Cooling roller and temperature control device

Abstract

The present invention provides a cooling roller and a temperature control device, relating to the field of printing technology. The cooling roller comprises an inner roller, an outer roller, and an end cap. The outer roller is sleeved onto the inner roller. The outer wall of the inner roller is provided with at least one cooling water channel extending along the axis of the inner roller. Both end surfaces of the inner roller are provided with a first receiving groove, and both ends of the inner roller are provided with a flow gap connecting the first receiving groove and the cooling water channel. The end cap is provided in the first receiving groove and is statically sealed with the outer roller. A connecting flow channel is provided within the end cap, connecting the first receiving groove and an external water source. The temperature control device comprises a housing and cooling rollers. At least one cooling roller is arranged along a first direction, and at least two cooling rollers are arranged along a second direction. The cooling rollers in the first direction are arranged alternately with the cooling rollers in the second direction. The first and second directions are parallel and spaced apart, with the spacing being less than the diameter of the cooling rollers. The end cap is statically sealed with the outer roller, preventing water leakage at the sealing portion of the cooling rollers.

Description

Technical Field

[0001] The invention relates to a cooling roller and a temperature control device, belonging to the technical field of printing. Background Art

[0002] A printing press is a machine that prints text and images. During the printing process, the temperature of the printing paper affects the adhesion of the printing ink to the printing paper, so the temperature of the printing paper needs to be adjusted before printing.

[0003] In related art, a temperature control device for regulating the temperature of printing paper includes a housing and a cooling roller. The housing is provided with a printing paper inlet and a printing paper outlet, defining a printing paper transport path within the housing between the two. Multiple cooling rollers are spaced along the transport path along the paper's forward direction. The cooling roller includes a roller, a cooling jacket, a fixed cover, a sealing ring, and a fixed seat. A cooling water channel is provided on the surface of the roller, and the cooling jacket is mounted on the roller. Two fixed covers are mounted on either end of the roller and are securely connected to the roller. The fixed cover is provided with a first water hole positioned opposite the cooling water channel. The sealing ring is mounted on the roller and positioned between the fixed cover and the cooling jacket. Two fixed seats are mounted on either end of the roller and are rotatably connected to the roller. The fixed seat is sealed with the sealing cover. A water inlet groove is provided on the surface of the fixed seat where it contacts the fixed cover, and a second water hole connected to the water inlet groove is provided on the side wall of the fixed seat.

[0004] However, after long-term use, water leakage may occur at the sealing connection between the fixing seat and the sealing cover. Summary of the Invention

[0005] The present invention provides a cooling roller and a temperature control device, which solves the problem in the prior art that water leakage occurs at the sealing connection between the fixing seat and the sealing cover after long-term use.

[0006] A first aspect of the present invention is to provide a cooling roller comprising an inner roller, an outer roller and an end cap;

[0007] The outer roller is sleeved on the inner roller;

[0008] At least one cooling water channel extending along the axis of the inner roller is provided on the outer wall of the inner roller, a first receiving groove is provided on the end surface of both ends of the inner roller, and a flow gap connecting the first receiving groove and the cooling water channel is provided on both ends of the inner roller;

[0009] The end cover includes a first main body portion, a first connecting portion and a connecting flow channel;

[0010] The first end of the first connecting portion is fastened to the first main body, and the second end of the first connecting portion is used to be rotatably connected to the housing of the temperature control device;

[0011] The first main body is covered on the first receiving groove and is statically sealed with the outer roller;

[0012] The connecting flow channel includes a first part and a second part;

[0013] The first portion is disposed in the first main body and is used to communicate with the first receiving groove;

[0014] The second portion is disposed in the first connecting portion and is used to communicate with an external water source.

[0015] Optionally, the inner roller includes a hollow tubular body portion and two barrier portions;

[0016] The two blocking portions are spaced apart and arranged inside the tube body along the length direction of the tube body and are fastened to the tube body, and the outer sides of the blocking portions and the tube body define the first receiving groove;

[0017] The flow gap and the cooling water channel are arranged on the tube body.

[0018] Optionally, the first main body portion is a circular plate or a polygonal plate.

[0019] Optionally, the first main body is firmly connected to the outer roller and the first main body abuts against the inner roller; or,

[0020] The first main body is tightly connected to the inner roller and abuts against the outer roller.

[0021] Optionally, the first connecting portion includes a first shaft segment, a second shaft segment and a third shaft segment that are coaxial and sequentially arranged;

[0022] The end of the first shaft segment is firmly connected to the first main body;

[0023] The outer diameter of the first shaft segment is greater than the outer diameter of the second shaft segment, and the outer diameter of the second shaft segment is greater than the outer diameter of the third shaft segment.

[0024] Optionally, the outer roller includes a second main body portion and two second connecting portions;

[0025] The second main body is sleeved on the inner roller;

[0026] The two second connection parts are respectively sleeved on both ends of the second main body and are firmly connected to the second main body. The second connection parts are in surface contact with the first main body and are firmly connected.

