Mounting structure of a pulling wheel of a steel cord stranding machine

Abstract

The utility model relates to steel cord production technical field, more particularly to steel cord stranding machine traction wheel's mounting structure, include: stranding machine frame, be equipped with guide pulley, straightener and first traction wheel and second traction wheel on the stranding machine frame, steel wire passes the guide pulley, straightener and first traction wheel and second traction wheel in proper order, be equipped with drive part and two drive shafts on the stranding machine frame, the drive part is used for driving two drive shafts rotation, drive shaft is by the first side of stranding machine frame and is penetrated to the second side. The present application adds the support structure between two traction shafts, can effectively resist the bending moment that makes two shafts close to each other produced by huge traction tension, significantly reduces the deflection deformation of shaft, not only avoids the abnormal wear, also guarantees the stability of two traction wheel center distance, ensures the uniformity of cord tension and the stability of product twisting quality.

Description

Technical Field

[0001] This utility model relates to the field of steel cord production technology, and more specifically to the installation structure of the traction wheel of a steel cord stranding machine. Background Technology

[0002] Steel cord is a key structural material for rubber products such as radial tires and high-pressure hoses, and its production process demands extremely high equipment stability and precision. The stranding machine is the core equipment in steel cord production, responsible for twisting multiple monofilaments into a single strand that meets technical requirements. In this process, the traction device plays a crucial role, needing to provide stable and sufficient traction tension to ensure uniform twist pitch and a tight cord structure.

[0003] Currently, the mainstream installation structure of the traction wheel for a stranding machine is as follows: the traction wheel is fixed and drives the shaft by connecting to the corresponding square head on the traction shaft through a square hole inside its hub using a square pin. This structure relies on the interference fit between the square pin and the square groove to transmit torque and fix the circumferential position.

[0004] However, as the diameter of the cord produced continues to increase, the tension in the traction part is high, and the traction shaft is prone to wear or breakage. Currently, the traction shaft and traction wheel connected by square pins have a shorter service life after the tension increases due to tolerance matching issues. Furthermore, the relative positions of the two sets of traction wheels cannot be adjusted, resulting in increased maintenance costs and a high failure rate. Utility Model Content

[0005] To address the technical problems existing in the traction wheel mounting structure of the prior art, this utility model proposes a mounting structure for the traction wheel of a steel cord stranding machine, comprising:

[0006] A stranding machine frame is provided with a guide wheel, a straightener, a first traction wheel, and a second traction wheel. The steel wire passes sequentially around the guide wheel, the straightener, the first traction wheel, and the second traction wheel.

[0007] The jointing machine frame is equipped with a drive component and two drive shafts. The drive component is used to drive the two drive shafts to rotate. The drive shafts extend from the first side to the second side of the jointing machine frame. The drive component is located on the first side of the jointing machine frame. The first traction wheel and the second traction wheel are respectively mounted on the two drive shafts and are located on the second side of the jointing machine frame.

[0008] The first traction wheel and the second traction wheel are both connected to the drive shaft via expansion sleeves, and the ends of the two drive shafts are provided with support structures. The support structures are used to restrict the two drive shafts from bending or displacing towards each other, so that the axes of the two drive shafts remain parallel.

[0009] Preferably, the support structure is a rigid structure, with the first end of the support structure connected to the outer wall of the first drive shaft via a bearing structure, and the second end of the support structure connected to the outer wall of the second drive shaft via a bearing structure.

[0010] Preferably, the bearing structure is fixed to the outer wall of the drive shaft, and the two ends of the support structure are provided with a sleeve structure sleeved on the outer ring of the bearing structure.

[0011] Preferably, the end of the drive shaft is provided with a threaded hole and a pressure cap. The pressure cap is fixed to the end of the drive shaft by screws and presses the support structure to axially limit the support structure.

[0012] Preferably, the support structure comprises a stainless steel plate.

[0013] Preferably, the expansion sleeve includes an outer support structure, an inner support structure, and a bolt. The outer support structure is connected to the inner wall of the first or second traction wheel, and the inner support structure is connected to the outer wall of the drive shaft. The outer support structure and the inner support structure are connected by a wedge surface. The bolt is connected to the inner support structure. When the bolt is rotated, the radial position between the outer support structure and the inner support structure changes, causing the first or second traction wheel to loosen or tighten with the drive shaft.

[0014] Preferably, the surface of either the first traction wheel or the second traction wheel is provided with multiple traction grooves.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This application adds a support structure between the two traction shafts, which can effectively resist the bending moment generated by the huge traction tension that brings the two shafts closer together, significantly reducing the deflection deformation of the shafts. This not only avoids abnormal wear but also ensures the stability of the center distance between the two traction wheels, ensuring the uniformity of the cord tension and the stability of the product twisting quality.

