A screen printing device for mobile phone back cover

Abstract

The present application relates to the field of screen printing processing of mobile phone back covers, and in particular to a screen printing device for mobile phone back covers, comprising a support platform, the top of the support platform is connected to a vertical plate, the surface of the vertical plate is equipped with a screen printing mechanism, the screen printing mechanism comprises a screen printing plate, the top of the screen printing plate is provided with a scraper, both sides of the screen printing plate are connected to a horizontal tube, the top of the horizontal tube is connected to a vertical tube, the surface of the vertical tube is sleeved with a first horizontal plate, the surface of the vertical tube is sleeved with a first spring, and the top of the first horizontal plate is connected to a first electric push rod. The present application sets a screen printing plate, a scraper, a horizontal tube, a vertical tube, a first horizontal plate, a first spring and a first electric push rod. In the process of screen printing on the back cover of the mobile phone, the screen printing plate is attached to the surface of the back cover of the mobile phone, and the scraper is driven to press on the surface of the screen printing plate, and the screen printing plate is moved back and forth to scrape ink, so that the screen printing plate is in close contact with the back cover of the mobile phone, the screen printing effect is good, and the screen printing quality of the back cover of the mobile phone is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of silk screen processing of mobile phone back covers, and in particular to a silk screen device for mobile phone back covers. Background Art

[0002] The screen printing device for the back cover of a mobile phone is a high-precision and high-efficiency printing device. It uses screen printing technology to accurately print the required texture, pattern or text on the surface of the back cover of the mobile phone. The device is widely used in the mobile phone manufacturing industry to provide personalized decorative effects for the back cover of the mobile phone, thereby improving the aesthetics and market competitiveness of the product. In the traditional screen printing process of the back cover of a mobile phone, the scraper is moved manually to scrape the ink on the screen printing screen so that the screen printing screen fits the back cover of the mobile phone. Due to the long length of the scraper, the force of the manually operated scraper is uneven, which makes the screen printing screen not fit tightly to the back cover of the mobile phone, affecting the printing quality.

[0003] For example: The Chinese utility model patent (application number: 202321930189.5) discloses a "silk screen printing device for mobile phone back covers". Its specification discloses: During the printing process, one hand is required to press the screen printing plate to fix its position, and the other hand is used to use a scraper for printing. In order to facilitate the operator's use, the scraper often does not cover the entire frame. When printing on the back cover of a mobile phone, multiple mobile phone back covers are often placed side by side for printing, which increases the length of the frame. During printing, there may be uneven force stability, which affects the printing results. Therefore, in view of the current situation, it is now necessary to improve it. The above patent can prove the defects of the prior art.

[0004] Therefore, we make improvements to this and propose a silk screen printing device for the back cover of a mobile phone. Summary of the invention

[0005] The purpose of the present invention is to solve the existing problem that the screen printing screen plate and the back cover of the mobile phone are not closely attached due to the uneven force of the manually operated scraper, which affects the printing quality.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a screen printing device for a mobile phone back cover to improve the above-mentioned problem.

[0007] The specific application is as follows:

[0008] A screen printing device for a mobile phone back cover comprises a support platform, the top of the support platform is connected to a vertical plate, a screen printing mechanism is installed on the surface of the vertical plate, the screen printing mechanism comprises a screen printing plate, a scraper is arranged on the top of the screen printing plate, both sides of the screen printing plate are connected to horizontal tubes, the top of the horizontal tube is connected to a vertical tube, the surface of the vertical tube is sleeved with a first horizontal plate, the surface of the vertical tube is sleeved with a first spring, the top of the first horizontal plate is connected to a first electric push rod, the surface of the first electric push rod is sleeved with a second horizontal plate, the bottom of the second horizontal plate is connected to a vertical rod, the bottom of the vertical rod is connected to a gear, and one side of the gear is meshed with a rack.

[0009] As a preferred technical solution of the present application, a long hole is opened on the surface of the first horizontal plate, the vertical tube passes through the long hole and is movably connected to the long hole, both sides of the first horizontal plate are connected with driving tubes, the driving tube is sleeved on the surface of the vertical rod, the top of the vertical rod surface is provided with a positive threaded protrusion, the bottom of the vertical rod surface is provided with a reverse threaded protrusion, the upper and lower sides of the driving tube surface are penetrated and connected with a first spring telescopic rod, one end of the first spring telescopic rod passes through the inner cavity of the driving tube and is provided with an inclined surface.

[0010] As a preferred technical solution of the present application, a first L-shaped plate is connected to both sides of the top of the silk-screen plate, the first L-shaped plate is used in conjunction with a gear, the bottom of the first L-shaped plate is connected to the silk-screen plate, the top of the silk-screen plate is connected to a second electric push rod, and the rear side of the second electric push rod is connected to the vertical plate.

[0011] As a preferred technical solution of the present application, a plug is connected to a side opposite to the horizontal tube, an end of the plug away from the horizontal tube penetrates into the inner cavity of the scraper, a leakage hole is provided on the surface of the scraper, a one-way liquid outlet valve is connected to one side of the vertical tube, a telescopic cover is connected to a side of the one-way liquid outlet valve away from the vertical tube, the bottom of the telescopic cover is connected to the first horizontal plate, the top of the vertical tube is connected to a docking plate, the top of the telescopic cover is connected to the docking plate, and the inner wall of the telescopic cover is connected to a frame.

