Rotary joint for cooling type roller

Abstract

The utility model provides a rotary joint for a cooling type roller. The rotary joint comprises a shell and a rotary pipe inserted and mounted in the shell, an end cover is arranged at the left end of the shell, and a tail cover is arranged at the right end of the shell. A left sealing outer cone is arranged on the rotating pipe, a left sealing ring is arranged on the inner side of the end cover, the right portion of the rotating pipe is sleeved with a supporting pipe, a right sealing outer cone is arranged on the supporting pipe, a right sealing ring is arranged at the right end of an inner cavity of the shell, and a spring is arranged between the left sealing outer cone and the right sealing outer cone. The spring pushes the rotating pipe and the supporting pipe to the two sides correspondingly, so that the left sealing outer cone and the left sealing ring are attached, and the right sealing outer cone and the right sealing ring are attached. According to the rotary joint, water feeding and water returning can be completed on one side of the roller, the cooling efficiency is high, water feeding and water returning can be completed on one side of the roller, the structure is simple, and wiring is convenient.

Description

Technical Field

[0001] The utility model relates to the field of vehicle body manufacturing, in particular to a rotary joint for a cooling roller. Background Art

[0002] During the car body manufacturing process, workpieces usually need to be straightened at the back-burning station on the welding conveyor line. However, the workpiece temperature is relatively high at this time. The high-temperature workpiece will be affected by the components on the conveyor line, which may cause premature aging or even damage to peripheral equipment and devices.

[0003] In the prior art, cooling rollers are used to solve the above problems. However, in order to achieve the effect of internal cooling water circulation when cooling the rollers, rotary joints are usually installed on both sides of the rollers, with water entering on one side and returning on the other side to achieve circulation. The wiring of this structure is complicated, and the roller installation occupies a large space, making the equipment layout more inconvenient. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing method of installing rotary joints on both sides of the roller to circulate cooling water has complex wiring and occupies a large space. The utility model provides a rotary joint for cooling rollers to solve the above problem.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a cooling roller for a back-firing station, comprising a roller, support parts are respectively provided on both sides of the roller, the roller is a hollow structure, and reversing joints are provided at the left and right ends of the inner cavity of the roller; a cooling chamber is formed in the inner cavity of the roller between the two reversing joints; the reversing joint includes a guide hole provided in the middle, a guide chamber formed by enclosing the inner cavity wall of the roller, an inner flow hole connecting the guide hole and the guide chamber, and an outer flow hole connecting the guide chamber and the cooling chamber; a mounting hole is provided in the middle of the right support part, the mounting hole is connected with the guide hole of the right reversing joint, and a water inlet pipe is inserted into the mounting hole, the water inlet pipe passes through the guide hole and the cooling chamber of the right reversing joint in sequence, and is inserted into the guide hole of the left reversing joint; a rotary joint is installed on the right support part, the water inlet end of the rotary joint is connected with the water inlet pipe, and the water return end of the rotary joint is connected with the mounting hole.

[0006] Furthermore: a middle partition is provided in the middle of the cooling cavity, and a water hole is provided on the middle partition.

[0007] Further: the rotary joint includes a shell and a rotating tube inserted and installed in the shell; the rotating tube rotates in the shell, and the left end of the shell is provided with an end cover and the right end is provided with a tail cover; a left sealing outer cone is provided on the rotating tube, the inner side of the end cover is provided with a left sealing ring that cooperates with the left sealing outer cone, a support tube is provided on the right outer sleeve of the rotating tube, a right sealing outer cone is provided at the right end of the inner cavity of the shell, and a right sealing ring that cooperates with the right sealing outer cone is provided, a spring is provided between the left sealing outer cone and the right sealing outer cone, the spring pushes the rotating tube and the support tube to both sides respectively, so that the left sealing outer cone and the left sealing ring are fitted and the right sealing outer cone and the right sealing ring are fitted; the return water end is provided on the shell, and the return water end is connected with the inner cavity of the rotating tube; the water inlet pipe passes through the inner cavity of the rotating tube and is inserted and installed on the tail cover, the water inlet end is provided on the tail cover, and the water inlet end is connected with the inner cavity of the water inlet pipe.

[0008] Furthermore: the contact surface between the right sealing outer cone and the right sealing ring is spherical, the rotating tube rotates in the support tube and moves axially, a radial hole is opened on the wall of the support tube, and the return water end is connected to the inner cavity of the rotating tube through the radial hole.

[0009] Furthermore: the left sealing ring and the right sealing ring are made of graphite.

[0010] The beneficial effect of the utility model is that the utility model is a cooling roller for the back-firing station. A cooling water circulation structure is set in the roller, and water is fed in and returned through a rotary joint. A single-layer cooling structure is adopted to timely cool the roller surface with cooling water, and water feeding and returning can be completed on one side of the roller. This method has high cooling efficiency and can complete water feeding and returning on a single side of the roller. The structure is simple and the wiring is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic structural diagram of a cooling roller used in a back-firing station according to the present invention;

[0013] Figure 2 It is a structural diagram of a rotary joint.

