Grinding disc connecting structure of grinding machine

Abstract

The invention belongs to the field of grinding machine millstone quick-change connection, and particularly relates to a grinding machine millstone connecting structure. A through hole is formed in the position, corresponding to the position of the hook arranged on the polishing pad, of the bottom plate, and the hook penetrates through the through hole to be clamped to the edge of the through hole. And the hook is provided with a clamping jaw which is clamped at the edge of the through hole. The button is arranged on the fan cover, and a bulge is arranged on the button; the protrusions push the hooks to deform, so that the clamping jaws on the hooks break away from the edges of the through holes of the bottom plate, and the polishing pad breaks away from the bottom plate. According to the technical scheme, the polishing pad can be replaced simply, quickly and reliably through a quick replacement structure.

Description

Technical Field

[0001] The present application belongs to the field of quick-change connection of grinding discs of grinding machines, and specifically relates to a connection structure of grinding discs of grinding machines. Background Art

[0002] In a portable sander, the sanding pad is fixedly connected to the body by screws, such as in patent No. 2024100475358, and the sanding pad is fastened to the bearing box by screws. For example, in patent No. 2019100365520, after the bottom plate shell is threadedly connected to the threaded rod, the limiting column of the bottom plate assembly is aligned with the limiting hole on the main body through the operating member, and then the shock absorbing function is realized through the elastic element.

[0003] In the above technical solution, the connection method between the base plate assembly or the grinding pad and the main body is common. This connection method is reliable, but it is not easy to replace the grinding pad. It needs to be replaced with the help of a wrench, which is inconvenient. In particular, in patent No. 2019100365520, the base plate assembly also needs to integrate the support part and the base plate shaft, which is costly. It is particularly important to note that the triangular grinding pad and the square grinding pad need to be disassembled and replaced each time they are replaced, which is inefficient. Summary of the invention

[0004] The purpose of the embodiment of the present application is to provide a grinding machine grinding disc connection structure, which can realize simple, fast and reliable replacement of the grinding pad. At the same time, the grinding pad does not need to be replaced with the help of an additional wrench tool, and the replacement efficiency is high.

[0005] The present application provides a grinding disc connection structure for a grinding machine, comprising:

[0006] A power assembly, wherein the power assembly provides power for the grinding machine;

[0007] A housing assembly, wherein the power assembly is fixed on the housing assembly;

[0008] A base plate assembly, the base plate assembly comprising an air hood, a base plate and a grinding pad;

[0009] The polishing pad is detachably connected to the bottom plate. A hook is provided on the polishing pad, and a through hole is provided on the bottom plate corresponding to the position of the hook on the polishing pad, and the hook passes through the through hole and is engaged with the edge of the through hole.

[0010] The number of through holes is greater than or equal to the number of hooks, and the hooks are evenly and / or symmetrically distributed on the polishing pad. The hooks on the polishing pad are integrally formed with the polishing pad, and the hooks are provided with claws, which are engaged with the edges of the through holes.

[0011] A button is arranged on the wind shield, and a protrusion is arranged on the button; the protrusion pushes the hook to deform, so that the claw on the hook is separated from the edge of the through hole of the bottom plate, and the grinding pad is separated from the bottom plate. A cavity for accommodating the button is arranged on the wind shield, and a movable hole is arranged in the cavity. A stud is arranged on the button, and the stud passes through the movable hole, and the movable hole diameter is larger than the outer diameter of the stud. An elastic member is arranged on the stud, and the elastic member is located in the cavity, and the elastic member applies a force to make the button away from the wind shield. The number of protrusions is equal to the number of hooks, and the hooks correspond to the protrusions.

[0012] The technical solution mainly realizes simple and fast replacement of the grinding pad with reliable connection through a quick-change structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a grinding machine disclosed in an embodiment of the present application;

[0014] Figure 2 yes Figure 1 Schematic cross-section;

[0015] Figure 3 It is an axonometric diagram of the housing;

[0016] Figure 4 is a three-dimensional schematic diagram of the cover;

[0017] Figure 5 It is a three-dimensional schematic diagram of a sanding pad;

[0018] Figure 6 is a schematic side view of a sanding pad;

[0019] Figure 7 It is a three-dimensional schematic diagram of the base plate;

[0020] Figure 8 It is a schematic diagram of the positional relationship between the cover and the grinding pad;

[0021] Fig. 9 yes Figure 8 Axonometric diagram of

[0022] Fig.10 It is a schematic diagram of the button structure;

[0023] Fig.11 It is the axonometric diagram of the button structure;

[0024] Fig.12 is a schematic diagram of the bottom plate assembly structure;

[0025] Description of reference numerals:

[0026] 1-shell assembly; 2-wind hood; 21-wind hood shell; 22-cavity; 23-movable hole; 24-connecting edge; 25-middle hole; 26-air outlet; 27-connecting column; 3-bottom plate; 31-through hole; 32-support connecting seat; 33-output through hole; 34-dust outlet arc; 4-polishing pad; 41-dustproof fence; 42-hook; 43-claw; 5-power assembly; 6-button; 61-stud; 62-protrusion; 7-elastic member; 8-screw; 9-support component. DETAILED DESCRIPTION

[0027] Example

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0029] In the following, in combination with the accompanying drawings, a grinding machine grinding disc connection structure provided by an embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0030] refer to Figure 1-12 , a grinding machine grinding disc connection structure provided in an embodiment of the present application may include:

[0031] At least one power assembly 5, the power assembly 5 provides power for the grinder; the power assembly 5 is a combination of a motor and a reducer assembly, the power assembly 5 is fixed in the housing assembly 1, and the housing assembly 1 is the outer shell of the grinder. Figure 1 and 2 As shown, the housing assembly 1 encloses the power assembly 5 so that the power assembly 5 can output power stably. A circuit board and a switch are also provided in the housing assembly 1 to provide stable power so that the power assembly 5 can output power stably.

