Front compression roller rotating shaft hinging mechanism

Abstract

The utility model belongs to the technical field of drawing frames, and discloses a front compression roller rotating shaft hinging mechanism which comprises a base, a supporting seat is fixedly connected to the top of the base, a hinging rotating shaft is movably connected into the supporting seat, and needle bearings are arranged at the two ends of the hinging rotating shaft in a sleeved mode. Through cooperation of the hinge rotating shaft, the needle bearing, the guide groove, the clamping block and other structures, the problems that the hinge shaft of the front press roller is prone to loosening, and the operation stability of the drawing frame is affected are solved, the hinge rotating shaft and the needle bearing are widened and lengthened, and therefore the rigidity and the anti-torque strength of the hinge rotating shaft are effectively enhanced, and the service life of the drawing frame is prolonged. When a rotating cylinder rotates, a round rod is driven to drive a square block to move in the direction of a hinged rotating shaft along the track of a guide groove, and then a clamping block is driven to be clamped into an annular groove of the hinged rotating shaft, so that the hinged rotating shaft is axially limited, and then the hinged rotating shaft is prevented from moving or shaking in a supporting seat; therefore, the overall operation stability of the drawing frame is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the drawing frame technical field, specifically is a front press roll pivot hinged mechanism. BACKGROUND

[0002] The front press roll pivot hinged mechanism of the drawing frame is an important component for controlling the movement and position of the front press roll during operation. It is usually composed of a hinge shaft, a bracket, an adjustment mechanism, etc., aiming to ensure that the press roll can uniformly process the fiber material at appropriate pressure and angle.

[0003] The existing drawing frame, when running, generally installs ordinary bearings between the front press roll pivot and the fixed seat, so that the pivot can rotate smoothly in the fixed seat. However, since the drawing frame will vibrate during operation, these vibrations will be transmitted to the front press roll pivot and the fixed seat. Therefore, if the fastening degree of the hinged part is not enough or the structure is poor in shock resistance, the hinged pivot is prone to shaking or moving under the action of vibration, causing the detection signal of the drawing frame to be distorted, and thus affecting the stability of the overall operation of the drawing frame. Therefore, a front press roll pivot hinged mechanism is proposed to solve the problems raised in the background technology. SUMMARY

[0004] To solve the problems raised in the background technology, the utility model provides a front press roll pivot hinged mechanism, which has the advantages of preventing the hinged pivot from shaking and moving in the fixed seat, thereby improving the overall operation stability of the drawing frame.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a front press roll pivot hinged mechanism, comprising a base, the top of the base is fixedly connected with a support seat, the inside of the support seat is movably connected with a hinged pivot, the two ends of the hinged pivot are sleeved with needle roller bearings, the outer surface of the needle roller bearing is fixedly connected with a front press roll seat, the inside of the front press roll seat is provided with a front press roll body, the inside of the support seat is symmetrically movably connected with two rotating cylinders, the opposite sides of the two rotating cylinders are both annularly and ninety degrees apart from each other and provided with guide grooves, the inside of the guide groove is movably connected with a round rod, the end of the round rod away from the rotating cylinder is fixedly connected with a square block, the side of the square block close to the hinged pivot is fixedly connected with a clamping block, and the outer wall of the support seat is threadedly connected with two threaded rods.

[0006] Preferably, the two sides of the two ends of the front press roll seat are both fixedly connected with gaskets, the gaskets are made of plastic material, and the gaskets are used for sealing the two ends of the needle roller bearing.

[0007] Preferably, the hinged pivot and the needle roller bearing both penetrate the outer wall of the support seat and extend to the outside of the support seat, and the front press roll seat and the hinged pivot are connected through the needle roller bearing.

[0008] Preferably, circular holes adapted to the clamping blocks are provided in a circular pattern at 90 degrees on the inner wall of the support seat, and the clamping blocks are initially retracted into the interior of the support seat.

[0009] Preferably, the hinge shaft and needle bearing are widened and lengthened, and a group of annular grooves are symmetrically opened on the outer wall of the hinge shaft. When the square block moves toward the hinge shaft, it drives the clamping block to be clamped into the inside of the annular groove.

[0010] Preferably, a circular groove is provided on the surface of the square block close to one side of the threaded rod, and one end of the threaded rod is movably engaged in the inner part of the circular groove of the square block.

