Anti-splashing device for automatic polishing mechanism of automobile paint surface

Abstract

The utility model discloses an anti-splashing device for an automatic polishing mechanism of an automobile paint surface. The anti-splashing device comprises a fixing mechanism, a telescopic mechanism and a protective cover, the fixing mechanism is of a hollow structure, can surround the periphery of a polishing head of the automatic polishing mechanism for the automobile paint face in the circumferential direction and is fixedly connected with the polishing head. The protective cover is of a hollow structure and comprises a round pipe and a horn mouth which are connected into a whole. The telescopic mechanism comprises a fixed end and a movable end, and the fixed end is fixed on the outer wall of the fixed mechanism; the movable end is fixed to the protective cover and can drive the protective cover to do telescopic motion in the axial direction of the polishing head of the automatic polishing mechanism for the automobile paint face. According to the device, polishing dust and polishing liquid are effectively shielded, and meanwhile, enough space is reserved for a polishing working end when a polishing tool is automatically replaced or a polishing pad is infiltrated; and the device is good in combinability, simple, practical, efficient and safe.

Description

Technical Field

[0001] The utility model relates to the field of automatic grinding and polishing in automobile manufacturing, in particular to an anti-splashing device used for an automatic polishing mechanism for automobile paint surfaces. Background Art

[0002] In the coating process of automobile manufacturing, the body-in-white that has completed electrophoresis and spray painting will enter the paint surface inspection station to detect and repair the paint surface defects of the body. In the automated production workshop, the automatic detection and repair of automobile paint surface defects is completed by robots, which need to automatically grind and polish the defective points of the paint surface to achieve the repair of paint surface defects.

[0003] The process of paint polishing and repair is to use a robot to drive the polishing head to rotate at high speed, so as to achieve the grinding and polishing of defective paint surfaces. In this process, due to the high-speed rotation of the polishing head, polishing dust and polishing liquid will inevitably splash to other parts of the car body with the rotation of the polishing head, especially when polishing defects near curved surfaces and edges, even causing the entire car body to be covered with polishing dust and polishing liquid, which causes other clean non-polishing areas of the car to be contaminated. The existing automatic wiping equipment cannot achieve large-area dirty wiping, and even if it can be achieved, it will seriously affect the production rhythm.

[0004] Therefore, in order to solve the above-mentioned problem, the current basic method of installing a fixed cover is to solve the problem; and this method, because the anti-splash cover is fixed on the polishing head, the splashing polishing liquid and polishing dust are shielded by the anti-splash cover during polishing. Although it can effectively block the splashing dust and polishing liquid during the polishing process, the anti-splash cover is fixed on the polishing head and cannot be moved on the polishing head. When the polishing head needs to go to the workstation or the wetting table for automatic replacement or wetting of the polishing pad, the anti-splash cover fixed on the polishing head will interfere with the parts around the workstation or the wetting table, thereby causing the automatic replacement or wetting of the polishing pad to fail to proceed normally. Summary of the invention

[0005] In order to solve the above technical problems, the utility model provides an anti-splash device for an automatic polishing mechanism for automobile paint, which can realize the position movement of the anti-splash device on the automatic polishing tool. When the polishing tool is working, the splashing dust and polishing liquid can be effectively shielded; when the polishing tool is preparing for polishing and changing materials, the space can be avoided to the auxiliary components of the workstation or the infiltration table.

[0006] To this end, the technical solution of the utility model is as follows:

[0007] An anti-splash device for an automatic polishing mechanism for automobile paint surface, comprising a fixing mechanism, a telescopic mechanism and a protective cover;

[0008] The fixing mechanism is a hollow structure, which can surround the polishing head of the automatic polishing mechanism for the automobile paint surface in a circumferential direction and be fixedly connected thereto;

[0009] The protective cover is a hollow structure, including a circular tube and a bell mouth connected as one body;

[0010] The telescopic mechanism includes a fixed end and a movable end, wherein the fixed end is fixed on the outer wall of the fixed mechanism; the movable end is fixed to the protective cover, and can drive the protective cover to perform telescopic movement along the axial direction of the polishing head of the automatic polishing mechanism for automobile paint; when the telescopic mechanism is extended, the protective cover can be moved to the polishing head under the push of the movable end, and form a surrounding shielding around the polishing head; when the telescopic mechanism is retracted, the protective cover can be retracted together with the movable end, thereby exposing the polishing head.

