Novel man-machine combined walking board printing machine

Abstract

The invention relates to the technical field of walking board printing machines, in particular to a novel man-machine combined walking board printing machine which comprises a frame, a front support positioning mechanism, a rear support positioning mechanism, a movable scraper mechanism and a control panel. Linear sliding rails are arranged on the left side and the right side of the frame, and the front support positioning mechanism is arranged on the front side of the frame and used for positioning the front portion of a printing screen. The rear support positioning mechanism is arranged on the rear side of the frame and used for positioning the rear portion of the printing screen. The movable scraper mechanism can be arranged between the front support positioning mechanism and the rear support positioning mechanism in a sliding mode along a linear sliding rail, a printing screen plate is erected between the front support positioning mechanism and the rear support positioning mechanism, the movable scraper mechanism is provided with a scraper and further provided with an oil return knife mechanism capable of ascending and descending, and the oil return knife mechanism comprises an oil return knife. The oil return cutter mechanism is located in front of the scraper, and an oil return cutter and the scraper are arranged in a staggered mode. And when the scraper scrapes oil for the second time, the returned oil can be scraped again, so that the problem of non-uniform distribution of the printing oil is avoided, and the printing quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of a mobile printing machine, and in particular to a novel human-machine combined mobile printing machine. Background Art

[0002] A stage printing machine is a machine used to transfer printed patterns onto fabrics. In the prior art, its movable scraper mechanism is only equipped with a scraper, and the scraper completes printing by scraping oil on the printing screen during use. The specific method of scraping oil is as follows: the scraper first descends, and the first oil scraping printing is performed from the back to the front of the printing screen. Then, the scraper rises, and then descends, and the second oil scraping printing is performed from the back to the front of the printing screen. In this process, after the first oil scraping, the return oil that has not been absorbed will be pushed from the back of the printing screen to the front. However, when the scraper returns from the front to the back, since the return oil that has not been absorbed cannot be pushed back to the back, this will result in insufficient printing oil during the second oil scraping, which may cause the mesh of the screen to be blocked or the printing oil to be unevenly distributed, seriously affecting the printing quality.

[0003] In addition, the existing rear support base plate is usually positioned manually. Due to the interference of human factors, the rear of the stencil cannot be accurately positioned, which will cause the stencil to shake during use, thereby affecting the printing quality. Summary of the invention

[0004] In view of the above-mentioned technical problems, the present invention provides a new type of man-machine combined walkway printing machine, including a guide rail and a walkway arranged on the guide rail, the guide rail is provided with equidistant positioning columns, the walkway includes a frame, a front support positioning mechanism, a rear support positioning mechanism, a movable scraper mechanism and a control panel; linear slide rails are provided on the left and right sides of the frame, the front support positioning mechanism is arranged on the front side of the frame, and is used to position the front part of the printing screen; the rear support positioning mechanism is arranged on the rear side of the frame, and is used to position the rear part of the printing screen; the movable scraper mechanism can slide along the linear slide rail and is arranged between the front support positioning mechanism and the rear support positioning mechanism, a printing screen is arranged between the front support positioning mechanism and the rear support positioning mechanism, the movable scraper mechanism is provided with a scraper, and the movable scraper mechanism is also provided with an oil return knife mechanism that can be raised and lowered, the oil return knife mechanism includes an oil return knife, the oil return knife mechanism is located in front of the scraper, and the oil return knife and the scraper are arranged at different heights.

[0005] Preferably, the movable scraper mechanism includes a scraper base plate, a first scraper screw motor, a scraper motor mounting plate and a connecting column, the first scraper screw motor is used to drive the scraper to rise and fall, the scraper motor mounting plate is arranged above the scraper base plate, the scraper motor mounting plate is connected to the scraper base plate through a connecting column, the scraper base plate is slidably connected to linear guide rails on both sides, the oil return knife mechanism includes an oil return knife screw motor, an oil return knife lifting plate, an oil return knife connecting shaft, an oil return knife mounting block and an oil return knife; the oil return knife screw motor is arranged on the scraper motor mounting plate, the oil return knife screw motor is connected to the oil return knife lifting plate through its screw nut, oil return knife connecting shafts are provided on both sides of the oil return knife lifting plate, the other end of the oil return knife connecting shaft is connected to the oil return knife mounting block, and an oil return knife is provided on the oil return knife mounting block.