[0014] In the figure, 1 is the roller, 2 is the supporting part, 3 is the reversing joint, 4 is the cooling chamber, 5 is the guide hole, 6 is the guide chamber, 7 is the inner flow hole, 8 is the outer flow hole, 9 is the mounting hole, 10 is the water inlet pipe, 11 is the rotary joint, 12 is the water inlet end, 13 is the water return end, 14 is the middle partition, 15 is the water hole, 16 is the shell, 17 is the rotating tube, 18 is the end cover, 19 is the tail cover, 20 is the left sealing outer cone, 21 is the left sealing ring, 22 is the supporting tube, 23 is the right sealing outer cone, 24 is the right sealing ring, 25 is the spring, 26 is the radial hole. DETAILED DESCRIPTION

[0015] The following describes in detail embodiments of the present invention, 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 only to explain the present invention and are not to be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0017] In addition, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0018] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0019] like Figures 1 to 2 As shown, the utility model provides a cooling roller for a back-firing station, comprising a roller 1, with support portions 2 provided on both sides of the roller 1. The roller 1 is a hollow structure, and reversing joints 3 are provided at both left and right ends of the inner cavity of the roller 1.

[0020] In the inner cavity of the roller 1, a cooling cavity 4 is formed between the two reversing joints 3; the reversing joint 3 includes a guide hole 5 provided in the middle, a guide cavity 6 formed by being enclosed with the inner cavity wall of the roller 1, an inner through-hole 7 connecting the guide hole 5 and the guide cavity 6, and an outer through-hole 8 connecting the guide cavity 6 and the cooling cavity 4;

[0021] A mounting hole 9 is provided in the middle of the right support portion 2, and the mounting hole 9 is communicated with the guide hole 5 of the reversing joint 3 on the right side. A water inlet pipe 10 is inserted into the mounting hole 9, and the water inlet pipe 10 passes through the guide hole 5 and the cooling chamber 4 of the reversing joint 3 on the right side in sequence, and is inserted into the guide hole 5 of the reversing joint 3 on the left side; a rotary joint 11 is installed on the right support portion 2, and the water inlet end 12 of the rotary joint 11 is communicated with the water inlet pipe 10, and the return water end 13 of the rotary joint 11 is communicated with the mounting hole 9.

[0022] When the cooling roller 1 is used for back-burning correction of the workpiece, since the workpiece has a high temperature, it is necessary to use the cooling roller 1 to cool the workpiece during transportation to avoid the overall temperature increase caused by heat transfer, which may cause premature aging or even damage to peripheral equipment components.

[0023] The structure of the cooling type roller 1 used in this application is a single-layer structure, and its main working process is: cooling water is introduced into the water inlet pipe 10 through the water inlet end 12 of the rotary joint 11, and cooling water is introduced into the water inlet pipe 10. The cooling water directly enters the left reversing joint 3 through the water inlet pipe 10, first flows into the guide hole 5 of the left reversing joint 3, and enters the guide cavity 6 through the inner flow hole 7. The cooling water flowing into the guide cavity 6 flows into the cooling cavity 4 through the outer flow hole 8 to cool the roller 1.

[0024] The flow direction of the cooling water in the reversing joint 3 on the right is that the cooling water in the cooling chamber 4 flows into the guide chamber 6 in the reversing joint 3 on the right through the external flow hole 8, then flows into the guide hole 5 through the internal flow hole 7, and then flows into the mounting hole 9 connected thereto, and finally flows out through the return water end 13 of the rotary joint 11.

[0025] A middle partition 14 is provided in the middle of the cooling chamber 4 and is provided with a water hole 15. The middle partition 14 can separate the cooling chamber 4 into two left and right parts, which is conducive to forcing the cooling water in the cooling chamber 4 to flow in an orderly manner, forming a good convection effect. The middle partition 14 organizes the water flow state inside the cooling chamber 4 and improves the cooling effect on the roller 1.

[0026] The rotary joint 11 includes a shell 16 and a rotating tube 17 inserted and installed in the shell 16; the rotating tube 17 rotates in the shell 16, and the left end of the shell 16 is provided with an end cover 18 and the right end is provided with a tail cover 19; a left sealing outer cone 20 is provided on the rotating tube 17, and a left sealing ring 21 that cooperates with the left sealing outer cone 20 is provided on the inner side of the end cover 18; a support tube 22 is provided on the right outer portion of the rotating tube 17, and a right sealing outer cone 23 is provided on the support tube 22; a right sealing ring 24 that cooperates with the right sealing outer cone 23 is provided at the right end of the inner cavity of the shell 16, and a spring 25 is provided between the left sealing outer cone 20 and the right sealing outer cone 23, and the spring 25 pushes the rotating tube 17 and the support tube 22 to both sides respectively, so that the left sealing outer cone 20 and the left sealing ring 21 are fitted and the right sealing outer cone 23 and the right sealing ring 24 are fitted;

[0027] The return water end 13 is arranged on the shell 16, and the return water end 13 is communicated with the inner cavity of the rotating tube 17; the water inlet pipe 10 passes through the inner cavity of the rotating tube 17 and is inserted and installed on the tail cover 19, and the water inlet end 12 is arranged on the tail cover 19, and the water inlet end 12 is communicated with the inner cavity of the water inlet pipe 10.

