Roller and roller device

Abstract

The utility model discloses a roller and a roller device, and relates to the field of printing and coating, the roller comprises an inner cylinder, an outer roller sleeve and a central pipe assembly, when a medium needs to be added into the roller, the medium is added into a containing cavity of the central pipe assembly, after the preset adding amount is reached, only the central pipe assembly needs to be pushed into the inner cylinder, the whole roller is laid flat, and then the medium is added into the containing cavity of the central pipe assembly. A medium in the central pipe assembly flows to a gap between the central pipe assembly and the inner cylinder through the oil port, and the medium in the gap flows out of the outer roller sleeve through the oil holes in the inner cylinder and permeates into the outer roller sleeve; according to the center pipe assembly, the problem that the medium at the bottom of the inner cylinder seeps outwards firstly in the process of adding the medium into the inner cylinder is solved, the problem that printing ink is distributed unevenly can be avoided, and therefore the printing or coating quality can be improved. The utility model further discloses a roller device which is convenient to use and high in coating quality.

Description

Technical Field

[0001] The present application relates to the field of printing and coating, and in particular to a roller and a roller device. Background Art

[0002] Most of the existing printing paper ink printing is completed by mechanized equipment, but for a small number of personalized printed products, it is not possible to use a production line to complete it due to the color matching of the design ink, etc. For such printed products, a manually operated roller device is usually used to complete it.

[0003] The roller in the prior art mainly consists of an inner cylinder and a sponge sleeve coaxially sleeved on the outer circumference of the inner cylinder. By adding ink into the inner cylinder and then placing the inner cylinder horizontally, the ink seeps out from the oil holes on the outer circumferential wall of the inner cylinder onto the sponge sleeve, and then is rolled and coated onto the workpiece through the sponge sleeve. The roller in the prior art has the problem that in the process of adding ink to the inner cylinder, the ink at the bottom of the inner cylinder will first seep out from the oil holes onto the sponge sleeve, which causes the ink to be unevenly distributed at various positions on the sponge sleeve, directly affecting the quality of printing or coating. Utility Model Content

[0004] The embodiments of the present application provide a roller and a roller device, which can prevent the medium from leaking out prematurely and improve the coating quality.

[0005] In the first aspect, the present application provides a roller, comprising an inner cylinder, an outer roller sleeve and a center tube assembly; a plurality of oil holes are arranged on the outer circumferential surface of the inner cylinder, and the outer roller sleeve surrounds and wraps around the plurality of oil holes of the inner cylinder; the center tube assembly is arranged inside the inner cylinder, the center tube assembly has a accommodating cavity for storing a medium, and there is a gap between the center tube assembly and the inner circumferential surface of the inner cylinder, the first end of the center tube assembly is closed, and the second end of the center tube assembly is provided with an oil port for connecting the accommodating cavity and the gap.

[0006] In a second aspect, the present application provides a roller device, comprising a bracket and a roller; the roller is rotatably disposed on the bracket.

[0007] The roller and roller device of the present application have at least the following beneficial effects:

[0008] The roller of the present application includes an inner cylinder, an outer roller sleeve and a center tube assembly. When it is necessary to add a medium (such as ink) into the roller, it is first added into the accommodating cavity of the center tube assembly. When a predetermined amount of addition is reached, the center tube assembly only needs to be pushed into the interior of the inner cylinder, and the entire roller is laid flat, so that the medium in the center tube assembly flows through the oil port to the gap between the center tube assembly and the inner cylinder, and the medium in the gap then flows out to the outer roller sleeve through multiple oil holes on the inner cylinder and penetrates into the outer roller sleeve. The center tube assembly of the present application solves the problem that the medium at the bottom of the inner cylinder first seeps out during the process of adding the medium into the inner cylinder, and can avoid the problem of uneven ink distribution, thereby improving the quality of printing or coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0010] Figure 1 is a cross-sectional schematic diagram of a roller in the present application;

[0011] Figure 2 yes Figure 1 Enlarged view of point A in the middle

[0012] Figure 3 is an axial exploded view of the roller in this application;

