glass pad; 2. Rubber expansion sleeve; 3. Fixture body; 4. Workpiece placement area; 5. Upper pressure plate; 6. Small pressure plate; 7. Expansion sleeve pressure plate; 8. First sealing ring; 9. Push rod; 10. Push block; 11. Second sealing ring; 12. Third sealing ring; 11. Clearance hole; 21. Upper fixed skirt; 22. First rubber expansion ring; 23. Second rubber sealing plate; 24. Second rubber expansion ring; 25. First rubber sealing plate; 26. Receiving cavity; 31. First fixing ring; 32. Second fixing boss; 33. Base; 34. First air branch; 35. Second air branch; 221. First compressive deformation zone; 241. Second compressive deformation zone; 311. First annular air groove; 312. Annular sealing groove; 321. Second annular air groove; 322. Screw connection hole; 331. Main air passage; 332. Pushing hole. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] The following is in conjunction with the appendix Figure 1-8 The present invention provides a further description of the rapid and precise fixing and masking fixture 200 for spraying glass covers of intelligent mobile terminals. Specifically: Figure 3 , Figure 7 and Figure 8 In the diagram, the red arrow represents the path of the first gas path 34 when a pressurized medium is introduced. The blue arrow represents the path of the second gas path 35 when a pressurized medium is introduced.

[0025] This utility model discloses a quick and precise fixing and masking fixture 200 for spraying glass cover plates of smart mobile terminals, including: a glass pad 1, a rubber expansion sleeve 2, and a fixture body 3; the glass pad 1 is used to support the smart mobile terminal glass cover plate 100, the space above the glass pad 1 for supporting and accommodating the smart mobile terminal glass cover plate 100 is set as a workpiece placement area 4, and the outer wall of the smart mobile terminal glass cover plate 100 is set as a first masking area 101; the rubber expansion sleeve 2 includes a first rubber expansion ring 22, which is annular around the workpiece placement area 4, and the inner wall of the first rubber expansion ring 22 facing the workpiece placement area 4 is a first compression deformation area 221; the fixture body 3 includes a first fixing ring 31, which is annular in shape, and the inner side of the first fixing ring 31 surrounds and fits the outer wall of the first rubber expansion ring 22, and the inner wall of the first fixing ring 31 is provided with a recessed first annular air groove 311 facing the first compression deformation area 221; the smart mobile terminal glass cover plate 100 is used for spraying glass cover plates of smart mobile terminals. The quick and precise fixing and masking fixture 200 for spraying terminal glass cover plates includes an outer unlocked state and an outer locked state. By introducing or releasing a pressure medium into the first annular air groove 311, the expansion and deformation of the first compressive deformation zone 221 or its return to normal state can be controlled, so as to realize the switching of the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plates between the outer locked state and the outer unlocked state. When the workpiece placement area 4 is provided with an intelligent mobile terminal glass cover plate 100 and the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plates is in the outer locked state: the first compressive deformation zone 221 masks the first masking zone 101 and fixes the intelligent mobile terminal glass cover plate 100. When the workpiece placement area 4 is provided with an intelligent mobile terminal glass cover plate 100 and the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plates is in the outer unlocked state: the inner wall of the first rubber expansion ring 22 is spaced apart from the first masking zone 101.

[0026] In this embodiment, the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plates is used to fix the intelligent mobile terminal glass cover plate 100 during the spraying operation, while simultaneously masking the non-spraying areas (masking areas). The rubber expansion sleeve 2 is made of rubber material and can expand and deform under the action of a pressure medium. The fixture body 3 is made of a rigid material that is not easily deformed under external force. The pressure medium can be oil, water, or air.

[0027] The design concept and usage process of this utility model are described in detail below.

