Paint coating grinding machine

Abstract

The utility model relates to the technical field of paint coating production, and discloses a paint coating grinding machine which comprises a grinding machine body, a grinding disc is arranged at the bottom end of an output shaft of the grinding machine body, an adjusting assembly is arranged at the end of the output shaft of the grinding machine body, and the adjusting assembly comprises a connecting cylinder movably arranged at one end of the output shaft of the grinding machine body in a sleeving mode. The grinding disc and the bottom end of the connecting cylinder are detachably installed, a connecting ring is fixed to the outer wall of the connecting cylinder, and the outer wall of the output shaft of the sand mill body is in threaded connection with an adjusting nut. The length of the spring is adjusted, so that the spring can apply larger or smaller elastic force to the grinding disc, the spring generates reverse elastic force, the grinding disc applies pressure to the surface of a material, and therefore the downward pressure of the grinding disc to the surface of the material during grinding can be dynamically adjusted according to the grinding requirement; and therefore, the grinding effect of the sand mill is better, and the grinding speed is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of paint coating production, in particular to a paint coating grinding machine. Background Art

[0002] Paint sanding machine is a kind of equipment specially used for pretreatment of paint. Its main purpose is to improve the adhesion, uniformity and surface quality of the paint. Through sanding, the paint surface is smoother and more uniform, and the tiny particles and unevenness in the paint are eliminated to ensure the quality of the coating.

[0003] An existing paint and coating sanding machine (Announcement No.: CN220516398U) has at least the following disadvantages: the device cannot adjust the fitting pressure between the sanding disc and the material surface according to the sanding needs of different materials during actual use, and requires manual control by staff, and manual control is difficult to ensure the accuracy of the pressure. If the fitting pressure is too low, it will lead to low grinding efficiency, small material removal, and long grinding time. If the fitting pressure is too high, it may cause excessive wear of the grinding wheel and the material, generate too much heat, and even cause the risk of burning the workpiece or damaging the grinding wheel. For this reason, the present utility model is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a paint and coating sanding machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A paint and coating sander comprises a sander main body, a sanding disc is arranged at the bottom end of the output shaft of the sander main body, an adjusting component is arranged at the end of the output shaft of the sander main body, the adjusting component comprises a connecting tube movably sleeved on one end of the output shaft of the sander main body, the sanding disc and the bottom end of the connecting tube are detachably installed, a connecting ring is fixed to the outer wall of the connecting tube, an adjusting nut is threadedly connected to the outer wall of the output shaft of the sander main body, a pressure ring is arranged at the bottom end of the adjusting nut, and a spring is fixed between the connecting ring and the pressure ring.

[0007] As a further solution of the utility model, a square rod is fixed to the inner bottom surface of the connecting tube, the square rod is slidably inserted with the bottom end of the output shaft of the sand mill body, and a support frame is fixed to the bottom surface of the sand mill body.

[0008] As a further solution of the utility model, a mounting groove is provided on the top surface of the pressure ring, a thrust bearing is fixed inside the mounting groove, and the bottom surface of the adjusting nut is fixed to the top surface of the thrust bearing.

[0009] As a further solution of the utility model, two limiting rods are fixed to the bottom surface of the pressure ring, and the two limiting rods are slidably inserted into the top surface of the connecting ring.

[0010] As a further solution of the utility model, four universal balls are fixed to the bottom surface of the support frame, and the four universal balls are arranged in a circular array with the center of the support frame as the center.

[0011] As a further solution of the utility model, the outer wall of the sanding disc is slidably inserted with a mounting bolt, and the mounting bolt passes through the outer wall of the sanding disc and the connecting tube respectively, and one end of the mounting bolt is threadedly connected with a nut.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By setting an adjusting nut to drive the pressure ring to tighten the spring, the length of the spring can be adjusted so that the spring can apply a larger or smaller elastic force to the sanding disc. When the staff holds the sanding machine body and presses down the sanding disc to make it fit with the surface of the material, and then continues to press down so that the sanding disc and the support frame fit with the surface of the material at the same time, during this process, the connecting tube slides upward toward the outer wall of the output shaft of the sanding machine body, and applies compression force to the spring, so that the spring produces a reverse elastic force, so that the sanding disc presses on the surface of the material, thereby dynamically adjusting the downward pressure of the sanding disc on the surface of the material during sanding according to the sanding requirements, and the pressure is precisely controlled, without the need for manual control by the staff, thereby making the sanding effect of the sanding machine better and the sanding speed faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a paint and coating sanding machine proposed by the utility model;

[0015] Figure 2 This is a three-dimensional split structure schematic diagram of a paint and coating sanding machine proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the square rod of a paint and coating sanding machine proposed by the utility model;

[0017] Figure 4 for Figure 3 A schematic diagram of the enlarged local three-dimensional structure of the middle part.