[0027] Optionally, the second main body is a tubular structure, and the second connecting portion is a circular ring; or,

[0028] The second main body portion is a tubular structure, and the second connecting portion is a polygonal ring.

[0029] Optionally, it further includes a sealing ring groove and a sealing ring;

[0030] The sealing ring groove is provided on the contact surface between the second connecting portion and the first main body portion;

[0031] Part of the sealing ring is embedded in the sealing ring groove.

[0032] Optionally, the cooling water channel is a spiral water channel arranged around the axis of the inner roller, and the rotation direction of the spiral water channel is the same as the rotation direction of the outer roller.

[0033] A second aspect of the present invention is to provide a temperature control device comprising a housing and the above-mentioned cooling roller;

[0034] The housing is provided with a printing paper inlet and a printing paper outlet, wherein a printing paper transmission path located inside the housing is defined between the printing paper inlet and the printing paper outlet;

[0035] The cooling roller is arranged on the printing paper transmission path and both ends of the cooling roller are rotatably connected to the housing;

[0036] At least one cooling roller is arranged along the first direction, and at least two cooling rollers are arranged along the second direction, and the cooling rollers in the first direction and the cooling rollers in the second direction are arranged alternately;

[0037] The first direction and the second direction are parallel and have a distance therebetween, and the distance is smaller than a diameter of the cooling roller.

[0038] The cooling roller and temperature control device provided by the present invention include an inner roller, an outer roller and an end cover; the outer roller is sleeved on the inner roller; at least one cooling water channel extending along the axial direction of the inner roller is provided on the outer wall of the inner roller, and a first accommodating groove is provided on the end faces of both ends of the inner roller and a flow gap connecting the first accommodating groove and the cooling water channel is provided at both ends of the inner roller; the end cover includes a first main body, a first connecting part and a connecting flow channel; the first end of the first connecting part is fastened to the first main body, and the second end of the first connecting part is used for rotational connection with the shell of the temperature control device; the first main body is covered on the first accommodating groove and is statically sealed with the outer roller; the connecting flow channel includes a first part and a second part; the first part is arranged in the first main body and is used to communicate with the first accommodating groove; the second part is arranged in the first connecting part and is used to communicate with an external water source.

[0039] The present invention provides first receiving grooves at both ends of the inner roller, covers them with end caps, and integrates connecting channels to connect an external water source to the first receiving grooves. This allows cooling water to enter the first receiving grooves and flow through the flow gaps into the cooling water channel. During the control process, the outer roller rotates synchronously with the end caps, maintaining their relative position. This creates a static seal between the end caps and the outer roller, preventing wear on the end caps and preventing water leakage at the sealed connection between the outer roller and the end caps. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and other objects, features and advantages of the embodiments of the present invention will become more readily understood through the following detailed description with reference to the accompanying drawings, in which several embodiments of the present invention are illustrated by way of example and not limitation, in which:

[0041] Figure 1 An axonometric view of a cooling roller according to an embodiment of the present invention;

[0042] Figure 2 A cross-sectional view of a cooling roller according to an embodiment of the present invention;

[0043] Figure 3 This is an axonometric view of an inner roller according to an embodiment of the present invention;

[0044] Figure 4 is a cross-sectional view of an inner roller according to an embodiment of the present invention;

[0045] Figure 5 This is an axonometric view of the temperature control device according to an embodiment of the present invention in an open state;

[0046] Figure 6 This is an axonometric view of the temperature control device according to an embodiment of the present invention in a closed state;

[0047] Figure 7 is a cross-sectional view of a temperature control device according to an embodiment of the present invention;

[0048] Figure 8 It is a left side view of the temperature control device according to an embodiment of the present invention.

[0049] Reference numerals:

[0050] 100- cooling roller;

[0051] 10-inner roller; 11-cooling water channel; 12-first receiving groove; 13-circulation gap; 14-tube body; 15-blocking part;

[0052] 20-outer roller; 21-second main body; 22-second connecting portion; 23-sealing ring groove;

[0053] 30-end cover; 31-first main body; 32-first connecting portion; 33-connecting flow channel;

[0054] 40-sealing ring;

[0055] 50-frame; 51-bottom plate; 52-first side plate; 53-second side plate;

[0056] 60-protective cover; 61-first rectangular plate; 62-second rectangular plate; 63-gas spring;

[0057] 70-support foot; 71-support seat; 72-support screw;

[0058] 81-paper guide roller; 82-rotating joint; 83-waterway accessories; 831-valve body; 832-first pipe joint; 833-second pipe joint;

[0059] 91-Printing paper export; 92-Printing paper import. DETAILED DESCRIPTION

[0060] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0061] It should be understood that the following embodiments do not limit the execution order of the steps in the method protected by the present invention. The steps of the method of the present invention can be executed in any possible order and in a cyclic manner without conflict.