[0012] As a preferred technical solution of the present application, the surface of the docking plate is connected to a second spring telescopic rod through a support block, a semicircular groove is provided on the opposite side of the docking plate, the top of the second horizontal plate is connected to a third spring telescopic rod, one side of the third spring telescopic rod is connected to a moving block, square holes are provided on both sides of the top of the second horizontal plate, and the bottom of the moving block passes through the square hole and is connected to an electromagnet.

[0013] As a preferred technical solution of the present application, the surface of the telescopic cover is connected to a U-shaped tube, the top of the U-shaped tube is connected to a long hose, the end of the long hose away from the U-shaped tube is connected to a one-way liquid inlet valve, one side of the one-way liquid inlet valve is connected to a liquid storage tank, the bottom of the liquid storage tank is connected to the second horizontal plate, and the top of the liquid storage tank is provided with a box cover.

[0014] As a preferred technical solution of the present application, a feeding mechanism is installed on the surface of the vertical plate, and the feeding mechanism includes a first linear motor, which is embedded in the inner wall of the vertical plate, and the surface of the first linear motor is connected to a driving plate through a sliding seat, and a third electric push rod is connected to the top of the driving plate, and a second linear motor is connected to the bottom of the third electric push rod, and a movable plate is sleeved on the bottom of the second linear motor, and a sleeve plate is connected to the bottom of the movable plate, and a square tube is penetrated and connected between the two sleeve plates, and the bottom of the square tube is connected to a first short tube, and the bottom of the first short tube is sleeved on the second short tube.

[0015] As a preferred technical solution of the present application, a second spring is sleeved on the surface of the first short tube and the second short tube, the top of the second spring is connected to the square tube, the bottom of the second short tube is connected to a flat tube, the bottom of the second spring is connected to the flat tube, the top of the flat tube is connected to a telescopic hose, the side of the telescopic hose away from the flat tube is connected to a feeding pipe, the bottom of the feeding pipe is connected to a suction cup, the inner wall of the square tube is connected to a heating strip, the top of the feeding pipe is connected to a guide plate, one side of the guide plate is connected to a limiting plate, the top of the guide plate is sleeved with a balance plate, and the top of the balance plate is connected to the sleeve plate.

[0016] As a preferred technical solution of the present application, the bottom of the flat tube is connected to a support plate, one side of the feeding tube is connected to a first guide rod, the side of the first guide rod away from the feeding tube passes through the support plate, the surface of the first guide rod is sleeved with a third spring, one side of the first guide rod is connected to a limiting block, the surface of the feeding tube is connected to an inclined plate through a rotating shaft, one side of the inclined plate is connected to a connecting block through a rotating shaft, and the surface of the connecting block is passed through and connected with a threaded rod.

[0017] As a preferred technical solution of the present application, the threaded rod passes through the connecting block and is threadedly connected to the connecting block, one side of the threaded rod is connected to a second L-shaped plate, one side of the second L-shaped plate is connected to a spring telescopic plate, the surface of the second L-shaped plate is connected to a second guide rod, the side of the second guide rod away from the second L-shaped plate passes through the connecting block and is movably connected to the connecting block, the front side of the support platform is connected to a feeding conveyor belt, and the rear side of the support platform is connected to a material transfer conveyor belt.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the scheme of this application:

[0020] 1. In order to solve the problem in the prior art that the silk screen screen is not closely attached to the back cover of the mobile phone due to uneven force on the manually operated scraper, which affects the printing quality, the present application sets a silk screen plate, a scraper, a horizontal tube, a vertical tube, a first horizontal plate, a first spring and a first electric push rod. In the process of silk screen printing on the back cover of the mobile phone, the silk screen plate is attached to the surface of the back cover of the mobile phone, and the scraper is driven to press on the surface of the silk screen plate, and the silk screen plate is moved back and forth to scrape the ink, so that the silk screen plate is in close contact with the back cover of the mobile phone, the silk screen effect is good, and the silk screen quality of the back cover of the mobile phone is greatly improved;

[0021] 2. By setting a driving tube, a positive thread protrusion, a reverse thread protrusion, a first spring telescopic rod and an inclined plane, when the first spring telescopic rod at the bottom moves downward, it squeezes the reverse thread protrusion, so that the vertical rod can rotate in the opposite direction, and the vertical rod drives the gear to rotate in the opposite direction, and the gear cooperates with the rack to drive the scraper to move, and the back cover of the mobile phone is screen-printed. When the first spring telescopic rod at the top moves upward, it squeezes the positive thread protrusion, so that the vertical rod rotates forward, and then the scraper returns to its position, which is convenient for adjusting the position of the scraper;

[0022] 3. By setting the insert tube, the leakage hole, the one-way liquid outlet valve, the telescopic cover and the docking plate, when the telescopic cover is compressed, the ink in the inner cavity of the telescopic cover enters the inner cavity of the scraper, and then is discharged into the screen printing plate through the leakage hole, which is convenient for adding ink to the screen printing plate. By cooperating with the U-shaped tube, the long hose, the one-way liquid inlet valve and the liquid storage tank, when the telescopic cover is stretched back, the one-way liquid inlet valve is opened, and the ink in the inner cavity of the liquid storage tank enters the inner cavity of the telescopic cover for replenishment, and the cycle repeats;

