Printing roller ink scraper capable of being externally connected

Abstract

The utility model discloses a printing roller ink scraper capable of being externally connected, which comprises a supporting shell, an even number of symmetrical rolling shafts are rotatably arranged in a groove of the supporting shell, and the supporting shell is connected with a supporting plate through a sliding shaft and a spring. The supporting plate is rotationally provided with a bent swing rod, the swing rod is provided with a limiting rack, and the inner supporting rod and the outer supporting rod are connected through a limiting sliding frame. A long shaft of the outer supporting rod is provided with a limiting rod matched with a limiting rack ratchet wheel. The ink scraper is composed of a sliding seat, a sliding rod, a mounting rod and a scraper. The ink scraping device can be directly installed on the upper printing roller shaft and the lower printing roller shaft and is suitable for printing rollers of various specifications, the ink scraping angle and position are flexibly adjusted through cooperation of limiting and the ratchet wheel and buffering stable supporting of the spring, the problems that a traditional ink scraping device is poor in installation adaptability, inconvenient to adjust, insufficient in stability and the like are solved, and the ink scraping effect of the printing rollers and the device universality are improved.

Description

Technical Field

[0001] This application relates to the field of printing roller doctoring technology, specifically to an externally connectable printing roller doctoring device. Background Technology

[0002] In the printing industry, cleaning the ink from the surface of printing rollers is crucial for ensuring print quality. Traditional printing roller doctor blades have several problems that urgently need to be addressed. First, their installation often relies on the specific mounting structure of the printing equipment, which not only increases the design and manufacturing costs of the printing equipment but also limits the applicability of the doctor blades to different printing devices. For some older printing equipment or printing rollers with special specifications, it may be impossible to install a suitable doctor blade. Second, existing doctor blades are not flexible enough in terms of adjusting the scraping angle and position, making it difficult to make precise adjustments according to different printing needs and the surface condition of the printing roller, resulting in poor scraping effect and affecting print quality.

[0003] In addition, some doctor blades are prone to breakage and detachment of components such as slides and slide bars during the doctor blade process due to unreasonable support structure design, which reduces the stability and service life of the device and increases maintenance costs and downtime.

[0004] Therefore, it is of great significance to develop an external printing roller doctor that is easy to install, adaptable to various specifications of printing rollers, has flexible adjustment of the doctoring angle and position, and is stable. Summary of the Invention

[0005] In view of the above-mentioned technical problems, this application solves the problems of poor installation adaptability and inconvenience in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: an externally connectable printing roller doctor blade, comprising a support shell, a groove provided on the support shell, an even number of symmetrically arranged rollers rotatably arranged on the groove, multiple sliding shafts and springs for buffering fixedly arranged on the support shell, a support plate slidably arranged on the sliding shafts, four swing rods rotatably arranged on the support plate, the swing rods being bent, a limiting rack fixedly arranged on the swing rods, a limiting slide mounted on each swing rod, an outer support rod and an inner support rod slidably arranged on different limiting slides, a long shaft rotatably arranged on the outer support rod, a limiting rod fixedly arranged on the long shaft, the limiting rod meshing with the teeth on the limiting rack, and a doctor blade arranged on the support plate.

[0007] Preferably, the doctor blade includes a slide block, a slide rod, a mounting rod, and a doctor blade. The support plate is bolted to the slide block, the slide rod is slidably mounted on the slide block, the slide rod is rotatably connected to the mounting rod, and the doctor blade is fixedly mounted on the mounting rod.

[0008] Preferably, two inner mounting shafts are fixedly installed on the inner support rod, and the distance between the two inner mounting shafts is the same as the distance between the two through holes of the support plate.

[0009] Preferably, a swing shaft is rotatably mounted on the through hole of the support plate, and a swing torsion spring is fixedly mounted at both ends of the swing shaft, and the two swing torsion springs are respectively fixedly connected to a swing rod.

[0010] Preferably, the four swing rods are divided into two groups of two, which are respectively installed on the swing shafts on the through holes on both sides of the support plate, and a connecting rod is fixedly installed between each group of swing rods.

[0011] Preferably, a reset torsion spring is fixedly installed at both ends of the long shaft, and the two reset torsion springs are fixedly connected to the outer support rod and the inner support rod, respectively.

[0012] The technical solution provided in this application has the following advantages compared with the prior art:

[0013] 1. This application can be directly installed on the roller shafts of the upper and lower printing rollers, without the need for additional installation structures in the printing device, thus reducing the installation requirements for the printing rollers and improving market competitiveness.