[0006] Preferably, the rear support positioning mechanism also includes a rear support pushing and fine-tuning component for adjusting the position of both sides of the rear part of the printing screen; the rear support pushing and fine-tuning component is arranged at the rear of the rear support plate, and includes a pushing and fine-tuning seat, a pushing and fine-tuning plate, a pushing column and a pushing bolt; the pushing and fine-tuning seat includes two fine-tuning seat blocks arranged at a distance; the pushing and fine-tuning plate is arranged between the fine-tuning seat blocks; strip adjustment holes are arranged on both sides of the pushing and fine-tuning plate; a pushing column is arranged on the front side of the pushing and fine-tuning plate; the pushing column extends out of the pushing and fine-tuning plate.

[0007] Preferably, a rotating pressing block is rotatably provided on the rear support positioning mechanism, and the rotating pressing block presses on the rear support plate.

[0008] Preferably, a counterweight block is also provided on the rotating pressing block.

[0009] Preferably, the stage printing machine also includes two rear support positioning fine-adjustment components for fine-tuning the rear support positioning mechanism, the rear support positioning mechanism includes a rear support base plate, both sides of the rear support base plate are respectively slidably connected to the linear guide rail, the two rear support positioning fine-adjustment components are respectively arranged in front of the base plate of the rear support positioning mechanism, the rear support positioning fine-adjustment components include a rear support positioning fine-adjustment hand wheel and a rear support positioning fine-adjustment connecting block, the rear support positioning fine-adjustment connecting block is Z-shaped, a first mounting hole is provided in the middle part, a second mounting hole is provided in the lower part, an adjustment hole is provided at the corresponding position in front of the base plate, the rear support positioning fine-adjustment connecting block is connected to the corresponding side of the frame through the first mounting hole and a screw, and the rear support positioning fine-adjustment hand wheel is connected to the base plate through the second mounting hole and the adjustment hole.

[0010] Preferably, the front support positioning mechanism includes a front support lifting assembly, an elastic clamping assembly, a positioning column sensing assembly and a front support plate, the front support plate is Z-shaped, a bayonet is provided in the upper middle part thereof, and a locking column is provided on the side of the bayonet, the front support lifting assembly is used for lifting the front support plate, and includes a front support base plate and a front support lifting plate that can be lifted and lowered and is located below the front support base plate, which is located below the front side of the frame, the positioning column sensing assembly is connected to the front support base plate, and is used for sensing the positioning column when the walkway slides on the guide rail, the positioning column sensing assembly and the locking column are not located on the same side of the bayonet, the elastic clamping assembly is connected to the front support lifting plate, and the elastic clamping assembly is connected to the front support plate.

[0011] Beneficial effects:

[0012] The present invention provides a liftable oil return knife mechanism on the front side of the movable scraper mechanism, and the oil return knife and the scraper are arranged at different heights. In this way, during the oil scraping process, when the scraper completes the first oil scraping printing from the back to the front of the printing screen and rises, the oil return knife descends. In the process of the scraper moving from the front to the back of the printing screen, the descending oil return knife can push the return oil back to the back. Subsequently, the oil return knife rises to prepare for the second oil scraping of the scraper. In this way, when the scraper performs the second oil scraping, it can scrape the return oil again, thereby avoiding the problem of uneven distribution of printing oil and improving the printing quality.

[0013] In addition, the present invention provides a rear support pushing and tightening fine-tuning assembly on the rear support plate. The assembly can change the length of the pushing column extending out of the pushing and tightening fine-tuning seat by adjusting the front and rear positions of the pushing and tightening fine-tuning plate on the pushing and tightening fine-tuning seat. Since the rear of the printing screen is against the pushing column, the rear and rear sides of the printing screen and the positioning and equal height screws of the front are accurately positioned. This improvement ensures that the printing screen does not shake during the printing process, thereby ensuring the printing quality.