[0023] 4. By arranging the sleeve plate, the square tube, the first short tube, the second short tube, the second spring, the flat tube, the telescopic hose, the feeding tube and the suction cup, when the two sleeve plates are away from each other, the inner cavity of the square tube generates negative pressure, so that the suction cup adsorbs the back cover of the mobile phone, which is convenient for moving and loading the back cover of the mobile phone, without manual loading, reducing the operator's workload and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the silk screen printing device for the back cover of a mobile phone provided in this application;

[0025] Figure 2 A schematic diagram of the silk screen printing mechanism of the silk screen printing device for the back cover of a mobile phone provided in this application;

[0026] Figure 3 A schematic cross-sectional view of a telescopic cover of a silk-screen printing device for a mobile phone back cover provided in this application;

[0027] Figure 4 A rear view schematic diagram of a U-shaped tube and a long hose of a silk-screen printing device for a mobile phone back cover provided in this application;

[0028] Figure 5 A schematic cross-sectional view of a drive tube and a first spring telescopic rod of the silk-screen printing device for a mobile phone back cover provided in the present application;

[0029] Figure 6 A schematic diagram of a feeding mechanism of a silk-screen printing device for a mobile phone back cover provided in this application;

[0030] Figure 7 A schematic cross-sectional view of a sleeve plate and a square tube of a silk-screen printing device for a mobile phone back cover provided in this application;

[0031] Figure 8 Schematic diagram of the first short tube and the second short tube of the silk-screen printing device for the back cover of a mobile phone provided in this application;

[0032] Fig. 9 This is a bottom view schematic diagram of the first guide rod and the third spring of the silk-screen printing device for the back cover of a mobile phone provided in this application.

[0033] Indicated in the figure:

[0034] 1. Support platform; 2. Vertical plate; 3. Silk-screen mechanism; 30. Silk-screen plate; 31. Scraper; 32. Horizontal tube; 33. Vertical tube; 34. First horizontal plate; 35. First spring; 36. First electric push rod; 37. Second horizontal plate; 38. Vertical rod; 39. Gear; 310. Rack; 311. Long hole; 312. Driving tube; 313. Forward thread protrusion; 314. First spring telescopic rod; 315. Inclined surface; 316. First L-shaped plate; 317, second electric push rod; 318, cannula; 319, leakage hole; 320, one-way liquid outlet valve; 321, telescopic cover; 322, docking plate; 323, frame; 324, second spring telescopic rod; 325, third spring telescopic rod; 326, moving block; 327, square hole; 328, electromagnet; 329, U-shaped tube; 330, long hose; 331, one-way liquid inlet valve; 332, liquid storage tank; 333, reverse thread protrusion;

[0035] 4. Feeding mechanism; 40. First linear motor; 41. Driving plate; 42. Third electric push rod; 43. Second linear motor; 44. Moving plate; 45. Sleeve plate; 46. Square tube; 47. First short tube; 48. Second short tube; 49. Second spring; 410. Flat tube; 411. Telescopic hose; 412. Feeding tube; 413. Suction cup; 414. Heating strip; 415. Guide plate; 416. Limiting plate; 417. Balance plate; 418. Support plate; 419. First guide rod; 420. Third spring; 421. Inclined plate; 422. Connecting block; 423. Threaded rod; 424. Second L-shaped plate; 425. Spring telescopic plate; 426. Second guide rod; 5. Feeding conveyor belt; 6. Transfer conveyor belt. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0037] As described in the background art, due to the uneven force applied to the manually operated scraper, the screen printing screen is not closely attached to the back cover of the mobile phone, which affects the printing quality.

[0038] In order to solve this technical problem, the present invention provides a silk screen printing device for a mobile phone back cover, which is applied to the field of silk screen printing processing of mobile phone back covers.

[0039] Specifically, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A screen printing device for a mobile phone back cover comprises a support platform 1, a vertical plate 2 is connected to the top of the support platform 1, a screen printing mechanism 3 is installed on the surface of the vertical plate 2, the screen printing mechanism 3 comprises a screen printing plate 30, a scraper 31 is arranged on the top of the screen printing plate 30, both sides of the screen printing plate 30 are connected with horizontal tubes 32, the top of the horizontal tube 32 is connected with a vertical tube 33, the surface of the vertical tube 33 is sleeved with a first horizontal plate 34, the surface of the vertical tube 33 is sleeved with a first spring 35, the top of the first horizontal plate 34 is connected with a first electric push rod 36, the surface of the first electric push rod 36 is sleeved with a second horizontal plate 37, the bottom of the second horizontal plate 37 is connected with a vertical rod 38, the bottom of the vertical rod 38 is connected with a gear 39, and one side of the gear 39 is meshed with a rack 310.

