Adjustable glass printing screen inspection frame

Abstract

The invention discloses an adjustable glass printing screen inspection frame, and belongs to the field of glass manufacturing, the adjustable glass printing screen inspection frame comprises a base for supporting a glass printing screen, the bottom of the base is connected with four fixing seats, the top of the base is welded with a vertical support, the side surface of the vertical support is provided with a fixing frame for fixing the glass printing screen, and the fixing frame is connected with the base. An adjusting box used for limiting the moving direction is installed at the top of the fixing frame, a motor used for providing power is installed on the side face of the adjusting box, a threaded rod is rotationally installed in the adjusting box, an output shaft of the motor is connected with the end of the threaded rod through a coupler, and a moving block is rotationally connected to the periphery of the threaded rod. A connecting block is welded to the side face of the moving block, the bottom of the connecting block communicates with a telescopic air outlet pipe used for cleaning the glass printing screen, and the adjustable glass printing screen inspection frame can improve the cleaning capacity, prevent false inspection and improve the inspection efficiency.

Description

Technical Field

[0001] This invention belongs to the field of glass manufacturing, and in particular to an adjustable glass printing screen inspection rack. Background Technology

[0002] Screen printing is an important auxiliary tool in glass printing. It is divided into ink printing screens and silver paste printing screens, used for printing black borders, trademarks, and heating lines on glass. The quality of glass printing directly affects the appearance and performance of the product, making the inspection of glass printing screens extremely crucial. Failure to detect screen defects can lead to poor product appearance, broken heating lines, and other problems, severely impacting glass performance, causing glass scrap, and reducing product yield. From the perspective of screen inspection, incomplete cleaning can leave dust, fine ink particles, and other impurities on the screen surface. These impurities may be mistakenly identified as screen blockages during inspection, leading to false positives and reduced inspection efficiency.

[0003] A search revealed Chinese patent documents (authorization announcement number CN209764699U), which disclose an adjustable glass printing screen inspection rack. Depending on the screen size, a transmission chain drives an active sliding component and a driven sliding component to rise and fall synchronously along a guide rod to adjust the positions of the active and driven support rods. Simultaneously, the position of the adjusting rod moves laterally to accommodate various screen sizes, making it widely applicable. This device can meet basic usage needs, but its cleaning ability is relatively weak. During inspection, it may be mistakenly identified as a screen blockage point, leading to false positives and reduced inspection efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable glass printing screen inspection rack to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable glass printing screen inspection rack, comprising a base for supporting the glass printing screen, four fixed seats connected to the bottom of the base, a vertical support welded to the top of the base, and a fixing frame for fixing the glass printing screen provided on the side of the vertical support. The top of the fixed frame is equipped with an adjustment box for limiting the direction of movement. A motor for providing power is installed on the side of the adjustment box. A threaded rod is rotatably installed inside the adjustment box. The output shaft of the motor is connected to the end of the threaded rod through a coupling. A moving block is rotatably connected to the outer circumference of the threaded rod. A connecting block is welded to the side of the moving block. The bottom of the connecting block is connected to a telescopic air outlet pipe for cleaning the glass printing screen.

[0006] Preferably, the telescopic air outlet pipe is provided with multiple exhaust holes for gas ejection near the outer periphery of the vertical support, and the top of the connecting block is connected to an air inlet pipe for connecting to the outside.

[0007] Preferably, the outer periphery of the vertical support has two sliding sleeves for adjusting the height, and the outer periphery of each of the two sliding sleeves is welded with a fixing plate.

[0008] Preferably, the side of the fixing plate is provided with a plurality of toothed discs for fixing, the inside of the fixing plate is rotatably connected to a locking rod, and an angle adjustment bracket is installed on the outer periphery of the locking rod.

[0009] Preferably, the side of the angle adjustment frame is welded with a mating gear for use with the meshing gear, and the end of the locking rod is connected to a rotating handle.

[0010] Preferably, a connecting rod is welded to the side of the angle adjustment frame, the locking rod completely penetrates the interior of the angle adjustment frame, and the connecting rod is connected to the side of the fixing frame.

