A self-cleaning device and method for tipping paper printing

Abstract

The present invention discloses a self-cleaning device and method for tipping paper printing, and relates to the technical field of tipping paper processing and manufacturing. In the present invention: a cleaning scraper mechanism is arranged at the downstream position where the printing roller contacts the base paper for printing. The first push plate is embedded with a pressure sensing module in contact with one end of the spring, and the side end plate of the horizontal fixed cylinder is provided with a first distance sensing module facing the second push plate, and one side of the horizontal fixed cylinder is provided with a servo propulsion device for pushing the first push plate. The mounting base is provided with a multi-way pipe connected to the air source equipment, a scraper head in contact with the surface of the printing roller, and a detection bracket located on the upper side of the mounting base, and the scraper head is provided with a scraper slope and a plurality of suction holes. The detection bracket is provided with a plurality of second distance sensing modules facing the material accumulation area. The present invention not only ensures that the scraper head scrapes away the residual raw materials squeezed on the printing roller, but also facilitates the subsequent re-attachment and covering of the "new" printing raw materials on the surface of the printing roller.

Description

Technical Field

[0001] The invention relates to the technical field of tipping paper processing and manufacturing, and in particular to a tipping paper printing self-cleaning device and method. Background Art

[0002] When printing tipping paper, the base paper roll is first delivered to the printing roller through the guide roller. The printing roller rotates in the printing material, and the scraper scrapes off the excess paint on the printing roller. A certain pressure should be applied between the printing roller and the pressure roller so that the base paper passes evenly and smoothly between the two, and the paint on the printing roller is quickly transferred to the paper surface. However, a small amount of printing material will still remain on the printing roller after being squeezed and contacted with the base paper, and the squeezed printing material is tightly attached to the surface of the printing roller. After passing through the material pool and the scraper again, these small amounts of "secondary" materials occupy the printing area that should have been the "new" material. When they come into contact with the base paper again, the printing quality of the base paper at that place may be reduced. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a self-cleaning device and method for tipping paper printing, which not only ensures that the scraper head scrapes away the extruded residual raw material on the printing roller, facilitating the subsequent re-attachment and covering of the "new" printing raw material on the surface of the printing roller, but also reduces unnecessary excessive damage to the surface of the printing roller by the scraper head.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention provides a self-cleaning device for printing on tipping paper, wherein printing raw materials are contained in a raw material pool, the bottom of a printing roller is located in the printing raw materials in the raw material pool, a continuously advancing base paper and a rolling pressure roller are arranged above the printing roller, a forward printing scraper is arranged at an upstream position where the printing roller contacts the base paper for printing, a cleaning scraper mechanism is arranged at a downstream position where the printing roller contacts the base paper for printing, a stirring mechanism is arranged in the raw material pool and is located directly below the cleaning scraper mechanism, the cleaning scraper mechanism comprises a horizontal fixed cylinder, the horizontal fixed cylinder is provided with a horizontal detection module, the interior of the horizontal fixed cylinder is a cylinder cavity, a first push plate, a second push plate and a spring located between the first push plate and the second push plate are arranged in the cylinder cavity, the first push plate is embedded with a pressure sensing module contacting one end of the spring, a side end plate of the horizontal fixed cylinder is provided with a first distance sensing module directly facing the second push plate, a servo propulsion device for pushing the first push plate is arranged on one side of the horizontal fixed cylinder, and a mounting base frame that moves synchronously with the second push plate is arranged on the other side of the horizontal fixed cylinder. The mounting base is configured with a multi-way pipe fitting connected to the air source equipment, a scraper head in contact with the surface of the printing roller, and a detection bracket located on the upper side of the mounting base. The scraper head is provided with a scraper slope and a plurality of suction holes. A material accumulation area is formed between the scraper slope and the surface of the printing roller. The multi-way pipe fitting is connected with a plurality of negative pressure pipes, which are connected to the suction holes of the scraper head. The detection bracket is configured with a plurality of second distance sensor modules facing the material accumulation area.