[0014] In addition, the present invention also provides a rear support positioning fine-tuning assembly for fine-tuning the rear support base plate on both sides of the frame, and the positions of both sides of the rear support base plate can be precisely adjusted by adjusting the rear support positioning fine-tuning hand wheel of the rear support positioning fine-tuning assembly. This adjustment further ensures the stability of the printing screen during the printing process, thereby improving the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the external structure of the platform provided by the present invention;

[0016] Figure 2 A schematic diagram of the internal structure of the platform provided by the present invention;

[0017] Figure 3 A schematic diagram of the front support positioning mechanism provided by the present invention;

[0018] Figure 4 A schematic diagram of the connection relationship between the front support positioning mechanism provided by the present invention, the linear guide rail and the printed screen;

[0019] Figure 5 A three-dimensional diagram of the rear support positioning mechanism provided by the present invention from the rear side;

[0020] Figure 6 A three-dimensional view of the rear support positioning mechanism provided by the present invention from the front side;

[0021] Figure 7 A three-dimensional view of the rear side of the movable scraper mechanism provided by the present invention;

[0022] Figure 8 An exploded view of the structure of the rotary adjustment assembly of the movable scraper mechanism provided by the present invention in the rear direction;

[0023] Fig. 9 This is a three-dimensional view of the front side of the movable scraper mechanism provided by the present invention.

[0024] Labeling: frame 1, linear guide rail 11, control panel 12, front support positioning mechanism 2, front support base plate 21, front screw lifting motor 221, front support lifting plate 222, front connecting side plate 231, front locking plate 232, front slider 233, front slide rail 234, front compression spring 235, front connecting block 240, front support plate 241, bayonet 2411, clamping column 2412, connecting part 251, U-shaped mounting part 252, through-beam sensor 253, rear support positioning mechanism 3, rear Support base plate 31, reverse L-shaped fine-tuning plate 311, rear screw lifting motor 321, rear lifting plate 322, rear screw translation motor 331, rear translation fixing plate 332, rear translation plate 333, rear support compression spring 341, rear support connecting block 342, pressure block connecting block 351, rotating pressure block 352, rear support plate 36, pushing fine-tuning seat 371, pushing fine-tuning plate 372, strip adjustment hole 3721, pushing bolt 3722, pushing column 373, rear support positioning fine-tuning assembly 38, Rear support positioning fine-tuning hand wheel 381, rear support positioning fine-tuning connecting block 382, ​​first mounting hole 3821, movable scraper mechanism 4, scraper base plate 41, scraper motor mounting plate 42, connecting column 412, first scraper screw motor 4311, first scraper lifting plate 4312, first scraper connecting shaft 4313, second scraper screw motor 4321, second scraper lifting plate 4322, rotating rod 4323, angle fixing rod 4324, scraper rotating shaft fixing block 433, connecting rod Hole 4331, scraper rotating shaft adjustment block 434, adjusting rotating shaft 4341, first shaft hole 4342, second shaft hole 4343, first scraper rotating shaft 435, second scraper rotating shaft 436, rotating bearing 437, scraper mounting block 44, scraper 45, oil return knife screw motor 461, oil return knife lifting plate 462, oil return knife connecting shaft 463, oil return knife mounting block 464, oil return knife 465, printing screen plate 5, T-shaped positioning block 51, guide rail 6, positioning column 61. DETAILED DESCRIPTION

[0025] In order to more clearly explain the technical content of the present invention, it is described in detail in conjunction with specific embodiments and drawings. Obviously, the enumerated embodiments are only preferred implementation schemes of the present technical solution, and other technical solutions that can be obviously derived by technicians in this field based on the disclosed technical content still belong to the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "front" and "rear" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, mainly to distinguish similar objects, and are not used to describe a specific order or sequence.

