Automatic gluing device for CNC gravure printing machine

Abstract

The present invention belongs to the technical field of printing machines, and discloses an automatic gluing device for a numerically controlled gravure printing machine, including a printing assembly installed on the printing machine, wherein the printing assembly includes a driving motor and a gravure roller, and also includes: a gluing assembly, which is arranged on the printing machine. By running the driving motor to drive the gravure roller to rotate, the glue will flow out through the glue outlet and contact the gravure roller between the bottom of the gluing groove and the top of the main scraper, and the main scraper will scrape off the glue on the non-image part of the gravure roller. When there are fine particles or glue agglomerates on the glue, since the extension line of the tangent of the gravure roller along the rotation direction coincides with the upper surface of the main scraper, the main scraper will guide the fine particles or glue agglomerates to the top of the main scraper, thereby solving the problem that the fine particles or agglomerated glue in the glue will cause the scraper to deviate or have gaps, resulting in waste of glue.

Description

Technical Field

[0001] The invention belongs to the technical field of printing machines, in particular to an automatic gluing device for a numerically controlled gravure printing machine. Background Art

[0002] The scraper on the gravure printing machine is mainly used for scraping ink (using special rubber when printing textiles). In gravure printing, the surface of the printing plate cylinder is engraved with concave parts of the image and the ink is filled into these concave areas. The scraper is installed close to the printing plate cylinder, and the scraper head is in close contact with the gravure cylinder (such as the attached Fig. 9 ), the ink is between the scraper and the gravure cylinder. When the gravure cylinder rotates, the rubber will fill the image part on the gravure cylinder, thereby scraping off the non-image part of the gravure cylinder, so that the ink of the image part can be accurately transferred to the printed material. However, by setting the scraper in the above way, when fine particles or agglomerated rubber appear in the rubber, the scraper may be offset or notched, and then a large amount of rubber will fall through the notch or the gap between the scraper and the printing cylinder after the offset, thereby causing waste of rubber. Therefore, in order to solve the above problems, an automatic gluing device for a CNC gravure printing machine is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides an automatic gluing device for a CNC gravure printing machine, which solves the problem that fine particles or agglomerated rubber in the rubber may cause the scraper to deviate or have gaps, thereby wasting the rubber.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic gluing device for a CNC gravure printing machine, comprising a printing component installed on the printing machine, the printing component comprising a driving motor and a gravure cylinder, and also comprising: a gluing component, which is arranged on the printing machine.

[0005] The gluing assembly includes a bracket fixedly mounted on the printing machine, a gluing groove located above the gravure roller is fixedly connected to the top of the bracket, the bottom of the gluing groove is in contact with the gravure roller, a main scraper is fixedly connected to the bottom of the bracket, a blade portion of the main scraper is in contact with the gravure roller, an extension line of the tangent of the gravure roller along the rotation direction coincides with the upper surface of the main scraper, a glue outlet is also provided at the bottom of the gluing groove, and a gap is left between the glue outlet and the top of the main scraper.

[0006] A circulation component for circulating the glue on the main scraper is fixedly connected equidistantly to one side of the main scraper away from the blade head, and the length of the glue outlet is smaller than the length of the main scraper.

[0007] Preferably, a material collecting opening and a notch which are interconnected are provided at the top of the main scraper and at one end away from the gravure cylinder, and a concave portion is provided on the upper surface of the main scraper.

[0008] Preferably, an auxiliary scraper is fixedly connected inside the main scraper, one end of the auxiliary scraper extends to the outside of the main scraper and abuts against the gravure cylinder, and the part of the auxiliary scraper located outside the main scraper is elastic.

[0009] A gap is left between the top of the auxiliary scraper and the main scraper, and the gap is communicated with the notch and the material collection port.

[0010] Preferably, the circulation component includes a collection box fixedly connected to one side of the main scraper, the collection box is provided with an input port connected to the collection port, the collection box is movably connected with a piston rod, the top of the piston rod is fixedly connected with a flexible pipe, the top of the flexible pipe is fixedly connected with the top of the gluing groove, the top of the collection box is elastically supported by a group of spring combination rods, the rod body part of the spring combination rod extends downward to the inside of the collection box and is fixedly connected to the piston rod, the top of the rod body part of the spring combination rod is fixedly sleeved with a connecting frame, the spring part of the spring combination rod is fixedly connected to the top of the collection box for supporting the connecting frame, an end frame is fixedly connected to the connecting frame located on a group of circulation components at the end and close to one end of the driving motor, and cams are fixedly connected to both ends of the gravure cylinder, and the cams can squeeze the end frame downward when rotating.