[0013] Figure 4 It is a schematic diagram of the structure of the inner cylinder in this application;

[0014] Figure 5 is another cross-sectional schematic diagram of the roller in the present application;

[0015] Figure 6 yes Figure 5 The enlarged view of point B in the middle;

[0016] Figure 7 yes Figure 5 Enlarged view of point C in the middle;

[0017] Figure 8 is a partial schematic diagram of the central tube of the present application;

[0018] Fig. 9 It is a partial schematic diagram of the center tube and the end sleeve of the present application;

[0019] Fig.10 It is a schematic diagram of the structure of the end cover of the present application;

[0020] Fig.11 It is a structural schematic diagram of the roller device in this application;

[0021] Description of the reference numerals is as follows:

[0022] 100. Roller;

[0023] 10, inner cylinder; 10a, oil hole; 101, first end of inner cylinder; 102, second end of inner cylinder; 11, second plug;

[0024] 20. Outer roller sleeve;

[0025] 30, center tube assembly; 30a, accommodating chamber; 30b, gap; 30c, oil port; 31, center tube;

[0026] 311, first end of the center tube; 312, second end of the center tube; 32, end sleeve; 32a, notch groove; 321, tapered sleeve; 322, ring sleeve; 3221, arc-shaped sheet; 3222, arc-shaped gasket; 3223, stopper surface; 33, first plug; 331, bottom plate; 332, sleeve mouth;

[0027] 200. Bracket. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0029] 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", "comprise" or any other variants 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. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] like Figure 1 and Figure 2As shown, this embodiment discloses a roller and a roller device, and firstly introduces the roller 100 in this embodiment. The roller 100 in this embodiment comprises an inner cylinder 10, an outer roller sleeve 20 and a central tube assembly 30; a plurality of oil holes 10a are arranged on the outer circumference of the inner cylinder 10, and the outer roller sleeve 20 surrounds and wraps around the plurality of oil holes 10a of the inner cylinder 10; the central tube assembly 30 is arranged inside the inner cylinder 10, and the central tube assembly 30 has a receiving cavity 30a for storing a medium, and a gap 30b (radial gap) is provided between the central tube assembly 30 and the inner circumference of the inner cylinder 10, and the first end of the central tube assembly 30 is closed, and an oil port 30c for connecting the receiving cavity 30a and the gap 30b is provided on the second end of the central tube assembly 30.

[0031] In this embodiment, by arranging the central tube assembly 30 inside the inner tube 10, the problem of medium leakage caused by directly adding the medium into the inner tube 10 can be avoided. The medium in this embodiment includes ink or other fluid liquids.

[0032] like Figure 1 and Figure 2 As shown, the outer roller cover 20 is an object with a certain degree of permeability, such as a sponge, a rubber body, etc. The outer roller cover 20 is in the shape of a circular column, and the outer roller cover 20 surrounds and wraps around the outer circumference of the inner cylinder 10, and the inner side of the outer roller cover 20 is in direct contact with the outer circumference of the inner cylinder 10. The outer roller cover 20 can cover all the oil holes 10a on the inner cylinder 10, and the medium passing through the oil holes 10a can penetrate into the outer roller cover 20 and be coated on the external object from the outer roller cover 20.

[0033] like Figure 1 and Figure 2 As shown, the shape of the inner cylinder 10 is a circular column, and the inner diameter of the inner cylinder 10 is larger than the outer diameter of the central tube assembly 30, so that there is a predetermined gap 30b between the inner cylinder 10 and the central tube assembly 30. The size of the gap 30b can be selected according to actual conditions and is not limited in this embodiment.

[0034] The first end 101 of the inner tube is open, and the second end 102 of the inner tube is closed. There are two ways to close the second end 102 of the inner tube (the second way is shown in this embodiment):

[0035] The first type is that the end surface of the second end 102 of the inner cylinder is integrally formed with the outer circumferential surface of the inner cylinder 10;

[0036] The second type, such as Figure 3 As shown, the second end 102 of the inner cylinder is provided with a second plug 11, and the second plug 11 is inserted into the second end 102 of the inner cylinder, thereby sealing the second end 102 of the inner cylinder.

