Shielding tool for vehicle body coating

Abstract

The utility model relates to the technical field of vehicle coating, in particular to a shielding tool for vehicle body coating. The shielding tool for vehicle body coating comprises a body part and a shielding part, a containing cavity is defined by the body part, the body part is provided with a first end in the first direction, the first end is provided with a first opening, and the first opening communicates with the containing cavity so that a workpiece can penetrate through the containing cavity and enter the containing cavity; the shielding part is arranged at the first end and used for abutting against the vehicle body, the shielding part is arranged on the first opening in a surrounding mode, and the shielding part protrudes out of the peripheral face of the body part. The double-screw bolt and the peripheral area can be shielded, and the influence of pollution of the double-screw bolt and the peripheral area on part assembly is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle painting technology, and more particularly to a masking tool for vehicle body painting. Background Technology

[0002] In the automotive manufacturing industry, the car body requires a large number of projection weld studs to assemble various parts such as trim panels, underbody protection plates, wheel arches, bumpers, and headlights. These projection weld studs are mainly concentrated in areas such as the chassis, front wheel arches, rear wheel arches, engine compartment, passenger compartment, and rear bulkhead.

[0003] In the automotive manufacturing industry, anti-stone chip sealant needs to be sprayed onto the front wheel arches, rear wheel arches, and chassis areas in the painting workshop to prevent stones from hitting the chassis plate during vehicle operation, causing damage to the electrophoretic paint on the chassis sheet metal and leading to rust. When spraying the anti-stone chip sealant, the projection weld studs on the chassis, wheel arches, and other parts need to be masked to prevent them from becoming contaminated with the sealant and thus hindering part assembly. Utility Model Content

[0004] This application provides a masking fixture for vehicle body painting, which can mask studs and surrounding areas to reduce the impact of contamination on part assembly.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] This application provides a masking fixture for vehicle body painting, including a body portion and a masking portion. The body portion defines a receiving cavity. Along a first direction, the body portion has a first end with a first opening. The first opening communicates with the receiving cavity to allow a workpiece to pass through and enter the receiving cavity. The masking portion is disposed at the first end and is used to abut against the vehicle body. The masking portion surrounds the first opening and protrudes from the outer peripheral surface of the body portion.

[0007] The masking fixture for vehicle body painting proposed in this application embodiment is fitted onto the workpiece during the vehicle painting process. The workpiece passes through a first opening and is accommodated in a receiving cavity, with the masking part abutting against the vehicle body. The main body can reduce the amount of anti-stone chip adhesive sprayed on the studs during painting, and the masking part can reduce the amount of anti-stone chip adhesive sprayed on the vehicle body around the studs, thereby reducing the gap difference caused by subsequent part installation.

[0008] Optionally, the body portion is constructed as a cylinder, the receiving cavity is constructed as a cylindrical cavity, and the axis of the body portion and the axis of the receiving cavity are both parallel to the first direction.

[0009] In the above scheme, the body is configured as a cylinder, and the accommodating cavity is configured as a cylindrical cavity matched with the workpiece, and the workpiece is sleeved in the cylindrical cavity, which can reduce the influence of the anti-stone paint on the workpiece while reducing the material usage of the shielding tool itself.

[0010] Optionally, the shielding part is configured as a circular ring structure, an outer diameter of the shielding part is R1, and an outer diameter of the body part is R2, and R1>R2 is met.

[0011] In the above scheme, the outer diameter R1 of the shielding part is greater than the outer diameter R2 of the body part, and protrudes from the outer peripheral surface of the body part to shield the vehicle body part around the workpiece, reduce the influence of the anti-stone paint on the installation environment around the workpiece during painting, and thus ensure the installation precision of the part.

[0012] Optionally, along the radial direction of the body part, the width of the shielding part is d, and along the first direction, the thickness of the shielding part is c, and d>c is met.

[0013] In the above scheme, along the radial direction of the body part, the shielding part can have sufficient width to shield the peripheral area of the workpiece, and provide a good installation environment for the installation of the part; along the first direction, the shielding part has a small thickness to reduce the material usage of the shielding part.

[0014] Optionally, the body part is further provided with an exhaust hole, and the exhaust hole is in communication with the accommodating cavity.