[0040] In the process of silk-screening the back cover of the mobile phone, the silk-screen plate 30 is attached to the surface of the back cover of the mobile phone, and the scraper 31 is driven to press on the surface of the silk-screen plate 30, and the silk-screen plate 30 is moved back and forth to scrape the ink, so that the silk-screen plate 30 is in close contact with the back cover of the mobile phone, the silk-screen effect is good, and the silk-screen quality of the back cover of the mobile phone is greatly improved.

[0041] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A screen printing device for a mobile phone back cover comprises a support platform 1, a vertical plate 2 is connected to the top of the support platform 1, a screen printing mechanism 3 is installed on the surface of the vertical plate 2, the screen printing mechanism 3 comprises a screen printing plate 30, a scraper 31 is arranged on the top of the screen printing plate 30, both sides of the screen printing plate 30 are connected with horizontal tubes 32, the top of the horizontal tube 32 is connected with a vertical tube 33, the surface of the vertical tube 33 is sleeved with a first horizontal plate 34, the surface of the vertical tube 33 is sleeved with a first spring 35, the top of the first horizontal plate 34 is connected with a first electric push rod 36, the surface of the first electric push rod 36 is sleeved with a second horizontal plate 37, the bottom of the second horizontal plate 37 is connected with a vertical rod 38, the bottom of the vertical rod 38 is connected with a gear 39, and one side of the gear 39 is meshed with a rack 310.

[0045] By arranging the screen printing plate 30, the scraper 31, the horizontal tube 32, the vertical tube 33, the first horizontal plate 34, the first spring 35 and the first electric push rod 36, during the screen printing process on the back cover of the mobile phone, the screen printing plate 30 is attached to the surface of the back cover of the mobile phone, and the scraper 31 is driven to press on the surface of the screen printing plate 30, and the screen printing plate 30 is moved back and forth to scrape the ink, so that the screen printing plate 30 is in close contact with the back cover of the mobile phone, the screen printing effect is good, and the screen quality of the back cover of the mobile phone is greatly improved.

[0046] A long hole 311 is provided on the surface of the first horizontal plate 34, and the vertical tube 33 passes through the long hole 311 and is movably connected to the long hole 311. Both sides of the first horizontal plate 34 are connected with driving tubes 312, and the driving tube 312 is sleeved on the surface of the vertical rod 38. The top of the surface of the vertical rod 38 is provided with a positive thread protrusion 313, and the bottom of the surface of the vertical rod 38 is provided with a reverse thread protrusion 333. The upper and lower sides of the surface of the driving tube 312 are penetrated and connected with the first spring telescopic rod 314, and one end of the first spring telescopic rod 314 passes through the inner cavity of the driving tube 312 and is provided with a slope 315.

[0047] By setting the long hole 311, the vertical tube 33 is guided to facilitate the lateral movement of the vertical tube 33. By setting the driving tube 312, the positive thread protrusion 313, the reverse thread protrusion 333, the first spring telescopic rod 314 and the inclined surface 315, the first spring telescopic rod 314 at the bottom squeezes the reverse thread protrusion 333 when moving downward, so that the vertical rod 38 can rotate in the opposite direction, and the vertical rod 38 drives the gear 39 to rotate in the opposite direction. The gear 39 cooperates with the rack 310 to drive the scraper 31 to move, and the back cover of the mobile phone is silk-screened. When the first spring telescopic rod 314 at the top moves upward, it squeezes the positive thread protrusion 313 to make the vertical rod 38 rotate in the positive direction, and then the scraper 31 returns to its original position, which is convenient for adjusting the position of the scraper 31.

[0048] The first L-shaped plate 316 is connected to both sides of the top of the silk screen plate 30. The first L-shaped plate 316 is used in conjunction with the gear 39. The bottom of the first L-shaped plate 316 is connected to the silk screen plate 30. The top of the silk screen plate 30 is connected to the second electric push rod 317. The rear side of the second electric push rod 317 is connected to the vertical plate 2.

[0049] The first L-shaped plate 316 is provided to limit the gear 39 so that the gear 39 can stably move forward and backward and mesh closely with the rack 310 . The second electric push rod 317 is provided to facilitate driving the screen printing plate 30 to move vertically.

[0050] The opposite side of the horizontal tube 32 is connected with a plug 318, and the end of the plug 318 away from the horizontal tube 32 passes through the inner cavity of the scraper 31. A leakage hole 319 is opened on the surface of the scraper 31, and a one-way liquid outlet valve 320 is connected to one side of the vertical tube 33. The side of the one-way liquid outlet valve 320 away from the vertical tube 33 is connected with a telescopic cover 321, the bottom of the telescopic cover 321 is connected to the first horizontal plate 34, the top of the vertical tube 33 is connected to the docking plate 322, the top of the telescopic cover 321 is connected to the docking plate 322, and the inner wall of the telescopic cover 321 is connected to the frame 323.

[0051] By setting a frame 323, the inner wall of the telescopic cover 321 is supported, so that the telescopic cover 321 can remain in an open state when it is stretched. By setting a plug 318, a leakage hole 319, a one-way liquid outlet valve 320, a telescopic cover 321 and a docking plate 322, when the telescopic cover 321 is compressed, the ink in the inner cavity of the telescopic cover 321 enters the inner cavity of the scraper 31, and then is discharged into the silk screen plate 30 through the leakage hole 319, so that ink can be added to the silk screen plate 30.

