Auxiliary glass screen printing scraper device

Abstract

The utility model discloses an auxiliary glass screen printing scraper device, and particularly relates to the technical field of printing scrapers, which comprises a moving seat, a fixing frame is arranged at the bottom of the moving seat, a support frame is arranged on one side of the fixing frame, an ink reclaiming blade is detachably mounted on the outer wall of the support frame through screws, and a mounting frame is slidably arranged in the fixing frame. A doctor blade is detachably mounted in the mounting frame, two sets of air cylinders are arranged at the top of the moving seat, an adjusting structure is arranged at the joint of the mounting frame and the fixing frame and comprises a screw rod, mounting grooves are formed in the two inner walls of the fixing frame, and the screw rod is rotationally mounted in one mounting groove. According to the scraping knife device, once the scraping knife is abraded due to long-term friction, an operator can conveniently and accurately calculate and adjust the extending length of the scraping knife, the scraping knife device is used for compensating the abraded part of the scraping knife, the scraping knife does not need to be frequently replaced, and the adjusting precision and the adjusting efficiency are high.

Description

Technical Field

[0001] This utility model relates to the field of printing squeegee technology, and more specifically, to an auxiliary glass screen printing squeegee device. Background Technology

[0002] Glass screen printing machines are common printing machines used for printing text and images. They generally consist of inking, printing, and conveying mechanisms. The working principle is as follows: First, the text and images to be printed are made into a printing plate. The printing plate is then mounted on the screen printing machine. Then, ink is applied manually or by the screen printing machine to the areas with text and images on the printing plate. The ink is then directly or indirectly transferred to the substrate, such as ribbon, metal plate, plastic, leather, wood, glass, and ceramics, thereby reproducing a printed product identical to the printing plate.

[0003] A search revealed that Chinese patent CN219028865U discloses a screen printing squeegee device. The squeegee holder of this device can rotate, making it easy to adjust the angle of the squeegee. The height of the mounting bracket can be adjusted by the engagement of a threaded rod and a threaded through hole, thereby adjusting the length of the squeegee extension. This eliminates the need for frequent squeegee replacements. The squeegee is installed by engaging a limiting cylinder with an opening slot, making installation simple and quick.

[0004] However, in actual use, the extension adjustment of the worn squeegee is achieved by adjusting the height of the mounting bracket through the engagement of the threaded rod and the threaded through hole. However, in terms of adjustment accuracy, due to the lack of a precise indicator device, the operator cannot accurately grasp the change in the squeegee extension length each time the threaded rod is rotated. In actual printing, such as high-precision electronic product circuit boards or fine pattern printing tasks, the degree of contact between the squeegee and the screen is extremely important. Even a slight error in the squeegee extension length can lead to uneven ink thickness, ultimately damaging the clarity, integrity, and product quality of the printed pattern. In terms of operational convenience, the operator relies solely on experience and visual judgment to judge and adjust the squeegee wear, which is inefficient and prone to over- or under-adjustment due to human error. Therefore, this application provides an auxiliary glass screen printing squeegee device. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an auxiliary glass screen printing squeegee device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary glass screen printing squeegee device, comprising a movable base, a fixed frame at the bottom of the movable base, a support frame on one side of the fixed frame, an ink return blade detachably mounted on the outer wall of the support frame by screws, a mounting frame slidably mounted inside the fixed frame, an ink squeegee detachably mounted inside the mounting frame, and two sets of cylinders at the top of the movable base, each set containing two cylinders, with the output ends of the two sets of cylinders respectively fixedly connected to the fixed frame and the support frame.

[0007] As can be seen from the above structure, the two sets of cylinders drive the fixed frame and the support frame to perform sequential lifting operations, which enables the doctor blade and the return blade to perform the doctoring and return operations respectively, thus completing the glass screen printing process.

