Polishing machine with polishing head convenient to replace

Abstract

The utility model relates to the field of grinding machines, and discloses a grinding machine with a grinding head convenient to replace, which comprises a grinding machine body, a fixing sleeve and a grinding disc, a driving motor is fixedly connected in one side of the grinding machine body, a motor shaft is arranged at the driving end of the driving motor, a bolt hole is formed in the motor shaft, and a bolt is arranged in the bolt hole. And plug pin blocks are fixedly connected to the two sides of the bottom of the motor shaft correspondingly, plug pin columns are inserted into the plug pin holes, a fixing base is fixedly connected to the bottom ends of the plug pin columns, a grinding disc is fixedly connected to the bottom end of the fixing base, and the motor shaft is sleeved with a fixing sleeve. According to the polishing machine, the U-shaped frame, the motor shaft, the fixing sleeve and the bolt rod are arranged, when the polishing head needs to be replaced, the U-shaped frame rotates to be separated from the third through hole, at the moment, the bolt rod is pulled out to be separated from the first through hole and the second through hole, and after separation, the motor shaft at the bottom end of the polishing machine body can be separated from the fixing sleeve.

Description

Technical Field

[0001] The utility model relates to the field of grinders, in particular to a grinder with a grinding head that is convenient to replace. Background Art

[0002] The full name of electric grinder is reciprocating electric polishing grinder (also known as filing grinder), which is widely used in finishing and surface polishing in the mold industry. It is a substitute for similar pneumatic products.

[0003] The grinder in the prior art needs to be disassembled and replaced according to different grinding heads when in use. The sandpaper density corresponding to the grinding head is different, and the grinding smoothness will be relatively different. However, traditional grinding heads are fastened with bolts and other structures. When disassembling, they need to be disassembled and replaced with a special wrench, which is inconvenient during use and cannot be replaced quickly and conveniently. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a grinding machine which is convenient for replacing the grinding head. The U-shaped frame is rotated to disengage from the third through hole. At this time, the latch rod can be pulled out to disengage from the first through hole and the second through hole. After disengagement, the motor shaft at the bottom end of the grinding machine body can be disassembled from the fixed sleeve. Through this structure, the grinding head and the grinding machine body can be quickly disassembled and installed and fixed.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grinding machine for convenient replacement of grinding heads, comprising a grinding body, a fixed sleeve and a grinding disc, a driving motor is fixedly connected to the inside of one side of the grinding body, a motor shaft is arranged at the driving end of the driving motor, a latch hole is opened inside the motor shaft, latch blocks are fixedly connected to both sides of the bottom of the motor shaft, a latch column is inserted into the latch hole, a fixing seat is fixedly connected to the bottom end of the latch column, a grinding disc is fixedly connected to the bottom end of the fixing seat, a fixed sleeve is sleeved on the outside of the motor shaft, a first through hole and a second through hole are respectively opened inside the fixing sleeve, the motor shaft and the latch column, a latch rod passes through the inside of the first through hole and the second through hole.

[0006] Through the above technical solution, the grinding disc and the grinding body can be quickly disassembled and installed, which improves the convenience of operation and increases efficiency.

[0007] Furthermore, a threaded hole is provided on one side of the grinding machine body, and a hand-held rod is connected to the inner thread of the threaded hole;

[0008] Through the above technical solution, the grinding machine body can be held by the hand-held rod, thereby improving the stability during the grinding process.

[0009] Furthermore, a handle is fixedly connected to the middle of one end of the outer side of the grinding machine body, and both ends of the handle are fixedly connected to anti-fall-off auxiliary blocks;

[0010] Through the above technical solution, the handle is convenient for holding, and the anti-dropping auxiliary block is added to increase the anti-dropping effect, thereby ensuring safe use.

[0011] Furthermore, a rubber sheath is fixedly connected to the outside of the latch rod, a third through hole is opened at one end of the latch rod, and a U-shaped frame is passed through the inside of the third through hole;

[0012] Through the above technical solution, the U-shaped frame structure is not prone to falling off and can achieve a quick assembly effect.

[0013] Furthermore, the bottom end of the grinding disc is fixed with grinding sandpaper by Velcro;

[0014] Through the above technical solution, the surface of an object can be polished to achieve smoothness by using sandpaper.

[0015] Furthermore, both sides of the exterior of the grinding machine body are fixedly connected with heat dissipation nets;

[0016] Through the above technical solution, internal heat dissipation is provided through the heat dissipation network.

