Steel plate printing press

Abstract

The present invention proposes a steel plate printing machine, which relates to the field of printing, and includes: a machine platform; a convex printing platform, which is arranged on the machine platform, used to carry the printed workpiece, and can be moved on the machine platform; an oil cup steel plate module, which is arranged on the machine platform and can be moved on the machine platform; the oil cup steel plate module includes a printing steel plate etched with a pattern to be printed and an oil cup for applying ink to the printing steel plate; a pad printing module, which includes a printing device, a first driving device and a second driving device, and the pad printing module is used to transfer the pattern on the printing steel plate to the workpiece to be printed on the convex printing platform; the first transfer mechanism and the second transfer mechanism are both arranged on the machine platform, and the two are respectively used to drive the convex printing platform and the oil cup steel plate module to move to the bottom of the printing device, or away from the bottom of the printing device. It can meet the printing requirements of large-area patterns while occupying a small space, and is convenient for automated pad printing work, and can meet the needs of pad printing of curved workpieces to be printed.

Description

Technical Field

[0001] The invention relates to the field of printing, and in particular to a steel plate printing press. Background Art

[0002] At present, pad printing is a commonly used printing technology, which is suitable for plastics, toys, glass, metal, ceramics, electronics, IC seals, etc. In the prior art, ink is first poured onto a steel plate etched with a pattern, and the printer operates tools such as a pad printing plate to first attach the pattern on the steel plate to the pad printing plate, and then pad printing the pattern on the pad printing plate onto the workpiece to be printed. Pad printing often requires the operator to manually operate the pad printing plate to pad the pattern on the mold onto the product to be printed, which is inconvenient. The pad printing plate cannot perform pad printing operations on curved surfaces of the workpiece to be printed. At the same time, when the pattern area is large, the area of ​​the pad printing plate used is also large, and the space occupied is also large. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a steel plate printing machine, which can meet the requirements of pad printing of curved surfaces to be printed while occupying a small space, can meet the printing requirements of large-area patterns while occupying a small space, and is also convenient for automated pad printing.

[0004] The first aspect of the present invention provides a steel plate printing machine, comprising: a machine platform; a convex printing platform, which is arranged on the machine platform, used to carry a printed piece and can move on the machine platform; an oil cup steel plate module, which is arranged on the machine platform and can move on the machine platform; the oil cup steel plate module includes a printing steel plate and an oil cup, the printing steel plate is etched with a pattern to be printed, and the oil cup is used to apply ink to the printing steel plate; a pad printing module, which is arranged on the machine platform, the pad printing module includes a printing device and a first drive device and a second drive device, the printing device includes a printing belt and a printing drive structure, and the printing drive structure Used to drive the printing belt to rotate back and forth, the first driving device is used to drive the printing device to move up and down, the second driving device is used to drive the printing device to move along the length direction parallel to the printing steel plate, and the printing belt is used to transfer the ink on the printing steel plate to the printed part on the convex printing table; the first transfer mechanism is arranged on the machine platform, and is used to drive the convex printing table to move to the bottom of the printing device, or away from the bottom of the printing device; the second transfer mechanism is arranged on the machine platform, and is used to drive the oil cup steel plate module to move to the bottom of the printing device, or away from the bottom of the printing device.

[0005] The tensioning mechanism according to the embodiment of the present invention has at least the following technical effects:

[0006] The steel plate printing machine of the present invention is provided with a pad printing module, an oil cup steel plate module and a convex printing table, and the above components can move relative to each other, and the pad printing operation between the oil cup steel plate module and the convex printing table is realized through the pad printing module. In addition, the printing device includes a printing belt and a printing drive structure, and the bottom of the printing belt is brought into contact with the printing steel plate coated with ink through the mutual movement between the printing device and the oil cup steel plate module and the convex printing table, and the printing belt is rotated and the printing device is synchronously moved horizontally, so that the pattern on the printing steel plate can be transferred to the printing belt. Further, through similar actions, the printing belt with the pattern is moved to the convex printing table, and the bottom of the printing belt is brought into contact with the workpiece to be printed, and the printing belt is rotated and the printing device is synchronously moved along the contour of the workpiece to be printed, so that the pattern on the printing belt can be transferred to the workpiece to be printed. Through such a setting, the pad printing operation of a large area pattern can be realized through a flexible printing belt, avoiding the problem of using a large area of ​​rigid printing steel plate, which leads to a large space occupation.