[0011] Furthermore, the telescopic mechanism is a single-acting cylinder or an electric cylinder.

[0012] Furthermore, in order to reduce the requirements on the processing and installation accuracy of parts, a floating joint is provided at the connection between the protective cover and the movable end of the telescopic mechanism.

[0013] Furthermore, in order to ensure the stability and smoothness of the telescopic mechanism, the telescopic mechanism also includes a guide shaft and a linear bearing sliding along it; one end of the guide shaft is fixed on the outer wall of the fixing mechanism; the linear bearing is fixed on the protective cover; the protective cover and the linear bearing slide synchronously along the guide shaft.

[0014] Furthermore, the guide shafts and linear bearings are in two or four pairs; the two or four pairs of guide shafts and linear bearings are symmetrically distributed along the center line of the polishing head of the automatic polishing mechanism for the automobile paint surface.

[0015] Furthermore, in order to ensure that the protective cover effectively shields the polishing splashes and prevents the bell mouth from excessive contact with the paint surface of the vehicle body and causing rigid damage, the lower edge of the bell mouth of the protective cover is provided with a circumferentially distributed soft brush. When the protective cover is extended out along with the telescopic mechanism to form a surrounding shielding at the periphery of the polishing head, the bottom surface of the polishing head is between the lower edge of the bell mouth and the lower edge of the soft brush. When the polishing head is working, the soft brush at the lower edge of the protective cover contacts with the vehicle body and squeezes the vehicle body, thereby tightly protecting the polishing head in the enclosed space formed by the vehicle body and the protective cover.

[0016] Furthermore, the protective cover also includes a brush assembly, which is surrounded on the outside of the bell mouth, and the length of the brush assembly is greater than the side length of the bell mouth. When the protective cover is extended along with the telescopic mechanism to form a surrounding shielding on the periphery of the polishing head, the bottom surface of the polishing head is between the lower edge of the bell mouth and the lower edge of the brush assembly; when the polishing head is working, the brush assembly of the protective cover contacts with the vehicle body and squeezes the vehicle body, thereby tightly protecting the polishing head in the enclosed space formed by the vehicle body and the protective cover.

[0017] Furthermore, the brush assembly includes a base and a brush formed at one end of the base; the base is a soft structure, which can be formed along the circumference of the circular tube, and the brush can be unfolded along the expansion direction of the bell mouth; the brush has a preset thickness, which can ensure that after the brush assembly is unfolded along the side of the bell mouth, the tail end of the brush will not have a brush gap due to the increase in the unfolding circumference;

[0018] The length of the brush should meet the following conditions:

[0019] l = (d / cosα) + t;

[0020] Wherein: l is the length of the brush; d is the distance from the connection between the bell mouth and the round tube to the end of the polishing head of the automatic polishing device for automobile paint; α is the angle between the side wall of the bell mouth and the axis, t=1-10 cm.

[0021] Furthermore, in order to facilitate the cleaning and replacement of the brush assembly, a fastening tie or Velcro is provided on the brush assembly, and the brush assembly can be separately disassembled and assembled from the protective cover.