[0015] In the above scheme, the exhaust hole is provided to exhaust the air in the accommodating cavity, thereby facilitating installation, greatly reducing the operation time, and improving the installation efficiency.

[0016] Optionally, along the first direction, the body part has a second end opposite to the first end, and the exhaust hole is arranged at the second end.

[0017] In the above scheme, the exhaust hole is arranged at the second end opposite to the first end, so that the air in the second end is exhausted, and the installation efficiency is improved.

[0018] Optionally, the exhaust hole is configured as a circle, and the radius of the exhaust hole is R3, and 1.5mm≤R3≤3.5mm is met.

[0019] In the above scheme, the hole diameter of the exhaust hole cannot be too small, otherwise the exhaust of the gas in the accommodating cavity will be affected; and the hole diameter of the exhaust hole cannot be too large, otherwise the anti-stone paint will leak into the accommodating cavity from the exhaust hole during vehicle painting, and then pollute the workpiece, thereby affecting the assembly of the part.

[0020] Optionally, along the axis extension direction of the body part, the center of the exhaust hole is not coincided with the axis of the body part.

[0021] In the above scheme, the air exhaust hole arranged obliquely relative to the axis of the body part can quickly exhaust air while reducing the anti-stone impact glue into the containing cavity, thereby reducing the pollution of the anti-stone impact glue to the workpiece.

[0022] Optionally, the body part and the shielding part are integrally formed. The manufacturing process is simple and convenient.

[0023] Optionally, the body part and the shielding part are both silicone rubber parts.

[0024] In the above scheme, the silicone rubber has high temperature resistance characteristics, and will not melt even during the high temperature drying and curing process of the anti-stone impact glue, so that the shielding tool can be disassembled after the anti-stone impact glue is dried and cured at high temperature, thereby reducing the harm of organic volatile gases in the anti-stone impact glue to the worker's body. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 is a schematic view of the shielding tool of the present application;

[0027] Figure 2 is a schematic view of the shielding tool of the present application;

[0028] Figure 3 is a left view of the shielding tool of the present application;

[0029] Figure 4 is a front view of the shielding tool of the present application.

[0030]

Explanation of reference signs

[0031] 1: body part; 10: containing cavity; 11: first end; 12: first opening; 13: second end; 14: air exhaust hole;

[0032] 2: shielding part;

[0033] X: first direction. DETAILED DESCRIPTION

[0034] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification of the present application and claims and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification of the present application and claims or the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0036] In the present application, the phrase "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiments, nor is it necessarily mutually exclusive or alternative embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium; it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0039] In the present application, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0040] At present, the size of the projection welding stud on the car is basically M6*15mm. The number of such projection welding studs on a vehicle is very large, ranging from 100 to 300. There are mainly two ways to shield the projection welding stud during the anti-chip coating process of vehicle painting: the first is to use paper tape to shield the projection welding stud, and the second is to develop a disposable plastic tool to shield it. The operation process of shielding the vehicle during the vehicle painting process is: shielding the projection welding stud before spraying the vehicle with the anti-chip coating → spraying the vehicle with the anti-chip coating → using a pointed pliers to remove the shielding material.

[0041] The disadvantages of using paper tape to shield the stud are: manually tearing the paper tape, which is irregular in shape, manually wrapping the paper tape around the stud, the shielding area around the stud is too large, resulting in no anti-chip coating around the sheet metal near the stud, and the risk of sheet metal being damaged; when tearing the paper tape, the paper tape may come into contact with the stud, which may cause the stud to come into contact with the anti-chip coating, affecting the assembly of the parts; dozens of studs are needed on the bottom of each vehicle and the wheel cover, which requires at least two people to wrap the studs with paper tape and at least two people to remove the paper tape, resulting in long operation time and labor for wrapping and tearing the paper tape; since the paper tape is not resistant to high temperature, in order to avoid the paper tape melting during the high temperature drying process, which may affect the assembly of the parts later, the paper tape needs to be removed before the anti-chip coating is dried and cured. However, since the anti-chip coating is not dry, the anti-chip coating itself has volatile harmful gases such as solvents, which may affect the health of employees.