[0027] like Figure 1-9 As shown, a new type of man-machine combined platform printing machine includes a guide rail and a platform arranged on the guide rail, and the guide rail is provided with positioning columns with equal intervals. The platform includes a frame 1, a front support positioning mechanism 2, a rear support positioning mechanism 3, a movable scraper mechanism 4 and a control panel 12; the left and right sides of the frame 1 are provided with linear slide rails 11, the front support positioning mechanism 2 is arranged on the front side of the frame 1, and is used to position the front part of the printing screen; the rear support positioning mechanism 3 is arranged on the rear side of the frame 1, and is used to position the rear part of the printing screen; the movable scraper mechanism 4 can move along The linear slide rail 11 is slidably arranged between the front support positioning mechanism 2 and the rear support positioning mechanism 3. A printing screen is set between the front support positioning mechanism 2 and the rear support positioning mechanism 3. A T-shaped positioning block is arranged in the middle of the front end of the printing screen. Positioning screws of equal height are symmetrically arranged on both sides of the front end. The movable scraper mechanism 4 is provided with a scraper 45. The movable scraper mechanism 4 is also provided with an oil return knife mechanism that can be raised and lowered. The oil return knife mechanism includes an oil return knife. The oil return knife mechanism is located in front of the scraper 45, and the oil return knife and the scraper 45 are staggered in height.

[0028] In order to enable the scraper 45 to be tilted to scrape oil, the movable scraper mechanism 4 includes a scraper base plate 41, a scraper motor mounting plate 42 and a connecting column 412. The scraper motor mounting plate 42 is connected to the scraper base plate 41 through the connecting column 412. The scraper base plate 41 is slidably connected to the linear guide rails on both sides. A first scraper lead screw motor 4311 is provided on the scraper motor mounting plate 42. The first scraper lead screw motor 4311 is connected to the first scraper lifting plate 4312 through its lead screw nut. First scraper connecting shafts 4313 are provided on both sides of the first scraper lifting plate 4312. The first scraper connecting shaft 4313 is connected to the scraper mounting block 44, and a scraper 45 is installed under the scraper mounting block 44. In order to enable the scraper 45 to rotate an angle to scrape oil from the printing screen during use, the movable scraper mechanism 4 also includes a second scraper screw motor 4321, a second scraper lifting plate 4322, a rotating rod 4323, an angle fixing rod 4324, and a rotating adjustment component. The scraper motor mounting plate 42 is provided with a second scraper screw motor 4321, and the second scraper screw motor 4321 is connected to the second scraper lifting plate 4322 through its screw nut. A rotating rod 4323 is provided on one side of the second scraper lifting plate 4322, and the other end of the rotating rod 4323 is connected to the angle fixing rod 4324, which is connected to the rotating adjustment component. The rotating adjustment component is connected to the scraper 45 mounting plate, and the rotating adjustment component, the first scraper connecting shaft 4313, the rotating rod 4323, and the angle fixing rod 4324 together constitute a connecting rod mechanism to drive the scraper 45 to rotate; The rotation adjustment component includes a scraper rotation shaft fixing block 433, a scraper rotation shaft adjustment block 434, a first scraper rotation shaft 435, a second scraper rotation shaft 436, and a rotation bearing 437; the scraper rotation shaft adjustment block 434 is provided with an adjustment rotation shaft 4341, a first shaft hole 4342 and a second shaft hole 4343, the first scraper rotation shaft 435 is arranged in the first shaft hole 4342, and the second scraper rotation shaft 436 is arranged in the second shaft hole 4343; the scraper rotation shaft fixing block 433 is connected with the first scraper connecting shaft 4313 and the adjustment rotation shaft 4341 of the scraper rotation shaft adjustment block 434 through its connecting hole 4331, the adjustment rotation shaft 4341 is sleeved with a rotation bearing 437, the rotation bearing 437 is arranged in the scraper rotation shaft fixing block 433, the first scraper rotation shaft 435 and the second scraper rotation shaft 436 are connected with the scraper mounting block 44.

[0029] The oil return knife mechanism includes an oil return knife screw motor 461, an oil return knife lifting plate 462, an oil return knife connecting shaft, an oil return knife mounting block and an oil return knife; the oil return knife screw motor 461 is arranged on the scraper motor mounting plate 42, the oil return knife screw motor 461 is connected to the oil return knife lifting plate 462 through its screw nut, oil return knife connecting shafts are arranged on both sides of the oil return knife lifting plate 462, the other end of the oil return knife connecting shaft is connected to the oil return knife mounting block, and the oil return knife is arranged on the oil return knife mounting block.