[0011] The connecting frames on an adjacent set of circulation components are fixedly connected.

[0012] Preferably, a filter plate is fixedly connected to the middle of the piston rod; the top of the flexible pipe is an output port, the output port is fixedly connected to the top of the gluing tank, and the top of the flexible pipe is fixedly connected to the gluing tank through the output port.

[0013] The height of the connection point between the output port and the glue application groove is smaller than the diameter of the flexible pipe, and the width of the output port is larger than the diameter of the flexible pipe.

[0014] Preferably, a one-way valve for limiting the one-way delivery of the rubber material to the output port is fixedly connected to the flexible pipe.

[0015] Preferably, a grinding assembly is provided at the bottom of the aggregate box; the grinding assembly includes a base frame movably connected to the bottom of the aggregate box, sleeves are fixedly connected to the base frame at equal distances, a sleeve rod is movably connected inside the sleeve, the top end of the sleeve rod extends above the sleeve and is fixedly connected to a grinding disc; the outer periphery of the sleeve rod is interference fit with the top of the sleeve.

[0016] Preferably, a guide groove is provided on the inner wall of the sleeve, and a convex shaft which can slide in the guide groove is fixedly connected to the bottom end of the sleeve rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The above scheme drives the gravure roller to rotate by running the driving motor. The glue will flow out through the glue outlet and contact the gravure roller between the bottom of the glue tank and the top of the main scraper, thereby filling the recessed image part on this part of the gravure roller. When the gravure roller surface carries the glue and rotates to the top of the main scraper, the main scraper will scrape off the glue on the non-image part of the gravure roller. When there are fine particles or glue lumps on the glue, since the extension line of the tangent of the gravure roller along the rotation direction coincides with the upper surface of the main scraper, the main scraper will guide the fine particles or glue lumps to the top of the main scraper, thereby solving the problem that fine particles or agglomerated rubber in the rubber will cause the scraper to deviate or have gaps, resulting in waste of rubber.

[0019] The above scheme guides the rubber scraped off by the blade head of the main scraper through the upper surface of the main scraper, and enters the collection box through the groove, collection port and input port. At the same time, the rotation of the gravure cylinder will also drive the cam to rotate, and squeeze the end frame to drive the spring combination rod and the piston rod downward. At this time, the fine particles or rubber agglomerates in the rubber inside the collection box will be filtered by the piston rod and the filter plate, and then enter the glue tank through the flexible pipe for circulation.

[0020] The above scheme contacts the top of the grinding disc when the filter plate moves downward. Since the filtered fine particles or rubber agglomerates below the filter plate will remain and adhere to the bottom of the filter plate, the filter plate will move downward to squeeze the grinding disc through the fine particles or rubber agglomerates. When the bottom collection box of the base frame contacts, the base frame and the sleeve will maintain their relative positions unchanged, and the grinding disc will continue to move downward, and drive the cam shaft to move downward along the guide groove, so that the grinding disc will rotate, thereby making it easier to crush the fine particles or rubber agglomerates between the grinding disc and the filter plate, thereby avoiding the situation where the fine particles or rubber agglomerates will be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0023] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0024] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0025] Figure 5 It is a structural schematic diagram of the cam of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the end frame of the present invention;

[0027] Figure 7 It is a partial cross-sectional structural schematic diagram of the aggregate box of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the grinding assembly of the present invention;

[0029] Fig. 9 This is a plan view of the scraper and the magnetic rod.

[0030] In the figure: 1. printing assembly; 11. driving motor; 12. gravure roller; 121. cam; 2. gluing assembly; 21. bracket; 22. gluing groove; 221. glue outlet; 23. main scraper; 231. collecting port; 232. auxiliary scraper; 233. notch; 3. circulation assembly; 31. collecting box; 311. input port; 32. piston rod; 33. filter plate; 34. flexible pipe; 341. output port; 342. one-way valve; 35. connecting frame; 351. end frame; 36. spring combination rod; 4. grinding assembly; 41. base frame; 42. sleeve; 43. sleeve rod; 44. grinding disc; 45. cam shaft; 46. guide groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 9 As shown, the present invention provides an automatic gluing device for a CNC gravure printing machine, including a printing assembly 1 installed on the printing machine, the printing assembly 1 includes a driving motor 11 and a gravure cylinder 12, and also includes: a gluing assembly 2, which is arranged on the printing machine.

