A new guide wheel mechanism

Abstract

The utility model discloses a novel guide wheel mechanism relates to spinning equipment spare parts technical field, solved the service life of bearing in the existing guide wheel mechanism's problem of not enough. It includes: first support, second support, two spring sheets, two spring sheets are parallel and set respectively in the upside and downside of first support and second support, first support and second support are connected through two spring sheets, guide wheel, the guide wheel rotation is connected on the second support, the rotation direction of guide wheel is identical with the rotation direction of transmission flat belt, the second support can swing up and down relative to first support through spring sheet, and can make guide wheel can press down transmission flat belt through the second support of pressing down. The novel guide wheel mechanism has improved the torsional deformation of second support in horizontal direction and the torsional deformation in vertical direction, thereby reduce the shearing force and impact force of bearing in guide wheel mechanism, have promoted the service life of bearing.

Description

Technical Field

[0001] This utility model relates to the technical field of spinning equipment parts, and in particular to a novel guide wheel mechanism. Background Technology

[0002] The guide wheel mechanism is a key component on the transmission flat belt. Its main function is to guide the transmission flat belt to rotate, which is driven by the motor in the head and tail of the rotor air-jet spinning machine. The guide wheel mechanism guides the transmission direction of the transmission flat belt and presses it down so that it contacts the spinning cup shaft in the spinning machine, thereby driving the spinning cup to rotate and spin yarn.

[0003] When the drive belt rotates, the side flanges of the guide wheel in the guide wheel mechanism prevent the belt from veering to the left or right. The guide wheel adjusts the belt tension by pressing down on the drive belt, ensuring sufficient friction to drive the spindle shaft to rotate. During this process, it is necessary to buffer the vibrations of the drive belt and machine frame during high-speed operation and overcome the shear forces they exert on the bearings within the guide wheel mechanism. Because these vibrations and shear forces significantly affect the lifespan of the bearings in the guide wheel mechanism, the ability of the guide wheel mechanism to better buffer these vibrations and reduce the shear forces on the bearings within it plays a crucial role in the ultimate lifespan of the bearings in the guide wheel mechanism.

[0004] The existing guide wheel mechanism has a relatively thick spring plate. The two ends of the spring plate are connected to the fixed bracket and the guide wheel mounting bracket, respectively. The guide wheel mounting bracket vibrates significantly during the up-and-down swinging process, and the movement trajectory is arc-shaped. Therefore, when the guide wheel mechanism presses down on the drive belt, the guide wheel mechanism is prone to large vibrations, which can cause a large impact on the bearing and affect the service life of the bearing. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems by designing a new type of guide wheel mechanism, which solves the problem of insufficient bearing life in existing guide wheel mechanisms.

[0006] The technical solution of this utility model to achieve the above objectives is a novel guide wheel mechanism, comprising:

[0007] The first bracket is used for fixed installation on the spinning equipment;

[0008] The second bracket is used to mount the guide wheels;

[0009] Two spring plates are parallel to each other. One spring plate is connected at both ends to the upper surface of the first support in the thickness direction and the upper surface of the second support in the thickness direction, respectively. The other spring plate is connected to the lower surface of the first support in the thickness direction and the lower surface of the second support in the thickness direction.

[0010] The guide wheel is rotatably connected to the second bracket. The rotation direction of the guide wheel is the same as the rotation direction of the drive belt. The second bracket can swing up and down relative to the first bracket via a spring plate, and the guide wheel can press down on the drive belt by pressing down on the second bracket.

[0011] Preferably, the first support and the second support are at the same horizontal height.

[0012] Preferably, the thickness of the first support and the second support are the same.

[0013] Preferably, the thickness of the spring sheet is less than the thickness of the first bracket and the second bracket.

[0014] Preferably, one side of the first bracket is bent vertically downward to form a fixing part, and the fixing part has bolt holes.

[0015] Preferably, at least one side of the second bracket is bent vertically downward to form a mounting portion, and the guide wheel is rotatably connected to the mounting portion via a bearing.

[0016] Preferably, the two ends of the spring sheet are riveted to the first bracket and the second bracket respectively.

[0017] Its advantages over existing technologies are:

[0018] The novel guide wheel mechanism of this utility model has a thinner layer of spring sheet above and below the first and second supports. Compared with the single-layer thicker spring sheet of the existing guide wheel mechanism, firstly, the two layers of spring sheet have stronger anti-torsion ability, which will greatly improve the torsional deformation of the second support when it is tilted upward, thereby reducing the shear force on the bearing in the guide wheel mechanism; secondly, the two layers of spring sheet will generate greater resistance to vibration, which will improve the deformation of the second support in the vertical direction, thereby reducing the amplitude of the swing caused by vibration in the vertical direction of the second support, reducing the impact force on the bearing in the guide wheel mechanism caused by vibration, and improving the service life of the bearing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the novel guide wheel mechanism of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the novel guide wheel mechanism from another perspective;

[0021] Figure 3 This is a diagram showing the working state of the new guide wheel mechanism;

[0022] Figure 4 This is a schematic diagram of the second support twisting around a horizontal line along the length of the spring plate;

[0023] Figure 5 This is a schematic diagram of the second support moving upwards.

