Electric screen printing scraping arm mechanism

Abstract

The utility model discloses an electric screen printing scraping arm mechanism, which relates to the technical field of screen printing machines and comprises a printing head module and an electric module, the printing head module comprises a printing head support plate and a plurality of groups of double-stroke cylinders arranged on two sides of the top surface of the printing head support plate, and the printing head module is arranged on the lower surface of the front end of a bridge plate on the electric module through the printing head support plate. Two of the multiple sets of double-stroke air cylinders are jointly connected with an ink scraping blade assembly through air cylinder shafts, and the other two sets of double-stroke air cylinders are jointly connected with an ink returning blade assembly through air cylinder shafts. The printing head module is arranged on the lower surface of the front end of the bridge plate on the electric module, when the printing head module is located at the foremost end, the whole printing head module is located outside the module frame range of the electric module, the problem that the electric module occupies the space is avoided through the layout, the module body occupies the working space as little as possible, and the working efficiency is improved. Operators can conveniently take and place the printed materials, the occupied space is reduced, and adjustment and use of the device are not affected.

Description

Technical Field

[0001] This utility model relates to the field of screen printing machine technology, specifically to an electric screen printing scraper mechanism. Background Technology

[0002] Currently, medium and large-sized flatbed screen printing machines require the use of electric screen printing scraper mechanisms during operation. These electric screen printing scraper mechanisms resemble a horizontal scraping motion, hence the name "horizontal electric screen printing scraper mechanism." However, existing electric screen printing scraper mechanisms have the following shortcomings;

[0003] 1. Existing electric module-type scraper arms occupy space above the worktable, obstructing the operator's view and making it inconvenient to handle the substrate placed on the worktable. This manifests as follows: when the print head assembly is at the front, its position is still within the movement module range of the scraper arm. In order to achieve sufficient stroke, the scraper arm will extend forward, occupying too much space above the worktable, obstructing the view, and making it inconvenient for the operator to load and unload materials.

[0004] 2. Existing inclined arm screen printing machines suffer from problems such as large scraper arm size, safety concerns, high cost, and inconvenient operation;

[0005] 3. When setting up a screen printing machine, it is often necessary to adjust the squeegee stroke. However, the existing electric module type of squeegee stroke adjustment is inconvenient and easily causes damage. If the motor is controlled by the control system to adjust the stroke, it may damage the screen printing plate or squeegee without notice, which is unsafe and unreasonable.

[0006] 4. The scraper arm needs to be suspended at one end. The longer the scraper arm, the greater the torque requirement of the single-end mounting point, and the higher the installation requirements.

[0007] Based on the above-mentioned shortcomings, those skilled in the art propose an electric screen printing scraper mechanism suitable for use on medium and large-sized flatbed rocker arm screen printing machines. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an electric screen printing scraper mechanism suitable for use on medium and large-sized flatbed rocker arm screen printing machines.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An electric screen printing squeegee mechanism includes a print head module and an electric module. The print head module includes a print head support plate and multiple sets of double-stroke cylinders disposed on both sides of the top surface of the print head support plate. The print head module is mounted on the lower front surface of the bridge plate on the electric module via the print head support plate. Two sets of double-stroke cylinders are connected to a squeegee assembly via cylinder shafts, and the other two sets of double-stroke cylinders are connected to a return ink blade assembly via cylinder shafts.

[0011] Furthermore, the electric module includes a module frame, inside which a module moving component and a stroke adjusting component for adjusting the stroke range of the moving component are disposed, and a drive motor is disposed on the outer side of the module frame, the drive motor being drivenly connected to the module moving component.

[0012] Furthermore, the module frame is formed by two short-side fixing plates and two long-side fixing plates. The main surfaces of the two short-side fixing plates are provided with screw connection holes, the main surfaces of the two long-side fixing plates are provided with a plurality of threaded holes, and a support plate is connected between the inner surfaces of the two long-side fixing plates.

