A press wheel height gradient adjustment mechanism

Abstract

The utility model discloses a kind of pressure wheel height gradient adjusting mechanism, including slitting machine, rotatingly arranged with pressure wheel in slitting machine cavity, height gradient adjusting mechanism is arranged at both ends of pressure wheel, height gradient adjusting mechanism includes adjusting base, two sets of adjusting bearings are arranged on adjusting base, adjusting screw is rotatably arranged between two sets of adjusting bearings, adjusting screw is provided with the ball nut seat matched therewith, support bearing is provided in slitting machine cavity inner wall, epitaxial axle is provided in support bearing, support arm is rotatably arranged in epitaxial axle end, roller is rotatably arranged in support arm one end, roller and ball nut seat upper surface resist, mounting bearing is provided on support arm, pressure wheel is placed between two sets of mounting bearings;The utility model pressure wheel height gradient adjusting mechanism can not only realize the accurate gradient adjustment of pressure wheel height, ensure that material is evenly pressed during slitting process, also have the adjustment operation convenient stability, effectively improve the adaptability and slitting quality of slitting machine to different materials.

Description

Technical Field

[0001] This utility model belongs to the field of pressure roller technology for slitting machines, and particularly relates to a pressure roller height gradient adjustment mechanism. Background Technology

[0002] In the membrane material production industry, slitting machines (also known as cutting machines) are key material cutting equipment, undertaking the core task of accurately dividing wide rolls of material into narrow strips. Their operating accuracy directly determines the product quality and processing efficiency of downstream production processes. During operation, to avoid problems such as roll material deviation, wrinkles, or rough edges due to tension fluctuations, pressure roller structures are usually configured upstream or downstream of the cutting components. By forming a stable contact with the surface of the roll material, the pressure rollers can, on the one hand, help control the conveying tension of the roll material, ensuring that the roll material always maintains a flat conveying posture, and on the other hand, position and guide the narrow strips after cutting, preventing the strips from deviating during subsequent conveying. They are an important core component to ensure the continuous and stable operation of the slitting machine.

[0003] However, the pressure roller mounting and adjustment mechanism currently used in slitting machines has obvious performance defects in practical applications, making it difficult to meet the production requirements of high precision and high stability. These defects are mainly reflected in the following two aspects:

[0004] Firstly, the adjustment precision is insufficient, making it difficult to achieve gradient height control. Existing pressure roller adjustments mostly adopt simple structures such as direct bolt pushing or spring reset. During the adjustment process, only rough adjustments can be made by manually observing the state of the roll material. It is impossible to accurately control the height difference between the two ends of the pressure roller. When processing roll materials with special tension requirements (such as thin metal foil and high-strength film), the pressure roller needs to present a specific height gradient to adapt to the tension distribution of the roll material. This can easily lead to uneven force on both ends of the pressure roller, which in turn can cause local crushing or tension imbalance of the roll material, seriously affecting the product cutting accuracy.

[0005] Secondly, the adjustment stability is poor, and the accuracy is prone to drift during long-term operation. Although some pressure roller adjustment mechanisms have a preliminary height adjustment function, they lack reliable positioning and locking. After adjustment, the mechanism is prone to loosening under equipment vibration or long-term stress, which causes the pressure roller height position to shift. Frequent shutdowns and recalibration are required, which greatly reduces production efficiency.

[0006] In summary, the shortcomings of existing slitting machine pressure roller installation and adjustment mechanisms in terms of adjustment accuracy and operational stability have become key bottlenecks restricting the improvement of slitting machine processing accuracy and production efficiency optimization. There is an urgent need to develop a pressure roller height adjustment structure that can achieve precise gradient adjustment and has stable operating performance to meet the increasingly stringent technical requirements of modern industry for slitting machine equipment. Utility Model Content

[0007] The purpose of this utility model is to provide a pressure roller height gradient adjustment mechanism to solve the problems of insufficient adjustment accuracy of existing slitting machine pressure roller installation and adjustment mechanisms, which cannot achieve precise height gradient control at both ends of the pressure roller, lack of reliable positioning and locking after adjustment, and easy accuracy drift due to equipment vibration or stress during long-term operation.

