Compression roller structure, single-roller device, double-roller device and rotary cutter

Abstract

The utility model provides a compression roller structure, a single-roller device, a double-roller device and a rotary cutter, and belongs to the technical field of rotary cutters for wood processing. The compression roller structure comprises an annular surface serving as the outer side wall of the roller, the annular surface is covered with knurls and pressing teeth, the pressing teeth are distributed in the circumferential direction of the annular surface, and the pressing teeth are provided with tips higher than the top ends of the knurls. The single-roller roller of the single-roller device and the double-roller roller of the double-roller device adopt the compression roller structure; according to the rotary cutter, only the pressing teeth are arranged on the single-roller device, or only the pressing teeth are arranged on the double-roller device, or the pressing teeth can be arranged on the single-roller device and the double-roller device at the same time; the tip ends of the pressing teeth can press the log and form certain recesses in the surface of the log, and the tip ends of the pressing teeth are arranged in the recesses to completely avoid relative sliding between the log and the surface of the roller. In the thick plate machining process, the pressing teeth cannot penetrate through the thick plate in a pressing mode, and the stability of the thick plate in the rotary cutting process is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rotary cutters for wood processing, and more particularly relates to a pressure roller structure, a single-roller device, a double-roller device and a rotary cutter. BACKGROUND

[0002] The shaftless rotary cutter is one of the devices for producing plywood, and belongs to a shaftless mechanical transmission rotary cutter, which is suitable for continuously rotary cutting the remaining wood core into veneers and can also be used for rotary cutting small logs (300 mm in diameter) into veneers. The shaftless rotary cutter mainly comprises a frame, a double-roller device, a single-roller device, a tool holder, a transmission system, an electrical system and the like. The invention patent with the name of a numerical control shaftless rotary cutter and the publication number of CN107097318A applied by the applicant is the above-mentioned shaftless rotary cutter.

[0003] In the rotary cutting of logs, the logs are clamped between the three rollers of the double-roller device and the single-roller device and rotate under the driving of the three rollers. In order to ensure the clamping force and the friction force between the logs and the roller surface, the roller surface is usually provided with knurls. However, when rotary cutting thick veneers, the logs are subjected to a large lateral force of the rotary knife, so that the stability of the logs is low, and it is difficult for the friction force provided by the knurls to maintain the rotation of the logs, and the logs and the roller surface are prone to relative sliding. SUMMARY

[0004] In order to solve the problems of the prior art, the utility model provides a pressure roller structure, a single-roller device, a double-roller device and a rotary cutter, which increase the abutting force with the logs by increasing the pressure teeth on the roller surface, so as to avoid the relative sliding between the logs and the roller surface when processing thick veneers.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the application provides a pressure roller structure, which comprises a ring surface as the outer lateral wall of the roller, the ring surface is provided with knurls, and the ring surface is further provided with pressure teeth, the pressure teeth are distributed around the circumference of the ring surface, and the pressure teeth have a sharp end which is higher than the top end of the knurls. The knurls can increase the friction force between the logs and the roller, and the sharp end of the pressure teeth can press the logs and form a certain recess on the surface of the logs, and the sharp end of the pressure teeth is in the recess, so as to completely avoid the relative sliding between the logs and the roller surface. Especially in the process of processing thick plates, the pressure teeth will not press through the thick plates, so as to ensure the stability during the rotary cutting of the thick plates.

[0006] Optionally, the pressure teeth are triangular, and the vertex of the pressure teeth is the sharp end. The sharp end of the triangular pressure teeth is more easily pressed into the surface of the logs, and the stability is higher.

[0007] Optionally, the press teeth and the knurls are arranged in several groups, and the several groups of press teeth and the several groups of knurls are arranged alternately along the axial direction of the annular surface, so that the press teeth can uniformly press the log along the axial direction of the log, and the log is prevented from being unevenly stressed along the length direction.

[0008] A single-roller device has a single-roller roller, and the outer side wall of the single-roller roller serves as an annular surface and adopts the press roller structure shown in any one of the above aspects. The press teeth on the single-roller roller can press the log during log processing, and the log is prevented from sliding relative to the single-roller roller.

[0009] Optionally, a plurality of groups of roller units are arranged at intervals along the axial direction of the single-roller roller, and the outer side walls of all the roller units combine to form an annular surface. The outer side wall of each group of roller units is provided with at least one group of knurls and at least one group of press teeth. In the case where the single-roller roller has the same length and the same clamping force as the double-roller device, the plurality of groups of roller units can increase the pressure of the annular surface on the log, so as to increase the clamping stability.

[0010] A double-roller device has two double-roller rollers arranged in parallel, and the outer side wall of at least one double-roller roller serves as an annular surface and adopts the press roller structure shown in any one of the above aspects. The press teeth on the double-roller roller can press the log during log processing, and the log is prevented from sliding relative to the double-roller roller.

[0011] A rotary cutting machine adopts the single-roller device.

[0012] A rotary cutting machine adopts the double-roller device.