[0013] Furthermore, the module moving assembly includes an active synchronous pulley, a driven synchronous pulley, and a synchronous belt connected to the active and driven synchronous pulleys. The drive motor is driven and connected to the active synchronous pulley via an output shaft. Bearings are provided at both the beginning and end of the output shaft and the driven shaft. The bearings are embedded in the inner side of the long side fixed plate. The synchronous belt is provided with a synchronous belt clamp. A bridge plate is provided at the lower part of the synchronous belt clamp. Two sets of slider connecting plates are provided at the upper part of the bridge plate. A slider that is slidably connected to a linear slide rail is provided on the outer side of each set of slider connecting plates. The linear slide rail is located on the inner side of the long side fixed plate. A sensing plate is provided on the upper part of one of the two sets of slider connecting plates.

[0014] Furthermore, the upper surface of the rear end of the bridge plate is connected to the timing belt clamp, the lower surface of the front end of the bridge plate is connected to the middle of the top surface of the printing head support plate, and an air passage manifold is provided on the lower surface of the bridge plate.

[0015] Furthermore, the stroke adjustment assembly includes two sets of lead screws and two sets of stroke sliders mounted on the two sets of lead screws. The two sets of lead screws pass through the support plate, and their beginning and end ends are connected to the lead screw connection holes of the short side fixing plate. One of the two sets of lead screws has a limiting ring sleeved on its beginning and end sections. The two sets of stroke sliders have flat grooves that pass through them on their sides. The two inner sides of the flat grooves have semi-circular cavities. The two semi-circular cavities together form an assembly opening through which the lead screws can pass. The upper part of the two sets of stroke sliders is provided with a sleeve and a handle bolt that passes through the sleeve and locks with the stroke slider. A connecting block is provided on one side of the two sets of stroke sliders. A sensor that cooperates with the sensing plate is provided on the connecting block.

[0016] Furthermore, the doctor blade assembly includes a double-ended connecting rod, which includes an integrally formed connector and a rod body. The connector is located at one end of the rod body. One end of the connector has a through-type circular groove on its main surface, and the other end has a through-type elliptical groove on its main surface. Both ends of the connector have through-type slots on their sides that communicate with the through-type circular groove and the through-type elliptical groove. The rod body has two sets of clamping parts, and the lower part of the two sets of clamping parts is connected to a doctor blade clamp. The lower part of the doctor blade clamp is equipped with a doctor blade.

[0017] Furthermore, the ink return blade assembly includes a double-ended connecting rod 2, which includes an integrally formed connecting head 2 and a rod body 2. The connecting head 2 is located at the first and second ends of the rod body 2. One end of the connecting head 2 has a through-type circular groove 2 on its main surface, and the other end of the connecting head 2 has a through-type elliptical groove 2 on its main surface. The sides of both ends of the connecting head 2 have through-type bayonets 2 that communicate with the through-type circular groove 2 and the through-type elliptical groove 2. The rod body 2 is provided with two sets of clamping parts 2, and the lower parts of the two sets of clamping parts 2 are connected to an ink return blade plate. An ink return blade is provided at the lower part of the ink return blade plate.

[0018] Furthermore, the cylinder shaft on the double-stroke cylinder has a connector at the end through the guide sleeve, and the lower part of the connector has a flat cut surface that matches the bayonet, and the flat cut surface has a through hole.

[0019] Furthermore, a tracheal support is provided on the side of the printhead support plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. An electric screen printing squeegee mechanism is provided, including a print head module and an electric module. The print head module includes a print head support plate and multiple sets of double-stroke cylinders disposed on both sides of the top surface of the print head support plate. The print head module is mounted on the lower front surface of the bridge plate on the electric module via the print head support plate. Two sets of double-stroke cylinders are connected to a squeegee assembly via cylinder shafts, and the other two sets of double-stroke cylinders are connected to a return ink blade assembly via cylinder shafts. By mounting the print head module on the lower front surface of the bridge plate on the electric module, when the print head module is in its foremost position, the entire print head module is outside the module frame of the electric module. This layout avoids the space occupied by the electric module itself, minimizing the space occupied by the module body and facilitating the operator to handle the printing substrate. This reduces its space occupation without affecting its adjustment and use. Meanwhile, the double-stroke cylinders on the print head support plate are positioned on both sides of the top surface, creating a clearance space in the middle of the top of the print head support plate to prevent the double-stroke cylinders from colliding with the electric module when the print head module moves back and forth.

