A self-centering quick-release roller bracket based on a laser puncher and a mounting and dismounting method thereof

Abstract

The application relates to the technical field of mechanical design of laser drilling equipment, in particular to a self-centering quick disassembly type roller bracket based on a laser drilling machine and a mounting and dismounting method thereof, which comprises a bracket frame and a plurality of rollers mounted on the bracket frame. The two ends of the rollers are processed into tapered tips, and the inner holes of the shaft sleeves matched with the tapered tips are provided with corresponding tapered grooves; one side of the shaft sleeve is an axially slidable structure and is locked and positioned through a jackscrew. During installation, the axially extruding force is generated by pushing the slidable shaft sleeve, the tapered tips are wedge-tightly matched with the tapered grooves, and the self-centering of the rollers is realized; during dismounting, only the jackscrew needs to be loosened and the shaft sleeve needs to be retreated, and then a single roller can be taken out without affecting other rollers. Compared with the prior art, while realizing the single-piece independent dismounting, the application significantly improves the rotating coaxiality and positioning accuracy by means of the tapered surface cooperation, and greatly shortens the equipment downtime.

Description

Technical Field

[0001] This invention belongs to the field of mechanical design technology for laser drilling equipment, and relates to a self-centering quick-release roller bracket based on a laser drilling machine and its installation and disassembly method. Background Technology

[0002] In the workflow of a laser drilling machine, the roller support, as the core supporting component of the material conveying system, directly determines the positioning accuracy of laser processing and the consistency of finished product quality through its stable operation and assembly precision. As processing speed increases, the dynamic response requirements of the material to the support also increase.

[0003] However, existing laser drilling machine roller supports suffer from significant technical bottlenecks during long-term operation and maintenance. Traditional supports typically employ an integral fixed structure, leading to severe structural coupling. If any roller requires maintenance due to wear, contamination, or bearing failure, operators must disassemble the entire support frame to access the target component. Furthermore, the integral structure limits the disassembly and assembly process, involving repetitive operations with numerous fasteners, consuming significant manpower and directly causing prolonged equipment downtime. In modern production lines demanding high uptime, this inefficient maintenance method greatly increases production costs and operational pressure. From a mechanical precision perspective, frequent large-scale disassembly easily causes minute stress deformations or installation errors in the support frame. This not only reduces the parallelism between rollers but also compromises the original centering accuracy. In precision laser drilling, any slight misalignment in the roller system directly manifests as material transport jitter or shifting, leading to quality defects such as drilling position deviation or uneven hole diameter. In existing technologies, the fit between rollers and support structures often relies on manual adjustment to ensure coaxiality. In fast-paced maintenance operations, this adjustment method with excessive human intervention makes it difficult to guarantee optimal rotational performance after each assembly.

[0004] Patent CN205820240U discloses a quick-release roller mechanism, including a roller and bearings arranged on both sides of the roller, as well as a pair of locking shafts and an adjusting device. Positioning holes are opened at the center of both ends of the roller. One end of the locking shaft is connected to the bearing, and the other end is inserted into and fixed in the positioning hole of the roller. The adjusting device is connected to the locking shafts, and the distance between the two locking shafts is adjusted by the adjusting device to lock or release the roller. A tapered top block is provided on the locking shaft body, and its constricted end connects to the positioning hole of the roller. However, this solution has many components and a complex structure. The fitting precision between the tapered top block and the positioning hole is high; if the gap is too small, disassembly and assembly are difficult, and if it is too large, the locking is not secure. After long-term use, wear on the hole surface can easily lead to a decrease in concentricity, affecting rotational accuracy. Furthermore, when replacing a single roller, the entire locking system must be operated, making it impossible to achieve independent and quick replacement of a single roller, severely restricting maintenance efficiency.

[0005] Therefore, developing a roller bracket that enables rapid assembly and disassembly of individual components, has automatic centering capabilities, and boasts a highly stable structure that can effectively shorten maintenance downtime has become an urgent need to improve the level of automated maintenance and processing accuracy of laser drilling equipment. Summary of the Invention

[0006] The purpose of this invention is to overcome the problems of existing roller brackets and provide a self-centering quick-release roller bracket based on a laser drilling machine and its installation and disassembly method. Specifically, it is a roller bracket structure with "point-to-point" quick assembly and disassembly, self-centering function and high stability, so as to simplify the operation and maintenance process of the bracket structure during drilling and improve processing quality and efficiency.