[0007] According to some embodiments of the present invention, it further includes a gantry disposed on the machine platform, and the printing device, the first driving device and the second driving device are all disposed on the gantry.

[0008] According to some embodiments of the present invention, a first guide rail is further included, which is arranged on the machine and passes through under the gantry. The convex printing table and the oil cup steel plate module are both slidably connected to the first guide rail and are moved by the first transfer mechanism and the second transfer mechanism respectively.

[0009] According to some embodiments of the present invention, it also includes: a second guide rail, which is arranged on the gantry and is parallel to the printing steel plate; a first driving device, including a horizontal slide and a first driver, the horizontal slide is slidably connected to the second guide rail, and the first driver is used to drive the horizontal slide to slide along the second guide rail; a third guide rail, which is arranged on the horizontal slide in a vertical direction; the second driving device includes a lifting frame and a second driver, the lifting frame is slidably connected to the third guide rail, and the second driver is used to drive the lifting frame to slide along the third guide rail; the printing device is arranged on the lifting slide.

[0010] According to some embodiments of the present invention, the printing device also includes a tensioning mechanism, which includes: a driving rod; two driving arms, wherein the first ends of the two driving arms are respectively connected to the driving rod, and the first ends can move along the driving rod; a tensioning member, wherein the second ends of the two driving arms are both connected to the tensioning member; wherein, when the two first ends move toward each other, the tensioning member can move in a direction away from the driving rod under the push of the second end, and the tensioning member abuts against the printing belt to tension the printing belt.

[0011] According to some embodiments of the present invention, the tensioning mechanism also includes: two first connecting members, one end of which is sleeved on the driving rod and can move along the driving rod, and the other ends of the two first connecting members are respectively connected to the two first ends; two second connecting members, the second connecting members are threadedly connected to the driving rod, and the two second connecting members are respectively connected to the two first connecting members through springs; wherein the thread directions of the two second connecting members connected to the driving rod are opposite, and by rotating the driving rod, the two second connecting members can move toward or away from each other, thereby driving the two first connecting members to move toward or away from each other.

[0012] According to some embodiments of the present invention, the oil cup steel plate module also includes an oil cup driving structure and a fourth guide rail, and the fourth guide rail is arranged parallel to the printed steel plate. The oil cup driving structure includes: a driving part, which is slidably connected to the fourth guide rail and driven by a cylinder to move on the fourth guide rail; a pushing part, which is connected to the oil cup and is used to drive the oil cup to move on the printed steel plate; and a connecting part, whose two ends are respectively connected to the driving part and the pushing part.

[0013] According to some embodiments of the present invention, the pushing portion is a circular ring piece, the oil cup is arranged in the middle of the circular ring piece, and can be driven by the circular ring piece.

[0014] According to some embodiments of the present invention, a steel plate placement groove is provided on the machine platform, and the printing steel plate is detachably disposed in the steel plate placement groove.

[0015] According to some embodiments of the present invention, a cleaning device is further included, and the cleaning device includes: a cleaning frame, which is arranged on the machine; a raw material roller, which is arranged on the cleaning frame; a cleaning roller, which is arranged on the cleaning frame; and a recovery roller, which is arranged on the cleaning frame; wherein the raw material roller, the cleaning roller, and the recovery roller are connected by a raw material film.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic structural diagram of a steel plate printing machine according to an embodiment of the present invention;

[0019] Figure 2 is a structural schematic diagram of a steel plate printing machine from another perspective in an embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the structure of the printing device in the embodiment of the present invention

[0021] Figure 4 It is a structural schematic diagram of a tensioning mechanism in an embodiment of the present invention;

[0022] Figure 5 for Figure 1 A magnified view of position A in the middle;

[0023] Figure 6 Schematic diagram of the structure of the oil cup transfer device in the embodiment of the present invention;

[0024] Figure 7 Schematic diagram of the structure of the cleaning device in an embodiment of the present invention.