[0022] 2. By placing the module moving component inside the module frame, this solution overcomes the traditional technique of placing the module moving component protruding from the top or outside of the module frame, which results in the entire module occupying a large space. This solution places the module moving component inside the module frame, making full use of the internal space of the module frame and not occupying the top or external space of the module frame, so that the entire module occupies less space on the entire device.

[0023] 3. Further optimize the layout of the stroke adjustment mechanism. Since the stroke adjustment component is installed within the module frame, this reduces its space occupation without affecting its adjustment and use.

[0024] 4. Two sets of double-stroke cylinders are connected to the doctor blade assembly via cylinder shafts, and two other sets of double-stroke cylinders are connected to the return ink blade assembly via cylinder shafts. The doctor blade assembly and the return ink blade assembly are driven by the double-stroke cylinders to switch between scraping and returning ink. This solves the limitations of the printing area of ​​traditional flatbed screen printing machines, and also solves problems such as excessive size, weight, low safety, and high cost. Attached Figure Description

[0025] Figure 1 The diagram shown is an assembly structure diagram of the electric screen printing scraper arm mechanism;

[0026] Figure 2 The diagram shown is an exploded view of the electric module.

[0027] Figure 3 The diagram shown is a structural diagram of the module frame.

[0028] Figure 4 The diagram shown is a structural diagram of the module's moving component.

[0029] Figure 5 The diagram shown is a side view of the electric module.

[0030] Figure 6 The diagram shown is a structural diagram of the stroke adjustment component;

[0031] Figure 7 The diagram shown is a side view of the stroke adjustment component.

[0032] Figure 8 The diagram shown is a structural diagram of the overall assembly of the printhead module.

[0033] Figure 9 The diagram shown is an exploded view of the printhead module.

[0034] Figure 10 The diagram shown is an exploded view of the doctor blade assembly.

[0035] Figure 11 The diagram shown is an exploded view of the ink return blade assembly.

[0036] In the diagram: 1. Printhead module; 2. Electric module; 3. Doctor blade assembly; 4. Ink return blade assembly; 5. Air manifold; 6. Air pipe support; 11. Printhead support plate; 12. Double-stroke cylinder; 21. Module frame; 22. Module moving assembly; 24. Stroke adjustment assembly; 31. Double-end connecting rod one; 32. Clamp one; 33. Doctor blade clamp; 34. Doctor blade; 41. Double-end connecting rod two; 42. Clamp two; 43. Ink return blade plate; 44. Ink return blade; 121. Cylinder shaft; 122. Guide sleeve; 123. Connector; 211. Short side fixing plate; 212. Long side fixing plate; 213. Support plate; 221. Driving synchronous pulley; 222. Driven synchronous pulley; 223. Synchronous belt; 224. Output shaft; 225. Driven shaft ; 226. Synchronous belt clamp; 227. Bridge plate; 228. Slider connecting plate; 229. Slider; 230. Linear slide rail; 231. Sensor plate; 241. Lead screw; 242. Stroke sliding component; 243. Limiting ring; 244. Sleeve; 245. Handle bolt; 246. Connecting block; 247. Sensor; 311. Connector head one; 312. Rod body one; 411. Connector head two; 412. Rod body two; 1231. Flat cut surface; 1232. Through hole; 2111. Lead screw connecting hole; 2121. Threaded hole; 2431. Flat groove; 2432. Semicircular cavity; 3111. Circular groove one; 3112. Bayonet one; 3113. Elliptical groove one; 4111. Circular groove two; 4112. Bayonet two; 4113. Elliptical groove two. Detailed Implementation

[0037] 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.