[0033] The gluing assembly 2 includes a bracket 21 fixedly mounted on the printing machine, a gluing groove 22 located above the gravure cylinder 12 is fixedly connected to the top of the bracket 21, the bottom of the gluing groove 22 is in contact with the gravure cylinder 12, a main scraper 23 is fixedly connected to the bottom of the bracket 21, the blade head of the main scraper 23 is in contact with the gravure cylinder 12, the extension line of the tangent of the gravure cylinder 12 along the rotation direction coincides with the upper surface of the main scraper 23, a glue outlet 221 is also provided at the bottom of the gluing groove 22, and a gap is left between the glue outlet 221 and the top of the main scraper 23.

[0034] A circulation component 3 for circulating the glue on the main scraper 23 is fixedly connected equidistantly to one side of the main scraper 23 away from the blade head, and the length of the glue outlet 221 is smaller than the length of the main scraper 23 .

[0035] By adopting the above scheme, the gravure roller 12 is driven to rotate by running the driving motor 11, and the glue will flow out through the glue outlet 221 and contact the gravure roller 12 between the bottom of the glue groove 22 and the top of the main scraper 23, so as to fill the recessed image part on this part of the gravure roller 12. When the surface of the gravure roller 12 carries the glue and rotates to the top of the main scraper 23, the main scraper 23 will scrape off the glue on the non-image part of the gravure roller 12. When there are fine particles or glue lumps on the glue, since the extension line of the tangent of the gravure roller 12 along the rotation direction coincides with the upper surface of the main scraper 23, the main scraper 23 will guide the fine particles or glue lumps to the top of the main scraper 23, thereby solving the problem that fine particles or agglomerated glue in the glue will cause the scraper to deviate or have gaps, thereby wasting glue.

[0036] like Figure 2-Figure 5 As shown, an auxiliary scraper 232 is fixedly connected inside the main scraper 23, one end of the auxiliary scraper 232 extends to the outside of the main scraper 23 and abuts against the gravure cylinder 12, and the part of the auxiliary scraper 232 located outside the main scraper 23 is elastic.

[0037] A gap is left between the top of the auxiliary scraper 232 and the main scraper 23 , and the gap is connected to the notch 233 and the material collection port 231 .

[0038] A material collecting opening 231 and a notch 233 which are connected to each other are formed at the top of the main scraper 23 and at one end away from the gravure cylinder 12 , and a concave portion is formed on the upper surface of the main scraper 23 .

[0039] By adopting the above scheme and through the design of the auxiliary scraper 232, when the main scraper 23 fails to completely scrape off the non-image part on the gravure cylinder 12, the auxiliary scraper 232 can scrape it again, and the scraped rubber can enter the main scraper 23 along the upper surface of the auxiliary scraper 232.

[0040] It is worth noting that the auxiliary scraper 232 is elastic at the portion outside the main scraper 23 , so that it can better fit with the outer periphery of the gravure cylinder 12 .

[0041] like Figure 1-Figure 7As shown, the circulation component 3 includes a collection box 31 fixedly connected to one side of the main scraper 23, the collection box 31 is provided with an input port 311 connected to the collection port 231, a piston rod 32 is movably connected inside the collection box 31, a flexible pipe 34 is fixedly connected to the top of the piston rod 32, the top of the flexible pipe 34 is fixedly connected to the top of the gluing groove 22, a group of spring combination rods 36 are elastically supported on the top of the collection box 31, the rod body portion of the spring combination rod 36 extends downward to the inside of the collection box 31 and is fixedly connected to the piston rod 32, a connecting frame 35 is fixedly sleeved on the top of the rod body portion of the spring combination rod 36, the spring portion of the spring combination rod 36 is fixedly connected to the top of the collection box 31 for supporting the connecting frame 35, an end frame 351 is fixedly connected to the connecting frame 35 located on a group of circulation components 3 at the end and close to one end of the driving motor 11, and cams 121 are fixedly connected to both ends of the gravure cylinder 12, and the cam 121 can squeeze the end frame 351 downward when it rotates.

[0042] The connecting frames 35 on an adjacent group of circulation components 3 are fixedly connected; a filter plate 33 is fixedly connected to the middle of the piston rod 32; the top of the flexible pipe 34 is an output port 341, and the output port 341 is fixedly connected to the top of the glue tank 22, and the top of the flexible pipe 34 is fixedly connected to the glue tank 22 through the output port 341.