[0011] Preferably, the fixed frame is internally connected to multiple springs, one end of each spring is connected to a movable frame, the movable frame is slidably disposed inside the fixed frame, and a placement frame for fixing the glass printing screen is installed on the side of the movable frame.

[0012] Preferably, each of the two placement racks has a fixing block connected to its side, and a guide rod is connected between the two fixing blocks.

[0013] Preferably, a sliding block is slidably provided on the outer periphery of the guide rod, and the side of the sliding block is connected to the end of the telescopic air outlet pipe.

[0014] Preferably, the vertical support is internally connected to a slide rail, and an inspection lamp for glass printing screen inspection is slidably installed on the outer periphery of the slide rail.

[0015] Compared with the prior art, the technical effects and advantages of the present invention are as follows: This adjustable glass printing screen inspection rack benefits from the structure of the connecting block and the telescopic air outlet pipe. The connecting block and the telescopic air outlet pipe are connected by a hinge structure, which drives the telescopic air outlet pipe to perform a horizontal scanning motion along the side of the screen. The air inlet pipe is connected to the telescopic air outlet pipe through a quick-connect coupling. Clean gas (such as compressed air or inert gas) is delivered to the telescopic air outlet pipe through the air inlet pipe and finally ejected at high speed from the surface jet holes (hole diameter 0.5-1mm, hole spacing 10mm) (outlet air pressure 0.3-0.5MPa). The airflow impact force removes dust and residual ink from the screen surface. Compared with traditional adjustable glass printing screen inspection racks, which are not thorough in cleaning, this structure can improve cleaning ability, prevent false inspections, and improve inspection efficiency.

[0016] This adjustable glass printing screen inspection rack benefits from the structure of a toothed disc and a mating toothed disc. The mating toothed disc rotates synchronously with the angle adjustment frame, remaining separate from the toothed disc. When the angle is adjusted to the target position, rotating the handle in the opposite direction causes the mating toothed disc to precisely engage with the teeth of the toothed disc under the thrust of the locking rod (tooth module 1.5, ensuring positioning accuracy ±1°). The contact between the tooth surfaces of the toothed disc and the mating toothed disc generates a frictional torque, preventing the angle adjustment frame from rotating and achieving angle fixation.

[0017] This adjustable glass printing screen inspection rack benefits from the structure of the placement rack, which forms a vertical clamping space with the fixed rack. As the placement rack rises, the screen is tightly clamped between the two (the clamping force is determined by the spring force, and different thickness screens can be adapted by changing the springs with different stiffness coefficients). The moving rack and the device base cooperate through a slide rail (not explicitly marked, but an implicit structure) to ensure no lateral displacement during the rising process. The surface of the placement rack is made of non-slip rubber material, which forms a "soft-hard" fit with the rigid clamping surface of the fixed rack, preventing both screen slippage and edge damage. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing frame of the present invention; Figure 4 This is a schematic diagram of the internal structure of the angle adjustment frame of the present invention; Figure 5 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 6 For the present invention Figure 3 Enlarged view of point B in the middle.

[0020] Explanation of reference numerals in the attached figures: In the diagram: 1. Fixed base; 101. Base; 102. Vertical support; 103. Sliding sleeve; 104. Slide rail; 105. Inspection light; 2. Fixed plate; 201. Gear plate; 202. Mating gear plate; 203. Angle adjustment frame; 204. Locking rod; 205. Rotating handle; 206. Connecting rod; 3. Fixed frame; 301. Adjustment box; 302. Motor; 303. Threaded rod; 304. Moving block; 305. Connecting block; 306. Telescopic air outlet pipe; 307. Air inlet pipe; 4. Fixed block; 401. Guide rod; 402. Sliding block; 5. Spring; 501. Moving frame; 502. Placement frame. Detailed Implementation

