Number roller mechanism with air suction function

Abstract

The invention discloses a numbering roller mechanism with an air suction function, which comprises a hollow shaft, the side wall of the hollow shaft is provided with a plurality of air holes penetrating through the inner cavity of the hollow shaft, a roller body is rotatably connected to the outer side wall of the hollow shaft, the outer side wall of the roller body is provided with an air suction negative pressure area, the air suction negative pressure area is provided with a plurality of through holes, and the air suction negative pressure area is provided with a plurality of through holes. A plurality of partition plates are arranged on the air suction negative pressure area at intervals; the numbering head assemblies are fixedly connected to the air suction negative pressure area of the roller body, and the numbering head assemblies are arranged between every two adjacent partition plates. The fan cover assemblies are arranged on the partition plates, every two adjacent partition plates are matched with the corresponding inner circumferential side roller body and the corresponding outer circumferential side fan cover layer to form a cavity, the number head assemblies are located in the cavities, number head penetrating holes for number head imprinting are formed in the fan cover assemblies, and the through holes communicate with the corresponding cavities. The through holes and the air holes are in butt joint to form air suction channels to suck air in the corresponding cavities, and negative pressure is formed on the outer sides of the cavities to adsorb printed products.

Description

Technical Field

[0001] The invention belongs to the technical field of the number cylinder of an inking machine, and particularly relates to a number cylinder mechanism with an air suction function. Background Art

[0002] Adsorbing the printed paper on the surface of the number cylinder can form some new anti-counterfeiting printing processes. However, the existing number cylinders cannot adsorb the printed matter during the inking process. In addition, during the printing process, the instability of the printed matter on the surface of the number cylinder will also affect the quality of the printed matter. Therefore, how to provide a number cylinder mechanism with a vacuum adsorption function that can improve the quality of the printed matter and ensure the stability during the inking process of the printed matter is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0003] In view of this, the invention provides a number cylinder mechanism with an air suction function to ensure the stability during the inking process of the printed matter and the quality of the inking of the printed matter.

[0004] To achieve the above object, the invention adopts the following technical scheme: A number cylinder mechanism with an air suction function, which comprises:

[0005] A hollow shaft, on the side wall of which there are a plurality of air holes penetrating its internal cavity, and both ends of the hollow shaft can be connected to an external air extraction device;

[0006] A cylinder body rotatably connected to the outer side wall of the hollow shaft, on the outer side wall of which there is a suction negative pressure area corresponding to the circumferential direction, on which there are a plurality of through holes, and a plurality of partition plates are arranged at intervals in the circumferential direction of the cylinder body corresponding to the suction negative pressure area;

[0007] A number head assembly fixedly connected to the suction negative pressure area of the cylinder body, and the number head assemblies are arranged between adjacent two partition plates;

[0008] An air hood assembly arranged on the partition plates, and adjacent two partition plates cooperate with the corresponding inner circumferential side cylinder body and the outer circumferential side air hood layer to form a chamber, the number head assembly is located in the chamber, the air hood assembly is provided with number head perforations, the through holes are communicated with the corresponding chambers, and during the rotation of the cylinder body, the through holes are docked with the air holes to form an air extraction passage to suck the air in the corresponding chambers, and a negative pressure is formed outside the chamber to adsorb the printed matter.

[0009] The beneficial effects of the present invention are as follows: The drum body rotates on the hollow shaft. A chamber formed by a partition plate and a wind hood assembly is provided on the outer side wall of the drum body. By utilizing the communication relationship among the air holes on the hollow shaft, the through holes on the drum body, and the chamber, the air in the chamber is sucked under the action of an external air extraction device, so that a negative pressure is formed on the outer wall of the chamber and used to adsorb the printed matter. There is a numbering head assembly in the chamber. The numbering head assembly can pass through the numbering head perforation to contact the printed matter to complete numbering. The rotation of the drum body makes the through hole communicate with the air hole, and a negative pressure is generated in the chamber of the air suction negative pressure area, while there is no air suction function in the part outside the air suction negative pressure area, which can improve the stability of the printed matter handover process. At the same time, with the help of the negative pressure adsorption function, during the process of driving the printed matter for numbering, the printed matter is stably and reliably attached to the wind hood assembly under the negative pressure suction force, reducing the phenomenon of the printed matter shaking and floating due to external disturbances during this process.