[0011] Preferably, the inner wall of the support seat is provided with a plurality of square grooves which cooperate with the square blocks, and the square grooves are used to circumferentially limit the square blocks when the drum rotates.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The utility model solves the problem that the hinge shaft of the front pressure roller is easy to loosen and affects the operating stability of the drawing frame through the coordination between structures such as the hinge shaft, needle roller bearings, guide grooves and clamping blocks. The hinge shaft and the needle roller bearings are widened and lengthened, thereby effectively enhancing the rigidity and torque resistance of the hinge shaft. A guide groove is opened on one side of the rotating drum, so that when the rotating drum rotates, the round rod is driven along the trajectory of the guide groove to drive the square block to move toward the direction of the hinge shaft, and then the clamping block is driven to be stuck in the inside of the annular groove of the hinge shaft, thereby axially limiting the hinge shaft, thereby preventing the hinge shaft from moving or shaking inside the support seat, thereby improving the overall operating stability of the drawing frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a plan view of the front cross-section structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the side cross-section structure of the front pressure roller seat of the utility model;

[0017] Figure 4 This is an exploded view of the rotating drum of the utility model.

[0018] In the figure: 1. Base; 2. Support seat; 3. Front pressure roller seat; 4. Front pressure roller body; 5. Articulated shaft; 6. Needle roller bearing; 7. Gasket; 8. Rotating drum; 9. Guide groove; 10. Square block; 11. Round rod; 12. Block; 13. Threaded rod. DETAILED DESCRIPTION

[0019] 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 are within the scope of protection of the present invention.

[0020] like Figures 1 to 4 As shown, the utility model provides a front pressure roller shaft hinge mechanism, including a base 1, the top of the base 1 is fixedly connected to a support base 2, the interior of the support base 2 is movably connected to a hinged shaft 5, both ends of the hinged shaft 5 are sleeved with needle bearings 6, the outer surface of the needle bearing 6 is fixedly connected to a front pressure roller seat 3, the interior of the front pressure roller seat 3 is provided with a front pressure roller body 4, the interior of the support base 2 is symmetrically and movably connected to two rotating cylinders 8, the opposite sides of the two rotating cylinders 8 are annularly provided with guide grooves 9 at ninety degrees, the interior of the guide groove 9 is movably connected to a round rod 11, the end of the round rod 11 away from the rotating cylinder 8 is fixedly connected to a square block 10, the side of the square block 10 close to the hinged shaft 5 is fixedly connected to a clamping block 12, and the outer wall of the support base 2 is threadedly connected to two threaded rods 13.

[0021] The above solution is adopted: the articulated shaft 5 and the needle bearing 6 are widened and lengthened, thereby effectively enhancing the rigidity and torque resistance of the articulated shaft 5, and a guide groove 9 is opened on one side of the rotating drum 8, so that when the rotating drum 8 rotates, it drives the round rod 11 along the trajectory of the guide groove 9 to drive the square block 10 to move toward the articulated shaft 5, and then drives the clamping block 12 to be stuck in the inside of the annular groove of the articulated shaft 5, thereby axially limiting the articulated shaft 5, and preventing the articulated shaft 5 from moving or shaking inside the support seat 2, thereby improving the stability of the overall operation of the drawing frame.

[0022] like Figures 1 to 3 As shown, gaskets 7 are fixedly connected on both sides of the bottom ends of the front pressure roller seat 3. The gaskets 7 are made of plastic material. The gaskets 7 are used to seal the two ends of the needle bearing 6. The hinge shaft 5 and the needle bearing 6 both pass through the outer wall of the support seat 2 and extend to the outside of the support seat 2. The front pressure roller seat 3 and the hinge shaft 5 are connected through the needle bearing 6. The inner wall of the support seat 2 is annularly opened at ninety degrees with a circular hole that is compatible with the block 12. The block 12 is retracted to the inside of the support seat 2 in the initial state.

[0023] The above solution is adopted: the two ends of the needle roller bearing 6 are sealed by the gasket 7. Its function is that in an industrial environment, the air may contain impurities such as dust, particles, and fibers. If these impurities enter the interior of the needle roller bearing 6, wear will occur between the rolling elements and the raceway of the needle roller bearing 6, thereby reducing the service life of the needle roller bearing 6. The design of the gasket 7 can form an effective barrier for the two exposed ends of the needle roller bearing 6, thereby preventing external impurities from entering the interior of the needle roller bearing 6, thereby protecting the precise structure of the needle roller bearing 6.

[0024] like Figures 1 to 4 As shown, the hinge shaft 5 and the needle bearing 6 are widened and lengthened. A group of annular grooves are symmetrically provided on the outer wall of the hinge shaft 5. After the square block 10 moves toward the hinge shaft 5, it drives the clamping block 12 to be clamped into the inside of the annular groove. A circular groove is provided on the surface of the square block 10 near the side of the threaded rod 13. One end of the threaded rod 13 is movably clamped in the inside of the circular groove of the square block 10. A plurality of square grooves that cooperate with the square block 10 are provided on the inner wall of the support seat 2. When the rotating drum 8 rotates, the square grooves are used to circumferentially limit the square block 10.

