CN112123200A - Waterproof dustproof motor spindle polishing head - Google Patents

Abstract

The invention discloses a waterproof and dustproof motor spindle polishing head, which relates to the field of polishing equipment and comprises a waterproof cover arranged on a base, wherein the lower end of the waterproof cover is connected with a motor, a locking axis is arranged on an output shaft of the motor, a connecting cavity is arranged in the waterproof cover, a connecting shaft in threaded connection with the locking axis is arranged in the connecting cavity, a connecting part is arranged on the connecting shaft, a polishing tray is connected to the upper end face of the connecting part, a threaded shaft is fixedly arranged in the middle of the lower end face of the polishing tray, a threaded hole corresponding to the connecting shaft is formed in the middle of the connecting part, a polishing piece is arranged on the polishing tray, the axis of the connecting shaft is in line or parallel to the axis of the polishing tray, a pneumatic connector communicated with the connecting cavity is connected. Can effectively prevent the chips generated by polishing water and dust from permeating into the polishing head, and prolong the service life of the polishing head.

Description

A waterproof and dustproof motor spindle grinding head

technical field

The invention relates to the field of polishing equipment, in particular to a waterproof and dustproof motor spindle grinding head.

Background technique

Polishers, also known as grinders, are often used for mechanical grinding, polishing, and waxing. Its working principle is: use a pneumatic sandpaper machine to drive the sponge or wool polishing disc to rotate at a high speed. Because the polishing disc and the polishing agent work together and rub against the surface to be polished, the purpose of removing paint pollution, oxide layer and shallow marks can be achieved.

In the prior art, the robot grabs the product and grinds it on the grinding head, and the dust generated in the grinding process and the chip liquid used in grinding easily penetrate into the machine base of the grinding head from the connection between the grinding head and the worktable, and the grinding process is improved. The long-term working of the head in harsh environments will easily affect the polishing accuracy of the grinding head and affect the service life of the grinding head.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a waterproof and dustproof motor spindle grinding head to solve the problems raised in the above background art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: a waterproof and dustproof motor spindle grinding head, comprising a waterproof cover arranged on the machine base, the lower end of the waterproof cover is detachably connected with a motor, and the output shaft of the motor is connected to the motor. A locking shaft is detachably provided, the locking shaft is provided with an external thread, the waterproof cover is provided with a connecting cavity, the connecting cavity is provided with a connecting shaft, and the lower end of the connecting shaft is provided with a lock The inner thread groove matched with the outer thread on the tightening shaft, the connecting shaft is provided with a connecting part, the upper end surface of the connecting part is detachably connected with a grinding tray, and the middle part of the lower end surface of the grinding tray is fixed with a threaded shaft, The middle of the connecting part is provided with a threaded hole corresponding to the connecting shaft, the grinding plate is detachably provided with a grinding plate, the axis of the connecting shaft and the axis of the grinding tray are collinear or parallel to each other, and the connecting cavity is In the shape of an annular step with a diameter gradually increasing from top to bottom, the side surface of the waterproof cover is connected with a pneumatic joint communicating with the connecting cavity, and the inner wall of the connecting cavity is embedded with a motor sealing ring abutting against the upper end surface of the motor. Air is blown into the connection cavity inside the waterproof cover through the pneumatic joint, and the lower end face of the waterproof cover is sealed, so that the gas inside the waterproof cover is blown out toward the grinding tray, so as to prevent dust and water from entering the waterproof cover from the upper end of the waterproof cover.

Further, a sealing groove is formed on the lower end surface of the waterproof cover around the support table, and a lower sealing ring is arranged in the sealing groove, and the lower sealing ring is any one of an oval sealing ring, a special-shaped sealing ring, and a circular sealing ring. One is that a support table is protruded from the middle of the lower end face of the waterproof cover. The support table is used to support the waterproof cover, the lower end surface of the waterproof cover is sealed to improve the air tightness of the lower end of the waterproof cover, and the lower sealing ring is installed on the lower end surface of the waterproof cover to improve the waterproof ability of the lower surface of the waterproof cover.

Further, the output shaft of the motor and the locking shaft are connected by locking screws, the output shaft of the motor is provided with a mounting hole, and the mounting hole is provided with an internal thread corresponding to the locking screw, so The locking shaft is provided with a through hole through which the locking screw penetrates. The motor and the locking shaft are connected by locking screws, and the locking shaft is easy to disassemble.

Further, the upper end of the waterproof cover is detachably provided with a cover plate through an end cover screw, and the cover plate is in the form of a circular annular plate body. Block water and flying debris by installing a cover over the waterproof cover.

