A knife guard device for a cutting bed

Abstract

The application discloses a cutter protection device for a cutting bed and belongs to the technical field of cutting beds. The cutter protection device comprises a frame, a fixed plate, a power mechanism, a fixed cutter mechanism, a cutting cutter and a limiting mechanism. The limiting mechanism is fixedly installed on the fixed plate and extends through the fixed plate. A through hole is formed in the limiting mechanism and used for inserting the cutting cutter. The limiting mechanism comprises a fixing frame fixed on the fixed plate and a fixing box fixed on the lower end of the fixing frame. The upper end of the fixing frame is rotationally connected with a first guide wheel distributed on the left and right and a second guide wheel distributed in front and back. The fixing box is internally provided with a third guide wheel set distributed on the left and right and a bearing located at the middle end. A protective sleeve is installed on the outer periphery of the bearing. The first guide wheel and the second guide wheel can be attached to the front, rear, left and right four end surfaces of the cutting cutter. The third guide wheel set and the protective sleeve on the bearing can be attached to the left, rear and three end surfaces of the cutting cutter. The cutter edge part is comprehensively and integrally protected, and the cutter edge part is integrally protected.

Description

Technical Field

[0001] This application relates to the field of cutting bed technology, and more specifically, to a cutting bed blade guard device. Background Technology

[0002] Materials are typically fixed within the cutting area of ​​a cutting table, and the material is cut using the rotation and reciprocating motion of the cutting blade. When the blade is cutting up and down, a blade guard device is required to guide the blade, increase its rigidity, and prevent it from bending or deforming, which would affect the cutting quality.

[0003] However, existing blade protection devices use bearing clamping to protect the cutting blade. This method can only provide partial protection for the cutting blade. When the cutting blade moves at high speed, due to the excessive resistance of the material being cut, the part of the cutting blade that is not clamped can easily deform completely, causing the actual cutting path of the cutting blade to deviate from the ideal cutting path. Excessive deviation seriously affects the cutting precision.

[0004] Therefore, a cutting bed guard device is needed to solve the above problems. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section, some embodiments of this application provide a cutting bed knife guard device, comprising: a frame, a fixing plate fixedly mounted at the lower end of the frame, a power mechanism mounted at the front end of the frame, a power source connected to the power mechanism at the rear end of the frame, a knife fixing mechanism mounted at the lower end of the power mechanism, a cutting blade fixedly mounted on the knife fixing mechanism, a limiting mechanism extending vertically through the fixing plate mounted at the fixing plate, the cutting blade extending downward through the limiting mechanism, and a first guide wheel distributed horizontally and a second guide wheel distributed front-back at the upper handle of the cutting blade, wherein both the first guide wheel and the second guide wheel are... The device is designed to fit snugly against the end face of the cutting blade. A fixing frame is fixedly mounted on the fixing plate, and a sliding block is provided at the lower end of the fixing frame. A blade guard plate is attached to both sides of the sliding block. A threaded hole is provided at the sliding block. A slot is provided on the blade guard plate. A blade guard is fixedly mounted at the front end of the blade guard plate, with blade guards evenly distributed vertically. The blade guard plate and the blade guards abut against the left, right, and front end faces of the cutting blade. A fixing box is fixedly mounted at the lower end of the fixing frame. A positioning frame is provided inside the fixing box. A rotatable third guide wheel assembly is provided inside the positioning frame. Two symmetrical third guide wheel assemblies are provided on the back of the cutting blade. The third guide wheel assemblies abut against the left and right end faces of the cutting blade.

[0007] Furthermore, a bidirectional screw is rotatably connected inside the fixed box. The right end of the bidirectional screw extends outward and penetrates the fixed box. The right end of the bidirectional screw is fixed to the turntable. The bidirectional screw is rotatably inserted into the positioning frame. Two symmetrical external threads are formed on the outer circumference of the bidirectional screw. The helical directions of the two external threads are opposite. There is a gap between the two external threads when they are close to each other. A bearing is installed in the gap. The outer circumferential surface of the bearing can fit against the rear end face (back of the blade).

