A pinch roller ring fixing structure and implementation method thereof

Abstract

The present invention discloses a roller ring fixing structure of a pinch roller, including a roller shaft, an inner oil slinger, an outer oil slinger and a roller ring assembly are arranged on the circumference of the roller shaft from left to right in sequence, a locking assembly is arranged on one side of the roller ring assembly, the locking assembly includes a locking sleeve and a taper sleeve, the locking sleeve and the taper sleeve are connected by a flange, a connecting screw is arranged at the end of the roller shaft, a thread groove is arranged inside the locking sleeve, the connecting screw and the thread groove are connected by threaded engagement, a cavity corresponding to the taper sleeve is also arranged inside the locking sleeve, a gasket is arranged inside the cavity, and a butterfly spring is arranged on one side of the gasket; the present invention also discloses a method for realizing a pinch roller ring fixing structure. When the roller ring is subjected to a large pressure laterally, the butterfly spring can be used to reduce the pressure, thereby avoiding the roller ring from collapsing due to the combined action of the alternating stress caused by the radial pressure and the thermal expansion stress caused by the temperature rise of the roller shaft.

Description

Technical Field

[0001] The invention belongs to the technical field of pinch roller ring fixing, and in particular relates to a pinch roller ring fixing structure and a realization method thereof. Background Art

[0002] High-speed wire and bar rolling mills are key equipment in the steel industry. The installation and fixation of the roll rings of this rolling mill use cone sleeve assembly, and the friction of the joint surface is used to achieve keyless connection and load bearing. The friction and contact properties of the joint surface are extremely important for the assembly of the roll ring (because it is connected by friction without key and load bearing). There are some problems in the use of existing pinch rolls, such as:

[0003] 1. In the common locking method, the cone sleeve overcomes the friction between the cone sleeve and the roller shaft, the friction between the roller ring and the cone sleeve, and the positive pressure axial force of the roller shaft on the cone sleeve under the axial pressure, and is assembled in place to form a mechanical balance. This method will cause the cone sleeve to wear and deform over a long period of time, resulting in pressure loss.

[0004] 2. The function of the pinch roller is to maintain the clamping force of the entire finishing rolling process. At present, the wire production speed is getting faster and faster, which is affected by the control of the electrical reaction time. During the rolling process, the wire will have a certain degree of insufficient clamping force, wire deformation, and affect the wire entering the wire laying machine in a good state. Therefore, it is necessary to increase the diameter of the pinch roller to compensate for the electrical delay, and a larger torque is required to maintain the clamping force during clamping;

[0005] 3. Traditional pinch rollers use a water spray structure to cool down. Although the laying machine has an air blowing device to blow away the water that enters it, it cannot guarantee that no water will enter the laying tube of the laying machine. The entry of water will affect the service life of the laying tube of the laying machine, and even cause the laying tube to burst, and affect the quality of the subsequent rolled wire products; Summary of the invention

[0006] The purpose of the present invention is to provide a pinch roller ring fixing structure to solve the problems mentioned in the above background technology. The pinch roller ring fixing structure provided by the present invention has the characteristic of avoiding the pressure drop.

[0007] Another object of the present invention is to provide a method for implementing a pinch roller ring fixing structure.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pinch roller roller ring fixing structure, including a roller shaft, an inner oil slinger, an outer oil slinger and a roller ring assembly are arranged on the circumference of the roller shaft from left to right in sequence, a locking assembly is arranged on one side of the roller ring assembly, the locking assembly includes a locking sleeve and a tapered sleeve, the locking sleeve and the tapered sleeve are connected by a flange, the tapered sleeve is arranged on the circumference of the roller shaft, the flange abuts against the side of the roller ring assembly, a connecting screw is arranged at the end of the roller shaft, a threaded groove is arranged inside the locking sleeve, the connecting screw and the threaded groove are connected by threaded meshing, a cavity corresponding to the tapered sleeve is also arranged inside the locking sleeve, a gasket is arranged inside the cavity, and a butterfly spring is arranged on one side of the gasket.