[0014] 2. The even-numbered symmetrically arranged rollers in this application can accommodate upper and lower printing rollers of different specifications, ensuring stable contact. The bending design of the swing rod and its cooperation with the limiting slide, inner support rod, and outer support rod can flexibly adjust the size of the lower opening to adapt to the installation of printing rollers of different specifications, thus improving the versatility of the device.

[0015] 3. The limiting rod and the limiting rack of this application form a ratchet engagement, which can realize the unidirectional adjustment and fixation of the height of the inner support rod, stabilize the position of the support shell, and ensure stable contact between the roller and the printing roller shaft.

[0016] 4. The buffer structure composed of the sliding shaft and spring in this application can buffer and stabilize the contact after the roller contacts the printing roller through the spring force, thereby reducing the vibration of the device and extending its service life.

[0017] 5. The mounting rod of the doctor blade in this application can rotate and be fixed in position on the slide rod, which facilitates the adjustment of the doctor blade's scraping angle, meets different scraping needs, and improves the scraping effect.

[0018] 6. The slide bar of this application slides on the slide base, which allows for manual control of the doctor blade position, making operation simple and further optimizing the ink scraping effect.

[0019] 7. The two sliding frames on the slide block of this application are located on the outside of the two swing rods on one side of the support plate, which enhances the support capacity of the slide rod, ensures the stability of the device during ink scraping, and prevents the slide block and slide rod from breaking and separating. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 for Figure 1 Enlarged view of the local structure at point A;

[0022] Figure 3 This is a side view of this application;

[0023] Figure 4 This is a schematic diagram of the swing arm structure of this application;

[0024] Figure 5 for Figure 4 Enlarged view of the local structure at point B;

[0025] Figure 6 for Figure 4 Enlarged view of the local structure shown in C;

[0026] Figure 7 This is a structural diagram of the internal support rod for the application.

[0027] In the diagram: 101-Upper printing roller; 102-Lower printing roller; 103-Support shell; 104-Roller; 105-Slide shaft; 106-Spring; 107-Support plate; 108-Swing rod; 109-Swing shaft; 110-Swing torsion spring; 111-Connecting rod; 112-Slide seat; 113-Slide rod; 114-Mounting rod; 115-Scraper; 116-Limiting rack; 117-Inner support rod; 118-Long shaft; 119-Limiting rod; 120-Reset torsion spring; 121-Outer support rod; 122-Limiting slide; 123-Inner mounting shaft. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] like Figures 1 to 7As shown, an externally connectable printing roller doctor includes a support shell 103. The support shell 103 has a groove on which an even number of symmetrically arranged rollers 104 are rotatably mounted. Multiple sliding shafts 105 and a buffer spring 106 are fixedly mounted on the support shell 103. A support plate 107 is slidably mounted on the sliding shafts 105. Four swing rods 108 are rotatably mounted on the support plate 107. The swing rods 108 are bent. A limiting rack 116 is fixedly mounted on each swing rod 108. A limiting slide 122 is slidably mounted on each of the different limiting slides 122. An outer support rod 121 and an inner support rod 117 are slidably mounted on the outer support rod 121. A long shaft 118 is rotatably mounted on the outer support rod 121. A limiting rod 119 is fixedly mounted on the long shaft 118. The limiting rod 119 meshes with the teeth on the limiting rack 116. The doctor is mounted on the support plate 107.

[0031] The bending design of the swing rod 108 allows for a greater variation in the opening range of its lower end relative to its upper end when the swing rod 108 rotates on the support plate 107. This leverages the lever principle, allowing the operator to control the upper end of the swing rod 108, resulting in a larger swing amplitude at its lower end when the swing rod 108 rotates on the support plate 107. This makes adjustment easier. Furthermore, the bending of the swing rod 108 causes its lower end to tilt, forming a V-shaped structure between the two swing rods 108. The inner support rod 117 is supported by the limiting slide 122. The support plate 107 utilizes the lateral sliding between the limiting slide 122 and the inner support rod 117 and outer support rod 121 to accommodate the vertical movement of the inner support rod 117 and the support plate 107, thus adapting to the V-shaped structure of the swing rod 108. When encountering a lower printing roller 102 of a larger or smaller size, the swing rod 108 can be controlled to open, making the opening at the lower end of the swing rod 108 larger or smaller for easier installation. When the opening changes, the lateral sliding of the limiting slide 122 on the inner support rod 117 and outer support rod 121 is used for adjustment. Therefore, the bending structure of the swing rod 108 adapts to lower printing rollers 102 of different sizes, improving its adaptability.