[0021] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0022] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0023] like Figures 1 to 6 An adjustable glass printing screen inspection rack is shown, including a base 101 for supporting the glass printing screen, four fixed seats 1 connected to the bottom of the base 101, a vertical support 102 welded to the top of the base 101, and a fixing frame 3 for fixing the glass printing screen on the side of the vertical support 102. An adjustment box 301 for limiting the direction of movement is installed on the top of the fixed frame 3. A motor 302 for providing power is installed on the side of the adjustment box 301. A threaded rod 303 is rotatably installed inside the adjustment box 301. The output shaft of the motor 302 is connected to the end of the threaded rod 303 through a coupling. A moving block 304 is rotatably connected to the outer circumference of the threaded rod 303. A connecting block 305 is welded to the side of the moving block 304. The motor 302 serves as the power output source, and its output shaft is rigidly connected to the threaded rod 303 through a coupling (coaxiality error ≤ 0.1mm). After the motor 302 starts, the torque is transmitted to the threaded rod 303 through the coupling, causing the threaded rod 303 to rotate along its own axis (the speed can be controlled by the motor speed control module to adapt to different cleaning needs). The threaded rod 303 and the moving block 304 are engaged by a threaded pair (using a trapezoidal thread with a lead of 5mm), and the rotational motion of the threaded rod 303 is converted into the linear motion of the moving block 304. The movable block 304 and the connecting block 305 are rigidly fixed by bolts. Therefore, the connecting block 305 moves synchronously along the threaded rod axially with the movable block 304. The bottom of the connecting block 305 is connected to a telescopic air duct 306 for cleaning glass printing screens.

[0024] The telescopic air outlet duct 306 is provided with multiple exhaust holes for gas ejection near the outer periphery of the vertical support 102, and the top of the connecting block 305 is connected to the air inlet duct 307 for connecting to the outside.

[0025] The vertical support 102 has two sliding sleeves 103 for height adjustment slidably connected to its outer periphery. Each sliding sleeve 103 has a fixed plate 2 welded to its outer periphery. Multiple geared discs 201 for fixing are provided on the side of the fixed plate 2. A locking rod 204 is rotatably connected inside the fixed plate 2. An angle adjustment bracket 203 is installed on the outer periphery of the locking rod 204. A mating geared disc 202 for cooperating with the geared discs 201 is welded to the side of the angle adjustment bracket 203. A rotating handle 205 is connected to the end of the locking rod 204. The geared discs 201 are fixed to the main body of the device. The mating geared discs 202 and the angle adjustment bracket 203 are connected by a key (circumferentially fixed, axially sliding). The rotating handle 205 is threadedly connected to the locking rod 204, and the end of the locking rod 204 is connected to the mating geared disc 202 by a bearing. When the handle 205 is rotated forward, the locking rod 204 drives the mating gear 202 to move axially, separating the mating gear 202 from the meshing gear 201 (unlocked state). When rotated in the reverse direction, the mating gear 202 resets and engages with the meshing gear 201 (locked state). In the unlocked state, the angle adjustment frame 203 can rotate freely around the rotation axis (adjustment range 0-90°), and the fixing frame 3 rotates synchronously with the angle adjustment frame 203 until the screen is at an angle suitable for inspection. During the adjustment process, the mating gear 202 rotates synchronously with the angle adjustment frame 203, remaining separated from the meshing gear 201. When the angle is adjusted to the target position, the handle 205 is rotated in the reverse direction, and the mating gear 202 precisely engages with the teeth of the meshing gear 201 under the thrust of the locking rod 204 (tooth module 1.5, ensuring positioning accuracy ±1°). The contact between the teeth of the meshing gear 201 and the mating gear generates a frictional torque, preventing the angle adjustment frame 203 from rotating, thus fixing the angle.

