A squeegee device for a screen printer

Abstract

The utility model discloses a scraper device of silk screen printing machine, including mounting panel, scraper and ink return blade, the scraper and ink return blade are side by side and set below mounting panel, the both ends of ink return blade are equipped with first lift rod respectively, the both ends of scraper are equipped with second lift rod respectively, first lift rod and second lift rod all are linked to the sliding of mounting panel, the both sides of mounting panel are equipped with mounting seat, be equipped with interlocking assembly and drive assembly on mounting seat, interlocking assembly is used for connecting first lift rod and second lift rod, first lift rod and second lift rod form up and down sliding interlock through interlocking assembly, drive assembly drives first lift rod or second lift rod and carries out up and down sliding. The utility model provides a scraper device of silk screen printing machine, through setting up as interlocking structure with scraper and ink return blade on structure to drive both relative movement through a drive assembly, improve integral precision simultaneously, also avoid printing interference.

Description

Technical Field

[0001] This utility model relates to the field of screen printing equipment technology, and in particular to a squeegee device for a screen printing machine. Background Technology

[0002] The existing screen printing equipment works as follows: the screen is brought close to or pressed against the substrate, and then the squeegee is pressed down and moved along the screen. The ink or coating on the screen is squeezed onto the substrate by the squeegee. After the screen printing is completed, the squeegee is raised and the ink is scraped back by the ink return blade.

[0003] However, when printing on different substrates, using different screens, and with different patterns, the height of the squeegee needs to be adjusted to ensure optimal contact between the squeegee and the screen. Additionally, the squeegee needs to be raised when applying ink, or when it returns ink. Currently, cylinder assemblies are commonly used to move the squeegee and squeegee up and down separately. However, malfunctions can occur during use, causing the squeegee and squeegee to rise or fall simultaneously, resulting in printing interference. Furthermore, multiple cylinders are required for control, which can easily lead to precision errors. Utility Model Content

[0004] The purpose of this invention is to provide a squeegee device for a screen printing machine. By setting the squeegee and the ink return blade in an interlocking structure, the two can be driven to move relative to each other by a single drive component, thereby improving overall accuracy and avoiding printing interference.

[0005] The technical solution adopted by the squeegee device of the screen printing machine disclosed in this utility model is: A squeegee device for a screen printing machine includes a mounting plate, a squeegee, and a return ink blade. The squeegee and the return ink blade are arranged side by side below the mounting plate. The return ink blade has a first lifting rod at each end, and the squeegee has a second lifting rod at each end. Both the first and second lifting rods are slidably connected to the mounting plate. Mounting seats are provided on both sides of the mounting plate. An interlocking assembly and a driving assembly are provided on the mounting seats. The interlocking assembly is used to connect the first and second lifting rods. The first and second lifting rods form an up-and-down sliding interlock through the interlocking assembly. The driving assembly drives the first or second lifting rod to slide up and down.

[0006] As a preferred embodiment, the interlocking assembly includes a first tooth block, a second tooth block, and a gear. The first tooth block and the second tooth block are slidably disposed on opposite sides of the mounting base. The first tooth block and the second tooth block are fixedly connected to the first lifting rod and the second lifting rod, respectively. The gear is rotatably disposed on the middle surface of the mounting base and meshes with the first tooth block and the second tooth block.

[0007] As a preferred embodiment, the first and second tooth blocks are provided with teeth on both sides near the mounting base, and there are two gears, which are coaxially arranged on both sides of the mounting base.

[0008] As a preferred embodiment, the interlocking assembly includes a first slider, a second slider, and a rotating rod. The first slider and the second slider are fixedly connected to the first lifting rod and the second lifting rod, respectively. The first slider and the second slider are slidably disposed on both sides of the mounting base. The middle part of the rotating rod is rotatably connected to the middle part of the mounting base. The two ends of the rotating rod are respectively opened in the waist-shaped groove. The first slider and the second slider are both slidably connected to the waist-shaped groove through a connecting shaft, and the connecting shaft can rotate within the waist-shaped groove.

