A tool beam adjustment assembly with position locking function

Abstract

This application discloses a knife beam adjustment assembly with a position locking function, relating to the field of paper processing equipment. The adjustment assembly includes a base for slidingly mounting the knife beam body, a pneumatic actuator mounted on the base, and a connecting part mounted on the knife beam body. The pneumatic actuator has a self-locking function and is connected to the connecting part via a wedge transmission mechanism. When the pneumatic actuator extends or retracts, it drives the connecting part to move, thereby adjusting and maintaining the position of the knife beam. This adjustment assembly can eliminate the impact of pneumatic system accuracy decay on repeatability and can also counteract processing reaction forces through the mechanical locking unit, thereby ensuring the absolute positional stability of the knife beam under working load.

Description

Technical Field

[0001] This application relates to the field of paper processing equipment, and in particular to a knife beam adjustment assembly with a position locking function. Background Technology

[0002] In the field of paper processing equipment, the cutter head adjustment assembly is an essential component. Current technology commonly uses cylinders as the drive source. By arranging the cylinder's extension and retraction axis coaxially with the cutter head adjustment direction, the cylinder's extension and retraction motion is directly converted into linear displacement of the cutter head. While this structure achieves basic position adjustment, it has significant technical drawbacks in practical applications. Specifically, the cylinder drive system needs to simultaneously meet the dual performance requirements of high-precision positioning and high-load holding, forcing the selection of high-specification cylinders with high-precision sensors, significantly increasing equipment manufacturing costs.

[0003] Further analysis revealed a fundamental deficiency in the mechanical stability of the existing structure. Because the cylinder itself lacks a rigid locking function, the cutter beam is highly susceptible to positional shifts or axial runout during operation when subjected to material cutting reaction forces, equipment vibration, or fluctuations in air pressure. This phenomenon is particularly pronounced under continuous machining conditions. The root cause lies in the lack of a mechanical locking mechanism in the purely pneumatic drive system, preventing the formation of a stable, rigid support structure. More seriously, when the thickness or hardness of the processed material changes, unexpected displacement of the cutter beam directly leads to uneven cut depth, edge burrs, and other quality problems, potentially even causing abnormal tool wear or workpiece scrap. These issues force operators to frequently perform position calibration, reducing production efficiency and increasing the uncertainty caused by manual intervention. Utility Model Content

[0004] The purpose of this application is to overcome at least one deficiency of the prior art and provide a tool beam adjustment assembly with a position locking function. This adjustment assembly can eliminate the influence of pneumatic system accuracy decay on repeatability and can also counteract machining reaction force through a mechanical locking unit, thereby ensuring the absolute positional stability of the tool beam under working load.

[0005] To achieve the above objectives, this application discloses a blade beam adjustment assembly with a position locking function. The adjustment assembly includes a base for slidingly mounting the blade beam body, a pneumatic actuator mounted on the base, and a connecting part mounted on the blade beam body. The pneumatic actuator has a self-locking function and is connected to the connecting part through a wedge transmission mechanism. When the pneumatic actuator extends or retracts, it drives the connecting part to move, thereby adjusting and maintaining the position of the blade beam.

[0006] Furthermore, a sliding fit is formed between the base and the blade beam body to achieve linear movement of the blade beam body. Preferably, the sliding fit between the base and the blade beam body is achieved through a linear guide rail structure.

[0007] Furthermore, the inclined wedge transmission mechanism includes an inclined drive unit mounted on the movable end of the pneumatic actuator and an inclined guide groove disposed on the connecting part. The inclined drive unit is inserted into the inclined guide groove pre-set on the connecting part. When the pneumatic actuator moves telescopically, the drive unit and the inclined guide groove work together to drive the blade beam body to slide along the base. Preferably, the inclined drive unit is an inclined slide rod.

[0008] Furthermore, the blade beam body is horizontally slidably mounted on the base, and the pneumatic actuator is vertically mounted on the base. The movable end of the pneumatic actuator moves in a vertical direction, converting the vertical driving force into a horizontal thrust through the wedge transmission mechanism, thereby driving the blade beam body to slide in a horizontal direction.

[0009] Furthermore, the self-locking of the pneumatic actuator is achieved through a normally closed electrically controlled check valve. Specifically, a normally closed electrically controlled check valve is installed at the connection between the main air supply line and the pneumatic chamber of the pneumatic actuator, with the valve's conduction direction aligned with the compressed air input direction. When the electrically controlled check valve is energized, compressed air enters the pneumatic chamber through the check valve, pushing the piston outward; in the non-operating state, the electrically controlled check valve is de-energized and closed, and the compressed air within the sealed chamber forms an air cushion damping effect. This pneumatic self-locking mechanism is integrated with the wedge transmission mechanism.