[0026] A connecting rod 206 is welded to the side of the angle adjustment frame 203. A locking rod 204 completely penetrates the interior of the angle adjustment frame 203. The connecting rod 206 is connected to the side of the fixed frame 3. Multiple springs 5 ​​are connected inside the fixed frame 3. One end of each spring 5 is connected to a movable frame 501. The movable frame 501 is slidably disposed inside the fixed frame 3. A placement frame 502 for fixing the glass printing screen is installed on the side of the movable frame 501. The springs 5 ​​serve as the elastic power source, with one end fixed to the device base and the other end rigidly connected to the movable frame 501. When the screen is placed on the placement frame 502, the weight of the screen causes the movable frame 501 to move downward against the elastic force of the springs 5. The springs 5 ​​generate a restoring force due to compression, which pushes the movable frame 501 upward, thereby causing the placement frame 502 to rise synchronously. The placement frame 502 and the fixed frame 3 form a vertical clamping space. As the placement frame 502 rises, the screen is tightly clamped between the two (the clamping force is determined by the spring force of the spring 5, and different thickness screens can be adapted by replacing the springs with different stiffness coefficients). The moving frame 501 and the device base cooperate through a slide rail (not explicitly marked, it is an implicit structure) to ensure that there is no lateral displacement during the rising process. The surface of the placement frame 502 is made of non-slip rubber material, which forms a "soft-hard" cooperation with the rigid clamping surface of the fixed frame 3, which not only prevents the screen from sliding but also prevents edge damage.

[0027] Both sides of the two placement racks 502 are connected to fixed blocks 4, and a guide rod 401 is connected between the two fixed blocks 4. A sliding block 402 is slidably arranged on the outer periphery of the guide rod 401. The side of the sliding block 402 is connected to the end of the telescopic air outlet 306. The connecting block 305 is connected to the telescopic air outlet 306 through a hinge structure (allowing ±5° swing to adapt to small deformation of the screen), which drives the telescopic air outlet 306 to perform horizontal scanning motion along the side of the screen. The air inlet pipe 307 is connected to the telescopic air outlet pipe 306 via a quick-connect coupling. Clean gas (such as compressed air or inert gas) is delivered through the air inlet pipe 307 to the telescopic air outlet pipe 306, and finally ejected at high speed from the surface jet holes (hole diameter 0.5-1mm, hole spacing 10mm) (outlet air pressure 0.3-0.5MPa). The airflow impact force removes dust and residual ink from the screen surface. The sliding block 402 at the bottom of the telescopic air outlet pipe 306 is clearance-fitted with the guide rod 401 (fit clearance 0.05-0.1mm). When the sliding block 402 moves with the telescopic air outlet pipe 306, it slides along the outer circumference of the guide rod 401, limiting the radial sway of the telescopic air outlet pipe 306 (sway ≤0.5mm). The telescopic air outlet pipe 306 adopts a multi-section sleeve structure, which can automatically extend and retract according to the width of the screen (extension range 500-1500mm). The sleeves are sealed with sealing rings to ensure no gas leakage.

[0028] The vertical support 102 is internally connected to a slide rail 104, and an inspection lamp 105 for inspecting glass printing screens is slidably mounted on the outer periphery of the slide rail 104. The inspection lamp 105 mainly provides controllable illumination to clearly reveal defects on the screen surface (such as mesh blockage, damage, pattern deformation, etc.). After the screen is fixed and cleaned, it can adjust the lighting position and method according to inspection needs, helping inspectors accurately identify whether there are problems on the screen that affect printing quality.

[0029] Working principle In use, the adjustable glass printing screen inspection rack is first placed between the placement frame 502 and the fixed frame 3. Spring 5 pushes the moving frame 501 and the placement frame 502 upwards, ultimately fixing the glass printing screen in place. Then, motor 302 is turned on, driving the threaded rod 303 to rotate. The threaded rod 303 moves the moving block 304 and the connecting block 305, which in turn moves the telescopic air duct 306 along the side of the glass printing screen. The air inlet pipe 307 sprays clean gas through the nozzles on the surface of the telescopic air duct 306, and the sprayed gas cleans the glass printing screen. The printing screen surface is cleaned. The bottom of the telescopic air duct 306 drives the sliding block 402 to move along the outer periphery of the guide rod 401, which serves as a guide. The length of the telescopic air duct 306 is telescopic. When it is necessary to adjust the angle of the fixing frame 3, rotate the rotating handle 205. The toothed disc 201 separates from the mating toothed disc 202. Adjust the angle of the angle adjusting frame 203. When the angle is adjusted to the set angle, rotate the rotating handle 205 in the opposite direction. The rotating handle 205 drives the locking rod 204 to rotate. The angle adjusting frame 203 drives the mating toothed disc 202 to contact the toothed disc 201. The toothed disc 201 fixes the mating toothed disc 202, thus completing the angle adjustment.