[0037] The inner cylinder 10 is provided with a plurality of oil holes 10a on its outer circumference. The oil holes 10a may be evenly distributed on the outer circumference of the inner cylinder 10, or in some preferred embodiments, the plurality of oil holes 10a on the inner cylinder 10 are unevenly distributed, for example: Figure 4 As shown, in the axial direction of the inner cylinder 10 (i.e., in the direction away from the oil port 30c), the density of the multiple oil holes 10a on the inner cylinder 10 gradually increases, wherein the number of the oil holes 10a gradually increases from the second end 102 of the inner cylinder to the first end 101 of the inner cylinder, and the second end 102 of the inner cylinder is configured as an end close to the oil port 30c.

[0038] like Figure 4 As shown, in this embodiment, the closer the inner part of the inner cylinder 10 is to the oil port 30c, the more ink it can contact. In order to make the ink evenly distributed and seep onto the outer roller sleeve 20, the number of oil holes 10a is gradually increased in the direction away from the oil port 30c, so that more ink can seep out from the tail end of the inner cylinder 10, ensuring the uniform distribution of ink on the outer roller sleeve 20, thereby improving the coating quality. In addition. In other embodiments, in the direction away from the oil port 30c, the inner diameters of the multiple oil holes 10a on the inner cylinder 10 are gradually increased, so that the oil holes 10a farther from the oil port 30c have a larger flow rate, thereby making the ink evenly distributed and seeping onto the outer roller sleeve 20.

[0039] like Figures 5 to 7 As shown, the center tube assembly 30 includes a center tube 31, the first end 311 of the center tube is closed, and the oil port 30c is provided on the second end 312 of the center tube, wherein the interior of the center tube 311 is configured as the accommodating chamber 30a, and the accommodating chamber 30a is used to accommodate the medium.

[0040] In some embodiments, there are multiple oil ports 30c, and multiple oil holes 10a are evenly distributed along the circumference of the center tube 31. The oil port 30c is located near the second end 312 of the center tube. The axial length of the center tube 31 is at least one-half of the axial length of the inner tube 10, and in this embodiment, it is preferably at least two-thirds or more.

[0041] There are two ways to close the first end 311 of the central tube (the second way is shown in this embodiment):

[0042] In the first type, the end surface of the first end 311 of the central tube is integrally formed with the outer circumferential surface of the central tube 31;

[0043] The second type, such as Figure 5 and Figure 6As shown, the first end 311 of the center tube is provided with a first plug 33, and the first plug 33 is fitted with the end surface of the first end of the center tube 31 to achieve the closure of the first end of the center tube 31. At least part of the first plug 33 is sleeved on the outer circumference of the center tube 31 to block the gap 30b. The first plug 33 can be used to close the first end 311 of the center tube. The first plug 33 can also block the gap 30b between the first end of the center tube and the first end of the inner tube to prevent the medium from flowing out from this position. The first plug 33 includes a bottom plate portion 331 and a sleeve portion 332. The end surface of the bottom plate portion 331 is fitted on the end surface of the first end of the center tube 31. The axial end surface of the sleeve portion 332 is set on the bottom plate portion 331, and the sleeve portion 332 is coaxially sleeved on the first end 311 of the center tube. The sleeve portion 332 is located between the first end of the center tube 31 and the gap 30b of the inner tube 10, thereby achieving the closure of this position.

[0044] The second end 312 of the central tube is provided with an oil port 30c. There are two ways to provide the oil port 30c on the central tube 31:

[0045] The first one, such as Figure 8 As shown, an oil port 30 c is provided on the outer circumference of the center tube 31 , and the oil port 30 c is located near the end surface close to the second end of the center tube 31 .

[0046] The second type, such as Fig. 9 As shown, the center tube assembly 30 also includes an end sleeve 32; the end sleeve 32 is sleeved on the second end 312 of the center tube, and a notch groove 32a is provided on the end sleeve 32, and the oil port 30c is formed between the notch groove 32a and the end of the center tube 31, and the end sleeve 32 can be removed from the center tube 31 to facilitate adding ink into the center tube 31.