[0008] To precisely adjust the downward extension of the worn doctor blade and avoid frequent adjustments, preferably, an adjustment structure is provided at the connection between the mounting bracket and the fixed bracket. The adjustment structure includes a screw, and mounting grooves are provided on both inner walls of the fixed bracket. The screw is rotatably mounted inside one of the mounting grooves, and a sliding rod is provided inside the other mounting groove. A pin is fixedly mounted at the top of the screw, and a rotating block is fixedly mounted at the top of the pin. An adjustment block and a slider are respectively provided on the outside of the screw and the sliding rod. The adjustment block is outside the screw and threadedly connected to it, while the slider is slidably connected to the sliding rod. The adjustment block and the slider are respectively fixedly mounted on both sides of the outer wall of the mounting bracket. An angle disk is fixedly mounted on the surface of the fixed bracket. A fixing ring is fixedly mounted outside the pin, and an indicator needle is provided at one end of the fixing ring. The top of the pin extends to the top of the fixed bracket and is rotatably connected to the angle disk. The indicator needle is attached to the surface of the angle disk.

[0009] To facilitate the installation and removal of the doctor blade, preferably, as shown in the attached figure, the mounting bracket has a slot inside, the doctor blade is slidably installed inside the slot, and the outer wall of the mounting bracket is threaded with several bolts.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] By setting an adjustment structure, the rotating block drives the screw to rotate through the shaft pin, which in turn causes the mounting frame to slide and be guided inside the fixed frame through the slider and the adjustment block. The mounting frame drives the doctor blade to extend downward to compensate for the worn part at the bottom of the doctor blade, and to prevent the doctor blade from not being able to make close contact with the screen after wear, thus affecting the printing quality.

[0012] As the pivot pin drives the screw to rotate, it also drives the retaining ring to rotate, causing the indicator needle to rotate against the angle dial. Based on the screw pitch, the number of graduations on the angle dial, and the degree corresponding to each graduation, the extension length of the doctor blade can be accurately calculated. This allows for precise control of the extension length of the worn doctor blade, avoiding the burden of frequent adjustments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the doctor blade of this utility model during disassembly.

[0015] Figure 3 This is a schematic diagram of the connection structure between the mounting bracket and the fixing bracket of this utility model.

[0016] Figure 4 This is a schematic diagram of the connection structure between the adjusting block and the slider and the mounting frame of this utility model.

[0017] Figure 5 This is a schematic diagram of the connection structure between the shaft pin and the angle plate of this utility model.

[0018] Figure 6 This is a schematic diagram of the internal structure of the fixing frame of this utility model.

[0019] The attached diagram is labeled as follows: 1. Movable base; 2. Fixed frame; 3. Support frame; 4. Ink return knife; 5. Mounting frame; 6. Doctor blade; 7. Cylinder; 8. Screw; 9. Mounting groove; 10. Slide rod; 11. Shaft pin; 12. Rotating block; 13. Adjusting block; 14. Sliding block; 15. Angle plate; 16. Fixing ring; 17. Indicator needle; 18. Slot; 19. Bolt. Detailed Implementation

[0020] 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.

[0021] As attached Figure 1-6The auxiliary glass screen printing squeegee device shown includes a movable base 1, a fixed frame 2 at the bottom of the movable base 1, a support frame 3 on one side of the fixed frame 2, an ink return blade 4 detachably mounted on the outer wall of the support frame 3 by screws, a mounting frame 5 slidably mounted inside the fixed frame 2, an ink squeegee 6 detachably mounted inside the mounting frame 5, and two sets of cylinders 7 at the top of the movable base 1, each set of cylinders 7 consisting of two cylinders, and the output ends of the two sets of cylinders 7 are fixedly connected to the fixed frame 2 and the support frame 3 respectively.

[0022] Specifically, in this structure, the movable seat 1 can be installed on the drive rail of the glass screen printing machine. The drive rail on the glass screen printing machine drives the movable seat 1 to reciprocate laterally, so that the doctor blade 6 and the return blade 4 scrape the glass screen respectively. The reciprocating lateral movement of the movable seat 1 by the drive rail on the glass screen printing machine is the prior art and will not be described in detail in this application.

[0023] Two sets of cylinders 7 drive the fixed frame 2 and the support frame 3 to perform sequential lifting and lowering operations, so that the fixed frame 2 drives the doctor blade 6 and the support frame 3 drives the ink return blade 4 to perform ink scraping and ink return operations respectively, thus completing the glass screen printing process.