[0022] The beneficial effects of the utility model are as follows: by arranging a telescopic mechanism, the problem that the fixed anti-splash cover affects the automatic replacement of the polishing tool or the infiltration of the polishing pad is effectively solved; it can effectively shield the polishing dust and the polishing liquid when the polishing tool is polishing, and it can also leave enough space for the polishing working end when the polishing tool is automatically replaced or the polishing pad is infiltrated; and the device has good combination, is simple and practical, efficient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the telescopic mechanism of the utility model when it is retracted;

[0024] Figure 2 It is a structural schematic diagram of the telescopic mechanism of the utility model when it is extended;

[0025] Figure 3 It is a schematic diagram of the protective cover structure;

[0026] Figure 4 Schematic diagram of the brush assembly structure. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1 , 2As shown, an anti-splash device for an automatic polishing mechanism for automobile paint surface comprises a fixing mechanism 1, a telescopic mechanism 2 and a protective cover 3; wherein the fixing mechanism 1 is a hollow structure, which can form a circumferential surround around the polishing head of the automatic polishing mechanism for automobile paint surface and be fixedly connected thereto; Figure 3 As shown, the protective cover 3 is a hollow structure, including a circular tube 31 and a trumpet mouth 32 connected as one body; the telescopic mechanism includes a fixed end 21 and a movable end 22, and the fixed end is fixed on the outer wall of the fixed mechanism 1; the movable end is fixed to the protective cover 3, and can drive the protective cover 3 to perform telescopic movement along the axial direction of the polishing head of the automatic polishing mechanism for automobile paint; when the telescopic mechanism 2 is extended, the protective cover 3 can be moved to the polishing head under the push of the movable end 22, and form a surrounding shielding in the circumferential direction of the polishing head; when the telescopic mechanism 2 is retracted, the protective cover 3 can be retracted together with the movable end 22, so as to expose the polishing head.

[0029] In the specific implementation process, the telescopic mechanism 2 can adopt a mechanical structure such as a single-acting cylinder or an electric cylinder that can achieve telescopic movement; Figure 1 , 2 As shown, taking a single-acting cylinder as an example, a first connecting plate extending outward is provided on the outer wall of the fixing mechanism, and the cylinder barrel (i.e., the fixed end) of the single-acting cylinder is fixed on the first connecting plate to achieve a fixed connection between it and the fixing mechanism; a second connecting plate extending toward the outside of the tube wall is also provided on the circular tube of the protective cover, and the push rod (and the moving end) of the single-acting cylinder is fixed on the second connecting plate to achieve a fixed connection between it and the protective cover 3.

[0030] Furthermore, in order to reduce the requirements for parts processing and installation accuracy, a floating joint 4 is provided at the connection between the protective cover 3 and the movable end 22 of the telescopic mechanism; that is, when the telescopic mechanism adopts a single-acting cylinder, a floating joint is provided at the connection between its push rod and the protective cover, which can offset the cylinder movement jamming caused by insufficient processing or installation accuracy.

[0031] like Figure 1 , 2 As shown, in order to ensure the stability and smoothness of the telescopic mechanism, the telescopic mechanism 2 also includes a guide shaft 23 and a linear bearing 24; the linear bearing 24 is fixedly arranged on the second connecting plate of the protective cover 3; one end of the guide shaft 23 is fixed to the bottom surface of the outer wall of the fixing mechanism 1, and the other end passes through the second connecting plate of the protective cover and is slidably connected with the linear bearing 24, so that the protective cover and the linear bearing can slide synchronously along the guide shaft.

[0032] The guide shaft 23 and the linear bearing 24 are used in combination. In the specific implementation process, they can be designed into two or four pairs according to the size of the anti-splash device; the two or four pairs of guide shafts and linear bearings are symmetrically distributed along the center line of the polishing head of the automatic polishing mechanism of the automobile paint surface.

[0033] Furthermore, in order to ensure that the protective cover effectively shields the polishing splashes and prevents the bell mouth from excessive contact with the paint surface of the vehicle body and causing rigid damage, the lower edge of the bell mouth 32 of the protective cover is provided with a circumferentially distributed soft brush. When the protective cover 3 is extended along with the telescopic mechanism 2 to form a surrounding shielding at the periphery of the polishing head, the bottom surface of the polishing head is between the lower edge of the bell mouth and the lower edge of the soft brush; when the polishing head is working, the soft brush at the lower edge of the protective cover contacts with the vehicle body and squeezes the vehicle body, thereby tightly protecting the polishing head in the enclosed space formed by the vehicle body and the protective cover.

