Calender and production line

Abstract

The utility model discloses a calender and a production line. The calender comprises a bearing bush, a rotating shaft and an oil nozzle, the bearing bush defines a mounting hole, and an oil passing hole communicated with the mounting hole is formed in the peripheral wall of the bearing bush. The rotating shaft is suitable for penetrating through the mounting hole. The oil nozzle is detachably connected with the bearing bush and communicates with the oil passing hole so that lubricating oil can be conveyed into the mounting hole. The production line comprises a calender. According to the scheme, lubricating oil can be directly conveyed into the bearing bush, the problems of insufficient oil supply and untimely oil supply are effectively solved, friction between the bearing bush and the rotating shaft is reduced, the bearing bush is prevented from being greatly abraded and deformed, the service life of the bearing bush is prolonged, and it is guaranteed that the calender can continuously and normally operate.

Description

Technical Field

[0001] The utility model relates to the technical field of calenders, in particular to a calender and a production line. Background Art

[0002] A calender can be used to process glass, metal, plastic, or rubber, among others. The calender includes a rotating shaft and a pressure roller, and the rotating shaft can drive the pressure roller to rotate. In the prior art, the calender also includes a bearing, a base, and an oil nozzle. The base is used to support the bearing, and the rotating shaft is passed through the bearing. The oil nozzle is connected to the base, and the bearing can swing relative to the base to allow lubricating oil to penetrate from the base into the bearing, thereby achieving lubrication. However, there is a gap between the base and the bearing, which can lead to insufficient oil supply to the bearing or untimely oil supply, resulting in greater friction between the bearing and the rotating shaft, causing significant wear and deformation of the bearing. Utility Model Content

[0003] The main purpose of the utility model is to provide a calender and a production line, aiming to solve the technical problem of significant wear and deformation of bearing bushes.

[0004] To achieve the above-mentioned purpose, the first embodiment of the present invention provides a calender, which includes:

[0005] A bearing shell defines a mounting hole, wherein the peripheral wall of the bearing shell is provided with an oil hole communicating with the mounting hole;

[0006] A rotating shaft, adapted to be inserted into the mounting hole;

[0007] An oil nozzle is detachably connected to the bearing shell, and the oil nozzle is communicated with the oil hole to transport lubricating oil to the mounting hole.

[0008] In some embodiments, along a direction perpendicular to the axis of the mounting hole, the oil nozzle is at least partially disposed in the oil hole and is spaced apart from the inner wall of the bearing shell.

[0009] In some embodiments, the oil nozzle is threadedly connected to the oil hole along a direction perpendicular to the axis of the mounting hole.

[0010] In some embodiments, the bearing includes an inner liner and a bearing sleeve arranged around the outer periphery of the inner liner. The peripheral wall of the bearing sleeve is provided with a first opening, and the peripheral wall of the inner liner is provided with a second opening. The first opening is connected to the second opening and jointly defines the oil hole.

[0011] In some embodiments, along a direction perpendicular to the axis of the mounting hole, the oil nozzle is disposed in the first opening and is spaced apart from the second opening.

[0012] In some embodiments, the calender includes an oil supply part and an oil guide pipe, the oil supply part is located outside the bearing shell, and both ends of the oil guide pipe are respectively connected to the oil supply part and the oil nozzle to transport the lubricating oil in the oil supply part to the oil nozzle.

[0013] In some embodiments, the oil supply portion includes an air inlet, an air outlet, an oil inlet, and an oil outlet arranged at intervals, the air inlet is connected to the air outlet, the oil inlet is connected to the oil outlet, and the oil outlet and the air outlet are both connected to the oil guide pipe.

[0014] In some embodiments, the calender includes a base located at the bottom of the bearing shell. Along the vertical direction perpendicular to the axis of the mounting hole, the bearing shell includes a first shell body located on the lower side and a second shell body located on the upper side of the first shell body, and the oil hole is provided in the first shell body.

[0015] In some embodiments, the first shoe body includes a plurality of oil holes arranged at intervals, wherein one of the oil holes is suitable for the oil nozzle to pass through, and another of the oil holes connects the mounting hole and the base.