[0010] The mechanical self-locking mechanism works together to ensure the positional stability of the blade beam body under external impact loads or unexpected interruption of the air supply.

[0011] Compared with the prior art, this application has at least one of the following beneficial technical effects:

[0012] 1. The blade beam adjustment assembly of this application combines a pneumatic actuator with a wedge transmission mechanism to convert the vertical motion of the pneumatic actuator into the horizontal displacement of the blade beam body, thereby eliminating the influence of pneumatic system accuracy decay on repetitive positioning and improving the accuracy of blade beam position adjustment.

[0013] 2. The pneumatic actuator has a self-locking function. Through the normally closed electrically controlled check valve and the pneumatic self-locking mechanism, it works together with the mechanical self-locking of the wedge transmission mechanism to effectively counteract the processing reaction force, ensure the absolute positional stability of the cutter beam under working load, and avoid the displacement of the cutter beam caused by air source pressure fluctuations or external impact loads.

[0014] 3. The structural design of this application avoids the reliance on high-specification cylinders and high-precision sensors in the prior art, reduces equipment manufacturing costs, and reduces manual intervention and production efficiency losses caused by frequent position calibration.

[0015] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0016] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment disclosed in this application.

[0018] Figure 2 This is a schematic diagram of the structure of one embodiment disclosed in this application from another perspective.

[0019] Figure 3 This is a structural schematic diagram of one embodiment disclosed in this application from another perspective. Detailed Implementation

[0020] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0021] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0022] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0023] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0024] See attached document Figures 1 to 3 This embodiment provides an exemplary structure of a knife beam adjustment assembly with a position locking function, which is suitable for applications such as paper processing equipment that require high-precision knife beam position control.

[0025] This assembly mainly consists of a base 1, a pneumatic actuator 2, a cutter head body 3, a connecting part 4, and a wedge transmission mechanism. Through precise mechanical coordination and pneumatic control, the components achieve accurate adjustment and reliable locking of the cutter head. The following provides a detailed description of each component and their interrelationships.

[0026] Specifically, the base 1 serves as a support structure for fixed connection with external equipment, such as a grooving machine or a slitting machine. In this embodiment, the base 1 is made of a high-rigidity material, and its surface is provided with a linear guide rail structure for sliding engagement with the blade beam body 3. The design of the base 1 ensures stable sliding of the blade beam body 3 in the horizontal direction. The specific installation method and material selection of the base 1 are well-known techniques to those skilled in the art and will not be described in detail here.

[0027] See the attached drawings for details. In this embodiment, two bases 1 are respectively disposed at both ends of the blade beam body 3.

[0028] In this embodiment, two pneumatic actuators 2 are respectively mounted on two bases 1 and move synchronously. Their cylinders are connected to the bases 1 by bolts, and their piston rods are connected to the wedge transmission mechanism. The pneumatic actuator 2 is vertically positioned, with its movable end extending and retracting in the vertical direction. The selection of the pneumatic actuator 2 is based on the thrust and speed requirements for adjusting the blade beam. In this embodiment, the selected pneumatic actuator 2 possesses characteristics of rapid response and high-precision control. Its specific selection method and installation process fall within the scope of existing technology, and those skilled in the art can select and operate it according to actual needs.

[0029] In this embodiment, the connecting part 4 is mounted on the blade beam body 3 for cooperating with the wedge transmission mechanism. The connecting part 4 is provided with an inclined guide groove 5 that constitutes the wedge transmission mechanism, and the slope of the inclined guide groove 5 matches the inclined drive part 6 in the wedge transmission mechanism.

[0030] To facilitate understanding of this embodiment, more specifically, the wedge transmission mechanism is the core component for adjusting the position of the cutter head body 3, and consists of an inclined drive unit 6 and an inclined guide groove 5. The inclined drive unit 6 is installed at the movable end of the pneumatic actuator unit 2 and uses a smooth inclined slide rod. The inclined guide groove 5 is provided on the connecting part 4, forming a wedge structure that cooperates with the inclined slide rod. When the piston rod of the pneumatic actuator unit 2 extends or retracts, the inclined slide rod slides in the inclined guide groove 5, converting the vertical movement of the pneumatic actuator unit 2 into the horizontal displacement of the cutter head body 3. The slope design of this transmission mechanism has been optimized to achieve high transmission efficiency and low friction loss, while ensuring uniform and stable force transmission during cutter head adjustment.

[0031] More specifically, the pneumatic actuator 2 adopts a standard cylinder structure, including a cylinder body, piston, piston rod, and related seals and guide components. The cylinder body is fixedly mounted on the base 1 by bolts, and the extension and retraction movements of the piston rod are achieved by pneumatic drive. The end of the piston rod, as the movable end, is connected to the inclined drive part 6 of the inclined wedge transmission mechanism, thereby transmitting the linear motion of the pneumatic actuator 2 to the knife beam body 3.

