A multi-blade saw with a blade replacement convenience

Abstract

This utility model discloses a multi-blade saw that facilitates blade replacement, relating to the field of wood processing technology. It includes a base plate, a mounting frame, a saw blade mounting assembly, and a power delivery assembly. The mounting frame is fixedly connected to the middle of the rear side of the upper end of the base plate. The saw blade mounting assembly and the power delivery assembly are mounted on the mounting frame. The saw blade mounting assembly includes a hollow mounting shaft, a threaded rod, a conical block, a rectangular insert, and an arc-shaped slider. The upper end of the mounting frame is rotatably connected to the outer rear end of the hollow mounting shaft. A threaded rod is threadedly connected to the middle of the inner side of the front-rear connecting section of the hollow mounting shaft. Two conical blocks are fixedly connected to the inner side of the threaded rod. A rectangular insert is fixedly connected to the outer side of the arc-shaped slider. This multi-blade saw, which facilitates blade replacement, can significantly improve saw blade replacement efficiency while ensuring the saw blade is firmly fixed. It allows for quick replacement of multiple blades, reducing replacement time.

Description

Technical Field

[0001] This utility model relates to the field of wood processing technology, specifically a multi-blade saw that facilitates blade replacement. Background Technology

[0002] Timber, commonly known as square timber, is made by sawing wood into square strips of a certain size and shape according to actual processing needs. It is mainly made of pine, linden, fir and other trees and processed into strips with rectangular or square cross sections. It is generally used for decoration and door and window materials, formwork support and roof truss materials in structural construction, or to make various wooden furniture. In the current technology, multi-blade saws are usually used for cutting. Multi-blade saws are also called multi-sided saws.

[0003] Among the existing technologies, the multi-blade saw with easy blade replacement, as disclosed in the patent announcement number CN213796920U, includes a housing. A support frame is fixedly installed on the top and bottom walls of the housing. A sawing shaft is movably connected to the right side of the support frame, with one end movably connected to the left side of the inner wall of the housing. An axle is fixedly installed on the outside of the sawing shaft. A motor located on the left side of the support frame is fixedly installed on the top and bottom walls of the inner wall of the housing. A wheel is fixedly connected to the output shaft of the motor. A belt is movably connected to the outside of the wheel, with one end movably connected to the outside of the axle. Two saw blades are movably connected to the outside of the sawing shaft, located on the right side of the support frame.

[0004] In existing technologies, the replacement of saw blades in traditional multi-blade saws relies on disassembling and assembling each blade one by one with multiple bolts. This operation is cumbersome and time-consuming. Furthermore, the locking mechanism lacks a linkage design, making it difficult to achieve synchronous disassembly and assembly of multiple saw blades. The single fixing method poses a risk of insufficient locking force or uneven force distribution, which can easily lead to loosening of the saw blades during operation, affecting processing safety and efficiency. Therefore, we propose a multi-blade saw that facilitates saw blade replacement. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a multi-blade saw that is easy to replace. It can greatly improve the efficiency of saw blade replacement while ensuring that the saw blade is firmly fixed. It can quickly replace multiple blades, reduce replacement time, and effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-blade saw that facilitates blade replacement, comprising a base plate, a mounting frame, a saw blade mounting assembly, and a power conveyor assembly;

[0007] Base plate: A mounting frame is fixedly connected to the middle of the rear side of the upper end, and a saw blade mounting assembly and a power conveyor assembly are mounted on the mounting frame;

[0008] Saw blade mounting assembly: includes a hollow mounting shaft, a threaded rod, a tapered block, a rectangular insert, and an arc-shaped slider. The upper end of the mounting bracket is rotatably connected to the outer rear end of the hollow mounting shaft. The inner front and rear connecting section of the hollow mounting shaft is threaded with a threaded rod. Two tapered blocks are fixedly connected to the inner side of the threaded rod. A rectangular insert is fixedly connected to the outer side of the arc-shaped slider. Four rectangular inserts are slidably connected at the same distance on the hollow mounting shaft. The arc-shaped slider is slidably connected to the tapered blocks.

[0009] The hollow mounting shaft is fixed to the base plate by the mounting bracket. The threaded rod rotates inside the hollow shaft, driving the conical block to move. The four rectangular inserts form a sliding fit with the conical block through the arc-shaped slider. The rotation of the threaded rod drives the conical block to move. The inclined structure pushes the rectangular inserts to extend and retract radially. The four-way synchronous extension mechanism achieves rapid locking. The hollow shaft design reduces the overall weight.

[0010] Furthermore, the saw blade mounting assembly also includes a saw blade mounting ring, rectangular insertion holes, and a circular saw blade. The inner side of the saw blade mounting ring is evenly provided with four rectangular insertion holes, and the outer side of the rectangular insertion holes is fixedly connected to the circular saw blade. The rectangular insertion strip is slidably connected to the saw blade mounting ring.