[0042] In addition, the disadvantages of developing and using disposable plastic tools are: the use of disposable plastic tools is expensive, about 0.1 yuan each, and at least several yuan are spent on each vehicle with dozens of studs that need to be shielded; when manually removing the stud plastic tool, the glue is not dry, and the glue itself has volatile harmful gases such as solvents, which may affect the health of employees; plastic tools cannot be recycled and will generate a large amount of garbage, and if they are contaminated with wet glue, they need to be treated as hazardous waste.

[0043] In view of this, with reference to Figure 1 and Figure 2 , the shielding tool for vehicle body painting provided by the embodiments of the present application includes a body part 1 and a shielding part 2, the body part 1 defines a receiving cavity 10, and along the first direction X, the body part 1 has a first end 11 with a first opening 12 communicating with the receiving cavity 10 to allow the workpiece to pass through and enter the receiving cavity 10; the shielding part 2 is arranged on the first end 11 and is used to abut against the vehicle body, the shielding part 2 surrounds the first opening 12 and protrudes from the outer peripheral surface of the body part 1.

[0044] The shielding tool for vehicle body coating provided by the embodiments of the present application has a body part 1 with a first end 11 having a first opening 12 in communication with a receiving cavity 10 of the body part 1, and a shielding part 2 surrounding the first opening 12 at the first end 11. When the vehicle coating process is performed, the shielding tool is sleeved on the workpiece, the workpiece passes through the first opening 12, is received in the receiving cavity 10, and the shielding part 2 abuts against the vehicle body. The body part 1 can reduce the anti-stone impact adhesive sprayed on the stud during coating, and the shielding part 2 can reduce the anti-stone impact adhesive sprayed on the vehicle body around the stud, thereby reducing the gap step difference generated in the later part installation.

[0045] That is, the shielding part 2 and the body part 1 can reduce the probability that the workpiece and the peripheral area of the workpiece are contaminated by the anti-stone impact adhesive, thereby reducing the gap step difference generated in the later part installation process.

[0046] It should be understood that the receiving cavity 10 can be configured as a cylindrical cavity or a prismatic cavity such as a quadrangular prism, a hexagonal prism, etc., and the shape of the receiving cavity can be determined according to actual conditions.

[0047] Optionally, the body part 1 is configured as a cylinder, and the receiving cavity 10 is configured as a cylindrical cavity. The axis of the body part 1 and the axis of the receiving cavity 10 are both parallel to the first direction X. The body part 1 is configured as a cylinder, and the receiving cavity 10 is configured as a cylindrical cavity suitable for the workpiece. The workpiece is sleeved in the cylindrical cavity, which can reduce the influence of the anti-stone impact adhesive on the workpiece and reduce the material usage of the shielding tool itself.

[0048] Optionally, referring to Figure 3 , the shielding part 2 is configured as a circular ring structure, the outer diameter of the shielding part 2 is R1, and the outer diameter of the body part 1 is R2, and R1>R2 is satisfied.

[0049] The shielding part 2 surrounds the first opening 12, and the outer diameter R1 of the shielding part 2 is greater than the outer diameter R2 of the body part 1 and protrudes from the outer peripheral surface of the body part 1 to shield the vehicle body part around the workpiece, reduce the influence of the anti-stone impact adhesive on the installation environment around the workpiece during coating, and thus ensure the installation precision of the parts.

[0050] Optionally, referring to Figure 3 and Figure 4 , along the radial direction of the body part 1, the width of the shielding part 2 is d, and along the first direction X, the thickness of the shielding part 2 is c, and d>c is satisfied.

[0051] Along the radial direction of the body part 1, the width of the shielding part 2 is greater than the thickness of the shielding part 2, so that the shielding part 2 can have sufficient width to shield the peripheral area of the workpiece and provide a good installation environment for the installation of the parts. Along the first direction X, the shielding part 2 has a small thickness to reduce the material usage of the shielding part 2.

[0052] It should be understood that the thickness of the shielding part 2 in the present application should be as small as possible along the first direction X, as long as the shielding part 2 can be shaped. Along the radial direction of the body part 1, the width of the shielding part 2 can just shield the mounting surface required around the workpiece.

[0053] Optionally, referring to Figure 2 The body part 1 is also provided with an exhaust hole 14 which communicates with the accommodating cavity 10.

