Polishing pad for polishing in vehicle production

Abstract

The utility model provides a polishing pad for polishing in vehicle production, which relates to the technical field of vehicle production and comprises a sponge body. The sponge body comprises a polishing layer and a supporting layer which are connected with each other; wherein the polishing layer is made of blue sponge, and the supporting layer is made of white sponge; the thickness of the polishing layer is larger than that of the supporting layer, and the hardness of the polishing layer is smaller than that of the supporting layer. The polishing layer and the supporting layer are arranged, the hardness of the polishing layer is low, damage of the polishing layer to the surface of an automobile is small, the hardness of the supporting layer is high, effective supporting can be provided for the polishing layer, the situation that contact between the polishing layer and the surface of the automobile is affected due to excessive deformation of the polishing layer is prevented, and polishing of the same position can be controlled within about 12 seconds; compared with a soft polishing pad in the prior art, the polishing efficiency is improved, and for a hard polishing pad, damage of the polishing pad to the surface of the automobile is controlled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile production, concretely relates to a polishing pad for polishing in vehicle production. BACKGROUND

[0002] After the surface of the automobile is sprayed, small defects such as coarse particles, sandpaper marks, flow marks, reverse white, and orange peel may appear on the paint film surface. In order to compensate for these defects, polishing treatment is usually performed after spraying to improve the mirror effect of the paint film and achieve the requirements of brightness, smoothness, and brilliance. In the polishing operation, sponges are often used to polish the surface of the vehicle paint. Sponge polishing is used to remove fine scratches, oxidation layers, and stains on the surface of the vehicle paint and restore the gloss and smoothness of the vehicle paint.

[0003] In the prior art, blue sponges or yellow sponges are generally used as polishing pads. The sponges are fixed to the surface of a polishing machine, the parameters of the polishing machine are adjusted reasonably, the polishing machine is held, the polishing pad is brought into natural contact with the paint surface, excessive pressure is avoided, and the polishing pad is moved at a uniform and smooth speed to ensure uniform polishing.

[0004] However, the hardness of blue sponges and yellow sponges is low, which easily causes the polishing pad to deform under pressure and may result in the polishing pad not being able to effectively contact the surface of the automobile during polishing, thus requiring a longer polishing time and leading to low efficiency. In the polishing process of Tesla, polishing at the same position requires about 20 seconds. When black sponges are used, the black sponges are hard, and if there are small protrusions on the surface of the automobile (such as small particles on the paint surface) or small vibrations during operation, the hard sponges are more likely to scratch the surface of the automobile.

[0005] Therefore, it is necessary to provide a polishing pad with moderate hardness. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a polishing pad with moderate hardness to solve the problem that low hardness of the polishing pad in the prior art leads to low efficiency and high hardness easily causes scratches.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A polishing pad for polishing in vehicle production, comprising a sponge body;

[0009] The sponge body comprises a polishing layer and a supporting layer connected to each other;

[0010] The polishing layer is blue sponge, and the supporting layer is white sponge.

[0011] The thickness of the polishing layer is greater than that of the supporting layer, and the hardness of the polishing layer is less than that of the supporting layer.

[0012] Preferably, the ratio of the thickness of the polishing layer to the thickness of the supporting layer is in the range of 3 / 2-3 / 1.

[0013] Preferably, the polishing layer and the supporting layer are hot melt connected.

[0014] Preferably, the polishing layer is provided with a chamfer in the circumferential direction.

[0015] Preferably, the porosity of the blue sponge is between 70% and 95%.

[0016] Preferably, the porosity of the white sponge is between 60% and 70%.

[0017] Preferably, the hardness value of the blue sponge is between 40 and 60 HA.

[0018] Preferably, the hardness value of the white sponge is greater than that of the blue sponge, and the hardness value of the white sponge is between 60 and 70 HA.

[0019] Preferably, the cross-sectional area of the polishing layer is greater than that of the supporting layer.