[0032] Specifically, the device of this application is directly installed on the roller shafts of the upper printing roller 101 and the lower printing roller 102 and is restricted to stabilize the position of the doctor blade 115 and ensure the doctor blade 115's ability to scrape ink from the upper printing roller 101 and the lower printing roller 102.

[0033] like Figure 3 and Figure 4As shown, the device of the application is provided with two sets of support shells 103 and one set of inner support rods 117. Each set of support shells 103 includes a support shell 103, a roller 104, a sliding shaft 105, a spring 106 and a support plate 107. The set of inner support rods 117 includes... In use, the lower set of support shells 103 and inner support rods 117 need to be moved out of the swing rods 108. Then, the operator manually controls the upper support plate 107 and the swing rods 108 so that the openings between the lower ends of the four swing rods 108 are inserted into the roller shafts of the upper printing roller 101 and the lower printing roller 102, so that the rollers 104 inside the upper support shell 103 contact the roller shaft of the upper printing roller 101. Through an even number of symmetrically arranged rollers 104, it can accommodate various specifications of upper printing rollers 101 and lower printing rollers 102. When in contact with the upper printing roller 101, there is one roller 104 on each side that can contact the upper printing roller 101, thereby ensuring stable contact and avoiding contact from only a single roller 104.

[0034] Each long axis 118 of the inner support rod 117 is provided with two limiting rods 119, which correspond to the limiting racks 116 on the swing rod 108 respectively. The limiting rods 119 and the teeth on the limiting racks 116 form a ratchet engagement, that is, the limiting rods 119 can only move upward in one direction on the limiting racks 116. When it is necessary to move downward, the long axis 118 needs to be manually controlled to rotate, so that the limiting rods 119 on it disengage from the limiting racks 116, thereby canceling the restriction. After the upper roller 104 contacts the upper printing roller 101, the lower support plate 107 and inner support rod 117 are then inserted into the swing rod 108. The height of the inner support rod 117 is adjusted upwards by the ratchet engagement of the limiting rod 119 and the limiting rack 116 on the inner support rod 117, causing the roller 104 on the lower support shell 103 to contact the roller shaft of the lower printing roller 102. Then, the ratchet engagement of the limiting rod 119 and the limiting rack 116 restricts the downward movement of the inner support rod 117. The engagement of the limiting rod 119 and the limiting rack 116 stabilizes the position of the support shell 103, thereby stabilizing the contact between the lower roller 104 and the lower printing roller 102.

[0035] Both the upper and lower support shells 103 utilize sliding shafts 105 and springs 106 to buffer the contact force. Specifically, after the roller 104 contacts the upper printing roller 101 or the lower printing roller 102, it continues to push the support plate 107. The support plate 107 slides along the sliding shaft 105 towards the support shell 103, compressing the spring 106 on the sliding shaft 105. The elastic force of the spring 106 buffers and stabilizes the contact force of the roller 104 on the support shell 103. This method allows the device to be installed on the printing roller without requiring a separate installation structure on the printing apparatus, thus improving installation convenience, significantly reducing the requirements for the printing rollers to be installed, and enhancing market competitiveness.

[0036] The support plates 107 at both ends of the upper end are provided with threaded holes, which can be used to install a doctor blade to scrape ink from the upper printing roller 101 and the lower printing roller 102.

[0037] like Figure 1 and Figure 2 As shown, the doctor blade includes a slide 112, a slide rod 113, a mounting rod 114, and a doctor blade 115. The support plate 107 is bolted to the slide 112. The slide rod 113 is slidably disposed on the slide 112. The slide rod 113 is rotatably connected to the mounting rod 114. The doctor blade 115 is fixedly mounted on the mounting rod 114.

[0038] Specifically, different doctor blades 115 can be installed on the mounting rod 114 as needed to achieve different ink scraping effects. During ink scraping, the operator manually pushes the mounting rod 114 to control the slide rod 113 to slide on the slide base 112. The slide base 112 is equipped with two sliding frames, which are located on the outside of the two swing rods 108 on one side of the support plate 107. By setting up two sliding frames, stable support is provided to ensure support capacity and prevent the slide base 112 and slide rod 113 from breaking or detaching during scraping. Before scraping, the angle of the doctor blade 115 can be adjusted by controlling the mounting rod 114 to rotate on the slide rod 113 and fix its position.

[0039] like Figure 6 and Figure 7 As shown, two inner mounting shafts 123 are fixedly installed on the inner support rod 117, and the distance between the two inner mounting shafts 123 is the same as the distance between the two through holes of the support plate 107.