[0011] The saw blade mounting ring is fixed by inserting a rectangular insert into a rectangular hole. The circular saw blade is connected to the outside of the mounting ring. The insertion structure enables modular installation of the saw blade. Radial force is evenly transmitted through the rectangular surface. The tool-free disassembly and assembly design improves blade replacement efficiency. The insertion surface has strong torque resistance.

[0012] Furthermore, the saw blade mounting assembly also includes fixing blocks, fixing bolts, and threaded holes. Two fixing blocks are fixedly connected to the upper and lower sides of the front end of the saw blade mounting ring, and two fixing blocks are fixedly connected to the left and right sides of the rear end of the saw blade mounting ring. Threaded holes are opened at the upper and lower front parts of the outer rectangular insert of the hollow mounting shaft, and threaded holes are opened at the upper and lower rear parts of the outer rectangular insert of the hollow mounting shaft. The fixing bolts are threadedly connected to the fixing blocks and threaded holes.

[0013] The fixing blocks are locked to the threaded holes by fixing bolts. The four fixing blocks are arranged in a cross shape. The bolt preload is converted into the axial clamping force of the mounting ring to prevent loosening during operation. The double fixing ensures the stability of high-speed operation, and the cross layout distributes the force evenly.

[0014] Furthermore, the saw blade mounting assembly also includes a rotating handle and a rotating handle protective cover. Two rotating handles are fixedly connected to the front and rear ends of the threaded rod, and the rotating handle protective cover is threadedly connected to the front and rear ends of the outer side of the hollow mounting shaft.

[0015] The rotating handle is welded to both ends of the threaded rod, and the rotating handle protective cover is threaded to the end of the hollow shaft. The handle provides a fulcrum for effortless operation, and the protective cover prevents foreign objects from entering the transmission area, making it a user-friendly operating design.

[0016] Furthermore, the power conveying assembly includes a first pulley, a motor, a second pulley, and a belt. The second pulley is fixedly connected to the outer rear part of the hollow mounting shaft. A motor is provided at the lower end of the mounting frame. The output shaft of the motor is fixedly connected to the first pulley. The first pulley and the second pulley are connected by a belt.

[0017] The motor drives the second pulley to rotate the hollow shaft via a belt. The first pulley is connected to the motor shaft. The belt drive realizes power transmission and overload protection, and the flexible transmission reduces vibration.

[0018] Furthermore, it also includes a belt conveyor, which is fixedly connected to the upper center of the base plate, and the two circular saw blades are both on the inner side above the belt conveyor.

[0019] The belt conveyor is centrally mounted on the base plate, with double saw blades suspended directly above the conveyor belt. The conveyor belt feeds continuously, and the saw blade assembly simultaneously completes double-sided cutting. The integrated design saves space, and synchronous cutting ensures processing efficiency.

[0020] Compared with the prior art, the beneficial effects of this utility model are: This multi-blade saw, which facilitates blade replacement, has the following advantages:

[0021] 1. This multi-blade saw facilitates blade replacement. The saw blade mounting assembly achieves four-way synchronous telescopic locking through the inclined linkage mechanism of the conical block and the rectangular insert. The rectangular insertion hole design of the saw blade mounting ring, together with the insert, completes the disassembly and assembly. Combined with the cross-shaped distribution of fixing bolts, it forms a double insurance, which greatly improves the efficiency of saw blade replacement while ensuring that the blade saw is firmly fixed.

[0022] 2. This multi-blade saw is easy to replace. The overall operation is simple and the blades can be changed as needed. When changing the blade, the rectangular insert can be retracted at the same time by rotating the handle, which can quickly change multiple blades and reduce the change time. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0026] In the diagram: 1. Base plate, 2. Mounting bracket, 3. Saw blade mounting assembly, 31. Hollow mounting shaft, 32. Threaded rod, 33. Conical block, 34. Rectangular insert, 35. Arc-shaped slider, 36. Saw blade mounting ring, 37. Rectangular insertion hole, 38. Fixing block, 39. Fixing bolt, 310. Threaded hole, 311. Rotating handle, 312. Rotating handle protective cover, 313. Circular saw blade, 4. Power conveyor assembly, 41. Belt pulley one, 42. Motor, 43. Belt pulley two, 44. Belt, 5. Belt conveyor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-3 This embodiment provides a technical solution: a multi-blade saw that facilitates blade replacement, including a base plate 1, a mounting frame 2, a saw blade mounting assembly 3, and a power conveyor assembly 4;

[0029] Base plate 1: A mounting bracket 2 is fixedly connected to the middle of the rear side of the upper end. A saw blade mounting assembly 3 and a power conveyor assembly 4 are mounted on the mounting bracket 2.