[0025] Reference numerals:

[0026] Printing device 100, printing drive structure 110, tensioning mechanism 120, tensioning wheel 121, driving rod 122, driving arm 123, first end 1231, second end 1232, tensioning member 124, connecting member 125, second connecting member 126, spring 127, rotating shaft 128, printing belt 130, oil cup steel plate module 200, oil cup 210, printing steel plate 220, fourth guide rail 230, oil cup driving structure 240, pushing part 241, connecting part 242, driving part 243, convex printing table 300, cleaning device 400, raw material roller 410, cleaning roller 420, recovery roller 430, raw material film 440, machine table 500, first guide rail 510, gantry 600, second guide rail 610, first driving device 620, third guide rail 621, second driving device 622. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0031] Reference below Figures 1 to 7 A stencil printing press according to an embodiment of the present invention is described.

[0032] Reference Figures 1 to 3 , Figures 1 to 3 The steel plate printing machine according to an embodiment of the present invention is shown, comprising: a machine platform 500; a convex printing platform 300, which is arranged on the machine platform 500, used to carry a printed piece and can move on the machine platform 500; an oil cup steel plate module 200, which is arranged on the machine platform 500 and can move on the machine platform 500; the oil cup steel plate module 200 includes a printing steel plate 220 and an oil cup 210, the printing steel plate 220 is etched with a pattern to be printed, and the oil cup 210 is used to apply ink to the printing steel plate 220; a pad printing module, which is arranged on the machine platform 500, and includes a printing device 100 and a first driving device 620 and a second driving device 622, the printing device 100 includes a printing belt 130 and a printing drive structure 110, and the printing The brush drive structure 110 is used to drive the printing belt 130 to rotate back and forth, the first drive device 620 is used to drive the printing device 100 to move up and down, the second drive device 622 is used to drive the printing device 100 to move along the length direction parallel to the printing steel plate 220, and the printing belt 130 is used to transfer the ink on the printing steel plate 220 to the printed part on the convex printing table 300; the first transfer mechanism is arranged on the machine table 500, and is used to drive the convex printing table 300 to move to the bottom of the printing device 100, or away from the bottom of the printing device 100; the second transfer mechanism is arranged on the machine table 500, and is used to drive the oil cup steel plate module 200 to move to the bottom of the printing device 100, or away from the bottom of the printing device 100.

[0033] The steel plate printing machine of the present invention is provided with a pad printing module, an oil cup steel plate module 200 and a convex printing table 300, and the above components can move relative to each other, and the pad printing operation between the oil cup steel plate module 200 and the convex printing table 300 is realized through the pad printing module. In addition, the printing device 100 includes a printing belt 130 and a printing drive structure 110, and the bottom of the printing belt 130 is brought into contact with the printing steel plate 220 coated with ink through the mutual movement between the printing device 100, the oil cup steel plate module 200, and the convex printing table 300, and the printing belt 130 is rotated and the printing device 100 is synchronously moved horizontally, so that the pattern on the printing steel plate 220 can be transferred to the printing belt 130. Further, through similar actions, the printing belt 130 with the pattern is moved to the convex printing table 300, and the bottom of the printing belt 130 is brought into contact with the workpiece to be printed, the printing belt 130 is rotated and the printing device 100 is synchronously moved along the contour of the workpiece to be printed, so that the pattern on the printing belt 130 can be transferred to the workpiece to be printed. Through such an arrangement, the pad printing operation of a large area pattern can be realized through the flexible printing belt 100, avoiding the problem of using a large area of ​​rigid printing steel plate 220, which leads to a large space occupation. It can be understood that the printing table can be a convex printing table 300 or a flat printing table, and both can be pad printed by the above method.

[0034] Reference Figure 1 and Figure 2 In some embodiments, the steel plate printing press further includes a gantry 600 disposed on the machine platform 500 , and the printing device 100 , the first driving device 620 , and the second driving device 622 are all disposed on the gantry 600 .