Further, the diameter of the locking shaft is gradually reduced from top to bottom. The locking shaft is large at the top and small at the bottom, which is convenient to observe the connection position of the locking shaft and the connecting shaft during installation.

Further, a gasket is sandwiched between the connecting shaft and the locking shaft, and the gasket includes a circular-shaped body coaxially arranged with the grinding tray. Install a gasket on the upper end face of the locking shaft, and the surface locking shaft tells other components to be hit when rotating.

Further, when the axis of the connecting shaft and the axis of the grinding tray are parallel to each other, the connecting shaft is eccentrically provided with an eccentric groove that gradually decreases from top to bottom, and the connecting portion is sleeved in the eccentric groove through a bearing, The upper end of the connecting portion is provided with a shoulder abutting against the bearing, the washer further includes an arc-shaped pad disposed on the outer side wall of the annular body, the upper end surface of the annular body is in contact with the bearing, and the arc-shaped The upper surface of the pad abuts against the connecting shaft, and the lower surface of the arc-shaped pad abuts against the locking shaft. The motor drives the locking shaft to rotate, and the locking shaft drives the connecting shaft to rotate. When the connecting shaft rotates, the bearing and the connecting part in the eccentric groove rotate eccentrically around the axis of the connecting shaft, and the eccentric rotation of the connecting part makes the grinding tray on the connecting part eccentric. rotate.

Further, the upper end of the side wall of the connecting portion is provided with a horizontal plate body, the lower surface of the water sheet plate body is provided with a positioning ring, and the upper end surface of the connecting shaft is provided with a positioning groove corresponding to the positioning ring. The locating ring and the locating groove cooperate to locate the connecting part, so that the connecting part can be quickly installed into the bearing in the eccentric groove.

Further, when the axis of the connecting shaft and the axis of the grinding tray are collinear, the connecting portion is integrally connected with the connecting shaft, and the upper end surface of the annular body is in abutment with the connecting shaft. The motor drives the locking shaft to rotate, and the locking shaft drives the connecting shaft to rotate. When the connecting shaft rotates, the connecting part rotates with the connecting shaft, so that the grinding tray on the connecting part rotates.

Further, the lower surface of the grinding tray is provided with a positioning block, and the positioning block is provided with a slot for embedding the upper end of the connecting portion. The positioning block locates the position of the connecting part at the upper end of the connecting shaft, so as to facilitate the alignment of the threaded shaft and the threaded hole.

The beneficial effects of the invention are as follows: the debris generated by polishing water and dust polishing can be effectively prevented from penetrating into the interior of the grinding head, and the service life of the grinding head can be prolonged.

Description of drawings

The accompanying drawings further illustrate the present invention, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

1 is a schematic structural diagram of a waterproof and dustproof motor spindle grinding head provided by an embodiment of the present invention;

Fig. 2 is the structural representation of the waterproof and dustproof motor spindle grinding head provided by Fig. 1;

Fig. 3 is a partial enlarged view in Fig. 1;

4 is a schematic structural diagram of a waterproof and dustproof motor spindle grinding head provided by an embodiment of the present invention;

5 is a schematic structural diagram of the waterproof and dust-proof motor spindle grinding head provided in FIG. 4;

6 is a bottom view of a waterproof and dustproof motor spindle grinding head provided by an embodiment of the present invention.

Labels in the figure: waterproof cover 1, motor 2, locking shaft 3, connecting shaft 4, connecting part 5, grinding tray 6, cover plate 7, threaded shaft 8, pneumatic joint 9, gasket 10, lower sealing ring 11, Motor sealing ring 12, bearing 13.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

It should be noted that when an element is referred to as being "fixed to" or "disposed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

In the present invention, unless otherwise stated, the directional words used such as "up, down, left and right" generally refer to up, down, left and right as shown in FIG. 1 . "Inside and outside" means inside and outside on a specific profile. "Far and near" means far and near relative to a component.