[0030] Saw blade mounting assembly 3 includes a hollow mounting shaft 31, a threaded rod 32, a tapered block 33, a rectangular insert 34, and an arc-shaped slider 35. The upper end of the mounting bracket 2 is rotatably connected to the outer rear end of the hollow mounting shaft 31. The inner front and rear connecting section of the hollow mounting shaft 31 is threadedly connected to the threaded rod 32. Two tapered blocks 33 are fixedly connected to the inner side of the threaded rod 32. A rectangular insert 34 is fixedly connected to the outer side of the arc-shaped slider 35. Four rectangular inserts 34 are slidably connected at the same distance on the hollow mounting shaft 31. The arc-shaped slider 35 is slidably connected to the tapered block 33.

[0031] The hollow mounting shaft 31 is fixed to the base plate 1 by the mounting bracket 2. The threaded rod 32 rotates inside the hollow shaft, driving the conical block 33 to move. The four rectangular inserts 34 form a sliding fit with the conical block through the arc-shaped slider 35. The rotation of the threaded rod drives the conical block to move. The rectangular inserts are pushed to extend and retract radially through the inclined structure. The four-way synchronous extension and retraction mechanism realizes rapid locking. The hollow shaft design reduces the overall weight.

[0032] The saw blade mounting assembly 3 also includes a saw blade mounting ring 36, rectangular insertion holes 37 and a circular saw blade 313. Four rectangular insertion holes 37 are evenly provided on the inner side of the saw blade mounting ring 36. The circular saw blade 313 is fixedly connected to the outer side of the rectangular insertion holes 37. The rectangular insertion strip 34 is slidably connected to the saw blade mounting ring 36.

[0033] The saw blade mounting ring 36 is fixed by being inserted into the rectangular insert 34 through the rectangular insertion hole 37. The circular saw blade 313 is connected to the outside of the mounting ring 36. The insertion structure realizes the modular installation of the saw blade. The radial force is evenly transmitted through the rectangular surface. The tool-free disassembly and assembly design improves the blade replacement efficiency. The insertion surface has strong anti-torque capability.

[0034] The saw blade mounting assembly 3 also includes a fixing block 38, a fixing bolt 39, and a threaded hole 310. Two fixing blocks 38 are fixedly connected to the upper and lower sides of the front end of the saw blade mounting ring 36, and two fixing blocks 38 are fixedly connected to the left and right sides of the rear end of the saw blade mounting ring 36. The front of the rectangular insert 34 on the outer side of the hollow mounting shaft 31 has corresponding threaded holes 310 at the top and bottom, and the rear of the rectangular insert 34 on the outer side of the hollow mounting shaft 31 has corresponding threaded holes 310 at the top and bottom. The fixing bolt 39 is threadedly connected to the fixing block 38 and the threaded hole 310.

[0035] The fixing block 38 is locked to the threaded hole 310 by the fixing bolt 39. The four fixing blocks are arranged in a cross shape. The bolt preload is converted into the axial clamping force of the mounting ring to prevent loosening during operation. The double fixing ensures the stability of high-speed operation, and the cross layout distributes the force evenly.

[0036] The saw blade mounting assembly 3 also includes a rotating handle 311 and a rotating handle protective cover 312. The front and rear ends of the threaded rod 32 are respectively fixedly connected to two rotating handles 311, and the front and rear ends of the hollow mounting shaft 31 are threadedly connected to the rotating handle protective cover 312.

[0037] The rotating handle 311 is welded to both ends of the threaded rod, and the rotating handle protective cover 312 is threaded to the end of the hollow shaft. The handle provides a fulcrum for effortless operation, and the protective cover prevents foreign objects from entering the transmission area, which is a user-friendly operation design.

[0038] The power conveyor assembly 4 includes a first pulley 41, a motor 42, a second pulley 43, and a belt 44. The second pulley 43 is fixedly connected to the rear outer side of the hollow mounting shaft 31. The motor 42 is installed at the lower end of the mounting frame 2. The output shaft of the motor 42 is fixedly connected to the first pulley 41. The first pulley 41 and the second pulley 43 are connected by the belt 44.

[0039] Motor 42 drives pulley 43 via belt 44 to rotate hollow shaft. Pulley 41 is connected to motor shaft. Belt drive realizes power transmission and overload protection, and flexible transmission reduces vibration.

[0040] It also includes a belt conveyor 5, which is fixedly connected to the upper middle part of the base plate 1, and two circular saw blades 313 are located on the inner side above the belt conveyor 5.

[0041] The belt conveyor 5 is centrally mounted on the base plate 1, with double saw blades suspended directly above the conveyor belt. The conveyor belt feeds continuously, and the saw blade group synchronously completes double-sided cutting. The integrated design saves space, and synchronous cutting ensures processing.