[0035] The gantry 600 is erected above the machine platform 500, so that the printing device 100 is disposed above the machine platform 500 and can move on the gantry 600 in a vertical direction or in a direction parallel to the printing plate 220. At the same time, it is convenient for other components to pass through the bottom of the gantry 600. Similarly, the printing device 100 can also be suspended above the machine platform 500 without being connected to the machine platform 500.

[0036] Reference Figure 1 and Figure 2 In some embodiments, the steel plate printing machine also includes a first guide rail 510, which is disposed on the machine platform 500 and passes through the bottom of the gantry 600. The convex printing table 300 and the oil cup steel plate module 200 are both slidably connected to the first guide rail 510 and are moved by the first transfer mechanism and the second transfer mechanism respectively.

[0037] By setting the first transfer mechanism and the second transfer mechanism, the convex printing table 300 and the oil cup steel plate module 200 can slide along the first guide rail 510 on the machine table 500, and the printing device 100 can also move on the gantry 600 through the first drive device 620 and the second drive device 622. It is worth understanding that cylinders can also be set separately to drive the convex printing table 300, the oil cup steel plate module 200 and the printing device 100 to move, and manual drive and position adjustment can also be adopted. In addition, the driving method can also adopt other driving devices, which is not limited to this.

[0038] Reference Figure 1 Furthermore, the steel plate printing machine also includes: a second guide rail 610, which is arranged on the gantry 600 and is parallel to the printing steel plate 220; a first driving device 620, which includes a horizontal slide and a first driver, the horizontal slide is slidably connected to the second guide rail, and the first driver is used to drive the horizontal slide to slide along the second guide rail; a third guide rail 621 is arranged on the horizontal slide in a vertical direction; the second driving device 622 includes a lifting frame and a second driver, the lifting frame is slidably connected to the third guide rail 621, and the second driver is used to drive the lifting frame to slide along the third guide rail; the printing device 100 is arranged on the lifting slide.

[0039] In some embodiments, both the first driver and the second driver are motor screw drivers, and are used to drive the horizontal slide and the lifting frame to move along the second guide rail 610 and the third guide rail 621 respectively.

[0040] It is understandable that, referring to Figure 1 In this structure, a second guide rail 610 is provided on the gantry 600, and a horizontal slide in the first driving device 620 is slidably connected to the second guide rail 610, and the horizontal slide is driven by the first driver. In addition, in some embodiments, the horizontal slide is a plate-shaped structure for setting a third guide rail 621, and the second guide rail 610 has two, which are respectively arranged corresponding to the upper and lower sides of the horizontal slide, so that the first driving device 620 can move more smoothly. Further, the third guide rail 621 is arranged on the horizontal slide, so that it can move in a direction parallel to the printing steel plate 220 with the first driving device 620. The third guide rail 621 is perpendicular to the second guide rail 610, and the lifting frame is slidably connected to the third guide rail 621, and the lifting frame is also connected to the printing device 100, so that the printing device 100 can move in a vertical direction along the third guide rail 621. Through such an arrangement, the printing device 100 can move in a vertical direction or a horizontal direction (parallel to the direction of the printing steel plate 220) on the gantry 600.

[0041] Reference Figure 3 and Figure 4In some embodiments, the printing device 100 further includes a tensioning mechanism 110, which includes: a driving rod 122; two driving arms 123, the first ends 1231 of the two driving arms 123 are respectively connected to the driving rod 122, and the first ends 1231 can move along the driving rod 122; a tensioning member 124, the second ends 1232 of the two driving arms 123 are both connected to the tensioning member 124; wherein, when the two first ends 1231 move toward each other, the tensioning member 124 can move in a direction away from the driving rod 122 under the push of the second end 1232, and the tensioning member 124 abuts against the printing belt 130 to tension the printing belt 130. And, referring to Figure 1 and Figure 3 The printing device 100 further includes a housing, and components such as a printing belt 130 are arranged inside the housing. When the printing device 100 needs to work, the housing is removed to expose the printing belt 130.

[0042] It can be understood that the first end 1231 and the driving rod 122, and the second end 1232 and the tensioning member 124 are both rotationally connected to enable the two driving arms 123 to swing between the driving rod 122 and the tensioning member 124, so that the second end 1232 and the tensioning member 124 can move away from or close to the driving rod 122 to adjust the tensioning degree of the tensioning mechanism 110 on the printing belt 130.