[0034] In addition, to achieve the above purpose, the soft brush can be replaced by a brush assembly 5, which is surrounded by the outside of the bell mouth and has a length greater than the side length of the bell mouth; when the polishing head is working, the brush assembly of the protective cover contacts the car body and squeezes the car body, tightly protecting the polishing head in the enclosed space formed by the car body and the protective cover.

[0035] like Figure 4 As shown, in a specific implementation, the brush assembly 5 includes a base 51 and a brush 52 formed at one end of the base; the base is a soft structure, which can be formed around the circular tube 31 in the circumferential direction, and the brush 52 can be unfolded along the expansion direction of the bell mouth 32; the brush 52 has a preset thickness, which can ensure that after the brush assembly 5 is unfolded along the side of the bell mouth, the tail end of the brush will not have a brush gap due to the increase in the unfolding circumference;

[0036] The length of the brush should meet the following conditions:

[0037] l=(d / cosα)+t;

[0038] Wherein: l is the length of the brush 52; d is the distance from the connection between the bell mouth and the round tube to the end of the polishing head of the automatic polishing device for automobile paint surface; α is the angle between the side wall of the bell mouth and the axis, t=1-10 cm.

[0039] Furthermore, in order to facilitate cleaning and replacement of the brush assembly, a fastening tie or Velcro 6 is provided on the brush assembly 5, and the brush assembly can be separately disassembled and assembled from the protective cover.

[0040] After the anti-splash device for the automatic polishing mechanism of automobile paint is installed on the polishing head of the automatic polishing mechanism of automobile paint, when the polishing head needs to polish the defective points of the car body, the telescopic mechanism 2 is extended, and the protective cover 3 will move toward the polishing head along the axis of the polishing head under the action of the telescopic mechanism 2 until the polishing head is completely covered inside it, so as to ensure that the polishing splashes generated by the polishing head can be blocked by the protective cover inside the cover, so as to avoid large-scale pollution to the surrounding car body; when the polishing head finishes the polishing operation of the defective points of the car body and needs to go to the workstation or the infiltration table for automatic replacement or infiltration of the polishing pad, the telescopic mechanism 2 is retracted, and the protective cover 3 moves along the axis of the polishing head away from the polishing head under the action of the telescopic mechanism 2, thereby exposing the polishing head, and the polishing head can easily and unrestrictedly perform automatic replacement or infiltration of the polishing pad at the workstation or the infiltration table. The telescopic mechanism 2 arranged on the anti-splash device effectively solves the problem that the fixed anti-splash cover affects the automatic replacement of the polishing tool or the wetting of the polishing pad; it can effectively shield the polishing dust and polishing liquid when the polishing tool is polishing, and it can also leave enough space for the polishing working end when the polishing tool is automatically replaced or the polishing pad is soaked; and the device has good combination, is simple and practical, efficient and safe.

[0041] The foregoing description of the specific exemplary embodiments of the utility model is presented for the purpose of illustration and description. The foregoing description is not intended to be exhaustive, nor is it intended to limit the utility model to the precise form disclosed, and it is obvious that many changes and variations are possible based on the above teachings. The exemplary embodiments are selected and described in order to explain the specific principles of the utility model and its practical application, so that other technical personnel in the field can realize and utilize the various exemplary embodiments of the utility model and its different selected forms and modified forms. The scope of the utility model is intended to be defined by the appended claims and their equivalents.