[0024] In a specific embodiment, as shown in the appendix Figure 4 , 5 As shown in Figure 6, an adjustment structure is provided at the connection between the mounting bracket 5 and the fixed bracket 2. The adjustment structure includes a screw 8. The two inner walls of the fixed bracket 2 are provided with mounting grooves 9. The screw 8 is rotatably installed inside one of the mounting grooves 9, and a slide rod 10 is provided inside the other mounting groove 9. A shaft pin 11 is fixedly installed at the top of the screw 8, and a rotating block 12 is fixedly installed at the top of the shaft pin 11. An adjustment block 13 and a slider 14 are respectively provided on the outside of the screw 8 and the slide rod 10. The adjustment block 13 is outside the screw 8 and is threadedly connected to the screw 8. The slider 14 is slidably connected to the slide rod 10. The adjustment block 13 and the slider 14 are respectively fixedly installed on both sides of the outer wall of the mounting bracket 5. An angle disk 15 is fixedly installed on the surface of the fixed bracket 2. A fixing ring 16 is fixedly installed on the outside of the shaft pin 11, and an indicator needle 17 is provided at one end of the fixing ring 16. The top of the shaft pin 11 extends to the top of the fixed bracket 2, and the shaft pin 11 is rotatably connected to the angle disk 15. The indicator needle 17 is attached to the surface of the angle disk 15.

[0025] Specifically, in this structure, as an improvement of this application, in the prior art, since the doctor blade 6 is made of rubber, it will wear down during the printing process. After the doctor blade 6 wears down, it cannot make close contact with the screen, which affects the printing quality.

[0026] Furthermore, once the doctor blade 6 is worn, it is necessary to precisely control the extension length of the doctor blade 6. The operator drives the shaft pin 11 to rotate by rotating the block 12, so that the shaft pin 11 drives the screw 8 to rotate inside the corresponding mounting groove 9. The rotation of the screw 8 drives the adjusting block 13 to adjust up and down, so that the mounting frame 5 slides and is guided inside the fixed frame 2 through the slider 14 and the sliding rod 10. The mounting frame 5 drives the doctor blade 6 to extend downward to compensate for the worn part at the bottom of the doctor blade 6.

[0027] When adjusting the downward extension distance of the doctor blade 6, as the screw 8 rotates via the shaft pin 11, the shaft pin 11 also rotates the fixing ring 16, causing the indicator needle 17 to rotate against the angle disk 15. The circumference of the angle disk 15 is divided into 360 equal divisions, each division representing 1°. According to the formula: the extension length L of the doctor blade 6 = the number of divisions m on the angle disk 15 multiplied by the angle corresponding to each division. , =1° divided by 360° and then multiplied by the pitch P on the screw 8. Since each graduation on the angle dial 15 is 1°, as long as the pitch P of the screw 8 is known, the extension length L of the doctor blade 6 can be calculated based on the number of graduations m that the indicator needle 17 has rotated on the angle dial 15.

[0028] For example, the pitch of the screw 8 is p=2mm. When the operator rotates the shaft pin 11, the indicator needle 17 rotates through m=90 graduations on the angle dial 15, which is 90°. According to the formula L=90×1° / 360°×2mm=0.5mm, the doctor blade 6 extends by 0.5mm.

[0029] Furthermore, the change in the extension length of the doctor blade 6 can be calculated using the angle scale value, thereby enabling more precise control over the adjustment of the extension length of the doctor blade 6 with wear at the bottom. This is especially true when a small adjustment to the position of the doctor blade 6 is required, as it can accurately measure the length change corresponding to a very small angle change.

[0030] In a specific embodiment, as shown in the appendix Figure 2 , 3 As shown in Figure 4, the mounting bracket 5 has a slot 18 inside, the doctor blade 6 is slidably installed inside the slot 18, and several bolts 19 are threaded on the outer wall of the mounting bracket 5.

[0031] Specifically, in this structure, the top of the doctor blade 6 can slide into the slot 18 of the mounting bracket 5 through the slot 18, and the doctor blade 6 is fixed and tightened by the bolt 19 after installation, which can achieve the installation of the doctor blade 6 and at the same time facilitate the disassembly of the doctor blade 6.