[0043] By connecting the first end 1231 of the driving arm 123 at both ends of the driving rod 122, the second end 1232 of the driving arm 123 is connected to the tensioning member 124. At this time, the tensioning member 124, the two driving arms 123 and the driving rod 122 roughly form a triangle. When the first ends 1231 of the two driving arms 123 move toward each other along the driving rod 122, the second ends 1232 extend in the direction away from the driving rod 122, thereby pushing the tensioning member 124 to move, and then pushing the printing belt 130 connected to the tensioning member 124 to tension it. When the first end 1231 moves to the desired position, it can also be fixed by means of screws, threaded structures, etc., so that the tensioning mechanism 110 can achieve the tensioning function.

[0044] It can also be understood that, in some embodiments, a tensioning wheel 121 can be provided in the tensioning member 124, and the printing belt 130 is tensioned by the tensioning wheel 121 abutting against the printing belt 130. Further, the tensioning member 124 can also include a tensioning frame, on which a rotating shaft 128 is provided, and the tensioning wheel 121 is also provided on the tensioning frame, and the rotating shaft 128 is rotatably connected to the frame of the printing device, so that the tensioning wheel 121 can swing up and down and tension the printing belt 130.

[0045] Reference Figure 4In some embodiments, the tensioning mechanism 110 also includes: two first connecting members 125, one end of the first connecting member 125 is sleeved on the driving rod 122 and can move along the driving rod 122, and the other ends of the two first connecting members 125 are respectively connected to the two first ends 1231; two second connecting members 126, the second connecting members 126 are threadedly connected to the driving rod 122, and the two second connecting members 126 are respectively connected to the two first connecting members 125 through springs 127; wherein the thread directions of the two second connecting members 126 connected to the driving rod 122 are opposite, and rotating the driving rod 122 can make the two second connecting members 126 move toward or away from each other, thereby driving the two first connecting members 125 to move toward or away from each other.

[0046] By such arrangement, the tension of the tensioning mechanism 110 can be adjusted by rotating the driving rod 122, which is convenient. In addition, the second connecting member 126 is connected to the first connecting member 125 by the spring 127, and then the first connecting member 125 is pushed to move by elasticity to adjust the tension of the tensioning mechanism 110. By providing the spring 127, the first connecting member 125 is allowed to overcome the elastic force of the spring 127 and move along the driving rod 122 for a certain space, that is, when the belt tensioning wheel 121 contacts the printed object, it is avoided that the tensioning mechanism 110 is too rigid to damage the printing device 100 or the printed object.

[0047] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 In some embodiments, the oil cup steel plate module 200 also includes an oil cup driving structure 240 and a fourth guide rail 230. The fourth guide rail 230 is arranged parallel to the printing steel plate 220. The oil cup driving structure 240 includes: a driving part 243, which is slidably connected to the fourth guide rail 230 and driven by a cylinder to move on the fourth guide rail 230; a pushing part 241, which is connected to the oil cup 210 and is used to drive the oil cup 210 to move on the printing steel plate 220; and a connecting part, whose two ends are respectively connected to the driving part 243 and the pushing part 241.

[0048] Reference Figure 5 and Figure 6 In some embodiments, the pusher 241 is a circular ring, and the oil cup 210 is disposed in the middle of the circular ring and can be driven by the circular ring. The circular ring-shaped pusher 241 is provided to drive the cylindrical oil cup 210 to move. In addition, the circular ring is hollow and can be opened under the oil cup 210 so that the ink can be coated on the printing plate 220.

[0049] After the pattern to be printed is etched on the printing plate 220, the ink cup driving structure 240 is provided to move the ink cup 210, and the dye is evenly applied to the printing plate 220, and the printing device 100 can perform pad printing on it. In the ink cup driving structure 240, the driving part 243 is driven by the cylinder to move on the fourth guide rail 230, and the pushing part 241 can be driven by the driving part 243 through the connecting part, so that the oil cup 210 moves on the printing plate 220.