[0028] A rubber ring (first expansion ring 22) of elastic material is set around the workpiece to be coated (smart mobile terminal glass cover 100), and a fixing ring (first fixing ring 31) of non-elastic material is set on the outside of the rubber ring. A first annular air groove 311 is set on the inside of the fixing ring, and the outside of the rubber ring and the inside of the fixing ring are attached to close the opening of the first annular air groove 311, providing conditions for the first annular air groove 311 to contain pressure medium. When pressure medium is introduced into the first annular air groove 311, since the first fixing ring 31 is non-elastic material and the first expansion ring 22 is elastic material, the pressure medium will force the first annular air groove 311 to be filled with pressure medium. The portion of the groove 311 opening (the first compressive deformation zone 221) expands towards the workpiece to be coated. Since the first compressive deformation zone 221 is pre-set to face the workpiece to be coated, after the first compressive deformation zone 221 expands and deforms, it will approach and squeeze the workpiece to be coated. By reasonably controlling the maximum pressure of the pressure medium, the first compressive deformation zone 221 can be made to press and fix the outer wall of the smart mobile terminal glass cover 100, thereby fixing the workpiece. Since the outer wall of the smart mobile terminal glass cover 100 is a non-coating area, the non-coating area can be shielded while fixing the workpiece to be coated, that is, the state is the outer locking state.

[0029] In the locked position on the outside, the coating of the upper surface of the smart mobile terminal glass cover 100 is achieved.

[0030] After the spraying is completed and the paint surface has cured, the pressure medium introduced into the first annular air groove 311 is released, and the first expansion ring 22 returns to its normal state under the action of its own elastic force. In this state, the inner wall of the first expansion ring 22 is spaced apart from the outer wall of the smart mobile terminal glass cover 100 located on the glass pad 1; the sprayed smart mobile terminal glass cover 100 can be easily removed, and a new smart mobile terminal glass cover 100 to be sprayed can be inserted.

[0031] Compared with the prior art, the quick and precise fixing and masking fixture 200 for spraying glass cover plates of intelligent mobile terminals of this utility model has the following beneficial effects.

[0032] (1) When the workpiece to be sprayed is loaded and removed, there is a gap between the intelligent mobile terminal glass cover 100 and the first rubber expansion ring 22, which can easily load and remove the workpiece and ensure that the intelligent mobile terminal glass cover 100 is not damaged.

[0033] (2) When the workpiece is sprayed using this utility model, the smart mobile terminal glass cover 100 is fixed and the outer wall of the smart mobile terminal glass cover 100 is covered by the first expansion ring 22 of the elastic material. The first expansion ring 22 of the elastic material fixes the workpiece in a flexible way, which can effectively avoid damage to the workpiece. At the same time as covering the non-sprayed area (the outer wall of the workpiece), the workpiece is fixed, that is, the two processes of covering the non-sprayed area and fixing the workpiece are integrated, which not only simplifies the process and shortens the spraying preparation time, but also eliminates the need for additional workpiece fixing devices, which is conducive to simplifying the device and reducing costs.

[0034] (3) Based on the elastic deformation performance of the first expansion ring 22, this utility model forms a first compression deformation zone 221 that precisely surrounds the workpiece by combining the shapes of the first fixing ring 31 and the first expansion ring 22, ensuring precise coverage of the shielding area. The two also form a first annular air groove 311 that can be circulated with pressure medium. By controlling the pressure medium in the first annular air groove 311, it is possible to flexibly control the quick and precise fixing shielding fixture 200 for spraying the glass cover of the intelligent mobile terminal between the unlocked state and the locked state on the outside, making the state of the fixture flexible and controllable, and with high switching efficiency.