[0030] It should be noted that in this article, relational terms such as one and two are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable glass printing screen inspection frame comprising a base (101) for supporting a glass printing screen, characterised in that: The bottom of the base (101) is connected with four fixing bases (1), the top of the base (101) is welded with a vertical support (102), the side surface of the vertical support (102) is provided with a fixing frame (3) for fixing a glass printing screen; The top of the fixing frame (3) is provided with an adjusting box (301) for limiting the movement direction, the side surface of the adjusting box (301) is provided with a motor (302) for providing power, the inside of the adjusting box (301) is rotatably provided with a threaded rod (303), the output shaft of the motor (302) is connected with the end of the threaded rod (303) through a shaft coupling, the outer periphery of the threaded rod (303) is rotatably connected with a moving block (304), the side surface of the moving block (304) is welded with a connecting block (305), the bottom of the connecting block (305) is connected with a telescopic air outlet pipe (306) for cleaning the glass printing screen.

2. An adjustable glass printing screen checking frame according to claim 1, characterized in that: The outer periphery of the telescopic air outlet pipe (306) is provided with a plurality of exhaust holes for gas injection, the top of the connecting block (305) is connected with an air inlet pipe (307) for connecting with the outside.

3. An adjustable glass printing screen checking frame according to claim 1, characterized in that: The outer periphery of the vertical support (102) is slidably connected with two sliding sleeves (103) for adjusting the height, the outer periphery of each of the two sliding sleeves (103) is welded with a fixing disc (2).

4. An adjustable glass printing screen checking frame according to claim 3, wherein: The side surface of the fixing disc (2) is provided with a plurality of fixing toothed discs (201), the inside of the fixing disc (2) is rotatably connected with a locking rod (204), the outer periphery of the locking rod (204) is provided with an angle adjusting frame (203).

5. An adjustable glass printing screen checking frame according to claim 4, characterised in that: The side surface of the angle adjusting frame (203) is welded with a matching toothed disc (202) for cooperating with the fixing toothed disc (201), the end of the locking rod (204) is connected with a rotating handle (205).

6. An adjustable glass printing screen checking frame according to claim 5, wherein: The side surface of the angle adjusting frame (203) is welded with a connecting rod (206), the locking rod (204) completely penetrates the inside of the angle adjusting frame (203), and the connecting rod (206) is connected with the side surface of the fixing frame (3).

7. An adjustable glass printing screen checking frame according to claim 1, characterized in that: The inside of the fixing frame (3) is connected with a plurality of springs (5), one end of each of the plurality of springs (5) is connected with a moving frame (501), the moving frame (501) is slidably arranged in the inside of the fixing frame (3), and the side surface of the moving frame (501) is provided with a placing frame (502) for fixing the glass printing screen.

8. An adjustable glass printing screen checking frame according to claim 7, characterised in that: The side surface of each of the two placing frames (502) is connected with a fixing block (4), and the two fixing blocks (4) are connected with a guide rod (401).

9. An adjustable glass printing screen checking frame according to claim 8, characterised in that: The outer periphery of the guide rod (401) is slidably provided with a sliding block (402), and the side surface of the sliding block (402) is connected with the end of the telescopic air outlet pipe (306).

10. An adjustable glass printing screen checking frame according to claim 1, characterized in that: The inside of the vertical support (102) is connected with a sliding rail (104), and the outer periphery of the sliding rail (104) is slidably provided with an inspection lamp (105) for detecting the glass printing screen.

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