[0030] The rear support positioning mechanism 3 includes a rear support base plate 31, a rear support lifting assembly, a rear support translation assembly, a rear support connecting assembly and a rear support plate 36. Both sides of the rear support base plate 31 are slidably connected to the linear guide rails. The rear support lifting assembly is connected to the rear support base plate 31, the rear support translation assembly is connected to the rear support lifting assembly, and the rear support translation assembly is connected to the rear support connecting assembly. The rear support lifting assembly includes a rear screw lifting motor 321 and a rear lifting plate 322. The rear screw lifting motor 321 is arranged on the rear support base plate 31 and is connected to the rear lifting plate 322 through its screw nut; the rear support translation assembly includes a rear screw translation motor 331, a rear translation fixing plate 332, and a rear translation plate 333 The rear translation fixing plate 332 is connected to the rear translation plate 333, and the rear screw translation motor 331 is provided on the outer side of the rear translation fixing plate 332. The rear screw translation motor 331 is connected to the rear translation fixing plate 332 through its screw nut; there are two rear support connecting components, which are arranged on both sides of the front side of the rear translation plate 333. The rear support plate 36 connecting component includes a rear connecting shaft, a rear support connecting block 342, and a rear support compression spring 341. One end of the rear connecting shaft is connected to the rear translation plate 333, and the other end is sleeved in the shaft hole of the rear support connecting block 342. The rear connecting shaft is sleeved with a rear support compression spring 341, and the bottom of the rear support connecting block 342 is connected to the rear support plate 36.

[0031] Pressure block connection blocks 351 are provided on both sides of the rear support plate 36 connection assembly. The pressure block connection blocks 351 are hinged with the rotating pressure blocks 352. The rotating pressure blocks 352 are arranged above the rear support plate 36. A counterweight block is attached to the rotating pressure blocks 352, which helps to keep the printing screen stable during the printing process and ensure the printing quality.

[0032] The rear support positioning mechanism 3 also includes a rear support pushing and fine-tuning assembly for adjusting the positions of both sides of the rear part of the printing screen. The rear support pushing and fine-tuning assembly is arranged at the rear of the rear support plate 36, and includes a pushing and fine-tuning seat 371, a pushing and fine-tuning plate 372, a pushing column 373 and a pushing bolt 3722. The pushing and fine-tuning seat 371 includes two fine-tuning seat blocks arranged at a distance, and the pushing and fine-tuning plate 372 is mounted between the fine-tuning seat blocks. The pushing and fine-tuning plate 372 is provided with strip adjustment holes 3721 on both sides of the pushing and fine-tuning plate 372. The front side of the pushing and fine-tuning plate 372 is provided with a pushing column 373, and the pushing column 373 extends out of the pushing and fine-tuning plate 372. The setting of the rear support pushing and fine-tuning assembly enables the position of the rear support positioning mechanism to be precisely fine-tuned, further improving the accuracy of printing. In addition, it also enables the printing machine to adapt to printing tasks of different sizes and shapes, thereby improving production efficiency and flexibility.

[0033] After the rear support positioning mechanism is manually slid and positioned, in order to facilitate further positioning of the rear support positioning mechanism, improve the positioning accuracy of the rear support positioning mechanism and improve the positioning efficiency, the walking printing machine also includes two rear support positioning fine-adjusting components 38 for fine-tuning the rear support positioning mechanism 3. The rear support positioning mechanism 3 includes a rear support base plate 31, and both sides of the rear support base plate 31 are respectively connected to the linear guide rails for sliding. The two rear support positioning fine-adjusting components 38 are respectively arranged in front of the rear support base plate 31 of the rear support positioning mechanism 3, and the bottom of both sides of the rear support base plate 31 are provided with an inverted L-shaped The fine-tuning plate 311, the rear support positioning fine-tuning assembly 38 includes a rear support positioning fine-tuning hand wheel 381 and a rear support positioning fine-tuning connecting block 382. The rear support positioning fine-tuning connecting block 382 is Z-shaped, with a first mounting hole 3821 in the middle and a second mounting hole in the lower part. An adjustment hole is provided at the corresponding position in front of the substrate. The rear support positioning fine-tuning connecting block 382 is connected to the corresponding side of the frame 1 through the first mounting hole 3821 and a screw, and the rear support positioning fine-tuning hand wheel 381 is connected to the inverted L-shaped fine-tuning plate 311 of the substrate through the second mounting hole and the adjustment hole.