Example 1

As shown in FIG. 1 to FIG. 3 , a waterproof and dustproof motor spindle grinding head provided by an embodiment of the present invention includes a waterproof cover 1 arranged on the machine base, and a motor 2 is detachably connected to the lower end of the waterproof cover 1 , the output shaft of the motor 2 is detachably provided with a locking shaft 3, the locking shaft 3 is provided with an external thread, the waterproof cover 1 is provided with a connection cavity, and the connection cavity is provided with The connecting shaft 4, the lower end of the connecting shaft 4 is provided with an internal thread groove that matches the external thread on the locking shaft 3, the connecting shaft 4 is provided with a connecting part 5, and the upper end surface of the connecting part 5 is detachable A grinding tray 6 is connected, a threaded shaft 8 is fixed in the middle of the lower end surface of the grinding tray 6, a threaded hole corresponding to the connecting shaft 4 is opened in the middle of the connecting part 5, and the grinding tray 6 is detachably provided with Grinding sheet, the axis of the connecting shaft 4 and the axis of the grinding tray 6 are parallel to each other, the connecting cavity is an annular stepped shape with a diameter gradually increasing from top to bottom, and the side of the waterproof cover 1 is connected with the connecting cavity. The pneumatic joint 9 is connected with the air source pipeline of the polishing machine and controlled by an electromagnetic cut-off valve. Air is blown into the connecting cavity inside the waterproof cover 1 through the pneumatic joint 9, and the lower end surface of the waterproof cover 1 is sealed, so that the gas inside the waterproof cover 1 is blown out toward the grinding tray 6, so as to prevent dust and water from entering the waterproof cover from the upper end of the waterproof cover 1. 1 inside.

As shown in FIG. 6 , a sealing groove is formed on the lower end surface of the waterproof cover 1 around the support table, and a lower sealing ring 11 is arranged in the sealing groove. The lower sealing ring 11 is an oval sealing ring, a special-shaped sealing ring, Any one of the circular sealing rings, a support platform is protruded from the middle of the lower end surface of the waterproof cover 1 . The support table is used to support the waterproof cover 1 , the lower end surface of the waterproof cover 1 is sealed to improve the air tightness of the lower end of the waterproof cover 1 , and a lower sealing ring 11 is installed on the lower end surface of the waterproof cover 1 to improve the waterproof capability of the lower surface of the waterproof cover 1 .

The output shaft of the motor 2 and the locking shaft 3 are connected by locking screws. The output shaft of the motor 2 is provided with a mounting hole, and the mounting hole is provided with an internal thread corresponding to the locking screw, so The locking shaft 3 is provided with a through hole for the locking screw to pass through. The motor 2 and the locking shaft 3 are connected by locking screws, and the locking shaft 3 is easy to disassemble.

The upper end of the waterproof cover 1 is detachably provided with a cover plate 7 through an end cover screw, and the cover plate 7 is in the shape of a circular ring body. Water and flying debris are blocked by installing a cover plate 7 on the waterproof cover 1 .

The diameter of the locking shaft 3 decreases step by step from top to bottom. The locking shaft 3 is large at the top and small at the bottom, which is convenient to observe the connection position of the locking shaft 3 and the connecting shaft 4 during installation.

A gasket 10 is sandwiched between the connecting shaft 4 and the locking shaft 3 , and the gasket 10 includes an annular body coaxial with the grinding tray 6 . A gasket 10 is installed on the upper end face of the locking shaft 3, and the surface locking shaft 3 tells other components to strike when rotating.

As shown in Figures 1-3, the axis of the connecting shaft 4 and the axis of the grinding tray 6 are parallel to each other, that is, the connecting shaft 4 and the grinding tray 6 are eccentrically arranged, and the internal eccentricity of the connecting shaft 4 is provided with a stepwise decrease from top to bottom. A small eccentric groove, the connecting part 5 is sleeved into the eccentric groove through the bearing 13, the upper end of the connecting part 5 is provided with a shoulder abutting against the bearing 13, and the gasket 10 also includes an outer side of the ring body. The arc-shaped pad of the wall, the upper end surface of the annular body is in contact with the bearing 13 , the upper surface of the arc-shaped pad is in contact with the connecting shaft 4 , and the lower surface of the arc-shaped pad is in contact with the locking shaft 3 . The motor 2 drives the locking shaft 3 to rotate, and the locking shaft 3 drives the connecting shaft 4 to rotate. When the connecting shaft 4 rotates, the bearing 13 in the eccentric groove and the connecting part 5 rotate eccentrically around the axis of the connecting shaft 4, and the connecting part 5 is eccentric. The rotation causes the sanding tray 6 on the connecting part 5 to rotate eccentrically.

The upper end of the side wall of the connecting portion 5 is provided with a horizontal plate body, the lower surface of the water sheet plate body is provided with a positioning ring, and the upper end surface of the connecting shaft 4 is provided with a positioning groove corresponding to the positioning ring. The positioning ring and the positioning groove cooperate to locate the connecting portion 5, so that the connecting portion 5 can be quickly installed into the bearing 13 in the eccentric groove.