[0052] The surface of the docking plate 322 is connected to the second spring telescopic rod 324 through a support block, a semicircular groove is provided on the opposite side of the docking plate 322, the top of the second cross plate 37 is connected to the third spring telescopic rod 325, one side of the third spring telescopic rod 325 is connected to a moving block 326, square holes 327 are provided on both sides of the top of the second cross plate 37, and the bottom of the moving block 326 passes through the square hole 327 and is connected to an electromagnet 328.

[0053] By setting the second spring telescopic rod 324, the two docking plates 322 are closely fitted together, which is convenient for the docking plate 322 to return. By setting the third spring telescopic rod 325, a pulling force is generated on the moving block 326, which is convenient for the moving block 326 to drive the electromagnet 328 to return. By setting the square hole 327, the lateral movement of the moving block 326 is convenient.

[0054] The surface of the telescopic cover 321 is connected to a U-shaped tube 329, the top of the U-shaped tube 329 is connected to a long hose 330, one end of the long hose 330 away from the U-shaped tube 329 is connected to a one-way liquid inlet valve 331, one side of the one-way liquid inlet valve 331 is connected to a liquid storage tank 332, the bottom of the liquid storage tank 332 is connected to the second cross plate 37, and the top of the liquid storage tank 332 is provided with a box cover.

[0055] By setting up a liquid storage tank 332, it is convenient to store ink. By setting up a box cover, the top of the liquid storage tank 332 is covered. By cooperating with the U-tube 329, the long hose 330, the one-way liquid inlet valve 331 and the liquid storage tank 332, when the telescopic cover 321 is extended and returned to its original position, the one-way liquid inlet valve 331 opens, and the ink in the inner cavity of the liquid storage tank 332 enters the inner cavity of the telescopic cover 321 for replenishment, and the cycle repeats.

[0056] Embodiment 2 further optimizes the screen printing device for the mobile phone back cover provided in Embodiment 1. Specifically, Figure 1 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, a feeding mechanism 4 is installed on the surface of the vertical plate 2, and the feeding mechanism 4 includes a first linear motor 40, which is embedded in the inner wall of the vertical plate 2, and the surface of the first linear motor 40 is connected to a driving plate 41 through a sliding seat, and a third electric push rod 42 is penetrated and connected to the top of the driving plate 41, and a second linear motor 43 is connected to the bottom of the third electric push rod 42, and a moving plate 44 is sleeved on the bottom of the second linear motor 43, and a sleeve plate 45 is connected to the bottom of the moving plate 44, and a square tube 46 is penetrated and connected between the two sleeve plates 45, and the bottom of the square tube 46 is connected to a first short tube 47, and the bottom of the first short tube 47 is sleeved with a second short tube 48.

[0057] The square tube 46 is provided to support the sleeve plate 45 , so that the two sleeve plates 45 can be separated from and brought close to each other, and the square tube 46 and the inner cavity gas of the sleeve plate 45 can be communicated.

[0058] The surfaces of the first short tube 47 and the second short tube 48 are sleeved with a second spring 49, the top of the second spring 49 is connected to the square tube 46, the bottom of the second short tube 48 is connected to a flat tube 410, the bottom of the second spring 49 is connected to the flat tube 410, the top of the flat tube 410 is connected to a telescopic hose 411, the side of the telescopic hose 411 away from the flat tube 410 is connected to a feeding tube 412, the bottom of the feeding tube 412 is connected to a suction cup 413, the inner wall of the square tube 46 is connected to a heating strip 414, the top of the feeding tube 412 is connected to a guide plate 415, one side of the guide plate 415 is connected to a limiting plate 416, the top of the guide plate 415 is sleeved with a balancing plate 417, and the top of the balancing plate 417 is connected to the sleeve plate 45.

[0059] By arranging the sleeve plate 45, the square tube 46, the first short tube 47, the second short tube 48, the second spring 49, the flat tube 410, the telescopic hose 411, the feeding tube 412 and the suction cup 413, when the two sleeve plates 45 move away from each other, the inner cavity of the square tube 46 generates negative pressure, so that the suction cup 413 adsorbs the back cover of the mobile phone, which is convenient for moving and loading the back cover of the mobile phone without manual loading, reducing the operator's workload and improving processing efficiency. By arranging the second spring 49, the flat tube 410 is connected, so that the suction cup 413 is tightly attached to the surface of the back cover of the mobile phone, which is convenient for the adsorption and positioning of the back cover of the mobile phone. By arranging the telescopic hose 411, the flat tube 410 is convenient for communicating with the inner cavity gas of the feeding tube 412, and at the same time, the two feeding tubes 412 are convenient for separation and approaching each other. By arranging the guide plate 415 and the balance plate 417, the sleeve plate 45 is balanced and supported, which is convenient for the relative movement of the two sleeve plates 45.

[0060] A support plate 418 is connected to the bottom of the flat tube 410, a first guide rod 419 is connected to one side of the feed tube 412, a side of the first guide rod 419 away from the feed tube 412 passes through the support plate 418, a third spring 420 is sleeved on the surface of the first guide rod 419, a limiting block is connected to one side of the first guide rod 419, a slant plate 421 is connected to the surface of the feed tube 412 via a rotating shaft, a connecting block 422 is connected to one side of the slant plate 421 via a rotating shaft, a threaded rod 423 is passed through the surface of the connecting block 422.