[0024] In the figure, 1 is the first bracket; 11 is the fixing part; 111 is the bolt hole; 2 is the second bracket; 21 is the mounting part; 3 is the spring plate; 4 is the guide wheel; 5 is the bearing; 6 is the transmission flat belt; 7 is the spinning cup shaft; and 8 is the spinning cup. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] like Figure 1 and Figure 2 As shown, a preferred embodiment of this utility model proposes a novel guide wheel mechanism for pressing down the transmission flat belt 6, so that the transmission flat belt 6 is in close contact with the lower spinning cup 8, thereby driving the spinning cup 8 to move.

[0027] This novel guide wheel mechanism mainly includes two supports, two spring plates 3, and a guide wheel 4. The two supports are a first support 1 (i.e., a fixed support) and a second support 2 (i.e., a guide wheel mounting support). The first support 1 is used to fix the entire guide wheel mechanism. The first support 1 is typically fixedly installed on spinning equipment. The second support 2 is fixedly connected to the first support 1 via two spring plates 3. The spring plates 3 have a certain elasticity, allowing the second support 2 to swing up and down relative to the first support 1. The guide wheel 4 is rotatably connected to the second support 2.

[0028] For details, please refer to Figure 2 The first support 1 is usually fixed. A fixing part 11 is formed by bending vertically downward on one side of the first support 1, so that the cross-sectional shape of the first support 1 is L-shaped. Bolt holes 111 are provided on the fixing part 11 for installing bolts. The fixing part 11 of the first support 1 is fixedly installed on the spinning equipment by bolts.

[0029] The spinning equipment has a waist-shaped hole through which bolts pass and threadedly connect with nuts. The horizontal height of the first bracket 1, i.e., the installation height of the entire guide wheel mechanism, can be adjusted through the waist-shaped hole.

[0030] Continue to refer to Figure 2One side of the second bracket 2 is bent vertically downwards to form a mounting portion 21 for mounting the guide wheel 4; therefore, the cross-sectional shape of the second bracket 2 is also similar to an L-shape. The guide wheel 4 is rotatably connected to the mounting portion 21 via a bearing 5. The mounting portion 21 has mounting holes, and the bearing 5 is located within the mounting holes. A groove is provided on the outer circumferential surface of the guide wheel 4; the width of the groove is slightly larger than the width of the drive belt 6, used to limit the left and right movement of the drive belt 6.

[0031] The first bracket 1 and the second bracket 2 have the same thickness. Therefore, during assembly, the first bracket 1 and the second bracket 2 are kept at the same horizontal height. Then, two spring plates 3 are placed above and below the first bracket 1 and the second bracket 2, respectively. The two ends of the spring plates 3 are tightly attached to the upper and lower surfaces of the first bracket 1 and the second bracket 2, and are fixed to the first bracket 1 and the second bracket 2 by riveting. The first bracket 1 and the second bracket 2 are separated by a certain distance, so the second bracket 2 can swing up and down through the spring plates 3. During the up and down swinging process, the second bracket 2 can play a buffering role.

[0032] In this embodiment, the thickness of the spring sheet 3 is less than the thickness of the first bracket 1 and the second bracket 2, therefore the spring sheet 3 has better elasticity. The distance between the two spring sheets 3 is consistent with the thickness of the first bracket 1 and the second bracket 2.

[0033] In this embodiment, the thickness of the spring sheet 3 is thinner than that of a single-layer spring sheet 3 in the prior art. Typically, the thickness of the spring sheet 3 in this embodiment is around 1 mm. In the prior art, the thickness of the spring sheet 3 is generally around 1.6 mm.

[0034] See also Figure 3 Specifically, during operation, an external force will press down on the second support 2. Since the two spring plates 3 have a certain elasticity, the second support 2 can swing downward relative to the first support 1, causing the guide wheel 4 to press down on the transmission flat belt 6. Under the pressure of the guide wheel 4, the transmission flat belt 6 will stick tightly to the spinning cup 8 on the spinning cup shaft 7 below, driving the spinning cup 8 to rotate.