[0050] Reference Figure 1 In some embodiments, a steel plate placement slot is provided on the machine 500, and the printing steel plate 220 can be detachably placed in the steel plate placement slot. By such a configuration, the printing steel plate 200 can be detachably placed on the steel plate printing machine, and the pattern printed by the steel plate printing machine can be quickly changed by replacing the printing steel plate 200.

[0051] Reference Figure 1 and Figure 7 In some embodiments, the steel plate printing machine also includes a cleaning device 400, which includes: a cleaning frame 450, which is arranged on the machine platform 500; a raw material roller 410, which is arranged on the cleaning frame 450; a cleaning roller 420, which is arranged on the cleaning frame 450; and a recovery roller 430, which is arranged on the cleaning frame 450; wherein the raw material roller 410, the cleaning roller 420, and the recovery roller 430 are connected by a raw material film 440. When the printing belt 130 needs to be cleaned, the printing device 100 is moved to the cleaning device 400, and the printing belt 130 is rotated against the cleaning roller 420, driving the raw material roller 410, the cleaning roller 420, and the recovery roller 430 to rotate, and the raw material film 440 moves from the raw material roller 410 to the cleaning roller 420, so that the raw material film 440 can continuously wipe off the dye on the printing belt 130, and then the printing belt 130 is cleaned, and then the raw material film 440 with the dye is recovered by the recovery roller 430.

[0052] Reference below Figures 1 to 7 , a steel plate printing machine according to an embodiment of the present invention is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description and is not a specific limitation of the invention.

[0053] The steel plate printing machine comprises: a machine platform 500; a convex printing platform 300, which is arranged on the machine platform 500 and is used to carry a printed piece and can move on the machine platform 500; an oil cup steel plate module 200, which is arranged on the machine platform 500 and can move on the machine platform 500; the oil cup steel plate module 200 comprises a printing steel plate 220 and an oil cup 210, the printing steel plate 220 is etched with a pattern to be printed, and the oil cup 210 is used to apply ink to the printing steel plate 220; a pad printing module, which is arranged on the machine platform 500, and the pad printing module comprises a printing device 100 and a first driving device 620 and a second driving device 622, the printing device 100 comprises a printing belt 130 and a printing drive structure 110, and the printing drive structure 1 10 is used to drive the printing belt 130 to reciprocate, the first driving device 620 is used to drive the printing device 100 to move up and down, the second driving device 622 is used to drive the printing device 100 to move along the length direction parallel to the printing steel plate 220, and the printing belt 130 is used to transfer the ink on the printing steel plate 220 to the printed piece on the convex printing table 300; the first transfer mechanism is set on the machine platform 500, and is used to drive the convex printing table 300 to move below the printing device 100, or away from below the printing device 100; the second transfer mechanism is set on the machine platform 500, and is used to drive the oil cup steel plate module 200 to move below the printing device 100, or away from below the printing device 100. The steel plate printing machine also includes a gantry 600 set on the machine platform 500, and the printing device 100, the first driving device 620 and the second driving device 622 are all set on the gantry 600. The steel plate printing machine also includes a first guide rail 510, which is arranged on the machine platform 500 and passes through the bottom of the gantry 600. The convex printing table 300 and the oil cup steel plate module 200 are both slidably connected to the first guide rail 510 and are moved by the first transfer mechanism and the second transfer mechanism respectively. The steel plate printing machine also includes: a second guide rail 610, which is arranged on the gantry 600 and is parallel to the printing steel plate 220; a first driving device 620, which includes a horizontal slide and a first driver, the horizontal slide is slidably connected to the second guide rail, and the first driver is used to drive the horizontal slide to slide along the second guide rail; a third guide rail 621 is arranged on the horizontal slide in the vertical direction; a second driving device 622 includes a lifting frame and a second driver, the lifting frame is slidably connected to the third guide rail 621, and the second driver is used to drive the lifting frame to slide along the third guide rail; the printing device 100 is arranged on the lifting slide.The printing device 100 also includes a tensioning mechanism 110, which includes: a driving rod 122; two driving arms 123, the first ends 1231 of the two driving arms 123 are respectively connected to the driving rod 122, and the first ends 1231 can move along the driving rod 122; a tensioning member 124, the second ends 1232 of the two driving arms 123 are both connected to the tensioning member 124; wherein, when the two first ends 1231 move toward each other, the tensioning member 124 can move in a direction away from the driving rod 122 under the push of the second end 1232, and the tensioning member 124 abuts against the printing belt 130 to tension the printing belt 130. The tensioning mechanism 110 also includes: two first connecting members 125, one end of the first connecting member 125 is sleeved on the driving rod 122 and can move along the driving rod 122, and the other ends of the two first connecting members 125 are respectively connected to the two first ends 1231; two second connecting members 126, the second connecting members 126 are threadedly connected to the driving rod 122, and the two second connecting members 126 are respectively connected to the two first connecting members 125 through springs 127; wherein the thread directions of the two second connecting members 126 connected to the driving rod 122 are opposite, and rotating the driving rod 122 can make the two second connecting members 126 move toward or away from each other, thereby driving the two first connecting members 125 to move toward or away from each other. The oil cup steel plate module 200 also includes an oil cup driving structure 240 and a fourth guide rail 230. The fourth guide rail 230 is arranged in parallel with the printing steel plate 220. The oil cup driving structure 240 includes: a driving part 243, which is slidably connected to the fourth guide rail 230 and driven by a cylinder to move on the fourth guide rail 230; a pushing part 241, which is connected to the oil cup 210 and is used to drive the oil cup 210 to move on the printing steel plate 220; and a connecting part, the two ends of which are respectively connected to the driving part 243 and the pushing part 241. The pushing part 241 is a circular ring piece, and the oil cup 210 is arranged in the middle of the circular ring piece and can be driven by the circular ring piece. A steel plate placement groove is opened on the machine 500, and the printing steel plate 220 can be detachably arranged in the steel plate placement groove. The steel plate printing machine also includes a cleaning device 400, which includes: a cleaning frame 450, which is arranged on the machine platform 500; a raw material roller 410, which is arranged on the cleaning frame 450; a cleaning roller 420, which is arranged on the cleaning frame 450; and a recovery roller 430, which is arranged on the cleaning frame 450; wherein the raw material roller 410, the cleaning roller 420, and the recovery roller 430 are connected by a raw material film 440.