[0008] The present invention achieves the above objectives through the following technical solution: a pressure roller height gradient adjustment mechanism, including a slitting machine, wherein a pressure roller is rotatably disposed in the cavity of the slitting machine, and height gradient adjustment mechanisms are provided at both ends of the pressure roller, wherein the height gradient adjustment mechanisms are fixed to the inner wall of the cavity of the slitting machine;

[0009] The height gradient adjustment mechanism includes an adjustment base fixed to the inner wall of the slitting machine cavity. Two sets of adjustment bearings are arranged opposite each other on the adjustment base. An adjustment screw is rotatably arranged between the two sets of adjustment bearings. A ball bearing seat is provided on the adjustment screw to cooperate with it. The upper surface of the ball bearing seat is inclined. A support bearing is provided on the inner wall of the slitting machine cavity on one side above the ball bearing seat. An extension shaft is provided inside the support bearing. A follower bearing is fixedly provided at the end of the extension shaft. A support arm is fixedly provided on the follower bearing. A roller is rotatably provided at one end of the support arm. The roller abuts against the upper surface of the ball bearing seat. A mounting bearing is provided on the support arm. The pressure roller is placed between the two sets of mounting bearings.

[0010] Furthermore, a dial indicator is provided on the side wall of the adjustment base, and the dial indicator's detection pointer abuts against the bottom of the support arm.

[0011] Furthermore, a shock-absorbing pad is provided at the mounting point between the adjusting base and the inner wall of the slitting machine cavity. The shock-absorbing pad is made of nitrile rubber material with a thickness of 2-5mm.

[0012] Furthermore, an adjustment handle is fixedly provided at one end of the adjustment screw extending from the adjustment base, and the outer circumferential surface of the adjustment handle is provided with anti-slip texture.

[0013] Furthermore, the lower sidewall of the ball nut seat forms a sliding guide fit with the sidewall of the adjusting base.

[0014] Furthermore, the inclined surface of the upper surface of the ball nut seat has an angle of 15°-30° with the horizontal plane, and a limit protrusion is provided on the edge of the inclined surface.

[0015] Furthermore, the outer circumferential surface of the roller is covered with a wear-resistant rubber layer.

[0016] Beneficial effects: This utility model has a reasonable design, simple and stable structure, and strong practicality, and has the following beneficial effects:

[0017] 1. Achieve high-precision gradient adjustment: By adjusting the screw and the ball nut seat with precision, combined with the inclined surface design of the upper surface of the ball nut seat, the lifting height of the support arm can be precisely controlled, thereby achieving precise adjustment of the height gradient at both ends of the pressure roller, meeting the specific requirements of different roll materials for the height gradient of the pressure roller;

[0018] 2. Improved adjustment stability: The stable support of the adjusting bearing for the adjusting screw, the sliding guide fit between the ball nut seat and the adjusting base, and the self-locking characteristics of the adjusting screw and the ball nut seat after adjustment effectively prevent the mechanism from loosening and shifting position under equipment vibration or long-term stress, reducing the need for frequent shutdowns for calibration.

[0019] 3. Convenient and intuitive adjustment: The adjustment handle is designed for easy manual adjustment by the operator, and the dial indicator can display the position change of the support arm in real time, making the adjustment process more intuitive and controllable and reducing the difficulty of operation;

[0020] 4. Enhanced durability: The wear-resistant rubber layer on the outer circumference of the roller improves the wear resistance of the components, the nitrile rubber shock-absorbing pads reduce the impact of equipment vibration on the mechanism, and the limiting protrusions prevent excessive movement of the roller. These designs all extend the service life of the mechanism. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the height gradient adjustment mechanism of this utility model.

[0023] In the diagram: 1-Slitting machine, 2-Pressure roller, 3-Height gradient adjustment mechanism;

[0024] 301-Adjusting base, 302-Adjusting bearing, 303-Adjusting screw, 304-Ball nut seat, 305-Support bearing, 306-Extended shaft, 307-Follower bearing, 308-Support arm, 309-Roller, 3010-Mounting bearing, 3011-Dial indicator, 3012-Adjusting handle. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1:

[0027] Combination Figure 1-2The pressure roller height gradient adjustment mechanism shown includes a slitting machine 1. A pressure roller 2 is installed in the cavity of the slitting machine 1 by means of rotational engagement. The pressure roller 2 is used to form a stable contact with the film material during the slitting process to ensure the flatness of the roll material conveying posture. In order to achieve precise control of the height difference between the two ends of the pressure roller 2, a height gradient adjustment mechanism 3 is independently configured at both ends of the pressure roller 2. The two sets of height gradient adjustment mechanisms 3 are symmetrically fixed to the inner walls of both sides of the cavity of the slitting machine 1. The horizontal or gradient height setting of the pressure roller 2 can be achieved by adjustment.