[0010] Preferably, there are multiple chambers, and each chamber is communicated with multiple through holes.

[0011] Preferably, the partition plate extends to the axial two ends' edges of the drum body, and a closed frame is provided at the end of the drum body corresponding to the partition plate.

[0012] Preferably, the wind hood assembly includes multiple arc-shaped wind hood pieces. The two ends of the wind hood piece are fixedly connected to the closed frame, and the wind hood piece is located on the outer peripheral side of the partition plate.

[0013] Preferably, rectangular teeth are provided on both side ends of the wind hood piece, and the rectangular teeth between adjacent two wind hood pieces are connected in an interleaved manner.

[0014] Preferably, multiple suction holes are provided on both sides of the wind hood piece corresponding to the numbering head perforation.

[0015] Preferably, the numbering head assembly includes a numbering head mounting seat, a sealing strip, and a numbering head. The numbering head mounting seat is fixedly located on the outer side wall of the drum body, and there is a numbering head mounting seat in each chamber. An air passing gap is reserved between the numbering head mounting seat and the outer side wall of the drum body, and the air passing gap is communicated with the through hole. Sealing strips for sealing connection with the drum body are provided on both sides of the numbering head mounting seat, and air passing holes communicating with the air passing gap are provided on the numbering head mounting seat.

[0016] Preferably, there are multiple groups of numbering heads and they are arranged side by side and at intervals on the numbering head mounting seat. The numbering head passes through the numbering head perforation on the wind hood piece to contact the printed matter.

[0017] Preferably, grippers for transferring the printed matter are arranged on one side end of the outer side wall of the drum body corresponding to the air suction negative pressure area. Description of the Drawings

[0018] Figure 1Installation schematic diagram of a number drum mechanism with an air suction function according to the present invention;

[0019] Figure 2 Cross-sectional schematic diagram of a number drum mechanism with an air suction function according to the present invention;

[0020] Figure 3 Enlarged schematic diagram of the chamber of a number drum mechanism with an air suction function according to the present invention;

[0021] Figure 4 Schematic diagram of the drum body of a number drum mechanism with an air suction function according to the present invention;

[0022] Figure 5 Schematic diagram of the air hood piece of a number drum mechanism with an air suction function according to the present invention.

[0023] 1 Hollow shaft, 2 Air holes, 3 Drum body, 4 Air suction negative pressure area, 5 Through holes, 6 Partition plates, 7 Number head assembly, 701 Number head mounting seat, 7011 Air passing holes, 702 Sealing strips, 703 Number heads, 704 Air passing gaps, 8 Air hood assembly, 801 Air hood pieces, 802 Number head perforations, 803 Suction holes, 804 Rectangular teeth, 9 Chamber, 10 Gripper jaws. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Refer to the appendix of the present invention Figures 1 to 5 , A number drum mechanism with an air suction function according to an embodiment of the present invention includes:

[0026] A hollow shaft 1, on the side wall of the hollow shaft 1 are provided a plurality of air holes 2 that penetrate its internal cavity, and both ends of the hollow shaft 1 can be connected to an external air extraction device to extract air by means of the external air extraction device;

[0027] A drum body 3, the drum body 3 is rotatably connected to the outer side wall of the hollow shaft 1, on the outer side wall of the drum body 3 is provided an air suction negative pressure area 4 corresponding to the circumferential direction, the part outside the air suction negative pressure area does not suck air, on the air suction negative pressure area 4 are provided a plurality of through holes 5, and a plurality of partition plates 6 are arranged at intervals in the circumferential direction of the drum body 3 corresponding to the air suction negative pressure area 4;

[0028] A number head assembly 7, the number head assembly 7 is fixedly connected to the air suction negative pressure area 4 of the drum body 3, and the number head assembly 7 is arranged between every two adjacent partition plates 6;