[0054] The steel plate printing machine according to the embodiment of the present invention can achieve at least the following technical effects by such arrangement: the steel plate printing machine of the present invention is provided with a pad printing module, an oil cup steel plate module 200 and a convex printing table 300, and the above components can move relative to each other, and the pad printing operation between the oil cup steel plate module 200 and the convex printing table 300 is realized by the pad printing module. In addition, the printing device 100 includes a printing belt 130 and a printing drive structure 110, and the bottom of the printing belt 130 is brought into contact with the printing steel plate 220 coated with ink by the mutual movement between the printing device 100 and the oil cup steel plate module 200 and the convex printing table 300, and the printing belt 130 is rotated and the printing device 100 is synchronously moved horizontally, so that the pattern on the printing steel plate 220 can be transferred to the printing belt 130. Further, through similar actions, the printing belt 130 with the pattern is moved to the convex printing table 300, and the bottom of the printing belt 130 is brought into contact with the workpiece to be printed, the printing belt 130 is rotated and the printing device 100 is synchronously moved along the contour of the workpiece to be printed, so that the pattern on the printing belt 130 can be transferred to the workpiece to be printed. Through such an arrangement, the pad printing operation of a large area pattern can be realized through the flexible printing belt 100, avoiding the problem of using a large area of ​​rigid printing steel plate 220, which leads to a large space occupation. It can be understood that the printing table can be a convex printing table 300 or a flat printing table, and both can be pad printed by the above method.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the claims and their equivalents.

