Jig for painting inside rear cover of mobile phone

Abstract

The utility model discloses a mobile phone rear cover interior paint spraying jig, and relates to the technical field of mobile phone rear cover production jigs, the mobile phone rear cover interior paint spraying jig comprises an upper jig and a lower jig, and further comprises an auxiliary paint spraying assembly, the auxiliary paint spraying assembly comprises an adjusting part and a positioning part and is used for accurately positioning the rear cover paint spraying range, the adjusting part is connected with the positioning part, and the positioning part is used for positioning the rear cover paint spraying range. The positioning distance of the positioning part is adjusted; the positioning assembly is used for positioning the placing position of the rear cover to ensure the paint spraying accuracy; the first sucking disc is arranged on the bottom surface of the lower jig; the second suction cups are symmetrically installed on the upper end face of the upper jig and extend out after penetrating through the upper jig. According to the rear cover paint spraying device, the positioning part of the auxiliary paint spraying assembly is arranged on the bottom face of the upper jig, the paint spraying range of a rear cover can be accurately controlled, meanwhile, due to the connection design of the adjusting part and the positioning part, the positioning distance can be flexibly adjusted according to the actual paint spraying requirement, and therefore the paint spraying accuracy and consistency are further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of jigs for producing mobile phone back covers, specifically a jig for spraying paint inside a mobile phone back cover. Background Technology

[0002] To enhance the physical and chemical properties of mobile phone casings, they are often painted. Different surfaces of the casing are painted according to different usage requirements. Therefore, during the painting process, specific surfaces of the casing need to be painted precisely.

[0003] In the process of painting the inside of a mobile phone back cover, ensuring the accuracy and uniformity of the paint is crucial. However, existing fixtures often suffer from problems such as inaccurate positioning, unstable back cover fixation, and difficulty in precisely controlling the painting range. These problems not only affect the efficiency and quality of the painting process but may also lead to defects on the back cover surface and even material waste. Utility Model Content

[0004] This utility model provides a jig for spraying paint inside the back cover of a mobile phone, which has the advantage of being able to precisely control the spraying range, thereby solving the problem of insufficient precision and uniformity in spraying.

[0005] To achieve precise control of the painting range, this utility model provides the following technical solution: a jig for painting the inside of a mobile phone back cover, including an upper jig and a lower jig, and further including: an auxiliary painting component, which includes an adjustment part and a positioning part. The positioning part is disposed on the bottom surface of the upper jig and is used to precisely position the painting range of the back cover. The adjustment part is disposed on the upper end surface of the upper jig and is connected to the positioning part to adjust the positioning distance of the positioning part; a positioning component is disposed on the upper, lower, left, and right sides of the lower jig and is used to position the back cover to ensure the accuracy of the painting; a first suction cup is disposed on the bottom surface of the lower jig and extends through the lower jig into the lower jig; a second suction cup is symmetrically installed on the upper end surface of the upper jig and extends through the upper jig.

[0006] Preferably, the positioning part includes a shaped rod, a pushing block, and a rubber sleeve. The bottom face of the lower fixture is provided with multiple sliding grooves, which communicate with the interior of the lower fixture. The shaped rod is slidably connected in the sliding grooves. One end of the shaped rod extends into the lower fixture, and the other end extends out of the lower fixture. The pushing block is installed at the end of the shaped rod that extends out of the lower fixture. The rubber sleeve is fitted on the outer wall of the pushing block, covering the multiple pushing blocks. The end of the shaped rod that extends into the lower fixture is connected to the adjusting part for transmission.

[0007] Preferably, the adjustment part includes a driving member and a locking member. The driving member is rotatably connected inside the upper fixture and is drivenly connected to the irregular rod. The locking member is disposed on the upper end face of the upper fixture and is used to lock the driving member.

[0008] Preferably, the driving component includes a rotating shaft, symmetrically arranged gears and ratchet. The rotating shaft is rotatably connected inside the upper fixture and extends through the upper fixture. The gears are symmetrically installed at one end of the rotating shaft located inside the upper fixture. The outer wall of the irregular rod is provided with a rack that meshes with the gear. The bottom surface of the ratchet is provided with an inwardly recessed groove. The ratchet is slidably connected to the end of the rotating shaft extending out of the upper fixture through the groove.