[0009] In order to improve the stability of use, the butterfly spring is further composed of three parallel steel butterfly springs. The thickness of a single steel disc spring is 8.15 mm.

[0010] In order to support the roller ring, further, the roller ring assembly includes a supporting wheel, a roller ring and a pressure cover, wherein the roller ring is arranged on the circumference of the supporting wheel, and the pressure cover is fixed to the side of the supporting wheel by screws.

[0011] In order to further strengthen the locking effect of the roller ring under the covering pressure of the locking sleeve and increase the duration of the locking effect, thereby avoiding steel piling up on the entire high-line, roller explosion and even injury accidents caused by the cone sleeve dropping pressure and insufficient clamping force, further, a keyway is provided on the circumference of the roller shaft, a first keyway corresponding to the keyway is provided on the supporting wheel, and a second keyway corresponding to the keyway is provided on the cone sleeve, and the keyway, the first keyway and the second keyway are connected by a key.

[0012] In order to generate airflow when the support wheel rotates and accelerate the air circulation in the support wheel, thereby playing a cooling role, there is no need to spray water on the pinch roller, avoid bringing the cold water of the pinch roller into the subsequent spinning machine, and extend the service life of the spinning tube of the spinning machine. Furthermore, a plurality of air holes in a ring array are provided on the support wheel.

[0013] In order to ensure the cooling effect, further, the angle of the air hole is 13°.

[0014] In the present invention, further, a method for implementing the pinch roller ring fixing structure comprises the following steps:

[0015] (1) Assemble the inner oil slinger and the outer oil slinger onto the roller shaft in sequence;

[0016] (2) Assemble the key onto the roller shaft;

[0017] (3) Align the first keyway on the support wheel with the key and assemble the roller ring assembly onto the roller shaft;

[0018] (iv) Align the second keyway on the taper sleeve with the key and fit the taper sleeve onto the roller shaft;

[0019] (V) Tighten the locking sleeve to engage the connecting screw with the thread groove.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. When the roller ring is subjected to a large lateral pressure, the butterfly spring can be used to reduce the pressure, thereby preventing the roller ring from collapsing due to the combined effects of alternating stress caused by radial pressure and thermal expansion stress caused by the temperature rise of the roller shaft;

[0022] 2. The butterfly spring of the present invention can buffer the radial tension force of the roller ring, reduce the roller explosion phenomenon caused by excessive tension force, and at the same time ensure the tension force of the roller ring under long-term use, avoiding the phenomenon of misalignment and pressure drop;

[0023] 3. The invention uses the key and keyway to limit the roller shaft, the support wheel and the cone sleeve, and further strengthens the locking effect of the roller ring under the covering pressure of the locking sleeve, and increases the duration of the locking effect, thereby avoiding the pile of steel on the whole line, the explosion of the roller and even the injury of people caused by the cone sleeve falling pressure and insufficient clamping force;

[0024] 4. The support wheel of the present invention is provided with a plurality of air holes in a circular array. Through the arrangement of the air holes, air flow can be generated when the support wheel rotates, accelerating the air circulation in the support wheel, thereby playing a cooling role. There is no need to spray water on the pinch roller, avoiding the cold water of the pinch roller from being brought into the subsequent spinning machine, thereby extending the service life of the spinning tube of the spinning machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the locking assembly of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the locking sleeve of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the roller ring assembly of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the support wheel of the present invention;

