A modular saw blade quick-change device

Abstract

This utility model relates to the field of saw blade replacement technology and discloses a modular saw blade quick-change device, including a quick-change assembly for quickly replacing saw blades. The quick-change assembly includes a mounting body, a movable shaft, a limiting plate, and a saw blade body. The mounting body has an installation position. The movable shaft is movably and elastically connected to the mounting body, and the limiting plate is fixedly connected to the movable shaft. The saw blade body is elastically connected to the limiting plate. The movable shaft is movably connected to the mounting body and a first spring is sleeved on the movable shaft. Through the cooperation of the components within the quick-change assembly, the saw blade body can be quickly replaced by pressing and rotating, eliminating the need for screw clamping and auxiliary devices for loading and unloading, thus improving loading and unloading efficiency. After the gear and tooth groove mesh, the movable shaft drives the locking block to engage with the locking groove, limiting the rotation position of the movable shaft and preventing damage to the internal components caused by the arbitrary rotation of the movable shaft.

Description

Technical Field

[0001] This utility model belongs to the field of saw blade replacement technology, specifically, it relates to a modular saw blade quick-change device. Background Technology

[0002] Jigsaw blades (also known as wire saw blades or saber saw blades) are the core consumables of jigsaws; choosing the right saw blade is crucial for cutting efficiency, precision, cut quality, and safety.

[0003] The existing connection between saw blades and power tools usually uses a screw clamping structure, and auxiliary tools are required for loading and unloading. At the same time, when the jigsaw is working, the overall vibration is large, and the screws are easy to loosen during operation, which affects the clamping effect of the saw blade. Therefore, in actual use, the technology of quickly loading and unloading the saw blade and stabilizing the saw blade after loading needs to be improved.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] To solve the technical problem of rapid loading and unloading of saw blades, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A modular saw blade quick-change device includes a quick-change assembly for quickly changing saw blades. The quick-change assembly includes a mounting body, a movable shaft, a limiting plate, and a saw blade body. The mounting body has an installation position. The movable shaft is movably and elastically connected to the mounting body, and the limiting plate is fixedly connected to the movable shaft. The saw blade body is elastically connected to the limiting plate.

[0007] In a preferred embodiment of this utility model, the mounting body has a cavity, a toothed groove is formed in the cavity, a gear meshes in the toothed groove, and the gear is fixedly connected to the movable shaft.

[0008] In a preferred embodiment of this utility model, the movable shaft is movably connected to the mounting body, and a first spring is sleeved on the movable shaft, with the ends of the first spring abutting against the corresponding movable shaft and the mounting body respectively.

[0009] In a preferred embodiment of this utility model, the bottom of the mounting body is provided with a snap-fit ​​groove, a snap-fit ​​block is engaged in the snap-fit ​​groove, and the snap-fit ​​block is fixedly connected to the movable shaft.

[0010] In a preferred embodiment of this utility model, a limiting block is fixedly connected to the limiting plate, and a through hole is provided on the saw blade body, which engages with the limiting block.

[0011] In a preferred embodiment of this utility model, the limiting plate is symmetrically provided with support rods, each support rod is fixedly connected to the limiting plate, and each support rod is slidably connected to a clamping block.

[0012] In a preferred embodiment of this utility model, each of the support rods is fitted with a second spring, and the end of each second spring is fixedly connected to the corresponding limiting plate and clamping block.

[0013] In a preferred embodiment of this utility model, a protective shell is fixedly connected to the mounting body, and the protective shell restricts the movable shaft and the first spring inside.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This modular saw blade quick-change device enables the saw blade body to be quickly changed by pressing and rotating through the cooperation of the components within the quick-change assembly. It eliminates the need for screw clamping and auxiliary devices for loading and unloading, thus improving loading and unloading efficiency.

[0016] 2. In this modular saw blade quick-change device, after the gear and tooth groove mesh, the movable shaft drives the locking block to engage with the locking groove, thereby restricting the rotation position of the movable shaft and preventing the movable shaft from rotating arbitrarily and causing damage to the internal components.

[0017] 3. This modular saw blade quick-change device uses a second spring to pull the clamping block inward and clamp the side of the saw blade body, clamping saw blade bodies of different sizes. During clamping, the saw blade body is clamped by the cooperation of the limiting plate, the bottom of the mounting body and the clamping block.

[0018] 4. This modular saw blade quick-change device protects the movable shaft inside the protective shell, thus preventing the movable shaft from being exposed during operation. If the movable shaft comes into contact with any object and is pressed down, it will cause the movable shaft to drive the separation between the gear and the tooth groove, causing the position of the limiting plate to shift.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure between the mounting body and the movable shaft of this utility model;

[0024] Figure 4 This is a schematic diagram of the bottom structure of the mounting body of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure between the limiting plate and the saw blade body of this utility model.

