Quick dismounting device for the saw blade of a circular saw

Abstract

The utility model relates to the field of disc saw, disclose a quick dismounting device of saw blade of disc saw, including mounting panel, the inner wall rotationally connected with transmission shaft of mounting panel, the output of transmission shaft is provided with fixed mechanism, the fixed mechanism includes installation subassembly and connecting component, be provided with cutting saw blade between installation subassembly and connecting component, installation subassembly includes mounting seat, the mounting seat fixed connection is in transmission shaft, the outer wall fixed connection of mounting seat has mounting disc. In the utility model, through setting up installation subassembly, when the deformation of the fixed inserted post appears when cutting saw blade long -term use causes, can utilize the push -out of inserted post by push -out plate, avoid the situation that cutting saw blade and connecting component jam, influence dismounting effect, and set up the pressure frame of auxiliary pushing on the mounting panel, utilize the lever pushing push -out plate of pressure frame, increase the dismounting speed and effect of device, further improve the practicality of device.

Description

Technical Field

[0001] This utility model relates to the field of circular saws, and in particular to a device for quick disassembly of the saw blade of a circular saw. Background Technology

[0002] A circular saw is a high-efficiency cutting tool whose core component is a high-speed rotating circular saw blade. It is widely used for cutting materials such as wood, metal, and plastic.

[0003] After prolonged operation, the saw blade of a circular saw generates heat due to the reaction force of the cutting force. This friction between the saw blade surface and the spindle end face causes a certain amount of adhesion between them. Furthermore, the saw blade is secured to the spindle using clips and multiple bolts. The long-term stress on the saw blade can cause deformation at the bolt joints and individual bolts, making it difficult to disassemble the saw blade. To address this issue, a quick-disassembly device for the circular saw blade is proposed. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a quick disassembly device for the saw blade of a circular saw, which aims to improve the problem in the prior art that "the saw blade of a circular saw is subjected to the reaction force of the chipping force during long-term use, causing friction and adhesion between the saw blade and the spindle and deformation of the fixing bolts, resulting in difficulty in disassembling the saw blade".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick-release device for a circular saw blade, comprising a mounting plate, a drive shaft rotatably connected to the inner wall of the mounting plate, a fixing mechanism provided at the output end of the drive shaft, the fixing mechanism comprising a mounting component and a connecting component, a cutting saw blade disposed between the mounting component and the connecting component, the mounting component comprising a mounting base, the mounting base being fixedly connected to the drive shaft, a mounting disc being fixedly connected to the outer wall of the mounting base, a pusher being slidably connected to the outer wall of the mounting base, a limiting ring being fixedly connected to the inner wall of the mounting base, a sliding block being slidably connected to the inner wall of the limiting ring, and magnetic blocks being fixedly connected to the inner walls of both the limiting ring and the sliding block.

[0006] As a further description of the above technical solution:

[0007] The connecting assembly includes a pin that is inserted into the inner wall of the mounting base and the push plate. A connecting plate is fixedly connected to the end of the pin away from the push plate. A connecting seat is fixedly connected to the inner wall of the connecting plate. A fixing groove is provided on the outer wall of the connecting seat. A threaded rod is provided on the inner wall of the connecting seat. A knob is fixedly connected to one end of the threaded rod, and a push block is fixedly connected to the other end of the threaded rod.

[0008] As a further description of the above technical solution:

[0009] The push plate is slidably connected to the inner wall of the mounting plate, the mounting seat is sleeved on the outer wall of the connecting seat, the limiting ring is inserted into the inner wall of the connecting seat, and the sliding block is inserted into the inner wall of the fixing groove.

[0010] As a further description of the above technical solution:

[0011] The insert is inserted into the inner wall of the cutting saw blade.

[0012] As a further description of the above technical solution:

[0013] The sliding block is provided in multiple sets, and the multiple sets of sliding blocks are arranged in a rotating array with the center line of the mounting base as the rotation axis, and the shape of the sliding block near the center line of the mounting base is set to arc.