[0047] like Fig. 9 and Fig.10 As shown, in this embodiment, the end sleeve 32 (elastic material) includes a tapered sleeve 321 and an annular sleeve 322; the two axial end faces of the tapered sleeve 321 are respectively configured as a small opening end face and a large opening end face, and along the axial direction of the center tube 31, the small opening end face of the tapered sleeve 321 is away from the center tube 31; the axial end face of the annular sleeve 322 is connected to the large opening end face of the tapered sleeve 321, and the connection here can be bonding or integral molding; the outer diameter of the large opening of the tapered sleeve 321 is equal to or slightly larger than (here slightly larger than, for example, 1.1 to 1.3 times) the inner diameter of the inner tube 10; the inner circumference of the annular sleeve 322 is coaxially sleeved on the second end 312 of the center tube, and a plurality of notch grooves 32a are provided on the annular sleeve 322, and an oil port 30c is formed between the notch groove 32a and the second end 312 of the center tube, and the medium flows from the oil port 30c to the gap 30b between the center tube 31 and the inner tube 10.

[0048] In this embodiment, the end sleeve 32 is configured to include a tapered sleeve 321. The small port of the tapered sleeve 321 can facilitate the insertion of the center tube 31 into the interior of the inner tube 10, play a role in guiding the center tube 31, and facilitate assembly. On the other hand, since the middle part of the tapered sleeve 321 is a hollow part, there is no need to remove the end sleeve 32 when adding ink. It is only necessary to open the second plug 11 and then directly add ink to the interior of the center tube 31 through the hollow part inside the tapered sleeve 321.

[0049] like Fig. 9 and Fig.10 As shown, in this embodiment, the ring sleeve 322 includes a plurality of arc-shaped pieces 3221 (four arc-shaped pieces 3221 are shown in this embodiment), and the plurality of arc-shaped pieces 3221 are arranged on the large opening end surface of the conical sleeve 321 at equal intervals along the circumference of the conical sleeve 321, and the plurality of arc-shaped pieces 3221 are circumferentially embraced on the outer circumference of the second end 312 of the central tube, and the inner circumference of the arc-shaped piece 3221 is fitted with the outer circumference of the central tube 31, wherein the notch groove 32a is formed between two circumferentially adjacent arc-shaped pieces 3221. The ring sleeve 322 in this embodiment adopts the principle of broken piece expansion, and the plurality of arc-shaped pieces 3221 are made of a material with a certain elastic force, so that the plurality of arc-shaped pieces 3221 can be tightly embraced on the outer circumference of the central tube 31, and the installation is convenient.

[0050] like Fig.10 As shown, in this embodiment, the ring sleeve 322 further includes an arc-shaped gasket 3222, which is arranged one-to-one with the arc-shaped piece 3221, and the inner circumference of the arc-shaped gasket 3222 is fitted and connected with the outer circumference of the arc-shaped piece 3221, and the outer circumference of the arc-shaped gasket 3222 is fitted with the inner circumference of the inner cylinder 10. The arc-shaped gasket 3222 can make up for the gap difference between the arc-shaped piece 3221 and the inner circumferential wall of the inner cylinder 10, so that the second end 312 of the central tube can be firmly fixed inside the inner cylinder 10, and multiple arc-shaped gaskets 3222 separate each oil port 30c into an independent oil outlet position to avoid ink accumulation.

[0051] like Figure 7 and Fig.10 As shown, in this embodiment, in the axial direction of the tapered sleeve 321, part of the end surface of the arc-shaped piece 3221 (one end surface away from the tapered sleeve 321) sinks inward toward the tapered sleeve 321 to form a stop surface 3223, and the stop surface 3223 can fit against the axial end surface of the second end of the center tube 31, thereby achieving positioning between the inner tube 10 and the end sleeve 32. There is a distance L (as shown in FIG. 1 ) between the stop surface 3223 and the end surface of the arc-shaped piece 3221 (the end surface of the part that has not sunk). Figure 7 As shown in FIG. 1 , the size of the distance L directly affects the size of the oil port 30 c, so the size of the oil port 30 c can be changed by replacing the end cap 32 with a different distance L.