[0062] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "inside", "axial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0064] In the present invention, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0066] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0067] In related art, a temperature control device for regulating the temperature of printing paper includes a housing and a cooling roller. The housing is provided with a printing paper inlet and a printing paper outlet, defining a printing paper transport path within the housing. Multiple cooling rollers are spaced along the transport path along the paper's forward direction. The cooling roller includes a roller, a cooling jacket, a fixed cover, a sealing ring, and a fixed seat. A cooling water channel is provided on the surface of the roller, and the cooling jacket is mounted on the roller. Two fixed covers are mounted on either end of the roller and are securely connected to the roller. The fixed cover is provided with a first water hole positioned opposite the cooling water channel. The sealing ring is mounted on the roller and positioned between the fixed cover and the cooling jacket. Two fixed seats are mounted on either end of the roller and are rotatably connected to the roller. The fixed seat is sealed with the sealing cover. A water inlet groove is provided on the surface of the fixed seat where it contacts the fixed cover. A second water hole connected to the water inlet groove is provided on the side wall of the fixed seat.

[0068] However, after long-term use, water leakage may occur at the sealing connection between the fixing seat and the sealing cover.

[0069] After careful analysis, the inventors of the present disclosure discovered that the primary cause of the aforementioned problem is that the fixed seat sleeve is mounted on the roller and rotatably connected to it. During roller rotation, the fixed seat remains stationary relative to the roller, while the fixed cover is securely connected to the roller. This results in a dynamic seal between the fixed seat and the fixed cover, which can wear at the sealed connection between the fixed cover and the fixed seat. When this wear reaches a certain level, water leaks from the sealed connection between the fixed cover and the fixed seat. To address this, the inventors initially considered replacing the dynamic seal between the fixed cover and the fixed seat with a static seal. However, the water inlet on the fixed seat is located on the sidewall of the fixed seat. This could cause the water pipe connected to the fixed seat to become entangled with the roller during rotation, rendering the cooling roller unusable. Therefore, the inventors of the present disclosure abandoned the existing cooling roller structure and redesigned a cooling roller that, while ensuring cooling water inflow, prevents wear at the sealed connection of the cooling roller, thereby preventing water leaks.

[0070] Specifically, the present disclosure provides a cooling roller comprising an inner roller, an outer roller, and an end cap. The outer roller is sleeved on the inner roller. A cooling water channel is provided on the outer surface of the inner roller, and a receiving groove is provided on the end surfaces at both ends of the inner roller. A notch connecting the cooling water channel and the receiving groove is provided on both ends of the inner roller. The end cap covers the receiving groove and is statically sealed with the outer roller. A flow channel connecting an external water source and the receiving groove is provided on the end cap. Cooling water circulation is achieved through a flow pattern of flow channel-receiving groove-circulation notch-cooling water channel-circulation notch-receiving groove-flow channel. Compared with existing cooling rollers, there is no relative movement between the end cap and the roller of the present disclosure, making the seal between the end cap and the outer roller static, thus eliminating wear. Furthermore, the cooling roller of the present disclosure only has a static seal between the end cap and the outer roller, thereby simplifying the structure of the cooling roller, thereby improving the reliability of the cooling roller and reducing the manufacturing cost of the cooling roller.

[0071] The cooling roller and the temperature control device provided by the present invention are described in detail below with reference to specific embodiments.

[0072] Figure 1 This is an axonometric view of the cooling roller of this embodiment; Figure 2 is a cross-sectional view of the cooling roller of this embodiment; Figure 3 It is an axonometric view of the inner roller of this embodiment.

[0073] like Figure 1-Figure 3 As shown, this embodiment provides a cooling roller 100, comprising an inner roller 10, an outer roller 20 and an end cover 30. The outer roller 20 is sleeved on the inner roller 10.

[0074] At least one cooling water channel 11 extending along the axial direction of the inner roller 10 is provided on the outer wall of the inner roller 10, a first accommodating groove 12 is provided on the end face of both ends of the inner roller 10, and a flow gap 13 connecting the first accommodating groove 12 and the cooling water channel 11 is provided on both ends of the inner roller 10.

[0075] The end cap 30 includes a first main portion 31, a first connecting portion 32, and a connecting channel 33. The first end of the first connecting portion 32 is securely connected to the first main portion 31, while the second end of the first connecting portion 32 is rotatably connected to the housing of the temperature control device. The first main portion 31 covers the first receiving groove 12 and is statically sealed with the outer roller 20.

[0076] The connecting channel 33 includes a first portion and a second portion, wherein the first portion is disposed in the first main body portion 31 and is used to communicate with the first receiving tank 12 ; the second portion is disposed in the first connecting portion 32 and is used to communicate with an external water source.

[0077] It should be noted that when the outer roller 20 is sleeved on the inner roller 10 , the outer roller 20 and the inner roller 10 are clearance-fitted, or the outer roller 20 and the inner roller 10 are interference-fitted.

[0078] The outer roller 20 covers the cooling water channel 11 on the inner roller 10 to prevent the cooling water from contacting the printing paper while transferring the heat of the printing paper to the cooling water to regulate the temperature of the printing paper.

[0079] The function of the inner roller 10 is to define at least one flow channel for cooling water to flow together with the outer roller 20. It can be understood that the above-mentioned flow channel is defined by the cooling water channel 11 and the inner wall of the outer roller 20, so that all parts of the outer roller 20 can absorb the heat of the printing paper.