[0016] A second embodiment of the present invention provides a production line, comprising the calender as described in the above embodiment.

[0017] Compared with the prior art, the beneficial effects of the present invention include:

[0018] In the technical solution of the present invention, the calender includes a bearing, a rotating shaft and an oil nozzle. The bearing defines a mounting hole, and the peripheral wall of the bearing is provided with an oil hole connected to the mounting hole. The rotating shaft is suitable for being inserted into the mounting hole. In the prior art, the oil nozzle of the calender is connected to the base, and the bearing can swing relative to the base so that the lubricating oil penetrates from the base into the bearing, thereby achieving lubrication. However, there is a gap between the base and the bearing, which will lead to insufficient oil supply to the bearing or untimely oil supply, resulting in greater friction between the bearing and the rotating shaft, causing significant wear and deformation of the bearing. The oil nozzle of this solution is detachably connected to the bearing, and the oil nozzle is connected to the oil hole, that is, it can directly deliver lubricating oil to the mounting hole of the bearing, effectively alleviating the problems of insufficient oil supply and untimely oil supply, reducing friction between the bearing and the rotating shaft, preventing significant wear and deformation of the bearing, extending the service life of the bearing, and ensuring that the calender can continue to operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of a calender in one embodiment of the present invention, showing a bearing, a rotating shaft, an oil nozzle, an oil supply portion, and an oil guide pipe;

[0021] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle, wherein the first opening and the second opening are shown.

[0022] Description of Figure Numbers:

[0023] Calender 10;

[0024] Bearing 100; mounting hole 110; axis 111; oil hole 120; liner 130; second opening 131; bushing 140; first opening 141; first bushing 150; second bushing 160;

[0025] Rotating shaft 200;

[0026] Nozzle 300;

[0027] Oil supply unit 400; air inlet 410; air outlet 420; oil inlet 430; oil outlet 440;

[0028] Oil guide pipe 500;

[0029] Vertical Z.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0032] A calender consists of a rotating shaft and rollers, which drive the rollers. Conventional calenders also include a bearing, a base, and an oil nozzle. The base supports the bearing, and the rotating shaft passes through the bearing. The oil nozzle is connected to the base, allowing the bearing to swing relative to the base, allowing lubricating oil to penetrate from the base into the bearing, thereby achieving lubrication. However, a gap between the base and the bearing can lead to insufficient or untimely oil supply to the bearing, resulting in significant friction between the bearing and the rotating shaft, causing significant wear and deformation of the bearing.

[0033] In view of this, the first embodiment of the present invention proposes a calender 10, which can effectively alleviate the situation where the bearing 100 is greatly worn and deformed. It should be noted that the calender 10 can be used to process glass, metal, plastic or rubber, etc. The embodiment of the present application takes the calender 10 used to process glass as an example. Figure 1 and Figure 2 The calender 10 according to the embodiment of the present application is introduced. Specifically, the calender 10 includes a bearing 100, a rotating shaft 200 and an oil nozzle 300.

[0034] Reference Figure 1 The bearing shell 100 defines a mounting hole 110 for mounting the rotating shaft 200. The specific structure and size of the mounting hole 110 can be adapted to the layout of the rotating shaft 200. The peripheral wall of the bearing shell 100 is provided with an oil hole 120. The oil hole 120 is connected to the mounting hole 110, that is, lubricating oil can pass through the oil hole 120 into the mounting hole 110 to achieve lubrication of the rotating shaft 200 and the bearing shell 100.

[0035] Reference Figure 1 The rotating shaft 200 is used to drive the pressing roller to rotate to achieve calendering. The rotating shaft 200 can be inserted into the mounting hole 110. In some embodiments, the rotating shaft 200 can only partially penetrate the mounting hole 110. In other embodiments, the rotating shaft 200 can fully penetrate the mounting hole 110. The specific assembly arrangement of the rotating shaft 200 and the mounting hole 110 can be determined according to actual conditions.

