Driving roller structure of self-chip-removal rotary cutter

Abstract

The utility model relates to a self-chip removal rotary cutter driving roller structure which comprises a roller shaft located in the center, the roller shaft is sleeved with a plurality of transmission disc assemblies which are arranged at intervals in the axial direction and can rotate synchronously with the roller shaft, each transmission disc assembly comprises a pressing disc and a fluted disc which are installed together in an attached mode, and convex teeth of the fluted discs protrude out of the circumferential faces of the pressing discs; a chip collecting groove is formed in the side, facing the fluted disc, of the pressing disc, and chip removal holes penetrating through the other side of the pressing disc are formed in the chip collecting groove. The driving roller of the self-chip-removal rotary cutter is reasonable in structural design, novel in structure and high in practicability, friction force between the driving roller and wood is increased through the convex teeth of the fluted disc, slipping can be avoided, and work is stable and reliable; meanwhile, the convex teeth can damage fibers of the veneer to a certain extent, so that the gluing force of the plywood is better, the flatness of the plywood is improved, and the deformation of the plywood is reduced; in addition, a chip removal function is achieved, and the fluted disc can be effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of veneer lathes, and in particular to a drive roller structure for a self-discharging veneer lathe. Background Technology

[0002] Because the single drive roller of the rotary veneer machine needs to contact the wood to assist in driving the wood to rotate, it is impossible to set a pressure gauge to fix the thickness of the veneer. During the veneer process, the wood will not always stay on the center line and will inevitably shake up and down (vibrate) at the blade edge, resulting in stringing, wavy, and uneven thickness of the veneer, which affects the quality of the veneer.

[0003] Chinese patent CN217372722U discloses a pawl-type drive roller for a spindleless veneer lathe, which meets the requirement of adding a pressure gauge to the spindleless veneer lathe. However, in actual operation, the friction between the drive roller and the wood is insufficient, which easily leads to slippage and poor working stability. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a novel and practical self-dumping veneer rotary cutter drive roller structure that can avoid slippage, operate stably and reliably, has a chip removal function, and can effectively protect the toothed disc.

[0005] This utility model is achieved by the following scheme: a drive roller structure for a self-discharging veneer cutting machine, including a roller shaft located at the center, and multiple sets of transmission disk assemblies arranged axially at intervals and capable of rotating synchronously with the roller shaft are mounted on the roller shaft. The transmission disk assembly includes a pressure plate and a toothed plate that are fitted together, and the protruding teeth of the toothed plate protrude from the circumferential surface of the pressure plate. A chip collection groove is opened on the side of the pressure plate facing the toothed plate, and a chip discharge hole penetrating the other side of the pressure plate is provided in the chip collection groove.

[0006] Furthermore, the chip collection groove is annular, and several chip discharge holes are provided inside the chip collection groove and are evenly distributed along the circumference.

[0007] Furthermore, both ends of the roller shaft are rotatably connected to bearing seats, and a sprocket is installed at one end of the roller shaft.

[0008] Furthermore, the other end of the roller shaft is provided with an external thread and is threadedly connected to a pressure ring.

[0009] Furthermore, the circumferential surface of the pressure plate is provided with knurling.

[0010] Furthermore, both the pressure plate and the gear plate have shaft holes at their centers for the roller shaft to pass through, and the pressure plate and the gear plate are connected to the roller shaft via a key.

[0011] Furthermore, a pair of keyways are symmetrically arranged in the shaft holes of both the pressure plate and the gear plate.

[0012] Furthermore, a limiting bushing that is sleeved on the roller is provided between two adjacent sets of transmission disc assemblies.

[0013] Furthermore, the limiting bushing is an integral structure with the pressure plate of a set of transmission disc assemblies and abuts against the gear plate of another set of transmission disc assemblies.