[0034] The front support lifting assembly also includes a front support base plate 21, a front screw lifting motor 221, and the front screw lifting motor 221 is arranged on the front support base plate 21 and is connected to the front support lifting plate 222 through its screw nut; the front support base plate 21 is located on the front side of the frame 1, and the elastic clamping assembly includes a front connecting side plate 231 arranged on both sides of the front support lifting plate 222, and a front locking plate 232 is movably arranged between the two front connecting side plates 231, and a group of sliding guide assemblies are respectively arranged on both sides of the upper surface of the front locking plate 232, and the sliding guide assembly includes a front slide rail 234 and a front slider 233, and the front slide rail 234 is vertically connected to the corresponding front connecting side plate 231, and the front slider 233 is fixedly arranged on the upper surface of the front locking plate 232, and an axial hole is arranged on the front connecting side plate 231, and a connecting shaft is arranged at the end of the front locking plate 232, and the connecting shaft is movably arranged in the axial hole, A front compression spring 235 is sleeved on the outer side of the connecting shaft; a front supporting mounting block is also provided at the bottom of the front locking plate 232, and a front supporting plate 241 is connected to the front side of the front supporting mounting block; the positioning column sensing assembly includes a sensing mounting block and a beam sensor 253; the sensing mounting block includes an inverted U-shaped mounting portion 252 and a connecting portion 251; the end of the connecting portion 251 is connected to the front supporting base plate 21; the beam sensor 253 is symmetrically mounted on the inner wall of the U-shaped mounting portion 252; the front supporting plate 241 is Z-shaped, and a bayonet 2411 is provided on the middle portion thereof; a locking column 2412 is provided on the side of the bayonet 2411; the front supporting lifting assembly is used for lifting and lowering the front supporting plate 241; the positioning column sensing assembly and the locking column 2412 are not located on the same side of the bayonet 2411; the elastic clamping assembly is connected to the front supporting lifting plate 222; and the elastic clamping assembly is connected to the front supporting plate 241 through the front connecting plate 240. When in use, in the initial state, the T-shaped positioning block of the printing screen is arranged on the opening of the front support plate 241, and the walkway moves along the guide rail. When the positioning column sensing assembly senses the positioning column, it stops moving, and the front support plate 241 descends. The positioning column collides with the T-shaped positioning block, causing the front slider 233 to move, and the front compression spring 235 is compressed, tightly clamping the T-shaped positioning block between the positioning column and the locking column 2412, which helps to make the printing screen more stable.

[0035] The embodiments described above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new type of man-machine combined printing machine, characterized by: It includes a guide rail and a walkway arranged on the guide rail, the guide rail is provided with positioning columns with equal intervals, the walkway includes a frame, a front support positioning mechanism, a rear support positioning mechanism, a movable scraper mechanism and a control panel; linear slide rails are provided on the left and right sides of the frame, the front support positioning mechanism is arranged on the front side of the frame, and is used to position the front part of the printing screen; the rear support positioning mechanism is arranged on the rear side of the frame, and is used to position the rear part of the printing screen; the movable scraper mechanism can slide along the linear slide rail and is arranged between the front support positioning mechanism and the rear support positioning mechanism, a printing screen is mounted between the front support positioning mechanism and the rear support positioning mechanism, the movable scraper mechanism is provided with a scraper, and the movable scraper mechanism is also provided with an oil return knife mechanism that can be lifted and lowered, the oil return knife mechanism includes an oil return knife, the oil return knife mechanism is located in front of the scraper, and the oil return knife and the scraper are arranged at different heights.