[0028] The core supporting component of the height gradient adjustment mechanism 3 is the adjustment base 301 fixed to the inner wall of the slitting machine 1 cavity. This adjustment base 301 provides a rigid mounting reference for the entire adjustment mechanism. Two sets of adjustment bearings 302 are arranged opposite each other in the horizontal direction of the adjustment base 301. The inner rings of the two sets of adjustment bearings 302 form a rotational support with the adjustment screw 303 through an interference fit, allowing the adjustment screw 303 to rotate freely around its own axis while maintaining a stable radial position. The outer circumferential surface of the adjustment screw 303 is machined with precision threads, forming a helical transmission engagement with the ball nut seat 304 sleeved on it. Through thread engagement, the rotational motion of the adjustment screw 303 is converted into the horizontal linear motion of the ball nut seat 304. The upper surface of the ball nut seat 304 is precision machined to form an inclined surface. This inclined surface serves as a transmission structure for height adjustment, and its inclination angle determines the conversion ratio between horizontal displacement and height change. On the inner wall of the slitting machine 1 cavity on one side above the ball nut seat 304, a support bearing 305 is fixedly installed. The inner ring of the support bearing 305... An extension shaft 306 is fitted onto the ring via an transition fit. A follower bearing 307 is fixed to the extended end of the extension shaft 306 via a tightening mechanism. The outer ring of the follower bearing 307 is rigidly connected to one end of the support arm 308, allowing the support arm 308 to swing up and down with the follower bearing 307 as a fulcrum. A roller 309 is rotatably mounted on the end of the support arm 308 away from the follower bearing 307 via a pin. The outer circumferential surface of the roller 309 maintains close contact with the inclined surface of the ball nut seat 304. When the ball nut seat 304... 4. When moving horizontally, the inclined plane drives the roller 309 to roll through friction and simultaneously pushes the support arm 308 to rotate around the fulcrum. At the middle position of the support arm 308, a mounting bearing 3010 is fixedly installed. The mounting bearings 3010 of the two sets of height gradient adjustment mechanisms 3 together form support for both ends of the pressure roller 2. When the support arm 308 swings up and down, the mounting bearing 3010 drives the pressure roller 2 to complete the height adjustment. By controlling the rotation of the adjusting screws 303 at both ends respectively, the height gradient setting at both ends of the pressure roller 2 can be achieved.

[0029] In this embodiment, a dial indicator 3011 is horizontally fixed to the side wall of the adjustment base 301 facing the support arm 308 via a bracket. The detection pointer of the dial indicator 3011 extends vertically upward, and its end is in close contact with the bottom of the support arm 308. When the support arm 308 swings up and down around the follower bearing 307, the bottom of the support arm 308 will synchronously push the detection pointer of the dial indicator 3011 to produce axial displacement. Through the change of the rotation angle of the dial indicator 3011 pointer, the operator can directly read the real-time height change of the support arm 308, providing a quantitative reference for the height adjustment of the pressure roller 2, ensuring the precise matching of the adjustment amounts at both ends, thereby achieving precise control of the height gradient of the pressure roller 2.

[0030] In this embodiment, to reduce the impact of vibration during the operation of the slitting machine 1 on the height gradient adjustment mechanism 3, a damping pad is also embedded between the installation contact surface of the adjustment base 301 and the inner wall of the slitting machine 1 cavity. The damping pad is integrally molded from nitrile rubber material, and its thickness is strictly controlled within the range of 2-5mm. This thickness range can ensure that the damping pad has sufficient elastic deformation space to absorb vibration, and can also avoid the positional displacement of the adjustment base 301 after installation due to excessive thickness, thus ensuring the overall installation accuracy of the height gradient adjustment mechanism 3.

[0031] In this embodiment, to facilitate the operator's rotation control of the adjusting screw 303, one end of the adjusting screw 303 away from the two sets of adjusting bearings 302 extends through and out of the outer wall of the adjusting base 301, and an adjusting handle 3012 is assembled at this extended end. This structure ensures that a rigid connection without relative rotation is formed between the adjusting handle 3012 and the adjusting screw 303. When the operator rotates the adjusting handle 3012, the torque can be directly and losslessly transmitted to the adjusting screw 303. At the same time, to prevent the operator's hand from slipping when rotating the adjusting handle 3012 and to ensure the stability and controllability of the adjustment process, the outer peripheral surface of the adjusting handle 3012 is knurled with uniformly distributed anti-slip texture.