[0006] As a preferred technical solution of the printing self-cleaning device in the present invention: a first propulsion rod connected to the servo propulsion device is movably installed at one side of the cylinder cavity of the horizontal fixed cylinder, and the first push plate is fixedly connected to the inner side end of the first propulsion rod extending into the cylinder cavity. A second propulsion rod is movably installed at the other side of the cylinder cavity of the horizontal fixed cylinder, the outer side end of the second propulsion rod is fixedly connected to the mounting base, and the second push plate is fixedly connected to the inner side end of the second propulsion rod extending into the cylinder cavity.

[0007] As a preferred technical solution of the printing self-cleaning device in the present invention: a return groove connected to the suction hole is opened on the scraping inclined surface of the scraper head, and a return pipe is connected to the lower side of the scraper head, and the return pipe is connected to the suction hole of the scraper head.

[0008] As a preferred technical solution of the printing self-cleaning device in the present invention: a material blocking inner inclined plate is fixedly provided at the connection position between the negative pressure tube and the suction hole of the scraper head, and a gap is left between the material blocking inner inclined plate and the upper wall of the suction hole.

[0009] As a preferred technical solution of the printing self-cleaning device in the present invention: the sensing direction of the second distance sensing module is exactly opposite to the position where the scraper head contacts the surface of the printing roller.

[0010] As a preferred technical solution of the printing self-cleaning device in the present invention: the number of the second distance sensor modules is the same as the material suction holes, and the distribution positions of the second distance sensor modules and the material suction holes correspond to each other.

[0011] As a preferred technical solution of the printing self-cleaning device in the present invention: The stirring mechanism includes a motor installed on the bottom side of the raw material tank and stirring blades located in the raw material tank. The stirring blades are installed on the output rotating shaft of the motor.

[0012] The present invention provides a method for printing and self-cleaning tipping paper, including the following steps:

[0013] (I) Debugging and installation of the cleaning and scraping mechanism: ① Through the horizontal detection module, the horizontal installation and fixation of the horizontal fixing cylinder are completed. ② The servo propulsion device drives the first push plate to linearly move, and the pressure sensing module real-time detects the pressure of the spring on the pressure sensing module. ③ After the pressure sensing module senses and detects that the pressure value first linearly increases and then remains in a constant value state for a certain period of time, and then the pressure sensing module senses and detects that the pressure value linearly increases again, through the corresponding matching relationship of the system time domain parameters, determine the distance parameter sensed and detected by the first distance sensing module when the pressure parameter sensed and detected by the pressure sensing module starts to increase from the constant value. This distance parameter is denoted as L. ④ Adjust the position of the first push plate through the servo propulsion device to adjust the distance between the second push plate and the first distance sensing module to L.

[0014] (II) Scraping and cleaning of the cleaning and scraping mechanism: ① The scraping knife head contacts and scrapes the surface position of the printing roller after printing the base paper, and the second distance sensing module senses and detects the depth of the accumulated material in the accumulated material area. Let the real-time accumulated material depth be Hx. ② The system presets the maximum accumulated material depth Hmax. When the real-time accumulated material depth is lower than the maximum accumulated material depth preset by the system, that is, Hx < Hmax, the accumulated material in the accumulated material area flows back downward through the material suction holes. ③ When the real-time accumulated material depth sensed and detected by any one of the second distance sensing modules on the detection bracket is not lower than the maximum accumulated material depth preset by the system, that is, Hx >= Hmax, start the air source device connected to the multi-way pipe fitting, and perform negative pressure suction on the material suction holes through the negative pressure pipe to increase the suction intensity of the material suction holes for the accumulated material in the accumulated material area until the real-time accumulated material depth is lower than the maximum accumulated material depth preset by the system, and then stop the negative pressure action.

[0015] Compared with the existing technology, the beneficial effects of the present invention are:

[0016] 1. Through the debugging and installation of the horizontal fixing cylinder and the installation base frame, the scraping knife head is in good contact with the surface of the printing roller, and the scraping knife head will not cause excessive extrusion to the surface of the printing roller. This not only ensures the scraping of the residual raw materials extruded on the printing roller by the scraping knife head, facilitating the reattachment and coverage of the "new" printing raw materials on the surface of the printing roller, but also reduces the unnecessary excessive damage to the surface of the printing roller by the scraping knife head.