[0007] This invention relates to a self-centering quick-release roller bracket based on a laser drilling machine and its installation and disassembly method, comprising a bracket frame and multiple rollers mounted on the bracket frame; both ends of the rollers are machined into tapered tips, and the inner holes of the bushings that cooperate with them are provided with corresponding tapered grooves; one of the bushings is an axially sliding structure and is locked and positioned by a set screw.

[0008] The objective of this invention can be achieved through the following technical solutions: In one aspect, the present invention provides a self-centering quick-release roller bracket based on a laser drilling machine, comprising: Bracket frame used to provide basic support; A plurality of rollers are disposed on the bracket frame, the rollers being used to convey cigarette tipping paper; And a bushing assembly for supporting and fixing the roller, the bushing assembly including a fixed bushing and a slidable bushing corresponding to both ends of the roller respectively; Both ends of the roller shaft are machined into tapered tips, namely the tapered tip of the fixed end of the roller and the tapered tip of the movable end of the roller. The inner hole of the bushing that cooperates with it is machined with a corresponding tapered groove. The automatic centering of the roller and the coaxiality during rotation are ensured through tapered surface coupling.

[0009] Furthermore, the bushing assembly includes a fixed bushing fixedly disposed on one side of the bracket frame, and a slidable bushing disposed on the other side of the bracket frame.

[0010] Furthermore, a slidable bushing is disposed in the bushing mounting hole of the bracket frame, and the inner wall of the bushing mounting hole is provided with a sliding groove.

[0011] Furthermore, the slidable bushing is designed to slide axially and is equipped with a quick-locking structure for controlling its axial position.

[0012] Furthermore, the tapered surfaces at both ends of the roller form a self-centering constraint with the bushing groove, which is used to eliminate axial movement during the roller rotation process and ensure coaxiality.

[0013] Furthermore, the quick-locking structure employs a set screw, i.e., a fastening screw; the set screw is used to lock the position of the slidable bushing, and the two conical surfaces of the roller are pressed into the conical groove of the bushing assembly by axial extrusion force to prevent the roller from axially moving during operation.

[0014] Furthermore, the cone angle of the cone tip is 100°-120°.

[0015] Furthermore, multiple rollers are arranged parallel to each other at equal intervals along the length of the bracket frame.

[0016] Furthermore, the bracket frame is a non-integral detachable structure, which supports the independent assembly and disassembly of individual rollers, allowing any roller to be individually maintained or replaced without using the main support structure.

[0017] Furthermore, after releasing the quick-locking structure, the slidable bushing has the freedom to slide outward along the axial direction to release the axial clamping force on the roller. In another aspect, the present invention also provides a maintenance method for a self-centering quick-release roller bracket based on a laser drilling machine, comprising two parts: installation and disassembly, implemented using the aforementioned bracket, and including the following steps: S1. Roller positioning: Align the tapered tip of the fixed end of the roller to be installed with and insert it into the corresponding tapered groove of the fixed bushing; S2. Initial centering of the roller: Press the roller to be installed into the bracket and align the tapered tip of the movable end of the roller with the corresponding tapered groove of the sliding bushing. S3. Locking and self-centering: Move and reset the slidable bushing, and tighten the corresponding set screw. Use axial extrusion force to make the roller automatically complete center positioning and fixation through conical coupling. S4. Independent disassembly of a single component: When maintenance is required on a specific roller, loosen and remove the top screw corresponding to that roller, push the slidable bushing outward and backward to release the axial clamping force, and remove the roller directly from the side. This process does not interfere with the working status of other rollers.

[0018] During installation, axial compressive force is generated by pushing the sliding bushing, causing the conical tip to wedge tightly with the conical groove, achieving self-centering of the roller. During disassembly, simply loosening the set screw and retracting the bushing allows the removal of a single roller without affecting other rollers. This invention enables independent disassembly of individual components while significantly improving rotational coaxiality and positioning accuracy through the conical surface fit, greatly reducing equipment downtime.

[0019] Compared with the prior art, the present invention has the following advantages: (1) The design of this invention changes the connection method between the roller and the bushing. Any roller can be replaced individually without modifying the main structure of the bracket. This solves the problem of high coupling in the original structure, where the entire bracket frame must be disassembled if a roller is damaged. This simplifies the replacement process and improves production efficiency.

[0020] (2) The present invention achieves automatic centering by “coupling” the tapered tips at both ends of the roller shaft with the tapered groove inside the bushing, avoiding the error introduced by manual adjustment, and ensuring the coaxiality during rotation and the stability of material transmission during drilling.