[0017] This application uses an expansion sleeve to replace the traditional pin or key connection, and uses friction to transmit torque, eliminating problems such as fretting wear and stress concentration caused by the tolerance of the square pin and keyway. This greatly improves the fatigue strength of the traction shaft and traction wheel itself. With the expansion sleeve connection, the axial position of the traction wheel can be easily adjusted by simply loosening the locking bolts, so that the relative position between the two traction wheels can be quickly, flexibly and accurately adjusted according to process requirements or maintenance requirements. Attached Figure Description

[0018] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram showing the installation position of the traction wheel of the steel cord stranding machine shown in this utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of the traction wheel of the steel cord stranding machine shown in this utility model;

[0021] Figure 3 This is a schematic diagram of the expansion sleeve and support structure shown in this utility model. Detailed Implementation

[0022] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0023] Combination Figure 1 As shown, this utility model proposes an installation structure for the traction wheel of a steel cord stranding machine, including a stranding machine frame 10, a first traction wheel 40, a second traction wheel 50, a support structure 60, and an expansion sleeve 70.

[0024] The stranding machine frame 10 is equipped with a guide wheel 20, a straightener 30, a first traction wheel 40, and a second traction wheel 50. The steel wire passes around the guide wheel 20, the straightener 30, the first traction wheel 40, and the second traction wheel 50 in sequence.

[0025] Furthermore, in combination Figure 2 As shown, the jointing machine frame 10 is provided with a drive component 11 and two drive shafts 12. The drive component 11 is used to drive the two drive shafts 12 to rotate. The drive shafts 12 pass through the first side to the second side of the jointing machine frame 10. The drive component 11 is located on the first side of the jointing machine frame 10. The first traction wheel 40 and the second traction wheel 50 are respectively installed on the two drive shafts 12 and are located on the second side of the jointing machine frame 10.

[0026] The surface of either the first traction wheel 40 or the second traction wheel 50 is provided with multiple traction grooves. When adjusting the position of the first traction wheel 40 and the second traction wheel 50 on the drive shaft 12, special attention should be paid to aligning the grooves on the surfaces of the first traction wheel 40 and the second traction wheel 50 so that the steel cord passes through the grooves on the surfaces of the first traction wheel 40 and the second traction wheel 50 in sequence.

[0027] The first traction wheel 40 and the second traction wheel 50 are both connected to the drive shaft 12 via expansion sleeves 70. This connection between the traction wheels and the drive shaft 12 via expansion sleeves 70 facilitates adjustment of the axial position of the traction wheels on the surface of the drive shaft 12, thus ensuring alignment of the grooves on the surfaces of the first traction wheel 40 and the second traction wheel 50.

[0028] Specifically, in combination Figure 3 As shown, the expansion sleeve 70 includes an outer support structure 71, an inner support structure 72, and a bolt 73. The outer support structure 71 is connected to the inner wall of the first traction wheel 40 or the second traction wheel 50, and the inner support structure 72 is connected to the outer wall of the drive shaft 12. The outer support structure 71 and the inner support structure 72 are connected by a wedge surface, and the bolt 73 is connected to the inner support structure 72.

[0029] The inner support structure 72 consists of two parts: a front support structure and a rear support structure. The two parts are separate, and bolts 73 are threadedly connected to the two parts of the inner support structure 72. When the bolts 73 are rotated, the two parts separate or move closer together.

[0030] Two wedge-shaped surfaces are formed on the inner side of the outer support structure 71, and the two parts of the inner support structure 72 also have corresponding wedge-shaped surfaces. Thus, when the bolt 73 is rotated, the two parts of the inner support structure 72 move closer or further apart. Due to the supporting effect of some wedge-shaped surfaces, the outer support structure 71 moves outward or inward in the radial direction, thereby changing the radial position between the outer support structure 71 and the inner support structure 72, causing the first traction wheel 40 or the second traction wheel 50 to loosen or tighten with the drive shaft 12.

[0031] When the first traction wheel 40 or the second traction wheel 50 becomes loose from the drive shaft 12, the relative position of the first traction wheel 40 or the second traction wheel 50 and the drive shaft 12 can be adjusted. When the first traction wheel 40 or the second traction wheel 50 becomes tight from the drive shaft 12, the first traction wheel 40 or the second traction wheel 50 and the drive shaft 12 are fixed relative to each other.

[0032] It should be understood that when the first traction wheel 40 and the second traction wheel 50 are pulling the steel cord, their surfaces are subjected to great tension, that is, the first traction wheel 40 and the second traction wheel 50 tend to move closer to each other. Under this tendency, the drive shaft 12 is also subjected to great radial force. Therefore, the radial pressure of the drive shaft 12 is large, which will cause more fatigue wear or even breakage.

[0033] Therefore, a support structure 60 is provided at the ends of the two drive shafts 12. The support structure 60 is used to limit the bending or displacement of the two drive shafts 12 towards each other, so that the axes of the two drive shafts 12 remain parallel.

[0034] Thus, through the supporting effect of the support structure 60, the two drive shafts 12 can be prevented from getting close to each other, and the axes of the two drive shafts 12 are forced to remain parallel. In this way, the support of the support structure 60 reduces the bending stress of the drive shafts 12, which can cope with stronger traction tension and extend the service life of the drive shafts 12.