[0080] It should be noted that the inner roller 10 is in the shape of a solid cylinder or a hollow cylinder.

[0081] The end surfaces of both ends of the inner roller 10 are provided with a first receiving groove 12 , which can store a certain amount of cooling water to ensure that each cooling water channel 11 contains cooling water.

[0082] The longitudinal cross-section of the first receiving groove 12 may be circular or polygonal. For example, the longitudinal cross-section of the first receiving groove 12 is rectangular.

[0083] The function of the flow gap 13 is to allow the cooling water in the first receiving tank 12 to flow into the cooling water channel 11, so that the cooling roller 100 can adjust the temperature of the printing paper.

[0084] The shape of the circulation opening 13 can be circular or polygonal. For example, the shape of the circulation opening 13 is rectangular.

[0085] The number of the flow gaps 13 depends on the number of the cooling water channels 11. For example, one cooling water channel 11 corresponds to one flow gap 13. The width of the flow gap 13 can be larger or smaller than the width of the cooling water channel 11, or even equal to the width of the cooling water channel 11.

[0086] It should be noted that the first main body portion 31 and the first connecting portion 32 are an integrally formed structure, which can reduce the manufacturing difficulty of the end cover 30 and improve the connection strength between the first main body portion 31 and the first connecting portion 32, thereby increasing the service life of the end cover 30.

[0087] The first main body 31 covers the first receiving groove 12 and is statically sealed with the outer roller 20. The first main body 31 and the outer roller 20 define a receiving cavity for the inner roller 10, thereby preventing cooling water from flowing out of the outer roller 20. The first main body 31 is tightly connected to the outer roller 20 or the inner roller 10, so that the first main body 31 and the outer roller 20 form a static sealing structure.

[0088] The first connection part 32 is used to be connected to the housing of the temperature control device in a rotational manner. In addition, the first connection part 32 can also be connected to the power device to drive the outer roller 20 and the inner roller 10 to rotate, or the outer roller 20 drives the end cover 30 to rotate under the action of the printing paper. For example, in this embodiment, the outer roller 20 is driven by the printing paper to rotate, thereby driving the cooling roller 100 to rotate.

[0089] The function of the connecting channel 33 is to transport the cooling water to the first containing tank 12 so that the cooling water can flow into the cooling channel.

[0090] It should be noted that the cooling water channel 11 can be a strip-shaped water channel extending along the axis of the inner roller 10, or the cooling water channel 11 can be a spiral water channel arranged around the axis of the inner roller 10, and the rotation direction of the spiral water channel is the same as the rotation direction of the cooling roller 100. In other words, the rotation direction of the spiral water channel is the same as the rotation direction of the outer roller 20, thereby minimizing the water resistance and further reducing the water pump head requirement, thereby improving the temperature control efficiency of the cooling roller 100. Figure 3 As shown, in this embodiment, the cooling water channel 11 is a spiral water channel.

[0091] The longitudinal cross-section of the cooling water channel 11 is polygonal or arc-shaped. For example, the longitudinal cross-section of the cooling water channel 11 is rectangular.

[0092] Figure 4 2 is a cross-sectional view of the inner roller of this embodiment.

[0093] like Figure 2-Figure 4As shown, in an optional implementation, the inner roller 10 includes a hollow tubular portion 14 and two barrier portions 15. The two barrier portions 15 are spaced apart along the length of the tubular portion 14 and are securely connected to the tubular portion 14. The outer sides of the barrier portions 15 define a first receiving groove 12 with the tubular portion 14. A flow opening 13 and a cooling water channel 11 are provided on the tubular portion 14. The tubular portion and barrier portions 15 form the inner roller 10 into a hollow cylinder, thereby reducing the mass of the inner roller 10 and, in turn, the rotational inertia of the cooling roller 100, thereby lowering the requirements for the power device driving the cooling roller 100.

[0094] It should be noted that the outer shape of the tube body 14 is cylindrical.

[0095] The tube body 14 and the barrier portion 15 may be connected by welding, or the tube body 14 and the barrier portion 15 may be an integrally formed structure to improve the connection strength between the tube body 14 and the barrier portion 15 so as to withstand cooling water of greater pressure.

[0096] The shape of first receiving groove 12 is determined by barrier portion 15. For example, when barrier portion 15 is a circular plate, the longitudinal cross-section of first receiving groove 12 is circular. Alternatively, when barrier portion 15 is a polygonal plate, the longitudinal cross-section of first receiving groove 12 is polygonal. In this embodiment, barrier portion 15 is a circular plate, and the axis of tubular body 14 is perpendicular to barrier portion 15.

[0097] It should be pointed out that the cooling water channel 11 is arranged on the outer wall of the tube body 14, and the flow gap 13 is arranged on both ends of the tube body 14. In order to prevent the tube body 14 and the end cover 30 from rotating relative to each other, the end of the tube body 14 can be abutted against the end cover 30, or the tube body 14 can be interference connected with the outer roller 20.