[0038] See Figure 1-11This utility model provides a technical solution: an electric screen printing squeegee mechanism, including a print head module 1 and an electric module 2. The print head module 1 includes a print head support plate 11 and multiple sets of double-stroke cylinders 12 disposed on both sides of the top surface of the print head support plate 11. The print head module 1 is mounted on the lower front surface of the bridge plate 227 on the electric module 2 via the print head support plate 11. Two sets of double-stroke cylinders in the multiple sets of double-stroke cylinders 12 are connected to a squeegee assembly 3 via cylinder shafts 121, and the other two sets of double-stroke cylinders are connected to a return ink blade assembly 4 via cylinder shafts 121. By mounting the print head module 1 on the lower front surface of the bridge plate 227 on the electric module 2, when the print head module 1 is in its foremost position, the entire print head module 1 is outside the module frame 21 of the electric module 2. This layout avoids the space occupied by the electric module 2 itself, minimizing the space occupied by the module body and facilitating the operator to handle the printing substrate, thus reducing its space occupation without affecting its adjustment and use. Meanwhile, the double-stroke cylinders 12 on the top surface of the print head support plate 11 are set on both sides, so that the middle position of the top of the print head support plate 11 forms a clearance space to avoid collision between the double-stroke cylinders 12 and the electric module 2 when the print head module 1 moves back and forth.

[0039] See Figure 2 The electric module 2 includes a module frame 21. Inside the module frame 21 is a module moving component 22 and a stroke adjustment component 24 for adjusting the stroke range of the moving component. A drive motor is located on the outer side of the module frame 21, and the drive motor is connected to the module moving component 22. By placing the module moving component 22 inside the module frame 21, this overcomes the limitations of traditional technology where the module moving component 22 protrudes from the top or outside of the module frame 21, resulting in a larger space occupied by the entire module. This solution places the module moving component 22 inside the module frame 21, making full use of the internal space of the module frame 21 without occupying the top or external space of the module frame 21, thus reducing the overall space occupied by the module in the entire device.

[0040] See Figure 3 The module frame 21 is formed by two short-side fixing plates 211 and two long-side fixing plates 212. The main surfaces of the two short-side fixing plates 211 have lead screw connection holes 2111, and the main surfaces of the two long-side fixing plates 212 have several threaded holes 2121. By setting locking fasteners and inserting them into the threaded holes 2121, it is possible to easily connect with other mechanical components in a single-sided installation and fixing manner, thereby improving the support force of the single-sided fixing of the module frame 21. In addition, a support plate 213 is connected between the inner surfaces of the two long-side fixing plates 212. This support plate 213 further consolidates the rigidity of the module frame 21 and provides a support point for the middle section of the lead screw 241, improving the horizontal installation stability of the lead screw 241. (See reference...) Figure 1The module frame 21 is equipped with a sheet metal cover 214. The sheet metal cover 214 has a hollow part for the components to pass through. By setting the sheet metal cover 214, the components inside the module frame 21 are effectively protected, and the hollow part is designed to facilitate the adjustment of the stroke adjustment component 24.

[0041] See Figure 4-5 The module moving component 22 includes an active synchronous pulley 221, a driven synchronous pulley 222, and a synchronous belt 223 connected to the active synchronous pulley 221 and the driven synchronous pulley 222. The drive motor is driven and connected to the active synchronous pulley 221 through the output shaft 224. The output shaft 224 and the driven shaft 225 are provided with bearings 232 at both ends. The bearings 232 are located on the inner side of the long side fixed plate 212. The synchronous belt 223 is provided with a synchronous belt clamp 226. The lower part of the synchronous belt clamp 226 is provided with a bridge plate 227. The upper part of the bridge plate 227 is provided with two sets of slider connecting plates 228. The outer side of each set of slider connecting plates 228 is provided with a slider 229 that is slidably connected to the linear slide rail 230. The linear slide rail 230 is located on the inner side of the long side fixed plate 212. One of the two sets of slider connecting plates 228 is provided with a sensing plate 231 on its upper part.

[0042] See Figure 4-5 The upper rear surface of the bridge plate 227 is connected to the timing belt clamp 226, and the lower front surface of the bridge plate 227 is connected to the middle of the top surface of the print head support plate 11. By connecting the upper rear surface of the bridge plate 227 to the timing belt clamp 226, when the print head module 1 is in its foremost position, the entire print head module 1 is outside the module frame 21 of the electric module 2. This layout avoids the space occupied by the electric module 2 itself, and also makes the operation of the equipment it is located in safer and facilitates the loading and unloading operations of technicians. An air passage manifold 5 is provided on the lower surface of the bridge plate 227 to facilitate the connection of pneumatic components in the print head assembly to the air source.