[0009] As a preferred embodiment, the drive assembly includes a servo motor, a lead screw, and a threaded sleeve. The servo motor is disposed on one side of the mounting base, the lead screw is rotatably disposed in the middle of the mounting base, and the threaded sleeve is threadedly connected to the surface of the lead screw. The lower end of the lead screw and the output shaft of the servo motor both extend to the bottom of the mounting plate. A first transmission wheel and a second transmission wheel are respectively fixed to the lower end of the lead screw and the output shaft of the servo motor. The first transmission wheel and the second transmission wheel are connected by a transmission belt. A connecting plate is fixed to the threaded sleeve, and the mounting base has a groove corresponding to the connecting plate. The connecting plate extends out of the groove and is fixedly connected to the first lifting rod or the second lifting rod.

[0010] As a preferred embodiment, the mounting plate is provided with a sliding sleeve corresponding to the first lifting rod and the second lifting rod, and both the first lifting rod and the second lifting rod pass through the sliding sleeve and are slidably connected to the mounting plate.

[0011] The beneficial effects of the squeegee device for a screen printing machine disclosed in this utility model are as follows: In use, the ink return blade and the squeegee are mounted on the screen above the mounting plate via a mounting plate. Interlocking components and driving components are provided at both ends of the mounting plate. The ink return blade and the squeegee are slidably connected to the mounting plate at both ends via a first lifting rod and a second lifting rod, respectively. Thus, when the driving component moves the first or second lifting rod at one end of the mounting plate up and down, the interlocking component moves the first or second lifting rod on the other side in the opposite direction. For example, when the first lifting rod rises, the second lifting rod falls; when the first lifting rod falls, the second lifting rod rises. This creates a sliding interlock between the ink return blade and the squeegee, preventing simultaneous rising or falling, improving overall accuracy, and avoiding printing interference. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the squeegee device of a screen printing machine according to the present invention.

[0013] Figure 2This is an exploded view of the interlocking assembly and drive assembly of Embodiment 1 of the doctor blade device of a screen printing machine according to this utility model.

[0014] Figure 3 This is a schematic diagram of the interlocking component and drive component structure of Embodiment 2 of the doctor blade device of a screen printing machine according to this utility model. Detailed Implementation

[0015] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings: Example 1 Please refer to Figure 1 and Figure 2 A squeegee 20 device for a screen printing machine includes a mounting plate 10, a squeegee 20, and a return ink blade 30. The squeegee 20 and the return ink blade 30 are arranged side by side below the mounting plate 10. The return ink blade 30 has a first lifting rod 31 at each end, and the squeegee 20 has a second lifting rod 21 at each end. Both the first lifting rod 31 and the second lifting rod 21 are slidably connected to the mounting plate 10. Mounting seats 11 are provided on both sides of the mounting plate 10. Sliding sleeves 12 are provided for the first lifting rod 31 and the second lifting rod 21. Both the first lifting rod 31 and the second lifting rod 21 pass through the sliding sleeves 12 and are slidably connected to the mounting plate 10. Both ends of the mounting plate 10 are provided with interlocking components 40 and driving components 50. The interlocking components 40 include a first tooth block 41, a second tooth block 42 and a gear 43. The first tooth block 41 and the second tooth block 42 are respectively slidably disposed on both sides of the mounting base 11. The first tooth block 41 and the second tooth block 42 are respectively fixedly connected to the first lifting rod 31 and the second lifting rod 21. The gear 43 is rotatably disposed on the middle surface of the mounting base 11 and meshes with the first tooth block 41 and the second tooth block 42.

[0016] When the drive assembly 50 drives the first lifting rod 31 at one end of the mounting plate 10 to rise, it pushes the first tooth block 41 to rise as well. As a result, the first tooth block 41 drives the gear 43 to rotate. Meanwhile, the second tooth block 42, located on the other side of the gear 43, descends under the action of the gear 43 meshing, thereby driving the second lifting rod 21 to descend. Conversely, when the first lifting rod 31 descends, the first tooth block 41 drives the gear 43 to rotate, and the gear 43 drives the second tooth block 42 to rise, thus raising the second lifting rod 21. This forms an interlock between the first lifting rod 31 and the second lifting rod 21 as they move up and down.