[0030] In the figure: 1. roller shaft; 2. inner oil slinger; 3. outer oil slinger; 4. roller ring assembly; 41. support wheel; 411. air hole; 412. first keyway; 42. roller ring; 43. pressure cover; 5. locking assembly; 6. connecting screw; 7. key; 8. locking sleeve; 81. threaded groove; 82. cavity; 9. tapered sleeve; 91. second keyway; 10. flange; 11. gasket; 12. butterfly spring. 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1-5 The present invention provides the following technical solutions: a pinch roller roller ring fixing structure, comprising a roller shaft 1, an inner oil slinger 2, an outer oil slinger 3 and a roller ring assembly 4 are arranged on the circumference of the roller shaft 1 from left to right in sequence, a locking assembly 5 is arranged on one side of the roller ring assembly 4, the locking assembly 5 comprises a locking sleeve 8 and a taper sleeve 9, the locking sleeve 8 and the taper sleeve 9 are connected by a flange 10, the taper sleeve 9 is sleeved on the circumference of the roller shaft 1, the flange 10 abuts against the side of the roller ring assembly 4, a connecting screw 6 is arranged at the end of the roller shaft 1, a threaded groove 81 is arranged inside the locking sleeve 8, the connecting screw 6 is connected to the threaded groove 81 by threaded meshing, a cavity 82 corresponding to the taper sleeve 9 is also arranged inside the locking sleeve 8, a gasket 11 is arranged inside the cavity 82, and a butterfly spring 12 is arranged on one side of the gasket 11.

[0034] By adopting the above technical scheme, when the roller ring 42 is subjected to a large lateral pressure, the butterfly spring 12 can be used to reduce the pressure, thereby avoiding the roller ring 42 from being subjected to the combined effects of the alternating stress caused by the radial pressure and the thermal expansion stress caused by the temperature rise of the roller shaft, which causes the roller to collapse; the butterfly spring 12 can buffer the radial tensioning force of the roller ring 42, reduce the roller explosion phenomenon caused by excessive tensioning force, and at the same time ensure the tensioning force of the roller ring 42 under long-term use, thereby avoiding the phenomenon of misalignment and pressure drop.

[0035] Specifically, the butterfly spring 12 is composed of three parallel steel butterfly springs. The thickness of a single steel disc spring is 8.15 mm.

[0036] By adopting the above technical solution, the stability of use is improved.

[0037] Specifically, the roller ring assembly 4 includes a supporting wheel 41, a roller ring 42 and a pressure cover 43, wherein the roller ring 42 is arranged on the circumference of the supporting wheel 41, and the pressure cover 43 is fixed to the side of the supporting wheel 41 by screws.

[0038] By adopting the above technical solution, the roller ring 42 is supported.

[0039] Example 2

[0040] The difference between this embodiment and embodiment 1 is that: specifically, a key groove is provided on the circumference of the roller shaft 1, a first key groove 412 corresponding to the key groove is provided on the support wheel 41, a second key groove 91 corresponding to the key groove is provided on the cone sleeve 9, and the key groove, the first key groove 412 and the second key groove 91 are connected by a key 7.

[0041] By adopting the above technical solution, the roller shaft 1, the supporting wheel 41 and the cone sleeve 9 are limited by the key and the keyway, and the locking effect of the roller ring 42 is further strengthened under the covering pressure of the locking sleeve 8, and the duration of the locking effect is increased, thereby avoiding the pile of steel on the whole high-speed line, the explosion of rollers and even injuries caused by the cone sleeve 9 dropping pressure and insufficient clamping force.

[0042] Example 3

[0043] The present embodiment is different from the first embodiment in that: specifically, the support wheel 41 is provided with a plurality of air holes 411 in a ring array.

[0044] By adopting the above technical solution, through the setting of the air hole 411, airflow can be generated when the support wheel 41 rotates, accelerating the air circulation in the support wheel 41, thereby playing a cooling role. There is no need to spray water on the pinch roller, avoiding the cold water of the pinch roller from being brought into the subsequent spinning machine, thereby extending the service life of the spinning tube of the spinning machine.

[0045] Specifically, the angle of the air hole 411 is 13°, which is obtained through repeated practice. If the angle of the air hole is too large, it will cause the equipment to vibrate, and if the angle is too small, it will not have a good cooling effect.

[0046] By adopting the above technical solution, the cooling effect is ensured.