[0020] Beneficial effects:

[0021] (1) The polishing layer and the supporting layer are provided, the polishing layer is a blue sponge, the texture is relatively soft, the supporting layer is a white sponge, the texture is relatively hard, the polishing layer directly contacts the surface of the automobile, in the polishing process, the polishing layer is deformed under stress, the polishing paste penetrates into the pores of the polishing layer, and is coated on the surface of the automobile with the rotation of the polishing layer, the polishing layer has small damage to the surface of the automobile, the hardness of the supporting layer is high, the polishing layer can be effectively supported, excessive deformation of the polishing layer is prevented, contact with the surface of the automobile is affected, and the polishing paste can be uniformly coated on the surface of the automobile. By using the polishing pad, the polishing of the same position can be controlled to be about 12 seconds, compared with the relatively soft polishing pad in the prior art, the polishing efficiency is improved, and the damage of the polishing pad to the surface of the automobile is controlled.

[0022] (2) The cross-sectional area of the polishing layer is greater than that of the supporting layer, the coverage of the polishing layer on the supporting layer is improved, when polishing the door handle, the quarter window and other corner parts, the protruding polishing layer first contacts the corner part, which can prevent the supporting layer from contacting the corner part to a certain extent, and reduce the possibility of scratching the surface of the automobile.

[0023] (3) The chamfer is arranged on the polishing layer in the circumferential direction, and the chamfer is used to eliminate the sharp parts of the outer edge of the polishing layer, when contacting the door handle, the quarter window and other corner parts, the sharp parts can effectively reduce the damage to the surface of the automobile. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form a part of the specification, illustrate the present application and, together with the description, serve to explain the principles of the present application. In the drawings:

[0025] Figure 1 A structural schematic view of the sponge body in the embodiment of the present application;

[0026] Figure 2 An exploded structural schematic view of the sponge body in the embodiment of the present application;

[0027] Figure 3 A structural schematic view of the sponge body in the embodiment 1 of the present application;

[0028] Figure 4 A structural schematic view of the sponge body in the embodiment 2 of the present application.

[0029] In the drawings: 1, sponge body; 2, polishing layer; 3, support layer; 4, chamfer. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that, in relation to the position description, for example, the position or location relationship indicated by the upper, lower, front, back, left, right, etc. is based on the position or location relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more. Greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, etc., it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or the sequence of the indicated technical features.

[0033] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features.

[0034] In the description of the utility model, it is necessary to explain that, unless there is explicit stipulation and limitation, the term "connection" should be understood broadly, for example, it can be fixed connection or movable connection, or detachable connection or non-detachable connection, or integrally connected, it can be mechanical connection, or electrical connection or can communicate with each other, it can be directly connected, or indirectly connected through intermediate medium, it can be internal communication of two elements, indirect communication or interaction relationship of two elements.

[0035] In the description of the utility model, "before use" refers to the state of the polishing pad for vehicle production polishing before use, not in contact with the automobile paint surface, "in use" refers to the state of the polishing pad for vehicle production polishing after being used, being bonded with the polishing machine and being in contact with the automobile paint surface.

[0036] In the description of the utility model, the hardness numerical unit "HA" refers to the measurement under the Shore hardness tester. The Shore hardness tester is an instrument for measuring the hardness of materials. The Shore hardness tester mainly determines the hardness of materials by measuring the depth of the pressure needle penetrating into the surface of the material under certain pressure.

[0037] The utility model will be described in detail in combination with embodiments. It should be noted that:

[0038] In the case of no conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0039] The utility model aims at the problem that when the polishing pad with lower hardness is used in the prior art, the polishing pad deforms under pressure, which may cause that the polishing pad cannot effectively contact the surface of the automobile during polishing, resulting in long polishing time and low efficiency, and when the polishing pad with higher hardness is used, the hard sponge is more likely to scratch the surface of the automobile if there is a small protrusion (such as small particles on the paint surface) on the surface of the automobile during polishing or there is a small jitter during operation.

[0040] The utility model provides a polishing pad for vehicle production polishing, referring to Figure 1 , Figure 2 and Figure 3 , comprising a sponge body 1, the sponge body 1 is made of polyurethane material, and the whole is disc-shaped, and the sponge body 1 has porosity;

[0041] Referring to Figure 1 and Figure 2The sponge body 1 comprises a polishing layer 2 and a supporting layer 3 connected with each other; specifically, the polishing layer 2 is in a whole piece, the supporting layer 3 is also in a whole piece, the polishing layer 2 and the supporting layer 3 are connected together by hot melting, and then are cut by a cutting device to form a disc shape.