[0017] Furthermore, the first tooth block 41 and the second tooth block 42 are provided with teeth on both sides near the mounting base 11, and there are two gears 43. The two gears 43 are coaxially arranged on both sides of the mounting base 11. Then, through the teeth on both sides of the first tooth block 41 and the second tooth block 42, the two gears 43 can be driven to rotate synchronously, thereby achieving a stable interlocking of the first tooth block 41 and the second tooth block 42 moving in opposite directions.

[0018] Example 2 Please refer to Figure 3 In embodiment 2, the interlocking assembly 40 includes a first slider 44, a second slider 45, and a rotating rod 46. The first slider 44 and the second slider 45 are fixedly connected to the first lifting rod 31 and the second lifting rod 21, respectively. The first slider 44 and the second slider 45 are slidably disposed on both sides of the mounting base 11, and the middle part of the rotating rod 46 is rotatably connected to the middle part of the mounting base 11. The two ends of the rotating rod 46 are respectively opened in the waist-shaped groove 461. The first slider 44 and the second slider 45 are slidably connected to the waist-shaped groove 461 through a connecting shaft, and the connecting shaft can rotate within the waist-shaped groove 461.

[0019] When the drive assembly 50 drives the first lifting rod 31 at one end of the mounting plate 10 to rise, the first lifting rod 31 pushes one end of the rotating rod 46 to rotate upward as well, while the connecting shaft slides in the waist-shaped groove 461 to ensure that the rotating rod 46 can rotate smoothly. The other end of the rotating rod 46 rotates downward, thereby driving the second lifting rod 21 to slide downward, forming an interlock between the first lifting rod 31 and the second lifting rod 21.

[0020] In embodiments 1 and 2 above, the drive assembly 50 includes a servo motor 51, a lead screw 52, ​​and a threaded sleeve 53. The servo motor 51 is disposed on one side of the mounting base 11, the lead screw 52 is rotatably disposed in the middle of the mounting base 11, and the threaded sleeve 53 is threadedly connected to the surface of the lead screw 52. The lower end of the lead screw 52 and the output shaft of the servo motor 51 both extend to the bottom of the mounting plate 10. The lower end of the lead screw 52 and the output shaft of the servo motor 51 are respectively fixed with a first transmission wheel 54 and a second transmission wheel 55. The first transmission wheel 54 and the second transmission wheel 55 are connected by a transmission belt 56. The threaded sleeve 53 is fixed with a connecting plate 57. The mounting base 11 has a groove 111 corresponding to the connecting plate 57. The connecting plate 57 extends out of the groove 111 and is fixedly connected to the first lifting rod 31 or the second lifting rod 21.

[0021] The servo motor 51 drives the second transmission wheel 55 to rotate, and the transmission belt 56 synchronously drives the first transmission wheel 54 to rotate, so the lead screw 52 also rotates. The threaded sleeve 53 is restricted by the connecting plate 57 and the slide groove 111 and cannot rotate, so it moves up and down along the lead screw 52. In this embodiment, the connecting plate 57 is fixedly connected to the lifting rod of the ink return knife 30, so the connecting plate 57 drives the ink return knife 30 to move up and down, while the scraper 20 moves in the opposite direction through the gear 43.

[0022] In this embodiment, drive components 50 are provided at both ends of the doctor blade 20 and the ink return blade 30 to achieve synchronous lifting and lowering, preventing one end of the doctor blade 20 and the ink return blade 30 from tilting. Simultaneously, the servo motor 51 enables more precise height control and avoids errors caused by the inherent movement margin of the cylinder when the doctor blade 20 and the ink return blade 30 are pressed down. In this embodiment, when the servo motor 51 is not working, it can be directly locked by the first tooth block 41 and the second tooth block 42 meshing with the gear 43 to avoid repeated errors, thus improving printing accuracy. The servo motor 51 used in this embodiment is a Panasonic MSMF012L1C2.