[0047] Example 4

[0048] Specifically, further, a method for implementing a pinch roller ring fixing structure according to the present invention comprises the following steps:

[0049] (i) Assemble the inner oil slinger 2 and the outer oil slinger 3 onto the roller shaft 1 in sequence;

[0050] (ii) Assemble the key 7 onto the roller shaft 1;

[0051] (iii) Align the first keyway 412 on the support wheel 41 with the key 7 and assemble the roller ring assembly 4 onto the roller shaft 1;

[0052] (iv) Align the second keyway 91 on the taper sleeve 9 with the key 7 and assemble the taper sleeve 9 onto the roller shaft 1;

[0053] (V) Tighten the locking sleeve 8 to engage the connecting screw 6 with the thread groove 81.

[0054] In summary, when the roller ring 42 is subjected to a large lateral pressure, the butterfly spring 12 can be used to reduce the pressure, thereby preventing the roller ring 42 from being crushed due to the combined effects of the alternating stress caused by the radial pressure and the thermal expansion stress caused by the temperature rise of the roller shaft; the butterfly spring 12 of the present invention can buffer the radial tensioning force of the roller ring 42, reduce the roller explosion phenomenon caused by excessive tensioning force, and at the same time ensure the tensioning force of the roller ring 42 under long-term use, avoiding the phenomenon of misalignment and pressure drop; the present invention limits the roller shaft 1, the support wheel 41 and the tapered sleeve 9 by means of a key and a keyway. , the locking effect of the roller ring 42 is further strengthened under the covering pressure of the locking sleeve 8, and the duration of the locking effect is prolonged, thereby avoiding the high-line steel piling, roller explosion and even injury accidents caused by the cone sleeve 9 dropping pressure and insufficient clamping force; the support wheel 41 of the present invention is provided with a plurality of air holes 411 in a ring array, and through the setting of the air holes 411, air flow can be generated when the support wheel 41 rotates, and the air circulation in the support wheel 41 is accelerated, thereby playing a role in cooling. There is no need to spray water on the pinch roller, which avoids bringing the cold water of the pinch roller into the subsequent spinning machine, and prolongs the service life of the spinning tube of the spinning machine.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pinch roller ring fixing structure, comprising a roller shaft, characterized in that: An inner oil slinger, an outer oil slinger and a roller ring assembly are arranged on the circumference of the roller shaft from left to right in sequence. A locking assembly is arranged on one side of the roller ring assembly. The locking assembly includes a locking sleeve and a taper sleeve. The locking sleeve and the taper sleeve are connected by a flange. The taper sleeve is arranged on the circumference of the roller shaft. The flange abuts against the side of the roller ring assembly. A connecting screw is arranged at the end of the roller shaft. A threaded groove is arranged inside the locking sleeve. The connecting screw and the threaded groove are connected by threaded meshing. A cavity corresponding to the taper sleeve is also arranged inside the locking sleeve. A gasket is arranged inside the cavity. A disc spring is arranged on one side of the gasket. The roller ring assembly comprises a supporting wheel, a roller ring and a pressure cover, wherein the roller ring is arranged on the circumference of the supporting wheel, and the pressure cover is fixed to the side of the supporting wheel by screws; A keyway is provided on the circumference of the roller shaft, a first keyway corresponding to the keyway is provided on the supporting wheel, a second keyway corresponding to the keyway is provided on the cone sleeve, and the keyway, the first keyway and the second keyway are connected by a key.

2. A pinch roller ring fixing structure according to claim 1, characterized in that: The disc spring is composed of three parallel-connected steel disc springs.

3. A pinch roller ring fixing structure according to claim 2, characterized in that: The thickness of the single-piece steel disc spring is 8.15 mm.

4. The pinch roller ring fixing structure according to claim 1, characterized in that: The support wheel is provided with a plurality of air holes in a ring array.

5. A method for implementing a pinch roller ring fixing structure according to any one of claims 1 to 4, characterized in that: The following steps are involved: (i) Assemble the inner oil slinger and the outer oil slinger onto the roller shaft in sequence; (ii) Assemble the key onto the roller shaft; (iii) Align the first keyway on the support wheel with the key and assemble the roller ring assembly onto the roller shaft; (iv) Align the second keyway on the taper sleeve with the key and fit the taper sleeve onto the roller shaft; (V) Tighten the locking sleeve to engage the connecting screw with the thread groove.

Images