[0008] Furthermore, the third guide wheel assembly includes a magnetic patch, an abutment plate, a magnet, a connecting mechanism, and a rotating cylinder. The rotating cylinder is threadedly connected to the external thread and slides in engagement with the outer circumferential surface of the bidirectional screw. A sliding key is fixed on the outer circumference of the rotating cylinder and slides in engagement with the positioning frame. The abutment plate is rotatably connected to the rotating cylinder by a connecting mechanism. The connecting mechanism includes a rotating ring fixed on the rotating cylinder. The rotating ring is inserted into the abutment plate, and graphite rings are attached to both the rotating ring and the abutment plate. Two magnets are respectively fixedly embedded at the close ends of the two abutment plates. The magnets are magnetically attracted to the magnetic patch, and the magnetic patch slides and rotates in engagement with the outer circumferential surface of the bidirectional screw.

[0009] Furthermore, the blade guard is fixedly disposed at the front end of the blade guard plate, and the inner end face of the blade guard can fit against the outer end face of the cutter. The front ends of the two blade guards on the left and right sides can fit against each other to cover the front side of the cutter.

[0010] The beneficial effects of this application are as follows:

[0011] 1. By rotating the first and second guide wheels on the upper part of the fixed frame via bearings, the first and second guide wheels abut against the handle of the cutting blade, thus achieving upper limit. By installing the third guide wheel group and the protective sleeve on the bearing coaxially set at the lower fixed box, they abut against the left, right, and rear three end faces of the cutting blade respectively, thereby achieving lower limit of the cutting blade. Through upper and lower limit, the cutting blade achieves initial stability, thus forming a more comprehensive and holistic protection for the blade edge, and can effectively protect the blade edge as a whole.

[0012] 2. The blade guards are fixed by threaded parts installed at the slots and threaded holes, so that the two blade guards clamp the left and right ends of the cutter. As the cutter moves, the sliding block moves up and down synchronously. The blade guards increase the protection and limit the middle of the cutter, thereby increasing the length of the blade guards and the movement path, and reducing the risk of the cutter bending. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0014] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall structure according to one embodiment of this application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the front view structure in the embodiment;

[0018] Figure 3 yes Figure 1 An exploded view of part of the cutting blade and limiting mechanism in the embodiment;

[0019] Figure 4 yes Figure 1 A schematic diagram of the connection at the fixing plate in the embodiment;

[0020] Figure 5 yes Figure 3 A front view of the bidirectional screw and positioning frame portion in the embodiment;

[0021] Figure 6 yes Figure 5 A partial cross-sectional view of AA after the positioning frame is removed in the embodiment;

[0022] Figure 7 yes Figure 2 A schematic cross-sectional view of the blade guard plate in the embodiment.

[0023] Figure label:

[0024] 10. Frame; 11. Fixing plate; 12. Power mechanism; 13. Blade fixing mechanism; 14. Cutting blade; 15. Limiting mechanism; 20. First guide wheel; 21. Second guide wheel; 22. Fixing frame; 23. Blade guard plate; 24. Groove; 25. Threaded opening; 26. Blade guard; 27. Third guide wheel assembly; 30. Fixing box; 31. Bidirectional screw; 32. Turntable; 33. Positioning frame; 34. External thread; 35. Bearing; 36. Magnetic patch; 37. Abutment plate; 38. Magnet; 39. Connecting mechanism; 40. Rotating cylinder; 41. Sliding block. Detailed Implementation