[0023] This utility model provides a squeegee device for a screen printing machine. In use, the ink return blade and the squeegee are mounted on the screen above the screen via a mounting plate. Interlocking components and driving components are provided at both ends of the mounting plate. The ink return blade and the squeegee are slidably connected to the mounting plate at both ends via a first lifting rod and a second lifting rod, respectively. When the driving component moves the first or second lifting rod at one end of the mounting plate up and down, the interlocking component moves the first or second lifting rod on the other side in the opposite direction. For example, when the first lifting rod rises, the second lifting rod falls; when the first lifting rod falls, the second lifting rod rises. This creates a sliding interlock between the ink return blade and the squeegee, preventing simultaneous rising or falling, improving overall accuracy, and avoiding printing interference.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A squeegee device for a screen printing machine, characterized in that, The device includes a mounting plate, a doctor blade, and a return ink blade. The doctor blade and the return ink blade are arranged side by side below the mounting plate. Each end of the return ink blade has a first lifting rod, and each end of the doctor blade has a second lifting rod. Both the first and second lifting rods are slidably connected to the mounting plate. Mounting seats are provided on both sides of the mounting plate. An interlocking assembly and a driving assembly are provided on the mounting seats. The interlocking assembly is used to connect the first and second lifting rods. The first and second lifting rods form an up-and-down sliding interlock through the interlocking assembly. The driving assembly drives the first or second lifting rod to slide up and down.

2. The squeegee device of a screen printing machine as described in claim 1, characterized in that, The interlocking assembly includes a first tooth block, a second tooth block, and a gear. The first tooth block and the second tooth block are slidably disposed on opposite sides of the mounting base. The first tooth block and the second tooth block are fixedly connected to the first lifting rod and the second lifting rod, respectively. The gear is rotatably disposed on the middle surface of the mounting base and meshes with the first tooth block and the second tooth block.

3. The squeegee device of a screen printing machine as described in claim 2, characterized in that, The first and second tooth blocks have teeth on both sides near the mounting base. There are two gears, which are coaxially arranged on both sides of the mounting base.

4. The squeegee device of a screen printing machine as described in claim 1, characterized in that, The interlocking assembly includes a first slider, a second slider, and a rotating rod. The first slider and the second slider are fixedly connected to the first lifting rod and the second lifting rod, respectively. The first slider and the second slider are slidably disposed on both sides of the mounting base. The middle part of the rotating rod is rotatably connected to the middle part of the mounting base. The two ends of the rotating rod are respectively opened in the waist-shaped groove. The first slider and the second slider are slidably connected to the waist-shaped groove through a connecting shaft, and the connecting shaft can rotate within the waist-shaped groove.

5. The squeegee device of a screen printing machine as described in claim 1, characterized in that, The drive assembly includes a servo motor, a lead screw, and a threaded sleeve. The servo motor is located on one side of the mounting base, the lead screw is rotatably located in the middle of the mounting base, and the threaded sleeve is threadedly connected to the surface of the lead screw. The lower end of the lead screw and the output shaft of the servo motor both extend to the bottom of the mounting plate. A first transmission wheel and a second transmission wheel are respectively fixed to the lower end of the lead screw and the output shaft of the servo motor. The first transmission wheel and the second transmission wheel are connected by a transmission belt. A connecting plate is fixed to the threaded sleeve, and the mounting base has a groove corresponding to the connecting plate. The connecting plate extends out of the groove and is fixedly connected to the first lifting rod or the second lifting rod.

6. The squeegee device of a screen printing machine as described in claim 1, characterized in that, The mounting plate is provided with a sliding sleeve corresponding to the first lifting rod and the second lifting rod, and both the first lifting rod and the second lifting rod pass through the sliding sleeve and are slidably connected to the mounting plate.

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