[0043] See Figure 6-7The stroke adjustment assembly 24 includes two sets of lead screws 241 and two sets of stroke sliders 242 mounted on the two sets of lead screws 241. The two sets of lead screws 241 pass through the support plate 213, and their beginning and end ends are connected to the lead screw connection holes 2111 of the short side fixing plate 211. One of the sets of lead screws 241 has a limiting ring 243 sleeved on the beginning and end of its rod body. The limiting ring 243 serves as the maximum range of adjustment stroke to prevent the stroke slider 242 from exceeding the adjustment range. The two sets of stroke sliders 242 have flat grooves 2431 that pass through them on their sides. The two inner sides of the flat grooves 2431 have semi-circular cavities 2432, and the two semi-circular cavities 2432 together constitute The assembly port allows the lead screw 241 to pass through. The upper part of the two sets of travel sliding members 242 is provided with a sleeve 244 and a through sleeve 244 and a handle bolt 245 that is locked to the travel sliding member 242. The upper part of the handle bolt 245 is exposed in the hollow part of the sheet metal cover 214, which makes it easy for the operator to adjust the stroke. By turning the handle bolt 245, the flat groove 2431 of the travel sliding member 242 is tightened, so that the assembly port clamps the lead screw 241, thus positioning the travel sliding member 242 on the lead screw 241. A connecting block 246 is provided on one side of the two sets of travel sliding members 242, and a sensor 247 that cooperates with the sensing plate 231 is provided on the connecting block 246.

[0044] See Figure 8-10 The doctor blade assembly 3 includes a double-ended connecting rod 31, which includes an integrally formed connector 311 and a rod body 312. The connector 311 is located at the first and second ends of the rod body 312. Through the integral design of the connector 311 and the rod body 312, the assembly gap of the traditional split connector is effectively eliminated, forming an overall rigidity. One end connector 311 has a through-type circular groove 3111 on its main surface, and the other end connector 311 has a through-type elliptical groove 3113 on its main surface. Both ends connector 311 have through-type bayonets 3112 on their sides that communicate with the through-type circular groove 3111 and the through-type elliptical groove 3113. The through-type bayonets 3112 allow the double-end connector 31 to be quickly engaged with the cylinder shaft 121. The through-type circular groove 3111 and the through-type elliptical groove 3113 are for the fastener to pass through. In addition, the through-type elliptical groove 3113 has another purpose: to leave a certain clearance when connected with the fastener, so as to facilitate the stroke cylinder to adjust the left and right level of the doctor blade assembly 3 and prevent jamming. Two sets of clamps 32 are provided on the rod body 312. The lower part of the two sets of clamps 32 is connected to the doctor blade clamp 33. The doctor blade 34 is provided at the lower part of the doctor blade clamp 33. The function of the two clamps 32 is to form a double-support cantilever structure, which significantly improves the stability of the doctor blade assembly 3 during operation.

[0045] See Figure 8-9 , Figure 11The ink return knife assembly 4 includes a double-ended connecting rod 41. The double-ended connecting rod 41 includes an integrally formed connector 411 and a rod body 412. The connector 411 is located at the first and second ends of the rod body 412. Through the integral design of the connector 411 and the rod body 412, the assembly gap of the traditional split connector is effectively eliminated, forming an overall rigidity. One end connector 411 has a through-type circular groove 4111 on its main surface, and the other end connector 411 has a through-type elliptical groove 4113 on its main surface. Both ends connector 411 have through-type bayonets 4112 on their sides that communicate with the through-type circular groove 4111 and the through-type elliptical groove 4113. The through-type bayonets 4112 allow the double-end connector 41 to quickly engage with the cylinder shaft 121. The through-type circular groove 4111 and the through-type elliptical groove 4113 allow the fixing parts to pass through them. In addition, the through-type elliptical groove 4113 has another purpose: to leave a certain clearance when connecting with the fixing parts so that the stroke cylinder can be aligned horizontally with the ink return knife assembly 4 to prevent jamming. Two sets of clamping components 42 are installed on the rod body 412. The lower part of the two sets of clamping components 42 is connected to the ink return blade plate 43. The ink return blade 44 is installed at the lower part of the ink return blade plate 43. The function of the two sets of clamping components 42 is to form a double-support cantilever structure, which significantly improves the stability of the ink return blade assembly 4 during operation.