[0026] In the diagram: 1. Mounting body; 11. Protective shell; 2. Movable shaft; 21. First spring; 22. Gear; 23. Tooth groove; 24. Snap-fit ​​block; 25. Snap-fit ​​groove; 3. Limiting plate; 31. Limiting block; 4. Saw blade body; 5. Clamping block; 51. Support rod; 52. Second spring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0028] Please see Figure 1-5 A modular saw blade quick-change device includes a quick-change assembly for quickly replacing saw blades. The quick-change assembly includes a mounting body 1, a movable shaft 2, a limiting plate 3, and a saw blade body 4. The mounting body 1 has an installation position. The movable shaft 2 is movably and elastically connected to the mounting body 1, and the limiting plate 3 is fixedly connected to the movable shaft 2. The saw blade body 4 is elastically connected to the limiting plate 3. Through the cooperation of the components within the quick-change assembly, the saw blade body 4 can be quickly replaced by pressing and rotating, without the need for screw clamping and auxiliary devices for loading and unloading, thus improving loading and unloading efficiency.

[0029] The mounting body 1 has a cavity with a toothed groove 23 inside. A gear 22 meshes within the toothed groove 23 and is fixedly connected to a movable shaft 2. The movable shaft 2 is movably connected to the mounting body 1. A first spring 21 is fitted onto the movable shaft 2, with its ends abutting against the corresponding movable shaft 2 and mounting body 1. The bottom of the mounting body 1 has a snap-fit ​​groove 25, which engages with a snap-fit ​​block 24, which is fixedly connected to the movable shaft 2. When the movable shaft 2 is pressed downwards, it compresses the first spring 21, causing the gear 22 to engage with the toothed groove 23. Separate the two parts, disengage them, manually rotate the movable shaft 2, the movable shaft 2 drives the limiting plate 3 to move, place the saw blade body 4 between the limiting plate 3 and after assembly, manually rotate the movable shaft 2 to reset, the deformation generated by the compression of the first spring 21 is applied to the movable shaft 2, the movable shaft 2 is driven to move upward, and in the upward movement of the movable shaft 2, the gear 22 moves upward, and the gear 22 meshes with the tooth groove 23, realizing the quick replacement of the saw blade body 4 by pressing and rotating, without the need for screw clamping and auxiliary devices for loading and unloading, thus improving the efficiency of loading and unloading;

[0030] In actual use, the meshing between gear 22 and tooth groove 23 inevitably requires a gap. The existence of the gap causes the internal components to be damaged due to continuous shaking during operation after the saw blade body 4 and the limiting plate 3 are loaded. Therefore, after gear 22 and tooth groove 23 mesh, the movable shaft 2 drives the locking block 24 to engage with the locking groove 25, which restricts the rotation position of the movable shaft 2 and prevents the movable shaft 2 from rotating arbitrarily and causing damage to the internal components.

[0031] The limiting plate 3 is fixedly connected to a limiting block 31. The saw blade body 4 has a through hole that engages with the limiting block 31. Support rods 51 are symmetrically arranged on the limiting plate 3. Each support rod 51 is fixedly connected to the limiting plate 3. Each support rod 51 is slidably connected to a clamping block 5. Each support rod 51 is fitted with a second spring 52. The end of each second spring 52 is fixedly connected to the corresponding limiting plate 3 and clamping block 5, thus connecting the saw blade body 4 to the limiting plate 3 and the limiting block on the limiting plate 3. After engagement 31, the side of the saw blade body 4 abuts against the clamping block 5. The clamping block 5 is pushed by the saw blade body 4, and the clamping block 5 stretches the second spring 52. The second spring 52 deforms and applies the deformation force to the clamping block 5. The clamping block 5 is pulled inward by the second spring 52 and clamps the side of the saw blade body 4. Saw blade bodies 4 of different sizes are clamped. During clamping, the saw blade body 4 is clamped by the cooperation of the limiting plate 3, the bottom of the mounting body 1 and the clamping block 5.

[0032] The mounting body 1 is fixedly connected to a protective shell 11, which restricts the movable shaft 2 and the first spring 21 inside. The protective shell 11 protects the movable shaft 2 inside, thereby preventing the movable shaft 2 from being exposed during operation. When the movable shaft 2 comes into contact with any object and is pressed down, it causes the movable shaft 2 to drive the separation between the gear 22 and the tooth groove 23, causing the position of the limiting plate 3 to shift.