Example 2

As shown in FIGS. 4-5 , a waterproof and dustproof motor spindle grinding head provided by an embodiment of the present invention includes a waterproof cover 1 arranged on the machine base, and the upper end of the waterproof cover 1 is detachably installed through end cover screws. There is a cover plate 7, the cover plate 7 is a circular plate body, the lower end of the waterproof cover 1 is detachably connected with a motor 2, the output shaft of the motor 2 is detachably provided with a locking shaft 3, the The diameter of the locking shaft 3 is gradually reduced from top to bottom, the locking shaft 3 is provided with an external thread, the waterproof cover 1 is provided with a connecting cavity, and the connecting cavity is provided with a connecting shaft 4, The lower end of the connecting shaft 4 is provided with an internal thread groove that matches the external thread on the locking shaft 3, the connecting shaft 4 is provided with a connecting portion 5, and the upper end surface of the connecting portion 5 is detachably connected with a grinding tray 6. A threaded shaft 8 is fixed in the middle of the lower end face of the grinding tray 6, a threaded hole corresponding to the connecting shaft 4 is provided in the middle of the connecting portion 5, and a grinding sheet is detachably provided on the grinding tray 6, so The axis of the connecting shaft 4 is collinear with the axis of the grinding tray 6, the connecting cavity is an annular stepped shape whose diameter is gradually increased from top to bottom, and the side of the waterproof cover 1 is connected with a pneumatic joint 9 that communicates with the connecting cavity. , the pneumatic joint 9 is connected with the air source pipeline of the polishing machine and is controlled by an electromagnetic cut-off valve.

As shown in FIG. 6 , a sealing groove is formed on the lower end surface of the waterproof cover 1 around the support table, and a lower sealing ring 11 is arranged in the sealing groove. The lower sealing ring 11 is an oval sealing ring, a special-shaped sealing ring, Any one of the circular sealing rings, a support platform is protruded from the middle of the lower end surface of the waterproof cover 1 .

The output shaft of the motor 2 and the locking shaft 3 are connected by locking screws. The output shaft of the motor 2 is provided with a mounting hole, and the mounting hole is provided with an internal thread corresponding to the locking screw, so The locking shaft 3 is provided with a through hole for the locking screw to pass through.

A gasket 10 is sandwiched between the connecting shaft 4 and the locking shaft 3 , and the gasket 10 includes an annular body coaxial with the grinding tray 6 .

The axis of the connecting shaft 4 is collinear with the axis of the grinding tray 6 , the connecting portion 5 is integrally connected with the connecting shaft 4 , and the upper end surface of the annular body abuts the bearing 13 against the connecting shaft 4 . The motor 2 drives the locking shaft 3 to rotate, and the locking shaft 3 drives the connecting shaft 4 to rotate. When the connecting shaft 4 rotates, the connecting part 5 rotates with the connecting shaft 4, so that the grinding tray 6 on the connecting part 5 rotates.

Example 3

A waterproof and dustproof motor spindle grinding head provided by an embodiment of the present invention includes a waterproof cover 1 disposed on a machine base, and a cover plate 7 is detachably provided on the upper end of the waterproof cover 1 through end cover screws. 7 is a circular plate body, a motor 2 is detachably connected to the lower end of the waterproof cover 1, and a locking shaft 3 is detachably provided on the output shaft of the motor 2, and the diameter of the locking shaft 3 is from the top to the top The bottom is gradually reduced, the locking shaft 3 is provided with an external thread, the waterproof cover 1 is provided with a connecting cavity, and the connecting cavity is provided with a connecting shaft 4, and the lower end of the connecting shaft 4 is provided with a Lock the inner thread groove matched with the outer thread on the shaft center 3, the connecting shaft 4 is provided with a connecting part 5, the upper end surface of the connecting part 5 is detachably connected with a grinding tray 6, and the lower end surface of the grinding tray 6 is detachably connected A threaded shaft 8 is fixed in the middle, a threaded hole corresponding to the connecting shaft 4 is opened in the middle of the connecting part 5, and a grinding plate is detachably provided on the grinding tray 6, and the axis of the connecting shaft 4 is connected to the grinding tray. The axes of 6 are collinear or parallel to each other, the connecting cavity is an annular stepped shape with a diameter gradually increasing from top to bottom, the side of the waterproof cover 1 is connected with a pneumatic joint 9 communicating with the connecting cavity, and the pneumatic joint 9 is connected with the polishing The air source pipeline of the motor is connected and controlled by an electromagnetic cut-off valve. The inner wall of the connection cavity is embedded with a motor 2 sealing ring abutting on the upper end surface of the motor 2 .