[0035] According to a specific embodiment of this utility model, the smart mobile terminal glass cover 100 further includes a functional hole penetrating therethrough, and the inner wall of the functional hole is provided as a second shielding area 102; the glass pad 1 is provided with a clearance hole 11 penetrating therethrough; the rubber expansion sleeve 2 further includes a second rubber expansion ring 24 that is annular in shape, the second rubber expansion ring 24 is located inside the first rubber expansion ring 22, and the second rubber expansion ring 24 penetrates the clearance hole 11; the fixture body 3 further includes a second fixing boss 32, the second rubber expansion ring 24 is arranged around and fits the outer wall of the second fixing boss 32, and a recessed second annular air groove 321 is provided around the outer wall of the second fixing boss 32 at the position directly opposite the second compression deformation area 241; the outer wall of the second rubber expansion ring 24 is provided at the position directly opposite the workpiece placement area 4 as the second compression deformation area 241; the smart mobile terminal glass cover spraying quick and precise fixing shielding tool The fixture 200 also includes an inner unlocked state and an inner locked state; by introducing or releasing a pressure medium into the second annular air groove 321, the expansion and deformation of the second compressive deformation zone 241 can be controlled to expand and deform or return to normal, so as to realize the switching of the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plate between the inner unlocked state and the inner locked state; when the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plate is in the inner unlocked state, the workpiece placement area 4 is provided with the intelligent mobile terminal glass cover plate 100, and the outer wall of the second rubber expansion ring 24 is spaced apart from the second masking area 102; when the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plate is in the inner locked state, the workpiece placement area 4 is provided with the intelligent mobile terminal glass cover plate 100, and the second compressive deformation zone 241 masks the second masking area 102.

[0036] In this embodiment, the inside of the functional component hole is also the area that needs to be masked during the spraying process.

[0037] It should be noted that: functional holes generally refer to camera holes, meaning that the smart mobile terminal glass cover 100 can be a mobile phone glass back cover with a camera hole, or a tablet computer glass back cover with a camera hole. With the development of future technology, functional holes can also be microphone holes, speaker holes, or other functional holes that may penetrate the smart mobile terminal glass cover 100.

[0038] The structure of this embodiment can also shield the second shielding area 102, and its shielding structure, principle, and beneficial effects are similar to those of the scheme for shielding the first shielding area 101. The key difference is that in the above embodiment, the first compressive deformation area 221 expands inward and shields the first shielding area 101, while in this embodiment, the second compressive deformation area 241 expands outward and shields the second shielding area 102.

[0039] In practice, the expansion deformation of the first compressive deformation zone 221 and the second compressive deformation zone 241 can be controlled separately, or the expansion deformation of the first compressive deformation zone 221 and the second compressive deformation zone 241 can be controlled simultaneously. When loading and unloading the workpiece to be sprayed, the quick and precise fixing and masking fixture 200 for spraying the glass cover of the intelligent mobile terminal needs to be in both the outer unlocked state and the inner unlocked state at the same time to ensure free loading and unloading of the workpiece; when performing spraying operations on the workpiece, the quick and precise fixing and masking fixture 200 for spraying the glass cover of the intelligent mobile terminal needs to be in both the outer locked state and the inner locked state at the same time to achieve masking of the non-spraying area.

[0040] The structure of this embodiment can further shield the inner wall of the functional component hole, adapting to the spraying requirements of mobile phone and tablet glass covers with camera holes. In the inner locked state, the second compressive deformation zone 241 squeezes and shields the inner wall of the functional component hole, which can further improve the stability of the clamping during the spraying of the tablet glass cover.

[0041] According to a specific embodiment of this utility model, the pressure medium is air; the fixture body 3 also includes a base 33, the lower parts of the first fixing ring 31 and the second fixing boss 32 are respectively fixed to the upper part of the base 33, the fixture body 3 also includes a first branch air passage 34 formed on the base 33 and the first fixing ring 31 and communicating with the first annular air groove 311; the fixture body 3 also includes a second branch air passage 35 formed on the base 33 and the second fixing boss 32 and communicating with the second annular air groove 321; the base 33 is also provided with a main air passage 331 that communicates with both the first branch air passage 34 and the second branch air passage 35.

[0042] In this embodiment, air is used as the pressure medium, which improves the tolerance to pressure medium leakage. Compared with liquid as the medium, it avoids contamination of the workpiece or tooling due to pressure medium leakage. The first compressive deformation zone 221 and the second compressive deformation zone 241 share a single pressure medium control air path, which ensures the synchronization of the deformation actions of the first compressive deformation zone 221 and the second compressive deformation zone 241. This further shortens the preparation time for spraying, improves the efficiency of workpiece loading and unloading, and simplifies the structure of the tooling.