[0009] Preferably, the groove is provided with symmetrical guide grooves, and the outer wall of the rotating shaft is provided with guide blocks that are slidably connected to the guide grooves.

[0010] Preferably, a first spring is provided in the groove, and the two ends of the first spring are respectively connected to the top wall of the groove and the upper end face of the rotating shaft.

[0011] Preferably, the locking element includes a sleeve and teeth. The sleeve is mounted on the upper end face of the upper fixture and is coaxially mounted with the ratchet. The teeth are disposed on the inner wall of the sleeve and engage with the ratchet.

[0012] Preferably, the positioning assembly includes a mounting cylinder, a positioning rod, a second spring, and a fixing rod. The mounting cylinder is installed on the outer wall of the lower fixture. The positioning rod is slidably connected inside the mounting cylinder and extends through the lower fixture. The second spring is disposed inside the mounting cylinder, and its two ends are fixedly connected to the positioning rod and the mounting cylinder, respectively. The outer wall of the positioning rod is provided with a through groove. The outer wall of the mounting cylinder is provided with an opening corresponding to the through groove. Both the opening and the through groove are fitted with the fixing rod. The fixing rod is movably connected in the opening and extends into the through groove.

[0013] Compared with the prior art, this utility model provides a fixture for spraying paint inside the back cover of a mobile phone, which has the following beneficial effects:

[0014] This mobile phone back cover internal painting fixture, by setting a positioning part of the auxiliary painting component on the bottom surface of the upper fixture, can precisely control the range of back cover painting. At the same time, the connection design between the adjustment part and the positioning part allows the positioning distance to be flexibly adjusted according to actual painting needs, thereby further improving the accuracy and consistency of painting.

[0015] The positioning components on all four sides of the lower fixture can fix the position of the phone back cover 7 from all directions, effectively preventing paint deviation caused by movement or shaking of the back cover during the painting process. This design not only improves the accuracy of painting, but also ensures the stability and reliability of the entire painting process.

[0016] The first suction cup is positioned on the bottom surface of the lower fixture and extends through it, firmly adhering to the bottom of the rear cover and preventing it from moving upwards. The second suction cup is symmetrically mounted on the upper surface of the upper fixture and extends through it, further securing the top of the rear cover, achieving double-layer fixation. This optimized suction cup design not only enhances the stability of the rear cover but also helps improve the uniformity and quality of the paint application.

[0017] By setting up irregularly shaped rods, push blocks, and rubber sleeves, the positioning part can be precisely controlled so that the rubber sleeve is pushed open by the push block and close to the edge of the back cover, leaving a paint spraying range that meets the requirements. This makes the paint spraying range more precise and improves the aesthetics and durability of the phone back cover 7.

[0018] By setting up an installation cylinder, a positioning rod, a second spring, a fixing rod, and a through groove, the positioning rod can be pushed out by the second spring to abut against the outer wall of the phone back cover 7, thereby fixing the phone back cover 7 in a fixed position. After the positioning is completed, the fixing rod can be retracted into the installation cylinder by inserting the fixing rod, so as not to affect the painting process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This is a schematic diagram of the upper and lower fixtures of this utility model.

[0022] Figure 4 This is a cross-sectional view of the upper fixture of this utility model;

[0023] Figure 5 This is a bottom view of the upper fixture of this utility model;

[0024] Figure 6 This is a cross-sectional view of the adjusting part of this utility model;

[0025] Figure 7 This is a schematic diagram of the sleeve and toothed structure of this utility model;

[0026] Figure 8 This is a schematic diagram of the positioning component structure of this utility model.