[0018] In the figure: 1. Sand grinder body; 101. Sanding disc; 2. Connecting tube; 201. Connecting ring; 202. Adjusting nut; 203. Pressing ring; 204. Spring; 205. Square rod; 206. Support frame; 207. Mounting slot; 208. Thrust bearing; 3. Limit rod; 4. Universal ball; 5. Mounting bolt. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1-Figure 4 As shown, a paint and coating sander includes a sander body 1, a sanding disc 101 is provided at the bottom end of the output shaft of the sander body 1, an adjusting component is provided at the output shaft end of the sander body 1, the adjusting component includes a connecting tube 2 movably sleeved on one end of the output shaft of the sander body 1, the sanding disc 101 and the bottom end of the connecting tube 2 are detachably installed, a connecting ring 201 is fixed to the outer wall of the connecting tube 2, an adjusting nut 202 is threadedly connected to the outer wall of the output shaft of the sander body 1, a pressing ring 203 is provided at the bottom end of the adjusting nut 202, and a spring 204 is fixed between the connecting ring 201 and the pressing ring 203.

[0023] like Figure 2-Figure 4As shown, in this embodiment, a square rod 205 is fixed to the inner bottom surface of the connecting tube 2, and the square rod 205 is slidably inserted with the bottom end of the output shaft of the sand mill body 1. A support frame 206 is fixed to the bottom surface of the sand mill body 1. By setting an adjusting nut 202 to drive the pressing ring 203 to compress the spring 204, the length of the spring 204 can be adjusted, so that the spring 204 can apply a larger or smaller elastic force to the sanding disc 101. When the staff holds the sand mill body 1 and presses down the sanding disc 101, It fits with the surface of the material, and then continues to press down so that the sanding disc 101 and the support frame 206 fit with the surface of the material at the same time. During this process, the connecting tube 2 slides upward toward the outer wall of the output shaft of the sand grinder body 1, and applies compression force to the spring 204, so that the spring 204 produces a reverse elastic force, so that the sanding disc 101 presses on the surface of the material, so that the downward pressure of the sanding disc 101 on the surface of the material during sanding can be dynamically adjusted according to the sanding requirements, so that the sanding effect of the sand grinder is better and the sanding speed is faster.

[0024] like Figure 2-Figure 4 As shown, in this embodiment, a mounting groove 207 is provided on the top surface of the pressure ring 203, and a thrust bearing 208 is fixed inside the mounting groove 207. The bottom surface of the adjusting nut 202 is fixed to the top surface of the thrust bearing 208. By providing the thrust bearing 208, the adjusting nut 202 and the pressure ring 203 can slide relative to each other, thereby avoiding friction when the adjusting nut 202 rotates to push the pressure ring 203, causing wear of the adjusting nut 202 and the pressure ring 203, and affecting the service life of the device.

[0025] like Figure 2-Figure 4 As shown, in this embodiment, two limit rods 3 are fixed to the bottom surface of the pressure ring 203, and the two limit rods 3 are slidably inserted into the top surface of the connecting ring 201. By setting the limit rods 3, the pressure ring 203 can be limited to prevent the pressure ring 203 from rotating synchronously due to the friction force when the adjusting nut 202 rotates, causing the spring 204 to twist and causing damage to the spring 204.

[0026] like Figure 2-Figure 4 As shown, in this embodiment, four universal balls 4 are fixed to the bottom surface of the support frame 206. The four universal balls 4 are arranged in a circular array with the center of the support frame 206 as the center. By arranging the universal balls 4 to replace the bottom surface of the support frame 206 to fit the surface of the material, the friction between the support frame 206 and the surface of the material can be reduced when the support frame 206 moves, thereby increasing the service life of the device and the frosting effect on the material.