[0054] When the shielding tool is installed on the workpiece, air in the accommodating cavity 10 generates resistance to the installation of the shielding tool. The provision of the exhaust hole 14 can exhaust the air in the accommodating cavity 10, thereby facilitating installation, greatly reducing the operation time, and improving the installation efficiency.

[0055] It should be understood that the exhaust hole 14 of the body part 1 can be one or multiple. The shape of the exhaust hole 14 can be a circular hole, a square hole, or any other suitable shape, as long as it can exhaust air.

[0056] Optionally, referring to Figure 2 Along the first direction X, the body part 1 has a second end 13 opposite to the first end 11, and the exhaust hole 14 is arranged at the second end 13.

[0057] When the shielding tool is installed from the first end 11, the air in the accommodating cavity 10 is extruded from the first end 11 to the second end 13, and the exhaust hole 14 is arranged at the second end 13 opposite to the first end 11, which can exhaust the air in the second end 13 and improve the installation efficiency.

[0058] Optionally, referring to Figure 2 The exhaust hole 14 is configured as a circle, and the radius R3 of the exhaust hole 14 satisfies: 1.5mm≤R3≤3.5mm.

[0059] The radius of the exhaust hole 14 can be 1.5mm, 1.6mm, 1.8mm, 2.0mm, 2.5mm, 2.8mm, 3.0mm or 3.5mm, etc.

[0060] It should be understood that the hole diameter of the exhaust hole 14 cannot be too small, otherwise it will affect the exhaust of the gas in the accommodating cavity 10; and the hole diameter of the exhaust hole 14 cannot be too large, otherwise it will cause the anti-stone impact glue to leak into the accommodating cavity 10 from the exhaust hole 14 during vehicle painting, thereby polluting the workpiece and affecting the assembly of the parts.

[0061] Optionally, along the axial extension direction of the body part 1, the center of the exhaust hole 14 does not coincide with the axis of the body part 1. That is, the center line of the exhaust hole 14 forms an angle with the axis of the body part 1, that is, the exhaust hole 14 is an inclined hole relative to the axial direction of the body part 1.

[0062] As in one embodiment, the exhaust hole 14 is a hole formed after the body part 1 is chamfered. The exhaust hole 14 arranged obliquely relative to the axis of the body part 1 can quickly exhaust air while reducing the anti-stone impact glue into the containing cavity 10, thereby reducing the pollution of the anti-stone impact glue to the workpiece.

[0063] Optionally, the body part 1 and the shielding part 2 are integrally formed. The body part 1 and the shielding part 2 are integrally formed, which is simple and convenient in manufacturing process.

[0064] Optionally, the body part 1 and the shielding part 2 are both silicone rubber parts. Silicone rubber has the characteristics of high temperature resistance, flame retardance, good hand feeling, elasticity, and deformation recovery. In particular, the high temperature resistance characteristic does not melt even in the high temperature drying and curing process of the anti-stone impact glue, so that the shielding tool can be disassembled after the anti-stone impact glue is dried and cured at high temperature, thereby reducing the harm of organic volatile gases in the anti-stone impact glue to the worker's body.

[0065] Specifically, in the coating production process, after the vehicle is sprayed with anti-stone impact glue, there are still paint spraying and multiple oven baking processes to dry the glue and paint. Therefore, it is necessary to develop a shielding tool that can withstand high temperature and move the process of disassembling the shielding tool from the vehicle bottom to the last station of the coating workshop, thereby reducing the worker's contact with toxic wet anti-stone impact glue during operation.

[0066] Taking a shielding tool suitable for a bolt M6*15mm on a vehicle as an example. The shielding tool is integrally injection molded with the shielding part 2 and the body part 1 by using silicone rubber, which can withstand a high temperature of 200°C. Moreover, the silicone rubber material is soft and elastic, and can be quickly installed and disassembled.

[0067] The body part 1 is a silicone rubber stud sleeve with an outer diameter of 10mm, an inner diameter of 6mm, and a length of 40mm. The shielding part 2 is a circular ring-shaped silicone shielding part 2 with an outer diameter of 20mm, a thickness of 2mm, and an inner diameter of 3mm, which is arranged around the first opening 12. The shielding part 2 can reserve a part mounting surface around the bolt, reduce the risk of the edge of the bolt being contaminated by the anti-stone impact glue, and further reduce the gap caused by the anti-stone impact glue sprayed on the mounting surface. The exhaust hole 14 is arranged at the second end 13 of the body part 1, and the exhaust hole 14 is a circular hole with a radius of 2.5±0.5mm.