[0036] Reference Figure 1 and Figure 2 , the oil nozzle 300 is used for oil supply. The oil nozzle 300 is detachably connected to the bearing 100, so the oil nozzle 300 or the bearing 100 can be replaced according to actual conditions, so as to meet the calendering requirements of various working conditions and facilitate daily maintenance of the calender 10. It should be noted that in some embodiments, the oil nozzle 300 can be connected to the oil hole 120 of the bearing 100. In other embodiments, the oil nozzle 300 can be connected to a position of the bearing 100 that is spaced apart from the oil hole 120. The specific connection position of the oil nozzle 300 on the bearing 100 can be determined according to actual conditions. The embodiment of the present application is described by taking the oil nozzle 300 connected to the oil hole 120 of the bearing 100 as an example. In addition, the oil nozzle 300 is connected to the oil hole 120, that is, the lubricating oil can be directly delivered to the mounting hole 110 through the oil nozzle 300, so as to achieve effective lubrication of the bearing 100 and the rotating shaft 200.

[0037] In the technical solution of the present invention, the calender 10 includes a bearing 100, a rotating shaft 200 and an oil nozzle 300. The bearing 100 defines a mounting hole 110, and the peripheral wall of the bearing 100 is provided with an oil hole 120 connected to the mounting hole 110. The rotating shaft 200 is suitable for being inserted into the mounting hole 110. In the prior art, the oil nozzle of the calender is connected to the base, and the bearing can be shaken relative to the base so that the lubricating oil penetrates from the base into the bearing, thereby achieving lubrication. However, there is a gap between the base and the bearing, which will lead to insufficient oil supply to the bearing or untimely oil supply, resulting in greater friction between the bearing and the rotating shaft, causing significant wear and deformation of the bearing. The oil nozzle 300 of this solution is detachably connected to the bearing 100, and the oil nozzle 300 is connected to the oil hole 120, that is, it can directly deliver lubricating oil to the mounting hole 110 of the bearing 100, effectively alleviating the problems of insufficient oil supply and untimely oil supply, reducing the friction between the bearing 100 and the rotating shaft 200, preventing the bearing 100 from being significantly worn and deformed, extending the service life of the bearing 100, and ensuring that the calender 10 can continue to operate normally.

[0038] The following describes the specific connection arrangement of the oil nozzle 300 and the oil hole 120 in some embodiments. For ease of description and understanding, it is assumed that the mounting hole 110 has an axis 111, referring to Figure 1 In the direction perpendicular to the axis 111 of the mounting hole 110, the oil nozzle 300 is at least partially disposed in the oil hole 120 and is spaced from the inner wall of the bearing shell 100. Figure 1 In some embodiments, the oil nozzle 300 can be arranged through the oil hole 120 along a vertical direction Z that is perpendicular to the axis 111 of the mounting hole 110. In other embodiments, the oil nozzle 300 can be arranged through the oil hole 120 along a direction that is oblique to the vertical direction Z. The specific arrangement direction of the oil nozzle 300 can be determined according to actual conditions.

[0039] In this embodiment, the oil nozzle 300 is inserted into the oil hole 120, which improves the reliability of the assembly connection between the oil nozzle 300 and the bearing shell 100, thereby ensuring the stability of the oil supply from the oil nozzle 300 and ensuring the lubrication effect. The gap between the oil nozzle 300 and the inner wall of the bearing shell 100 can be understood as the oil nozzle 300 not completely passing through the oil hole 120. This prevents the oil nozzle 300 from extending into the mounting hole 110 and interfering with the rotation of the shaft 200, thereby ensuring the continuous normal operation of the calender 10.

[0040] Reference Figure 2, the specific connection settings of the oil nozzle 300 and the oil hole 120 in some embodiments are introduced below. The oil nozzle 300 is threadedly connected to the oil hole 120 of the bearing shell 100 along the direction perpendicular to the axis 111 of the mounting hole 110. Specifically, the outer peripheral wall of the oil nozzle 300 can be provided with threads, and the inner peripheral wall of the part of the hole body of the oil hole 120 away from the mounting hole 110 can be set as a threaded hole. The oil nozzle 300 can be screwed to be threadedly connected to the oil hole 120. This solution can effectively improve the stability of the assembly connection between the oil nozzle 300 and the oil hole 120, and the overall oil supply structure is simple, which is convenient for assembling and disassembling the oil nozzle 300.