[0025] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0026] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0027] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0028] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] It should be noted that, in this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0031] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] Reference Figure 1-3A cutting bed blade guard device includes: a frame 10, a fixing plate 11 fixed at the lower end of the frame 10, a power mechanism 12 installed at the front end of the frame 10, a power source connected to the power mechanism 12 at the rear end of the frame 10, a blade fixing mechanism 13 installed at the lower end of the power mechanism 12, a cutting blade 14 fixedly installed on the blade fixing mechanism 13, a limiting mechanism 15 extending vertically through the fixing plate 11 installed at the fixing plate 11, the cutting blade 14 extending downward through the limiting mechanism 15, and first guide wheels 20 distributed left and right at the upper handle of the cutting blade 14. The first guide wheel 20 and the second guide wheel 21, which are distributed front and rear, can both fit against the end face of the cutter 14. A fixing frame 22 is fixed on the fixing plate 11. The lower end of the fixing frame 22 is connected to a sliding block 41 that can slide up and down. Both the left and right ends of the sliding block 41 are fitted with blade guard plates 23. A threaded hole 25 is opened at the sliding block 41. A slot 24 is opened on the blade guard plate 23. A blade guard 26 that is evenly distributed vertically is fixed at the front end of the blade guard plate 23. The blade guard plate 23 and the blade guard 26 are abutted against and positioned on the left, right, and front sides of the cutter 14. On the three end faces, a fixing box 30 is fixedly installed at the lower end of the fixing frame 22. A positioning frame 33 is installed inside the fixing box 30, and a rotatable third guide wheel assembly 27 is installed inside the positioning frame 33. Two symmetrical third guide wheel assemblies 27 are provided on the back of the cutting blade 14, and the third guide wheel assemblies 27 are abutted against the left and right end faces of the cutting blade 14. The cutting blade 14 is fixedly installed at the lower end of the power mechanism 12 through the blade fixing mechanism 13. When the power mechanism 12 is working, the blade fixing mechanism 13 can drive the cutting blade 14 to move up and down reciprocally, thereby performing cutting work. During the up-and-down movement, the first guide wheel 20 and the second guide wheel 21 at the upper end restrict the four-sided displacement of the cutting blade 14 (front, back, left, and right). The blade guard plate 23 at the middle end is in contact with the end face of the cutting blade 14, restricting the three-sided displacement of the cutting blade 14 (front, left, and right). The third guide wheel group 27 at the lower end is in contact with the end face of the cutting blade 14, restricting the left and right displacement of the cutting blade 14. The sliding block 41 connected to the blade guard plate 23 and the bearing 35 connected to the third guide wheel group 27 limit the rear end face (back of the blade) of the cutting blade 14, so that the cutting blade 14 is stably set on the limiting mechanism 15.

[0033] Reference Figure 2-5A bidirectional screw 31 is rotatably connected inside the fixed box 30. The right end of the bidirectional screw 31 extends outward and passes through the fixed box 30. The right end of the bidirectional screw 31 is fixed to the turntable 32. The bidirectional screw 31 is rotatably inserted into the positioning frame 33. Two symmetrical external threads 34 are formed on the outer periphery of the bidirectional screw 31. The helical directions of the two external threads 34 are opposite. There is a gap between the two external threads 34 and their close ends. A bearing 35 is installed in the gap. A protective sleeve is installed on the outer periphery of the bearing 35. The protective sleeve can abut against the rear end face of the cutter 14. The third guide wheel group 27 includes a magnetic patch 36, an abutment plate 37, a magnet 38, and a connecting mechanism 39. A rotating cylinder 40 is threaded to an external thread 34 and slides with the outer circumferential surface of a bidirectional screw 31. A sliding key is fixed on the outer circumference of the rotating cylinder 40 and slides with the positioning frame 33. A connecting mechanism 39 is rotatably connected to the abutment plate 37 and the rotating cylinder 40. The connecting mechanism 39 includes a rotating ring fixed on the rotating cylinder 40. The rotating ring is inserted into the abutment plate 37 and graphite rings are attached to both the rotating cylinder 40 and the abutment plate 37. Two magnets 38 are respectively fixedly embedded at the close ends of the two abutment plates 37. The magnets 38 are magnetically attracted to the magnetic patch 36. The magnetic patch 36 slides and rotates with the outer circumferential surface of the bidirectional screw 31.

[0034] When installing the cutting blade 14, the blade tip of the cutting blade 14 is passed through the upper and lower through slots of the limiting mechanism 15 with the blade back facing backward and in contact with the bearing 35 and the sliding block 41. By rotating the turntable 32, the rotating cylinder 40, which is threadedly connected to the bidirectional screw 31, rotates synchronously. The rotating cylinder 40 moves left and right under the sliding cooperation of the sliding key and the positioning frame 33, thereby driving the two abutting plates 37, which are rotatably connected to the rotating cylinder 40 through the connecting mechanism 39, to move closer to each other, so that the magnetic patches 36 on the abutting plates 37, which are magnetically attracted by the magnet 38, are in contact with the left and right end faces of the cutting blade 14.