Claims

1. A steel plate printing press, characterized in that: include: Machine; A convex printing table, arranged on the machine platform, used for carrying the printed workpiece and capable of moving on the machine platform; The oil cup steel plate module is arranged on the machine platform and can move on the machine platform; the oil cup steel plate module includes a printing steel plate and an oil cup, the printing steel plate is etched with a pattern to be printed, and the oil cup is used to apply ink to the printing steel plate; A pad printing module is arranged on the machine platform, the pad printing module includes a printing device and a first driving device and a second driving device, the printing device includes a printing belt and a printing driving structure, the printing driving structure is used to drive the printing belt to reciprocate, the first driving device is used to drive the printing device to move up and down, the second driving device is used to drive the printing device to move in a length direction parallel to the printing steel plate, the printing belt is used to transfer the ink on the printing steel plate to the printed piece on the convex printing table; A first transfer mechanism, disposed on the machine platform, for driving the convex printing platform to move to below the printing device, or away from below the printing device; A second transfer mechanism is provided on the machine platform and is used to drive the oil cup steel plate module to move to the bottom of the printing device or move away from the bottom of the printing device; The printing device also includes a tensioning mechanism, and the tensioning mechanism includes: Actuating rod; Two driving arms, wherein the first ends of the two driving arms are respectively connected to the driving rod, and the first ends are capable of moving along the driving rod; A tensioning member, to which the second ends of the two driving arms are connected; Wherein, when the two first ends move toward each other, the tensioning member can move in a direction away from the driving rod under the push of the second end, and the tensioning member abuts against the printing belt to tension the printing belt; The tensioning mechanism also includes: Two first connecting members, one end of the first connecting member is sleeved on the driving rod and can move along the driving rod, and the other ends of the two first connecting members are respectively connected to the two first ends; Two second connecting members, wherein the second connecting members are threadedly connected to the driving rod, and the two second connecting members are respectively connected to the two first connecting members via springs; The two second connecting members are connected to the driving rod in opposite directions of the threads, and the driving rod can be rotated to move the two second connecting members toward or away from each other, thereby driving the two first connecting members to move toward or away from each other; The oil cup steel plate module also includes an oil cup driving structure and a fourth guide rail, wherein the fourth guide rail is arranged parallel to the printing steel plate, and the oil cup driving structure includes: A driving part, slidably connected to the fourth guide rail, and driven by a cylinder to move on the fourth guide rail; A driving part connected to the oil cup and used for driving the oil cup to move on the printing steel plate; The connecting part has two ends respectively connected to the driving part and the pushing part.

2. The steel plate printing machine according to claim 1, characterized in that: It also includes a gantry arranged on the machine platform, and the printing device, the first driving device and the second driving device are all arranged on the gantry.

3. The steel plate printing machine according to claim 2, characterized in that: It also includes a first guide rail, which is arranged on the machine platform and passes through the bottom of the gantry. The convex printing platform and the oil cup steel plate module are both slidably connected to the first guide rail and are moved by the first transfer mechanism and the second transfer mechanism respectively.

4. The steel plate printing machine according to claim 2, characterized in that: Also includes: A second guide rail is provided on the gantry and is parallel to the printed steel plate; A first driving device includes a horizontal slide and a first driver, wherein the horizontal slide is slidably connected to the second guide rail, and the first driver is used to drive the horizontal slide to slide along the second guide rail; A third guide rail is arranged on the horizontal slide along the vertical direction; The second driving device includes a lifting frame and a second driver, the lifting frame is slidably connected to the third guide rail, and the second driver is used to drive the lifting frame to slide along the third guide rail; The printing device is arranged on the lifting frame.

5. The steel plate printing machine according to claim 1, characterized in that: The pushing part is a circular ring piece, the oil cup is arranged in the middle of the circular ring piece, and can be driven by the circular ring piece.

6. The steel plate printing machine according to claim 1, characterized in that: A steel plate placement groove is provided on the machine platform, and the printing steel plate can be detachably arranged in the steel plate placement groove.

7. The steel plate printing press according to any one of claims 1 to 6, characterized in that: Also included is a cleaning device, the cleaning device comprising: A cleaning rack, arranged on the machine platform; A raw material roller, arranged on the cleaning frame; A cleaning roller, arranged on the cleaning frame; A recycling roller, arranged on the cleaning frame; Wherein, the raw material roller, the cleaning roller and the recycling roller are connected by a raw material film.

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