[0014] As a further description of the above technical solution:

[0015] The push block is shaped like a frustum of a cone, and the inclined surface of the frustum of a cone of the push block is in contact with the sliding block.

[0016] As a further description of the above technical solution:

[0017] Both the mounting base and the connecting base are designed with a concave cylindrical bowl shape.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the mounting plate is rotatably connected to a pressing frame, which is elastically connected to the mounting plate by a torsion spring. The pressing frame is designed to be gate-shaped.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by setting up an installation component, when the insert used for fixing the cutting saw blade deforms due to long-term use, the insert can be pushed out by the push plate, avoiding the cutting saw blade and connecting component from getting stuck and affecting the disassembly effect. In addition, an auxiliary pushing pressure frame is set on the mounting plate, and the push plate is pushed by the lever of the pressure frame, which increases the disassembly speed and effect of the device and further improves the practicality of the device.

[0022] 2. In this utility model, by setting a connecting component, when replacing the cutting saw blade, the cutting saw blade can be installed on the connecting component first, and then the sliding block can be pushed by the push block to fix the connecting component and the installation component. The sliding block of the ring array will not be affected by the rotation of the saw blade, which will cause the connection to loosen, further improving the use effect of the device. Attached Figure Description

[0023] Figure 1This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a three-dimensional cross-sectional view of the overall device in this utility model;

[0025] Figure 3 This utility model Figure 2 An enlarged 3D structural diagram at point A in the middle;

[0026] Figure 4 This is a three-dimensional structural breakdown diagram of the mounting component and the connecting component in this utility model;

[0027] Figure 5 This is a three-dimensional cross-sectional view of the mounting components in this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the connecting component in this utility model.

[0029] Legend:

[0030] 1. Mounting plate; 2. Connecting assembly; 21. Connecting plate; 22. Insert post; 23. Connecting seat; 24. Threaded rod; 25. Knob; 26. Push block; 27. Fixing groove; 3. Pressing frame; 4. Cutting saw blade; 5. Drive shaft; 6. Mounting assembly; 61. Mounting seat; 62. Mounting plate; 63. Push plate; 64. Magnetic block; 65. Sliding block; 66. Restricting ring; 7. Torsion spring. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 , Figure 2 , Figure 3This utility model provides an embodiment of a quick-release device for a circular saw blade, comprising a mounting plate 1 connected to the circular saw body for supporting and mounting a drive shaft 5. The inner wall of the mounting plate 1 is rotatably connected to the drive shaft 5 for transmitting power from the motor to the cutting saw blade 4. The drive shaft 5 is an existing structure, readily achievable by those skilled in the art, and therefore will not be described in detail here. A fixing mechanism is provided at the output end of the drive shaft 5 for mounting and fixing the saw blade. The fixing mechanism includes a mounting component 6 and a connecting component 2. A cutting saw blade 4 for cutting materials is disposed between the mounting component 6 and the connecting component 2. The mounting component 6 includes a mounting seat 61 for mounting and connecting other components. The mounting seat 61 is fixedly connected to the drive shaft 5. At the output end of the drive shaft 5, the mounting base 61 drives other components to rotate. The outer wall of the mounting base 61 is fixedly connected to the mounting plate 62, which is used to fix the cutting saw blade 4 in conjunction with the connecting component 2. The outer wall of the mounting base 61 is slidably connected to the push plate 63 for pushing the fixed insert 22 out of the mounting plate 62. The inner wall of the mounting base 61 is fixedly connected to the limiting ring 66 for limiting the sliding block 65. The inner wall of the limiting ring 66 is slidably connected to the sliding block 65 for connecting the connecting component 2 and the mounting component 6. The inner walls of the limiting ring 66 and the sliding block 65 are both fixedly connected to the magnetic blocks 64. After the push block 26 moves out of the limiting ring 66, the magnetic blocks 64 on the limiting ring 66 attract the magnetic blocks 64 installed on the sliding block 65, helping the sliding block 65 to reset and disengage from the fixing groove 27.