[0027] In the diagram: 1. Upper fixture; 2. Lower fixture; 21. Slide groove; 3. Auxiliary painting assembly; 31. Adjustment part; 311. Rotating shaft; 312. Gear; 313. Ratchet; 314. Groove; 315. First spring; 316. Guide groove; 317. Guide block; 318. Sleeve; 319. Toothed part; 32. Positioning part; 321. Irregular rod; 322. Pushing block; 323. Rubber sleeve; 324. Rack; 4. Positioning assembly; 41. Mounting cylinder; 411. Opening; 42. Positioning rod; 421. Through groove; 43. Second spring; 44. Fixing rod; 5. First suction cup; 6. Second suction cup; 7. Mobile phone back cover. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0029] Please see Figures 1-8 This utility model discloses a jig for spraying paint inside a mobile phone back cover, including an upper jig 1 and a lower jig 2, and further including: an auxiliary spraying component 3, which includes an adjustment part 31 and a positioning part 32. The positioning part 32 is disposed on the bottom surface of the upper jig 1 and is used to accurately position the spraying range of the back cover. The adjustment part 31 is disposed on the upper end surface of the upper jig 1 and is connected to the positioning part 32 to adjust the positioning distance of the positioning part 32; a positioning component 4, which is disposed on the upper, lower, left and right sides of the lower jig 2 and is used to position the back cover to ensure the accuracy of spraying; a first suction cup 5, which is disposed on the bottom surface of the lower jig 2 and extends through the lower jig 2 into the lower jig 2; and a second suction cup 6, which is symmetrically installed on the upper end surface of the upper jig 1 and extends through the upper jig 1.

[0030] Please see Figures 1-5The positioning part 32 includes a shaped rod 321, a pushing block 322, and a rubber sleeve 323. The bottom face of the lower fixture 2 is provided with multiple sliding grooves 21, which communicate with the interior of the lower fixture 2. The shaped rod 321 is slidably connected within each sliding groove 21. One end of each shaped rod 321 extends into the lower fixture 2, and the other end extends out of the lower fixture 2. The pushing block 322 is installed at the end of the shaped rod 321 extending out of the lower fixture 2. The rubber sleeve 323 is fitted onto the... The outer wall of the push block 322 encloses the multiple push blocks 322. One end of the irregular rod 321, which extends into the lower fixture 2, is connected to the adjustment part 31. By setting the irregular rod 321, the push block 322, and the rubber sleeve 323, the positioning part 32 can be precisely controlled to make the rubber sleeve 323 be opened by the push block 322 and close to the edge of the back cover, leaving a paint spraying range that meets the requirements. This makes the paint spraying range more accurate and improves the aesthetics and durability of the phone back cover 7.

[0031] Please see Figures 1-7The adjusting part 31 includes a driving member and a locking member. The driving member is rotatably connected to the upper fixture 1 and is drively connected to the irregular rod 321. The locking member is disposed on the upper end face of the upper fixture 1 and is used to lock the driving member. By providing the driving member and the locking member, it is easy to drive the irregular rod 321 to move, so that the irregular rod 321 can be extended or retracted. The locking member can lock the irregular rod 321 after it has been extended or retracted. The driving member includes a rotating shaft 311, symmetrically arranged gears 312 and ratchet 3. 13. The rotating shaft 311 is rotatably connected to the upper fixture 1 and extends through the upper fixture 1. The gear 312 is symmetrically mounted vertically at one end of the rotating shaft 311 located inside the upper fixture 1. The outer wall of the irregular rod 321 is provided with a rack 324 that meshes with the gear 312. The bottom surface of the ratchet 313 is provided with an inwardly recessed groove 314. The ratchet 313 is slidably connected to the end of the rotating shaft 311 extending out of the upper fixture 1 through the groove 314. The groove 314 is symmetrically provided with guides. The guide groove 316 is provided, and the outer wall of the rotating shaft 311 is provided with a guide block 317 that is slidably connected to the guide groove 316. By providing the guide groove 316 and the guide block 317, the rotating shaft 311 can be easily driven to rotate when the ratchet 313 is rotated, and the ratchet 313 can be easily slid up and down. The groove 314 is provided with a first spring 315, and the two ends of the first spring 315 are respectively connected to the top wall of the groove 314 and the upper end face of the rotating shaft 311. By providing the first spring 315, the ratchet 313 can be easily driven to rotate when the ratchet 313 is rotated. After moving downwards, it automatically resets. The locking component includes a sleeve 318 and a toothed band 319. The sleeve 318 is installed on the upper end face of the upper fixture 1 and is coaxially mounted with the ratchet 313. The toothed band 319 is disposed on the inner wall of the sleeve 318 and meshes with the ratchet 313. By setting the sleeve 318 and the toothed band 319, the rotating shaft 311 can be locked when the ratchet 313 is meshed with the toothed band 319. By pressing down on the ratchet 313, the ratchet 313 is disengaged from the toothed band 319, thereby unlocking the rotation. Example 2