[0035] The transmission belt 6 generates significant vibration during high-speed movement. This vibration is transmitted to the guide wheel mechanism, causing the guide wheel 4 and the second support 2 to also vibrate significantly. When the second support 2 vibrates downwards, the lower spring plate 3 bends more, while the upper spring plate 3 provides resistance, resulting in a smaller bend and reducing the vibration amplitude. Similarly, when the second support 2 vibrates upwards, the lower spring plate 3 provides resistance, further reducing the vibration amplitude. Therefore, the vibration trajectories of the guide wheel 4 and the second support 2 during vertical vibration are similar to vertical, without producing large arc-shaped vibration trajectories. This greatly improves the torsional deformation of the second support 2 (i.e., the guide wheel mounting bracket) in the vertical direction, thereby significantly reducing the amplitude of the vertical oscillation caused by the vibration of the second support 2 and reducing the impact force on the bearing 5 within the guide wheel mechanism caused by the vibration.

[0036] The mounting portion 21 of the second bracket 2 will also undergo upward torsional deformation, causing the spring plate 3 to be subjected to torsional force. This torsional force will cause the bearing 5 on the second bracket 2 to be subjected to a large shear force. The double-layer spring plate 3 has a stronger resistance to torsional force than the single-layer spring plate 3, which will improve the torsional deformation of the second bracket 2 (i.e., the guide wheel mounting bracket), thereby reducing the shear force on the bearing 5 in the guide wheel mechanism.

[0037] As can be seen from the table below, when the same force of 50 Newtons is applied to the guide wheel mechanism with a single, thicker spring sheet 3 in the prior art and the guide wheel mechanism with a double, thinner spring sheet 3 in this application, the torsion angle of the guide wheel mounting bracket (i.e., the second bracket 2) around a horizontal line in the length direction of the spring sheet 3 (referring to the side away from the mounting part 21 in the length direction of the spring sheet 3) is significantly reduced. The specific torsion direction can be found in [reference needed]. Figure 4 .

[0038]

[0039] The upward angle of the guide wheel mounting bracket around a horizontal line in the width direction of spring plate 3 has been reduced from the original 4° to 2°. During the up-and-down swinging process, the upward angle of the guide wheel mounting bracket has been significantly reduced, and its movement trajectory is similar to vertical up-and-down movement. (See [reference needed]). Figure 5 The vertical deformation displacement of the guide wheel mounting bracket is also significantly reduced. The vertical deformation displacement of the guide wheel mounting bracket refers to the vertical displacement on the side where the mounting part 21 of the guide wheel mounting bracket is located.

[0040] When the guide wheel mounting bracket moves upward, the middle area of ​​the upper spring plate 3 bends downward, while the lower spring plate 3 exerts a pulling effect on the guide wheel mounting bracket. Therefore, the part of the lower spring plate 3 near the guide wheel mounting bracket will be slightly bent, making the upward movement trajectory of the guide wheel mounting bracket similar to vertical.

[0041] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A novel guide wheel mechanism, characterized by, include: The first bracket (1) is used for fixed installation on the spinning equipment; The second bracket (2) is used to install the guide wheel (4); Two spring plates (3) are parallel to each other. One spring plate (3) is connected to the upper surface of the first support (1) in the thickness direction and the upper surface of the second support (2) in the thickness direction at both ends. The other spring plate (3) is connected to the lower surface of the first support (1) in the thickness direction and the lower surface of the second support (2) in the thickness direction. The guide wheel (4) is rotatably connected to the second bracket (2). The rotation direction of the guide wheel (4) is consistent with the rotation direction of the transmission flat belt (6). The second bracket (2) can swing up and down relative to the first bracket (1) through the spring plate (3), and can press down the second bracket (2) so that the guide wheel (4) can press down the transmission flat belt (6).

2. A novel guide wheel mechanism according to claim 1, characterized in that The first support (1) and the second support (2) are at the same horizontal level.

3. A novel guide wheel mechanism according to claim 1, characterized in that, The thickness of the first support (1) and the second support (2) is the same.

4. The novel guide wheel mechanism according to claim 3, characterized in that, The thickness of the spring sheet (3) is less than the thickness of the first bracket (1) and the second bracket (2).

5. A novel guide wheel mechanism according to claim 1, characterized in that, The first bracket (1) has a fixing part (11) that is bent vertically downward on one side, and the fixing part (11) has a bolt hole (111).

6. A novel guide wheel mechanism according to claim 1, characterized in that The second bracket (2) has at least one side bent vertically downward to form a mounting part (21), and the guide wheel (4) is rotatably connected to the mounting part (21) via a bearing (5).

7. A novel guide wheel mechanism according to claim 1, characterized in that The two ends of the spring sheet (3) are respectively riveted to the first bracket (1) and the second bracket (2).

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