[0032] Working principle of this utility model:

[0033] This application provides an auxiliary glass screen printing squeegee device. First, the movable seat 1 can be installed on the drive rail of the glass screen printing machine. The drive rail on the glass screen printing machine drives the movable seat 1 to move back and forth laterally, so that the squeegee 6 and the return ink knife 4 scrape the glass screen respectively. Meanwhile, two sets of cylinders 7 drive the fixed frame 2 and the support frame 3 to perform sequential lifting operations, so that the fixed frame 2 drives the squeegee 6 and the support frame 3 drives the return ink knife 4 to perform squeegee and return ink operations respectively, thus completing the glass screen printing process.

[0034] When the bottom of the doctor blade 6 wears down due to prolonged contact, the rotating block 12 drives the shaft pin 11 to rotate, causing the shaft pin 11 to drive the screw 8 to rotate inside the corresponding mounting slot 9. The rotation of the screw 8 drives the adjusting block 13 to adjust up and down, so that the mounting bracket 5 slides and is guided inside the fixed bracket 2 through the slider 14 and the sliding rod 10. The mounting bracket 5 drives the doctor blade 6 to extend downward to compensate for the worn part at the bottom of the doctor blade 6. During the process of the shaft pin 11 driving the screw 8 to rotate, the shaft pin 11 also drives the fixed ring 16 to rotate, so that the indicator needle 17 is in contact with the angle disk 15 and rotates. Since the circumference of the angle disk 15 is divided into 360 equal scales, each scale represents 1°, as long as the pitch P of the screw 8 is known, the extension length L of the doctor blade 6 can be calculated based on the number of scales m that the indicator needle 17 has rotated on the angle disk 15. Using this method, once the bottom of the doctor blade 6 wears down, the accuracy of the downward extension adjustment of the doctor blade 6 can be adjusted more precisely, reducing the burden of frequent adjustments.

[0035] By loosening the bolts 19 on the outside of the mounting bracket 5, the doctor blade 6 can be slid out from the slot 18 opened in the mounting bracket 5, making it easy to replace the doctor blade 6. Similarly, by removing the screws at the support bracket 3, the return blade 4 can be disassembled and replaced.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary glass screen printing squeegee device, comprising a movable base (1), characterized in that: The bottom of the movable base (1) is provided with a fixed frame (2), and a support frame (3) is provided on one side of the fixed frame (2). The outer wall of the support frame (3) is detachably mounted with an ink scraper (4) by screws. The inside of the fixed frame (2) is slidably provided with an installation frame (5). The inside of the installation frame (5) is detachably mounted with an ink scraper (6). The top of the movable base (1) is provided with two sets of cylinders (7). An adjustment structure is provided at the connection between the installation frame (5) and the fixed frame (2). The adjustment structure includes a screw (8), and the two inner walls of the fixing frame (2) are provided with mounting grooves (9). The screw (8) is rotatably installed inside one of the mounting grooves (9), and a slide rod (10) is provided inside the other mounting groove (9). A shaft pin (11) is fixedly provided at the top of the screw (8), and a rotating block (12) is fixedly provided at the top of the shaft pin (11). An adjustment block (13) and a slider (14) are respectively provided on the outside of the screw (8) and the slide rod (10). An angle plate (15) is fixedly provided on the surface of the fixing frame (2), and a fixing ring (16) is fixedly provided on the outside of the shaft pin (11), and an indicator needle (17) is provided at one end of the fixing ring (16).

2. The auxiliary glass screen printing squeegee device according to claim 1, characterized in that: Each set of cylinders (7) is set to two, and the output ends of the two sets of cylinders (7) are fixedly connected to the fixed frame (2) and the support frame (3) respectively.

3. The auxiliary glass screen printing squeegee device according to claim 1, characterized in that: The mounting bracket (5) has a slot (18) inside, the doctor blade (6) is slidably installed inside the slot (18), and the outer wall of the mounting bracket (5) is threaded with several bolts (19).

4. The auxiliary glass screen printing squeegee device according to claim 1, characterized in that: The adjusting block (13) is outside the screw (8) and is threadedly connected to the screw (8). The slider (14) is slidably connected to the slide rod (10). The adjusting block (13) and the slider (14) are respectively fixedly installed on both sides of the outer wall of the mounting bracket (5).

5. The auxiliary glass screen printing squeegee device according to claim 1, characterized in that: The top of the pin (11) extends to the top of the bracket (2), and the pin (11) is rotatably connected to the angle disk (15), and the indicator needle (17) is attached to the surface of the angle disk (15).

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