[0043] The height of the connection point between the output port 341 and the glue groove 22 is smaller than the diameter of the flexible pipe 34 , and the width of the output port 341 is larger than the diameter of the flexible pipe 34 ; a one-way valve 342 is fixed to the flexible pipe 34 for limiting the one-way delivery of glue to the output port 341 .

[0044] By adopting the above scheme, the rubber scraped off by the blade head of the main scraper 23 is guided through the upper surface of the main scraper 23, and enters the collecting box 31 through the slot 233, the collecting port 231 and the input port 311. At the same time, the rotation of the gravure cylinder 12 will also drive the cam 121 to rotate, and squeeze the end frame 351 to drive the spring combination rod 36 and the piston rod 32 downward. At this time, the fine particles or rubber agglomerates in the rubber inside the collecting box 31 will be filtered by the filter plate 33 through the piston rod 32, and then enter the glue tank 22 through the flexible pipe 34 for circulation.

[0045] like Figure 4 , Figure 7 and Figure 8 As shown, a grinding assembly 4 is provided at the bottom of the aggregate box 31; the grinding assembly 4 includes a base frame 41 movably connected to the bottom of the aggregate box 31, sleeves 42 are fixedly connected to the base frame 41 at equal intervals, a sleeve rod 43 is movably connected inside the sleeve 42, and the top end of the sleeve rod 43 extends to the top of the sleeve 42 and is fixedly connected to a grinding disc 44.

[0046] The outer periphery of the sleeve rod 43 is interference fit with the top of the sleeve 42 ; a guide groove 46 is provided on the inner wall of the sleeve 42 , and a convex shaft 45 which can slide in the guide groove 46 is fixedly connected to the bottom end of the sleeve rod 43 .

[0047] By adopting the above scheme, when the filter plate 33 moves downward, it contacts the top of the grinding disc 44. Since the filtered fine particles or rubber agglomerates below the filter plate 33 will remain and adhere to the bottom of the filter plate 33, the filter plate 33 will move downward to squeeze the grinding disc 44 through the fine particles or rubber agglomerates. When the bottom collection box 31 of the base frame 41 contacts, the base frame 41 and the sleeve 42 will maintain their relative positions unchanged, and the grinding disc 44 will continue to move downward, and drive the cam 45 to move downward along the guide groove 46, so that the grinding disc 44 will also rotate, thereby making it easier to crush the fine particles or rubber agglomerates between the grinding disc 44 and the filter plate 33, thereby avoiding the situation where the fine particles or rubber agglomerates are also recycled.

[0048] The working principle and use process of the present invention:

[0049] First, run the drive motor 11 to drive the gravure roller 12 to rotate, and at the same time, the glue will flow out through the glue outlet 221 and contact the gravure roller 12 between the bottom of the glue groove 22 and the top of the main scraper 23, so as to fill the concave image part on this part of the gravure roller 12. When the surface of the gravure roller 12 carries the glue and rotates to the top of the main scraper 23, the main scraper 23 will scrape off the glue on the non-image part of the gravure roller 12. When there are fine particles or glue lumps on the glue, since the extension line of the tangent of the gravure roller 12 along the rotation direction coincides with the upper surface of the main scraper 23, the main scraper 23 will guide the fine particles or glue lumps to the top of the main scraper 23.

[0050] Subsequently, the excess rubber scraped off will be guided by the upper surface of the main scraper 23, and enter the collecting box 31 through the slot 233, the collecting port 231 and the input port 311. At the same time, the rotation of the gravure cylinder 12 will also drive the cam 121 to rotate, and squeeze the end frame 351 to drive the spring combination rod 36 and the piston rod 32 downward. At this time, the fine particles or rubber agglomerates in the rubber inside the collecting box 31 will be filtered by the filter plate 33 through the piston rod 32, and then enter the glue tank 22 through the flexible pipe 34 for circulation.