[0042] The polishing layer 2 is a blue sponge, and the supporting layer 3 is a white sponge; the blue sponge is made of polyurethane material, the hardness of the blue sponge is medium-soft, and the porosity is high, so that the polishing agent can be uniformly released during polishing, which helps to achieve more uniform polishing effect; in actual operation, the polishing layer 2 directly contacts the automobile paint surface. The white sponge is also made of polyurethane material, and the porosity of the white sponge is lower than that of the blue sponge, and the texture is relatively tight; in actual operation, the supporting layer 3 is used to support the polishing layer 2, and the end of the supporting layer 3 away from the polishing layer 2 is fixedly connected with the polishing machine.

[0043] In a preferred embodiment, the supporting layer 3 is connected with the polishing machine by magic tape, so that the polishing pad can be quickly assembled and disassembled.

[0044] The thickness of the polishing layer 2 is greater than that of the supporting layer 3, and the hardness of the polishing layer 2 is less than that of the supporting layer 3. The ratio of the thickness of the polishing layer 2 to the thickness of the supporting layer 3 can be one of 2 / 1, 3 / 2, 3 / 1, 5 / 3, 5 / 2 and 7 / 3. The hardness value of the polishing layer 2 can be one of 40HA, 45HA, 50HA, 55HA and 60HA. The hardness value of the supporting layer 3 can be one of 60HA, 65HA and 70HA.

[0045] It should be noted that when the hardness value of the supporting layer 3 is 60HA, the hardness value of the polishing layer 2 cannot be 60HA, and is preferably 40HA. Preferably, the hardness value of the supporting layer 3 is at least 10HA higher than the hardness value of the polishing layer 2.

[0046] In use, the supporting layer 3 is connected with the polishing machine by magic tape, and then the polishing paste is applied to the surface of the polishing layer 2, so that the polishing layer 2 is naturally contacted with the automobile surface to avoid excessive pressing. A small amplitude moving mode is adopted to ensure uniform polishing. During polishing, the polishing layer 2 is deformed under stress, and the supporting layer 3 has high hardness, which can provide effective support for the polishing layer 2, so that the polishing paste can be uniformly applied to the automobile surface. Due to the presence of the polishing layer 2, it is difficult for the supporting layer 3 to directly contact the automobile surface, so it is difficult to produce scratches on the automobile surface. By using the polishing pad, the polishing of the same position can be controlled within 12 seconds, compared with the soft polishing pad in the prior art, the polishing efficiency is improved, and for the hard polishing pad, the damage to the automobile surface is controlled. The problem that the hardness of the polishing pad in the prior art is low, which leads to low efficiency, and the hardness is high, which is easy to produce scratches, is overcome.

[0047] In the preferred embodiment of the present application, the thickness ratio of the polishing layer 2 to the supporting layer 3 is in the range of 3 / 2 to 3 / 1. In actual operation, it is found that when the thickness ratio of the polishing layer 2 to the supporting layer 3 is 1 / 1, scratches appear on the surface of the car when the sponge adsorbs large particle impurities and rubs against the surface of the car, which is caused by the relatively thick supporting layer 3. When the thickness ratio of the polishing layer 2 to the supporting layer 3 is 4 / 1, it takes 19-20 seconds to polish the same position, which is caused by the relatively thick polishing layer 2 and the supporting layer 3 is difficult to support the polishing layer 2, and the polishing efficiency is limited. When the thickness ratio of the polishing layer 2 to the supporting layer 3 is 3 / 2 to 3 / 1, the polishing time can be shortened to 12-14 seconds, and the surface of the car is difficult to appear scratches, which is a preferred embodiment.

[0048] In the preferred embodiment of the present application, the polishing layer 2 and the supporting layer 3 are hot melt connected. The hot melt connection is to melt the polishing layer 2 and the supporting layer 3 after heating to a certain temperature, and then fuse together. This connection method can make the polishing layer 2 and the supporting layer 3 form a whole, and the connection is more compact. In the process of rotating polishing, it can withstand a large pressure, and ensure the stability and safety of the polishing pad. At the same time, no glue, sealant and other chemicals are used in the hot melt connection process, and no harmful substance emission and pollution are generated, which is friendly to the environment.