[0035] Reference Figure 7 The blade guard 26 is fixedly installed at the front end of the blade guard plate 23, and the inner end face of the blade guard 26 can fit against the outer end face of the cutter 14. The front ends of the two blade guards 26 on the left and right can fit against each other to cover the front side of the cutter 14. The blade guard 26 abuts against the front end of the cutter 14, thereby restricting the movement of the front side of the cutter 14.

[0036] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A cutting bed blade guard device, comprising a frame (10), a fixing plate (11), a power mechanism (12), a blade fixing mechanism (13), a cutting blade (14), and a limiting mechanism (15), characterized in that: The limiting mechanism (15) extends vertically and is fixedly installed on the fixed plate (11). The limiting mechanism (15) has vertical through holes for the cutting knife (14) to be inserted. The limiting mechanism (15) includes a fixed frame (22) fixed on the fixed plate (11) and a fixed box (30) fixed at the lower end of the fixed frame (22). The upper part of the fixed frame (22) is rotatably connected to a first guide wheel (20) distributed to the left and right and a second guide wheel (21) distributed to the front and back. The fixed box (30) is equipped with a third guide wheel group (27) distributed to the left and right and a bearing (35) located in the middle. A protective sleeve is installed on the outer periphery of the bearing (35). The first guide wheel (20) and the second guide wheel (21) can fit with the four end faces of the cutting knife (14) from the front to the back and left to the right. The protective sleeve on the third guide wheel group (27) and the bearing (35) can fit with the three end faces of the cutting knife (14) from the left to the right and back.

2. The cutting bed knife guard device according to claim 1, characterized in that: The fixed box (30) is fixedly provided with a positioning frame (33), and a bidirectional screw (31) is rotatably connected to the positioning frame (33). One end of the bidirectional screw (31) passes through the fixed box (30), and a turntable (32) is fixedly provided at the end of the bidirectional screw (31) away from the fixed box (30). Both the left and right ends of the turntable (32) are provided with external threads (34), and the two external threads (34) are arranged in opposite directions. There is a gap between the two external threads (34), and a bearing (35) is installed in the gap. The bearing (35) can abut against the rear end face of the cutter (14).

3. A cutting bed knife guard device according to claim 2, characterized in that: The third guide wheel assembly (27) includes a magnetic patch (36), an abutment plate (37), a magnet (38), and a rotating cylinder (40). The rotating cylinder (40) is threadedly connected to the external thread (34). A sliding key is fixed on the outer periphery of the rotating cylinder (40) and slides in cooperation with the positioning frame (33). The abutment plate (37) is rotatably connected to the rotating cylinder (40) by a connecting mechanism (39). The connecting mechanism (39) includes a rotating ring fixed on the rotating cylinder (40). The rotating ring is inserted into the abutment plate (37) and a graphite ring is attached between the rotating ring and the abutment plate (37). Two magnets (38) are respectively fixedly embedded at the close ends of the two abutment plates (37). The magnets (38) are magnetically attracted to the magnetic patch (36). The magnetic patch (36) slides and rotates in cooperation with the outer periphery of the bidirectional screw (31).

4. A cutting bed knife guard device according to claim 1, characterized in that: The lower part of the fixed frame (22) is provided with a sliding block (41) that can slide up and down. Both sides of the sliding block (41) are equipped with blade guards (23). The front end of the blade guard (23) is fixed with blade guards (26) that are evenly distributed up and down. The blade guards (26) can fit against the front end of the cutting knife (14). The left and right ends of the sliding block (41) are fitted with the blade guards (23). The sliding block (41) is provided with a threaded opening (25). The blade guard (23) is provided with a slot (24). The slot (24) and the threaded opening (25) are connected by a threaded part for fixation.

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