[0013] A rotary cutting machine adopts the single-roller device and the double-roller device. The press teeth are arranged on both the single-roller roller and the double-roller roller, so that the log is clamped from both sides, and the stability of the log is better.

[0014] The technical solution of the present application has the following beneficial effects over the prior art:

[0015] The knurls can increase the friction between the log and the roller, and the tips of the press teeth can press the log and form a certain recess on the surface of the log. The tips of the press teeth are in the recess, so that the log is completely prevented from sliding relative to the surface of the roller. In particular, during the processing of a thick board, the press teeth will not press through the thick board, so that the stability of the thick board during rotary cutting is ensured. The rotary cutting machine can be provided with press teeth only on the single-roller device, or only on the double-roller device, or provided with press teeth on both the single-roller device and the double-roller device, so as to increase the clamping degree of the log and ensure the stability of rotary cutting during the processing of a thick board. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 It is a schematic diagram of single-roller structure.

[0018] Figure 2 It is a schematic diagram of single-roller structure. Figure 1 It is a partial enlarged view of A in the middle.

[0019] Figure 3 It is a schematic diagram of double-roller structure.

[0020] Figure 4 It is a schematic diagram of double-roller structure. Figure 3 It is a partial enlarged view of B in the middle.

[0021] Figure 5 It is a schematic diagram of rotary cutting machine structure.

[0022] Figure legend: 1, annular surface; 2, knurl; 3, pressure tooth; 4, sharp end; 5, single-roller; 6, roller unit; 7, double-roller; 8, single-roller device; 9, double-roller device. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0024] Embodiment 1:

[0025] The present embodiment provides a pressure roller structure, based on Figures 1 to 4 as shown, including an annular surface 1 as the outer wall of the roller, the annular surface 1 has knurls 2 to increase the friction between the annular surface 1 and the log. On the basis of the above structure, the annular surface 1 is also provided with pressure teeth 3, which are distributed around the circumference of the annular surface 1, and the pressure teeth 3 have sharp ends 4 that are higher than the top ends of the knurls 2. In use, the surface of the log abuts against the knurls 2, and the sharp ends 4 of the pressure teeth 3 are higher than the top ends of the knurls 2, so that the sharp ends 4 can press the log and form a certain indentation on the surface of the log, and the sharp ends 4 of the pressure teeth 3 are in the indentation to completely avoid relative sliding between the log and the surface of the roller. Especially in the process of processing thick plates, the pressure teeth 3 will not press through the relatively thick thick plates, ensuring the stability of the thick plates during rotary cutting.

[0026] Specifically, based on Figure 2 and Figure 4As shown, the pressing teeth 3 are triangular, and the vertex of the pressing teeth 3 is the pointed end 4. The pointed end 4 of the triangular pressing teeth 3 is easier to press into the surface of the log and has higher stability. Meanwhile, the pressing teeth 3 and the knurls 2 are both provided in several groups. The several groups are at least two groups, and the several groups of pressing teeth 3 and the several groups of knurls 2 are alternately arranged along the axial direction of the annular surface 1. This enables the pressing teeth 3 to more evenly distribute the pressure along the axial direction of the log, thereby avoiding uneven stress on the log along the length direction. It should be noted that a single row of pressing teeth 3 around the annular surface 1 is a group of pressing teeth 3, and the pressing teeth 3 and the knurls 2 are alternately arranged. The knurls 2 are not necessarily arranged between every two groups of pressing teeth 3. Two or more groups of pressing teeth 3 can be arranged next to each other, and then the knurls 2 are alternately arranged. The designer can reasonably design according to the actual situation.

[0027] Embodiment 2

[0028] This embodiment provides a single-roller device based on Figure 1 , Figure 2 and Figure 5 As shown, the single-roller roller 5 has an outer side wall as the annular surface 1 and adopts the pressing roller structure shown in Embodiment 1. The single-roller device 8 is a single-roller device 8 commonly used in a rotary cutter to drive and press the log. The specific structure is prior art, and will not be described here. This embodiment only increases the pressing roller structure on the roller of the existing single-roller device 8. The log can be pressed by the pressing teeth 3 on the single-roller roller 5 during log processing, thereby avoiding the relative sliding of the log and the single-roller roller 5.

[0029] Further, a plurality of groups of roller units 6 are arranged at intervals along the axial direction of the single-roller roller 5, such as twenty groups or twenty-five groups, etc. The outer side walls of all the roller units 6 are combined into the annular surface 1, and the outer side wall of each group of roller units 6 is provided with at least one group of knurls 2 and at least one group of pressing teeth 3. For example, in this embodiment, each group of roller units 6 has one group of knurls 2 and one group of pressing teeth 3. According to the different axial lengths of each group of roller units and the different pressing force requirements, each group of roller units 6 can also be provided with two or three or more groups of knurls 2 and pressing teeth 3. In the case where the length of the single-roller roller 5 is the same and the clamping force of the double-roller device 9 is the same, the plurality of groups of roller units 6 reduces the contact area of the annular surface with the log, increases the pressure of the annular surface 1 at the contact with the log, and improves the clamping stability.