[0049] In other embodiments of the present application, the polishing layer 2 and the supporting layer 3 can be connected by glue. This embodiment can also achieve the shortening of the polishing time. However, since the glue can generate a glue connection layer between the polishing layer 2 and the supporting layer 3, the glue connection layer is hard and may scratch the surface of the car.

[0050] In the preferred embodiment of the present application, the polishing layer 2 is provided with a chamfer 4 in the circumferential direction. Specifically, the chamfer 4 is arranged to eliminate the sharp parts of the outer edge of the polishing layer 2, and when contacting the door handle, the corner window and other corners, it can effectively reduce the damage to the surface of the car and avoid scratches caused by sharp parts.

[0051] In the preferred embodiment of the present application, the porosity of the blue sponge is between 70% and 95%. The porosity of the blue sponge is relatively high, and after contacting the polishing paste, it can fully absorb the polishing paste in the rotating process, so that the polishing paste is more evenly applied.

[0052] In the preferred embodiment of the present application, the porosity of the white sponge is between 60% and 70%. The porosity of the white sponge is lower than that of the blue sponge, so that the hardness of the white sponge is higher, and the amount of polishing paste penetrating into the supporting layer 3 can be reduced.

[0053] In the preferred embodiment of the utility model, the hardness value of the blue sponge is between 40-60HA. The hardness value of the blue sponge is relatively low, making the polishing layer 2 relatively soft, and the deformation makes the polishing layer 2 adhere to the surface of the automobile more closely, and the wear on the surface of the automobile is relatively small.

[0054] In the preferred embodiment of the utility model, the hardness value of the white sponge is greater than that of the blue sponge, and the hardness value of the white sponge is between 60-70HA. By setting the white sponge with higher hardness, the supporting layer 3 supports the polishing layer 2, preventing the polishing layer 2 from deforming excessively and not effectively contacting the surface of the automobile.

[0055] In the preferred embodiment of the utility model, the cross-sectional area of the polishing layer 2 is greater than that of the supporting layer 3. Here, the cross-sectional area refers to the cross-sectional area of the polishing layer 2 and the supporting layer 3 perpendicular to the axial direction. The purpose of this setting is to allow the polishing layer 2 to more comprehensively cover the supporting layer 3, reducing the possibility of the supporting layer 3 contacting the surface of the automobile at the corner of the door handle, the quarter window, etc., thereby reducing the possibility of scratching the surface of the automobile.

[0056] The utility model discloses a polishing pad for polishing of vehicle production is described in detail below through specific embodiment.

[0057] Embodiment 1

[0058] The embodiment provides a polishing pad for polishing of vehicle production, referring to Figure 3 , comprising a sponge body 1 made of polyurethane material, the sponge body 1 is disc-shaped and has pores. The sponge body 1 includes a polishing layer 2 and a supporting layer 3 connected by hot melting. Specifically, the polishing layer 2 is blue sponge, the supporting layer 3 is white sponge, and the hardness of the supporting layer 3 is higher than that of the polishing layer 2. The polishing layer 2 directly contacts the surface of the automobile during polishing operation, while the supporting layer 3 is used to support the polishing layer 2, and the supporting layer 3 does not contact the surface of the automobile.

[0059] Preferably, the ratio of the polishing layer 2 and the supporting layer 3 is 3 / 1, the hardness value of the polishing layer 2 is 40HA, the hardness value of the supporting layer 3 is 60HA, the porosity of the polishing layer 2 is 95%, and the porosity of the supporting layer 3 is 70%.

[0060] During use, due to the pores in the support layer 3, Velcro is used on the polishing machine to connect the support layer 3. Polishing compound is then applied to the surface of the polishing layer 2, allowing it to naturally contact the car surface. It is important to avoid applying excessive pressure. Set the polishing machine to appropriate parameters and start it, using small, controlled movements to ensure even polishing. During polishing, the polishing layer 2 deforms under pressure, allowing the polishing compound to penetrate its pores and be applied to the car surface as the polishing layer 2 rotates. The high hardness of the support layer 3 provides effective support for the polishing layer 2, preventing excessive deformation that could affect contact with the car surface, thus ensuring the polishing compound is applied evenly.