[0052] like Fig.11 As shown, this embodiment further discloses a roller device, which includes a bracket 200 and a roller 100 ; the roller 100 is rotatably disposed on the bracket 200 .

[0053] In this embodiment, the two axial ends of the inner cylinder 10 are rotatably connected to the bracket 200, wherein the bracket 200 is configured as a Y-shaped bracket 200. The roller device of this embodiment is easy to use and has high coating quality.

[0054] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A roller, characterized in that: It comprises an inner cylinder (10), an outer roller sleeve (20) and a central tube assembly (30); A plurality of oil holes (10a) are arranged on the outer peripheral surface of the inner cylinder (10), and the outer roller sleeve (20) surrounds and wraps around the plurality of oil holes (10a) of the inner cylinder (10); The center tube assembly (30) is arranged inside the inner tube (10), the center tube assembly (30) has a storage chamber (30a) for storing a medium, a gap (30b) is provided between the center tube assembly (30) and the inner circumferential surface of the inner tube (10), the first end of the center tube assembly (30) is closed, and the second end of the center tube assembly (30) is provided with an oil port (30c) for connecting the storage chamber (30a) and the gap (30b).

2. The roller according to claim 1, characterized in that Along the direction away from the oil port (30c), the density of the plurality of oil holes (10a) on the inner cylinder (10) gradually increases or the inner diameter of the oil holes (10a) gradually increases.

3. The roller according to claim 1 or 2, characterized in that: The center tube assembly (30) comprises a center tube (31); the center tube (31) is arranged inside the inner tube (10), and the interior of the center tube (31) is configured as the accommodating chamber (30a); the first end (311) of the center tube is closed, and the oil port (30c) is provided on the second end (312) of the center tube.

4. The roller according to claim 3, characterized in that The center tube assembly (30) further comprises an end sleeve (32); the end sleeve (32) is sleeved on the second end (312) of the center tube, a notch groove (32a) is provided on the end sleeve (32), and the oil port (30c) is formed between the notch groove (32a) and the end of the center tube (31).

5. The roller according to claim 4, characterized in that The end sleeve (32) comprises a conical sleeve (321) and an annular sleeve (322); the conical sleeve (321) has a small opening end face and a large opening end face, and the small opening end face of the conical sleeve (321) faces away from the center tube (31); the axial end face of the annular sleeve (322) is connected to the large opening end face of the conical sleeve (321), the annular sleeve (322) is coaxially sleeved on the second end (312) of the center tube, and the notch groove (32a) is provided on the annular sleeve (322).

6. The roller according to claim 5, characterized in that The annular sleeve (322) comprises a plurality of arc-shaped pieces (3221); the plurality of arc-shaped pieces (3221) are arranged on the large opening end surface at intervals along the circumference of the conical sleeve (321); the inner circumference of the arc-shaped piece (3221) is in contact with the outer circumference of the central tube (31); and the notch groove (32a) is formed between two circumferentially adjacent arc-shaped pieces (3221).

7. The roller according to claim 6, characterized in that The annular sleeve (322) further comprises an arc-shaped gasket (3222); the inner circumferential surface of the arc-shaped gasket (3222) is fitted with the outer circumferential surface of the arc-shaped sheet (3221), and the outer circumferential surface of the arc-shaped gasket (3222) is fitted with the inner circumferential surface of the inner cylinder (10).

8. The roller according to claim 6 or 7, characterized in that The inner circumference of the arc-shaped piece (3221) is provided with a stop surface (3223), and the stop surface (3223) is used to fit and abut against the axial end surface of the inner cylinder (10).

9. The roller according to claim 3, characterized in that The central tube assembly (30) further comprises a first plug (33); the first plug (33) is fitted with the end surface of the first end of the central tube to seal the first end of the central tube, and at least part of the first plug (33) is sleeved on the outer circumference of the central tube (31) to seal the gap (30b).

10. A roller device, characterized in that: It comprises a support (200) and a roller (100) according to any one of claims 1 to 9; the roller (100) is rotatably arranged on the support (200).

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