[0017] 2. When there is too much material accumulation in the material accumulation area between the scraper head and the surface of the printing roller, the present invention discharges the excess printing material scraped from the material accumulation area through the suction hole, the return pipe, the sensor detection of the second distance sensor module, and the auxiliary negative pressure of the negative pressure pipe, thereby ensuring the cleaning effect of the printing roller surface after being scraped by the scraper head to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0019] Figure 2 for Figure 1 A partial enlarged structural diagram of point A in the middle (cleaning scraper mechanism).

[0020] Figure 3 for Figure 2 Schematic diagram of the structure with a partial enlargement at point B in the middle.

[0021] Figure 4 for Figure 2 Schematic diagram of the structure with a partial enlargement at point C in the middle.

[0022] Figure 5 It is a schematic diagram (front view) of the scraping slope of the scraper head in the present invention.

[0023] Description of reference numerals:

[0024] 1-Raw material pool, 101-Printing raw material; 2-Motor, 201-Stirring blade; 3-Printing roller; 4-Forward printing scraper; 5-Base paper; 6-Pressure roller; 7-Cleaning scraper mechanism, 701-Horizontal fixed cylinder, 702-Cylinder cavity, 703-First push plate, 704-Pressure sensor module, 705-Second push plate, 706-Spring, 707-Servo propulsion device, 708-First propulsion rod, 709-Second propulsion rod Feed rod, 710-first distance sensor module, 711-mounting base, 712-multi-way pipe fitting, 713-scraper head, 714-scraper slope, 715-suction hole, 716-return pipe, 717-negative pressure pipe, 718-return groove, 719-detection bracket, 720-second distance sensor module, 721-inner inclined plate of material blocking, 722-level detection module, 723-exhaust pipe outlet; 8-material accumulation area. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Embodiment 1

[0027] See also Figure 1 , the printing material 101 is located in the material pool 1. During the rotation of the printing roller 3, its bottom is located in the printing material 101 in the material pool 1. A rolling pressure roller 6 is arranged above the printing roller 3, and a base paper 5 is continuously advanced between the printing roller 3 and the pressure roller 6.

[0028] The forward printing scraper 4 is located at the upstream position where the printing roller 3 contacts the base paper 5 during printing. The forward printing scraper 4 scrapes off the excess printing material on the printing roller 3 .

[0029] The cleaning scraper mechanism 7 is located at the downstream position where the printing roller 3 contacts the base paper 5 during printing. The cleaning scraper mechanism 7 scrapes off the residual material that is closely attached to the surface of the printing roller 3 after the printing roller 3 is printed.

[0030] The raw material pool 1 is provided with a stirring mechanism, which is located directly below the cleaning scraper mechanism 7. The stirring mechanism includes a motor 2 and a stirring blade 201. The motor 2 is installed at the bottom of the raw material pool 1, and the stirring blade 201 is installed in the raw material pool 1. The motor 2 drives the stirring blade 201 to rotate. The scraper head 713 (combined with Figure 3 ) The scraped printing material 101 is discharged into the position of the raw material pool 1 equipped with a stirring blade 201, and is stirred for secondary printing and recycling.

[0031] See also Figure 2 The cleaning scraper mechanism 7 includes a horizontal fixed cylinder 701, the interior of the horizontal fixed cylinder 701 is a cylinder cavity 702, the cylinder cavity 702 is provided with a first push plate 703, a second push plate 705 and a spring 706 located between the first push plate 703 and the second push plate 705, and the first push plate 703 is embedded with a pressure sensing module 704 in contact with one end of the spring 706. A servo propulsion device 707 is configured on one side of the horizontal fixed cylinder 701, and a first propulsion rod 708 is movably installed on one side end of the cylinder cavity 702 of the horizontal fixed cylinder 701, and the first propulsion rod 708 is connected to the servo propulsion device 707, and the inner side end of the first propulsion rod 708 extending into the cylinder cavity 702 is fixedly connected to the first push plate 703. The second push rod 709 is movably mounted on the other side of the cylinder cavity 702 of the horizontal fixed cylinder 701 , the outer end of the second push rod 709 is fixedly connected to the mounting base 711 , and the inner end of the second push rod 709 extending into the cylinder cavity 702 is fixedly connected to the second push plate 705 .