[0029] The air hood assembly 8 is arranged on the partition plate 6. Adjacent two partition plates 6 cooperate with the corresponding inner circumferential side drum body and the outer circumferential side air hood layer to form a chamber 9. The coder assembly 7 is located inside the chamber 9. The air hood assembly 8 is provided with a coder perforation 802 for coder printing. The through hole 5 communicates with the corresponding chamber 9. During the rotation of the drum body 3, the through hole 5 can be docked with the air hole 2 to form an air extraction passage to extract the air in the corresponding chamber, and a negative pressure is formed outside the chamber 9 to adsorb the printed matter, so that the printed matter is adsorbed onto the air hood assembly, ensuring the stable state of the printed matter during the coder printing process.

[0030] In some other embodiments, there are multiple chambers 9, and each chamber 9 is communicated with multiple through holes 5. The chambers are circumferentially distributed on the outer side of the drum body.

[0031] In some other specific embodiments, the partition plate 6 extends to the axial two ends' edges of the drum body 3. The corresponding end of the drum body 3 is provided with a closure frame to ensure the sealing effect of the chamber, and a negative pressure state on the surface of the chamber is realized under the suction of the suction device to complete the adsorption of the printed matter.

[0032] In some other specific embodiments, the air hood assembly 8 includes a plurality of arc-shaped air hood pieces 801. The two ends of the air hood piece 801 are fixedly connected to the closure frame. The air hood piece 801 is located on the outer circumferential side of the partition plate 6, and the air hood piece matches the contour shape of the drum body.

[0033] In some other embodiments, rectangular teeth 804 are provided on both side ends of the air hood piece 801, and the rectangular teeth 804 between adjacent two air hood pieces 801 are staggeredly connected to enhance the continuity and stability of the annular air hood.

[0034] In some other embodiments, a plurality of suction holes 803 are provided on both sides of the air hood piece 801 corresponding to the coder perforation 802. The suction holes cooperate to adsorb the printed matter to enhance the stability of the printed matter on the air hood.

[0035] In some other specific embodiments, the coder assembly 7 includes a coder mounting seat 701, a sealing strip 702 and a coder 703. The coder mounting seat 701 is fixedly located on the outer side wall of the drum body 3. There is a coder mounting seat 701 in each chamber 9. An air passing gap 704 is reserved between the coder mounting seat 701 and the outer side wall of the drum body 3. The air passing gap is about 1 mm to facilitate the gas flow. The air passing gap 704 communicates with the through hole 5. Sealing strips 702 for sealing connection with the drum body are provided on both sides of the coder mounting seat 701. The coder mounting seat 701 is provided with an air passing hole 7011 communicating with the air passing gap. By using a suction device to extract the air in the hollow shaft, when the air hole, the through hole, the air passing gap and the air passing hole are communicated, the gas in the chamber is extracted, and a negative pressure environment is formed on the outer surface (air hood) of the chamber, and the printed matter is adsorbed on the air hood.

[0036] In some other embodiments, there are multiple groups of the number heads 703, which are arranged side by side at intervals on the number head mounting base 701. The number heads 703 pass through the number head perforations 802 on the air hood pieces 801 to contact the printed matter. A row of number heads in the axial direction is divided into a group, and multiple groups of number heads are evenly arranged in the circumferential direction of the drum body.

[0037] In some other embodiments, grippers 10 for transferring the printed matter are arranged on the outer sidewall of the drum body 3 and at one end corresponding to the air suction negative pressure area. After the grippers complete the transfer of the printed matter, they drive the paper or the printed matter to move forward with the rotation of the drum body.

[0038] The number drum with air suction provided by the present invention divides the circumferential range of the drum body into two areas with air suction function and without air suction function by means of the annular air hood assembly, ensuring the smooth transfer process of the printed matter. The transfer process of the printed matter corresponds to the area without air suction, improving the stability of the transfer process. At the same time, with the help of the negative pressure adsorption function, during the process of driving the printed matter for numbering, due to the negative pressure suction force, the printed matter is stably and reliably attached to the outer side of the air hood assembly, reducing the phenomena of jitter and drift of the printed matter caused by external disturbances during this process.