[0014] Furthermore, annular sealing grooves are provided on both the end face of the limiting bushing and the side of the pressure plate facing away from the limiting bushing, and a sealing ring is provided in the annular sealing groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The drive roller structure of the self-draining veneer lathe of the present invention is reasonably designed, novel in structure, and highly practical. It utilizes the convex teeth of the toothed disc to increase the friction between the drive roller and the wood, which can prevent slippage, facilitate torque transmission, and ensure stable and reliable operation. In addition, the convex teeth can form continuous concave points on the veneer, which can break the fibers of the veneer to a certain extent, making the bonding force of the plywood better, which is conducive to improving the flatness of the plywood and reducing the deformation of the plywood. Furthermore, it has a chip removal function, which promptly removes the wood chips squeezed into the gaps, preventing the toothed disc from breaking due to the wood chips pressing against it, and effectively protecting the toothed disc.

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0017] Figure 1 This is a perspective view of the drive roller from the left side of an embodiment of this utility model;

[0018] Figure 2 This is a perspective view of the drive roller from the right side of an embodiment of this utility model;

[0019] Figure 3 This is a perspective view of one side of the transmission disk assembly according to an embodiment of the present utility model;

[0020] Figure 4 This is a perspective view of the other side of the transmission disk assembly according to an embodiment of the present utility model;

[0021] Figure 5 This is a cross-sectional view of the transmission disc assembly according to an embodiment of this utility model;

[0022] Figure 6 This is a perspective view of the pressure plate according to an embodiment of the present utility model;

[0023] The following are the labels in the diagram: 100-roller shaft, 200-transmission disc assembly, 210-pressure plate, 211-chip collection groove, 212-chip discharge hole, 213-keyway A, 220-gear disc, 221-keyway B, 230-limiting bushing, 240-annular sealing groove, 300-bearing seat, 400-sprocket, 500-pressure ring. Detailed Implementation

[0024] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] like Figures 1-6 As shown, a self-dumping veneer lathe drive roller structure includes a central roller shaft 100. Multiple sets of transmission disc assemblies 200, arranged axially at intervals and rotating synchronously with the roller shaft, are mounted on the roller shaft 100. Each transmission disc assembly includes a pressure plate 210 and a toothed disc 220 fitted together. The teeth of the toothed disc protrude from the circumference of the pressure plate. A chip collection groove 211 is formed on the side of the pressure plate facing the toothed disc, and a chip discharge hole 212 penetrating the other side of the pressure plate is provided in the chip collection groove. Because there is a gap between adjacent transmission disc assemblies, the lathe's pressure gauge can be arranged within the gap. The drive roller drives the log to rotate via the transmission disc assemblies 200. The protruding teeth of the toothed disc increase the friction between the drive roller and the wood, preventing slippage and facilitating torque transmission. Furthermore, the protruding teeth can form continuous concave points on the veneer, which can, to some extent, break down the veneer fibers, making the cut veneer softer, improving the bonding strength of the plywood, and thus improving the flatness and reducing deformation of the plywood.

[0027] In addition, the drive roller generates a small amount of powder (i.e., wood chips) when it rubs and slips against the wood during operation. If this powder gets stuck in the gap between the toothed disc and the pressure plate, it will accumulate and cause the toothed disc to swell. In severe cases, it can lead to the toothed disc cracking, reducing the product's durability. To prevent the wood chips squeezed into the gap from causing the toothed disc 220 to break, this application provides a chip collection groove 211 and a chip discharge hole 212 on the side of the pressure plate 210 facing the toothed disc. The wood chips squeezed into the gap will enter the chip collection groove 211 and be discharged in time through the chip discharge hole, preventing the toothed disc from breaking due to the wood chips squeezing it, thus effectively protecting the toothed disc.

[0028] In this embodiment, the chip collection groove 211 is annular, and a plurality of chip discharge holes are provided in the chip collection groove and are evenly distributed along the circumference.

[0029] In this embodiment, the two ends of the roller shaft are rotatably connected to the bearing housing 300, and a sprocket 400 is installed at one end of the roller shaft; the bearing housing 300 is fixed on the roller beam of the veneer cutting machine.