[0042] The working principle of the multi-blade saw provided by this utility model, which facilitates blade replacement, is as follows: First, the saw blade mounting ring 36 is fitted onto the hollow mounting shaft 31, aligning the rectangular insertion hole 37 with the rectangular insert 34. Rotating the rotating handle 311 drives the threaded rod 32 to move the conical block 33. The inclined plane pushes the arc-shaped slider 35, causing the four rectangular inserts 34 to extend radially and insert into the insertion hole 37 simultaneously. Then, the fixing bolt 39 is passed through the fixing block 38 and locked into the threaded hole 310 to complete the double fixing. The motor 42 is started, and the belt 44 drives the pulley 43 to rotate the hollow shaft 31. The material is conveyed by the belt conveyor 5 to the area below the two circular saw blades 313 for synchronous double-sided cutting. When replacing the saw blade, the rotating handle 311 is rotated in the opposite direction to retract the rectangular insert 34, and the fixing bolt 39 is removed to take off the saw blade mounting ring 36.

[0043] It is worth noting that, in the above embodiments, the input terminal of the motor 42 is electrically connected to the output terminal of the external power supply through an external PLC controller. The motor 42 is a servo motor, and the external PLC controller controls the operation of the motor 42 using methods commonly used in the prior art.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-blade saw that facilitates blade replacement, characterized in that: Includes base plate (1), mounting bracket (2), saw blade mounting assembly (3) and power conveyor assembly (4); Base plate (1): A mounting bracket (2) is fixedly connected to the middle of the rear side of the upper end. A saw blade mounting assembly (3) and a power conveyor assembly (4) are mounted on the mounting bracket (2). Saw blade mounting assembly (3): includes a hollow mounting shaft (31), a threaded rod (32), a conical block (33), a rectangular insert (34), and an arc-shaped slider (35). The upper end of the mounting bracket (2) is rotatably connected to the outer rear end of the hollow mounting shaft (31). The inner front and rear connecting section of the hollow mounting shaft (31) is threaded with a threaded rod (32). Two conical blocks (33) are fixedly connected to the inner side of the threaded rod (32). A rectangular insert (34) is fixedly connected to the outer side of the arc-shaped slider (35). Four rectangular inserts (34) are slidably connected at the same distance on the hollow mounting shaft (31). The arc-shaped slider (35) is slidably connected to the conical block (33).

2. A multi-blade saw with easily replaceable saw blades according to claim 1, characterized in that: The saw blade mounting assembly (3) also includes a saw blade mounting ring (36), rectangular insertion holes (37) and a circular saw blade (313). The inner side of the saw blade mounting ring (36) is evenly provided with four rectangular insertion holes (37), and the outer side of the rectangular insertion holes (37) is fixedly connected to the circular saw blade (313). The rectangular insertion strip (34) is slidably connected to the saw blade mounting ring (36).

3. A multi-blade saw for easy blade replacement according to claim 2, characterized in that: The saw blade mounting assembly (3) also includes a fixing block (38), a fixing bolt (39), and a threaded hole (310). Two fixing blocks (38) are fixedly connected to the upper and lower sides of the front end of the saw blade mounting ring (36), and two fixing blocks (38) are fixedly connected to the left and right sides of the rear end of the saw blade mounting ring (36). The front of the rectangular insert (34) of the hollow mounting shaft (31) is provided with threaded holes (310) corresponding to the upper and lower sides, and the rear of the rectangular insert (34) of the hollow mounting shaft (31) is provided with threaded holes (310) corresponding to the upper and lower sides. The fixing bolt (39) is threadedly connected to the fixing block (38) and the threaded hole (310).

4. A multi-blade saw with easily replaceable saw blades according to claim 1, characterized in that: The saw blade mounting assembly (3) also includes a rotating handle (311) and a rotating handle protective cover (312). The front and rear ends of the threaded rod (32) are respectively fixedly connected to two rotating handles (311), and the front and rear ends of the hollow mounting shaft (31) are threadedly connected to the rotating handle protective cover (312).

5. A multi-blade saw with easily replaceable saw blades according to claim 1, characterized in that: The power conveyor assembly (4) includes a pulley (41), a motor (42), a pulley (43), and a belt (44). The outer rear part of the hollow mounting shaft (31) is fixedly connected to the pulley (43). The lower end of the mounting frame (2) is provided with a motor (42). The output shaft of the motor (42) is fixedly connected to the pulley (41). The pulley (41) and the pulley (43) are connected by the belt (44).

6. A multi-blade saw with easily replaceable saw blades according to claim 2, characterized in that: It also includes a belt conveyor (5), which is fixedly connected to the upper middle part of the base plate (1), and two circular saw blades (313) are located on the inner side above the belt conveyor (5).

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