Claims

1. An anti-splash device for an automatic polishing mechanism for automobile paint, characterized in that: It comprises a fixing mechanism (1), a telescopic mechanism (2) and a protective cover (3); The fixing mechanism (1) is a hollow structure, which can be formed around the periphery of the polishing head of the automatic polishing mechanism for the automobile paint surface and fixedly connected thereto; The protective cover (3) is a hollow structure, comprising a circular tube (31) and a bell mouth (32) connected as one body; The telescopic mechanism (2) comprises a fixed end (21) and a movable end (22), wherein the fixed end (21) is fixed to the outer wall of the fixed mechanism (1); the movable end (22) is fixed to the protective cover (3) and can drive the protective cover (3) to perform telescopic movement along the axial direction of the polishing head of the automatic polishing mechanism for automobile paint surfaces; when the telescopic mechanism (2) is extended, the protective cover (3) can be moved to the polishing head under the push of the movable end (22) and form a surrounding shielding in the circumferential direction of the polishing head; When the telescopic mechanism (2) is retracted, the protective cover (3) can be retracted together with the movable end (22), thereby exposing the polishing head.

2. The anti-splash device for an automatic polishing mechanism for automobile paint surface as claimed in claim 1, characterized in that: The telescopic mechanism (2) is a single-acting air cylinder or an electric cylinder.

3. The anti-splash device for an automatic polishing mechanism for automobile paint surface as claimed in claim 1, characterized in that: A floating joint (4) is provided at the connection between the protective cover (3) and the movable end (22) of the telescopic mechanism.

4. The anti-splash device for an automatic polishing mechanism for automobile paint surface as claimed in claim 1, characterized in that: The telescopic mechanism (2) further comprises a guide shaft (23) and a linear bearing (24) sliding along the guide shaft; one end of the guide shaft (23) is fixed on the outer wall of the fixing mechanism (1); the linear bearing (24) is fixedly arranged on the protective cover (3); the protective cover and the linear bearing slide synchronously along the guide shaft.

5. The anti-splash device for an automatic polishing mechanism for automobile paint surface as claimed in claim 4, characterized in that: The guide shafts (23) and linear bearings (24) are provided in two or four pairs; the two or four pairs of guide shafts and linear bearings are symmetrically distributed along the center line of the polishing head of the automatic polishing mechanism for the automobile paint surface.

6. The anti-splash device for an automatic polishing mechanism for automobile paint surface as claimed in claim 1, characterized in that: The lower edge of the bell mouth (32) of the protective cover is provided with circumferentially distributed soft brushes. When the protective cover (3) is extended along with the telescopic mechanism (2) to form a surrounding shield at the periphery of the polishing head, the bottom surface of the polishing head is between the lower edge of the bell mouth and the lower edge of the soft brushes.

7. The anti-splash device for an automatic polishing mechanism for automobile paint surface as claimed in claim 1, characterized in that: The protective cover also comprises a brush assembly (5), the brush assembly (5) is surrounded on the outside of the bell mouth, and the length of the brush assembly is greater than the side length of the bell mouth.

8. The anti-splash device for an automatic polishing mechanism for automobile paint surface as claimed in claim 7, characterized in that: The brush assembly (5) comprises a base (51) and a brush (52) formed at one end of the base; the base (51) is a soft structure and can be formed around the circumference of the circular tube (31), and the brush (52) can be unfolded along the expansion direction of the bell mouth (32); the brush (52) has a preset thickness, which can ensure that after the brush assembly (5) is unfolded along the side of the bell mouth, the tail end of the brush will not have a brush gap due to the increase in the unfolded circumference; The length of the brush should meet the following conditions: l = (d / cosα) + t; Wherein: l is the length of the brush (52); d is the distance from the connection between the bell mouth and the round tube to the end of the polishing head of the automatic polishing device for automobile paint surface; α is the angle between the side wall of the bell mouth and the axis, and t=1-10 cm.

9. An anti-splashing device for an automatic polishing mechanism for automobile paint surface according to any one of claims 7 or 8, characterized in that: The brush assembly (5) is provided with a fastening tie or Velcro (6), and the brush assembly can be independently disassembled and assembled from the protective cover.

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