[0061] By setting the first guide rod 419, the feeding tube 412 is guided to facilitate the movement of the feeding tube 412. By setting the third spring 420, the limit block is tensioned to facilitate the limit block to drive the first guide rod 419 and the feeding tube 412 to return to their original positions.

[0062] Embodiment 3 further optimizes the screen printing device for the mobile phone back cover provided in Embodiment 1 or 2. Specifically, Figure 7 and Fig. 9As shown, the threaded rod 423 passes through the connecting block 422 and is threadedly connected to the connecting block 422, one side of the threaded rod 423 is connected to the second L-shaped plate 424, one side of the second L-shaped plate 424 is connected to the spring telescopic plate 425, the surface of the second L-shaped plate 424 is connected to the second guide rod 426, the side of the second guide rod 426 away from the second L-shaped plate 424 passes through the connecting block 422 and is movably connected to the connecting block 422, the front side of the support platform 1 is connected to the feeding conveyor belt 5, and the rear side of the support platform 1 is connected to the material transfer conveyor belt 6.

[0063] By setting the feeding tube 412, the inclined plate 421, the connecting block 422, the threaded rod 423, the second L-shaped plate 424 and the spring telescopic plate 425, when the two feeding tubes 412 are away from each other, the two spring telescopic plates 425 can be driven to approach each other, so as to clamp and position the back cover of the mobile phone, so that the placement position of the back cover of the mobile phone can be more accurate, and the pattern printing position can be accurate. By setting the second guide rod 426, the second L-shaped plate 424 is guided to facilitate the movement of the second L-shaped plate 424. By setting the feeding conveyor belt 5, the back cover of the mobile phone can be transported to the movement of the support platform 1. By setting the material transfer conveyor belt 6, the processed back cover of the mobile phone can be transported to the next processing step.

[0064] The use process of the screen printing device for the mobile phone back cover provided by the present invention is as follows:

[0065] S1, loading: The mobile phone back cover is conveyed to one side of the support platform 1 through the feeding conveyor belt 5, and the driving plate 41 is driven to move by controlling the first linear motor 40 to drive the suction cup 413 to move to the bottom of the mobile phone back cover, and the third electric push rod 42 is controlled to extend to drive the second linear motor 43, the moving plate 44 and the suction cup 413 to move downward, so that the suction cup 413 fits the surface of the mobile phone back cover, and the second linear motor 43 is controlled to operate, and the moving plate 44 drives the sleeve plate 45 to move, so that the two The cover plate 45 is separated, so that negative pressure is generated in the inner cavity of the square tube 46, and then the gas in the inner cavity of the feeding tube 412 passes through the telescopic hose 411, the telescopic hose 411, the flat tube 410, the second short tube 48 and the first short tube 47 in sequence into the inner cavity of the square tube 46, so that negative pressure is generated in the inner cavity of the suction cup 413, and the back cover of the mobile phone is firmly sucked. The suction cup 413 is moved upward by operation to lift the back cover of the mobile phone, and then it is moved to the support platform 1. The two cover plates 45 are moved close to each other by operation, so that the suction cup 413 is separated from the back cover of the mobile phone;

[0066] S2, positioning: rotating the threaded rod 423 to drive the second L-shaped plate 424 and the spring telescopic plate 425 to move, adjusting the distance between the spring telescopic plate 425 and the feeding tube 412, and controlling the second linear motor 43 to operate so that the two sleeve plates 45 are separated from each other, the sleeve plate 45 drives the balance plate 417 to move, the balance plate 417 drives the limit plate 416 to move, the limit plate 416 drives the feeding tube 412 to move, the feeding tube 412 drives the connecting block 422 to move through the inclined plate 421, and the connecting block 422 drives the second L-shaped plate 424 and the spring telescopic plate 425 to move through the threaded rod 423, so that the two spring telescopic plates 425 are close to each other to push the mobile phone back cover to move, so that the back covers of multiple mobile phones are in close contact, and then the back covers of the mobile phones are positioned;

[0067] S3, screen printing: The first linear motor 40 is operated to drive the driving plate 41 and the suction cup 413 to move, so that the driving plate 41 moves to one side of the screen printing plate 30, and the second electric push rod 317 is controlled to run and extend to drive the screen printing plate 30 to move downward, so that the bottom of the screen printing plate 30 contacts the back cover of the mobile phone, and the first electric push rod 36 is controlled to run and extend to drive the first horizontal plate 34 to move downward, and the first horizontal plate 34 drives the first spring 35, the horizontal tube 32 and the scraper 31 to move downward, and the scraper 31 contacts the screen printing plate 30, and the first horizontal plate 34 is continuously controlled to move downward, and the first horizontal plate 34 The driving tube 312 and the first spring telescopic rod 314 at the bottom are driven to move downward, and one end of the first spring telescopic rod 314 at the bottom squeezes the reverse thread protrusion 333, so that the vertical rod 38 drives the gear 39 to rotate in the opposite direction, so that the gear 39 moves backward, and then drives the scraper 31 to move upward, and the printing operation is performed on the back cover of the mobile phone. When the first spring telescopic rod 314 at the bottom moves upward, the inclined surface 315 contacts and is squeezed by the reverse thread protrusion 333, so that the first spring telescopic rod 314 returns to its original position and shrinks and separates from the reverse thread protrusion 333, which can prevent the vertical rod 38 and the gear 39 from rotating forward.