[0025] The above solution is adopted: the articulated shaft 5 and the needle roller bearing 6 are widened and lengthened. The effect is that, since the stiffness of the articulated shaft 5 mainly depends on the moment of inertia of its cross section, the increase in width and height will increase the moment of inertia, thereby improving the bending stiffness and torsional strength of the articulated shaft 5. At the same time, the widened and lengthened needle roller bearing 6 can provide a larger contact area, so that it can withstand higher radial and axial loads, thereby ensuring the normal operation of the drawing frame under high load.

[0026] The working principle and use process of the present invention are as follows: the operator inserts the hinge shaft 5 into the support seat 2, and connects the front pressure roller seat 3 to the two ends of the hinge shaft 5 through the needle bearing 6. Then, by rotating the threaded rod 13, one end of the threaded rod 13 rotates inside one of the square blocks 10, and drives the square block 10 to move toward the direction of the hinge shaft 5. When the square block 10 close to the threaded rod 13 moves, it drives the round rod 11 on one side to slide along the track of the guide groove 9, and then passes through the round rod 11. The cooperation between the drum 8 and the guide groove 9 causes the drum 8 to rotate. While the drum 8 rotates, it drives the other three round rods 11 to slide along the track of the guide groove 9, and then the four square blocks 10 drive the four clamping blocks 12 to move toward the direction of the hinge shaft 5. When the round rod 11 abuts the inner wall of the guide groove 9, the clamping block 12 is stuck in the inside of the annular groove of the hinge shaft 5, thereby axially limiting the hinge shaft 5, thereby preventing the hinge shaft 5 from moving or shaking inside the support seat 2, thereby enhancing the stability of the drawing frame operation.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A front pressure roller shaft hinge mechanism, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support seat (2), and the support seat (2) is movably connected to a hinged shaft (5) inside. Both ends of the hinged shaft (5) are sleeved with needle bearings (6), and the outer surface of the needle bearing (6) is fixedly connected to a front pressure roller seat (3), and a front pressure roller body (4) is arranged inside the front pressure roller seat (3). The interior of the support seat (2) is symmetrically and movably connected to two rotating cylinders (8), and guide grooves (9) are provided in an annular manner at ninety degrees on opposite sides of the two rotating cylinders (8). A round rod (11) is movably connected inside the guide groove (9), and the end of the round rod (11) away from the rotating cylinder (8) is fixedly connected to a square block (10), and the side of the square block (10) close to the hinged shaft (5) is fixedly connected to a clamping block (12). The outer wall of the support seat (2) is threadedly connected to two threaded rods (13).

2. The front pressure roller shaft hinge mechanism according to claim 1, characterized in that: Gaskets (7) are fixedly connected to both sides of the bottom ends of the front pressure roller seat (3), and the gaskets (7) are made of plastic material. The gaskets (7) are used to seal the two ends of the needle roller bearing (6).

3. The front pressure roller shaft hinge mechanism according to claim 1, characterized in that: The hinged rotating shaft (5) and the needle bearing (6) both penetrate the outer wall of the support seat (2) and extend to the outside of the support seat (2); the front pressure roller seat (3) and the hinged rotating shaft (5) are connected via the needle bearing (6).

4. The front pressure roller shaft hinge mechanism according to claim 1, characterized in that: The inner wall of the support seat (2) is provided with circular holes at ninety degrees, which are adapted to the clamping block (12). In the initial state, the clamping block (12) is retracted into the interior of the support seat (2).

5. The front pressure roller shaft hinge mechanism according to claim 1, characterized in that: The hinge shaft (5) and the needle bearing (6) are both widened and lengthened. A group of annular grooves are symmetrically provided on the outer wall of the hinge shaft (5). When the square block (10) moves toward the hinge shaft (5), it drives the clamping block (12) to be clamped into the inner part of the annular groove.

6. The front pressure roller shaft hinge mechanism according to claim 1, characterized in that: A circular groove is provided on the surface of the square block (10) near one side of the threaded rod (13), and one end of the threaded rod (13) is movably engaged with the inside of the circular groove of the square block (10).

7. The front pressure roller shaft hinge mechanism according to claim 1, characterized in that: The inner wall of the support seat (2) is provided with a plurality of square grooves that match the square blocks (10). When the rotating drum (8) rotates, the square grooves are used to circumferentially limit the square blocks (10).

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