[0041] It should be noted that in some embodiments, the oil nozzle 300 can be screwed to the bearing shell 100. In other embodiments, the oil nozzle 300 can be bolted to the bearing shell 100. In other embodiments, the oil nozzle 300 can be pinned to the bearing shell 100. It is understood that the oil nozzle 300 needs to be connected to the oil hole 120. The specific connection arrangement between the oil nozzle 300 and the bearing shell 100 can be determined according to actual conditions. The embodiment of the present application takes the oil nozzle 300 being threadedly connected to the oil hole 120 of the bearing shell 100 as an example for explanation.

[0042] Reference Figure 1 and Figure 2 , the specific structure of the oil hole 120 of some embodiments is introduced below. Specifically, the bearing 100 includes a liner 130 and a sleeve 140, and the sleeve 140 can be arranged around the outer periphery of the liner 130. The liner 130 is a gasket material inside the bearing 100. The liner 130 can reduce friction, improve wear resistance, and protect the rotating shaft 200 and the sleeve 140. The liner 130 can be made of cast iron, copper alloy or composite material. The sleeve 140 can be made of cast iron or cast steel. The sleeve 140 needs to have good strength and rigidity. The sleeve 140 can bear the weight of the rotating shaft 200 and ensure the stable operation of the rotating shaft 200.

[0043] Reference Figure 2 , the peripheral wall of the sleeve 140 is provided with a first opening 141, and the first opening 141 can be adapted to the arrangement of the oil nozzle 300. The peripheral wall of the liner 130 is provided with a second opening 131. In some embodiments. The structure and size of the second opening 131 can be the same as those of the first opening 141. In other embodiments, the structure and size of the second opening 131 can be different from those of the first opening 141. Furthermore, the opening area of the second opening 131 can be larger than or smaller than the opening area of the first opening 141. The specific arrangement of the second opening 131 and the first opening 141 can depend on actual conditions. It should be noted that the first opening 141 is connected to the second opening 131, that is, the lubricating oil in the oil nozzle 300 can enter the second opening 131 from the first opening 141, and enter the mounting hole 110 through the second opening 131.

[0044] The first opening 141 of this solution is connected to the second opening 131 and jointly defines the oil hole 120, which can ensure the lubricating effect of the lubricating oil on the bearing 100 and the rotating shaft 200, reduce the friction between the lining 130 of the bearing 100 and the rotating shaft 200, prevent the lining 130 from being significantly worn and deformed, reduce the replacement frequency of the lining 130, save the production cost of the calender 10, and ensure the production efficiency of the calender 10.

[0045] Reference Figure 1 and Figure 2 , the following describes some embodiments of the specific connection structure of the oil nozzle 300 and the bearing 100. For ease of description and understanding, it is assumed that the mounting hole 110 has an axis 111, referring to Figure 1 The axis 111 of the mounting hole 110 points to the front-back direction and is in a point shape. In a direction perpendicular to the axis 111 of the mounting hole 110, the nozzle 300 is inserted into the first opening 141 and is spaced apart from the second opening 131. Figure 1 In some embodiments, the oil nozzle 300 may be provided through the first opening 141 along a vertical direction Z perpendicular to the axis 111 of the mounting hole 110. In other embodiments, the oil nozzle 300 may be provided through the oil hole 120 along a direction oblique to the vertical direction Z. The specific direction of the oil nozzle 300 may be determined according to actual conditions.

[0046] It should be noted that in some embodiments, the nozzle 300 may partially penetrate the first opening 141. In other embodiments, the nozzle 300 may completely penetrate the first opening 141. The specific penetration depth of the nozzle 300 within the first opening 141 can be determined based on actual conditions. In some embodiments of the present application, the nozzle 300 partially penetrates the first opening 141 as an example.