[0061] By incorporating a polishing layer 2 and a support layer 3, the support layer 3, being softer, causes less damage to the car's surface during polishing, making scratches less likely. Furthermore, due to the presence of the polishing layer 2, the support layer 3 rarely comes into direct contact with the car's surface, further reducing the likelihood of scratches. Using this polishing pad, polishing time for the same location can be controlled to approximately 12 seconds. Compared to softer polishing pads in existing technology, polishing efficiency is improved, and damage to the car's surface is controlled compared to harder polishing pads. Using this polishing pad, the polishing time for the same location can be shortened to approximately 12 seconds, effectively improving polishing efficiency.

[0062] Preferably, the polished layer 2 has a chamfer 4 in the circumferential direction. The chamfer 4 is used to eliminate the sharp parts of the outer edge of the polished layer 2. When it comes into contact with corners such as door handles and triangular windows, it can effectively reduce the damage of sharp parts to the car surface.

[0063] Example 2

[0064] The difference between this embodiment and Embodiment 1 is that: (Refer to...) Figure 4 The cross-sectional area of ​​polishing layer 2 is larger than that of support layer 3. Here, cross-sectional area refers to the cross-sectional area of ​​polishing layer 2 and support layer 3 perpendicular to their own axis. The purpose is to increase the coverage of support layer 3 by polishing layer 2. When polishing corners such as door handles and triangular windows, the protruding polishing layer 2 contacts the corner first, which can prevent support layer 3 from contacting the corner to a certain extent and reduce the possibility of scratching the car surface.

[0065] In summary: the utility model discloses a polishing pad is provided with polishing layer 2 and support layer 3, in the polishing process, the stress deformation of polishing layer 2, and the polishing paste penetrates into the aperture of polishing layer 2, and with the rotation of polishing layer 2 and is applied to the surface of car. The hardness of support layer 3 is higher, can provide effective support for polishing layer 2, prevent polishing layer 2 excessive deformation and influence with the surface of car, so that the polishing paste can be evenly applied on the surface of car. The support layer 3 is relatively soft, and the damage to the surface of car is relatively small in the polishing process, and it is difficult to produce scratch, and due to the existence of polishing layer 2, the support layer 3 is difficult to directly contact with the surface of car, so it is difficult to produce scratch on the surface of car. By using the polishing pad, the polishing of the same position on the surface of car can be controlled to about 12 seconds, compared with the relatively soft polishing pad in the prior art, the efficiency of polishing is improved, and the damage to the surface of car is controlled for the relatively hard polishing pad.

[0066] The above only for the preferred embodiment of the utility model, and does not limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A polishing pad for vehicle manufacturing polishing, characterized in that, Includes the sponge body (1); The sponge body (1) includes a polishing layer (2) and a support layer (3) that are connected to each other; The polishing layer (2) is a blue sponge, and the support layer (3) is a white sponge. The thickness of the polishing layer (2) is greater than the thickness of the support layer (3), and the hardness of the polishing layer (2) is less than the hardness of the support layer (3).

2. The polishing pad for vehicle production polishing according to claim 1, characterized in that, The ratio of the thickness of the polishing layer (2) to the thickness of the support layer (3) is in the range of 3 / 2 to 3 / 1.

3. The polishing pad for vehicle production polishing according to claim 1, characterized in that, The polishing layer (2) and the support layer (3) are thermally fused together.

4. The polishing pad for vehicle production polishing according to claim 1, characterized in that, The polished layer (2) has a chamfer (4) in the circumferential direction.

5. A polishing pad for vehicle production polishing according to claim 1, characterized in that, The porosity of the blue sponge is between 70% and 95%.

6. A polishing pad for vehicle production polishing according to claim 1, characterized in that, The porosity of the white sponge is between 60% and 70%.

7. A polishing pad for vehicle production polishing according to claim 1, characterized in that, The hardness value of the blue sponge is between 40 and 60 HA.

8. A polishing pad for vehicle production polishing according to any one of claims 1-7, characterized in that, The hardness value of the white sponge is greater than that of the blue sponge, and the hardness value of the white sponge is between 60 and 70 HA.

9. A polishing pad for vehicle production polishing according to any one of claims 1-7, characterized in that, The cross-sectional area of ​​the polishing layer (2) is larger than that of the support layer (3).

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