[0051] When the filter plate 33 moves downward, it will also contact the top of the grinding disc 44. Since the filtered fine particles or rubber agglomerates below the filter plate 33 will remain and adhere to the bottom of the filter plate 33, the downward movement of the filter plate 33 will squeeze the grinding disc 44 through the fine particles or rubber agglomerates. When the bottom collection box 31 of the base frame 41 contacts, the base frame 41 and the sleeve 42 will maintain their relative positions unchanged, and the grinding disc 44 will continue to move downward, and drive the cam 45 to move downward along the guide groove 46, so that the grinding disc 44 will also rotate, thereby making it easier to crush the fine particles or rubber agglomerates between the grinding disc 44 and the filter plate 33.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic gluing device for a numerically controlled gravure printing machine, comprising a printing assembly (1) mounted on the printing machine, the printing assembly (1) comprising a driving motor (11) and a gravure cylinder (12), characterized in that: Also includes: A gluing component (2) is arranged on the printing machine; The gluing component (2) comprises a bracket (21) fixedly mounted on the printing machine, the top end of the bracket (21) being fixedly connected to a gluing groove (22) located above the gravure roller (12), the bottom end of the gluing groove (22) being in contact with the gravure roller (12), the bottom end of the bracket (21) being fixedly connected to a main scraper (23), the blade head portion of the main scraper (23) being in contact with the gravure roller (12), the extension line of the tangent line of the gravure roller (12) along the rotation direction coincides with the upper surface of the main scraper (23), the bottom end of the gluing groove (22) being further provided with a glue outlet (221), a gap being left between the glue outlet (221) and the top end of the main scraper (23); A circulation component (3) for circulating the glue on the main scraper (23) is fixedly connected equidistantly to a side of the main scraper (23) away from the blade head, and the length of the glue outlet (221) is smaller than the length of the main scraper (23); The circulation assembly (3) comprises a material collecting box (31) fixedly connected to one side of the main scraper (23); the material collecting box (31) is provided with an input port (311) connected to the material collecting port (231); a piston rod (32) is movably connected inside the material collecting box (31); a flexible pipe (34) is fixedly connected to the top of the piston rod (32); the top of the flexible pipe (34) is fixedly connected to the top of the glue applying groove (22); a group of spring combination rods (36) are elastically supported on the top of the material collecting box (31); the rod body of the spring combination rod (36) extends downward To the inside of the material collecting box (31) and fixedly connected to the piston rod (32), the top fixed sleeve of the rod body part of the spring combination rod (36) is provided with a connecting frame (35), the spring part of the spring combination rod (36) is fixedly connected to the top of the material collecting box (31) for supporting the connecting frame (35), the connecting frame (35) located on a group of circulation components (3) at the end and close to one end of the driving motor (11) is fixedly connected with an end frame (351), and the two ends of the gravure cylinder (12) are fixedly connected with cams (121), and the cams (121) can squeeze the end frame (351) downward when rotating; The connecting frames (35) on the adjacent groups of circulation components (3) are fixedly connected; the middle part of the piston rod (32) is fixedly connected with a filter plate (33); The top end of the flexible pipe (34) is an output port (341), and the output port (341) is fixedly connected to the top end of the glue application groove (22). The top end of the flexible pipe (34) is fixedly connected to the glue application groove (22) via the output port (341); The height of the connection point between the output port (341) and the glue application groove (22) is smaller than the diameter of the flexible pipe (34), and the width of the output port (341) is larger than the diameter of the flexible pipe (34); A grinding assembly (4) is provided at the bottom of the material collecting box (31); the grinding assembly (4) comprises a base frame (41) movably connected to the bottom of the material collecting box (31); sleeves (42) are fixedly connected to the base frame (41) at equal intervals; a sleeve rod (43) is movably connected inside the sleeve (42); the top end of the sleeve rod (43) extends to the top of the sleeve (42) and is fixedly connected to a grinding disc (44); The outer periphery of the sleeve rod (43) is interference fit with the top of the sleeve (42); a guide groove (46) is provided on the inner wall of the sleeve (42); and a convex shaft (45) capable of sliding in the guide groove (46) is fixedly connected to the bottom end of the sleeve rod (43).

2. The automatic gluing device for a CNC gravure printing machine according to claim 1, characterized in that: A material collecting opening (231) and a notch (233) which are connected to each other are provided at the top of the main scraper (23) and at one end away from the gravure cylinder (12), and a concave portion is provided on the upper surface of the main scraper (23).

3. The automatic gluing device for a CNC gravure printing machine according to claim 2, characterized in that: An auxiliary scraper (232) is fixedly connected inside the main scraper (23), one end of the auxiliary scraper (232) extends to the outside of the main scraper (23) and abuts against the gravure roller (12), and the portion of the auxiliary scraper (232) located outside the main scraper (23) is elastic; A gap is left between the top end of the auxiliary scraper (232) and the main scraper (23), and the gap is connected to the notch (233) and the material collection port (231).

4. The automatic gluing device for a numerically controlled gravure printing machine according to claim 3, characterized in that: A one-way valve (342) is fixedly connected to the flexible pipe (34) and is used to limit the one-way delivery of the rubber material to the output port (341).

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