[0046] See Figure 9-10 The cylinder shaft 121 of the double-stroke cylinder 12 has a connector 123 at its end passing through the guide sleeve 122. The lower part of the connector 123 has a flat surface 1231 that matches the bayonet, and the flat surface 1231 has a through hole 1232. The flat surface 1231 allows the cylinder shaft 121 to be quickly connected to the double-ended connecting rod. The through hole 1232 is used for a fixing component to pass through, so that the cylinder shaft 121 and the double-ended connecting rod are connected together.

[0047] See Figure 8 The side of the print head support plate 11 is provided with a trachea bracket 6 to assist in the installation of the trachea.

[0048] Working principle: The drive motor drives the active synchronous pulley 221, the driven synchronous pulley 222 and the synchronous belt 223 to rotate synchronously through the output shaft 224. The bridge plate 227 moves in a straight line under the transmission of the synchronous belt clamp 226. Since the bridge plate 227 is equipped with a slider 229 and a linear slide rail 230, the entire operation process achieves high speed, stability and smooth movement. The print head module 1 is connected to the bottom of the bridge plate 227 through the print head support plate 11 and moves in a straight line under the drive of the bridge plate 227. The doctor blade assembly 3 and the return blade assembly 4 on the print head module 1 perform extension or retraction actions under the drive of the double stroke cylinder to realize the switching operation of scraping and returning oil.

Claims

1. An electric squeegee arm mechanism comprising a print head module (1) and an electric module (2), characterized in that, The printing head module (1) comprises a printing head support plate (11) and a plurality of groups of double-stroke air cylinders (12) arranged on both sides of the top surface of the printing head support plate (11), the printing head module (1) is arranged on the lower surface of the front end of the bridge plate (227) of the electric module (2) through the printing head support plate (11), two groups of double-stroke air cylinders in the plurality of groups of double-stroke air cylinders are commonly connected with the doctor blade assembly (3) through the air cylinder shafts, and the other two groups of double-stroke air cylinders are commonly connected with the ink return blade assembly (4) through the air cylinder shafts.

2. The motorized screen printing squeegee arm mechanism of claim 1, wherein, The electric module (2) comprises a module frame (21), the inside of the module frame (21) is provided with a module moving assembly (22) and a stroke adjusting assembly (24) for adjusting the stroke range of the module moving assembly, and the outside of the module frame (21) is provided with a driving motor, and the driving motor is drivingly connected with the module moving assembly (22).

3. The motorized screen printing squeegee arm mechanism of claim 2, wherein, The module frame (21) is surrounded by two short edge fixing plates (211) and two long edge fixing plates (212), the main surface of the two short edge fixing plates (211) is provided with a screw rod connecting hole (2111), the main surface of the two long edge fixing plates (212) is provided with a plurality of threaded holes (2121), and the inner side surfaces of the two long edge fixing plates (212) are connected with a support plate (213).

4. The motorized screen printing blade arm mechanism of claim 2, wherein, The module moving assembly (22) comprises a driving synchronous wheel (221), a driven synchronous wheel (222) and a synchronous belt (223) connected to the driving synchronous wheel (221) and the driven synchronous wheel (222), the driving motor is drivingly connected with the driving synchronous wheel (221) through an output shaft (224), the output shaft (224) and the driven shaft (225) are provided with bearings (232) at the first and last sections, the bearings (232) are embedded in the inner side surfaces of the long edge fixing plates (212), the synchronous belt (223) is provided with a synchronous belt clamp (226), the lower part of the synchronous belt clamp (226) is provided with a bridge plate (227), the upper part of the bridge plate (227) is provided with two groups of slide block connecting plates (228), the outer side surfaces of each group of slide block connecting plates (228) are provided with slide blocks (229) slidingly connected with linear slide rails (230), the linear slide rails (230) are arranged on the inner side surfaces of the long edge fixing plates (212), and the upper part of one of the two groups of slide block connecting plates (228) is provided with an inductive sheet (231).