[0027] like Figure 2-Figure 4As shown, in the present embodiment, the outer wall of the sanding disc 101 is slidably inserted with a mounting bolt 5, and the mounting bolt 5 passes through the outer wall of the sanding disc 101 and the connecting tube 2 respectively, and one end of the mounting bolt 5 is threadedly connected with a nut. By arranging the mounting bolt 5 and the nut, it is convenient to detachably install the sanding disc 101 and the connecting tube 2, and it is convenient to replace different types of sanding discs 101 according to the sanding scene.

[0028] From the above description, it can be seen that the above-mentioned embodiment of the utility model achieves the following technical effects: in use, by rotating the adjusting nut 202, under the action of the adjusting nut 202 and the output shaft of the sand mill body 1 being threadedly connected, the adjusting nut 202 drives the pressure ring 203 to press down or relax the spring 204, so as to adjust the length of the spring 204, so that the spring 204 can apply a larger or smaller elastic force to the sanding disc 101. When the staff holds the sand mill body 1 and presses down the sanding disc 101 to make it fit with the surface of the material, and then continues to press down so that the sanding disc 101 and the universal ball 4 of the support frame 206 fit with the surface of the material at the same time, during this process, the connecting tube 2 slides upward toward the outer wall of the output shaft of the sand mill body 1, and at this time, the square rod 205 slides with the bottom end of the sand mill body 1, and the connecting ring 201 applies a compressive force to the spring 204 from bottom to top, so that the spring 204 generates a reverse elastic force, so that the sanding disc 101 presses the surface of the material. At this time, starting the sand grinder body 1 can drive the sanding disc 101 to sand the surface of the material. By setting the thrust bearing 208, the adjusting nut 202 and the pressure ring 203 can slide relative to each other, avoiding friction when the adjusting nut 202 rotates to push the pressure ring 203, causing wear of the adjusting nut 202 and the pressure ring 203, and affecting the service life of the device. By setting the limit rod 3, the pressure ring 203 can be limited to prevent the pressure ring 203 from rotating synchronously due to the friction when the adjusting nut 202 rotates, causing the spring 204 to twist and cause damage to the spring 204. By setting the universal ball 4 to replace the bottom surface of the support frame 206 to fit the material surface, the friction between the support frame 206 and the material surface when it moves can be reduced, thereby increasing the service life of the device and the sanding effect on the material. By setting the mounting bolts 5 and nuts, the sanding disc 101 and the connecting tube 2 can be detachably installed, so that different types of sanding discs 101 can be replaced according to the sanding scene.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A paint and coating sanding machine, comprising a sanding machine body (1), characterized in that: The bottom end of the output shaft of the sand mill body (1) is provided with a grinding disc (101), and the end of the output shaft of the sand mill body (1) is provided with an adjustment component, the adjustment component comprises a connecting tube (2) movably sleeved on one end of the output shaft of the sand mill body (1), the grinding disc (101) and the bottom end of the connecting tube (2) are detachably mounted, a connecting ring (201) is fixed to the outer wall of the connecting tube (2), an adjustment nut (202) is threadedly connected to the outer wall of the output shaft of the sand mill body (1), a pressure ring (203) is provided at the bottom end of the adjustment nut (202), and a spring (204) is fixed between the connecting ring (201) and the pressure ring (203).

2. A paint and coating sanding machine according to claim 1, characterized in that: A square rod (205) is fixed on the inner bottom surface of the connecting tube (2), the square rod (205) is slidably inserted into the bottom end of the output shaft of the sand mill body (1), and a support frame (206) is fixed on the bottom surface of the sand mill body (1).

3. A paint and coating sanding machine according to claim 2, characterized in that: The top surface of the pressure ring (203) is provided with a mounting groove (207), a thrust bearing (208) is fixed inside the mounting groove (207), and the bottom surface of the adjusting nut (202) is fixed to the top surface of the thrust bearing (208).

4. A paint and coating sanding machine according to claim 3, characterized in that: Two limiting rods (3) are fixed to the bottom surface of the pressure ring (203), and the two limiting rods (3) are slidably inserted into the top surface of the connecting ring (201).

5. A paint and coating sanding machine according to claim 4, characterized in that: Four universal balls (4) are fixed to the bottom surface of the support frame (206), and the four universal balls (4) are arranged in a circular array with the center of the support frame (206) as the center.

6. A paint and coating sanding machine according to claim 5, characterized in that: The outer wall of the sanding disc (101) is slidably provided with a mounting bolt (5), the mounting bolt (5) respectively penetrates the outer wall of the sanding disc (101) and the connecting tube (2), and one end of the mounting bolt (5) is threadedly connected with a nut.

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