[0098] like Figure 1 As shown, in an optional embodiment, the first main body 31 is a circular plate or a polygonal plate. The first main body 31 is a flat plate structure, covering the first receiving groove 12 while making surface contact with the outer roller 20. Thus, the first main body 31 and the outer roller 20 are in surface contact to expand the sealing area, thereby improving the sealing effect.

[0099] It should be noted that, in this embodiment, the first main body portion 31 is a circular plate, and the outer diameter of the first main body portion 31 is greater than or equal to the outer diameter of the outer roller 20 .

[0100] In an optional embodiment, the first body portion 31 is tightly connected to the outer roller 20 and abuts against the inner roller 10; or the first body portion 31 is tightly connected to the inner roller 10 and abuts against the outer roller 20. The end cap 30 is tightly connected to the outer roller 20 to ensure that the seal between the end cap 30 and the outer roller 20 is a static seal.

[0101] like Figure 1 and Figure 2 As shown, schematically, the first main body 31 can be fastened to the outer roller 20 by means of a threaded connection. Specifically, the first main body 31 is provided with a plurality of first fixing holes that penetrate the first main body 31, and the plurality of first fixing holes are arranged around the inner roller 10 and spaced apart. The contact surface between the outer roller 20 and the first main body 31 is provided with a plurality of second fixing holes, and the plurality of second fixing holes are arranged around the inner roller 10 and spaced apart. The plurality of first fixing holes corresponds one-to-one to the plurality of second fixing holes, and fixing bolts are inserted into the corresponding first fixing holes and second fixing holes, and the fixing bolts are threadedly connected to the first main body 31 and the outer roller 20.

[0102] It should be noted that when the first main body 31 is tightly connected to the outer roller 20 , the inner roller 10 abuts against the first main body 31 , and both ends of the inner roller 10 abut against one end cover 30 respectively, thereby preventing the inner roller 10 from rotating.

[0103] In an optional embodiment, the first connecting portion 32 is a rod-shaped structure, and the longitudinal cross-section of the first connecting portion 32 is circular, or the longitudinal cross-section of the first connecting portion 32 is polygonal. The longitudinal cross-section of the first connecting portion 32 is a cross-section perpendicular to the center line of the first connecting portion 32.

[0104] like Figure 1 and Figure 2 As shown, schematically, the first connecting portion 32 is a stepped shaft structure. For example, the first connecting portion 32 includes a first shaft segment, a second shaft segment, and a third shaft segment that are coaxial and arranged in sequence. The end of the first shaft segment is securely connected to the first main body 31; the outer diameter of the first shaft segment is greater than that of the second shaft segment, and the outer diameter of the second shaft segment is greater than that of the third shaft segment. The first connecting portion 32 adopts a stepped shaft structure, which can limit the axial movement of the cooling roller 100 and is rotationally connected to the housing of the temperature control device. The axis of the first connecting portion 32 coincides with the centerline of the first main body 31 of the circular plate, and the first connecting portion 32 is arranged perpendicular to the first main body 31.

[0105] It should be noted that the first connection portion 32 may be rotatably connected to the housing of the temperature control device by using a bearing.

[0106] like Figure 2As shown, in one possible implementation, the first portion has a rectangular longitudinal section and a polygonal or circular cross section; alternatively, the first portion has a circular or polygonal cross section, and the longitudinal section of the first portion includes a first rectangular segment and a second rectangular segment. The first end of the first rectangular segment is fastened to the first end of the second rectangular segment, the second end of the first rectangular segment communicates with the first end of the second portion, and the second end of the second rectangular segment communicates with the first receiving groove 12. The width of the first rectangular segment is smaller than the width of the second rectangular segment. The width of the second rectangular segment can be smaller than or larger than the width of the first receiving groove 12, and can even be equal to the width of the first receiving groove 12.

[0107] like Figure 2 As shown, in one possible implementation, the first end of the second portion is connected to the first end of the first portion, and the second end of the second portion can be disposed on the end surface or outer wall of the first connecting portion 32. For example, in this embodiment, the second end of the second portion is disposed on the end surface of the first connecting portion 32, and the centerline of the second portion coincides with the centerline of the first connecting portion 32.

[0108] Schematically, the longitudinal section of the second part is rectangular, and the cross section of the second part is polygonal or circular, or the longitudinal section of the second part includes a plurality of rectangular segments arranged in sequence, and the cross section of the second part is polygonal or circular.

[0109] like Figure 1 and Figure 2 As shown, in an optional embodiment, the outer roller 20 includes a second main body 21 and two second connecting parts 22. The second main body 21 is sleeved onto the inner roller 10; the two second connecting parts 22 are sleeved on both ends of the second main body 21 and are securely connected to the second main body 21. The second connecting parts 22 are in surface contact with the first main body 31 and are securely connected. This arrangement ensures a static seal between the end cap 30 and the outer roller 20.

[0110] The second main body portion 21 and the second connecting portion 22 are an integrally formed structure, which can improve the connection strength between the second main body portion 21 and the second connecting portion 22 .