[0032] Based on the above embodiment one, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 8The positioning assembly 4 includes a mounting cylinder 41, a positioning rod 42, a second spring 43, and a fixing rod 44. The mounting cylinder 41 is installed on the outer wall of the lower fixture 2. The positioning rod 42 is slidably connected inside the mounting cylinder 41 and extends through the lower fixture 2. The second spring 43 is disposed inside the mounting cylinder 41, and its two ends are fixedly connected to the positioning rod 42 and the mounting cylinder 41, respectively. The outer wall of the positioning rod 42 is provided with a through groove 421, and the outer wall of the mounting cylinder 41 is provided with an opening 411 corresponding to the through groove 421. The opening 411 and the through groove... All 421 are fitted with the fixing rod 44. The fixing rod 44 is movably connected in the opening 411 and extends into the through groove 421. By setting the mounting cylinder 41, positioning rod 42, second spring 43, fixing rod 44 and through groove 421, the second spring 43 can push the positioning rod 42 out to abut against the outer wall of the mobile phone back cover 7 and fix the mobile phone back cover 7 in a fixed position. After the positioning is completed by the fixing rod 44 and through groove 421, the fixing rod 44 is retracted into the mounting cylinder 41. The positioning rod 42 is retracted into the mounting cylinder 41 by inserting the fixing rod 44, so as not to affect the painting process.

[0033] Working principle and usage process of this utility model:

[0034] Before use, ensure that the upper jig 1, lower jig 2, auxiliary painting component 3 and positioning component 4 are intact. Then prepare the phone back cover 7, clean the phone back cover 7 to be painted, and ensure that the surface is free of dust and impurities.

[0035] In use, place the lower fixture 2 stably on the worktable, connect the first suction cup 5 and the second suction cup 6 to the vacuum equipment, place the phone back cover 7 on the lower fixture 2, ensuring that the bottom surface of the back cover is tightly fitted to the contact surface of the lower fixture 2. At this time, the second spring 43 is in the extended state, which can determine the fixed position according to the size of the phone back cover 7. Then, start the vacuum equipment to make the first suction cup 5 suck and fix the phone back cover 7. Then push the positioning rod 42 to enter the mounting cylinder 41. The positioning rod 42 compresses the second spring 43. Then insert the fixing rod 44 so that the fixing rod 44 enters the opening 411 and the through groove 421 in sequence. Then close the upper fixture 1 and check the positioning accuracy to ensure that the gap between the rubber sleeve 323 and the edge of the phone back cover 7 meets the painting requirements. Then start the vacuum equipment to suck the upper surface of the phone back cover 7 with the second suction cup 6. Then adjust the auxiliary painting component 3. At this time, rotate the ratchet 313. The rotating shaft 311 is driven to rotate by the guide groove 316 and the guide block 317, which in turn drives the gear 312 to rotate. The gear 312 meshes with the rack 324 on the shaped rod 321, driving the shaped rod 321 to slide in the slide groove 21. The end of the shaped rod 321 extends out of the lower fixture 2 and pushes the push block 322. The rubber sleeve 323 is then stretched open and close to the edge of the phone back cover 7 to form a specified painting range. The ratchet 313 is locked using locking parts (sleeve 318 and toothed 319) to prevent the shaped rod 321 from moving. Then the painting equipment is started, and the parameters of the painting equipment are adjusted according to the painting requirements. The painting begins, and the painting equipment is used to spray the phone back cover 7 to ensure that the painting is uniform and without omissions. After the painting is completed, the vacuum equipment is turned off, so that the first suction cup 5 and the second suction cup 6 release the phone back cover 7. Then the phone back cover 7 is taken out, the fixture is cleaned, and residual paint and impurities are removed to prepare for the next use.

