A glass grinding head motor with a brand-new protection structure

Abstract

The present invention relates to a glass grinding head motor with a brand-new protection structure, which includes a housing, an iron core located inside the housing, and a rotor supported by a motor rotating shaft inside the iron core. The front end of the housing is connected to a front end cover. The front end of the motor rotating shaft passes through the front end cover and is fixed with a grinding wheel base. A protection gap is provided between the mating surfaces of the front end cover and the grinding wheel base. An end face step is provided on the outer edge of the front end face of the front end cover, and a protection ring is fixedly arranged inside the end face step. The rear part of the outer ring of the protection ring is an inclined conical water blocking surface, and the front part is a horizontal plane. The inner ring of the protection ring is a horizontal plane, and the front end face of the protection ring is a vertical plane. Moreover, a notch is provided at the bottom of the protection ring, and the notch is located on the front end face of the protection ring. After adopting the above structure, the rapid dripping and rapid throwing out of the mixed liquid are realized. At the same time, when precipitated solidified substances such as glass powder appear in the protection gap, the notch can serve as a temporary storage space, making it difficult for the motor to get stuck in a short time.

Description

Technical Field

[0001] The present invention relates to the field of grinding head motors, and particularly to a glass grinding head motor with a brand-new protection structure. Background Art

[0002] Grinding head motors are mainly applied in the glass deep processing industry for grinding the edges of glass. Due to the special requirements of the operating conditions and performance, higher requirements are imposed on the service life and accuracy of the grinding head motors. The effect of the waterproof and dustproof functions of the grinding head motors is directly related to the service life and accuracy of the grinding head motors. However, it is obviously very difficult to maintain stable operation with high accuracy and ensure a long service life under such conditions of high temperature, high humidity, high dust, and high load. These difficulties mainly come from the mechanical part of the motor, especially the protection structure at the mating surface between the motor grinding wheel seat and the front end cover is scientific, reasonable, and effective.

[0003] In the Chinese utility model patent specification CN210490607U, a horizontal edge grinding head motor is disclosed. An end face step is provided at the outer edge of the front end face of the front end cover of this grinding head motor. A stainless steel connecting piece is fixedly arranged inside the end face step. The outer ring of the stainless steel connecting piece is designed into two parts. The rear part is an inclined conical water blocking surface that is wider at the front and narrower at the rear, and the front part is a horizontal plane. The inner ring of the stainless steel connecting piece is a horizontal plane, and the front end face of the stainless steel connecting piece is a vertical plane. A waterproof gap is provided at the mating surface between the grinding wheel seat and the front end cover. From the outside to the inside in the radial direction of the waterproof gap, a first vertical gap, a drainage groove, a first horizontal gap, a second vertical gap, a second horizontal gap, a third vertical gap, a third horizontal gap, and a fourth vertical gap are successively provided.

[0004] In the above-mentioned utility model patent structure, although a structure combining a drainage gap and the inclined conical water blocking surface of the stainless steel connecting piece is adopted, to a certain extent, the water entering the waterproof gap can be discharged in time. However, considering the characteristics of the mixed liquid of water and glass powder in the glass grinding environment and the defects of the above waterproof structure, the mixed liquid entering the waterproof gap can only flow to the bottom end of the stainless steel connecting piece before it can break away from the stainless steel connecting piece and drip onto the grinding wheel seat and then be thrown out. The outflow speed of the mixed liquid is too slow, and the mixed solution is easy to precipitate, solidify, and accumulate on one side of the front end face of the front end cover. Since the front end cover is generally made of iron material, the mixed liquid will corrode and damage it, and then enter the motor interior, causing the motor to get stuck during startup. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a glass grinding head motor with a brand-new protection structure and more suitable for the special environment of glass processing.