[0043] According to a specific embodiment of the present invention, the upper part of the first expansion ring 22 is provided with an upper fixing skirt 21 that bends downward and extends downward. The upper fixing skirt 21 is an annular shape that surrounds the outer side of the first expansion ring 22. The quick and precise fixing and masking fixture 200 for spraying glass cover of intelligent mobile terminal also includes an upper pressure plate 5 that is detachably fixed to the upper part of the first fixing ring 31 by a threaded connector. The upper fixing skirt 21 is located between the first fixing ring 31 and the upper pressure plate 5, and the upper fixing skirt 21 is pressed and fixed to the upper part of the first fixing ring 31 by the upper pressure plate 5.

[0044] In this embodiment, the upper pressure plate 5 and the first fixing ring 31 cooperate to press and fix the upper fixing skirt 21, thereby achieving the pressing and fixing of the upper outer position of the first rubber expansion ring 22, which can improve the stability of the position of the rubber expansion sleeve 2.

[0045] According to a specific embodiment of the present invention, the rubber expansion sleeve 2 further includes a first sealing plate 25 connected to the first rubber expansion ring 22 and completely sealing the upper opening of the second rubber expansion ring 24. The quick and precise fixing and masking fixture 200 for spraying the glass cover of the intelligent mobile terminal also includes a small pressure plate 6 that is detachably fixed to the upper part of the second fixing boss 32 by a threaded connector. The first sealing plate 25 is located between the second fixing boss 32 and the small pressure plate 6, and the first sealing plate 25 is pressed and fixed to the upper part of the second fixing boss 32 by the small pressure plate 6.

[0046] In this embodiment, the small pressure plate 6 and the second fixed boss 32 cooperate to press and fix the first sealing plate 25, thereby achieving the pressing and fixing of the upper inner side of the second rubber expansion ring 24, which can further improve the stability of the rubber expansion sleeve 2.

[0047] According to a specific embodiment of this utility model, the rubber expansion sleeve 2 further includes a second sealing plate 23. The second sealing plate 23 connects the bottom of the first expansion ring 22 and the bottom of the second expansion ring 24, and the second sealing plate 23 completely seals the gap between the bottom of the first expansion ring 22 and the bottom of the second expansion ring 24. The first expansion ring 22, the second expansion ring 24 and the second sealing plate 23 together form a receiving cavity 26 with an upper opening. The quick and precise fixing and masking fixture 200 for spraying glass cover of intelligent mobile terminals also includes an expansion sleeve pressure plate 7 that is detachably fixed to the top of the base 33 by a threaded connector. The second sealing plate 23 is located between the base 33 and the expansion sleeve pressure plate 7, and the second sealing plate 23 is pressed and fixed to the upper part of the base 33 by the expansion sleeve pressure plate 7. The expansion sleeve pressure plate 7 is located in the receiving cavity 26. The shape of the expansion sleeve pressure plate 7 matches the shape of the second sealing plate 23, and the expansion sleeve pressure plate 7 and the second sealing plate 23 are aligned vertically. The glass pad 1 is fixed to the upper part of the expansion sleeve pressure plate 7.

[0048] In this embodiment, the expansion sleeve pressure plate 7 and the base 33 cooperate to press and fix the second sealing plate 23, thereby achieving the pressing and fixing of the bottom of the first rubber expansion ring 22 and the bottom of the second rubber expansion ring 24. Since the shape of the expansion sleeve pressure plate 7 matches the shape of the second sealing plate 23, and the expansion sleeve pressure plate 7 and the second sealing plate 23 are aligned vertically, the deformation of the second sealing plate 23 can be completely restricted. This structure has the following beneficial effects: (1) It can improve the controllability of the deformation position of the rubber expansion sleeve 2; (2) It can improve the airtightness of the lower part of the first rubber expansion ring 22, which can reduce or avoid the leakage of the pressure medium from the lower part of the first rubber expansion ring 22. Moreover, when releasing the pressure medium, it prevents external gas from entering the space between the first rubber expansion ring 22 and the first fixing ring 31 from the lower part of the first rubber expansion ring 22, which is conducive to forming a vacuum environment between the two, so that the first rubber expansion ring 22 is tightly attached to the first fixing ring 31, expanding the gap between the first rubber expansion ring 22 and the workpiece, which is more conducive to the loading and unloading of the workpiece; (3) It can further improve the stability of the position of the rubber expansion sleeve 2.