[0017] Furthermore, both sides of the upper surface of the fixing seat are respectively fixedly connected with a limit block and provided with a latch slot, and the latch slot and the latch block are plugged and matched;

[0018] Through the above technical solution, the assembly of structures such as the latch block and the latch slot is more secure and can stably improve the rotation effect.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model proposes a grinding machine which is convenient for replacing a grinding head. The grinding head is provided with a U-shaped frame, a motor shaft, a fixed sleeve and a latch rod. When the grinding head needs to be replaced, the U-shaped frame can be rotated to disengage from the third through hole. At this time, the latch rod can be pulled out to disengage from the first through hole and the second through hole. After disengagement, the motor shaft at the bottom end of the grinding body can be separated from the fixed sleeve. Through this structure, the grinding head and the grinding body can be quickly separated, which is fast and convenient to operate.

[0021] 2. The utility model proposes a grinding machine which is convenient for replacing the grinding head. The fixed seat at the top of the replaced grinding disc is again plugged into and matched with the motor shaft by providing a fixed seat, a motor shaft, a latch rod and a latch column. The latch column is inserted into the interior behind the motor shaft to play a limiting role. Then the latch rod passes through the first through hole and the second through hole, and is fixed again by rotating the U-shaped frame. The installation operation of the fixed sleeve and the grinding body is completed to fix it. The installation effect is improved by this structure, and the grinding head can be quickly and conveniently replaced through the beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0023] Figure 2 This is a disassembled structural diagram of the grinding machine body and the grinding disc of the utility model;

[0024] Figure 3 For this utility model Figure 2 A in the enlarged view;

[0025] Figure 4 This is an enlarged view of the grinding disc structure of the utility model.

[0026] Legend:

[0027] 1. Grinding body; 101. Handle; 102. Heat dissipation net; 103. Hand-held rod; 104. Threaded hole; 2. Fixed sleeve; 201. Fixed seat; 202. Limit block; 203. Latch column; 204. Latch slot; 205. First through hole; 3. Grinding disc; 4. Motor shaft; 401. Latch block; 402. Second through hole; 5. Latch rod; 501. Rubber holster; 6. U-shaped frame; 7. Grinding sandpaper. DETAILED DESCRIPTION

[0028] 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.

[0029] Example

[0030] Reference Figure 1-4The utility model provides an embodiment: a grinding machine for conveniently replacing a grinding head, comprising a grinding body 1, a fixed sleeve 2 and a grinding disc 3. A driving motor is fixedly connected to one side of the grinding body 1. The motor drives the fixed seat 201 and the grinding disc 3 to rotate through the motor shaft 4. After the rotation, the surface of the object to be polished is polished by the grinding sandpaper 7.

[0031] The driving end of the driving motor is provided with a motor shaft 4, which is connected to the fixing seat 201 through the motor shaft 4, and can drive the fixing seat 201 to rotate;

[0032] A latch hole is provided inside the motor shaft 4, and latch blocks 401 are fixedly connected to both sides of the bottom of the motor shaft 4. A latch column 203 is inserted into the latch hole, and the latch column 203 is inserted into the inside of the motor shaft 4 to play a role of limiting and connecting;

[0033] The bottom end of the latch column 203 is fixedly connected to the fixing seat 201, and the bottom end of the fixing seat 201 is fixedly connected to the grinding disc 3;

[0034] The motor shaft 4 is sleeved with a fixed sleeve 2, and the fixed sleeve 2, the motor shaft 4 and the latch column 203 are respectively provided with a first through hole 205 and a second through hole 402. The first through hole 205 and the second through hole 402 are penetrated by a latch rod 5. The latch rod 5 is passed through the first through hole 205 and the second through hole 402, and is fixed again by the rotation of the U-shaped frame 6, so that it can be installed on the fixed sleeve 2 and the grinding machine body 1;

[0035] The outside of the latch rod 5 is fixedly connected with a rubber cover 501, which increases the sealing performance and prevents the gap from causing shaking.