[0068] S4, adjustment: when the first electric push rod 36 contracts, it drives the first horizontal plate 34 to move upward, so that the driving tube 312 drives the upper first spring telescopic rod 314 to move upward, and the upper first spring telescopic rod 314 squeezes the upper positive thread protrusion 313, so that the vertical rod 38 drives the gear 39 to rotate forward, so that the gear 39 moves forward, and then drives the scraper 31 to move forward, so that the scraper returns to its original position. When the upper first spring telescopic rod 314 moves downward, the inclined surface 315 contacts and is squeezed by the positive thread protrusion 313, so that the first spring telescopic rod 314 returns to its original position and contracts to separate from the reverse thread protrusion 333, so as to prevent the vertical rod 38 and the gear 39 from rotating in the reverse direction.

[0069] S5, drying: after the screen printing is completed, the screen printing plate 30 is moved upward and returned to its original position, and the suction cup 413 is moved to the top of the back cover of the mobile phone by operation, and the heating strip 414 is controlled to operate and heat, so that hot air is generated in the inner cavity of the square tube 46, and the hot air is driven away by bringing the two sets of plates 45 close to each other. The hot air passes through the first short tube 47, the second short tube 48, the flat tube 410, the telescopic hose 411, the feeding tube 412 and the suction cup 413 in sequence, and blows to the surface of the back cover of the mobile phone to dry the pattern;

[0070] S6, unloading: after drying is completed, the hot air in the inner cavity of the feeding tube 412 is discharged, and then the back cover of the mobile phone is sucked by the suction cup 413, and it is moved to the material conveying conveyor belt 6, and the back cover of the mobile phone is conveyed to the next process;

[0071] S7, adding ink: by controlling the first electric push rod 36 to contract and drive the first transverse plate 34 to move upward, the first transverse plate 34 drives the telescopic cover 321 and the docking plate 322 to move upward, the docking plate 322 moves upward and contacts the electromagnet 328, so that the docking plate 322 stops moving upward, and the first transverse plate 34 continues to compress the telescopic cover 321 upward to open the one-way liquid outlet valve 320, and the ink in the inner cavity of the telescopic cover 321 passes through the one-way liquid outlet valve 320, the vertical pipe 33, the horizontal pipe 32, the insert pipe 318 and the scraper 31 in turn, and finally is discharged to the screen printing plate 30 through the leakage hole 319. When the telescopic cover 321 is stretched, the one-way liquid inlet valve 331 is opened, and the ink in the inner cavity of the liquid storage tank 332 passes through the long hose 330 and the U-shaped tube 329 in turn, and finally enters the inner cavity of the telescopic cover 321 for replenishment, and the cycle repeats;

[0072] S8. Disassembly: energize the electromagnet 328 so that the two electromagnets 328 are attracted and contacted, and the docking plate 322 is moved upward through operation so that the bottom of the electromagnet 328 enters the inner cavity of the semicircular groove, and the docking plate 322 continues to move upward to separate the two docking plates 322. The docking plate 322 drives the vertical pipe 33, the horizontal pipe 32 and the insert pipe 318 to move, so that the insert pipe 318 is separated from the scraper 31, and then the scraper 31 is disassembled, which is convenient for cleaning, replacement and maintenance of the scraper 31.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A screen printing device for a mobile phone back cover, characterized in that: The invention comprises a support platform (1), the top of the support platform (1) is connected to a vertical plate (2), a surface of the vertical plate (2) is provided with a screen printing mechanism (3), the screen printing mechanism (3) comprises a screen printing plate (30), the top of the screen printing plate (30) is provided with a scraper (31), both sides of the screen printing plate (30) are connected to horizontal tubes (32), the top of the horizontal tube (32) is connected to a vertical tube (33), the surface of the vertical tube (33) is sleeved with a first horizontal plate (34), the surface of the vertical tube (33) is sleeved with a first spring (35), the top of the first horizontal plate (34) is connected to a first electric push rod (36), the surface of the first electric push rod (36) is sleeved with a second horizontal plate (37), the bottom of the second horizontal plate (37) is connected to a vertical rod (38), the bottom of the vertical rod (38) is connected to a gear (39), and one side of the gear (39) is meshed with a rack (310); A long hole (311) is provided on the surface of the first horizontal plate (34), the vertical tube (33) passes through the long hole (311) and is movably connected to the long hole (311), both sides of the first horizontal plate (34) are connected to driving tubes (312), the driving tube (312) is sleeved on the surface of the vertical rod (38), the top of the surface of the vertical rod (38) is provided with a positive thread protrusion (313), the bottom of the surface of the vertical rod (38) is provided with a reverse thread protrusion (333), the upper and lower sides of the surface of the driving tube (312) are connected to the first spring telescopic rod (314), one end of the first spring telescopic rod (314) passes through the inner cavity of the driving tube (312) and is provided with an inclined surface (315); Both sides of the top of the screen printing plate (30) are connected to a first L-shaped plate (316), the first L-shaped plate (316) is used in conjunction with a gear (39), the bottom of the first L-shaped plate (316) is connected to the screen printing plate (30), the top of the screen printing plate (30) is connected to a second electric push rod (317), and the rear side of the second electric push rod (317) is connected to the vertical plate (2); The side opposite to the horizontal tube (32) is connected to a plug tube (318), the end of the plug tube (318) away from the horizontal tube (32) penetrates into the inner cavity of the scraper (31), the surface of the scraper (31) is provided with a liquid leakage hole (319), the side of the vertical tube (33) is connected to a one-way liquid outlet valve (320), the side of the one-way liquid outlet valve (320) away from the vertical tube (33) is connected to a telescopic cover (321), the bottom of the telescopic cover (321) is connected to the first horizontal plate (34), the top of the vertical tube (33) is connected to a docking plate (322), the top of the telescopic cover (321) is connected to the docking plate (322), and the inner wall of the telescopic cover (321) is connected to a frame (323).