[0032] The horizontal fixed cylinder 701 is connected to the mounting base 711 through the second push rod 709, and the second push rod 709 drives the mounting base 711 to move synchronously. The mounting base 711 is equipped with a multi-way pipe 712 connected to the gas source device, and the multi-way pipe 712 is provided with a suction pipe port 723, and the suction pipe port 723 is connected to the gas source device through an air pipe. A plurality of branch pipes are arranged in the multi-way pipe 712, and the plurality of branch pipes are connected to the suction pipe port 723. The plurality of branch pipes are connected to the negative pressure pipe 717 (combined with the negative pressure pipe 717). Figure 3) are independently connected one by one.

[0033] When installing the horizontal fixing tube 701 , the horizontal fixing tube 701 is fixedly installed horizontally by observing the horizontal detection module 722 (the horizontal detection module 722 is fixedly installed on the horizontal fixing tube 701 ).

[0034] See also Figure 3 The mounting base 711 is provided with a scraper head 713 and a detection bracket 719. The scraper head 713 contacts the surface of the printing roller 3. The detection bracket 719 is located on the upper side of the mounting base 711. The scraper head 713 is provided with a scraper inclined surface 714 and a plurality of suction holes 715 (the scraper inclined surface 714 is also provided with a return groove 718, combined with Figure 5 , the openings of multiple suction holes 715 are connected to the return groove 718), a material accumulation area 8 is formed between the scraper slope 714 and the surface of the printing roller 3, and the multi-way pipe fitting 712 is connected to a plurality of negative pressure pipes 717, and the negative pressure pipes 717 are connected to the suction holes 715 of the scraper head 713 (the negative pressure pipes 717 are connected to the suction holes 715 one by one, that is, one negative pressure pipe 717 is connected to one suction hole 715), and a plurality of second distance sensor modules 720 are arranged on the detection bracket 719, and the second distance sensor module 720 is opposite to the material accumulation area 8 (the sensing detection direction of the second distance sensor module 720 is opposite to the position where the scraper head 713 contacts the surface of the printing roller 3).

[0035] The lower side of the scraper head 713 is connected to the return pipe 716, which is connected to the suction hole 715 of the scraper head 713. A material blocking inner inclined plate 721 is fixedly provided at the connection position between the negative pressure pipe 717 and the suction hole 715 of the scraper head 713, and a gap is left between the material blocking inner inclined plate 721 and the upper wall of the suction hole 715.

[0036] The distribution positions of the plurality of second distance sensor modules 720 and the plurality of material suction holes 715 are matched with each other (it can also be said to be one-to-one matched), and the distribution positions of the second distance sensor modules 720 and the material suction holes 715 are also matched with each other.

[0037] See also Figure 4 A first distance sensor module 710 is embedded in the side end plate of the horizontal fixed cylinder 701 . The first distance sensor module 710 is opposite to the first distance sensor module 710 of the second push plate 705 . The first distance sensor module 710 senses and detects the distance between the second push plate 705 and the first distance sensor module 710 .

[0038] Embodiment 2

[0039] The present invention relates to a self-cleaning method for tipping paper printing, including debugging and installing a cleaning scraper mechanism, cleaning scraper of the cleaning scraper mechanism, etc., specifically as follows:

[0040] I. Debugging and installation of the cleaning and scraping mechanism: ① Through the horizontal detection module 722, the horizontal installation and fixation of the horizontal fixing cylinder 701 are completed. ② The servo propulsion device 707 drives the first push plate 703 to move linearly, and the pressure sensing module 704 detects the pressure of the spring 706 on the pressure sensing module 704 in real time. ③ After the pressure sensing module 704 senses and detects that the pressure value first increases linearly and then remains constant for a certain period of time, and then the pressure sensing module 704 senses and detects that the pressure value increases linearly again, through the corresponding matching relationship of the system time domain parameters, the distance parameter sensed and detected by the first distance sensing module 710 when the pressure parameter sensed and detected by the pressure sensing module 704 starts to increase from the constant value is determined, and this distance parameter is denoted as L. ④ Adjust the position of the first push plate 703 through the servo propulsion device 707 to adjust the distance between the second push plate 705 and the first distance sensing module 710 to L.