Claims

1. A jig for spraying paint inside a mobile phone back cover, comprising an upper jig (1) and a lower jig (2), characterized in that, Also includes: The auxiliary painting assembly (3) includes an adjustment part (31) and a positioning part (32). The positioning part (32) is disposed on the bottom surface of the upper fixture (1) and is used to accurately position the painting range of the back cover. The adjustment part (31) is disposed on the upper end surface of the upper fixture (1) and is connected to the positioning part (32) to adjust the positioning distance of the positioning part (32). Positioning component (4), which is set on the upper, lower, left and right sides of the lower fixture (2), is used to position the back cover to ensure the accuracy of painting; The first suction cup (5) is disposed on the bottom surface of the lower fixture (2) and extends through the lower fixture (2) into the lower fixture (2); The second suction cup (6) is symmetrically mounted on the upper end face of the upper fixture (1) and extends through the upper fixture (1).

2. The jig for spraying paint inside a mobile phone back cover according to claim 1, characterized in that: The positioning part (32) includes a shaped rod (321), a push block (322), and a rubber sleeve (323). The bottom face of the lower fixture (2) is provided with multiple sliding grooves (21). The sliding grooves (21) are connected to the interior of the lower fixture (2). The shaped rod (321) is slidably connected in the sliding grooves (21). One end of the shaped rod (321) extends into the lower fixture (2), and the other end extends out of the lower fixture (2). The push block (322) is installed at the end of the shaped rod (321) that extends out of the lower fixture (2). The rubber sleeve (323) is fitted on the outer wall of the push block (322) to wrap the multiple push blocks (322). The end of the shaped rod (321) that extends into the lower fixture (2) is connected to the adjustment part (31) for transmission.

3. The fixture for spraying paint inside a mobile phone back cover according to claim 2, characterized in that: The adjustment part (31) includes a driving member and a locking member. The driving member is rotatably connected inside the upper fixture (1) and is connected to the shaped rod (321) in a transmission manner. The locking member is disposed on the upper end face of the upper fixture (1) and is used to lock the driving member.

4. A jig for spraying paint inside a mobile phone back cover according to claim 3, characterized in that: The driving component includes a rotating shaft (311), symmetrically arranged gears (312) and ratchet (313). The rotating shaft (311) is rotatably connected to the upper fixture (1) and extends through the upper fixture (1). The gears (312) are symmetrically installed at one end of the rotating shaft (311) located in the upper fixture (1). The outer wall of the shaped rod (321) is provided with a rack (324) that meshes with the gear (312). The bottom surface of the ratchet (313) is provided with an inwardly recessed groove (314). The ratchet (313) is slidably connected to the end of the rotating shaft (311) that extends out of the upper fixture (1) through the groove (314).

5. A jig for spraying paint inside a mobile phone back cover according to claim 4, characterized in that: The groove (314) is symmetrically provided with guide grooves (316), and the outer wall of the rotating shaft (311) is provided with guide blocks (317) that are slidably connected to the guide grooves (316).

6. A jig for spraying paint inside a mobile phone back cover according to claim 5, characterized in that: A first spring (315) is provided in the groove (314), and the two ends of the first spring (315) are respectively connected to the top wall of the groove (314) and the upper end face of the rotating shaft (311).

7. A jig for spraying paint inside a mobile phone back cover according to claim 4, characterized in that: The locking element includes a sleeve (318) and a toothed band (319). The sleeve (318) is mounted on the upper end face of the upper fixture (1) and is coaxially mounted with the ratchet (313). The toothed band (319) is disposed on the inner wall of the sleeve (318) and engages with the ratchet (313).

8. A jig for spraying paint inside a mobile phone back cover according to claim 1, characterized in that: The positioning component (4) includes a mounting cylinder (41), a positioning rod (42), a second spring (43), and a fixing rod (44). The mounting cylinder (41) is installed on the outer wall of the lower fixture (2). The positioning rod (42) is slidably connected inside the mounting cylinder (41) and extends through the lower fixture (2). The second spring (43) is disposed inside the mounting cylinder (41) and its two ends are fixedly connected to the positioning rod (42) and the mounting cylinder (41) respectively. The outer wall of the positioning rod (42) is provided with a through groove (421). The outer wall of the mounting cylinder (41) is provided with an opening (411) corresponding to the through groove (421). The opening (411) and the through groove (421) are both fitted with the fixing rod (44). The fixing rod (44) is movably connected inside the opening (411) and extends into the through groove (421).

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