[0021] (3) The present invention adopts a simple side-mounted screw structure. The axial clamping force can be quickly released and the roller can be removed by loosening the screw, which greatly reduces downtime and manpower consumption caused by equipment maintenance and greatly improves maintenance efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a self-centering quick-release roller bracket based on a laser drilling machine, as shown in Example 1. Figure 2 This is a cross-sectional view of a self-centering quick-release roller bracket based on a laser drilling machine, as shown in Example 1.

[0023] Explanation of markings in the diagram: 1- Bracket frame; 2-Roller, 21-Conical tip of fixed end of roller, 22-Conical tip of movable end of roller; 3-Sleeve assembly, 31-Fixed sleeve, 32-Sliding sleeve; 4- Quick-locking structure, 41- Set screw. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. In the following embodiments or examples, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0025] It should be noted that in the description of this invention, the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1 This embodiment provides a self-centering quick-release roller bracket based on a laser drilling machine and its installation and disassembly method. The specific device structure is as follows: Figure 1 and Figure 2 As shown, it includes a bracket frame 1, multiple rollers 2 arranged on the bracket frame 1, bushing assemblies 3 arranged on both sides of the bracket frame 1 and cooperating with the ends of each roller 2, and a quick-locking structure 4 arranged on one side of the bracket frame 1.

[0028] Both ends of the roller shaft in roller 2 are machined into tapered tips, and corresponding fixed bushings 31 are machined into the inner holes of the bushings that mate with it. Through the geometric constraints generated by "tapered coupling", automatic alignment is achieved during roller installation, ensuring coaxiality during rotation.

[0029] The bushing assembly 3 includes a fixed bushing 31 disposed on one side of the bracket frame 1 and a slidable bushing 32 disposed on the other side of the bracket frame 1. The slidable bushing 32 has the freedom to slide axially, which is used to release or apply axial clamping force on the roller 2.

[0030] The quick-locking structure 4 uses a set screw 41 (fastening screw) to control the position of the sliding bushing 32. By tightening the set screw 41, the sliding bushing 32 is subjected to axial compressive force to achieve the centering and fixing of the roller 2.

[0031] The bracket frame 1 has a low coupling structure, which supports the independent assembly and disassembly of individual rollers 2. Any roller 2 can be replaced individually without disassembling the entire bracket frame 1.

[0032] The assembly and disassembly method of the above-mentioned device in this embodiment includes the following steps: Install: Roller positioning: Insert the tapered tip 21 of the roller 2's fixed end into the tapered groove of the fixed bushing 31 on one side of the bracket frame 1.

[0033] Bushing reset: Slide the sliding bushing 32 on the other side inward and adjust the angle of the sliding bushing 32 so that it is fully coupled with the tapered tip 22 of the movable end of the roller.

[0034] Locking and fixing: Tighten the corresponding set screw 41. Under the thrust of the set screw, the sliding bushing 32 applies axial extrusion force. Utilizing the conical coupling characteristics, the roller 2 automatically completes center positioning and is firmly locked, effectively preventing axial movement during high-speed operation.

[0035] Disassembly: Release pressure: Loosen and remove the set screw 41 corresponding to the roller 2 to be disassembled.

[0036] Pushing the bushing backward: Push the slidable bushing 32 outward and backward to disengage it from the end of the roller 2, thereby releasing the axial clamping force.

[0037] Independent sampling: After roller 2 is unconstrained, it can be directly removed from the side of the sliding bushing 32. The whole process does not require the use of the main body of the bracket frame 1, realizing "point-to-point" quick disassembly of any roller 2.

[0038] In this embodiment, since the tapered tip 21 of the fixed end and the fixed bushing 31 are in a tapered fit, under the action of axial extrusion force, the tapered surface can automatically align the axis of the roller 2 with the center line of the bushing assembly 3, thereby achieving self-centering. This structural design allows the roller 2 to achieve a high degree of coaxiality without repeated manual adjustments during installation, effectively ensuring the stability of the roller during high-speed rotation.