[0068] When installing and disassembling the shielding tool, there is air in the containing cavity 10, which will generate a resistance to the installation of the shielding tool, thereby causing low installation and disassembly efficiency. The exhaust hole 14 arranged at the second end 13 can exhaust air during the installation and disassembly of the tool, thereby greatly reducing the operation time.

[0069] The operator who disassembles the shielding tool does not need to disassemble the shielding tool before the anti-stone adhesive is dried, thereby reducing the operator's contact with volatile harmful gases such as solvents, and reducing the impact on the operator's body.

[0070] In addition, the silicone rubber tool can withstand a high temperature of 200 DEG C and can be repeatedly used more than 50,000 times, thereby basically realizing the concept of one-time purchase and lifelong reuse; the disassembly station of the shielding tool is at the end of the coating process, at which time the anti-stone adhesive on the vehicle has been dried, and the operator only needs to pinch the dry adhesive on the shielding tool, which is very convenient; the silicone rubber shielding tool is used, and installation and disassembly are fast; after the silicone rubber shielding tool is used, the structure of the anti-stone adhesive at the bolt is regular and consistent with the mounting surface of the part, thereby reducing the vehicle quality problems caused by irregular structure and sheet metal stone impact; after the silicone rubber shielding tool is used, the disassembly site of the shielding tool is clean and tidy, and the waste is reduced by more than 95%.

[0071] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, such that processes, methods, articles, or devices that comprise a list of elements do not include only those elements, but also other elements that are not expressly listed, or other elements that are inherent in such processes, methods, articles, or devices. Without more limitations, the element defined by the sentence "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element.

[0072] Each of the embodiments in the specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0073] The above only describes the embodiments of the present application and does not limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

[0074] Although the embodiments of the present application are described in conjunction with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A masking tool for painting a vehicle body, characterized by, The utility model relates to a kind of vehicle body protection device, including: Body part (1), define containing cavity (10), along first direction (X), the body part (1) has first end (11), the first end (11) has first opening (12), the first opening (12) is communicated with the containing cavity (10) to make work piece pass through and enter the containing cavity (10); Shielding part (2) is arranged in the first end (11) and is used to stop vehicle body, the shielding part (2) is surrounded in the first opening (12), the shielding part (2) protrudes from the outer circumferential surface of the body part (1).

2. The masking tool of claim 1, wherein The body part (1) is configured as a cylinder, the containing cavity (10) is configured as a cylindrical cavity, the axis of the body part (1) and the axis of the containing cavity (10) are parallel to the first direction (X).

3. The masking tool of claim 2, wherein, The shielding part (2) is configured as a circular ring structure, the outer diameter of the shielding part (2) is R1, the outer diameter of the body part (1) is R2, and R1>R2 is satisfied.

4. The masking tool of claim 3, wherein Along the radial direction of the body part (1), the width of the shielding part (2) is d, and along the first direction (X), the thickness of the shielding part (2) is c, and d>c is satisfied.

5. The masking tool of claim 2, wherein The body part (1) is further provided with an exhaust hole (14), and the exhaust hole (14) is communicated with the containing cavity (10).

6. The masking tool of claim 5, wherein, Along the first direction (X), the body part (1) has a second end (13) arranged opposite to the first end (11), and the exhaust hole (14) is arranged at the second end (13).

7. The masking tool of claim 5, wherein, The exhaust hole (14) is configured as a circle, and the radius of the exhaust hole (14) is R3, and 1.5mm≤R3≤3.5mm is satisfied.

8. The masking tool of claim 7, wherein, Along the axis extension direction of the body part (1), the center of the exhaust hole (14) does not coincide with the axis of the body part (1).

9. The masking tool of claim 1, wherein, The body part (1) and the shielding part (2) are integrally formed.

10. The masking tool of claim 9, wherein, The body part (1) and the shielding part (2) are both silicone rubber parts.

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