[0036] A third through hole is formed at one end of the latch rod 5, and a U-shaped frame 6 is passed through the interior of the third through hole. The U-shaped frame 6 is rotated to disengage from the third through hole, and the latch rod 5 can be disengaged from the first through hole 205 and the second through hole 402. After disengagement, the motor shaft 4 at the bottom end of the grinding body 1 can be separated from the fixed sleeve 2;

[0037] The upper surface of the fixing seat 201 has the limiting block 202 fixedly connected to both sides thereof and is provided with a latching slot 204 , and the latching slot 204 is plugged and matched with the latching block 401 .

[0038] A threaded hole 104 is provided on one side of the grinding machine body 1, and the handle 103 can be installed and removed through the threaded hole 104 structure and used according to different needs;

[0039] The inner thread of the threaded hole 104 is connected with a hand-held rod 103, and the middle of the outer end of the grinding machine body 1 is fixedly connected with a handle 101. By holding the handle 101, the grinding machine body 1 is started;

[0040] Both ends of the handle 101 are fixedly connected with anti-drop auxiliary blocks, the bottom end of the grinding disc 3 is fixed with grinding sandpaper 7 by Velcro, and both sides of the outside of the grinding body 1 are fixedly connected with heat dissipation nets 102.

[0041] Working principle: when in use, first hold the handle 101, then start the grinding body 1, drive the internal motor, and drive the fixed seat 201 and the grinding disc 3 to rotate through the motor shaft 4. After rotation, the surface of the object to be polished is polished by the grinding sandpaper 7. When the grinding disc 3 needs to be replaced during the grinding process, it can be rotated out of the third through hole through the U-shaped frame 6. At this time, the latch rod 5 can be disengaged from the first through hole 205 and the second through hole 402. After disengagement, the motor shaft 4 at the bottom end of the grinding body 1 can be disassembled from the fixed sleeve 2, and then the latch column 203, the latch groove 204 and the limit block 202 and other structures are all disengaged from the bottom end of the motor shaft 4, and the fixed seat 201 at the top of the replaced grinding disc 3 is again plugged into the motor shaft 4, and then the latch rod 5 passes through the first through hole 205 and the second through hole 402, and is fixed again by the rotation of the U-shaped frame 6, so that it can be installed on the fixed sleeve 2 and the grinding body 1 to complete the replacement.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding machine for conveniently replacing a grinding head, comprising a grinding machine body (1), a fixed sleeve (2) and a grinding disc (3), characterized in that: A driving motor is fixedly connected to the inside of one side of the grinding machine body (1), a motor shaft (4) is provided at the driving end of the driving motor, a latch hole is provided inside the motor shaft (4), latch blocks (401) are fixedly connected to both sides of the bottom of the motor shaft (4), a latch column (203) is inserted into the inside of the latch hole, a fixing seat (201) is fixedly connected to the bottom end of the latch column (203), a grinding disc (3) is fixedly connected to the bottom end of the fixing seat (201), a fixing sleeve (2) is sleeved on the outside of the motor shaft (4), a first through hole (205) and a second through hole (402) are respectively provided inside the fixing sleeve (2), the motor shaft (4) and the latch column (203), and a latch rod (5) passes through the inside of the first through hole (205) and the second through hole (402).

2. A grinding machine with convenient grinding head replacement according to claim 1, characterized in that: A threaded hole (104) is provided on one side of the grinding machine body (1), and a hand-held rod (103) is threadedly connected to the inner part of the threaded hole (104).

3. A grinding machine with convenient grinding head replacement according to claim 1, characterized in that: A handle (101) is fixedly connected to the middle of one end of the outer side of the grinding machine body (1), and both ends of the handle (101) are fixedly connected to anti-fall-off auxiliary blocks.

4. A grinding machine for conveniently replacing a grinding head according to claim 1, characterized in that: The outside of the latch rod (5) is fixedly connected to a rubber sheath (501), one end of the latch rod (5) is provided with a third through hole, and the inside of the third through hole is penetrated by a U-shaped frame (6).

5. A grinding machine with convenient grinding head replacement according to claim 1, characterized in that: The bottom end of the grinding disc (3) is fixed with grinding sandpaper (7) by Velcro.

6. A grinding machine with convenient grinding head replacement according to claim 1, characterized in that: Both sides of the exterior of the grinding machine body (1) are fixedly connected with heat dissipation nets (102).

7. A grinding machine for conveniently replacing a grinding head according to claim 1, characterized in that: The upper surface of the fixing seat (201) is respectively fixedly connected to a limiting block (202) and is provided with a latching slot (204), and the latching slot (204) and the latching block (401) are plugged and matched.

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