[0032] like Figure 2-Figure 4 As shown, the bottom plate assembly is connected to the output of the power assembly 5, and the wind shield 2, the support component 9, the bottom plate 3 and the grinding pad 4 form the bottom plate assembly in order; the bottom plate 3 is located between the wind shield 2 and the grinding pad 4; the wind shield 2 and the bottom plate 3 are connected through the support component 9, and the wind shield 2 and the bottom plate 3 are respectively connected to the support component 9 through screws, and a threaded hole is provided on one end of the support component 9, and the threaded hole corresponds to the connecting column 27, and the other end of the support component 9 is connected to the support connection seat 32 through screws; the support component 9 is an elastic rubber part, and when the support component 9 is located between the wind shield 2 and the bottom plate 3, the wind shield 2 and the bottom plate 3 are flexible due to the elastic support component 9. It is convenient for the bottom plate 3 to vibrate eccentrically.

[0033] like Figure 5-Figure 7 The grinding pad 4 and the base plate 3 are detachably connected, such as Fig.12 The hook 42 on the grinding pad 4 passes through the through hole 31 on the bottom plate 3, and the claw 43 on the hook 42 is clamped at the edge of the through hole 31, so that the grinding pad 4 is connected to the bottom plate 3. The claw 43 corresponds to the through hole 31 one by one. The hooks 42 should be evenly and / or symmetrically distributed on the grinding pad 4. It is convenient for the grinding pad 4 to be connected with the bottom plate 3 with uniform force.

[0034] The number of through holes 31 is greater than or equal to the number of hooks 42 , so that the hooks 42 can be hung on the edges of the through holes 31 ; and the hooks 42 are evenly and / or symmetrically distributed on the polishing pad 4 .

[0035] The hook 42 on the polishing pad 4 is formed integrally with the polishing pad 4 . A claw 43 is provided on the hook 42 . The claw 43 is engaged with the edge of the through hole 31 .

[0036] like Fig.10 and Fig.11 , and also includes a button 6 arranged on the wind cover 2, and a protrusion 62 is provided on the button 6; the protrusion 62 pushes the hook 42 to deform, so that the claw 43 on the hook 42 is separated from the edge of the through hole 31 of the base plate 3, and at this time, the grinding pad 4 is separated from the base plate 3.

[0037] The air shield 2 is provided with a cavity 22 for accommodating the button 6, and a movable hole 23 is provided in the cavity 22. The button 6 is provided with a stud 61, which passes through the movable hole 23, and the diameter of the movable hole 23 is larger than the outer diameter of the stud 61, so that the stud 61 can move in the movable hole 23. The number of protrusions 62 is equal to the number of hooks 42, and the hooks 42 correspond to the protrusions 62; the protrusions 62 can push the hooks 42 away.

[0038] The stud 61 is sleeved with an elastic member 7, such as Figure 8 and Fig. 9 As shown, the elastic member 7 is located in the cavity 22, one end of the elastic member 7 presses against the button 6, and the other end presses against the inner wall of the cavity 22. The elastic member 7 is compressed, so that the button 6 tends to move away from the wind shield 2, so that the button 6 pushes the hook 42 open and returns to its original position after being pressed. This makes it easy to replace the grinding pad 4, especially the replacement between the triangular grinding pad 4 and the quadrilateral grinding pad 4. This method is simple and fast, and the connection is reliable.

[0039] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A grinding disc connection structure for a grinding machine, characterized in that: include: A power assembly, wherein the power assembly provides power for the grinding machine; A housing assembly, wherein the power assembly is fixed on the housing assembly; A base plate assembly, the base plate assembly comprising an air hood, a base plate and a grinding pad; The grinding pad is detachably connected to the base plate.

2. A grinding machine grinding disc connection structure according to claim 1, characterized in that: The polishing pad is provided with a hook, and a through hole is provided on the bottom plate corresponding to the position of the hook on the polishing pad, and the hook passes through the through hole and is engaged with the edge of the through hole.

3. A grinding machine grinding disc connection structure according to claim 2, characterized in that: The number of the through holes is greater than or equal to the number of the hooks, and the hooks are evenly and / or symmetrically distributed on the polishing pad.

4. A grinding machine grinding disc connection structure according to claim 3, characterized in that: The hook on the polishing pad is integrally formed with the polishing pad, and a clamping claw is arranged on the hook, and the clamping claw is clamped on the edge of the through hole.

5. A grinding machine grinding disc connection structure according to claim 4, characterized in that: It also includes a button arranged on the wind cover, wherein the button is provided with a protrusion; the protrusion pushes the hook to deform, so that the claw on the hook is separated from the edge of the through hole of the bottom plate, and the grinding pad is separated from the bottom plate.

6. A grinding machine grinding disc connection structure according to claim 5, characterized in that: The wind shield is provided with a cavity for accommodating a button, a movable hole is provided in the cavity, a stud is provided on the button, the stud passes through the movable hole, and the diameter of the movable hole is larger than the outer diameter of the stud.

7. A grinding machine grinding disc connection structure according to claim 6, characterized in that: An elastic member is arranged on the stud, the elastic member is located in the cavity, and the elastic member applies a force to make the button stay away from the wind shield.

8. The grinding disc connection structure of a grinding machine according to claim 5, characterized in that: The number of the protrusions is equal to the number of the hooks, and the hooks correspond to the protrusions.

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