[0047] The oil nozzle 300 of this solution is penetrated by the first opening 141 and is spaced apart from the second opening 131, which can not only ensure the stability of the assembly connection between the oil nozzle 300 and the bearing 100, improve the reliability of the oil supply of the oil nozzle 300, but also facilitate the replacement of the liner 130 and prevent the liner 130 from being deformed and causing it to be stuck with the oil nozzle 300.

[0048] Reference Figure 1 and Figure 2 The following describes the specific oil supply configurations of some embodiments. In some embodiments, the calender 10 includes an oil supply unit 400 and an oil guide pipe 500. The oil supply unit 400 is disposed outside the bearing 100, and the ends of the oil guide pipe 500 are connected to the oil supply unit 400 and the oil nozzle 300, respectively. This allows lubricating oil in the oil supply unit 400 to be transported to the oil nozzle 300 through the oil guide pipe 500 for oil supply.

[0049] Reference Figure 1The following describes the specific structure of the oil supply unit 400. In some embodiments, the oil supply unit 400 includes an air inlet 410, an air outlet 420, an oil inlet 430, and an oil outlet 440 arranged at intervals. The specific structure and location of the air inlet 410, the air outlet 420, the oil inlet 430, and the oil outlet 440 may be determined based on actual conditions.

[0050] It is understood that the air inlet 410 can be connected to the air outlet 420, and the oil inlet 430 can be connected to the oil outlet 440. Both the oil outlet 440 and the air outlet 420 are connected to the end of the oil guide tube 500 facing away from the oil nozzle 300. This allows lubricating oil to be delivered to the oil nozzle 300 under high pressure, providing lubrication for the rotating shaft 200 and the bearing 100. This solution effectively improves the reliability of lubricating oil delivery and ensures effective lubrication.

[0051] Reference Figure 1 and Figure 2 The specific location of the oil hole 120 in some embodiments is described below. The calender 10 includes a base, which is located at the bottom of the bearing 100. The base can be used to support the bearing 100. Along the vertical direction Z perpendicular to the axis 111 of the mounting hole 110, refer to Figure 1 In the vertical direction, that is, in the vertical direction, the bearing 100 includes a first bearing 150 located below and a second bearing 160 located above the first bearing 150. Specifically, in some embodiments, the structure of the first bearing 150 can be identical to that of the second bearing 160. In other embodiments, the structure of the first bearing 150 can be different from that of the second bearing 160. Some embodiments of the present application are described using the example that the first bearing 150 and the second bearing 160 have the same structure. The oil hole 120 can be provided in the first bearing 150.

[0052] The oil hole 120 of this solution is arranged at the first bushing 150 at the bottom of the bearing bush 100, which is convenient for lubricating oil to penetrate the base, thereby reducing the friction between the base and the bearing bush 100 and ensuring the stability of the base supporting the bearing bush 100.

[0053] Reference Figure 1 , the specific setting of the oil hole 120 is introduced below. In some embodiments, the first tile body 150 includes multiple oil holes 120 arranged at intervals. The specific number of the oil holes 120 can be determined according to the actual situation. The embodiment of the present application takes the setting of three oil holes 120 as an example for explanation. Among them, one oil hole 120 can be provided for the oil nozzle 300 to pass through, and the other oil hole 120 can connect the mounting hole 110 and the base. Figure 1In this embodiment, the oil supply nozzle 300 is provided through the left oil hole 120, and the two right oil holes 120 connect the mounting hole 110 and the base. In this embodiment, some of the lubricating oil in the bearing 100 can pass through some of the oil holes 120 to soak the base, ensuring lubrication between the base and the bearing 100.