[0032] It is important to understand that the self-locking function of the pneumatic actuator 2 is achieved through a normally closed electrically controlled check valve. Specifically, a normally closed electrically controlled check valve (not shown in the figure) is installed at the connection between the main air supply line and the cylinder body. The conduction direction of this check valve is consistent with the input direction of compressed air. When the electrically controlled check valve is energized, the valve core opens, and compressed air smoothly enters the cylinder body through the check valve, pushing the piston outward against the spring force or load force, thereby moving the blade beam body 3. In the non-working state where the position of the blade beam body 3 needs to remain unchanged, the electrically controlled check valve is de-energized, and the valve core closes under the action of spring force or air pressure, thereby sealing the compressed air in the cylinder body and forming an air cushion damping effect. At this time, the compressed air pressure in the cylinder body generates a reverse force, effectively locking the axial displacement of the piston rod and preventing changes in the blade beam position caused by external impact loads or unexpected interruption of the air supply.

[0033] Through the above design, the pneumatic actuator 2 not only provides stable driving force to ensure precise adjustment of the cutter beam body 3, but also combines with the mechanical self-locking function of the wedge transmission mechanism to form a double insurance mechanism. This significantly improves the positional stability of the cutter beam body 3 during processing and reduces the risk of processing errors caused by external interference. The synergistic effect of this pneumatic self-locking mechanism and mechanical self-locking demonstrates good reliability and stability in practical applications, making it particularly suitable for paper processing equipment with high precision requirements.

[0034] In practical applications of paper processing equipment, such as high-speed paper cutters, this blade adjustment assembly demonstrates significant advantages. Its pneumatic self-locking mechanism, combined with the mechanical self-locking function of the wedge drive mechanism, effectively prevents blade displacement caused by cutting reaction forces, equipment vibration, or fluctuations in air pressure, ensuring uniform cut depth and clean, burr-free edges. Compared to traditional blade adjustment assemblies, this embodiment significantly reduces tool wear and workpiece scrap rates under continuous processing conditions, lowers equipment maintenance costs and the frequency of manual intervention, and improves production efficiency and processing quality.

[0035] The blade beam adjustment assembly in this embodiment achieves high-precision adjustment and reliable locking of the blade beam position through optimized structural design and precise mechanical coordination. This assembly meets the high-performance requirements of modern paper processing equipment for blade beam adjustment assemblies, and is particularly suitable for complex processing scenarios with high requirements for processing accuracy and stability. For those skilled in the art, parts not described in detail, such as the specific installation process of the base and the manufacturing details of the blade beam body connection, can be implemented based on existing technology and common knowledge.

[0036] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. A knife beam adjustment assembly with a position lock function, characterized by, The adjustment assembly includes a base for slidingly mounting the blade beam body, a pneumatic actuator mounted on the base, and a connecting part mounted on the blade beam body. The pneumatic actuator has a self-locking function and is connected to the connecting part through a wedge transmission mechanism. When the pneumatic actuator extends or retracts, it drives the connecting part to move, thereby adjusting and maintaining the position of the blade beam.

2. The blade beam adjustment assembly with position locking function as described in claim 1, characterized in that, The base and the blade beam body form a sliding fit to achieve linear movement of the blade beam body; the base and the blade beam body achieve a sliding fit through a linear guide rail structure.

3. The blade beam adjustment assembly with position locking function as described in claim 1, characterized in that, The inclined wedge transmission mechanism includes an inclined drive unit installed at the movable end of the pneumatic actuator and an inclined guide groove installed on the connecting part. The inclined drive unit is inserted into the inclined guide groove pre-set on the connecting part. When the pneumatic actuator moves telescopically, the drive unit and the inclined guide groove work together to drive the blade beam body to slide along the base.

4. A blade beam adjustment assembly with position locking function as described in claim 3, characterized in that, The inclined drive unit is an inclined slide bar.

5. A blade beam adjustment assembly with position locking function as described in claim 1, characterized in that, The blade beam body is horizontally slidably mounted on the base, and the pneumatic actuator is vertically mounted on the base. The movable end of the pneumatic actuator moves in a vertical direction, and the vertical driving force is converted into a horizontal thrust through the wedge transmission mechanism, driving the blade beam body to slide in a horizontal direction.

6. A blade beam adjustment assembly with position locking function as described in claim 1, characterized in that, The self-locking of the pneumatic actuator is achieved by a normally closed electrically controlled check valve. Specifically, a normally closed electrically controlled check valve is provided at the connection between the main air supply line and the pneumatic chamber of the pneumatic actuator, and the conduction direction of the check valve is consistent with the compressed air input direction.

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