[0006] To solve the above technical problems, the special protection structure of the present invention includes a housing, a stator core with windings located inside the housing, and a rotor supported by a motor shaft inside the stator core. A front end cover is connected to the front end of the housing. The front end of the motor shaft passes through the front end cover and is fixed with a grinding wheel seat. There is a protection gap between the front end face of the front end cover and the rear end face of the grinding wheel seat. An end face step is provided on the outer edge of the front end face of the front end cover, and a protection ring is fixedly arranged inside the end face step. The outer ring of the protection ring is designed in two parts. The rear part is an inclined conical water blocking surface, and the vertical height of the inclined conical water blocking surface gradually decreases from front to back. The front part is a horizontal plane. The inner ring of the protection ring is a horizontal plane, and the front end face of the protection ring is a vertical plane. And a notch is provided at the bottom of the protection ring, and the notch is located on the front end face of the protection ring. After adopting the above structure, the mixed liquid entering the protection gap can flow downwards and then break away from the protection ring and drip onto the grinding wheel seat and be thrown out when reaching the notch, realizing the rapid dripping and rapid throwing out of the mixed liquid. At the same time, when sediment and solidified substances such as glass powder appear in the protection gap, the notch can serve as a temporary storage space, making it not easy for the motor to be stuck in a short time.

[0007] As an improvement of the present invention, the shape of the notch is rectangular and the axial depth of the notch gradually increases from bottom to top. After adopting such a structure, since the notch surface is an inclined surface that is deeper at the top and shallower at the bottom, the mixed liquid flowing into the notch can flow onto the grinding wheel seat at a faster speed, and at the same time, the contact area between the mixed liquid and the front end cover becomes smaller and the contact time becomes shorter, avoiding the precipitation and solidification of the mixed liquid on one side of the front end face of the front end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is the overall structure diagram of the present invention;

[0009] Figure 2 is Figure 1 the enlarged view of part Ⅰ of

[0010] Figure 3 is the sectional view of the protection ring structure of the present invention;

[0011] Figure 4 is the cross-sectional view of the protection ring structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] By Figures 1 to 4It can be seen that the glass grinding head motor of the present invention mainly includes a housing 1, a wound stator core 2 disposed within the housing 1, and a rotor 4 supported by a motor shaft 3 within the stator core 2. The front and rear ends of the housing 1 are connected to a front end cover 8 and a rear end cover 5 respectively. The front end and rear end of the motor shaft 3 pass through the front end cover 8 and the rear end cover 5 respectively, and a grinding wheel base 10 and a fan 6 are fixed respectively. A wind shield 7 covering the fan 6 is also fixed on the rear end cover 5. An end face step 9 is provided at the outer edge of the front end face of the front end cover 8, and a protective ring 12 is fixedly arranged within the end face step 9. The protective ring 12 is fixed to the end face step 9 by three socket head cap screws 13. There is a protective gap 11 between the opposite end faces of the grinding wheel base 10 and the front end cover 8.

[0013] The protective gap 11 is provided with a first vertical gap 110, a drainage groove 111, a first horizontal gap 112, a second vertical gap 113, a second horizontal gap 114, a third vertical gap 115, a third horizontal gap 116, and a fourth vertical gap 117 in sequence from outside to inside in the radial direction. The outer ring of the protective ring 12 is designed in two parts. The rear part is an inclined conical water blocking surface 120, and the vertical height of the inclined conical water blocking surface 120 gradually decreases from front to back. The front part is a horizontal plane. The inner ring of the protective ring 12 is a horizontal plane, and the front end face is a vertical plane. Moreover, its inclined conical water blocking surface 120 forms the inner ring wall of the drainage groove 111. The outer ring wall of the drainage groove 111 is an inclined conical drainage slope with a vertical height gradually increasing from front to back. The special structure of the drainage groove 111 can block the water and glass powder entering the front end cover 8 from the first vertical gap 110 within the drainage groove 111. During the rotation of the motor, the water and glass powder will drip along the drainage groove 111 from the first vertical gap 110 at the lowest end of the motor to the outer ring wall of the drainage groove 111 and then be thrown out. The outer ring horizontal plane, the front end face, and the inner ring horizontal plane of the protective ring 12 cooperate with the grinding wheel base 10 to form the first horizontal gap 112, the second vertical gap 113, and the second horizontal gap 114 respectively. The first vertical gap 110, the third vertical gap 115, the third horizontal gap 116, and the fourth vertical gap 117 are formed by the cooperation of the front end cover 8 and the grinding wheel base 10.