[0054] The second embodiment of the present invention proposes a production line, which includes a calender 10 as in the above embodiment. The production line of this solution can be used to produce glass, metal, plastic or rubber, etc. The embodiment of this application is described by taking the production line for producing glass as an example. The calender 10 of this solution includes a bearing 100, a rotating shaft 200 and an oil nozzle 300. The bearing 100 defines a mounting hole 110, and the peripheral wall of the bearing 100 is provided with an oil hole 120 connected to the mounting hole 110. The rotating shaft 200 is suitable for being passed through the mounting hole 110. In the prior art, the oil nozzle of the calender is connected to the base, and the bearing can swing relative to the base so that the lubricating oil penetrates from the base into the bearing, thereby achieving lubrication. However, there is a gap between the base and the bearing, which will lead to insufficient oil supply to the bearing or untimely oil supply, resulting in greater friction between the bearing and the rotating shaft, causing the bearing to be significantly worn and deformed. The oil nozzle 300 of this solution is detachably connected to the bearing 100, and the oil nozzle 300 is connected to the oil hole 120, that is, it can directly deliver lubricating oil to the mounting hole 110 of the bearing 100, effectively alleviating the problems of insufficient oil supply and untimely oil supply, reducing the friction between the bearing 100 and the rotating shaft 200, preventing the bearing 100 from being significantly worn and deformed, extending the service life of the bearing 100, and ensuring that the calender 10 can continue to operate normally.

[0055] It should be noted that if any embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative positional relationships and movement of various components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. When a directional reference is introduced in a specific embodiment, unless the direction is specifically limited to unidirectional, the direction can be unidirectional or bidirectional (two parallel and opposite directions). The specific unidirectional or bidirectional is based on the ability of ordinary technicians in this field to implement. When the directional reference is bidirectional, it should be considered that two different embodiments are described simultaneously.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or", "and / or" or "and / or" appear in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. Calender, characterized in that, The calender comprises: A bearing shell defines a mounting hole, wherein the peripheral wall of the bearing shell is provided with an oil hole communicating with the mounting hole; A rotating shaft, adapted to be inserted into the mounting hole; An oil nozzle is detachably connected to the bearing shell, and the oil nozzle is communicated with the oil hole to transport lubricating oil to the mounting hole.

2. The calender according to claim 1, wherein Along a direction perpendicular to the axis of the mounting hole, the oil nozzle is at least partially disposed in the oil hole and is spaced apart from the inner wall of the bearing bush.

3. The calender according to claim 1, wherein The oil nozzle is threadedly connected to the oil hole along a direction perpendicular to the axis of the mounting hole.

4. The calender according to claim 2, wherein: The bearing shell includes an inner liner and a bushing sleeve arranged around the outer periphery of the inner liner. The peripheral wall of the bushing sleeve is provided with a first opening, and the peripheral wall of the inner liner is provided with a second opening. The first opening is connected to the second opening and jointly defines the oil hole.

5. The calender according to claim 4, characterized in that Along a direction perpendicular to the axis of the mounting hole, the oil nozzle is penetrated into the first opening and spaced apart from the second opening.

6. The calender according to claim 1, wherein The calender includes an oil supply part and an oil guide pipe. The oil supply part is located outside the bearing shell. Both ends of the oil guide pipe are respectively connected to the oil supply part and the oil nozzle to transport the lubricating oil of the oil supply part to the oil nozzle.

7. The calender according to claim 6, wherein The oil supply portion includes an air inlet, an air outlet, an oil inlet and an oil outlet arranged at intervals. The air inlet is connected to the air outlet, the oil inlet is connected to the oil outlet, and the oil outlet and the air outlet are both connected to the oil guide pipe.

8. The calender according to claim 1, wherein The calender includes a base located at the bottom of the bearing shell. Along the vertical direction perpendicular to the axis of the mounting hole, the bearing shell includes a first shell body located at the lower side and a second shell body located on the upper side of the first shell body. The oil hole is provided in the first shell body.

9. The calender according to claim 8, characterized in that The first tile body includes a plurality of oil holes arranged at intervals, wherein one of the oil holes is suitable for the oil nozzle to pass through, and another oil hole is connected with the mounting hole and the base.

10. Production line, characterized in that, The production line comprises the calender according to any one of claims 1 to 9.

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