[0039] In this embodiment, the cooperative design of the sliding bushing 32 and the quick-locking structure 4 allows for the independent disassembly of a single roller 2. Specifically, when it is necessary to replace or maintain a certain roller 2, simply loosen the corresponding set screw of that roller 2, allowing the sliding bushing 32 to slide outward along the axial direction, thus releasing the coupling between the conical tip 21 and the conical groove. The roller 2 is then completely detached from the entire bracket system and can be directly removed from the top. The locking state of the remaining rollers 2 remains unaffected and does not require disassembly. This design avoids the cumbersome operation of disassembling an entire row of rollers or even the main body of the bracket frame due to the interconnectedness of rollers in traditional brackets, shortening the single roller replacement time and significantly improving equipment maintenance efficiency.

[0040] Example 2 Based on Example 1, the following setting is also included: the cone angle of the cone tip of each roller 2 is 100°-120°.

[0041] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A self-centering quick-release roller bracket based on a laser drilling machine, characterized in that, include: Bracket frame (1), roller (2), bushing assembly (3), quick-locking structure (4); Both ends of the roller (2) are provided with tapered tips, namely the tapered tip (21) of the fixed end of the roller and the tapered tip (22) of the movable end of the roller. The bushing assembly (3) includes a fixed bushing (31) and a slidable bushing (32); the inner hole of the fixed bushing (31) and the inner hole of the slidable bushing (32) are both provided with a tapered groove corresponding to the tapered tip; The quick-locking structure (4) is disposed on the bracket frame and close to the slidable bushing; The fixed bushing (31) is installed on one side of the bracket frame (1), and the slidable bushing (32) is disposed on the other side of the bracket frame (1). The quick-locking structure (4) is used to lock the slidable bushing (32) in an axial position.

2. The self-centering quick-release roller bracket based on a laser drilling machine according to claim 1, characterized in that, The quick-locking structure (4) uses a set screw (41); the set screw (41) passes through the side wall of the bracket frame (1), and the end of the set screw (41) contacts the outer wall of the slidable bushing (32). The position of the slidable bushing (32) is limited by friction or a limiting groove; the fixed bushing (31) is fixedly installed on one side of the bracket frame (1), and the slidable bushing (32) is slidably disposed on the other side of the bracket frame (1).

3. A self-centering quick-release roller bracket based on a laser drilling machine according to claim 2, characterized in that, The outer wall of the slidable bushing (32) is provided with a limiting groove, and the end of the set screw (41) is embedded in the limiting groove; the slidable bushing (32) slides outward along the axial direction after the quick locking structure (4) is unlocked.

4. A self-centering quick-release roller bracket based on a laser drilling machine according to claim 1, characterized in that, The slidable bushing (32) is disposed in the bushing mounting hole of the bracket frame (1), and the inner wall of the bushing mounting hole is provided with a sliding groove.

5. A self-centering quick-release roller bracket based on a laser drilling machine according to claim 1, characterized in that, Multiple rollers (2) are provided, and the multiple rollers (2) are arranged parallel to each other along the length axis of the bracket frame (1).

6. The installation method of the self-centering quick-release roller bracket based on a laser drilling machine according to claim 1, characterized in that, The cone angle of the cone tip is 100°-120°.

7. An installation method for a self-centering quick-release roller bracket based on a laser drilling machine as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: Insert the tapered tip (21) of the roller (2) at one end of the roller fixed end into the tapered groove of the fixed bushing (31) on one side of the bracket frame (1); S2: Slide the sliding bushing (32) on the other side inward and adjust the angle of the sliding bushing (32) so that the sliding bushing (32) is coupled with the tapered tip (22) of the movable end of the roller; S3: Locking quick-locking structure (4), the sliding bushing (32) applies axial extrusion force, and the roller (2) automatically completes center positioning and locks securely.

8. A method for disassembling a self-centering quick-release roller bracket based on a laser drilling machine as described in any one of claims 1-6, characterized in that, Includes the following steps: T1: Loosen and remove the quick-locking structure (4) corresponding to the roller (2) to be disassembled; T2: Push the sliding bushing (32) outward and backward so that the sliding bushing (32) disengages from the tapered tip (22) of the movable end of the roller. T3: Remove the roller (2) directly from the side of the sliding bushing (32).

9. A method for disassembling a self-centering quick-release roller bracket based on a laser drilling machine according to claim 8, characterized in that, The slidable bushing (32) has the freedom to slide outward along the axial direction after the quick-locking structure (4) is released.

10. A method for disassembling a self-centering quick-release roller bracket based on a laser drilling machine according to claim 8, characterized in that, In step T3, when one of the rollers (2) is removed from the bracket frame (1), the main body of the bracket frame (1) and the other rollers (2) are not disassembled.

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