[0028] The rotary joint 11 is provided with a water inlet end 12 and a water return end 13. During operation, the roller 1 drives the rotating tube 17 to rotate, and the rotating tube 17 and the support tube 22 rotate synchronously. The joint portion of the rotating tube 17 and the shell 16 is a dynamic sealing area. Under the pushing action of the spring 25, the left sealing outer cone 20 in the rotating state and the left sealing ring 21 in the static state maintain a sealed fit. In this way, the dynamic sealing structure can ensure that the cooling water will not leak out, thereby ensuring the reliability and stability of the dynamic seal.

[0029] The water inlet 12 of the rotary joint 11 delivers cooling water to the fixed water inlet pipe 10. The aforementioned dynamic seal arrangement then transfers the cooling water from the rotating roller 1 through the mounting hole 9 of the support 2, effectively allowing the cooling water to be input and output from the same side of the cooled roller 1. This approach facilitates simple piping, provides high dynamic seal reliability, and the hard seal structure of the spring 25 accommodates higher roller 1 speeds.

[0030] The contact surface between the right sealing outer cone 23 and the right sealing ring 24 is spherical in shape. The rotating tube 17 rotates in the support tube 22 and moves axially. A radial hole 26 is opened on the wall of the support tube 22. The return water end 13 is connected to the inner cavity of the rotating tube 17 through the radial hole 26.

[0031] The setting of the spherical contact support surface on the support tube 22 enables the support tube 22 to have the function of adaptively adjusting its position and posture following the rotating tube 17. Since the rotating tube 17 may have slight shaking during the rotation process due to deviations such as coaxiality and deflection of the rotating tube 17, the above structure can allow shaking to exist, thereby improving the overall sealing reliability.

[0032] The left sealing ring 21 and the right sealing ring 24 are made of graphite. Graphite has self-lubricating properties and can have strong wear resistance in a hard sealing structure, thereby increasing the service life of the seal.

[0033] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0034] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A rotary joint for a cooling roller, characterized in that: The invention comprises a housing (16) and a rotating tube (17) inserted and installed in the housing (16); the rotating tube (17) rotates in the housing (16); the left end of the housing (16) is provided with an end cover (18) and the right end is provided with a tail cover (19); the rotating tube (17) is provided with a left sealing outer cone (20); the inner side of the end cover (18) is provided with a left sealing ring (21) matched with the left sealing outer cone (20); the outer sleeve of the right part of the rotating tube (17) is provided with a support tube (22); the support tube (22) is provided with a support tube (23); the support tube (23) is provided with a support tube (24); the support tube (24) is provided with a support tube (25); the support tube (25) is provided with a support tube (26); the support tube (26) is provided with a support tube (27); the support tube (27) is provided with a support tube (28); the support tube (28) is provided with a support tube (29); the support tube (29) is provided with a support tube (21); the support tube (29) is provided with a support tube (21); the support tube (29) is provided with a support tube (29 ... 2) a right sealing outer cone (23) is provided on the upper portion, a right sealing ring (24) matched with the right sealing outer cone (23) is provided at the right end of the inner cavity of the shell (16), a spring (25) is provided between the left sealing outer cone (20) and the right sealing outer cone (23), and the spring (25) pushes the rotating tube (17) and the supporting tube (22) toward both sides, so that the left sealing outer cone (20) and the left sealing ring (21) are in contact with each other, and the right sealing outer cone (23) and the right sealing ring (24) are in contact with each other; The return water end (13) is arranged on the housing (16), and the return water end (13) is communicated with the inner cavity of the rotating tube (17); the water inlet pipe (10) passes through the inner cavity of the rotating tube (17) and is inserted and installed on the tail cover (19); the water inlet end (12) is arranged on the tail cover (19), and the water inlet end (12) is communicated with the inner cavity of the water inlet pipe (10).

2. A rotary joint for a cooling roller according to claim 1, characterized in that: The contact surface of the right sealing outer cone (23) and the right sealing ring (24) is spherical in shape. The rotating tube (17) rotates in the supporting tube (22) and moves axially. A radial hole (26) is provided on the wall of the supporting tube (22). The return water end (13) is connected to the inner cavity of the rotating tube (17) through the radial hole (26).

3. A rotary joint for a cooling roller according to claim 2, characterized in that: The left sealing ring (21) and the right sealing ring (24) are made of graphite.

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