A positioning block is provided on the lower surface of the grinding tray 6 , and the positioning block is provided with a slot for the upper end of the connecting portion 5 to be embedded. The positioning block locates the position of the connecting portion 5 on the upper end of the connecting shaft 4, so that the threaded shaft 8 and the threaded hole are aligned.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims (10)

1. A waterproof and dustproof motor spindle grinding head, characterized in that: it comprises a waterproof cover arranged on the machine base, the lower end of the waterproof cover is detachably connected with a motor, and the output shaft of the motor is detachably provided with a locking The shaft, the locking shaft is provided with an external thread, the waterproof cover is provided with a connecting cavity, the connecting cavity is provided with a connecting shaft, and the lower end of the connecting shaft is provided with an outer thread on the locking shaft. An internal thread groove matched with threads, a connecting portion is provided on the connecting shaft, a grinding tray is detachably connected to the upper end surface of the connecting portion, a threaded shaft is fixed in the middle of the lower end surface of the grinding tray, and a middle portion of the connecting portion is opened There is a threaded hole corresponding to the connecting shaft, the grinding plate is detachably provided with a grinding plate, the axis of the connecting shaft and the axis of the grinding tray are collinear or parallel to each other, and the diameter of the connecting cavity is from top to bottom. In the shape of a step-by-step annular step, the side surface of the waterproof cover is connected with a pneumatic joint communicating with the connection cavity, and the inner wall of the connection cavity is embedded with a motor sealing ring abutting against the upper end surface of the motor. 2 . The waterproof and dustproof motor spindle grinding head according to claim 1 , wherein a sealing groove is formed around the support table on the lower end surface of the waterproof cover, and a lower sealing ring is arranged in the sealing groove. It is any one of an oval sealing ring, a special-shaped sealing ring and a circular sealing ring, and a support platform is protruded from the middle of the lower end face of the waterproof cover. 3. The waterproof and dustproof motor spindle grinding head according to claim 1, characterized in that: the output shaft of the motor and the locking shaft are connected by locking screws, and the output shaft of the motor is provided with a mounting hole, so The mounting hole is provided with an inner thread corresponding to the locking screw, and the locking shaft is provided with a through hole through which the locking screw penetrates. 4 . The waterproof and dustproof motor spindle grinding head according to claim 1 , wherein the upper end of the waterproof cover is detachably provided with a cover plate by means of end cover screws, and the cover plate is in the form of an annular plate body. 5 . 5 . The waterproof and dustproof motor spindle grinding head according to claim 1 , wherein the diameter of the locking shaft decreases step by step from top to bottom. 6 . 6. The waterproof and dustproof motor spindle grinding head according to claim 1, characterized in that: a gasket is sandwiched between the connecting shaft and the locking shaft, and the gasket comprises a circle arranged coaxially with the grinding tray. Ring body. 7. The waterproof and dustproof motor spindle grinding head according to claim 6, characterized in that: when the axis of the connecting shaft and the axis of the grinding tray are parallel to each other, the eccentricity inside the connecting shaft is provided with a stepwise decrease from top to bottom. The eccentric groove, the connecting part is sleeved in the eccentric groove through the bearing, the upper end of the connecting part is provided with a shoulder abutting against the bearing, and the gasket also includes an arc-shaped gasket arranged on the outer side wall of the ring body, The upper end surface of the annular body is in contact with the bearing, the upper surface of the arc-shaped pad is in contact with the connecting shaft, and the lower surface of the arc-shaped pad is in contact with the locking shaft. 8 . The waterproof and dustproof motor spindle grinding head according to claim 7 , wherein the upper end of the side wall of the connecting portion is provided with a horizontal plate body, the lower surface of the water sheet plate body is provided with a positioning ring, and the connecting shaft is provided with a positioning ring. 9 . The upper end face is provided with a positioning groove corresponding to the positioning ring. 9. The waterproof and dustproof motor spindle grinding head according to claim 6, characterized in that: when the axis of the connecting shaft is collinear with the axis of the grinding tray, the connecting portion is integrally connected with the connecting shaft, and the annular The upper end surface of the main body is in contact with the connecting shaft. 10. The waterproof and dustproof motor spindle grinding head according to claim 7 or 9, wherein a positioning block is provided on the lower surface of the grinding tray, and the positioning block is provided with a slot for the upper end of the connecting part to be embedded.

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