[0041] II. Scraping and cleaning of the cleaning and scraping mechanism: ① The scraping knife head 713 contacts and scrapes the surface position of the printing roller 3 after printing the base paper 5, and the second distance sensing module 720 senses and detects the accumulated material depth of the accumulated material area 8, and the real-time accumulated material depth is set as Hx. ② The system presets the maximum accumulated material depth Hmax. When the real-time accumulated material depth is lower than the maximum accumulated material depth preset by the system, that is, Hx < Hmax, the accumulated material in the accumulated material area 8 flows downward through the material suction hole 715 and the return pipe 716 to the raw material pool 1. ③ When the real-time accumulated material depth sensed and detected by any one of the second distance sensing modules 720 on the detection support 719 is not lower than the maximum accumulated material depth preset by the system, that is, Hx >= Hmax, start the gas source device connected to the multi-way pipe fitting 712, and perform negative pressure suction on the material suction hole 715 through the negative pressure pipe 717 to increase the suction intensity of the material suction hole 715 for the accumulated material in the accumulated material area until the real-time accumulated material depth is lower than the maximum accumulated material depth preset by the system, and then stop the negative pressure effect.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cleaning device for printing tipping paper, wherein a printing material (101) is contained in a material pool (1), the bottom of a printing roller is located in the printing material (101) in the material pool (1), a continuously advancing base paper (5) and a rolling pressure roller (6) are arranged above the printing roller (3), and a forward printing scraper (4) is arranged at an upstream position where the printing roller (3) contacts the base paper (5) during printing. Features: A cleaning scraper mechanism (7) is provided at a downstream position where the printing roller (3) contacts the base paper (5) for printing. A stirring mechanism is provided in the raw material pool (1) and is located directly below the cleaning scraper mechanism (7). The cleaning scraper mechanism (7) comprises a horizontal fixed cylinder (701). The horizontal fixed cylinder (701) is provided with a horizontal detection module (722). The interior of the horizontal fixed cylinder (701) is a cylinder cavity (702). A first push plate (703), a second push plate (705), and a stirring mechanism located between the first push plate (703) and the first push plate (705) are provided in the cylinder cavity (702). a spring (706) between the two push plates (705), the first push plate (703) being embedded with a pressure sensing module (704) in contact with one end of the spring (706), a side end plate of the horizontal fixed cylinder (701) being provided with a first distance sensing module (710) facing the second push plate (705), a servo propulsion device (707) for pushing the first push plate (703) being provided on one side of the horizontal fixed cylinder (701), and a mounting base (711) moving synchronously with the second push plate (705) being provided on the other side of the horizontal fixed cylinder (701); The mounting base (711) is provided with a multi-way pipe fitting (712) connected to an air source device, a scraper head (713) in contact with the surface of a printing roller (3), and a detection bracket (719) located on the upper side of the mounting base (711); the scraper head (713) is provided with a scraper slope (714) and a plurality of suction holes (715); a material accumulation area (8) is formed between the scraper slope (714) and the surface of the printing roller (3); the multi-way pipe fitting (712) is connected to a plurality of negative pressure pipes (717); the negative pressure pipes (717) are connected to the suction holes (715) of the scraper head (713); and the detection bracket (719) is provided with a plurality of second distance sensor modules (720) facing the material accumulation area (8).

