Grinding machine with protection function

Abstract

The utility model relates to the technical field of grinding machines, in particular to a grinding machine with a protection function, which comprises a driving shaft, the side wall of the driving shaft is fixedly connected with a machine body, the machine body is fan-shaped, a grinding wheel is arranged on the inner side of the machine body, the grinding wheel and the driving shaft coaxially rotate, and a rotation protection mechanism is arranged on the inner side of the machine body. A limiting mechanism is arranged on the outer side of the machine body, a rotating protection mechanism comprises a movable groove formed in the side wall of the machine body, a fan-shaped protection frame is rotationally installed in the movable groove, and a magnetic positioning frame is fixedly connected to the tail end of the outer side of the fan-shaped protection frame. Idling protection of the grinding machine before work is achieved through the rotation protection mechanism, fragment splashing caused by high-speed rotation of the grinding wheel after work is started is avoided, use safety of the grinding machine is effectively improved, meanwhile, the grinding wheel is sealed and protected by pulling the fan-shaped protection frame, full sealing of the grinding wheel during idling is guaranteed, and safety of the grinding machine is improved. And the protection safety of the grinding wheel is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machines, in particular to a grinding machine with a protective function. Background Art

[0002] A grinding machine is a device used to sharpen various tools. Among them, handheld grinding machines are widely used in various production workshops because of their easy portability and flexible grinding angles.

[0003] During long-term use, the grinding wheel of the existing grinding machine has reduced structural strength and has certain hidden dangers of cracking, threatening the safety of operators. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a grinding wheel machine with a protective function, which solves the technical problem of the hidden danger of collapse.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a grinding machine with a protective function, comprising a driving shaft, the side wall of the driving shaft is fixedly connected to a body, the body is arranged in a fan shape, a grinding wheel is arranged on the inner side of the body, the grinding wheel rotates coaxially with the driving shaft, a rotation protection mechanism is arranged on the inner side of the body, and a limiting mechanism is arranged on the outer side of the body;

[0006] The rotation protection mechanism comprises a movable groove provided on the side wall of the machine body, a fan-shaped protection frame is rotatably installed inside the movable groove, a magnetic positioning frame is fixedly connected to the outer end of the fan-shaped protection frame, and a push plate is fixedly installed at the center of the outer wall of the magnetic positioning frame;

[0007] The other side wall of the body is fixedly connected with a magnetic positioning plate, and the magnetic positioning plate and the magnetic positioning frame have the same area.

[0008] Preferably, the limiting mechanism includes two fixing plates fixedly connected to the side walls of the machine body near the fan-shaped protective frame, and limiting rods are slidably installed inside the fixing plates. The bottom wall of the limiting rod is fixedly connected to a spring, and the other end of the spring is fixedly connected to the fixing plate.

[0009] Preferably, the sides of the limit rods that are close to each other are both configured as arc-shaped surfaces.

[0010] Preferably, the width of the push plate is greater than the distance between adjacent limiting rods.

[0011] By means of the above technical solution, the utility model provides a grinding machine with a protective function, which has at least the following beneficial effects:

[0012] 1. The utility model realizes idling protection of the grinding wheel machine before working through the rotation protection mechanism, avoids the splashing of fragments caused by the high-speed rotation of the grinding wheel after the work starts, and effectively improves the safety of the use of the grinding wheel machine.

[0013] 2. The utility model closes and protects the grinding wheel by pulling the fan-shaped protection frame, ensuring that the grinding wheel is fully closed when idling, thereby greatly improving the safety of grinding wheel protection.

[0014] 3. The utility model realizes stable limiting clamping of the push plate through the limiting mechanism, and at the same time realizes stable limiting of the fan-shaped protective frame when the grinding wheel is working through the coordination setting between the fixed plate, the limiting rod and the spring, thereby avoiding the obstruction of the fan-shaped protective frame when the grinding wheel is working, which is efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the fan-shaped protection frame of the utility model after closing;

[0018] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure in the middle.

[0019] In the figure: 1, driving shaft; 2, machine body; 3, grinding wheel; 4, rotation protection mechanism; 40, fan-shaped protection frame; 41, movable groove; 42, magnetic positioning frame; 43, push plate; 5, magnetic positioning plate; 6, limiting mechanism; 60, fixing plate; 61, limiting rod; 62, spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] Please refer to Figure 1-Figure 2A grinding machine with a protective function comprises a driving shaft 1, a side wall of the driving shaft 1 is fixedly connected to a body 2, the body 2 is arranged in a fan shape, a grinding wheel 3 is arranged on the inner side of the body 2, the grinding wheel 3 rotates coaxially with the driving shaft 1, a rotation protection mechanism 4 is arranged on the inner side of the body 2, and a limiting mechanism 6 is arranged on the outer side of the body 2. The rotation protection mechanism 4 is used to realize idling protection of the grinding machine before working, so as to avoid the splashing of fragments caused by the high-speed rotation of the grinding wheel 3 after the work starts, and effectively improve the use safety of the grinding machine;