[0111] The second main body 21 is sleeved on the inner roller 10. In other words, the length of the inner roller 10 is less than or equal to the length of the second main body 21. The first main body 31 contacts the end surface of the second main body 21 to close the outer roller 20, thereby forming a cavity to accommodate the inner roller 10. Therefore, there is only one contact surface between the first main body 31 and the outer roller 20 that needs to be sealed.

[0112] It should be noted that the outer roller 20 composed of the second main body portion 21 and the second connecting portion 22 has a shape similar to an I-shape.

[0113] It should be noted that the connection method between the first main body 31 and the second connecting part 22 can adopt the above-mentioned threaded connection method between the first main body 31 and the outer roller 20 , wherein the second fixing hole is set through the second connecting part 22 .

[0114] It should be pointed out that the sealing surface between the end cover 30 and the outer roller 20 can be set on the contact surface between the first main body 31 and the second main body 21, or on the contact surface between the first main body 31 and the second connecting part 22, or even part of the sealing surface is located on the contact surface between the first main body 31 and the second main body 21, and the other part of the sealing surface is located on the contact surface between the first main body 31 and the second connecting part 22.

[0115] like Figure 1 As shown, optionally, the second main body portion 21 is a tubular structure, and the second connecting portion 22 is a circular ring; or, the second main body portion 21 is a tubular structure, and the second connecting portion 22 is a polygonal ring.

[0116] like Figure 2 As shown, in an optional embodiment, a sealing ring groove 23 and a sealing ring 40 are further included. The sealing ring groove 23 is provided on the contact surface between the second connecting portion 22 and the first main portion 31; a portion of the sealing ring 40 is embedded in the sealing ring groove 23. The provision of the sealing ring 40 can improve the sealing between the end cap 30 and the outer roller 20, thereby preventing water leakage.

[0117] It should be noted that the inner diameter of the sealing ring groove 23 is larger than the outer diameter of the inner roller 10 .

[0118] The sealing ring 40 may be an O-type rubber ring.

[0119] It should be noted that, since the end cover 30 and the outer roller 20 are statically sealed, there is no relative movement between the end cover 30 and the outer roller 20 , and thus the sealing ring 40 will not be worn.

[0120] Figure 5 This is an axonometric view of the temperature control device of this embodiment in an open state; Figure 6 This is an axonometric view of the temperature control device of this embodiment in a closed state; Figure 7 2 is a cross-sectional view of the temperature control device of this embodiment.

[0121] like Figure 5-Figure 7 As shown, this embodiment further provides a temperature control device, comprising a housing and the aforementioned cooling roller 100. The housing is provided with a printing paper inlet 92 and a printing paper outlet 91, which define a printing paper transport path within the housing.

[0122] The cooling roller 100 is arranged on the printing paper transmission path and both ends of the cooling roller 100 are rotatably connected to the shell; at least one cooling roller 100 is arranged along the first direction, and at least two cooling rollers 100 are arranged along the second direction, and the cooling rollers 100 in the first direction and the cooling rollers 100 in the second direction are staggered; the first direction and the second direction are parallel and have a spacing, and the spacing is smaller than the diameter of the cooling roller 100.

[0123] The first and second directions are parallel and spaced apart, with the spacing being smaller than the diameter of the cooling roller 100. Overlapping the cooling rollers 100 in the first and second directions increases the contact area between the cooling rollers 100 and the printing paper. In other words, the wrap angle between the printing paper and the cooling rollers 100 is increased, thereby improving heat exchange efficiency. Furthermore, this arrangement of the cooling rollers 100 improves space utilization within the housing, allowing for an increased number of cooling rollers 100, further enhancing heat exchange efficiency.

[0124] It should be noted that the first direction and the second direction are parallel to the center line of the printing paper transmission path, and the center line of the cooling roller 100 is arranged perpendicular to the center line of the printing paper transmission path.

[0125] The first direction may be above the second direction, or the first direction may be below the second direction.

[0126] It should be noted that the first connection portion 32 of the cooling roller 100 is disposed through the shell and is rotatably connected to the shell. For example, the first connection portion 32 is rotatably connected to the shell via a bearing.

[0127] In an optional embodiment, the housing includes a frame 50 and a protective cover 60 .

[0128] like Figure 6 and Figure 7 As shown, the frame 50 includes a bottom plate 51, a first side plate 52, a second side plate 53, and support legs 70. The two first side plates 52 are arranged side by side and spaced apart. The first side plates 52 are arranged perpendicular to the top surface of the bottom plate 51 and are securely connected to the bottom plate 51. The two second side plates 53 are arranged side by side and spaced apart. The second side plates 53 are arranged perpendicular to the top surface of the bottom plate 51 and are securely connected to the bottom plate 51. The two ends of the second side plates 53 are securely connected to the two first side plates 52, respectively. The bottom plate 51, the first side plate 52, and the second side plate 53 define a cooling cavity for accommodating the cooling roller 100. The first end of the support leg 70 is securely connected to the bottom plate 51, and the second end of the support leg 70 is used to contact the ground.

[0129] The bottom plate 51 is a circular plate or a polygonal plate. For example, in this embodiment, the bottom plate 51 is a rectangular plate.