[0035] In an optional embodiment, the support structure 60 is a rigid structure, with the first end of the support structure 60 connected to the outer wall of the first drive shaft 12 via a bearing structure, and the second end of the support structure 60 connected to the outer wall of the second drive shaft 12 via a bearing structure.

[0036] Thus, when the drive shaft 12 rotates, the support structure 60 and the two drive shafts 12 remain relatively fixed in position. The bearing structure is a rigid structure that can transmit stress without deformation, so the two drive shafts 12 remain parallel to each other without bending.

[0037] In an optional embodiment, the bearing structure is fixed to the outer wall of the drive shaft 12, and the two ends of the support structure 60 are provided with a sleeve structure fitted onto the outer ring of the bearing structure.

[0038] The jacket structure can be selected as a clamp structure, and the two ends of the support structure 60 are fixed to the outer wall of the bearing structure through the clamp structure.

[0039] Furthermore, the end of the drive shaft 12 is provided with a threaded hole, and the end of the drive shaft 12 is also provided with a pressure cap 62. The pressure cap 62 is fixed to the end of the drive shaft 12 by screws and presses the support structure 60 to axially limit the support structure 60.

[0040] In this way, the pressure cap 62 is fixed to the end of the drive shaft 12 by screws, so that the support structure 60 is fixed to the drive shaft 12 and will not fall off, causing the two drive shafts 12 to lose support.

[0041] In the above embodiment, the support structure 60 includes a stainless steel plate. To ensure sufficient strength, the stainless steel plate can be selected as an 8mm thick and 30mm wide stainless steel plate.

[0042] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. An installation structure for a traction wheel of a steel cord stranding machine, characterized in that, include: A stranding machine frame (10) is provided with a guide wheel (20), a straightener (30), a first traction wheel (40), and a second traction wheel (50). The steel wire passes around the guide wheel (20), the straightener (30), the first traction wheel (40), and the second traction wheel (50) in sequence. The jointing machine frame (10) is provided with a drive component (11) and two drive shafts (12). The drive component (11) is used to drive the two drive shafts (12) to rotate. The drive shafts (12) extend from the first side of the jointing machine frame (10) to the second side. The drive component (11) is located on the first side of the jointing machine frame (10). The first traction wheel (40) and the second traction wheel (50) are respectively installed on the two drive shafts (12) and are located on the second side of the jointing machine frame (10). The first traction wheel (40) and the second traction wheel (50) are both connected to the drive shaft (12) through an expansion sleeve (70), and the ends of the two drive shafts (12) are provided with a support structure (60). The support structure (60) is used to restrict the two drive shafts (12) from bending or displacing towards each other, so that the axes of the two drive shafts (12) remain parallel.

2. The mounting structure of the traction wheel of the steel cord stranding machine according to claim 1, characterized in that, The support structure (60) is a rigid structure. The first end of the support structure (60) is connected to the outer wall of the first drive shaft (12) through a bearing structure, and the second end of the support structure (60) is connected to the outer wall of the second drive shaft (12) through a bearing structure.

3. The mounting structure of the traction wheel of the steel cord stranding machine according to claim 2, characterized in that, The bearing structure is fixed to the outer wall of the drive shaft (12), and the two ends of the support structure (60) are provided with a jacket structure sleeved on the outer ring of the bearing structure.

4. The mounting structure of the traction wheel of the steel cord stranding machine according to claim 2, characterized in that, The end of the drive shaft (12) is provided with a threaded hole, and the end of the drive shaft (12) is also provided with a pressure cap (62). The pressure cap (62) is fixed to the end of the drive shaft (12) by screws and presses the support structure (60) to axially limit the support structure (60).

5. The mounting structure of the traction wheel of the steel cord stranding machine according to claim 1, characterized in that, The support structure (60) includes a stainless steel plate.

6. The mounting structure of the traction wheel of the steel cord stranding machine according to claim 1, characterized in that, The expansion sleeve (70) includes an outer support structure (71), an inner support structure (72), and a bolt (73). The outer support structure (71) is connected to the inner wall of the first traction wheel (40) or the second traction wheel (50), and the inner support structure (72) is connected to the outer wall of the drive shaft (12).

7. The mounting structure of the traction wheel of the steel cord stranding machine according to claim 6, characterized in that, The outer support structure (71) and the inner support structure (72) are connected by a wedge, and the bolt (73) is connected to the inner support structure (72). When the bolt (73) is rotated, the radial position between the outer support structure (71) and the inner support structure (72) changes, causing the first traction wheel (40) or the second traction wheel (50) to loosen or tighten with the drive shaft (12).

8. The mounting structure of the traction wheel of the steel cord stranding machine according to claim 1, characterized in that, The surface of the first traction wheel (40) or the second traction wheel (50) is provided with multiple traction grooves.

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