[0033] Reference Figure 3 , Figure 4 , Figure 6 The connecting assembly 2 includes a post 22 for fixing the saw blade between the connecting assembly 2 and the mounting assembly 6. The post 22 is inserted into the inner wall of the mounting base 61 and the push plate 63, allowing the fixed cutting saw blade 4 to rotate with the mounting base 61. A connecting plate 21 is fixedly connected to the end of the post 22 away from the push plate 63. The connecting plate 21 is used to install the post 22. A connecting seat 23 for installing other components is fixedly connected to the inner wall of the connecting plate 21. A fixing groove 27 for inserting and fixing a sliding block 65 is provided on the outer wall of the connecting seat 23. The inner wall of the receiving seat 23 is provided with a threaded rod 24. The rotation of the threaded rod 24 pushes the push block 26 to move. One end of the threaded rod 24 is fixedly connected to a knob 25 for easy rotation by the operator. The other end of the threaded rod 24 is fixedly connected to a push block 26 for pushing the sliding block 65 into the fixing groove 27. The insert 22 is inserted into the inner wall of the cutting saw blade 4 to fix the cutting saw blade 4. The shape of the push block 26 is set as a frustum of a cone. The inclined surface of the edge pushes the sliding block 65. The frustum of a cone inclined surface of the push block 26 contacts the sliding block 65.

[0034] Reference Figure 3 , Figure 4 , Figure 5The push plate 63 is slidably connected to the inner wall of the mounting plate 62. During the installation of the cutting saw blade 4, it slides against the inner wall of the mounting plate 62 due to the push of the insert post 22. When the insert post 22 deforms due to long-term use of the cutting saw blade 4, the push plate 63 can assist in pulling the insert post 22 out of the inner wall of the mounting plate 62. The mounting base 61 is sleeved on the outer wall of the connecting base 23 to stabilize the connection between the connecting component 2 and the mounting component 6. The limiting ring 66 is inserted into the inner wall of the connecting base 23 to stably fix the connecting base 23. The sliding block 65 is inserted into the inner wall of the fixing groove 27 to fix the connecting base 23 to the inner wall of the mounting base 61. The sliding block 65 is equipped with... Multiple sets of sliding blocks 65 are arranged in a rotating array around the center line of the mounting base 61. The side of the sliding block 65 closest to the center line of the mounting base 61 is arc-shaped. When the push block 26 moves, it can push the sliding block 65 evenly towards the inner wall of the fixing groove 27. The mounting base 61 and the connecting base 23 are both shaped as concave cylindrical bowls for placing other components. The inner wall of the mounting plate 1 is rotatably connected to a pressing frame 3 to assist in pushing the push plate 63. The pressing frame 3 is elastically connected to the mounting plate 1 by a torsion spring 7 and does not contact it when the fixing mechanism rotates. The pressing frame 3 is shaped like a door to make the pushing more stable.

[0035] Working principle: When the cutting saw blade 4 needs to be installed, the operator first aligns the inner hole of the cutting saw blade 4 with the insert post 22 for pre-positioning installation. Then, the connecting assembly 2 is pushed towards the installation assembly 6. At this time, during the insertion of the insert post 22 into the installation plate 62, its end will push the push plate 63 to slide axially along the inner wall of the installation plate 62. During this process, the movement of the push plate 63 makes room for subsequent disassembly. Then, the knob 25 of the connecting assembly 2 is rotated, which drives the threaded rod 24 to rotate. The rotation of the threaded rod 24 is converted into the axial movement of the push block 26 through the threaded pair. Since the push block 26 adopts a frustum-shaped design, its inclined surface contacts the arc-shaped end face of multiple sliding blocks 65, generating a radial component force that pushes each sliding block 65 evenly outward. When the sliding block 65 is completely pushed into the fixing groove 27 of the connecting seat 23, the connecting assembly 2 and the installation assembly 6 form a rigid connection, and the cutting saw blade 4 is firmly clamped between the installation plate 62 and the connecting plate 21, realizing power transmission.