[0030] In this embodiment, the other end of the roller shaft is provided with an external thread and is threadedly connected to a pressure ring 500. The pressure ring presses the transmission disk assembly towards the center. The inner hole of the pressure ring is provided with an internal thread. The pressure ring and the roller shaft are threaded together. The pressure ring is used to press and position the transmission disk assembly towards the center, preventing axial movement of the transmission disk assembly.

[0031] In this embodiment, in order to increase the friction between the pressure plate and the wood, the circumferential surface of the pressure plate is provided with knurling.

[0032] In this embodiment, both the pressure plate and the gear plate have shaft holes at their centers for the roller shaft to pass through, and the pressure plate and the gear plate are connected to the roller shaft via a key.

[0033] In this embodiment, a pair of keyways are symmetrically arranged in the shaft holes of both the pressure plate and the gear plate, namely keyway A213 on the pressure plate and keyway B221 on the gear plate.

[0034] In this embodiment, a limiting bushing 230 is provided between two adjacent sets of transmission disk assemblies, which is sleeved on the roller shaft; the limiting bushing 230 is used to ensure that the distance between two adjacent transmission disk assemblies remains unchanged.

[0035] In this embodiment, the limiting bushing is an integral structure with the pressure plate of a set of transmission disk assemblies and abuts against the gear plate of another set of transmission disk assemblies.

[0036] In this embodiment, an annular sealing groove 240 is provided on the end face of the limiting bushing and on the side of the pressure plate facing away from the limiting bushing, and a sealing ring is provided in the annular sealing groove.

[0037] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0038] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0039] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0040] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A drive roller structure for a self-discharging veneer lathe, characterized in that: It includes a central roller shaft, on which are mounted multiple sets of transmission disc assemblies arranged axially at intervals and capable of rotating synchronously with the roller shaft. Each transmission disc assembly includes a pressure plate and a gear plate that are fitted together. The teeth of the gear plate protrude from the circumferential surface of the pressure plate. The pressure plate has a chip collection groove on the side facing the gear plate, and the chip collection groove has a chip discharge hole that penetrates the other side of the pressure plate.

2. The self-discharging veneer rotary cutting machine drive roller structure according to claim 1, characterized in that: The chip collection groove is annular, and several chip discharge holes are provided inside the chip collection groove and are evenly distributed along the circumference.

3. The self-discharging veneer rotary cutter drive roller structure according to claim 1, characterized in that: The two ends of the roller shaft are rotatably connected to the bearing housing, and a sprocket is installed at one end of the roller shaft.

4. The self-discharging veneer rotary cutter drive roller structure according to claim 3, characterized in that: The other end of the roller is provided with an external thread and is threadedly connected to a pressure ring.

5. The self-discharging veneer rotary cutting machine drive roller structure according to claim 1, characterized in that: The pressure plate has knurling on its circumferential surface.

6. The self-discharging veneer rotary cutter drive roller structure according to claim 1, characterized in that: Both the pressure plate and the gear plate have shaft holes at their centers for the roller shaft to pass through, and the pressure plate and the gear plate are connected to the roller shaft by a key.

7. The self-discharging veneer rotary cutter drive roller structure according to claim 6, characterized in that: A pair of keyways are symmetrically arranged in the shaft holes of both the pressure plate and the gear plate.

8. The self-discharging veneer rotary cutter drive roller structure according to claim 1, characterized in that: A limiting bushing, which is sleeved on the roller shaft, is provided between two adjacent sets of transmission disc assemblies.

9. The self-discharging veneer rotary cutter drive roller structure according to claim 8, characterized in that: The limiting bushing is an integral structure with the pressure plate of a set of transmission disc assemblies and abuts against the gear plate of another set of transmission disc assemblies.

10. The self-discharging veneer rotary cutter drive roller structure according to claim 8, characterized in that: Both the end face of the limiting bushing and the side of the pressure plate facing away from the limiting bushing are provided with annular sealing grooves, and a sealing ring is provided in the annular sealing groove.

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