2. A tipping paper printing self-cleaning device according to claim 1, Features: A first propulsion rod (708) connected to a servo propulsion device (707) is movably mounted on one side end of the cylinder cavity (702) of the horizontal fixed cylinder (701), and the first push plate (703) is fixedly connected to the inner side end of the first propulsion rod (708) extending into the cylinder cavity (702); A second pushing rod (709) is movably mounted on the other side end of the cylinder cavity (702) of the horizontal fixed cylinder (701); the outer end of the second pushing rod (709) is fixedly connected to the mounting base (711); and the second pushing plate (705) is fixedly connected to the inner end of the second pushing rod (709) extending into the cylinder cavity (702).

3. A tipping paper printing self-cleaning device according to claim 1, Features: A material return groove (718) communicating with the material suction hole (715) is provided on the scraping inclined surface (714) of the scraping blade head (713); a material return pipe (716) is connected to the lower side of the scraping blade head (713); and the material return pipe (716) is communicated with the material suction hole (715) of the scraping blade head (713).

4. A tipping paper printing self-cleaning device according to claim 1, Features: A material-blocking inner inclined plate (721) is fixedly provided at the connection position between the negative pressure pipe (717) and the material suction hole (715) of the scraper head (713), and a gap is left between the material-blocking inner inclined plate (721) and the upper wall of the material suction hole (715).

5. A tipping paper printing self-cleaning device according to claim 1, Features: The sensing detection position of the second distance sensing module (720) is exactly opposite to the position where the scraper head (713) contacts the surface of the printing roller (3).

6. A tipping paper printing self-cleaning device according to claim 1, Features: The number of the second distance sensing modules (720) is the same as the number of the material suction holes (715), and the distribution positions of the second distance sensing modules (720) and the material suction holes (715) correspond to each other.

7. A tipping paper printing self-cleaning device according to claim 1, Features: The stirring mechanism comprises a motor (2) mounted on the bottom side of the raw material pool (1) and a stirring blade (201) located in the raw material pool (1); the stirring blade (201) is mounted on the output shaft of the motor (2).

8. A self-cleaning method for printing tipping paper, It is characterized in that A tipping paper printing self-cleaning device according to any one of claims 1 to 7 is used, comprising the following steps: ㈠Debugging and installation of cleaning scraper mechanism ① The horizontal installation and fixation of the horizontal fixing cylinder (701) is completed through the horizontal detection module (722); ② The servo propulsion device (707) drives the first push plate (703) to move linearly, and the pressure sensing module (704) detects the pressure of the spring (706) on the pressure sensing module (704) in real time; ③ After the pressure sensing module (704) senses that the pressure value first increases linearly and then remains at a constant value for a certain period of time, the pressure sensing module (704) senses that the pressure value increases linearly again, and through the corresponding matching relationship of the system time domain parameters, the distance parameter sensed by the first distance sensing module (710) when the pressure sensing module (704) senses that the pressure parameter starts to increase from a constant value is determined, and the distance parameter is recorded as L; ④ adjusting the position of the first push plate (703) by means of the servo propulsion device (707), and adjusting the distance between the second push plate (705) and the first distance sensor module (710) to L; ㈡ Cleaning of scraper mechanism ① The scraper head (713) contacts and scrapes the surface of the printing roller (3) after printing the base paper (5), and the second distance sensor module (720) senses and detects the depth of the accumulated material in the accumulated material area (8), and the real-time accumulated material depth is set as Hx; ②The system presets the maximum accumulated material depth Hmax. When the real-time accumulated material depth is lower than the maximum accumulated material depth preset by the system, that is, Hx < Hmax, the accumulated material in the accumulated material area (8) flows downward through the material suction holes (715). ③When the real-time accumulated material depth sensed and detected by any one of the second distance sensing modules (720) on the detection bracket (719) is not lower than the maximum accumulated material depth preset by the system, that is, Hx >= Hmax, start the gas source device connected to the multi-way pipe fitting (712), and perform negative pressure suction on the material suction holes (715) through the negative pressure pipe (717) to increase the suction intensity of the material suction holes (715) for the accumulated material in the accumulated material area until the real-time accumulated material depth is lower than the maximum accumulated material depth preset by the system, and then stop the negative pressure effect.

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