[0014] A rectangular notch is opened at the bottom of the front end face of the protective ring 12, and the axial depth of the notch gradually increases from bottom to top.

[0015] During operation, the grinding wheel base 10 rotates at a high speed. The water splashing onto the outer cylindrical surface of the grinding wheel base 10 cannot stay on it because of the huge centrifugal force generated by the high-speed rotation, which easily throws it out. However, due to the high water pressure and fast flow rate of the water column used during operation, the amount of splashed water is large, and inevitably, a part of the mixed liquid of water and glass dust will flow into the protective gap 11 between the grinding wheel base 10 and the front end cover 8. Under the structural action of the combination of the drainage groove 111 and the inclined conical water-retaining surface 121 of the protective ring 12, the mixed solution can be prevented from flowing into the motor interior. At the same time, under the action of the notch 122 of the protective ring 12, the mixed liquid entering the protective gap 11 can flow downwards to the notch 122 and then break away from the protective ring 12 and drip onto the slope on the grinding wheel base 10 and be thrown out, achieving the rapid dripping and rapid throwing out of the mixed liquid. At the same time, the notch 122 has an inclined surface with a deeper upper part and a shallower lower part on the outer surface. While further accelerating the dripping speed of the mixed liquid, it also reduces the contact area and contact time between the mixed liquid and the front end cover 8, avoiding the precipitation and solidification of the mixed liquid on one side of the front end cover 8, playing a role in protecting the front end cover and preventing the motor from jamming during startup.

Claims

1. A glass grinding head motor with a brand-new protection structure, comprising a housing, a wound stator core located within the housing, and a rotor supported by a motor shaft within the stator core. A front end cover is connected to the front end of the housing. The front end of the motor shaft passes through the front end cover and is fixed with a grinding wheel base. A protection gap is provided between the front end face of the front end cover and the rear end face of the grinding wheel base. An end face step is provided at the outer edge of the front end face of the front end cover, and a protection ring is fixedly arranged within the end face step. The outer ring of the protection ring is designed in two parts. The rear part is an inclined conical water-retaining surface, and the vertical height of the inclined conical water-retaining surface gradually decreases from front to back. The front part is a horizontal plane. The inner ring of the protection ring is a horizontal plane, and the front end face of the protection ring is a vertical plane. It is characterized in that, A notch is provided at the bottom of the protective ring. The notch is located on the front end face of the protective ring. When the grinding wheel base rotates at a high speed, the mixed liquid that enters the protective gap flows downward to the notch to break away from the protective ring and drops onto the grinding wheel base and is then thrown out.

2. The glass grinding head motor with the novel protection structure according to claim 1, characterized in that, The cross-sectional shape of the notch is rectangular, and the axial depth of the notch gradually increases from bottom to top.

3. The glass grinding head motor with the novel protection structure according to claim 1, wherein, A first vertical gap, a drainage groove, a first horizontal gap, a second vertical gap, a second horizontal gap, a third vertical gap, a third horizontal gap, and a fourth vertical gap are sequentially provided in the protective gap from outside to inside in the radial direction; the inclined conical water blocking surface and the rear end face of the grinding wheel base respectively form the inner ring wall and the outer ring wall of the drainage groove, and the outer ring horizontal plane, the front end face, and the inner ring horizontal plane of the protective ring respectively cooperate with the grinding wheel base to form the first horizontal gap, the second vertical gap, and the second horizontal gap. The first vertical gap, the third vertical gap, the third horizontal gap, and the fourth vertical gap are formed by the cooperation of the front end cover and the grinding wheel base.

4. The glass grinding head motor with the new protection structure according to claim 3, characterized in that, The outer ring wall of the drainage groove is an inclined conical drainage slope, and the vertical height of the drainage slope gradually increases from front to back.

5. The glass grinding head motor with the novel protection structure according to claim 1, characterized in that, The protective ring is fixed to the front end face of the front end cover by three inner hexagon screws.

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