[0049] According to a specific embodiment of this utility model, the upper fixed skirt 21, the first rubber expansion ring 22, the second rubber sealing plate 23, the second rubber expansion ring 24 and the first rubber sealing plate 25 are integrally injection molded.

[0050] The solution adopted in this embodiment is beneficial to improving the strength and stress-bearing effect of the rubber expansion sleeve 2.

[0051] According to a specific embodiment of the present invention, the upper part of the first fixing ring 31 is a stepped shape with the inner ring higher and the outer ring lower; the upper inner ring of the first fixing ring 31 is provided with a recessed annular sealing groove 312, and the annular sealing groove 312 is provided with a first sealing ring 8. The upper part of the upper fixing skirt 21 completely covers the annular sealing groove 312, and the lower part of the upper fixing skirt 21 covers the outer wall of the inner ring of the first fixing ring 31. The lower part of the upper pressure plate 5 is a stepped shape that cooperates with the upper part of the first fixing ring 31. The outer ring of the upper pressure plate 5 is fixedly connected to the first fixing ring 31 through a threaded connector, so as to realize the inner ring of the upper pressure plate 5 press-fitting and fixing the upper fixing skirt 21.

[0052] In this embodiment, the inner ring of the upper pressure plate 5 is used to press and install the upper fixed skirt 21, and the outer ring of the upper pressure plate 5 provides installation space for the threaded connector. The contact point between the upper pressure plate 5 and the first fixed ring 31 is a stepped structure that fits together, which facilitates quick docking and installation and achieves snap-fit ​​positioning. The first sealing ring 8 is used to improve the airtightness of the upper part of the first expansion ring 22, which can reduce or avoid leakage of the pressure medium from the upper part of the first expansion ring 22. Moreover, when releasing the pressure medium, it prevents external gas from entering the space between the first expansion ring 22 and the first fixed ring 31 from the upper part of the first expansion ring 22, which further facilitates the formation of a vacuum environment between the two, so that the first expansion ring 22 is tightly attached to the first fixed ring 31.

[0053] According to a specific embodiment of this utility model, the quick and precise fixing and masking fixture 200 for spraying intelligent mobile terminal glass cover plates also includes a pusher hole 332 that simultaneously penetrates the base 33, the second adhesive sealing plate 23, the expansion sleeve pressure plate 7, and the glass pad plate 1. A pusher rod 9 is slidably connected in the pusher hole 332. The top of the pusher rod 9 is provided with a pusher block 10 for pushing the intelligent mobile terminal glass cover plate 100 above the workpiece placement area 4. The lower part of the pusher rod 9 is provided with a telescopic power component (not shown in the figure) for driving the pusher rod 9 to rise and fall.

[0054] According to a specific embodiment of this utility model, the quick and precise fixing and masking fixture 200 for spraying glass cover plates of intelligent mobile terminals also includes a vacuum pressure integrated machine (not shown in the figure) connected to the main air passage 331. The vacuum pressure integrated machine introduces or releases pressure medium into the first annular air groove 311 and the second annular air groove 321 through the main air passage 331, and can also realize vacuuming.

[0055] In this embodiment, the vacuum pressure integrated machine integrates two major modules: vacuuming and pressurizing gas supply, eliminating the need for additional equipment. By switching internal valves, compressed gas can be introduced into the target space (first annular gas groove 311 and second annular gas groove 321) via the main gas path 331 and branch gas paths (to achieve pressurization) or gas can be extracted from the space (to achieve release of pressure medium or vacuuming).

[0056] According to a specific embodiment of this utility model, the top of the upper pressure plate 5 is a flat surface; the functional component hole is an oblong hole or a round hole.

[0057] In this embodiment, the top of the upper pressure plate 5 is flat to ensure the flatness of the tooling. The shape of the functional component hole is adapted to the shape of the functional component to be penetrated.