[0130] The first side plate 52 and the second side plate 53 can be an integral structure with the bottom plate 51, for example, formed by bending a piece of iron plate; or the first side plate 52 and the second side plate 53 are fastened to the bottom plate 51 by welding.

[0131] The first side plate 52 and the second side plate 53 are both polygonal in shape. For example, the first side plate 52 is rectangular in shape, and the second side plate 53 is rectangular in shape.

[0132] It should be noted that the frame 50 can also remove the bottom plate 51 and only include the first side plate 52 and the second side plate 53. The first side plate 52 and the second side plate 53 constitute a frame structure with a rectangular cross-section. Adjustment holes are provided at both ends of the first side plate 52 and pass through the first side plate 52. The first end of the support foot 70 passes through the first side plate 52 and is located in the adjustment hole.

[0133] like Figure 7 As shown, the support foot 70 includes a support base 71 and a support screw 72. The support screw 72 is arranged perpendicular to the support base 71, and the first end of the support screw 72 is fastened to the top surface of the support base 71. The second end of the support screw 72 is disposed through the base plate 51 and is threadedly connected to the base plate 51. The support base 71 is a circular plate or a polygonal plate. The support screw 72 is welded or threadedly connected to the support base 71.

[0134] It should be noted that the support screw 72 is threadedly connected to the bottom plate 51 so that the distance between the bottom plate 51 and the ground is adjustable.

[0135] The first end of the protective cover 60 is rotatably connected to one of the first side panels 52 and is used to cover the cooling cavity; a gap is formed between the top surface of the second side panel 53 and the bottom surface of the protective cover 60 to form a printing paper outlet 91 or a printing paper inlet 92.

[0136] The protective cover 60 is provided to prevent impurities such as water vapor or dust in the air from entering the cooling cavity. In addition, the protective cover 60 is rotatably connected to the first side plate 52 to facilitate maintenance of the temperature control device.

[0137] Schematically, the protective cover 60 is rotatably connected to the first side panel 52 via a hinge. The hinge includes a first hinge plate, a second hinge plate, and a hinge axis. The first end of the first hinge plate is fastened to the protective cover 60, and the second end of the second hinge plate is fastened to the first side panel 52. The first hinge plate is hinged to the second hinge plate via the hinge axis.

[0138] The shape of the printing paper outlet 91 or the printing paper inlet 92 is polygonal, which is determined by the shape of the top surface of the second side panel 53. In this embodiment, the shape of the second side panel 53 is rectangular. Correspondingly, the current shape of the printing paper outlet 91 or the printing paper inlet 92 is rectangular.

[0139] It should be noted that, since the second side panel 53 and the protective cover 60 define the printing paper outlet 91 or the printing paper inlet 92 , the height of the first side panel 52 is greater than the height of the second side panel 53 .

[0140] like Figure 6 As shown, the protective cover 60 is a flat plate structure and its longitudinal cross-section can be arcuate or polygonal. For example, the protective cover 60 includes a first rectangular plate 61 and a second rectangular plate 62. The first end of the first rectangular plate 61 is fastened to the first end of the second rectangular plate 62; the first rectangular plate 61 is arranged perpendicular to the second rectangular plate 62; and the second end of the first rectangular plate 61 is rotatably connected to the first side plate 52.

[0141] The bottom surface of the first rectangular plate 61 , the top surface of the second side plate 53 , and the side surface of the first side plate 52 jointly define a printing paper outlet 91 or a printing paper inlet 92 .

[0142] It should be noted that the length of the first rectangular plate 61 is greater than the length of the bottom plate 51 , so that the second rectangular plate 62 can cover the portion of the first connecting portion 32 located outside the cooling cavity.

[0143] When the first rectangular plate 61 is rotatably connected to the first side plate 52 via the hinge, the first end of the first hinge plate is firmly connected to the first rectangular plate 61 .

[0144] When the protective cover 60 is opened, a support mechanism can be provided to support the protective cover 60 to prevent the protective cover 60 from rotating. Figure 5 As shown, schematically, the support mechanism includes a gas spring 63 and two hinge blocks, which are respectively fastened to the inner side of the first rectangular plate 61 and the inner side of the first side plate 52, and the two ends of the gas spring 63 are respectively hinged to the two hinge blocks.

[0145] The hinge block can be fastened to the first side plate 52 or the first rectangular plate 61 by welding.

[0146] like Figure 5 As shown, optionally, two paper guide rollers 81 are further included. The two paper guide rollers 81 are arranged on the printing paper transmission path and are located in the shell. The two paper guide rollers 81 are respectively arranged close to the printing paper outlet 91 and the printing paper inlet 92. In other words, all the cooling rollers 100 are located between the two paper guide rollers 81.

[0147] It should be noted that both ends of the paper guide roller 81 pass through the two first side plates 52 and are rotatably connected to the first side plates 52. For example, the paper guide roller 81 is rotatably connected to the first side plates 52 via bearings. One end of the paper guide roller 81 is transmission-connected to the power device.

[0148] Figure 8 It is a left side view of the temperature control device of this embodiment.