5. The motorized screen printing blade arm mechanism of claim 4, wherein, The upper surface of the rear end of the bridge plate (227) is connected with the synchronous belt clamp (226), the lower surface of the front end of the bridge plate (227) is connected with the middle part of the top surface of the printing head support plate (11), and the lower surface of the bridge plate (227) is provided with an air path bus plate (5).

6. The motorized screen printing arm mechanism of claim 2, wherein, The stroke adjusting assembly (24) comprises two groups of lead screws (241) and two groups of stroke sliders (242) arranged on the two groups of lead screws (241), the two groups of lead screws (241) penetrate through the connecting support plate (213), the first and last ends of the lead screws are connected into the lead screw connecting holes (2111) of the short side fixed plate (211), one of the two groups of lead screws (241) is sleeved with a limiting ring (243) at the first and last sections of the rod body, the two groups of stroke sliders (242) are provided with a flat slot (2431) penetrating through the stroke sliders (242), the opposite two inner sides of the flat slot (2431) are provided with a semicircular cavity (2432), and the two semicircular cavities (2432) jointly form an assembly opening capable of penetrating the lead screw, the two groups of stroke sliders (242) are provided with a sleeve (244) and a handle bolt (245) penetrating through the sleeve (244) and being connected with the stroke sliders, one side of the two groups of stroke sliders (242) is provided with a connecting block (246), and the connecting block (246) is provided with a sensor (247) matched with the inductive sheet (231).

7. The motorized screen printing blade arm mechanism of claim 1, wherein, The ink scraping knife assembly (3) comprises a double-end connecting rod one (31), the double-end connecting rod one (31) comprises an integral connecting head one (311) and a rod body one (312), the connecting head one (311) is arranged at the first and last ends of the rod body one (312), one end of the connecting head one (311) is provided with a penetrating type circular groove one (3111) on the main surface, the other end of the connecting head one (311) is provided with a penetrating type elliptical groove one (3113) on the main surface, and the side surface of the connecting head one (311) is provided with a penetrating type clamping port one (3112) in communication with the penetrating type circular groove one (3111) and the penetrating type elliptical groove one (3113). The rod body one (312) is provided with two groups of clamp pieces one (32), the two groups of clamp pieces one (32) are jointly connected with an ink scraping knife clamp (33) at the lower part, and the ink scraping knife clamp (33) is provided with an ink scraping knife (34) at the lower part.

8. The motorized screen printing squeegee arm mechanism of claim 1, wherein, The ink scraping knife assembly (3) comprises a double-end connecting rod one (31), the double-end connecting rod one (31) comprises an integral connecting head one (311) and a rod body one (312), the connecting head one (311) is arranged at the first and last ends of the rod body one (312), one end of the connecting head one (311) is provided with a penetrating type circular groove one (3111) on the main surface, the other end of the connecting head one (311) is provided with a penetrating type elliptical groove one (3113) on the main surface, and the side surface of the connecting head one (311) is provided with a penetrating type clamping port one (3112) in communication with the penetrating type circular groove one (3111) and the penetrating type elliptical groove one (3113). The rod body one (312) is provided with two groups of clamp pieces one (32), the two groups of clamp pieces one (32) are jointly connected with an ink scraping knife clamp (33) at the lower part, and the ink scraping knife clamp (33) is provided with an ink scraping knife (34) at the lower part.

9. The electric screen printing scraper mechanism according to claim 7 or 8, characterized in that, The joint (123) is provided with a flat surface (1231) matched with the bayonet at the lower part of the joint (123), and the flat surface (1231) is provided with a through hole (1232).

10. The motorized screen printing arm mechanism of claim 1, wherein, The side of the printing head support plate (11) is provided with an air pipe support (6).

Images