[0033] It is worth noting that the mounting body 1 is fixedly connected to the output end of the power tool. Since this optimization scheme is aimed at the quick loading and unloading of the saw blade body 4, the power tool part is not described in detail in this article. Moreover, the power tool for the jigsaw is a well-known technology in this field and will not be described in detail here.

[0034] Working Principle: When the movable shaft 2 is pressed down manually, it compresses the first spring 21. This causes the gear 22 to disengage from the tooth groove 23. Manually rotating the movable shaft 2 moves the limiting plate 3, placing the saw blade body 4 between it and the limiting plate 3. After assembly, manually rotating the movable shaft 2 resets it. The deformation generated by the compression of the first spring 21 applies force to the movable shaft 2, causing it to move upwards. This upward movement of the movable shaft 2 moves the gear 22 upwards, engaging it with the tooth groove 23. This allows for quick replacement of the saw blade body 4 during pressing and rotating, eliminating the need for screw clamping and auxiliary devices, thus improving efficiency. However, in actual use, a gap is necessary for the engagement between the gear 22 and the tooth groove 23. This gap causes continuous shaking during operation after the saw blade body 4 is loaded onto the limiting plate 3, potentially damaging internal components. Therefore, the gap between the gear 22 and the tooth groove... After engagement, the movable shaft 2 drives the locking block 24 to engage with the locking groove 25, restricting the rotation position of the movable shaft 2 and preventing damage to internal components from arbitrary rotation. After the saw blade body 4 is engaged with the limiting plate 3 and the limiting block 31 on the limiting plate 3, the side of the saw blade body 4 abuts against the clamping block 5. The clamping block 5 is pushed by the saw blade body 4, and the clamping block 5 stretches the second spring 52. The second spring 52 deforms and applies the deformation force to the clamping block 5. 2. Pull the clamping block 5 inward and clamp the side of the saw blade body 4. Clamp saw blade bodies 4 of different sizes. During clamping, the saw blade body 4 is clamped by the cooperation of the limiting plate 3, the bottom of the mounting body 1 and the clamping block 5. The movable shaft 2 is protected inside by the protective shell 11, so that the movable shaft 2 is not exposed during operation. When the movable shaft 2 comes into contact with any object and is pressed down, the movable shaft 2 drives the separation between the gear 22 and the tooth groove 23, causing the position of the limiting plate 3 to shift.

[0035] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A modular saw blade quick-change device, characterized in that, include: The quick-change assembly is used to quickly change the saw blade. The quick-change assembly includes a mounting body (1), a movable shaft (2), a limiting plate (3), and a saw blade body (4). The mounting body (1) has an installation position. The movable shaft (2) is movably and elastically connected to the mounting body (1), and the limiting plate (3) is fixedly connected to the movable shaft (2). The saw blade body (4) is elastically connected to the limiting plate (3).

2. The modular saw blade quick-change device according to claim 1, characterized in that, The mounting body (1) has a cavity, and a toothed groove (23) is provided inside the cavity. A gear (22) meshes in the toothed groove (23), and the gear (22) is fixedly connected to the movable shaft (2).

3. The modular saw blade quick-change device according to claim 2, characterized in that, The movable shaft (2) is movably connected to the mounting body (1). A first spring (21) is sleeved on the movable shaft (2). The end of the first spring (21) abuts against the corresponding movable shaft (2) and the mounting body (1).

4. The modular saw blade quick-change device according to claim 1, characterized in that, The bottom of the mounting body (1) is provided with a snap-fit ​​groove (25), which engages with a snap-fit ​​block (24), and the snap-fit ​​block (24) is fixedly connected to the movable shaft (2).

5. The modular saw blade quick-change device according to claim 1, characterized in that, A limiting block (31) is fixedly connected to the limiting plate (3), and a through hole is opened on the saw blade body (4), which engages with the limiting block (31).

6. The modular saw blade quick-change device according to claim 1, characterized in that, Support rods (51) are symmetrically arranged on the limiting plate (3). Each support rod (51) is fixedly connected to the limiting plate (3), and each support rod (51) is slidably connected to a clamping block (5).

7. The modular saw blade quick-change device according to claim 6, characterized in that, Each of the support rods (51) is fitted with a second spring (52), and the end of each second spring (52) is fixedly connected to the corresponding limiting plate (3) and clamping block (5).

8. The modular saw blade quick-change device according to claim 1, characterized in that, A protective shell (11) is fixedly connected to the mounting body (1), and the protective shell (11) restricts the movable shaft (2) and the first spring (21) inside.

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