[0023] The rotation protection mechanism 4 includes a movable groove 41 provided on the side wall of the machine body 2, a fan-shaped protection frame 40 is rotatably installed inside the movable groove 41, a magnetic positioning frame 42 is fixedly connected to the outer end of the fan-shaped protection frame 40, and a push plate 43 is fixedly installed at the center of the outer wall of the magnetic positioning frame 42. When in use, the push plate 43 is pulled to close the fan-shaped protection frame 40, so that the side wall of the magnetic positioning frame 42 and the magnetic positioning plate 5 fit each other. At this time, the grinding machine is turned on to make the drive shaft 1 rotate at high speed, and the grinding wheel 3 is closed and protected by pulling the fan-shaped protection frame 40 while the grinding wheel 3 is idling, so that the grinding wheel is fully protected when idling, and the protection safety of the grinding wheel 3 is greatly improved;

[0024] As a preferred technical solution of this embodiment, the other side wall of the body 2 is fixedly connected with a magnetic positioning plate 5, and the magnetic positioning plate 5 and the magnetic positioning frame 42 have the same area, ensuring that the two fit each other under the effect of magnetic adsorption.

[0025] Embodiment 2

[0026] Please refer to Figure 2-Figure 3 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0027] The limiting mechanism 6 includes two fixed plates 60 fixedly connected to the side walls of the machine body 2 near the fan-shaped protection frame 40, and the limiting rods 61 are slidably installed inside the fixed plates 60. The bottom wall of the limiting rod 61 is fixedly connected with a spring 62, and the other end of the spring 62 is fixedly connected to the fixed plate 60. When the fan-shaped protection frame 40 is opened, the push plate 43 is pushed to make its side wall contact with the limiting rod 61, and the limiting rod 61 slides along the inside of the fixed plate 60, and the spring 62 is compressed, and the limiting rod 61 is used to limit the push plate 43. The limiting mechanism 6 realizes stable limiting clamping of the push plate 43. At the same time, the matching arrangement between the fixed plate 60, the limiting rod 61 and the spring 62 realizes stable limiting of the fan-shaped protection frame 40 when the grinding wheel 3 is working, thereby avoiding the shielding of the fan-shaped protection frame 40 when the grinding wheel 3 is working, which is efficient and convenient.

[0028] As a preferred technical solution of this embodiment, the sides of the limiting rods 61 that are close to each other are both set as arc surfaces to ensure that when the push plate 43 contacts the limiting rods 61, the limiting rods 61 are driven to slide;

[0029] As a preferred technical solution of this embodiment, the width value of the push plate 43 is greater than the distance value of the adjacent limit rod 61, ensuring that when the top wall and the bottom wall of the push plate 43 contact the arc surface of the limit rod 61, the limit rod 61 is driven to slide. When the push plate 43 slides to the other side of the limit rod 61, the spring 62 is restored and the limit rod 61 limits the push plate 43.

[0030] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0031] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0032] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding machine with a protective function, comprising a drive shaft (1), characterized in that: The side wall of the driving shaft (1) is fixedly connected to a body (2); the body (2) is arranged in a fan shape; a grinding wheel (3) is arranged on the inner side of the body (2); the grinding wheel (3) rotates coaxially with the driving shaft (1); a rotation protection mechanism (4) is arranged on the inner side of the body (2); and a limiting mechanism (6) is arranged on the outer side of the body (2); The rotation protection mechanism (4) comprises a movable groove (41) provided on the side wall of the machine body (2), a fan-shaped protection frame (40) being rotatably mounted inside the movable groove (41), a magnetic positioning frame (42) being fixedly connected to the outer end of the fan-shaped protection frame (40), and a push plate (43) being fixedly mounted at the center of the outer wall of the magnetic positioning frame (42).

2. A grinding machine with protective function according to claim 1, characterized in that: The other side wall of the machine body (2) is fixedly connected with a magnetic positioning plate (5), and the magnetic positioning plate (5) and the magnetic positioning frame (42) have the same area.

3. A grinding machine with protective function according to claim 1, characterized in that: The limiting mechanism (6) comprises two fixing plates (60) fixedly connected to the side walls of the machine body (2) close to the fan-shaped protective frame (40), the fixing plates (60) are each slidably mounted with a limiting rod (61), the bottom wall of the limiting rod (61) is fixedly connected to a spring (62), and the other end of the spring (62) is fixedly connected to the fixing plate (60).

4. A grinding machine with protective function according to claim 3, characterized in that: The sides of the limiting rods (61) that are close to each other are both arranged as arc-shaped surfaces.

5. The grinding machine with protective function according to claim 3, characterized in that: The width of the push plate (43) is greater than the distance between adjacent limiting rods (61).

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