[0036] When the cutting saw blade 4 needs to be replaced, the operator rotates the knob 25 in the opposite direction, causing the push block 26 to move away from the sliding block 65. At this time, the magnetic attraction of the magnetic block 64 causes the sliding block 65 to retract radially along the inner wall of the limiting ring 66, releasing the sliding block 65 from the fixed groove 27. When the insertion post 22 deforms, the operator can pull the pressing frame 3 and use the lever of the pressing frame 3 to push the push plate 63 to push the insertion post 22 out of the mounting plate 62, thus achieving quick disassembly of the cutting saw blade 4.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release device for the saw blade of a circular saw, comprising a mounting plate (1), characterized in that: The inner wall of the mounting plate (1) is rotatably connected to a drive shaft (5), and the output end of the drive shaft (5) is provided with a fixing mechanism. The fixing mechanism includes a mounting component (6) and a connecting component (2). A cutting saw blade (4) is provided between the mounting component (6) and the connecting component (2). The mounting assembly (6) includes a mounting base (61) which is fixedly connected to the drive shaft (5). A mounting plate (62) is fixedly connected to the outer wall of the mounting base (61). A push plate (63) is slidably connected to the outer wall of the mounting base (61). A limiting ring (66) is fixedly connected to the inner wall of the mounting base (61). A sliding block (65) is slidably connected to the inner wall of the limiting ring (66). A magnetic block (64) is fixedly connected to the inner walls of both the limiting ring (66) and the sliding block (65).

2. The quick-release device for the saw blade of a circular saw according to claim 1, characterized in that: The connecting assembly (2) includes a plug (22), which is inserted into the inner wall of the mounting base (61) and the push plate (63). A connecting plate (21) is fixedly connected to one end of the plug (22) away from the push plate (63). A connecting seat (23) is fixedly connected to the inner wall of the connecting plate (21). A fixing groove (27) is opened on the outer wall of the connecting seat (23). A threaded rod (24) is provided on the inner wall of the connecting seat (23). A knob (25) is fixedly connected to one end of the threaded rod (24), and a push block (26) is fixedly connected to the other end of the threaded rod (24).

3. The quick-release device for the saw blade of a circular saw according to claim 1, characterized in that: The push plate (63) is slidably connected to the inner wall of the mounting plate (62), the mounting seat (61) is sleeved on the outer wall of the connecting seat (23), the limiting ring (66) is inserted into the inner wall of the connecting seat (23), and the sliding block (65) is inserted into the inner wall of the fixing groove (27).

4. The quick-release device for the saw blade of a circular saw according to claim 2, characterized in that: The insert (22) is inserted into the inner wall of the cutting saw blade (4).

5. The quick-release device for the saw blade of a circular saw according to claim 1, characterized in that: The sliding block (65) is provided in multiple sets, and the multiple sets of sliding blocks (65) are arranged in a rotating array with the center line of the mounting base (61) as the rotation axis, and the side of the sliding block (65) near the center line of the mounting base (61) is set to be arc-shaped.

6. The quick-release device for the saw blade of a circular saw according to claim 2, characterized in that: The push block (26) is shaped like a frustum of a cone, and the inclined surface of the frustum of a cone of the push block (26) is in contact with the sliding block (65).

7. The quick-release device for the saw blade of a circular saw according to claim 1, characterized in that: Both the mounting base (61) and the connecting base (23) are designed to be concave cylindrical bowl shapes.

8. The quick-release device for the saw blade of a circular saw according to claim 1, characterized in that: The inner wall of the mounting plate (1) is rotatably connected to a pressing frame (3), and the pressing frame (3) is elastically connected to the mounting plate (1) by a torsion spring (7). The shape of the pressing frame (3) is set as a door shape.

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