[0040] Specifically, the spacing of the inner mounting shafts 123 on the inner support rod 117 is the same as the spacing of the holes on the support plate 107 for mounting the swing shafts 109. Thus, two swing shafts 109 are installed on the holes of the upper support plate 107 for mounting the swing rod 108. The holes of the lower support plate 107 are inserted into the two inner mounting shafts 123 of the inner support rod 117, so that the inner support rod 117 is mounted on the inner support rod 117. This allows the support plate 107 to follow the movement of the inner support rod 117, thereby achieving contact between the lower roller 104 and the lower printing roller 102.

[0041] like Figure 4 and Figure 5 As shown, a swing shaft 109 is rotatably mounted on the through hole of the support plate 107. A swing torsion spring 110 is fixedly mounted at both ends of the swing shaft 109, and the two swing torsion springs 110 are respectively fixedly connected to a swing rod 108.

[0042] Specifically, during installation and disassembly, it is necessary to control the rotation of the two sets of swing rods 108 on the support plate 107 to adjust the distance between the openings at the lower ends of the four swing rods 108, so as to facilitate the insertion and removal of the upper printing roller 101 and the lower printing roller 102.

[0043] like Figure 4 and Figure 5 As shown, the four swing rods 108 are divided into two groups of two, which are respectively installed on the swing shafts 109 on the through holes on both sides of the support plate 107. A connecting rod 111 is fixedly installed between each group of swing rods 108.

[0044] Specifically, two swing rods 108 on one side are connected by connecting rod 111, so that the operator can control the rotation of the four swing rods 108 on the support plate 107 by holding the two connecting rods 111.

[0045] like Figure 6 and Figure 7 As shown, a reset torsion spring 120 is fixedly installed at both ends of the long shaft 118, and the two reset torsion springs 120 are fixedly connected to the outer support rod 121 and the inner support rod 117 respectively.

[0046] Specifically, the rotation of the long shaft 118 and the limiting rod 119 is reset by the reset torsion spring 120, so that they rotate toward the limiting rack 116. Thus, when the limiting rod 119 moves upward, after passing one tooth of the limiting rack 116, it can quickly contact the next tooth under the action of the reset torsion spring 120. After stopping, it contacts and abuts against the previous tooth by gravity, supporting the inner support rod 117 and the limiting slide 122, and thus supporting the supporting plate 107 at the lower end and other structures.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An externally connectable printing roller doctor blade, comprising a support housing (103), characterized in that: The support shell (103) is provided with a groove, on which an even number of symmetrically arranged rollers (104) are rotatably arranged. Multiple sliding shafts (105) and a buffer spring (106) are fixedly arranged on the support shell (103). A support plate (107) is slidably arranged on the sliding shafts (105). Four swing rods (108) are rotatably arranged on the support plate (107). The swing rods (108) are bent. A limit rack is fixed on the swing rods (108). (116) Each swing rod (108) is slidably provided with a limiting slide (122). Different limiting slides (122) are respectively provided with an outer support rod (121) and an inner support rod (117). A long shaft (118) is rotatably provided on the outer support rod (121). A limiting rod (119) is fixedly provided on the long shaft (118). The limiting rod (119) meshes with the teeth on the limiting rack (116). A doctor blade is provided on the support plate (107).

2. The externally connectable printing roller doctor according to claim 1, characterized in that: The doctor blade includes a slide (112), a slide rod (113), a mounting rod (114), and a doctor blade (115). The support plate (107) is bolted to the slide (112). The slide rod (113) is slidably mounted on the slide (112). The slide rod (113) is rotatably connected to the mounting rod (114). The doctor blade (115) is fixedly mounted on the mounting rod (114).

3. The externally connectable printing roller doctor according to claim 1, characterized in that: Two inner mounting shafts (123) are fixedly installed on the inner support rod (117), and the distance between the two inner mounting shafts (123) is the same as the distance between the two through holes of the support plate (107).

4. The externally connectable printing roller doctor according to claim 1, characterized in that: A swing shaft (109) is rotatably mounted on the through hole of the support plate (107). A swing torsion spring (110) is fixedly mounted at both ends of the swing shaft (109), and the two swing torsion springs (110) are respectively fixedly connected to a swing rod (108).

5. The externally connectable printing roller doctor according to claim 4, characterized in that: The four swing rods (108) are divided into two groups of two, which are respectively installed on the swing shafts (109) on the two sides of the support plate (107). A connecting rod (111) is fixedly installed between each group of swing rods (108).

6. The externally connectable printing roller doctor according to claim 1, characterized in that: A reset torsion spring (120) is fixedly installed at both ends of the long shaft (118), and the two reset torsion springs (120) are fixedly connected to the outer support rod (121) and the inner support rod (117) respectively.

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