2. According to claim 1, the novel man-machine combined walking table printing machine is characterized in that: The movable scraper mechanism includes a scraper base plate, a first scraper screw motor, a scraper motor mounting plate and a connecting column. The first scraper screw motor is used to drive the scraper to rise and fall. The scraper motor mounting plate is arranged above the scraper base plate. The scraper motor mounting plate is connected to the scraper base plate through a connecting column. Both sides of the scraper base plate are slidably connected to linear guide rails. The oil return knife mechanism includes an oil return knife screw motor, an oil return knife lifting plate, an oil return knife connecting shaft, an oil return knife mounting block and an oil return knife; the oil return knife screw motor is arranged on the scraper motor mounting plate, and the oil return knife screw motor is connected to the oil return knife lifting plate through its screw nut. Oil return knife connecting shafts are arranged on both sides of the oil return knife lifting plate. The other end of the oil return knife connecting shaft is connected to the oil return knife mounting block, and an oil return knife is arranged on the oil return knife mounting block.

3. The novel man-machine combined platform printing machine according to claim 1 is characterized in that: The rear support positioning mechanism also includes a rear support pushing and fine-tuning component for adjusting the positions of both sides of the rear part of the printing screen. The rear support pushing and fine-tuning component is arranged at the rear of the rear support plate, and includes a pushing and fine-tuning seat, a pushing and fine-tuning plate, a pushing column and a pushing bolt. The pushing and fine-tuning seat includes two fine-tuning seat blocks set at a distance. The pushing and fine-tuning plate is mounted between the fine-tuning seat blocks. Strip adjustment holes are provided on both sides of the pushing and fine-tuning plate. A pushing column is provided on the front side of the pushing and fine-tuning plate. The pushing column extends out of the pushing and fine-tuning plate.

4. The novel man-machine combined printing machine according to claim 1 is characterized in that: The rear support positioning mechanism is also rotatably provided with a rotating pressing block, and the rotating pressing block is pressed on the rear support plate.

5. The novel man-machine combined printing machine according to claim 4 is characterized in that: A counterweight block is also attached to the rotating pressing block.

6. The novel man-machine combined printing machine according to claim 1 is characterized in that: The walking stage printing machine also includes two rear support positioning fine-adjusting components for fine-tuning the rear support positioning mechanism, the rear support positioning mechanism includes a rear support base plate, both sides of the rear support base plate are respectively connected to the linear guide rail for sliding, the two rear support positioning fine-adjusting components are respectively arranged in front of the base plate of the rear support positioning mechanism, the rear support positioning fine-adjusting components include a rear support positioning fine-adjusting hand wheel and a rear support positioning fine-adjusting connecting block, the rear support positioning fine-adjusting connecting block is Z-shaped, a first mounting hole is provided in the middle part, a second mounting hole is provided in the lower part, an adjustment hole is provided at the corresponding position in front of the base plate, the rear support positioning fine-adjusting connecting block is connected to the corresponding side of the frame through the first mounting hole and a screw, and the rear support positioning fine-adjusting hand wheel is connected to the base plate through the second mounting hole and the adjustment hole.

7. The novel man-machine combined printing machine according to claim 1 is characterized in that: The front support positioning mechanism includes a front support lifting assembly, an elastic clamping assembly, a positioning column sensing assembly and a front support plate. The front support plate is Z-shaped and has a bayonet in the upper middle portion thereof. A locking clamping column is provided on the side of the bayonet. The front support lifting assembly is used to lift the front support plate and includes a front support base plate and a front support lifting plate that can be lifted and lowered and is located below the front support base plate. The front support lifting plate is located below the front side of the frame. The positioning column sensing assembly is connected to the front support base plate and is used to sense the positioning column when the walkway slides on the guide rail. The positioning column sensing assembly and the locking clamping column are not located on the same side of the bayonet. The elastic clamping assembly is connected to the front support lifting plate, and the elastic clamping assembly is connected to the front support plate.

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