2. A screen printing device for a mobile phone back cover according to claim 1, characterized in that: The surface of the docking plate (322) is connected to a second spring telescopic rod (324) via a support block; a semicircular groove is provided on the opposite side of the docking plate (322); a third spring telescopic rod (325) is connected to the top of the second transverse plate (37); a moving block (326) is connected to one side of the third spring telescopic rod (325); square holes (327) are provided on both sides of the top of the second transverse plate (37); and the bottom of the moving block (326) passes through the square hole (327) and is connected to an electromagnet (328).

3. A screen printing device for a mobile phone back cover according to claim 2, characterized in that: The surface of the telescopic cover (321) is connected to a U-shaped tube (329), the top of the U-shaped tube (329) is connected to a long hose (330), one end of the long hose (330) away from the U-shaped tube (329) is connected to a one-way liquid inlet valve (331), one side of the one-way liquid inlet valve (331) is connected to a liquid storage tank (332), the bottom of the liquid storage tank (332) is connected to the second horizontal plate (37), and the top of the liquid storage tank (332) is provided with a tank cover.

4. A screen printing device for a mobile phone back cover according to claim 3, characterized in that: A feeding mechanism (4) is installed on the surface of the vertical plate (2), and the feeding mechanism (4) comprises a first linear motor (40), the first linear motor (40) is embedded and connected to the inner wall of the vertical plate (2), the surface of the first linear motor (40) is connected to a driving plate (41) via a sliding seat, the top of the driving plate (41) is connected through a third electric push rod (42), the bottom of the third electric push rod (42) is connected to a second linear motor (43), the bottom of the second linear motor (43) is sleeved with a moving plate (44), the bottom of the moving plate (44) is connected to a sleeve plate (45), a square tube (46) is penetrated and connected between the two sleeve plates (45), the bottom of the square tube (46) is connected to a first short tube (47), and the bottom of the first short tube (47) is sleeved with a second short tube (48).

5. A screen printing device for a mobile phone back cover according to claim 4, characterized in that: A second spring (49) is sleeved on the surface of the first short tube (47) and the second short tube (48); the top of the second spring (49) is connected to the square tube (46); the bottom of the second short tube (48) is connected to a flat tube (410); the bottom of the second spring (49) is connected to the flat tube (410); the top of the flat tube (410) is connected to a telescopic hose (411); the side of the telescopic hose (411) away from the flat tube (410) is connected to a feeding tube (412); the bottom of the feeding tube (412) is connected to a suction cup (413); the inner wall of the square tube (46) is connected to a heating strip (414); the top of the feeding tube (412) is connected to a guide plate (415); one side of the guide plate (415) is connected to a limiting plate (416); the top of the guide plate (415) is sleeved with a balancing plate (417); the top of the balancing plate (417) is connected to the sleeve plate (45).

6. A screen printing device for a mobile phone back cover according to claim 5, characterized in that: The bottom of the flat tube (410) is connected to a support plate (418), one side of the feeding tube (412) is connected to a first guide rod (419), a side of the first guide rod (419) away from the feeding tube (412) passes through the support plate (418), a third spring (420) is sleeved on the surface of the first guide rod (419), one side of the first guide rod (419) is connected to a limiting block, the surface of the feeding tube (412) is connected to an inclined plate (421) via a rotating shaft, one side of the inclined plate (421) is connected to a connecting block (422) via a rotating shaft, and a threaded rod (423) passes through the surface of the connecting block (422).

7. A screen printing device for a mobile phone back cover according to claim 6, characterized in that: The threaded rod (423) passes through the connecting block (422) and is threadedly connected to the connecting block (422); one side of the threaded rod (423) is connected to a second L-shaped plate (424); one side of the second L-shaped plate (424) is connected to a spring telescopic plate (425); a surface of the second L-shaped plate (424) is connected to a second guide rod (426); a side of the second guide rod (426) away from the second L-shaped plate (424) passes through the connecting block (422) and is movably connected to the connecting block (422); a feeding conveyor belt (5) is connected to the front side of the support platform (1); and a transfer conveyor belt (6) is connected to the rear side of the support platform (1).

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