[0149] like Figure 5-Figure 8 As shown, in an optional embodiment, a rotary joint 82 is further included, through which the first connection portion 32 is connected to an external water source or a water tank.

[0150] It should be noted that the rotary joint 82 can be any structure known in the art. For example, the rotary joint 82 includes an outer shell, a rotary bearing, and a sealing cover. A connecting cavity extends through the outer shell, the rotary bearing is securely mounted within the connecting cavity, and the first connecting portion 32 is inserted into and securely connected to the rotary bearing. The sealing cover is fitted over the first connecting portion 32 and securely connected to the outer shell.

[0151] The outer shell is shaped like a cylinder.

[0152] The current status of the sealing cover is annular.

[0153] like Figure 5-Figure 8 As shown, in an optional embodiment, a waterway accessory 83 is further included, and the waterway accessory 83 is used to centrally connect multiple rotary joints 82.

[0154] The water channel accessory 83 includes a valve body 831 having a water channel cavity, a first pipe joint 832 and multiple second pipe joints 833. The valve body 831 is provided with a first through hole and a second through hole connected to the water channel cavity. The first end of the first pipe joint 832 is inserted into the first through hole and is fastened to the valve body 831. The first end of the second pipe joint 833 is inserted into the second through hole and is fastened to the valve body 831. The second end of the second pipe joint 833 is connected to the rotary joint 82 through a pipeline.

[0155] The valve body 831 can be fastened to the outer wall of the second side plate 53 .

[0156] The valve body 831 is in the shape of a rectangular flat plate.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling roller, characterized in that: It includes inner roller, outer roller and end cover; The outer roller is sleeved on the inner roller; At least one cooling water channel extending along the axis of the inner roller is provided on the outer wall of the inner roller, a first receiving groove is provided on the end surface of both ends of the inner roller, and a flow gap connecting the first receiving groove and the cooling water channel is provided on both ends of the inner roller, and the width of the flow gap is greater than the width of the cooling water channel; The end cover includes a first main body portion, a first connecting portion and a connecting flow channel; The first end of the first connecting portion is fastened to the first main body portion, the second end of the first connecting portion is used to be rotatably connected to the housing of the temperature control device, and the first main body portion and the first connecting portion are integrally formed; The first main body is covered on the first receiving groove and is statically sealed with the outer roller; The connecting flow channel includes a first part and a second part; The first portion is disposed in the first main body and is used to communicate with the first receiving groove; The second portion is disposed in the first connecting portion and is used to communicate with an external water source; The inner roller includes a hollow tube portion and two barrier portions; The two blocking portions are spaced apart and arranged inside the tube body along the length direction of the tube body and are fastened to the tube body, and the outer sides of the blocking portions and the tube body define the first receiving groove; The flow gap and the cooling water channel are arranged on the tube body.

2. The cooling roller according to claim 1, wherein The first main body portion is a circular plate or a polygonal plate.

3. The cooling roller according to claim 1, wherein The first main body is tightly connected to the outer roller and the first main body abuts against the inner roller; or, The first main body is tightly connected to the inner roller and abuts against the outer roller.

4. The cooling roller according to claim 1, wherein The first connecting portion includes a first shaft segment, a second shaft segment and a third shaft segment that are coaxial and sequentially arranged; The end of the first shaft segment is firmly connected to the first main body; The outer diameter of the first shaft segment is greater than the outer diameter of the second shaft segment, and the outer diameter of the second shaft segment is greater than the outer diameter of the third shaft segment.

5. The cooling roller according to claim 1, wherein The outer roller includes a second main body portion and two second connecting portions; The second main body is sleeved on the inner roller; The two second connection parts are respectively sleeved on both ends of the second main body and are firmly connected to the second main body. The second connection parts are in surface contact with the first main body and are firmly connected.

6. The cooling roller according to claim 5, characterized in that The second main body is a tubular structure, and the second connecting portion is a circular ring; or The second main body portion is a tubular structure, and the second connecting portion is a polygonal ring.

7. The cooling roller according to claim 5 or 6, characterized in that: Also includes a sealing ring groove and a sealing ring; The sealing ring groove is provided on the contact surface between the second connecting portion and the first main body portion; Part of the sealing ring is embedded in the sealing ring groove.

8. The cooling roller according to claim 1, wherein The cooling water channel is a spiral water channel arranged around the axis of the inner roller, and the rotation direction of the spiral water channel is the same as the rotation direction of the outer roller.

9. A temperature control device, characterized in that: comprising a shell and the cooling roller according to any one of claims 1 to 8; The housing is provided with a printing paper inlet and a printing paper outlet, wherein a printing paper transmission path located inside the housing is defined between the printing paper inlet and the printing paper outlet; The cooling roller is arranged on the printing paper transmission path and both ends of the cooling roller are rotatably connected to the housing; At least one cooling roller is arranged along the first direction, and at least two cooling rollers are arranged along the second direction, and the cooling rollers in the first direction and the cooling rollers in the second direction are arranged alternately; The first direction and the second direction are parallel and have a distance therebetween, and the distance is smaller than a diameter of the cooling roller.

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