[0039] For the devices and usage methods disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For related parts, refer to the description in the method part.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A number drum mechanism with a suction function, characterized in that, Comprising: A hollow shaft (1), on the side wall of the hollow shaft (1), there are a plurality of air holes (2) penetrating through its inner cavity, and both ends of the hollow shaft (1) can be connected to an external air extraction device; A drum body (3), the drum body (3) is rotatably connected to the outer side wall of the hollow shaft (1), on the outer side wall of the drum body (3), there is a suction negative pressure area (4) arranged corresponding to the circumferential direction, on the suction negative pressure area (4), there are a plurality of through holes (5), and a plurality of partition plates (6) are arranged at intervals in the circumferential direction of the drum body (3) corresponding to the suction negative pressure area (4); A nozzle assembly (7), the nozzle assembly (7) is fixedly connected to the suction negative pressure area (4) of the drum body (3), and a nozzle assembly (7) is arranged between adjacent two partition plates (6); A hood assembly (8), the hood assembly (8) is arranged on the partition plate (6), the adjacent two partition plates (6) cooperate with the corresponding inner circumferential side drum body and the outer circumferential side hood layer to form a chamber (9), the nozzle assembly (7) is located in the chamber (9), the hood assembly (8) is provided with a nozzle through hole (802), the through hole (5) is communicated with the corresponding chamber (9), during the rotation of the drum body (3), the through hole (5) is docked with the air hole (2) to form an air extraction passage to suck the air in the corresponding chamber, and a negative pressure is formed outside the chamber (9) to adsorb the printed matter.

2. The number drum mechanism with a suction function according to claim 1, characterized in that, There are a plurality of the chambers (9), and each chamber (9) is communicated with a plurality of the through holes (5).

3. The number drum mechanism with a suction function according to claim 2, characterized in that, The partition plate (6) extends to the axial two ends edges of the drum body (3), and the drum body (3) is provided with a closing frame corresponding to the end of the partition plate.

4. A number drum mechanism with a suction function according to claim 3, characterized in that, The hood assembly (8) includes a plurality of arc-shaped hood pieces (801), both ends of the hood piece (801) are fixedly connected to the closing frame, and the hood piece (801) is located on the outer circumferential side of the partition plate (6).

5. A number drum mechanism with a suction function according to claim 4, characterized in that, Both side ends of the hood piece (801) are provided with rectangular teeth (804), and the rectangular teeth (804) between adjacent two hood pieces (801) are connected in an interleaved manner.

6. The number drum mechanism with a suction function according to claim 5, characterized in that, On the hood piece (801), a plurality of suction holes (803) are provided on both sides corresponding to the nozzle through hole (802).

7. A number drum mechanism with a suction function according to claim 1, characterized in that, The nozzle assembly (7) includes a nozzle mounting seat (701), a sealing strip (702) and a nozzle (703), the nozzle mounting seat (701) is fixedly located on the outer side wall of the drum body (3), there is a nozzle mounting seat (701) in each chamber (9), a gas passing gap (704) is reserved between the nozzle mounting seat (701) and the outer side wall of the drum body (3), the gas passing gap (704) is communicated with the through hole (5), sealing strips (702) for sealing connection with the drum body are provided on both sides of the nozzle mounting seat (701), and a through hole (7011) for communicating the gas passing gap is provided on the nozzle mounting seat (701).

8. A number drum mechanism with a suction function according to claim 7, characterized in that, There are multiple groups of the nozzles (703) and they are arranged side by side at intervals on the nozzle mounting seat (701), and the nozzles (703) pass through the nozzle through holes (802) on the hood piece (801) to contact the printed matter.

9. The number drum mechanism with a suction function according to any one of claims 1-8, characterized in that, On the outer side wall of the drum body (3) and at one side end corresponding to the air suction negative pressure area, grippers (10) for transferring printed products are arranged.

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