[0032] In this embodiment, the lower two side walls of the ball nut seat 304 are precision ground to form smooth guide surfaces, which form a sliding guide structure with clearance fit with the inner side wall of the corresponding position of the adjusting base 301. This fit relationship, through the preset fit gap, not only avoids the jamming caused by interference contact between the two, but also restricts the radial movement of the ball nut seat 304 during horizontal movement.

[0033] In this embodiment, the angle between the upper surface of the ball nut seat 304 and the horizontal plane is controlled within the range of 15°-30°. This angle range is designed based on the balance between motion conversion efficiency and adjustment accuracy, and can also maintain a reasonable positive pressure between the roller 309 and the inclined surface to ensure the smoothness of power transmission. At the same time, at the two ends of the inclined surface, there are integrally formed upward protruding limiting protrusions. The limiting protrusions will physically block the rolling range of the roller 309, preventing the roller 309 from slipping off the edge of the inclined surface due to excessive adjustment, thereby preventing the support arm 308 from swinging excessively due to loss of support.

[0034] In this embodiment, to optimize the contact fit performance between the roller 309 and the inclined surface of the ball nut seat 304, the outer circumferential surface of the roller 309 is fitted with an interference fit and a layer of integrally molded wear-resistant rubber is tightly fitted.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure roller height gradient adjustment mechanism, comprising a slitting machine (1), wherein a pressure roller (2) is rotatably disposed within the cavity of the slitting machine (1), characterized in that: Both ends of the pressure roller (2) are provided with height gradient adjustment mechanisms (3), and the height gradient adjustment mechanisms (3) are fixed to the inner wall of the cavity of the slitting machine (1); The height gradient adjustment mechanism (3) includes an adjustment base (301) fixed to the inner wall of the cavity of the slitting machine (1). Two sets of adjustment bearings are arranged opposite each other on the adjustment base (301). An adjustment screw (303) is rotatably arranged between the two sets of adjustment bearings. A ball nut seat (304) is provided on the adjustment screw (303) to cooperate with it. The upper surface of the ball nut seat (304) is an inclined plane. A support bearing (305) is provided on the inner wall of the cavity of the slitting machine (1) on one side above the ball nut seat (304). An extension shaft (306) is provided inside the support bearing (305). A follower bearing (307) is fixedly provided at the end of the extension shaft (306). A support arm (308) is fixedly provided on the follower bearing (307). A roller (309) is rotatably provided at one end of the support arm (308). The roller (309) abuts against the upper surface of the ball nut seat (304). An mounting bearing (3010) is provided on the support arm (308). The pressure roller (2) is placed between the two sets of mounting bearings (3010).

2. The pressure roller height gradient adjustment mechanism according to claim 1, characterized in that: A dial indicator (3011) is provided on the side wall of the adjustment base (301), and the detection pointer of the dial indicator (3011) abuts against the bottom of the support arm (308).

3. The pressure roller height gradient adjustment mechanism according to claim 2, characterized in that: A shock-absorbing pad is provided at the mounting point between the adjusting base (301) and the inner wall of the slitting machine (1). The shock-absorbing pad is made of nitrile rubber material with a thickness of 2-5mm.

4. The pressure roller height gradient adjustment mechanism according to claim 3, characterized in that: An adjustment handle (3012) is fixedly provided at one end of the adjustment screw (303) extending from the adjustment base (301), and the outer circumferential surface of the adjustment handle (3012) is provided with anti-slip texture.

5. The pressure roller height gradient adjustment mechanism according to claim 4, characterized in that: The lower sidewall of the ball nut seat (304) and the sidewall of the adjusting base (301) form a sliding guide fit.

6. The pressure roller height gradient adjustment mechanism according to claim 5, characterized in that: The inclined surface of the upper surface of the ball nut seat (304) has an angle of 15°-30° with the horizontal plane, and a limit protrusion is provided on the edge of the inclined surface.

7. The pressure roller height gradient adjustment mechanism according to claim 6, characterized in that: The outer circumferential surface of the roller (309) is covered with a wear-resistant rubber layer.

Images