[0030] Embodiment 3

[0031] This embodiment provides a double-roller device based on Figure 3 , Figure 4 and Figure 5As shown, there are two double-roller rollers 7 arranged in parallel on the top and bottom, and at least one outer side wall of the double-roller roller 7 is used as the annular surface 1 and adopts the pressure roller structure shown in Embodiment 1. The double-roller device 9, which is commonly used in the rotary cutting machine to drive and press the log, has a specific structure in the prior art, which will not be described here. The present embodiment only increases the pressure roller structure on the roller of the existing double-roller device 9. Specifically, the pressure roller structure can be arranged on the top double-roller roller 7, or on the bottom double-roller roller 7, or on both double-roller rollers 7.

[0032] Since the outer side walls of the two double-roller rollers 7 are in contact with the log, one of the double-roller rollers 7 is provided with a pressure roller structure, which can press the pressure tooth 3 into the log, thereby avoiding the relative sliding of the log with the double-roller roller 7. When both double-roller rollers 7 are provided with a pressure roller structure, the pressing effect can be further increased.

[0033] Embodiment 4:

[0034] The present embodiment provides a rotary cutting machine based on Figure 5 As shown, the single-roller device 8 in Embodiment 2 is adopted. The rotary cutting machine is a commonly used machine for processing veneer, and its specific structure is prior art, which will not be described here. The scheme in the present embodiment only sets the single-roller device 8 in Embodiment 2 in the existing rotary cutting machine. When the log is rotary cut, the log can be further pressed by the pressure tooth 3 on the single-roller roller 5 in the single-roller device 8 to ensure the stability of the log and avoid the relative sliding of the log with the single-roller roller 5, which is suitable for rotary cutting of thick plates.

[0035] Embodiment 5:

[0036] The present embodiment provides a rotary cutting machine based on Figure 5 As shown, the double-roller device 9 in Embodiment 3 is adopted. The rotary cutting machine is a commonly used machine for processing veneer, and its specific structure is prior art, which will not be described here. The scheme in the present embodiment only sets the double-roller device 9 in Embodiment 3 in the existing rotary cutting machine. When the log is rotary cut, the log can be further pressed by the pressure tooth 3 on the double-roller roller 7 in the double-roller device 9 to ensure the stability of the log and avoid the relative sliding of the log with the single-roller roller 5, which is suitable for rotary cutting of thick plates.

[0037] Embodiment 6:

[0038] The present embodiment provides a rotary cutting machine based on Figure 5The single-roller device 8 in Example 2 and the double-roller device 9 in Example 3 are both used in the shown embodiment. Also, the rotary cutting machine, which is a common machine for processing veneer, has a specific structure that is known in the art and will not be described in detail. The solution in this embodiment is only to set the single-roller device 8 in Example 2 and the double-roller device 9 in Example 3 in the existing rotary cutting machine. By setting the pressure tooth 3 on both the single-roller roller 5 and the double-roller roller 7, the log is clamped from both sides at the same time, and the solution in this embodiment has a better stabilizing effect on the log than setting the pressure tooth 3 on only the single-roller roller 5 or the double-roller roller 7, and is more suitable for rotary cutting of thick boards.

[0039] The above merely provides the preferred embodiments of the present application, but is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A press roll construction comprising an annular surface as an outer lateral wall of the roll, said annular surface having knurling, characterized in that: The annular surface is further provided with pressure teeth, which are distributed around the circumference of the annular surface, and have pointed ends higher than the knurled ends.

2. The press roll structure of claim 1, wherein: The pressure teeth are triangular, and the vertexes of the pressure teeth are the pointed ends.

3. The press roll structure according to claim 1 or 2, characterized in that: The pressure teeth and the knurls are both in several groups, and the groups of pressure teeth and the groups of knurls are alternately arranged along the axial direction of the annular surface.

4. A single roll apparatus having a single roll roll characterized by: The outer side wall of the single-roller roller is the annular surface, and adopts the pressure roller structure as claimed in any one of claims 1-3.

5. The single roll apparatus of claim 4 wherein: A plurality of groups of roller units are arranged along the axial direction of the single-roller roller, and the outer side walls of all the roller units are combined into the annular surface, and the outer side wall of each group of roller units is provided with at least one group of pressure teeth and at least one group of knurls.

6. A twin roll apparatus having two twin roll rolls juxtaposed one above the other, characterized in that: The outer side wall of at least one of the double-roller rollers is the annular surface, and adopts the pressure roller structure as claimed in any one of claims 1-3.

7. A rotary cutter characterized by: The single-roller device as claimed in claim 4 or 5 is adopted.

8. A rotary cutter characterized by: The double-roller device as claimed in claim 6 is adopted.

9. A rotary cutter characterized by: The single-roller device as claimed in claim 4 or 5 and the double-roller device as claimed in claim 6 are adopted.

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