[0058] The quick and precise fixing and masking fixture 200 for spraying glass cover of smart mobile terminals also includes a second sealing ring 011 located on the upper part of the base 33 and surrounding the push hole 332. The top of the second fixing boss 32 is provided with a screw connection hole 322 for the insertion of threaded connectors. The quick and precise fixing and masking fixture 200 for spraying glass cover of smart mobile terminals also includes a third sealing ring 012 located on the top of the second fixing boss 32 and surrounding the screw connection hole 322.

[0059] In this embodiment, the use of this structure can further improve the sealing performance of the gas path used for introducing or releasing pressure medium in the tooling.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; and they can also refer to a "transmission connection," that is, a power connection through various suitable methods such as belt drive, gear drive, or sprocket drive. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals, characterized in that, include: The fixture comprises a glass pad, a rubber expansion sleeve, and a fixture body. The glass pad supports the glass cover of a smart mobile terminal. The space above the glass pad, used to support and accommodate the glass cover, is designated as a workpiece placement area. A first shielding area is defined around the outer wall of the glass cover. The rubber expansion sleeve includes a first rubber expansion ring, which is annular around the workpiece placement area. A first compression deformation area is defined around the inner wall of the first rubber expansion ring directly opposite the workpiece placement area. The fixture body includes a first fixing ring, which is annular in shape. The inner side of the first fixing ring surrounds and fits the outer wall of the first rubber expansion ring. A recessed first annular air groove is provided around the inner wall of the first fixing ring directly opposite the first compression deformation area. The quick and precise fixing and shielding fixture for spraying the smart mobile terminal glass cover includes an outer unlocking mechanism. The first pressure deformation zone can be controlled to expand or return to normal by introducing or releasing pressure medium into the first annular air groove, thereby enabling the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover to switch between the outer locking state and the outer unlocking state; when the workpiece placement area is provided with the smart mobile terminal glass cover, and the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover is in the outer locking state: the first pressure deformation zone masks the first masking area, while fixing the smart mobile terminal glass cover; when the workpiece placement area is provided with the smart mobile terminal glass cover, and the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover is in the outer unlocking state: the inner wall of the first expansion ring is spaced apart from the first masking area.

2. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 1, characterized in that, The smart mobile terminal glass cover plate also includes a functional hole passing through it, and the inner wall of the functional hole is set as a second shielding area; the glass pad plate is provided with a clearance hole passing through it; the rubber expansion sleeve also includes a second rubber expansion ring that is generally annular, the second rubber expansion ring is located inside the first rubber expansion ring, and the second rubber expansion ring passes through the clearance hole; the fixture body also includes a second fixing boss, the second rubber expansion ring is arranged around and fits the outer wall of the second fixing boss, and the part of the outer wall of the second rubber expansion ring facing the workpiece placement area is set as a second compression deformation area; the outer wall of the second fixing boss is provided with a recessed second annular air groove at the position facing the second compression deformation area; the quick and precise fixing and shielding fixture for spraying the smart mobile terminal glass cover plate also includes an inner unlocking state. The device is in both the unlocked and locked states. By introducing or releasing a pressure medium into the second annular air groove, the expansion and deformation of the second compressive deformation zone can be controlled to return to its normal state, thereby enabling the quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover to switch between the unlocked and locked states. When the device is in the unlocked state, the workpiece placement area is provided with the smart mobile terminal glass cover, and the outer wall of the second expansion ring is spaced apart from the second masking area. When the device is in the locked state, the workpiece placement area is provided with the smart mobile terminal glass cover, and the second compressive deformation zone masks the second masking area.

3. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 2, characterized in that, The pressure medium is air; the fixture body also includes a base, the lower parts of the first fixing ring and the second fixing boss are respectively fixed to the upper part of the base, the fixture body also includes a first branch air passage formed on the base and the first fixing ring and communicating with the first annular air groove; the fixture body also includes a second branch air passage formed on the base and the second fixing boss and communicating with the second annular air groove; the base is also provided with a main air passage that communicates with both the first branch air passage and the second branch air passage.

4. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 3, characterized in that, The upper part of the first expansion ring is provided with an upper fixing skirt that bends downward. The upper fixing skirt is an annular shape that surrounds the outside of the first expansion ring. The quick and precise fixing and masking fixture for spraying the glass cover of the smart mobile terminal also includes an upper pressure plate that is detachably fixed to the upper part of the first fixing ring by a threaded connector. The upper fixing skirt is located between the first fixing ring and the upper pressure plate, and the upper fixing skirt is pressed and fixed to the upper part of the first fixing ring by the upper pressure plate.

5. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 4, characterized in that, The rubber expansion sleeve also includes a first sealing plate connected to the first rubber expansion ring and completely sealing the upper opening of the second rubber expansion ring. The quick and precise fixing and masking fixture for spraying the smart mobile terminal glass cover also includes a small pressure plate that is detachably fixed to the upper part of the second fixing boss through a threaded connector. The first sealing plate is located between the second fixing boss and the small pressure plate, and the first sealing plate is pressed and fixed to the upper part of the second fixing boss by the small pressure plate.

6. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 5, characterized in that, The rubber expansion sleeve also includes a second sealing plate, which connects the bottom of the first expansion ring and the bottom of the second expansion ring, and completely seals the gap between the bottom of the first expansion ring and the bottom of the second expansion ring. The first expansion ring, the second expansion ring, and the second sealing plate together form a receiving cavity with an upper opening. The quick and precise fixing and masking fixture for spraying the glass cover of the smart mobile terminal also includes an expansion sleeve pressure plate that is detachably fixed to the upper part of the base by a threaded connector. The second sealing plate is located between the base and the expansion sleeve pressure plate, and the second sealing plate is pressed and fixed to the upper part of the base by the expansion sleeve pressure plate. The expansion sleeve pressure plate is located in the receiving cavity, and the shape of the expansion sleeve pressure plate matches the shape of the second sealing plate. The expansion sleeve pressure plate and the second sealing plate are aligned vertically. The glass pad is fixed to the upper part of the expansion sleeve pressure plate.

7. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 6, characterized in that, The upper fixed skirt, the first expansion ring, the second sealing plate, the second expansion ring and the first sealing plate are integrally injection molded.

8. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 7, characterized in that, The upper part of the first fixing ring is stepped, with the inner ring higher and the outer ring lower. The upper inner ring of the first fixing ring is provided with a recessed annular sealing groove, and a first sealing ring is provided in the annular sealing groove. The upper part of the upper fixing skirt completely covers the annular sealing groove, and the lower part of the upper fixing skirt covers the outer wall of the inner ring of the first fixing ring. The lower part of the upper pressure plate is stepped and matches the upper part of the first fixing ring. The outer ring of the upper pressure plate is fixedly connected to the first fixing ring through a threaded connector, so as to realize the inner ring of the upper pressure plate press-fitting and fixing the upper fixing skirt.

9. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 8, characterized in that, The quick and precise fixing and masking fixture for spraying glass cover plates of smart mobile terminals also includes a pusher hole that passes through the base, the second sealing plate, the expansion sleeve pressure plate, and the glass pad. A pusher rod is slidably connected in the pusher hole. The top of the pusher rod is provided with a pusher block for pushing the smart mobile terminal glass cover plate above the workpiece placement area. The lower part of the pusher rod is provided with a telescopic power component for driving the pusher rod to rise and fall. The quick and precise fixing and masking fixture for spraying glass cover plates of smart mobile terminals also includes a second sealing ring located on the upper part of the base and surrounding the pusher hole. The top of the second fixing boss is provided with a screw connection hole. The quick and precise fixing and masking fixture for spraying glass cover plates of smart mobile terminals also includes a third sealing ring located on the top of the second fixing boss and surrounding the screw connection hole.

10. The rapid and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals according to claim 9, characterized in that, The quick and precise fixing and masking fixture for spraying glass cover plates of intelligent mobile terminals also includes a vacuum pressure integrated machine connected to the main air passage. The vacuum pressure integrated machine introduces or releases pressure medium into the first annular air groove and the second annular air groove through the main air passage.

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